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Sample records for oct-dec q2 jan-mar

  1. J Med Internet Res. 2010 Jan-Mar; 12(1): e6. Published online 2010 March 12. doi: 10.2196/jmir.1149

    E-Print Network [OSTI]

    Kiesler, Sara

    Go to: Go to: J Med Internet Res. 2010 Jan-Mar; 12(1): e6. Published online 2010 March 12. doi: 10.2196/jmir.1149 PMCID: PMC3234167 Effects of Internet Use on Health and Depression: A Longitudinal Study by other articles in PMC. Abstract Background The rapid expansion of the Internet has increased the ease

  2. Measurement of the Q2-evolution of the Bjorken integral at low Q2

    E-Print Network [OSTI]

    A. Deur

    2004-11-30

    We report on the extraction of the Q2-dependence of the Bjorken sum between 0.16 < Q2 < 1.1 GeV2. A twist analysis performed on these data shows that the higher twist corrections are small due to a cancellation between the twist-4 and 6 terms. The extraction of an effective strong coupling constant is discussed.

  3. Insights into $Q^2 \\bar{Q}^2$ states from an effective perspective

    E-Print Network [OSTI]

    Ll. Ametller; P. Talavera

    2015-09-25

    We discuss the two photon coupling of the lightest scalar meson on the basis of an extension of $\\chi$PT. Using low energy data on the pion form-factor and the $\\gamma\\gamma\\to \\pi^+\\pi^-(\\pi^0\\pi^0)$ cross-sections as inputs, we find $\\Gamma(\\sigma\\to\\gamma\\gamma) \\cong 0.126~\\rm{keV} $. The smallness of the result and the relative weight between its components, ${\\Gamma_{\\gamma\\gamma\\to S_1}\\over \\Gamma{ \\gamma\\gamma\\to\\pi\\pi\\to S_1}} < 1$, suggests that the scalar $0^{++}$ meson is mainly a $Q^2\\bar{Q}^2$ state.

  4. Multi Jet Production at High Q2

    E-Print Network [OSTI]

    Thomas Kluge

    2005-10-31

    Deep-inelastic $e^+p$ scattering data, taken with the H1 detector at HERA, are used to investigate jet production over a range of four-momentum transfers $150 < Q^2 < 15000 \\mathrm{GeV}^2$ and transverse jet energies $5 < E_T < 50 \\mathrm{GeV}$. The analysis is based on data corresponding to an integrated luminosity of $\\mathcal{L}_\\mathrm{int} = 65.4 \\mathrm{pb}^{-1}$ taken in the years 1999-2000 at a centre-of-mass energy $\\sqrt{s} \\approx 319 \\mathrm{GeV}$. Jets are defined by the inclusive $k_t$ algorithm in the Breit frame of reference. Dijet and trijet jet cross sections are measured with respect to the exchanged boson virtuality and in addition the ratio of the trijet to the dijet cross section $R_{3/2}$ is investigated. The results are compared to the predictions of perturbative QCD calculations in next-to-leading order in the strong coupling constant $\\alpha_s$. The value of $\\alpha_s(m_Z)$ determined from the study of $R_{3/2}$ is $\\alpha_s(m_Z) = 0.1175 \\pm 0.0017 (\\mathrm{stat.}) \\pm 0.0050 (\\mathrm{syst.}) ^{+0.0054}_{-0.0068} (\\mathrm{theo.})$.

  5. Journal of Database Management Oct-Dec. 1999

    E-Print Network [OSTI]

    Balaban, Mira

    routinesmaybeimplementedasdatabaseprocedures,ifarelationalDBMSisutilized,orasclassmethods,ifanobject- oriented DBMS is utilized. INTRODUCTION, and implemented with some specific DBMS, using its specific DDL (data definition language).Applicationprogramsthatmanipulatethedatabase access the DBMS via its DML (data manipulation language), either directly or through a host programming

  6. Microsoft Word - Draft Option Mod Oct - Dec 2011 rev 1

    National Nuclear Security Administration (NNSA)

    DELIVERIES OR PERFORMANCE, Paragraph F.4; revise Section B, SUPPLIES OR SERVICES AND PRICESCOSTS, paragraph B.2(a)(2); and, revise Section B, SUPPLIES OR SERVICES AND PRICES...

  7. Microsoft Word - Draft Option Mod Oct - Dec 2011 rev 1

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal01 Sandia NationalSecurityNuclearH-canyon

  8. Table of contents www.q2s.ntnu.no 1 Centre for Quantifiable Quality

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Table of contents www.q2s.ntnu.no 1 Q2S Centre for Quantifiable Quality of Service in Communication Systems AnnualReport2008 #12;www.q2s.ntnu.no Table of contents2 The sixth year of Q2S Telefax: +47 73 59 27 90 Email: secretary@q2s.ntnu.no Internet: www.q2s.ntnu.no Table of contents #12;3The

  9. From $sl_q(2)$ to a parabosonic Hopf algebra

    E-Print Network [OSTI]

    Tsujimoto, Satoshi; Zhedanov, Alexei

    2011-01-01

    A Hopf algebra with four generators among which an involution (reflection) operator, is introduced. The defining relations involve commutators and anticommutators. The discrete series representations are developed. Designated by $sl_{-1}(2)$, this algebra encompasses the Lie superalgebra $osp(1|2)$. It is obtained as a $q=-1$ limit of the $sl_q(2)$ algebra and seen to be equivalent to the parabosonic oscillator algebra in irreducible representations. It possesses a noncocommutative coproduct. The Clebsch-Gordan coefficients (CGC) of $sl_{-1}(2)$ are obtained and expressed in terms of the dual -1 Hahn polynomials. A generating function for the CGC is derived using a Bargmann realization.

  10. From $sl_q(2)$ to a Parabosonic Hopf Algebra

    E-Print Network [OSTI]

    Satoshi Tsujimoto; Luc Vinet; Alexei Zhedanov

    2011-10-07

    A Hopf algebra with four generators among which an involution (reflection) operator, is introduced. The defining relations involve commutators and anticommutators. The discrete series representations are developed. Designated by $sl_{-1}(2)$, this algebra encompasses the Lie superalgebra $osp(1|2)$. It is obtained as a $q=-1$ limit of the $sl_q(2)$ algebra and seen to be equivalent to the parabosonic oscillator algebra in irreducible representations. It possesses a noncocommutative coproduct. The Clebsch-Gordan coefficients (CGC) of $sl_{-1}(2)$ are obtained and expressed in terms of the dual -1 Hahn polynomials. A generating function for the CGC is derived using a Bargmann realization.

  11. Neutron charge form factor at large $q^2$

    E-Print Network [OSTI]

    R. Schiavilla; I. Sick

    2001-07-06

    The neutron charge form factor $G_{En}(q)$ is determined from an analysis of the deuteron quadrupole form factor $F_{C2}$ data. Recent calculations, based on a variety of different model interactions and currents, indicate that the contributions associated with the uncertain two-body operators of shorter range are relatively small for $F_{C2}$, even at large momentum transfer $q$. Hence, $G_{En}(q)$ can be extracted from $F_{C2}$ at large $q^2$ without undue systematic uncertainties from theory.

  12. Domestic Coal Distribution 2009 Q2 by Origin State: Alabama

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal4Cubic43,728 243,242Consumers (DollarsQ2 by Origin

  13. Sep Nov Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Jan

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700 GJO-2003-411-TACe: SUBJIHX:ontine atSep Nov

  14. Study of the $f_2(1270)$ and $a_2(1320)$ resonances in $\\gamma^*(Q^2)\\gamma$ collisions

    E-Print Network [OSTI]

    Achasov, N N; Shestakov, G N

    2015-01-01

    We discuss studies of the $Q^2$ dependence of the $f_2(1270)$ and $a_2 (1320)$ production cross sections in $\\gamma^*(Q^2)\\gamma $ collisions at current and coming into operation colliders with a high luminosity. Changing the dominant helicity amplitude occurs in the reactions $\\gamma^*(Q ^2)\\gamma\\to f_2(1270)$ and $\\gamma^*(Q^2) \\gamma\\to a_2(1320)$ with increasing $Q^2$. This is caused by the coming of the QCD asymptotics. It is shown that the transition to the asymptotic behavior of QCD in the amplitudes $\\gamma^*(Q^2) \\gamma\\to f_2(1270),a_2(1320)$ is provided by the compensation of the contributions of ground vector states $\\rho$ and $\\omega$ in $Q^2$-channel with the contributions of their radial excitations.

  15. $g_{1}$ at low x and low $Q^{2}$ with Polarized ep Colliders

    E-Print Network [OSTI]

    Bass, S D; Bass, Steven D.; De Roeck, A

    2001-01-01

    Measurements of g_1 at low x and low Q^2 are expected to provide a sensitive probe of the transition from Regge to perturbative QCD dynamics, offering a new testing ground for models of small x physics. We discuss the potential of polarized ep colliders (Polarized HERA and eRHIC) to investigate this physics --- varying Q^2 between 0.01 and 1 GeV^2 --- and to constrain the high-energy part of the Drell-Hearn-Gerasimov sum-rule for polarized photoproduction.

  16. g_1 at low x and low Q^2 with Polarized ep Colliders

    E-Print Network [OSTI]

    Steven D. Bass; Albert De Roeck

    2000-08-28

    Measurements of g_1 at low x and low Q^2 are expected to provide a sensitive probe of the transition from Regge to perturbative QCD dynamics, offering a new testing ground for models of small x physics. We discuss the potential of polarized ep colliders (Polarized HERA and eRHIC) to investigate this physics --- varying Q^2 between 0.01 and 1 GeV^2 --- and to constrain the high-energy part of the Drell-Hearn-Gerasimov sum-rule for polarized photoproduction.

  17. Nuclear shadowing in deep inelastic scattering on nuclei at low and medium Q^2

    E-Print Network [OSTI]

    Bugaev, Edgar V

    2015-01-01

    Nuclear shadowing corrections to the structure functions of deep inelastic scattering of intermediate-mass nuclei are calculated at very low values of Bjorken x and small values of Q^2 (Q^2<5 GeV^2). The two-component approach (generalized VMD plus hard pomeron) is used for a description of the underlying virtual photon - nucleon interaction. The hard component of the nucleon structure function is calculated in a framework of the colour dipole model with dipole cross section having Regge-type energy dependence. Numerical results for nuclear shadowing corrections are compared with available data of E665 and NMC collaborations.

  18. Jefferson Lab's results on the Q^2-evolution of moments of spin structure functions

    E-Print Network [OSTI]

    A. Deur

    2005-07-15

    We present the recent JLab measurements on moments of spin structure functions at intermediate and low Q^2. The Bjorken sum and Burkhardt-Cottingham sum on the neutron are presented. The later appears to hold. Higher moments (generalized spin polarizabilities and d_2^n) are shown and compared to chiral perturbation theory and lattice QCD respectively.

  19. Microsoft Word - S06430_JanMar.doc

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbinsMonumentThird6010 Task OrderAnnual Assessment0Photos

  20. SPEAR3 Jan-Mar 03 Qtrly Rpt.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni > The2/01/12 Page 1 ofSuper1 THIS PAGEthroughJuly3 2

  1. Microsoft Word - DOE_RM_DM-#100066-v1-Sitewide_Quarterly_Oct-Dec_2004.DOC

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V.How DisposalInterim

  2. Microsoft Word - DOE_RM_DM-#100069-v1-NAPL_Quarterly_Oct-Dec_2004.DOC

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V.How DisposalInterim1 U.S.

  3. Microsoft Word - DOE_RM_DM-#345139-v1-NAPL_Quarterly_Oct-Dec_2005.DOC

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V.How DisposalInterim1661 20055

  4. Microsoft Word - DOE_RM_DM-#345149-v1-Sitewide_Oct_Dec_2005.DOC

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V.How

  5. Microsoft Word - S09615_oct_dec2012 Quarterly Report.doc

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbinsMonumentThird6010Office ofListings andFirst2Enhanced

  6. Measurement of the generalized form factors near threshold via ?*p ? n?+ at high Q2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Park, K.; Adhikari, K. P.; Adikaram, D.; Anghinolfi, M.; Baghdasaryan, H.; Ball, J.; Battaglieri, M.; Batourine, V.; Bedlinskiy, I.; Bennett, R. P.; et al

    2012-03-26

    We report the first extraction of the pion-nucleon multipoles near the production threshold for the n?+ channel at relatively high momentum transfer (Q2 up to 4.2 GeV2). The dominance of the s-wave transverse multipole (E0+), expected in this region, allowed us to access the generalized form factor G1 within the light-cone sum rule (LCSR) framework as well as the axial form factor GA. The data analyzed in this work were collected by the nearly 4? CEBAF Large Acceptance Spectrometer (CLAS) using a 5.754-GeV electron beam on a proton target. The differential cross section and the ?-N multipole E0+/GD were measuredmore »using two different methods, the LCSR and a direct multipole fit. The results from the two methods are found to be consistent and almost Q2 independent.« less

  7. Measurement of the generalized form factors near threshold via $?^* p \\to n?^+$ at high $Q^2$

    E-Print Network [OSTI]

    Kijun Park; Ralf Gothe; Krishna Adhikari; Dasuni Adikaram-Mudiyanselage; Marco Anghinolfi; Hovhannes Baghdasaryan; Jacques Ball; Marco Battaglieri; Vitaly Baturin; Ivan Bedlinskiy; Robert Bennett; Angela Biselli; Craig Bookwalter; Sergey Boyarinov; Derek Branford; William Briscoe; William Brooks; Volker Burkert; Daniel Carman; Andrea Celentano; Shloka Chandavar; Gabriel Charles; Philip Cole; Marco Contalbrigo; Volker Crede; Annalisa D'Angelo; Aji Daniel; Natalya Dashyan; Raffaella De Vita; Enzo De Sanctis; Alexandre Deur; Chaden Djalali; David Doughty; Raphael Dupre; Ahmed El Alaoui; Lamiaa Elfassi; Paul Eugenio; Gleb Fedotov; Ahmed Fradi; Marianna Gabrielyan; Nerses Gevorgyan; Gerard Gilfoyle; Kevin Giovanetti; Francois-Xavier Girod; John Goetz; Wesley Gohn; Evgeny Golovach; Lewis Graham; Keith Griffioen; Michel Guidal; Lei Guo; Kawtar Hafidi; Hayk Hakobyan; Charles Hanretty; David Heddle; Kenneth Hicks; Maurik Holtrop; Yordanka Ilieva; David Ireland; Boris Ishkhanov; Evgeny Isupov; David Jenkins; Hyon-Suk Jo; Kyungseon Joo; Mahbubul Khandaker; Puneet Khetarpal; Andrey Kim; Wooyoung Kim; Andreas Klein; Franz Klein; A. Kubarovsky; Valery Kubarovsky; Sebastian Kuhn; Sergey Kuleshov; Nicholas Kvaltine; Kenneth Livingston; Haiyun Lu; Ian MacGregor; Nikolai Markov; Michael Mayer; Bryan McKinnon; Mac Mestayer; Curtis Meyer; Taisiya Mineeva; Marco Mirazita; Viktor Mokeev; Herve Moutarde; Edwin Munevar Espitia; Pawel Nadel-Turonski; Rakhsha Nasseripour; Silvia Niccolai; Gabriel Niculescu; Maria-Ioana Niculescu; Mikhail Osipenko; Alexander Ostrovidov; Michael Paolone; Luciano Pappalardo; Rafayel Paremuzyan; Seungkyung Park; Sergio Pereira; Evan Phelps; Silvia Pisano; Oleg Pogorelko; Sergey Pozdnyakov; John Price; Sebastien Procureur; Yelena Prok; Giovanni Ricco; Dipak Rimal; Marco Ripani; Barry Ritchie; Guenther Rosner; Patrizia Rossi; Franck Sabatie; Mukesh Saini; Carlos Salgado; Diane Schott; Reinhard Schumacher; Heghine Seraydaryan; Youri Sharabian; Elton Smith; Gregory Smith; Daniel Sober; Daria Sokhan; Samuel Stepanyan; Stepan Stepanyan; Paul Stoler; Igor Strakovski; Steffen Strauch; Mauro Taiuti; Wei Tang; Charles Taylor; Ye Tian; Svyatoslav Tkachenko; Arjun Trivedi; Maurizio Ungaro; Brian Vernarsky; Alexander Vlasov; Eric Voutier; Daniel Watts; Dennis Weygand; Michael Wood; Nicholas Zachariou; Bo Zhao; Zhiwen Zhao; N. Kalantarians; C. E. Hyde

    2012-02-21

    We report the first extraction of the pion-nucleon multipoles near the production threshold for the $n\\pi^+$ channel at relatively high momentum transfer ($Q^2$ up to 4.2 $\\rm{GeV^2}$). The dominance of the s-wave transverse multipole ($E_{0+}$), expected in this region, allowed us to access the generalized form factor $G_1$ within the light-cone sum rule (LCSR) framework as well as the axial form factor $G_A$. The data analyzed in this work were collected by the nearly $4\\pi$ CEBAF Large Acceptance Spectrometer (CLAS) using a 5.754 $\\rm{GeV}$ electron beam on a proton target. The differential cross section and the $\\pi-N$-multipole $E_{0+}/G_D$ were measured using two different methods, the LCSR and a direct multipole fit. The results from the two methods are found to be consistent and almost $Q^2$ independent.

  8. Moments of the neutron $g_2$ structure function at intermediate $Q^2$

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Solvignon-Slifer, Patricia H.; et. al.,

    2015-07-01

    We present new experimental results of the $^3$He spin structure function $g_2$ in the resonance region at $Q^2$ values between 1.2 and 3.0 (GeV/c)$^2$. Spin dependent moments of the neutron were then extracted. The resonance contribution to the neutron $d_2$ matrix element was found to be small at $\\ $=2.4 (GeV/c)$^2$ and in agreement with the Lattice QCD calculation. The Burkhardt-Cottingham sum rule for neutron was tested with the measured data and using the Wandzura-Wilczek relation for the low $x$ unmeasured region. A small deviation was observed at $Q^2$ values between 0.5 and 1.2 (GeV/c)$^2$ for themore »neutron.« less

  9. $Q^2$ Dependence of Quadrupole Strength in the $?^*p\\to?^+(1232)\\to p ?^0$ Transition

    E-Print Network [OSTI]

    CLAS Collaboration; K. Joo; L. C. Smith

    2002-02-11

    Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the $Q^2$ dependence of the magnetic ($M_{1+}$), electric ($E_{1+}$), and scalar ($S_{1+}$) multipoles in the $\\gamma^* p \\to \\Delta^+ \\to p \\pi^0$ transition. We report new experimental values for the ratios $E_{1+}/M_{1+}$ and $S_{1+}/M_{1+}$ over the range $Q^2$= 0.4-1.8 GeV$^2$, extracted from precision $p(e,e 'p)\\pi^{\\circ}$ data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.

  10. Moments of the neutron $g_2$ structure function at intermediate $Q^2$

    E-Print Network [OSTI]

    P. Solvignon; N. Liyanage; J. -P. Chen; Seonho Choi; K. Slifer; K. Aniol; T. Averett; W. Boeglin; A. Camsonne; G. D. Cates; C. C. Chang; E. Chudakov; B. Craver; F. Cusanno; A. Deur; D. Dutta; R. Ent; R. Feuerbach; S. Frullani; H. Gao; F. Garibaldi; R. Gilman; C. Glashausser; V. Gorbenko; O. Hansen; D. W. Higinbotham; H. Ibrahim; X. Jiang; M. Jones; A. Kelleher; J. Kelly; C. Keppel; W. Kim; W. Korsch; K. Kramer; G. Kumbartzki; J. J. LeRose; R. Lindgren; B. Ma; D. J. Margazioti; P. Markowitz; K. McCormick; Z. -E. Meziani; R. Michaels; B. Moffit; P. Monaghan; C. Munoz Camacho; K. Paschke; B. Reitz; A. Saha; R. Shneor; J. Singh; V. Sulkosky; A. Tobias; G. M. Urciuoli; K. Wang; K. Wijesooriya; B. Wojtsekhowski; S. Woo; J. -C. Yang; X. Zheng; L. Zhu

    2015-06-29

    We present new experimental results of the $^3$He spin structure function $g_2$ in the resonance region at $Q^2$ values between 1.2 and 3.0 (GeV/c)$^2$. Spin dependent moments of the neutron were then extracted. Our main result, the resonance contribution to the neutron $d_2$ matrix element, was found to be small at $$=2.4 (GeV/c)$^2$ and in agreement with the Lattice QCD calculation. The Burkhardt-Cottingham sum rule for $^3$He and the neutron was tested with the measured data and using the Wandzura-Wilczek relation for the low $x$ unmeasured region. A small deviation was observed at $Q^2$ values between 0.5 and 1.2 (GeV/c)$^2$ for the neutron.

  11. Jet production in high Q 2 deepinelastic ep scattering at HERA

    E-Print Network [OSTI]

    Jet production in high Q 2 deep­inelastic ep scattering at HERA ZEUS Collaboration Abstract Two­jet:01 ! x ! 0:1 and 0:04 ! y ! 0:95 with the ZEUS detector at HERA. The kinematic properties of the jets and the jet production rates are presented. The partonic scaling variables of the two­jet system and the rate

  12. Low-$Q^2$ partons in p-p and Au-Au collisions

    E-Print Network [OSTI]

    Thomas A. Trainor

    2005-10-11

    We describe correlations of low-$Q^2$ parton fragments on transverse rapidity $y_t$ and angles $(\\eta,\\phi)$ from p-p and Au-Au collisions at $\\sqrt{s} =$ 130 and 200 GeV. Evolution of correlations on $y_t$ from p-p to more-central Au-Au collisions shows evidence for parton dissipation. Cuts on $y_t$ isolate angular correlations on $(\\eta,\\phi)$ for low-$Q^2$ partons which reveal a large asymmetry about the jet thrust axis in p-p collisions favoring the azimuth direction. Evolution of angular correlations with increasing Au-Au centrality reveals a rotation of the asymmetry to favor pseudorapidity. Angular correlations of transverse momentum $p_t$ in Au-Au collisions access temperature/velocity structure resulting from low-$Q^2$ parton scattering. $p_t$ autocorrelations on $(\\eta,\\phi)$, obtained from the scale dependence of $$ fluctuations, reveal a complex parton dissipation process in heavy ion collisions which includes the possibility of collective bulk-medium recoil in response to parton stopping.

  13. A concept for the experimental determination of the nucleon electric to magnetic form factor ratio at very low $Q^2$

    E-Print Network [OSTI]

    G. Ron; E. Piasetzky; B. Wojtsekhowski

    2009-04-29

    Stationary target measurements of the nucleon form factors have been performed with high precision down to $Q^2$ of $\\sim$ 0.01 GeV$^2$ for protons ($G_E^p$) and down to $\\sim$ 0.1 GeV$^2$ for neutrons ($G_M^n$). Conventional extraction using cross section and polarization measurement cannot be extended to very low values of $Q^2$ due to inherent experimental limitations. We present a proposal for a new approach to a measurement, using colliding beams, which will extend the range of possible measurement at low $Q^2$ by several orders of magnitude over stationary target limits.

  14. Low-Cost, Lightweight Solar Concentrators FY13 Q2 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S.Leadership onProtonConcentrators FY13 Q2 Low-Cost,

  15. High Precision Measurement of the Proton Elastic Form Factor Ratio at Low Q2

    SciTech Connect (OSTI)

    Xiaohui Zhan

    2010-01-31

    Experiment E08-007 measured the proton elastic form factor ratio ?pGE/GM in the range of Q2 = 0.3?0.7(GeV/c)2 by recoil polarimetry. Data were taken in 2008 at the Thomas Jefferson National Accelerator Facility in Virginia, USA. A 1.2 GeV polarized electron beam was scattered off a cryogenic hydrogen target. The recoil proton was detected in the left HRS in coincidence with the elasticly scattered electrons tagged by the BigBite spectrometer. The proton polarization was measured by the focal plane polarimeter (FPP). In this low Q2 region, previous measurement from Jefferson Lab Hall A (LEDEX) along with various fits and calculations indicate substantial deviations of the ratio from unity. For this new measurement, the proposed statistical uncertainty (< 1%) was achieved. These new results are a few percent lower than expected from previous world data and fits, which indicate a smaller GEp at this region. Beyond the intrinsic interest in nucleon structure, the new results also have implications in determining the proton Zemach radius and the strangeness form factors from parity violation experiments.

  16. Neutral Pion Electroproduction in the Resonance Region at High $Q^2$

    SciTech Connect (OSTI)

    Villano, A N; Bosted, P E; Connell, S H; Dalton, M M; Jones, M K; Adams, G S; Afanasev, A; Ahmidouch, A; Angelescu, T; Arrington, J; Asaturyan, R; Baker, O K; Benmouna, N; Berman, B L; Breuer, H; Christy, M E; Cui, Y; Danagoulian, S; Day, D; Dodario, T; Dunne, J A; Dutta, D; El Khayari, N; Elliot, B; Ent, R; Fenker, H C; Frolov, V V; Gan, L; Gaskell, D; Gasparian, A; Grullon, S; Hafidi, K; Hinton, W; Holt, R J; Huber, G M; Hungerford, E; Joo, K; Kalantarians, N; Keppel, C E; Kinney, E R; Kubarovsky, V; Li, Y; Liang, Y; Lu, M; Lung, A; Mack, D; Malace, S; Markowitz, P; McKee, P; Meekins, D G; Mkrtchhyan, H; Napolitano, J; Niculescu, G; Niculescu, I; Opper, A K; Pamela, P; Potterveld, D H; Reimer, Paul E; Reinhold, J; Roche, J; Rock, S E; Schulte, E; Segbefia, E; Smith, C

    2009-09-01

    The process $ep \\to e^{\\prime}p^{\\prime}\\pi^0$ has been measured at $Q^2$ = 6.4 and 7.7 \\ufourmomts in Jefferson Lab's Hall C. Unpolarized differential cross sections are reported in the virtual photon-proton center of mass frame considering the process $\\gamma^{\\ast}p \\to p^{\\prime}\\pi^0$. Various details relating to the background subtractions, radiative corrections and systematic errors are discussed. The usefulness of the data with regard to the measurement of the electromagnetic properties of the well known $\\Delta(1232)$ resonance is covered in detail. Specifically considered are the electromagnetic and scalar-magnetic ratios $R_{EM}$ and $R_{SM}$ along with the magnetic transition form factor $G_M^{\\ast}$. It is found that the rapid fall off of the $\\Delta(1232)$ contribution continues into this region of momentum transfer and that other resonances

  17. FORMATION CONDITIONS OF ICY MATERIALS IN COMET C/2004 Q2 (MACHHOLZ). I. MIXING RATIOS OF ORGANIC VOLATILES

    SciTech Connect (OSTI)

    Kobayashi, Hitomi; Kawakita, Hideyo, E-mail: h_kobayashi@cc.kyoto-su.ac.j [Department of Physics, Faculty of Science, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555 (Japan)

    2009-09-20

    We observed comet C/2004 Q2 (Machholz) with the Keck II telescope in late 2005 January and we obtained the spectra of C/2004 Q2 including many emission lines of volatile species such as H{sub 2}O, HCN, C{sub 2}H{sub 2}, NH{sub 3}, CH{sub 4}, C{sub 2}H{sub 6}, CH{sub 3}OH, and H{sub 2}CO with high-signal-to-noise ratios. Based on our observations, we determined the mixing ratios of the molecules relative to H{sub 2}O in C/2004 Q2. Since C/2004 Q2 is one of Oort Cloud comets, it is interesting to compare our results with other Oort Cloud comets. The mixing ratios of C{sub 2}H{sub 2}/H{sub 2}O and C{sub 2}H{sub 6}/H{sub 2}O in C/2004 Q2 are lower than typical Oort Cloud comets. Especially, C{sub 2}H{sub 2}/H{sub 2}O ratio in C/2004 Q2 is as lower as Jupiter Family comets. However, mixing ratios of other molecules in C/2004 Q2 are similar to typical Oort Cloud comets. C/2004 Q2 might be the intermediate type between Oort Cloud and Jupiter Family comets. To investigate the formation conditions of such intermediate type comet, we focused on the (C{sub 2}H{sub 2}+C{sub 2}H{sub 6})/H{sub 2}O ratios and C{sub 2}H{sub 6}/(C{sub 2}H{sub 6}+C{sub 2}H{sub 2}) ratios in comets from the viewpoint of conversion from C{sub 2}H{sub 2} to C{sub 2}H{sub 6} in the precometary ices. We found that (C{sub 2}H{sub 2}+C{sub 2}H{sub 6})/H{sub 2}O ratio in C/2004 Q2 is lower than the ratio in typical Oort Cloud comets while C{sub 2}H{sub 6}/(C{sub 2}H{sub 6}+C{sub 2}H{sub 2}) ratio in C/2004 Q2 is consistent with the ratio of the typical Oort Cloud comets and Jupiter family comets. If we assume that the cometary volatiles such as H{sub 2}O, CH{sub 4}, and C{sub 2}H{sub 2} formed similar environment, the C{sub 2}H{sub 6}/(C{sub 2}H{sub 6}+C{sub 2}H{sub 2}) ratio might not be sensitive in the temperature range where hydrogen-addition reactions occurred and cometesimals formed ({approx}30 K). We employed the dynamical-evolutional model and the chemical-evolutional model to determine the formation region of C/2004 Q2 more precisely. We found that comet C/2004 Q2 might have formed in relatively inner region of the solar nebula than the typical Oort Cloud comet (but slightly further than 5 AU from the proto-Sun).

  18. Measurements of the Generalized Electric and Magnetic Polarizabilities of the Proton at Low Q2 Using the VCS Reaction

    E-Print Network [OSTI]

    P. Bourgeois; Y. Sato; J. Shaw; R. Alarcon; A. M. Bernstein; W. Bertozzi; T. Botto; J. Calarco; F. Casagrande; M. O. Distler; K. Dow; M. Farkondeh; S. Georgakopoulos; S. Gilad; R. Hicks; M. Holtrop; A. Hotta; X. Jiang; A. Karabarbounis; J. Kirkpatrick; S. Kowalski; R. Milner; R. Miskimen; I. Nakagawa; C. N. Papanicolas; A. J. Sarty; S. Sirca; E. Six; N. F. Sparveris; S. Stave; E. Stiliaris; T. Tamae; G. Tsentalovich; C. Tschalaer; W. Turchinetz; Z. -L. Zhou; T. Zwart

    2006-05-10

    The mean square polarizability radii of the proton have been measured for the first time in a virtual Compton scattering experiment performed at the MIT-Bates out-of-plane scattering facility. Response functions and polarizabilities obtained from a dispersion analysis of the data at Q2=0.06 GeV2/c2 are in agreement with O(p3) heavy baryon chiral perturbation theory. The data support the dominance of mesonic effects in the polarizabilities, and the increase of beta with increasing Q2 is evidence for the cancellation of long-range diamagnetism by short-range paramagnetism from the pion cloud.

  19. Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to Q^2 = 8.5 GeV^2

    E-Print Network [OSTI]

    A. J. R. Puckett; E. J. Brash; M. K. Jones; W. Luo; M. Meziane; L. Pentchev; C. F. Perdrisat; V. Punjabi; F. R. Wesselmann; A. Ahmidouch; I. Albayrak; K. A. Aniol; J. Arrington; A. Asaturyan; H. Baghdasaryan; F. Benmokhtar; W. Bertozzi; L. Bimbot; P. Bosted; W. Boeglin; C. Butuceanu; P. Carter; S. Chernenko; E. Christy; M. Commisso; J. C. Cornejo; S. Covrig; S. Danagoulian; A. Daniel; A. Davidenko; D. Day; S. Dhamija; D. Dutta; R. Ent; S. Frullani; H. Fenker; E. Frlez; F. Garibaldi; D. Gaskell; S. Gilad; R. Gilman; Y. Goncharenko; K. Hafidi; D. Hamilton; D. W. Higinbotham; W. Hinton; T. Horn; B. Hu; J. Huang; G. M. Huber; E. Jensen; C. Keppel; M. Khandaker; P. King; D. Kirillov; M. Kohl; V. Kravtsov; G. Kumbartzki; Y. Li; V. Mamyan; D. J. Margaziotis; A. Marsh; Y. Matulenko; J. Maxwell; G. Mbianda; D. Meekins; Y. Melnik; J. Miller; A. Mkrtchyan; H. Mkrtchyan; B. Moffit; O. Moreno; J. Mulholland; A. Narayan; S. Nedev; Nuruzzaman; E. Piasetzky; W. Pierce; N. M. Piskunov; Y. Prok; R. D. Ransome; D. S. Razin; P. Reimer; J. Reinhold; O. Rondon; M. Shabestari; A. Shahinyan; K. Shestermanov; S. Sirca; I. Sitnik; L. Smykov; G. Smith; L. Solovyev; P. Solvignon; R. Subedi; E. Tomasi-Gustafsson; A. Vasiliev; M. Veilleux; B. B. Wojtsekhowski; S. Wood; Z. Ye; Y. Zanevsky; X. Zhang; Y. Zhang; X. Zheng; L. Zhu

    2010-05-28

    Among the most fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing the strong interaction dynamics of the nucleon's quark constituents; indeed, recent proton data have attracted intense theoretical interest. In this letter, we report new measurements of the proton electromagnetic form factor ratio using the recoil polarization method, at momentum transfers Q2=5.2, 6.7, and 8.5 GeV2. By extending the range of Q2 for which GEp is accurately determined by more than 50%, these measurements will provide significant constraints on models of nucleon structure in the non-perturbative regime.

  20. Inclusive D*-meson production in ep scattering at low Q2 in the GM-VFN scheme at NLO

    E-Print Network [OSTI]

    G. Kramer; H. Spiesberger

    2009-06-15

    We have calculated the next-to-leading order cross sections for the inclusive production of D*-mesons in ep collisions at HERA for finite, although very small Q2. In this Q2-range, the same approximations as for photoproduction can be used. Our calculation is performed in the general-mass variable-flavour-number scheme. In this approach, large logarithms of the charm transverse momentum are resummed and finite terms depending on m^2/p_T^2 are kept in the hard scattering cross sections. The theoretical results are compared with recent data from the ZEUS collaboration at HERA. On average, we find good agreement.

  1. High Precision Measurement of the Proton Elastic Form Factor Ratio $?_pG_E/G_M$ at low $Q^2$

    E-Print Network [OSTI]

    X. Zhan; K. Allada; D. S. Armstrong; J. Arrington; W. Bertozzi; W. Boeglin; J. -P. Chen; K. Chirapatpimol; S. Choi; E. Chudakov; E. Cisbani; P. Decowski; C. Dutta; S. Frullani; E. Fuchey; F. Garibaldi; S. Gilad; R. Gilman; J. Glister; K. Hafidi; B. Hahn; J. -O. Hansen; D. W. Higinbotham; T. Holmstrom; R. J. Holt; J. Huang; G. M. Huber; F. Itard; C. W. de Jager; X. Jiang; J. Johnson; J. Katich; R. de Leo; J. J. LeRose; R. Lindgren; E. Long; D. J. Margaziotis; S. May-Tal Beck; D. Meekins; R. Michaels; B. Moffit; B. E. Norum; M. Olson; E. Piasetzky; I. Pomerantz; D. Protopopescu; X. Qian; Y. Qiang; A. Rakhman; R. D. Ransome; P. E. Reimer; J. Reinhold; S. Riordan; G. Ron; A. Saha; A. J. Sarty; B. Sawatzky; E. C. Schulte; M. Shabestari; A. Shahinyan; S. Sirca; P. Solvignon; N. F. Sparveris; S. Strauch; R. Subedi; V. Sulkosky; I. Vilardi; Y. Wang; B. Wojtsekhowski; Z. Ye; Y. Zhang

    2011-08-31

    We report a new, high-precision measurement of the proton elastic form factor ratio \\mu_p G_E/G_M for the four-momentum transfer squared Q^2 = 0.3-0.7 (GeV/c)^2. The measurement was performed at Jefferson Lab (JLab) in Hall A using recoil polarimetry. With a total uncertainty of approximately 1%, the new data clearly show that the deviation of the ratio \\mu_p G_E/G_M from unity observed in previous polarization measurements at high Q^2 continues down to the lowest Q^2 value of this measurement. The updated global fit that includes the new results yields an electric (magnetic) form factor roughly 2% smaller (1% larger) than the previous global fit in this Q^2 range. We obtain new extractions of the proton electric and magnetic radii, which are ^(1/2)=0.875+/-0.010 fm and ^(1/2)=0.867+/-0.020 fm. The charge radius is consistent with other recent extractions based on the electron-proton interaction, including the atomic hydrogen Lamb shift measurements, which suggests a missing correction in the comparison of measurements of the proton charge radius using electron probes and the recent extraction from the muonic hydrogen Lamb shift.

  2. Charge fraction measurements for 2.4-35 keV Arq+ (q=2-13) projectiles

    E-Print Network [OSTI]

    Charge fraction measurements for 2.4-35 keV Arq+ (q=2-13) projectiles backscattered from Au(110) with incident energies in the range 2.4-35 keV, that have been 120 degrees backscattered from Au(110) in quasi

  3. The Spin Structure of 3He and the Neutron at Low Q^2: A Measurement of the Generalized GDH Integrand

    SciTech Connect (OSTI)

    Vincent Sulkosky

    2007-08-01

    Since the 1980's, the study of nucleon (proton or neutron) spin structure has been an active field both experimentally and theoretically. One of the primary goals of this work is to test our understanding of Quantum Chromodynamics (QCD), the fundamental theory of the strong interaction. In the high energy region of asymptotically free quarks, QCD has been verified. However, verifiable predictions in the low energy region are harder to obtain due to the complex interactions between the nucleon's constituents: quarks and gluons. In the non-pertubative regime, low-energy effective field theories such as chiral perturbation theory provide predictions for the spin structure functions in the form of sum rules. Spin-dependent sum rules such as the Gerasimov-Drell-Hearn (GDH) sum rule are important tools available to study nucleon spin structure. Originally derived for real photon absorption, the Gerasimov-Drell-Hearn (GDH) sum rule was first extended for virtual photon absorption in 1989. The extension of the sum rule provides a unique relation, valid at any momentum transfer ($Q^{2}$), that can be used to study the nucleon spin structure and make comparisons between theoretical predictions and experimental data. Experiment E97-110 was performed at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) to examine the spin structure of the neutron and $^{3}$He. The Jefferson Lab longitudinally-polarized electron beam with incident energies between 1.1 and 4.4 GeV was scattered from a longitudinally or transversely polarized $^{3}$He gas target in the Hall A end station. Asymmetries and polarized cross-section differences were measured in the quasielastic and resonance regions to extract the spin structure functions $g_{1}(x,Q^{2})$ and $g_{2}(x,Q^{2})$ at low momentum transfers (0.02 $< Q^{2} <$ 0.3 GeV$^{2}$). The goal of the experiment was to perform a precise measurement of the $Q^{2}$ dependence of the extended GDH integral and of the moments of the neutron and $^{3}$He spin structure functions at low $Q^{2}$. This $Q^{2}$ range allows us to test predictions of chiral perturbation theory and check the GDH sum rule by extrapolating the integral to the real photon point. This thesis will discuss preliminary results from the E97-110 data analysis.

  4. Microsoft Word - DOE_RM_DM-#345141-v1-4_5_Quarterly_Oct_Dec_2005.DOC

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V.How DisposalInterim1661

  5. QCD predictions for spin dependent photonic structure function $g_1^?(x,Q^2)$ in the low x region of future linear colliders

    E-Print Network [OSTI]

    J. Kwiecinski; B. Ziaja

    2000-11-21

    Spin dependent structure function $g_1^{\\gamma}(x,Q^2)$ of the polarised photon is analysed within the formalism based upon the unintegrated spin dependent parton distributions incorporating the LO Altarelli-Parisi evolution and the double $ln^2(1/x)$ resummation at low values of Bjorken parameter x. We analyse the effects of the double $ln^2(1/x)$ resummation on the behaviour of $g_1^{\\gamma}(x,Q^2)$ in the low x region which may be accessible in future linear $e^+e^-$ and $e\\gamma$ colliders. Sensitivity of the predictions on the possible nonperturbative gluon content of the polarised photons is analysed. Predictions for spin dependent gluon distribution $\\Delta g^{\\gamma} (x,Q^2)$ are also given.

  6. Q^2 Dependence of the S_{11}(1535) Photocoupling and Evidence for a P-wave resonance in eta electroproduction

    SciTech Connect (OSTI)

    Haluk Denizli; James Mueller; Steven Dytman; M.L. Leber; R.D. Levine; J. Miles; Kui Kim; Gary Adams; Moscov Amaryan; Pawel Ambrozewicz; Marco Anghinolfi; Burin Asavapibhop; G. Asryan; Harutyun Avakian; Hovhannes Baghdasaryan; Nathan Baillie; Jacques Ball; Nathan Baltzell; Steve Barrow; V. Batourine; Marco Battaglieri; Kevin Beard; Ivan Bedlinski; Ivan Bedlinskiy; Mehmet Bektasoglu; Matthew Bellis; Nawal Benmouna; Nicola Bianchi; Angela Biselli; Billy Bonner; Sylvain Bouchigny; Sergey Boyarinov; Robert Bradford; Derek Branford; William Briscoe; William Brooks; Stephen Bueltmann; Volker Burkert; Cornel Butuceanu; John Calarco; Sharon Careccia; Daniel Carman; Catalina Cetina; Shifeng Chen; Philip Cole; Alan Coleman; Patrick Collins; Philip Coltharp; Dieter Cords; Pietro Corvisiero; Donald Crabb; Volker Crede; John Cummings; Natalya Dashyan; Raffaella De Vita; Enzo De Sanctis; Pavel Degtiarenko; Lawrence Dennis; Alexandre Deur; Kalvir Dhuga; Richard Dickson; Chaden Djalali; Gail Dodge; Joseph Donnelly; David Doughty; P. Dragovitsch; Michael Dugger; Oleksandr Dzyubak; Hovanes Egiyan; Kim Egiyan; Lamiaa Elfassi; Latifa Elouadrhiri; A. Empl; Paul Eugenio; Laurent Farhi; Renee Fatemi; Gleb Fedotov; Gerald Feldman; Robert Feuerbach; Tony Forest; Valera Frolov; Herbert Funsten; Sally Gaff; Michel Garcon; Gagik Gavalian; Gerard Gilfoyle; Kevin Giovanetti; Pascal Girard; Francois-Xavier Girod; John Goetz; Atilla Gonenc; Ralf Gothe; Keith Griffioen; Michel Guidal; Matthieu Guillo; Nevzat Guler; Lei Guo; Vardan Gyurjyan; Kawtar Hafidi; Hayk Hakobyan; Rafael Hakobyan; John Hardie; David Heddle; F. Hersman; Kenneth Hicks; Ishaq Hleiqawi; Maurik Holtrop; Jingliang Hu; Charles Hyde; Charles Hyde-Wright; Yordanka Ilieva; David Ireland; Boris Ishkhanov; Eugeny Isupov; Mark Ito; David Jenkins; Hyon-Suk Jo; Kyungseon Joo; Henry Juengst; Narbe Kalantarians; J.H. Kelley; James Kellie; Mahbubul Khandaker; K. Kim; Wooyoung Kim; Andreas Klein; Franz Klein; Mike Klusman; Mikhail Kossov; Laird Kramer; V. Kubarovsky; Joachim Kuhn; Sebastian Kuhn; Sergey Kuleshov; Jeff Lachniet; Jean Laget; Jorn Langheinrich; David Lawrence; Kenneth Livingston; Haiyun Lu; K. Lukashin; Marion MacCormick; Joseph Manak; Nikolai Markov; Simeon McAleer; Bryan McKinnon; John McNabb; Bernhard Mecking; Mac Mestayer; Curtis Meyer; Tsutomu Mibe; Konstantin Mikhaylov; Ralph Minehart; Marco Mirazita; Rory Miskimen; Viktor Mokeev; Kei Moriya; Steven Morrow; M. Moteabbed; Valeria Muccifora; Gordon Mutchler; Pawel Nadel-Turonski; James Napolitano; Rakhsha Nasseripour; Steve Nelson; Silvia Niccolai; Gabriel Niculescu; Maria-Ioana Niculescu; Bogdan Niczyporuk; Megh Niroula; Rustam Niyazov; Mina Nozar; Grant O'Rielly; Mikhail Osipenko; Alexander Ostrovidov; Kijun Park; Evgueni Pasyuk; Craig Paterson; Gerald Peterson; Sasha Philips; Joshua Pierce; Nikolay Pivnyuk; Dinko Pocanic; Oleg Pogorelko; Ermanno Polli; S. Pozdniakov; Barry Preedom; John Price; Yelena Prok; Dan Protopopescu; Liming Qin; Brian Raue; Gregory Riccardi; Giovanni Ricco; Marco Ripani; Barry Ritchie; Federico Ronchetti; Guenther Rosner; Patrizia Rossi; David Rowntree; Philip Rubin; Franck Sabatie; Konstantin Sabourov; Julian Salamanca; Carlos Salgado; Joseph Santoro; Vladimir Sapunenko; Reinhard Schumacher; Vladimir Serov; Aziz Shafi; Youri Sharabian; Jeremiah Shaw; Nikolay Shvedunov; Sebastio Simionatto; Alexander Skabelin; Elton Smith; Lee Smith; Daniel Sober; Daria Sokhan; M. Spraker; Aleksey Stavinskiy; Samuel Stepanyan; Stepan Stepanyan; Burnham Stokes; Paul Stoler; I.I. Strakovsky; Steffen Strauch; Mauro Taiuti; Simon Taylor; David Tedeschi; Ulrike Thoma; R. Thompson; Avtandil Tkabladze; Svyatoslav Tkachenko; Clarisse Tur; Maurizio Ungaro; Michael Vineyard; Alexander Vlassov; Kebin Wang; Daniel Watts; Lawrence Weinstein; Henry Weller; Dennis Weygand; M. Williams; Elliott Wolin; Michael Wood; Amrit Yegneswaran; Junho Yun; Lorenzo Zana; Jixie Zhang; Bo Zhao; Zhiwen Zhao

    2007-07-01

    New cross sections for the reaction $ep \\to e'\\eta p$ are reported for total center of mass energy $W$=1.5--2.3 GeV and invariant squared momentum transfer $Q^2$=0.13--3.3 GeV$^2$. This large kinematic range allows extraction of new information about response functions, photocouplings, and $\\eta N$ coupling strengths of baryon resonances. A sharp structure is seen at $W\\sim$ 1.7 GeV. The shape of the differential cross section is indicative of the presence of a $P$-wave resonance that persists to high $Q^2$. Improved values are derived for the photon coupling amplitude for the $S_{11}$(1535) resonance. The new data greatly expands the $Q^2$ range covered and an interpretation of all data with a consistent parameterization is provided.

  7. Copyright 1996-1998, 2000, 2004-2011 ARM Limited. All rights reserved. ARM DDI 0406B_errata_2011_Q2 (ID053111)

    E-Print Network [OSTI]

    Whaley, R. Clint

    Copyright © 1996-1998, 2000, 2004-2011 ARM Limited. All rights reserved. ARM DDI 0406B_errata_2011_Q2 (ID053111) ARM ® Architecture Reference Manual ARM® v7-A and ARM® v7-R edition Errata markup #12;ii Copyright © 1996-1998, 2000, 2004-2011 ARM Limited. All rights reserved. ARM DDI 0406B_errata_2011

  8. Report to Congress on abnormal occurrences. Quarterly report Jan-Mar 81

    SciTech Connect (OSTI)

    Not Available

    1981-07-01

    Section 208 of the Energy Reorganization Act of 1974 identified an abnormal occurrence as an unscheduled incident or event which the Nuclear Regulatory Commission determined to be significant from the standpoint of public health or safety and requires a quarterly report of such events to be made to Congress. This report covers the period January 1 to March 31, 1981. There was one abnormal occurrence at the nuclear power plants licensed to operate; the event involved an inadvertent disconnection of station batteries. There were no abnormal occurrences at the fuel cycle facilities (other than nuclear power plants). There was one abnormal occurrence at other licensee facilities; the event involved occupational overexposures. There were no abnormal occurrences reported by the Agreement States. This report also contains information updating some previously reported abnormal occurrences.

  9. Final analysis of proton form factor ratio data at Q2 = 4.0, 4.8, and 5.6 GeV2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Puckett, A. J. R.; Brash, E. J.; Gayou, O.; Jones, M. K.; Pentchev, L.; Perdrisat, C. F.; Punjabi, V.; Aniol, K. A.; Averett, T.; Benmokhtar, F.; et al

    2012-04-11

    Recently published measurements of the proton electromagnetic form factor ratio R = ?p GEp/GMp at momentum transfers Q2 up to 8.5 GeV2 in Jefferson Lab Hall C deviate from the linear trend of previous measurements in Jefferson Lab Hall A, favoring a slower rate of decrease of R with Q2. While statistically compatible in the region of overlap with Hall A, the Hall C data hint at a systematic difference between the two experiments. This possibility was investigated in a reanalysis of the Hall A data. We find that the original analysis underestimated the background in the selection of elasticmore »events. The application of an additional cut to further suppress the background increases the results for R, improving the consistency between Halls A and C.« less

  10. Exclusive single pion electroproduction off the proton in the high-lying resonances at Q2 < 5 GeV2 from CLAS

    SciTech Connect (OSTI)

    Park, Kijun

    2014-09-01

    The differential cross sections and structure functions for the exclusive electroproduction process ep --> e'n pi+ were measured in the range of the invariantmass for the np+ system 1.6 GeV lte W lte 2.0 GeV, and the photon virtuality 1.8 GeV2 lte Q2 lte 4.0 GeV2 using CLAS at Jefferson Lab. For the first time, these kinematics are probed in the exclusive p+ production from the protons with nearly full coverage in the azimuthal and polar angles of the np+ center-of-mass system. In this analysis, approximately 39,000 differential cross-section data points in terms of W, Q2, cosq theta* _ pi, and phi?_p-, were obtained. The preliminary differential cross section and structure function analyses are carried out, which allow us to extract the helicity amplitudes in high-lying resonances.

  11. Mathematics 1052 Exam 2, May 3rd, 2014 Q1 Q2 Q3 Q4 Q5 Q6 Total Bonus

    E-Print Network [OSTI]

    Kaygun, Atabey

    Mathematics 1052 Exam 2, May 3rd, 2014 Q1 Q2 Q3 Q4 Q5 Q6 Total Bonus 15pts 20pts 10pts 15pts 30pts) (9 points) n=1 1 n(n+2) #12;Mathematics 1052 Exam 2, May 3rd, 2014 2. Consider the region bounded above about the line y = 1. Page 2 of 5 #12;Mathematics 1052 Exam 2, May 3rd, 2014 3. (10 points) (a

  12. CI2525 ESTRUCTURAS DISCRETAS I f-m 2014 P 1/35 P 2/35 Q 1/15 Q 2/15 TOTAL/5

    E-Print Network [OSTI]

    Meza, Oscar J.

    CI2525 ESTRUCTURAS DISCRETAS I f-m 2014 Sección 1 P 1/35 P 2/35 Q 1/15 Q 2/15 TOTAL/5 0740951 Fernandez Luis Ely 1110969 Silva Rodriguez Erick Gabriel 34 35 15 15 1111391 Lupo Loyo Pablo Francisco 6 12 Colmenares Salamanca Bruno 35 11 8 10 1210613 Duque Contreras Lalezka Isabel 28 20 5 15 1210627 Salerno

  13. CI2525 ESTRUCTURAS DISCRETAS I oct-ene 2014 P 1/35 P 2/35 Q 1/15 Q 2/15 Tarea TOTAL

    E-Print Network [OSTI]

    Meza, Oscar J.

    CI2525 ESTRUCTURAS DISCRETAS I oct-ene 2014 P 1/35 P 2/35 Q 1/15 Q 2/15 Tarea TOTAL 0740913 Franco Alejandro 10 27 7 15 3,5 3 1110798 Portillo Rodriguez Ysmar Yoleth 10 2 1 1110883 Rodríguez Fernández Luis 1210848 Alexander Lacour Jean Paul 20 24 15 1 3 3 1210967 Fanghella Valero Alfredo José 35 32 15 15 3,5 5

  14. Measurements of the neutron electric to magnetic form factor ratio GEn/GMn via the ^2H(\\vec{e},e'\\vec{n})^1H reaction to Q^2 = 1.45 (GeV/c)^2

    E-Print Network [OSTI]

    Jefferson Laboratory E93-038 Collaboration; :; B. Plaster; A. Yu. Semenov

    2005-11-13

    We report values for the neutron electric to magnetic form factor ratio, GEn/GMn, deduced from measurements of the neutron's recoil polarization in the quasielastic 2H(\\vec{e},e'\\vec{n})1H reaction, at three Q^2 values of 0.45, 1.13, and 1.45 (GeV/c)^2. The data at Q^2 = 1.13 and 1.45 (GeV/c)^2 are the first direct experimental measurements of GEn employing polarization degrees of freedom in the Q^2 > 1 (GeV/c)^2 region and stand as the most precise determinations of GEn for all values of Q^2.

  15. Measurement of high-Q^2 neutral current deep inelastic e^- p scattering cross sections with a longitudinally polarised electron beam at HERA

    E-Print Network [OSTI]

    ZEUS Collaboration

    2009-01-16

    Measurements of the neutral current cross sections for deep inelastic scattering in e^- p collisions at HERA with a longitudinally polarised electron beam are presented. The single-differential cross-sections dsigma/dQ^2, dsigma/dx and dsigma/dy and the double-differential cross sections in Q^2 and x are measured in the kinematic region y 185 GeV^2 for both positively and negatively polarised electron beams and for each polarisation state separately. The measurements are based on an integrated luminosity of 169.9 pb^-1 taken with the ZEUS detector in 2005 and 2006 at a centre-of-mass energy of 318 GeV. The structure functions xF_3 and xF_3^{\\gamma Z} are determined by combining the e^- p results presented in this paper with previously measured e^+ p neutral current data. The asymmetry parameter A^- is used to demonstrate the parity violating effects of electroweak interactions at large spacelike photon virtuality. The measurements agree well with the predictions of the Standard Model.

  16. Precise Determination of the Deuteron Spin Structure at Low to Moderate $Q^2$ with CLAS and Extraction of the Neutron Contribution

    E-Print Network [OSTI]

    N. Guler; R. G. Fersch; S. E. Kuhn; P. Bosted; K. A. Griffioen; C. Keith; R. Minehart; Y. Prok; K. P. Adhikari; D. Adikaram; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; J. Ball; M. Battaglieri; V. Batourine; I. Bedlinskiy; W. J. Briscoe; W. K. Brooks; S. Bultmann; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; L. Colaneri; P. L. Cole; M. Contalbrigo; D. Crabb; V. Crede; A. D Angelo; N. Dashyan; A. Deur; C. Djalali; G. E. Dodge; R. Dupre; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; A. Filippi; J. A. Fleming; T. A. Forest; B. Garillon; M. Garcon; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; E. Golovatch; R. W. Gothe; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; N. Harrison; M. Hattawy; K. Hicks; D. Ho; M. Holtrop; S. M. Hughes; C. E. Hyde; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; H. S. Jo; K. Joo; S. Joosten; D. Keller; M. Khandaker; A. Kim; W. Kim; A. Klein; F. J. Klein; V. Kubarovsky; S. V. Kuleshov; K. Livingston; H. Y. Lu; I. J. D. MacGregor; B. McKinnon; M. Mirazita; V. Mokeev; R. A. Montgomery; A Movsisyan; C. Munoz Camacho; P. Nadel-Turonski; L. A. Net; I. Niculescu; M. Osipenko; A. I. Ostrovidov; K. Park; E. Pasyuk; S. Pisano; O. Pogorelko; J. W. Price; S. Procureur; M. Ripani; A. Rizzo; G. Rosner; P. Rossi; P. Roy; F. Sabatie; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; A. Simonyan; Iu. Skorodumina; D. Sokhan; N. Sparveris; I. I. Strakovsky; S. Strauch; V. Sytnik; Ye Tian; S. Tkachenko; M. Ungaro; E. Voutier; N. K. Walford; X. Wei; L. B. Weinstein; M. H. Wood; N. Zachariou; L. Zana; J. Zhang; Z. W. Zhao; I. Zonta

    2015-06-01

    We present the final results for the deuteron spin structure functions obtained from the full data set collected with Jefferson Lab's CLAS in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2 and 5.8 GeV were scattered from deuteron ($^{15}$ND$_3$) targets, dynamically polarized along the beam direction, and detected with CLAS. From the measured double spin asymmetry, the virtual photon absorption asymmetry $A_1^d$ and the polarized structure function $g_1^d$ were extracted over a wide kinematic range (0.05 GeV$^2 < Q^2 <$ 5 GeV$^2$ and 0.9 GeV $< W <$ 3 GeV). We use an unfolding procedure and a parametrization of the corresponding proton results to extract from these data the polarized structure functions $A_1^n$ and $g_1^n$ of the (bound) neutron, which are so far unknown in the resonance region, $W < 2$ GeV. We compare our final results, including several moments of the deuteron and neutron spin structure functions, with various theoretical models and expectations as well as parametrizations of the world data. The unprecedented precision and dense kinematic coverage of these data can aid in future extractions of polarized parton distributions, tests of perturbative QCD predictions for the quark polarization at large $x$, a better understanding of quark-hadron duality, and more precise values for higher-twist matrix elements in the framework of the Operator Product Expansion.

  17. Measurement of the neutron electric to magnetic form factor ratio at Q2 = 1.58 GeV2 using the reaction 3He(e,e'n)pp

    E-Print Network [OSTI]

    B. S. Schlimme; P. Achenbach; C. A. Ayerbe Gayoso; J. C. Bernauer; R. Böhm; D. Bosnar; Th. Challand; M. O. Distler; L. Doria; F. Fellenberger; H. Fonvieille; M. Gómez Rodríguez; P. Grabmayr; T. Hehl; W. Heil; D. Kiselev; J. Krimmer; M. Makek; H. Merkel; D. G. Middleton; U. Müller; L. Nungesser; B. A. Ott; J. Pochodzalla; M. Potokar; S. Sánchez Majos; M. M. Sargsian; I. Sick; S. Širca; M. Weinriefer; M. Wendel; C. J. Yoon

    2013-08-29

    A measurement of beam helicity asymmetries in the reaction 3He(e,e'n)pp has been performed at the Mainz Microtron in quasielastic kinematics in order to determine the electric to magnetic form factor ratio of the neutron, GEn/GMn, at a four momentum transfer Q2 = 1.58 GeV2. Longitudinally polarized electrons were scattered on a highly polarized 3He gas target. The scattered electrons were detected with a high-resolution magnetic spectrometer, and the ejected neutrons with a dedicated neutron detector composed of scintillator bars. To reduce systematic errors data were taken for four different target polarization orientations allowing the determination of GEn/GMn from a double ratio. We find mu_n GEn/GMn = 0.250 +/- 0.058(stat.) +/- 0.017 (sys.).

  18. FOIA QUARTERLY REPORTS (Q2-2014)

    Broader source: Energy.gov [DOE]

    The DOE’s mission is to advance the national, economic, and energy security of the United States; to promote scientific and technological innovation in support of that mission; and to ensure the...

  19. FOIA Quarterly Reports (Q2 2013)

    Broader source: Energy.gov [DOE]

    The DOE’s mission is to advance the national, economic, and energy security of the United States; to promote scientific and technological innovation in support of that mission; and to ensure the...

  20. Microchannel Receiver Development- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this OSU project, funded by SunShot, for the second quarter of fiscal year 2013.

  1. Q2 External Package.xls

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptionsProteinTotal natural gasPurchase,PyFEHM PyFEHMQ&A:87,

  2. fu-q(2)-99.pdf

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26th Annual ConferenceFall 2001 >News from the ARM7

  3. BiL4i|h@ EW?uLh4@|U@ Q 2 ti||i4Mhi 2ff2 +ULh_L *i hi}L*i _i* }LULG tL||L . T?| t _ii hTi|ihi *L tUh||LcUL? . i H t CDOD

    E-Print Network [OSTI]

    Catenacci, Roberto

    BiL4i|h@ EW?uLh4@|U@ Q 2#12; ti||i4Mhi 2ff2 +ULh_L *i hi}L*i _i* }LULG tL||L . T?| t _ii hTi|ihi *L tUh||LcUL? . i H t CDOD u@hi *hi *hi _@|L _@**i i^@3L? % n + &5 ' c &% n + n 5 ' & c &% n + ' UL? & T@h@4i|hL hi@*i E@ AhL@hi @*Lh _ & Tih U

  4. BiL4i|h@ EW?uLh4@|U@ Q 2 ti||i4Mhi 2fff +ULh_L *i hi}L*i _i* }LULG tL||L SD T?| t _ii hTi|ihi *L tUh||Lc |h@ SD i H t

    E-Print Network [OSTI]

    Catenacci, Roberto

    BiL4i|h@ EW?uLh4@|U@ Q 2 ti||i4Mhi 2fff +ULh_L *i hi}L*i _i* }LULG tL||L SD T?| t _ii hTi|ihi *L tUh||Lc |h@ SD i H t ghyh u@hi *hi *hi _@ U#12; @ AhL@hi ?@ M@ti _i* ?U*iL i ?@ M@ti _i**hi sff E i s!E _Li ' e 2e2 n e#12

  5. BiL4i|h@ EW?uLh4@|U@ Q 2 6iMMh@L 2fff +ULh_L *i hi}L*i _i* }LULG tL||L SD T?| t _ii hTi|ihi *L tUh||Lc |h@ SD i H t

    E-Print Network [OSTI]

    Catenacci, Roberto

    BiL4i|h@ EW?uLh4@|U@ Q 2 6iMMh@L 2fff +ULh_L *i hi}L*i _i* }LULG tL||L SD T?| t _ii hTi|ihi *L tUh||Lc |h@ SD i H t ghyh u@hi *hi *hi _@|L _@**i i^@3L? E|%n2+|5 ' | c %|+n25 ' UL? | T@h@4i|hL hi@*i E@ AhL@hi ? @*Lhi _ | Tih U * tt|i4@ ?L? @ tL*3L

  6. Flexible Assembly Solar Technology- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this BrightSource project, funded by SunShot, for the first quarter of fiscal year 2013.

  7. 10-Megawatt Supercritical Carbon Dioxide Turbine- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this National Renewable Energy Laboratory project, funded by SunShot, for the second quarter of fiscal year 2013.

  8. NBB Enclosed Particle Receiver- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this NREL project, funded by SunShot, for the second quarter of fiscal year 2013.

  9. Shorepower Truck Electrification Project (STEP) - 1Q - 2Q 2013

    SciTech Connect (OSTI)

    2014-02-01

    The Fleet Test and Evaluation Team at the U.S. Department of Energy's National Renewable Energy Laboratory is evaluating and documenting the use of shorepower at 50 planned American Recovery and Reinvestment Act (ARRA)-funded truck stop electrification (TSE) sites across the nation. Trucks participating in the study have idle-reduction equipment installed that was purchased with rebates through the ARRA. A total of 5,000 rebates will be approved. the ARRA. A total of 5,000 rebates will be approved.

  10. The strong coupling constant at low Q^2

    SciTech Connect (OSTI)

    Alexandre Deur

    2005-06-06

    We extract an effective strong coupling constant using low-Q{sup 2} data and sum rules. Its behavior is established over the full Q{sup 2}-range and is compared to calculations based on lattice QCD, Schwinger-Dyson equations and a quark model. Although the connection between all these quantities is not known yet, the results are surprisingly alike. Such a similitude may be related to quark-hadron duality.

  11. High-Performance Nanostructured Coating- FY13 Q2

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document summarizes the progress of this UCSD project, funded by SunShot, for the second quarter of fiscal year 2013.

  12. SU{sub {ital q}}(2) lattice gauge theory

    SciTech Connect (OSTI)

    Bimonte, G.; Stern, A.; Vitale, P.

    1996-07-01

    We reformulate the Hamiltonian approach to lattice gauge theories such that, at the classical level, the gauge group does not act canonically, but instead as a Poisson-Lie group. At the quantum level, the symmetry gets promoted to a quantum group gauge symmetry. The theory depends on two parameters: the deformation parameter {lambda} and the lattice spacing {ital a}. We show that the system of Kogut and Susskind is recovered when {lambda}{r_arrow}0, while QCD is recovered in the continuum limit (for any {lambda}). We, thus, have the possibility of having a two-parameter regularization of QCD. {copyright} {ital 1996 The American Physical Society.}

  13. Domestic Coal Distribution 2009 Q2 by Destination State: Alabama

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal4Cubic43,728 243,242Consumers (Dollars

  14. Lone Star I (Q2) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History ViewInformationWindsCompressedListguided wavesLone Star I (4Q07)

  15. Q2 Q3 Q4 Q4 Q3 Q2 Q1 Q1 Q2 Q3 Q4 Q3 Q2 Q1 Q1 Q2 Q3 Q4 Q4 Q3 Q2 Q1

    E-Print Network [OSTI]

    .00/W Concentrating Solar Power (CSP and CPV) 6 MWac of concentrating solar capacity was installed installations totaled 723 MW in Q1 2013, up 33% over Q1 2012 Cumulative operating PV capacity in the U.S. now, installers, and manufacturers to collect granular data on the U.S. solar market. This data provides

  16. Site Acquisition Description/ Category Contracting Office Solicitation

    Office of Environmental Management (EM)

    25M-50M 10292014 1202015 9152014 3312015 582015 Oct-Dec 2015 PPPO GDP DUF6 https:www.emcbc.doe. govSEBDUF6 EMCBC Unrestricted CPAFFP 490-530M 4282015 4...

  17. NEAMS Quarterly Report for January-March 2014 | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    NEAMS Quarterly Report for January-March 2014 NEAMS Quarterly Report for January-March 2014 NEAMSQuarterlyReportJan-Mar14.pdf More Documents & Publications NEAMS Quarterly...

  18. High-Temperature Falling-Particle Receiver- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Sandia National Laboratories project, funded by SunShot, for the second quarter of fiscal year 2013.

  19. Advanced Low-Cost Receivers for Parabolic Troughs- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Norwich Technologies project, funded by SunShot, for the second quarter of fiscal year 2013.

  20. High-Temperature Thermal Array for Next Generation Solar Thermal Power Production- FY12 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this LANL project, funded by SunShot, for the second quarter of fiscal year 2013.

  1. High Operating Temperature Liquid Metal Heat Transfer Fluids- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this UCLA project, funded by SunShot, for the second quarter of fiscal year 2013.

  2. Next-Generation Solar Collectors for CSP- FY13 Q2

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document summarizes the progress of this 3M project, funded by SunShot, for the second quarter of fiscal year 2013.

  3. Self-Cleaning CSP Optics with EDS- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Boston University project, funded by SunShot, for the second quarter of fiscal year 2013.

  4. Dish/Stirling High-Performance Thermal Storage- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this SNL project, funded by SunShot, for the second quarter of fiscal year 2013.

  5. Measurement of the $x$- and $Q^2$-Dependence of the Asymmetry $A_1$ on the Nucleon

    SciTech Connect (OSTI)

    Kahanawita Dharmawardane; Sebastian Kuhn; Peter Bosted; Yelena Prok

    2006-05-23

    We report results for the virtual photon asymmetry A{sub 1} on the nucleon from new Jefferson Lab measurements. The experiment, which used the CEBAF Large Acceptance Spectrometer and longitudinally polarized proton ({sup 15}NH{sub 3}) and deuteron ({sup 15}ND{sub 3}) targets, collected data with a longitudinally polarized electron beam at energies between 1.6 GeV and 5.7 GeV. In the present paper, we concentrate on our results for A{sub 1}(x,Q{sup 2}) and the related ratio g{sub 1}/F{sub 1}(x,Q{sup 2}) in the resonance and the deep inelastic regions for our lowest and highest beam energies, covering a range in momentum transfer Q{sup 2} from 0.05 to 5.0 GeV{sup 2} and in final-state invariant mass W up to about 3 GeV. Our data show detailed structure in the resonance region, which leads to a strong Q{sup 2}--dependence of A{sub 1}(x,Q{sup 2}) for W below 2 GeV. At higher W, a smooth approach to the scaling limit, established by earlier experiments, can be seen, but A{sub 1}(x,Q{sup 2}) is not strictly Q{sup 2}--independent. We add significantly to the world data set at high x, up to x = 0.6. Our data exceed the SU(6)-symmetric quark model expectation for both the proton and the deuteron while being consistent with a negative d-quark polarization up to our highest x. This data set should improve next-to-leading order (NLO) pQCD fits of the parton polarization distributions.

  6. Inclusive Electron Scattering From Nuclei at x >1 and High Q^2

    SciTech Connect (OSTI)

    John Arrington

    1998-06-02

    CEBAF experiment e89-008 measured inclusive electron scattering from nuclei in a Q{sup 2} range between 0.8 and 7.3 (GeV/c){sup 2} for x{sub Bjorken} approximately greater than 1. The cross sections for scattering from D C, Fe, and Au were measured. The C, Fe, and Au data have been analyzed in terms of F(y) to examine y-scaling of the quasielastic scattering, and to study the momentum distribution of the nucleons in the nucleus. The data have also been analyzed in terms of the structure function vW{sub 2} to examine scaling of the inelastic scattering in x and xi and to study the momentum distribution of the quarks. In the regions where quasielastic scattering dominates the cross section (low Q{sup 2} or large negative values of y), the data are shown to exhibit y-scaling. However, the y-scaling breaks down once the inelastic contributions become large. The data do not exhibit x-scaling, except at the lowest values of x, while the structure function does appear to scale in the Nachtmann variable, xi.

  7. Next-Generation Thermionic Solar Energy Conversion- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Stanford/SLAC project, funded by SunShot, for the second quarter of fiscal year 2013.

  8. Low-Cost Metal Hydride Thermal Energy Storage System- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this SRNL project, funded by SunShot, for the second quarter of fiscal year 2013.

  9. High-Efficiency Thermal Energy Storage System for CSP- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Argonne National Laboratory project, funded by SunShot, for the second quarter of fiscal year 2013.

  10. Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this General Atomics project, funded by SunShot, for the second quarter of fiscal year 2013.

  11. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total...

    U.S. Energy Information Administration (EIA) Indexed Site

    17627215,4881361,5460677,4947015,15289053,5762846,5401692,5104549,16269087,66178091 "Anthracite",138012,121208,146605,405825,116603,127501,125028,369132,124431,140171,115125,379727...

  12. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total...

    U.S. Energy Information Administration (EIA) Indexed Site

    16264924,5089471,5057952,5110136,15257559,6034905,5163897,5598759,16797561,65454926 "Anthracite",131036,126151,127417,384604,159864,161567,103152,424583,147423,145690,148093,441206...

  13. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total...

    U.S. Energy Information Administration (EIA) Indexed Site

    16184747,5164431,5730421,5531484,16426336,5787538,6030423,5550719,17368680,67555716 "Anthracite",133480,129360,149128,411968,137000,135432,156673,429105,125414,140118,135144,400676...

  14. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total...

    U.S. Energy Information Administration (EIA) Indexed Site

    16614387,4935905,5546763,4807458,15290126,5422409,5298727,4998875,15720011,65189594 "Anthracite",141165,124979,139183,405327,124628,132527,133537,390692,119571,134819,115911,370301...

  15. Direct s-CO2 Receiver Development- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this NREL project, funded by SunShot, for the second quarter of fiscal year 2013.

  16. GFNMS Superintendent's Report -Q2FY2015, January ~ March, 2015 Sanctuaries' Expansion Becomes Final

    E-Print Network [OSTI]

    of the most intense and productive upwelling systems in North America, important habitats and subsea features

  17. High-Temperature Solar Selective Coating Development for Power Tower Receivers- FY13 Q2

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document summarizes the progress of this SNL project, funded by SunShot, for the second quarter of fiscal year 2013.

  18. Low-Cost Self-Cleaning Reflector Coatings for CSP Collectors- FY13 Q2

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document summarizes the progress of this ORNL project, funded by SunShot, for the second quarter of fiscal year 2013.

  19. Coulomb distortion in high-Q^2 elastic e-p scattering

    E-Print Network [OSTI]

    John Arrington; Ingo Sick

    2004-06-11

    Recently, there has been a significant amount of activity to try and understand the discrepancy between Rosenbluth and polarization transfer measurements of the proton form factors. It has been suggested that the standard use of plane-wave Born approximation in extracting the form factors is insufficient, and that higher-order terms must also be included. Of the corrections missing in standard prescriptions, Coulomb distortion is the most well understood. In this paper, we examine the effect of Coulomb distortion on the extraction of the proton form factors.

  20. Dish Stirling High Performance Thermal Storage FY15Q2 Quad Chart

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby aLED Street Lighting Host Site: City ofNovelQ3:

  1. The proton and deuteron F2 structure function at low Q2 (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)FeedbackPropertiesfully coupled experiments(Journal Article)

  2. Integrated Solar Thermochemical Reaction System - FY13 Q2 | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIAL TECHNICAL8-02 InspectionCONFERENCEChampionsControl

  3. Dish Stirling High Performance Thermal Storage FY15Q2 Quad Chart (Technical

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalentLaboratory | National(Technical Report) | SciTech

  4. SRS Employee Headcount by County of Residence Q2, FY 15

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni > The2/01/12 Page 1NEWS MEDIA16,3 rd Quarter FY

  5. Professional MBA Program Banking Track

    E-Print Network [OSTI]

    Almor, Amit

    Third Year Spring I (Jan ­ Feb) Spring II (Mar ­ Apr) Spring Intersession Financial Accounting period. #12;Term First Year Second Year Third Year Fall I (Aug ­ Oct) Fall II (Oct ­ Dec) FallProfessional MBA Program Banking Track Spring Entry Course Sequence Term First Year Second Year

  6. Using Body Condition Scores to Manage Range Cows and Rangeland 

    E-Print Network [OSTI]

    Lyons, Robert K.; Machen, Richard V.

    2001-07-19

    , to avoid damage to for- ages and soils, the range resource should be moni- tored closely when it has high stock densities, such as those in the spring herd. 7.5 7 6.5 6 5.5 5 4.5 Aug Oct Dec Feb Apr Jun Body Condition Score Summer-calving Spring...

  7. Fundamental Corrosion Studies in High-Temperature Molten Salt Systems for Next-Generation CSP Systems- FY13 Q2

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document summarizes the progress of this SRNL project, funded by SunShot, for the second quarter of fiscal year 2013.

  8. Quarterly Report for LANL Activities: FY12-Q2 National Risk Assessment Partnership (NRAP): Industrial Carbon Capture Program

    SciTech Connect (OSTI)

    Pawar, Rajesh J. [Los Alamos National Laboratory

    2012-04-17

    This report summarizes progress of LANL activities related to the tasks performed under the LANL FWP FE102-002-FY10, National Risk Assessment Partnership (NRAP): Industrial Carbon Capture Program. This FWP is funded through the American Recovery and Reinvestment Act (ARRA). Overall, the NRAP activities are focused on understanding and evaluating risks associated with large-scale injection and long-term storage of CO{sub 2} in deep geological formations. One of the primary risks during large-scale injection is due to changes in geomechanical stresses to the storage reservoir, to the caprock/seals and to the wellbores. These changes may have the potential to cause CO{sub 2} and brine leakage and geochemical impacts to the groundwater systems. While the importance of these stresses is well recognized, there have been relatively few quantitative studies (laboratory, field or theoretical) of geomechanical processes in sequestration systems. In addition, there are no integrated studies that allow evaluation of risks to groundwater quality in the context of CO{sub 2} injection-induced stresses. The work performed under this project is focused on better understanding these effects. LANL approach will develop laboratory and computational tools to understand the impact of CO{sub 2}-induced mechanical stress by creating a geomechanical test bed using inputs from laboratory experiments, field data, and conceptual approaches. The Geomechanical Test Bed will be used for conducting sensitivity and scenario analyses of the impacts of CO{sub 2} injection. The specific types of questions will relate to fault stimulation and fracture inducing stress on caprock, changes in wellbore leakage due to evolution of stress in the reservoir and caprock, and the potential for induced seismicity. In addition, the Geomechanical Test Bed will be used to investigate the coupling of stress-induced leakage pathways with impacts on groundwater quality. LANL activities are performed under two tasks: (1) develop laboratory and computational tools to understand CO{sub 2}-induced mechanical impacts and (2) use natural analog sites to determine potential groundwater impacts. We are using the Springerville-St. John Dome as a field site for collecting field data on CO{sub 2} migration through faults and groundwater impacts as well as developing and validating computational models. During the FY12 second quarter we have been working with New England Research Company to construct a tri-axial core-holder. We have built fluid control system for the coreflood system that can be ported to perform in-situ imaging of core. We have performed numerical simulations for groundwater impacts of CO{sub 2} and brine leakage using the reservoir model for Springerville-St John's Dome site. We have analyzed groundwater samples collected from Springerville site for major ion chemistry and isotopic composition. We are currently analyzing subsurface core and chip samples acquired for mineralogical composition.

  9. A Small-Particle Solar Receiver for High-Temperature Brayton Power Cycles- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this SDSU project, funded by SunShot, for the second quarter of fiscal year 2013.

  10. Experimental study of exclusive $^2$H$(e,e^\\prime p)n$ reaction mechanisms at high $Q^2$

    SciTech Connect (OSTI)

    Kim Egiyan; Gegham Asryan; Nerses Gevorgyan; Keith Griffioen; Jean Laget; Sebastian Kuhn; Gary Adams; Moscov Amaryan; Pawel Ambrozewicz; Marco Anghinolfi; Gerard Audit; Harutyun AVAKIAN; Harutyun Avakian; Hovhannes Baghdasaryan; Nathan Baillie; Jacques Ball; Nathan Baltzell; Steve Barrow; Vitaly Baturin; Marco Battaglieri; Ivan Bedlinski; Ivan Bedlinskiy; Mehmet Bektasoglu; Matthew Bellis; Nawal Benmouna; Barry Berman; Angela Biselli; Lukasz Blaszczyk; Sylvain Bouchigny; Sergey Boyarinov; Robert Bradford; Derek Branford; William Briscoe; William Brooks; Stephen Bueltmann; Volker Burkert; Cornel Butuceanu; John Calarco; Sharon Careccia; Daniel Carman; Antoine Cazes; Shifeng Chen; Philip Cole; Patrick Collins; Philip Coltharp; Dieter Cords; Pietro Corvisiero; Donald Crabb; Volker Crede; John Cummings; Natalya Dashyan; Rita De Masi; Raffaella De Vita; Enzo De Sanctis; Pavel Degtiarenko; Haluk Denizli; Lawrence Dennis; Alexandre Deur; Kahanawita Dharmawardane; Richard Dickson; Chaden Djalali; Gail Dodge; Joseph Donnelly; David Doughty; Michael Dugger; Steven Dytman; Oleksandr Dzyubak; Hovanes Egiyan; Lamiaa Elfassi; Latifa Elouadrhiri; Paul Eugenio; Renee Fatemi; Gleb Fedotov; Gerald Feldman; Robert Feuerbach; Robert Fersch; Michel Garcon; Gagik Gavalian; Gerard Gilfoyle; Kevin Giovanetti; Francois-Xavier Girod; John Goetz; Atilla Gonenc; Christopher Gordon; Ralf Gothe; Michel Guidal; Matthieu Guillo; Hayko Guler; Lei Guo; Vardan Gyurjyan; Cynthia Hadjidakis; Kawtar Hafidi; Hayk Hakobyan; Rafael Hakobyan; Charles Hanretty; John Hardie; F. Hersman; Kenneth Hicks; Ishaq Hleiqawi; Maurik Holtrop; Charles Hyde-Wright; Yordanka Ilieva; David Ireland; Boris Ishkhanov; Eugeny Isupov; Mark Ito; David Jenkins; Hyon-Suk Jo; Kyungseon Joo; Henry Juengst; Narbe Kalantarians; James Kellie; Mahbubul Khandaker; Wooyoung Kim; Andreas Klein; Franz Klein; Alexei Klimenko; Mikhail Kossov; Zebulun Krahn; Laird Kramer; V. Kubarovsky; Joachim Kuhn; Sergey Kuleshov; Jeff Lachniet; Jorn Langheinrich; David Lawrence; Ji Li; Kenneth Livingston; Haiyun Lu; Marion MacCormick; Claude Marchand; Nikolai Markov; Paul Mattione; Simeon McAleer; Bryan McKinnon; John McNabb; Bernhard Mecking; Surik Mehrabyan; Joseph Melone; Mac Mestayer; Curtis Meyer; Tsutomu Mibe; Konstantin Mikhaylov; Ralph Minehart; Marco Mirazita; Rory Miskimen; Viktor Mokeev; Kei Moriya; Steven Morrow; Maryam Moteabbed; James Mueller; Edwin Munevar Espitia; Gordon Mutchler; Pawel Nadel-Turonski; Rakhsha Nasseripour; Silvia Niccolai; Gabriel Niculescu; Maria-Ioana Niculescu; Bogdan Niczyporuk; Megh Niroula; Rustam Niyazov; Mina Nozar; Grant O'Rielly; Mikhail Osipenko; Alexander Ostrovidov; Kijun Park; Evgueni Pasyuk; Craig Paterson; Sergio Pereira; Joshua Pierce; Nikolay Pivnyuk; Dinko Pocanic; Oleg Pogorelko; Sergey Pozdnyakov; Barry Preedom; John Price; Yelena Prok; Dan Protopopescu; Brian Raue; Gregory Riccardi; Giovanni Ricco; Marco Ripani; Barry Ritchie; Federico Ronchetti; Guenther Rosner; Patrizia Rossi; Franck Sabatie; Julian Salamanca; Carlos Salgado; Joseph Santoro; Vladimir Sapunenko; Reinhard Schumacher; Vladimir Serov; Youri Sharabian; Nikolay Shvedunov; Alexander Skabelin; Elton Smith; Lee Smith; Daniel Sober; Daria Sokhan; Aleksey Stavinskiy; Samuel Stepanyan; Stepan Stepanyan; Burnham Stokes; Paul Stoler; Steffen Strauch; Mauro Taiuti; David Tedeschi; Ulrike Thoma; Avtandil Tkabladze; Svyatoslav Tkachenko; Luminita Todor; Clarisse Tur; Maurizio Ungaro; Michael Vineyard; Alexander Vlassov; Daniel Watts; Lawrence Weinstein; Dennis Weygand; M. Williams; Elliott Wolin; Michael Wood; Amrit Yegneswaran; Lorenzo Zana; Jixie Zhang; Bo Zhao; Zhiwen Zhao

    2007-06-01

    The reaction {sup 2}H(e,e{prime} p)n has been studied with full kinematic coverage for photon virtuality 1.75 < 5.5 {approx} GeV{sup 2}. Comparisons of experimental data with theory indicate that for very low values of neutron recoil momentum (p{sub n} < 100 MeV/c) the neutron is primarily a spectator and the reaction can be described by the plane-wave impulse approximation. For 100 < 750 MeV/c proton-neutron rescattering dominates the cross section, while {Delta} production followed by the N{Delta} {yields} NN transition is the primary contribution at higher momenta.

  11. Measurement of th eta and etaprime Transition Form Factors at q^2 = 112 GeV^2

    SciTech Connect (OSTI)

    Aubert, B.

    2006-05-16

    The authors report a study of the processes e{sup +}e{sup -} {yields} {eta}{gamma} and e{sup +}e{sup -} {yields} {eta}'{gamma} at a center-of-mass energy of 10.58 GeV, using a 232 fb{sup -1} data sample collected with the BABAR detector at the PEP-II collider at SLAC.

  12. Querying quantitative logic models (Q2LM) to study intracellular signaling networks and cell-cytokine interactions

    E-Print Network [OSTI]

    Morris, Melody K.

    Mathematical models have substantially improved our ability to predict the response of a complex biological system to perturbation, but their use is typically limited by difficulties in specifying model topology and parameter ...

  13. Measurement of the Neutron electric form factor at Q2=0.8 2(GeV\\\\c)

    SciTech Connect (OSTI)

    Derek Glazier

    2007-09-30

    Nucleon form factors allow a sensitive test for models of the nucleon. Recent experiments utilising polarisation observables have resulted, for the first time, in a model-independent determination of the neutron electric form factor GnE. This method employed an 80% longitudinally polarised, high intensity (10 uA) electon beam (883 MeV) that was quasi-elastically scattered off a liquid deuterium target in the reaction D (e, en)p. A neutron polarimeter was designed and installed to measure the ratio of transverse-to-longitudinal polarisation using neutron scattering asymmetries. This ratio allowed a determination of the neutron elastic form factor, GnE, free of the previous large systematic uncertainties associated with the deuterium wave function. The experiment took place in the A1 experimental hall at MAMI taking advantage of a high resolution magnetic spectrometer. A detailed investigation was carried out into the performance of the neutron polarimeter.

  14. What does the proton look like inside? Measurement of highQ 2 e -p neutral current

    E-Print Network [OSTI]

    . Alternatively, instead of a function of angle and energy, the cross section can be determined for di other. The energies reached are 27.5 GeV for electrons and 920 GeV for protons yielding a centre­of­mass energy (the energy available for the reaction) of 318 GeV (1 GeV is the kinetic energy of an electron

  15. ECOLOGICAL STUDIES OF WILLOW (SALIX CAROLINIANA): MONTHLY STATUS REPORT #13

    E-Print Network [OSTI]

    ) Continue Task 2.4 (Life history) Continue Task 2.5 (Spatial analysis of willow distribution) 2nd Jan ­ Mar colonized the islands. We then clipped willow seedlings and cuttings into small sections, placed them

  16. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. A Mathematical Model for Interplanetary Logistics

    E-Print Network [OSTI]

    de Weck, Olivier L.

    permission. A Mathematical Model for Interplanetary Logistics Christine Taylor; Miao Song; Diego Klabjan; Olivier de Weck; David Simchi-Levi Logistics Spectrum; Jan-Mar 2007; 41, 1; Military Module pg. 23 #12

  17. Halide and Oxy-Halide Eutectic Systems for High-Performance, High-Temperature Heat Transfer Fluids- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this University of Arizona project, funded by SunShot, for the second quarter of fiscal year 2013.

  18. Virtual Compton scattering and the generalized polarizabilities of the proton at Q2=0.92 and 1.76 GeV2

    E-Print Network [OSTI]

    Bertozzi, William

    Virtual Compton scattering (VCS) on the proton has been studied at the Jefferson Laboratory using the exclusive photon electroproduction reaction ep?ep?. This paper gives a detailed account of the analysis which has led ...

  19. Precise determination of the deuteron spin structure at low to moderate Q2 with CLAS and extraction of the neutron contribution

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Guler, N.; Fersch, R. G.; Kuhn, S. E.; Bosted, P.; Griffioen, K. A.; Keith, C.; Minehart, R.; Prok, Y.; Adhikari, K. P.; Adikaram, D.; et al

    2015-11-02

    In this study, we present the final results for the deuteron spin structure functions obtained from the full data set collected with Jefferson Lab's CLAS in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2 and 5.8 GeV were scattered from deuteron (15ND3) targets, dynamically polarized along the beam direction, and detected with CLAS. From the measured double spin asymmetry, the virtual photon absorption asymmetry Ad1 and the polarized structure function gd1 were extracted over a wide kinematic range (0.05 GeV2 more »a parametrization of the corresponding proton results to extract from these data the polarized structure functions An1 and g1n of the (bound) neutron, which are so far unknown in the resonance region, W « less

  20. Search for an additional heavy Higgs boson in the H->ZZ->2l2q/2v2q decay channel with ATLAS detector

    E-Print Network [OSTI]

    Wang, Chao; The ATLAS collaboration

    2015-01-01

    In July 2012, the ATLAS and CMS experiments at LHC reported the observation of a new particle with a mass of about 125GeV and with properties consistent with the expected SM Higgs boson. It's important to verify whether this new particle is part of an extended scalar sector as populated by various extensions to the SM such as 2HDM and EWS model, and searching for the additional Higgs can help us to better understand EWSB process, as well as precision measurement of the 125GeV resonance. The additional heavy Higgs search with centre-of-mass energy of 8TeV with an integrated luminosity of 20.3$fb^{-1}$ data collected by ATLAS detector is presented here, the mass range in this search is from 200GeV(llqq)/400GeV(vvqq) to 1TeV.

  1. Measured Lifetimes of Selected Metastable Levels of Arq+ Ions (Q=2, 3, 9, and 10) Stored in an Electrostatic Ion-Trap 

    E-Print Network [OSTI]

    Yang, L. S.; Church, David A.; Tu, S. G.; Jin, J.

    1994-01-01

    to the cylinder. The ions were selected on a charge-to-mass ratio basis before capture. Photons emitted in magnetic-dipole and electric-quadrupole transitions from levels with lifetimes exceeding 5 ms were selected by wavelength and recorded vs ion storage time...

  2. Transverse Single Spin Asymmetry in $e+p^\\uparrow \\to e+J/?+X $ and $Q^2$ -evolution of Sivers Function-II

    E-Print Network [OSTI]

    Rohini M. Godbole; Abhiram Kaushik; Anuradha Misra; Vaibhav S. Rawoot

    2014-08-30

    We present estimates of Single Spin Asymmetry(SSA) in the electroproduction of J/{\\psi} taking into account the transverse momentum dependent(TMD) evolution of the Sivers function. We estimate SSA for JLab, HERMES, COMPASS and eRHIC energies using color evaporation model of J/{\\psi}. We have calculated the asymmetry using recent parameters extracted by Echevarria et al. using the CSS approach to TMD evolution. These recent TMD evolution fits are based on the evolution kernel in which the perturbative part is resummed up to NLL accuracy. We have also estimated the asymmetry by using parameters which had been obtained by a fit by Anselmino et al., using both an exact numerical and an approximate analytical solution of the TMD evolution equations. We find that the variation among the different estimates obtained using TMD evolution is much smaller than between these on one hand and the estimates obtained using DGLAP evolution on the other. Even though the use of TMD evolution causes an overall reduction in asymmetries compared to the ones obtained without it, they remain sizable. Overall, upon use of TMD evolution, predictions for asymmetries stabilize.

  3. Transverse Single Spin Asymmetry in $e+p^\\uparrow \\to e+J/\\psi +X $ and $Q^2$ -evolution of Sivers Function-II

    E-Print Network [OSTI]

    Godbole, Rohini M; Misra, Anuradha; Rawoot, Vaibhav S

    2014-01-01

    We present estimates of Single Spin Asymmetry(SSA) in the electroproduction of J/{\\psi} taking into account the transverse momentum dependent(TMD) evolution of the Sivers function. We estimate SSA for JLab, HERMES, COMPASS and eRHIC energies using color evaporation model of J/{\\psi}. We have calculated the asymmetry using recent parameters extracted by Echevarria et al. using the CSS approach to TMD evolution. These recent TMD evolution fits are based on the evolution kernel in which the perturbative part is resummed up to NLL accuracy. We have also estimated the asymmetry by using parameters which had been obtained by a fit by Anselmino et al., using both an exact numerical and an approximate analytical solution of the TMD evolution equations. We find that the variation among the different estimates obtained using TMD evolution is much smaller than between these on one hand and the estimates obtained using DGLAP evolution on the other. Even though the use of TMD evolution causes an overall reduction in asymm...

  4. Study of the ¹²C(e,e'p) reaction in a correlations dominant regime with Q² = 2.0 (GeV/c)² and XB? > 1

    E-Print Network [OSTI]

    Monaghan, Peter (Peter Andrew)

    2008-01-01

    This experiment was motivated by studying short-range nucleon-nucleon correlations via multinucleon knockout reactions -- (e, e'pN). The data were taken in Hall A at Jefferson Lab using the pair of high resolution spectrometers ...

  5. CI2525 ESTRUCTURAS DISCRETAS I d-m 2015 P 1/35 P 2/35 Q 1/15 Q 2/15 TOTAL/5

    E-Print Network [OSTI]

    Meza, Oscar J.

    Edinson 21 17 12 7 3 1110502 Lago Ibañez, Giancarlo Stephan 1 1111274 Di Zio Castillo, Ricardo Andres 5 4,5 3 1110883 Rodriguez Fernandez, Luis Ely 12 13,5 0 2 1111391 Lupo Loyo, Pablo Francisco 13,5 1

  6. Quiz # 7, STAT 383, Prof. Suman Sanyal, April 8, 2009 (Q2, Page 354) To decide whether the pipe welds in a nuclear power plant meet

    E-Print Network [OSTI]

    Sanyal, Suman

    welds in a nuclear power plant meet specifications, a random sample of welds is to be selected : µ nuclear power plants is to determine if welds

  7. Measurement of the D* Meson Production Cross Section and F_2^{ccbar}, at High Q^2, in ep Scattering at HERA

    E-Print Network [OSTI]

    The H1 Collaboration

    2009-11-20

    The inclusive production of D*(2010) mesons in deep-inelastic ep scattering is measured in the kinematic region of photon virtuality 100 production are measured in the visible range defined by |eta(D*)| 1.5 GeV. The data were collected by the H1 experiment during the period from 2004 to 2007 and correspond to an integrated luminosity of 351 pb^{-1}. The charm contribution, F_2^{ccbar}, to the proton structure function F_2 is determined. The measurements are compared with QCD predictions.

  8. 1. (25 pts) Three point charges, q1, q2 and q3 that have the same +2 Coulomb charge are fixed to a circle of radius

    E-Print Network [OSTI]

    Akerib, Daniel S.

    of 6.0 nF and a plate area of 2 2 5.0 10 m- × is connected to a 12 V battery. a. What is the electric A wire and the magnetic field at point O is zero tesla. a. Determine the value of the current, I

  9. ACBEDGF1DIH P Q2R§STDVU@DVW RYX1`bacSedVagf ShFiSpaqSTr1H£s)t

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve4AJ01) (See Energy Level79AJ01) (NotAdvanced ABSTRACTS FOR3

  10. http://www.sigsemis.org Join:http://www.aisnet.org/sigs.shtml

    E-Print Network [OSTI]

    Chen-Burger, Yun-Heh (Jessica)

    , page 2 Vol 2 Issue 1 Table of Contents Jan.-Mar. 2005 The Official Quarterly Newsletter of AIS Special the Semantic Web a Reality BulletinSemantic Web & Information Systems The Official Quarterly Newsletter of AIS Systems The Official Quarterly Newsletter of AIS Special Interest Group on Semantic Web and Information

  11. Beasley Lab | Savannah River Ecology Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.30.2Lab News Oct-Dec 2015 Tom

  12. Beasley Lab | Savannah River Ecology Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.30.2Lab News Oct-Dec 2015

  13. Beasley Lab | Savannah River Ecology Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.30.2Lab News Oct-Dec 2015Recent

  14. Beasley Lab | Savannah River Ecology Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.30.2Lab News Oct-Dec

  15. Beasley Lab | Savannah River Ecology Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.30.2Lab News Oct-DecScavenging

  16. Beam-Target Double Spin Asymmetry A_LT in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized He-3 Target at 1.4<Q^2<2.7 GeV^2

    E-Print Network [OSTI]

    J. Huang; K. Allada; C. Dutta; J. Katich; X. Qian; Y. Wang; Y. Zhang; K. Aniol; J. R. M. Annand; T. Averett; F. Benmokhtar; W. Bertozzi; P. C. Bradshaw; P. Bosted; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; W. Chen; K. Chirapatpimol; E. Chudakov; E. Cisbani; J. C. Cornejo; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; R. De Leo; X. Deng; A. Deur; H. Ding; P. A. M. Dolph; D. Dutta; L. El Fassi; S. Frullani; H. Gao; F. Garibaldi; D. Gaskell; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; L. Guo; D. Hamilton; O. Hansen; D. W. Higinbotham; T. Holmstrom; M. Huang; H. F. Ibrahim; M. Iodice; X. Jiang; G. Jin; M. K. Jones; A. Kelleher; W. Kim; A. Kolarkar; W. Korsch; J. J. LeRose; X. Li; Y. Li; R. Lindgren; N. Liyanage; E. Long; H. -J. Lu; D. J. Margaziotis; P. Markowitz; S. Marrone; D. McNulty; Z. -E. Meziani; R. Michaels; B. Moffit; C. Muñoz Camacho; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Y. Oh; M. Osipenko; D. Parno; J. C. Peng; S. K. Phillips; M. Posik; A. J. R. Puckett; Y. Qiang; A. Rakhman; R. D. Ransome; S. Riordan; A. Saha; B. Sawatzky; E. Schulte; A. Shahinyan; M. H. Shabestari; S. Širca; S. Stepanyan; R. Subedi; V. Sulkosky; L. -G. Tang; A. Tobias; G. M. Urciuoli; I. Vilardi; K. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. -W. Zhang; B. Zhao; X. Zheng; L. Zhu; X. Zhu; X. Zong; for the Jefferson Lab Hall A Collaboration

    2012-02-10

    We report the first measurement of the double-spin asymmetry $A_{LT}$ for charged pion electroproduction in semi\

  17. Measurements of the Proton Electromagnetic Form Factor Ratio From Elastic e + p -> e + p Scattering at Momentum Transfer Q^2 = 2.5, 5.2, 6.7 and 8.5 (GeV/c)^2

    SciTech Connect (OSTI)

    Arthur Mkrtchyan

    2012-05-31

    Among the fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing the strong interaction dyna mics of the nucleon's quark constituents. Electromagnetic probes are traditionally preferered to the hadronic beams. The electromagnetic interaction is a powerful tool for investigating the nucleon structure since it is well understood and it reveals observables that can be directly interpreted in terms of the current carried by the quarks. Elastic scattering leads to the form factors that describe the spatial charge a nd current distributions inside the nucleon. The reaction mechanism is assumed to be one photon exchange, the electromagnetic interaction is exactly calculable in QED, and one can safely extract the information on the hadronic vertex. The most important feature of early measurements of proton form factor ratio G{sub E}{sup p}/G{sub M}{sup p} with recoil polarization technique at Q{sup 2} up to 5.6 (GeV/c){sup 2} is the sharp decline of the ratio with Q{sup 2} increases, indicating that G{sub E}{sup p} falls much faster than G{sub M}{sup p}. This contradicts to data obtained by Rosenbluth separation method. An intriguing question was whether G{sub E}{sup p} will continue to decrease or become constant when Q{sup 2} increases. New set of measurements of proton form factor ratio G{sub E}{sup p}/G{sub M}{sup p} at Q{sup 2} = 2.5, 5.2, 6.7 and 8.5 (GeV/c){sup 2} have been conducted at JLab Hall C using {approx}85% longitudinally polarized electron elastic scattering from unpolarized hydrogen target. Recoil protons were detected in the HMS magnetic spectrometer with the standard detector package, combined with newly installed trigger scintillators and Focal Plane Polarimeter. The BigCal electromagnetic calorimeter (1744 channel) have been used for electron detection. Data obtained in this experiment show that G{sub E}{sup p}/G{sub M}{sup p} ratio continued to drop with Q{sup 2} and may cross 'zero' at Q{sup 2} > 10-15 (GeV/c){sup 2}. Intensive theoretical and experimental efforts over the past decade have aimed at explaining the discrepancy between data for the proton form factor ratio G{sub E}{sup p}/G{sub M}{sup p} obtained from cross section and polarization measurements. It was assumed that the two photon exchange contribution might be responsible for difference of G{sub E}{sup p}/G{sub M}{sup p} ratio obtained by Rosenbluth separation method and recoil polarization technique. The kinematical dependence of polarization transfer observables in elastic electron-proton scattering at Q{sup 2} = 2.5 (GeV/c){sup 2} have been used in search of effects of 2{gamma} contribution. For a wide range of values of the virtual photon polarization {epsilon} ({epsilon} = 0.15, 0.63, and 0.77), the proton form factor ratio and longitudinal polarization transfer component were measured with statistical uncertainties of {+-}0.01 and {+-}0.005, respectively. Our data provide significant constraints on models of nucleon structure.

  18. Precision Rosenbluth Measurement of the Proton Elastic Electromagnetic Form Factors and Their Ratio at Q^2=2.64, 3.20, and 4.10 GeV^2

    SciTech Connect (OSTI)

    Issam A. Qattan

    2005-12-01

    Due to the inconsistency in the results of the mupGEp/GMp ratio of the proton, as extracted from the Rosenbluth and recoil polarization techniques, high precision measurements of the e-p elastic scattering cross sections were made at Q{sup 2} = 2.64, 3.20, and 4.10 GeV{sup 2}. Protons were detected, in contrast to previous measurements where the scattered electrons were detected, which dramatically decreased-dependent systematic uncertainties and corrections. A single spectrometer measured the scattered protons of interest while simultaneous measurements at Q{sup 2} = 0.5 GeV{sup 2} were carried out using another spectrometer which served as a luminosity monitor in order to remove any uncertainties due to beam charge and target density fluctuations. The absolute uncertainty in the measured cross sections is {approx}3% for both spectrometers and with relative uncertainties, random and slope, below 1% for the higher Q{sup 2} protons, and below 1% random and 6% slope for the monitor spectrometer. The extracted electric and magnetic form factors were determined to 4%-7% for GEp and 1.5% for GMp. The ratio mupGEp/GMp was determined to 4%-7% and showed mupGEp/GMp {approx} 1.0. The results of this work are in agreement with the previous Rosenbluth data and inconsistent with high-Q{sup 2} recoil polarization results, implying a systematic difference between the two techniques.

  19. Electroexcitation of the P33(1232), P11(1440), D13(1520), S11(1535) at Q^2=0.4 and 0.65(GeV/c)^2

    E-Print Network [OSTI]

    I. G. Aznauryan; V. D. Burkert; H. Egiyan; K. Joo; R. Minehart; L. C. Smith

    2004-12-21

    Using two approaches: dispersion relations and isobar model, we have analyzed recent high precision CLAS data on cross sections of \\pi^0, \\pi^+, and \\eta electroproduction on protons, and the longitudinally polarized electron beam asymmetry for p(\\vec{e},e'p)\\pi^0 and p(\\vec{e},e'n)\\pi^+. The contributions of the resonances P33(1232), P11(1440), D13(1520), S11(1535) to \\pi electroproduction and S11(1535) to \\eta electroproduction are found. The results obtained in the two approaches are in good agreement with each other. There is also good agreement between amplitudes of the \\gamma^* N \\to S11(1535) transition found in \\pi and \\eta electroproduction. For the first time accurate results are obtained for the longitudinal amplitudes of the P11(1440), D13(1520) and S11(1535) electroexcitation on protons.

  20. Electroproduction of p ?^{+} ?^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3

    E-Print Network [OSTI]

    G. V. Fedotov; V. I. Mokeev; V. D. Burkert; L. Elouadrhiri; E. N. Golovatch; B. S. Ishkhanov; E. L. Isupov; N. V. Shvedunov; for the CLAS Collaboration

    2008-09-09

    This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process $e p \\to e' p \\pi^{+} \\pi^{-} $. The data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the so-far unexplored kinematic region of photon virtuality 0.2 $analysis of the data allowed us to establish the most significant mechanisms contributing to the reaction. The non-resonant mechanisms account for a major part of cross-sections. However, we find sensitivity to s-channel excitations of low-mass nucleon resonances, especially to the $N(1440)P_{11}$ and $N(1520)D_{13}$ states in kinematical dependencies of the 1-fold differential cross-sections.

  1. Electroproduction of p?+?- [p pi superscript + pi superscript -] off protons at 0.2<Q2<0.6 GeV2 [0.2 < Q superscript 2 < 0.6 GeV superscript 2] and 1.3

    E-Print Network [OSTI]

    Rowntree, D.

    This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process ep?e'p?+?- [ep?e prime p pi superscript + pi superscript -]. The data were collected with ...

  2. Mathematica and Fortran programs for various analytic QCD couplings

    E-Print Network [OSTI]

    Cesar Ayala; Gorazd Cvetic

    2014-11-06

    We outline here the motivation for the existence of analytic QCD models, i.e., QCD frameworks in which the running coupling $A(Q^2)$ has no Landau singularities. The analytic (holomorphic) coupling $A(Q^2)$ is the analog of the underlying pQCD coupling $a(Q^2) \\equiv \\alpha_s(Q^2)/\\pi$, and any such $A(Q^2)$ defines an analytic QCD model. We present the general construction procedure for the couplings $A_{\

  3. Submitted to the International Europhysics Conference on High Energy Physics 99

    E-Print Network [OSTI]

    V. The cross­section, doe=dQ 2 , falls by six orders of magnitude between Q 2 = 400 and 40000 GeV 2=137 is the QED coupling constant, and Y \\Sigma = 1 \\Sigma (1 \\Gamma y) 2 with y = Q 2 =sx. The structure #12; where xq \\Sigma f = xq f (x; Q 2 ) \\Sigma x¯q f (x; Q 2 ) and xq f (x¯q f ) are the quark (anti

  4. --No Title--

    U.S. Energy Information Administration (EIA) Indexed Site

    ... 7 Q Q 2 3 5,908 Q Q 2,159 2,360 Principal Building Activity Education ... 386 34 49 46 257 9,874 673 1,993 2,228...

  5. The generalized GDH sum for He-3

    SciTech Connect (OSTI)

    Karl Slifer

    2004-06-02

    The Burkhardt-Cottingham, Bjorken and generalized GDH sum rules are all consequences of the Q^2-dependent dispersion relations for the virtual photon Compton amplitudes. These integrals are investigated for a He-3 target at low Q^2.

  6. The SM8 Universal Solvation Model Christopher J. Cramer and Donald G. Truhlar, University of Minnesota

    E-Print Network [OSTI]

    Truhlar, Donald G

    constants, redox potentials, solubilities, temperature-dependent absolute free energies of solvation pollutants, and the thermodynamics of processes taking place in electrochemical fuel cells. q1 q2 q3 q2 q1 q

  7. Non SUSY Searches at Juan A. Valls

    E-Print Network [OSTI]

    Fermilab

    ? 147 GeV/c 2 fi = 0.5 M LQ 1 ? 71 GeV/c 2 fi = 0.0 (95% CL) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 02pM MRS(A) × K­factor (NLO) Q 2 = Q 2 0 × 4 Q 2 = Q 2 0 / 4 Second Generation Leptoquark Mass (Ge

  8. Alcator C-MOD Quarterly Reports

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Reports Reports for 1997 Q1 (HTML) Q2 (HTML) Q3 (HTML) Q4 (HTML) Reports for 1998 Q1 (HTML) Q2 (HTML) Q3 (HTML) Q4 (HTML) Reports for 1999 Q1 (HTML) Q2 (HTML) Q3 (HTML) Q4 (HTML)...

  9. Canted Undulator Upgrade for GeoSoilEnviroCARS Sector 13 at the Advanced Photon Source

    SciTech Connect (OSTI)

    Sutton, Stephen

    2013-02-02

    Support for the beamline component of the canted undulator upgrade of Sector 13 (GeoSoilEnviroCARS; managed and operated by the University of Chicago) at the Advanced Photon Source (APS; Argonne National Laboratory) was received from three agencies (equally divided): NASA-SRLIDAP (now LARS), NSF-EAR-IF (ARRA) and DOE-Single Investigator Small Group (SISGR). The associated accelerator components (undulators, canted front end) were provided by the APS using DOE-ARRA funding. The intellectual merit of the research enabled by the upgrade lies in advancing our knowledge of the composition, structure and properties of earth materials; the processes they control; and the processes that produce them. The upgrade will facilitate scientific advances in the following areas: high pressure mineral physics and chemistry, non-crystalline and nano-crystalline materials at high pressure, chemistry of hydrothermal fluids, reactions at mineral-water interfaces, biogeochemistry, oxidation states of magmas, flow dynamics of fluids and solids, and cosmochemistry. The upgrade, allowing the microprobe to operate 100% of the time and the high pressure and surface scattering and spectroscopy instruments to receive beam time increases, will facilitate much more efficient use of the substantial investment in these instruments. The broad scientific community will benefit by the increase in the number of scientists who conduct cutting-edge research at GSECARS. The user program in stations 13ID-C (interface scattering) and 13ID-D (laser heated diamond anvil cell and large volume press) recommenced in June 2012. The operation of the 13ID-E microprobe station began in the Fall 2012 cycle (Oct.-Dec 2012). The upgraded canted beamlines double the amount of undulator beam time at Sector 13 and provide new capabilities including extended operations of the X-ray microprobe down to the sulfur K edge and enhanced brightness at high energy. The availability of the upgraded beamlines will advance the research being conducted at Sector 13.

  10. Experimental determination of the effective strong coupling constant

    SciTech Connect (OSTI)

    Alexandre Deur; Volker Burkert; Jian-Ping Chen; Wolfgang Korsch

    2005-09-15

    We extract an effective strong coupling constant from low Q2 data on the Bjorken sum. Using sum rules, we establish its Q2-behavior over the complete Q2-range. The result is compared to effective coupling constants extracted from different processes and to calculations based on Schwinger-Dyson equations, hadron spectroscopy or lattice QCD. Although the connection between the experimentally extracted effective coupling constant and the calculations is not clear, the results agree surprisingly well.

  11. Sistemas No-Integrveis 6.1 O Mtodo WKB Dependente do Tempo

    E-Print Network [OSTI]

    de Aguiar, Marcus A. M.

    explicitamente as derivadas que entram na equação de Schroedinger obtemos q2 q1 #12;6 O Caso não-Integrável 68

  12. DESY--09--036 27 January 2009

    E-Print Network [OSTI]

    60 energy and Q 2 and Finance, Univ. of Aegean, Greece U. Holm, R. Klanner, E. Lohrmann, H. Perrey, P. Schleper, T. Sch

  13. Resummed QCD Power Corrections to Nuclear Shadowing

    E-Print Network [OSTI]

    Qiu, J; Qiu, Jianwei; Vitev, Ivan

    2004-01-01

    We calculate and resum a perturbative expansion of nuclear enhanced power corrections to the structure functions measured in deeply inelastic scattering of leptons on a nuclear target. Our results for the Bjorken $x$-, $Q^2$- and $A$-dependence of nuclear shadowing in $F_2^A(x,Q^2)$ and the nuclear modifications to $F_L^A(x,Q^2)$, obtained in terms of the QCD factorization approach, are consistent with the existing data. We demonstrate that the low-$Q^2$ behavior of these data and the measured large longitudinal structure function point to a critical role for the power corrections when compared to other theoretical approaches.

  14. Resummed QCD Power Corrections to Nuclear Shadowing

    E-Print Network [OSTI]

    Jianwei Qiu; Ivan Vitev

    2005-01-10

    We calculate and resum a perturbative expansion of nuclear enhanced power corrections to the structure functions measured in deeply inelastic scattering of leptons on a nuclear target. Our results for the Bjorken $x$-, $Q^2$- and $A$-dependence of nuclear shadowing in $F_2^A(x,Q^2)$ and the nuclear modifications to $F_L^A(x,Q^2)$, obtained in terms of the QCD factorization approach, are consistent with the existing data. We demonstrate that the low-$Q^2$ behavior of these data and the measured large longitudinal structure function point to a critical role for the power corrections when compared to other theoretical approaches.

  15. Convective motion in collisionless trapped electron mode turbulence and Z. Lin1,3

    E-Print Network [OSTI]

    Lin, Zhihong

    instability, the turbulent transport saturates at a level of gyroBohm diffusivity vGB ¼ q2 i vi a. However, there is

  16. EERE PowerPoint 97-2004 Template: Green Version

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (Task 1) - Evaluation to begin Q2 - Some principal issues * Limits on fiber optics (temperature and clouding) * Limits on packers and work-arounds 16 | US DOE Geothermal...

  17. Analyticity properties and unitarity constraints of heavy meson form factors

    E-Print Network [OSTI]

    De Rafael, E; Eduardo de Rafael; Josep Taron; Rafael, Eduardo de; Taron, Josep

    1994-01-01

    We derive new bounds on the b-number form factor $F(q^2)$ of the B meson. (Revised version of hep-ph/9306214).

  18. DIFFRACTION 2000 SESSION: `Di raction in lepton-hadron collisions I'

    E-Print Network [OSTI]

    DIFFRACTION 2000 SESSION: `Di#11;raction in lepton-hadron collisions I' September 2 - 7, 2000; Conclusions #12; DIFFRACTION 2000 Paul Thompson Why measure open charm in di#11;raction ? #15; Charm mass Interactions? September 2000 2 #12; DIFFRACTION 2000 Paul Thompson Event Kinematics x IP = M 2 X +Q 2 W 2 +Q 2

  19. Motivation Selection CC Cross Sections Summary Charged Current DIS Cross Sections with a

    E-Print Network [OSTI]

    Raval, Amita

    Motivation Selection CC Cross Sections Summary Charged Current DIS Cross Sections polarised e+ 21st April 2010 1 / 15 #12;Motivation Selection CC Cross Sections Summary Charged Current Interaction: Motivation Extraction of MW d2(e+p) dxdQ2 = (1 + P) × G2 F M4 W 2(Q2 + M2 W )2 u + c + (1 - y)2

  20. Brian Foster -DIS01 -Bologna HERA II Physics

    E-Print Network [OSTI]

    V2 Q2 = 200 GeV2 Q2 = 2000 GeV2 #12;Brian Foster - DIS01 - Bologna 8 Active Filter Calorimeter ZEUS 6 systematics plus precision electron tagger. "Standard" Pb/scintillator calorimeter plus "active filter" of aerogel. Dipole spectrometer to measure converting e+e- pairs. "6m tagger" W/fibre to measure the energy

  1. Discrete Symmetries on the Light Front and a General Relation Connecting Nucleon Electric Dipole and Anomalous Magnetic Moments

    E-Print Network [OSTI]

    S. J. Brodsky; S. Gardner; D. S. Hwang

    2006-02-27

    We consider the electric dipole form factor, F_3(q^2), as well as the Dirac and Pauli form factors, F_1(q^2) and F_2(q^2), of the nucleon in the light-front formalism. We derive an exact formula for F_3(q^2) to complement those known for F_1(q^2) and F_2(q^2). We derive the light-front representation of the discrete symmetry transformations and show that time-reversal- and parity-odd effects are captured by phases in the light-front wave functions. We thus determine that the contributions to F_2(q^2) and F_3(q^2), Fock state by Fock state, are related, independent of the fundamental mechanism through which CP violation is generated. Our relation is not specific to the nucleon, but, rather, is true of spin-1/2 systems in general, be they lepton or baryon. The empirical values of the anomalous magnetic moments, in concert with empirical bounds on the associated electric dipole moments, can better constrain theories of CP violation. In particular, we find that the neutron and proton electric dipole moments echo the isospin structure of the anomalous magnetic moments, kappa^n ~ - kappa^p.

  2. Discrete Symmetries on the Light Front and a General Relation Connecting Nucleon Electric Dipole and Anomalous Magnetic Moments

    E-Print Network [OSTI]

    Brodsky, S J; Hwang, D S

    2006-01-01

    We consider the electric dipole form factor, F_3(q^2), as well as the Dirac and Pauli form factors, F_1(q^2) and F_2(q^2), of the nucleon in the light-front formalism. We derive an exact formula for F_3(q^2) to complement those known for F_1(q^2) and F_2(q^2). We derive the light-front representation of the discrete symmetry transformations and show that time-reversal- and parity-odd effects are captured by phases in the light-front wave functions. We thus determine that the contributions to F_2(q^2) and F_3(q^2), Fock-state by Fock-state, are related, independent of the fundamental mechanism through which CP violation is generated. Our relation is not specific to the nucleon, but, rather, is true of spin-1/2 systems in general, be they lepton or baryon. The empirical values of the anomalous magnetic moments, in concert with empirical bounds on the associated electric dipole moments, can better constrain theories of CP violation. In particular, we find that the neutron and proton electric dipole moments echo ...

  3. Precision measurements of the timelike electromagnetic form factors of pion, kaon, and proton

    E-Print Network [OSTI]

    Besson, David Zeke

    2005-12-01

    transfer of vertical bar Q(2 vertical bar)=13.48 GeV2 by the reaction e(+)e(-)-> h(+)h(-). The measurements are the first ever with identified pions and kaons of vertical bar Q (2)vertical bar > 4 GeV2, with the results F-pi(13.48 GeV2) = 0.075 +/- 0...

  4. Planetary Nebulae as astronomical tools, Gdansk, POLAND, June 28 -July 2, 2005 c M. Steffen et al., AIP, 2005 Modeling X-ray Emission from

    E-Print Network [OSTI]

    update steps (operator splitting): (a) Q(t) advection Q1(t +t) (b) Q1(t +t) diffusion Q2(t +t) energy update at constant (c) Q2(t +t) radiation Q (t +t) energy update at constant For step (b), we solve flux to the saturation value given by Eq.(5). Ionization is frozen during step (b), being updated

  5. Near Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors

    E-Print Network [OSTI]

    P. Khetarpal; P. Stoler; I. G. Aznauryan; V. Kubarovsky; K. P. Adhikari; D. Adikaram; M. Aghasyan; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; M. Anghinolfi; H. Avakian; H. Baghdasaryan; J. Ball; N. A. Baltzell; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; J. Bono; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; G. Charles; P. L. Cole; M. Contalbrigo; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; D. Doughty; M. Dugger; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; P. Eugenio; G. Fedotov; S. Fegan; R. Fersch; J. A. Fleming; A. Fradi; M. Y. Gabrielyan; M. Garçon; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; W. Gohn; E. Golovatch; R. W. Gothe; K. A. Griffioen; B. Guegan; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; C. Hanretty; N. Harrison; K. Hicks; D. Ho; M. Holtrop; C. E. Hyde; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; H. S. Jo; K. Joo; D. Keller; M. Khandaker; A. Kim; W. Kim; F. J. Klein; S. Koirala; A. Kubarovsky; S. V. Kuleshov; N. D. Kvaltine; S. Lewis; K. Livingston; H. Y. Lu; I. J. D. MacGregor; Y. Mao; D. Martinez; M. Mayer; B. McKinnon; C. A. Meyer; T. Mineeva; M. Mirazita; V. Mokeev; R. A. Montgomery; H. Moutarde; E. Munevar; C. Munoz Camacho; P. Nadel-Turonski; R. Nasseripour; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; R. Paremuzyan; K. Park; S. Park; E. Pasyuk; E. Phelps; J. J. Phillips; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; D. Protopopescu; A. J. R. Puckett; B. A. Raue; G. Ricco; D. Rimal; M. Ripani; G. Rosner; P. Rossi; F. Sabatié; M. S. Saini; C. Salgado; N. A. Saylor; D. Schott; R. A. Schumacher; E. Seder; H. Seraydaryan; Y. G. Sharabian; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; I. I. Strakovsky; S. Strauch; M. Taiuti; W. Tang; C. E. Taylor; S. Tkachenko; M. Ungaro; B. Vernarsky; H. Voskanyan; E. Voutier; N. K. Walford; L. B. Weinstein; D. P. Weygand; M. H. Wood; N. Zachariou; J. Zhang; Z. W. Zhao; I. Zonta

    2012-11-29

    We report the measurement of near threshold neutral pion electroproduction cross sections and the extraction of the associated structure functions on the proton in the kinematic range $Q^2$ from 2 to 4.5 GeV$^2$ and $W$ from 1.08 to 1.16 GeV. These measurements allow us to access the dominant pion-nucleon s-wave multipoles $E_{0+}$ and $S_{0+}$ in the near-threshold region. In the light-cone sum-rule framework (LCSR), these multipoles are related to the generalized form factors $G_1^{\\pi^0 p}(Q^2)$ and $G_2^{\\pi^0 p}(Q^2)$. The data are compared to these generalized form factors and the results for $G_1^{\\pi^0 p}(Q^2)$ are found to be in good agreement with the LCSR predictions, but the level of agreement with $G_2^{\\pi^0 p}(Q^2)$ is poor.

  6. Infrared Freezing of Euclidean QCD observables

    E-Print Network [OSTI]

    Paul M. Brooks; C. J. Maxwell

    2006-08-22

    We consider the leading one-chain term in a skeleton expansion for QCD observables and show that for energies Q^2>\\Lambda^2, where Q^2=\\Lambda^2 is the Landau pole in the coupling, the skeleton expansion result is equivalent to the standard Borel integral representation, with ambiguities related to infrared (IR) renormalons. For Q^2freezing behaviour, vanishing at Q^2=0. Finiteness at Q^2=\\Lambda^2 implies specific relations between the residues of IR and UV renormalons in the Borel plane. These relations, only one of which has previously been noted (though it remained unexplained) are shown to follow from the continuity of the characteristic function in the skeleton expansion. By considering the compensation of non-perturbative and perturbative ambiguities we are led to a result for the Q^2 dependence of these observables at all Q^2, in which there is a single undetermined non-perturbative parameter, and which involves the skeleton expansion characteristic function. The observables freeze to zero in the infrared. We briefly consider the freezing behaviour of the Minkowskian R_{e+e-} ratio.

  7. Study of Double Spin Asymmetries in Inclusive ep Scattering at Jefferson Lab

    SciTech Connect (OSTI)

    Kang, Hoyoung [Seoul National University, Seoul, Korea

    2014-08-01

    The spin structure of the proton has been investigated in the high Bjorken x and low momentum transfer Q^2 region. We used Jefferson Lab's polarized electron beam, a polarized target, and a spectrometer to get both the parallel and perpendicular spin asymmetries Apar and Aperp. These asymmetries produced the physics asymmetries A_1 and A_2 and spin structure functions g_1 and g_2. We found Q^2 dependences of the asymmetries at resonance region and higher-twist effects. Our result increases the available data on the proton spin structure, especially at resonance region with low Q^2. Moreover, A_2 and g_2 data show clear Q^2 evolution, comparing with RSS and SANE-BETA. Negative resonance in A_2 data needs to be examined by theory. It can be an indication of very negative transverse-longitudinal interference contribution at W ~ 1.3 GeV. Higher twist effect appears at the low Q^2 of 1.9 GeV^2, although it is less significant than lower Q^2 data of RSS. Twist03 matrix element d_2 was calculated using our asymmetry fits evaluation at Q^2 – 1.9 GeV^2. D-bar_2 = -0.0087±0.0014 was obtained by integrating 0.47 ? x ? 0.87.

  8. Three body kinematic endpoints in SUSY models with non-universal Higgs masses.

    E-Print Network [OSTI]

    Lester, Christopher G; Parker, Michael A; White, Martin J

    ˜L, c˜L) ? g˜q 1.5% (u˜R, c˜R) ? g˜q 2.3% g˜ ? ?˜±1 qq¯ 6.8% (u˜L, c˜L) ? ?˜+1 q 63% g˜ ? ?˜01qq¯ 2.2% (u˜L, c˜L) ? ?˜+2 q 2.5% g˜ ? ?˜02qq¯ 3.4% (d˜L, s˜L) ? ?˜01q 2.1% (d˜R, s˜R) ? ?˜01q 98% (d˜L, s˜L) ? ?˜02q 30% (d˜R, s˜R) ? ?˜02q 1% (d˜L, s˜L) ? ?...

  9. Power-like corrections and the determination of the gluon distribution

    E-Print Network [OSTI]

    F. Hautmann

    2006-10-06

    Power-suppressed corrections to parton evolution may affect the theoretical accuracy of current determinations of parton distributions. We study the role of multigluon-exchange terms in the extraction of the gluon distribution for the Large Hadron Collider (LHC). Working in the high-energy approximation, we analyze multi-gluon contributions in powers of 1/Q^2. We find a moderate, negative correction to the structure function's derivative d F_2 / d \\ln Q^2, characterized by a slow fall-off in the region of low to medium Q^2 relevant for determinations of the gluon at small momentum fractions.

  10. Evaluation of local preconditioners for multigrid solutions of the compressible Euler equations 

    E-Print Network [OSTI]

    McCann, Barrett Taylor

    1996-01-01

    for Convergence, First-Order Solver, 64x32 Square Grid, Free Boundaries, n = 20', p = 2, q = 2 27 Work Requirements for Convergence, z = 0 Solver, 64x32 Square Grid, Free Boundaries, n = 20', p = 2, q = 2. . . . . . . . . . . , Work Requirements... for Convergence, First-Order Solver, 64x32 Square Grid, Periodic Boundaries, n = 20', p = 2, g = 2 30 Work Requirements for Convergence, a = 0 Solver, 64x32 Square Grid, Periodic Boundaries, n = 20', p = 2, q = 2 Work Requirements for Convergence, First...

  11. Infrared freezing of Euclidean QCD observables in the one-chain approximation

    E-Print Network [OSTI]

    C. J. Maxwell

    2006-10-15

    We consider the one-chain term in a skeleton expansion for Euclidean QCD observables. Focusing on the particular example of the Adler D function, we show that although there is a Landau pole in the coupling at Q^2=\\Lambda^2 which renders fixed-order perturbative results infinite, the Landau pole is absent in the all-orders one-chain result. In this approximation one has finiteness and continuity at Q^2=\\Lambda^2, and a smooth freezing as Q^2 decreases to 0.

  12. Delineating the (Un)polarized Photon Content of the Nucleon

    E-Print Network [OSTI]

    A. Mukherjee; C. Pisano

    2004-05-12

    We investigate the QED Compton process (both elastic and inelastic) in unpolarized and longitudinally polarized electron-proton scattering. The cross section can be expressed in terms of the equivalent photon distribution of the proton. We provide the necessary kinematical cuts to extract the photon content of the proton at HERMES and eRHIC. We point out that such a process can give valuable information on $g_1(x_B, Q^2)$ in the small $x_B$, broad $Q^2$ region at eRHIC and especially in the lower $Q^2$, medium $x_B$ region in fixed target experiments.

  13. Delineating the (Un)polarized Photon Content of the Nucleon

    E-Print Network [OSTI]

    Mukherjee, A

    2004-01-01

    We investigate the QED Compton process (both elastic and inelastic) in unpolarized and longitudinally polarized electron-proton scattering. The cross section can be expressed in terms of the equivalent photon distribution of the proton. We provide the necessary kinematical cuts to extract the photon content of the proton at HERMES and eRHIC. We point out that such a process can give valuable information on $g_1(x_B, Q^2)$ in the small $x_B$, broad $Q^2$ region at eRHIC and especially in the lower $Q^2$, medium $x_B$ region in fixed target experiments.

  14. DOE/EIA-0202(89/2Q)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy4Q)2Q)3Q)2Q)

  15. Measurement of charged current deep inelastic scattering cross sections with a longitudinally polarised electron beam at HERA

    E-Print Network [OSTI]

    ZEUS Collaboration

    2009-03-24

    Measurements of the cross sections for charged current deep inelastic scattering in e-p collisions with longitudinally polarised electron beams are presented. The measurements are based on a data sample with an integrated luminosity of 175 pb-1 collected with the ZEUS detector at HERA at a centre-of-mass energy of 318 GeV. The total cross section is given for positively and negatively polarised electron beams. The differential cross-sections dsigma/dQ2, dsigma/dx and dsigma/dy are presented for Q2>200 GeV2. The double-differential cross-section d2sigma/dxdQ2 is presented in the kinematic range 280<Q2<30000 GeV2 and 0.015

  16. Electrolux Gibson Air Conditioner and Equator Clothes Washer...

    Broader source: Energy.gov (indexed) [DOE]

    DOE testing in support of the ENERGY STAR program has revealed that an Electrolux Gibson air conditioner (model GAH105Q2T1) and an Equator clothes washer (model EZ 3720 CEE), both...

  17. PowerPoint Presentation - FY13 Q1 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Documents & Publications Low-Cost Self-Cleaning Reflector Coatings for CSP Collectors - FY13 Q2 Low-Cost Self-Cleaning Coatings for CSP Collectors Self-Cleaning CSP Optics with EDS...

  18. Optimizing Path Query Performance: Graph Clustering Strategies \\Lambda

    E-Print Network [OSTI]

    information systems, fleet management, public transit, troop movement, urban planning, to name a few. Among energy­efficient path from A to B that does not use toll roads.'' Q2: ``Display all the garages reachable

  19. Photosynthes& Research 38:309-314, 1993. 1993 Kluwer Academic Publishers. Printed in the Netherlands.

    E-Print Network [OSTI]

    Govindjee

    Bochum 1, Germany; 3DepartmentsofPhysiology & Biophysics and Plant Biology, University of Illinois and Wraight 1983). A double reduction of QB leads to the formation of Q2, which is then protonated to form QBH

  20. Frequently Asked Questions about the Math Placement Test (MPT) (last updated on 2015 June 26) (Q1) Where is the Math Placement Test main web page?

    E-Print Network [OSTI]

    Saskatchewan, University of

    ) (Q1) Where is the Math Placement Test main web page? (A1) http://math.usask.ca/placement Information finalized. (Q2) Where is the Sample Math Placement Test main web page? (A2) http

  1. --No Title--

    Gasoline and Diesel Fuel Update (EIA)

    ... 7 Q Q 2 4 5,908 Q Q 1,748 3,448 Principal Building Activity Education ... 386 Q 28 107 248 9,874 Q 332 4,202 5,299...

  2. --No Title--

    U.S. Energy Information Administration (EIA) Indexed Site

    ... 7 Q Q 2 4 5,908 Q Q 1,418 3,688 Principal Building Activity Education ... 386 Q Q 27 340 9,874 Q Q 1,017 8,586...

  3. --No Title--

    U.S. Energy Information Administration (EIA) Indexed Site

    ... 7 Q Q Q 2 3 5,908 Q Q Q 1,516 3,036 Principal Building Activity Education ... 386 281 60 31 14 Q 9,874 3,696 2,911...

  4. Model independent extraction of the axial mass parameter in CCQE anti neutrino-nucleon scattering

    E-Print Network [OSTI]

    Cinabro, David

    . In order to understand neutrino oscillations, a detailed knowledge of neutrino scattering between 0 and 10 contribution FP (q2 ) is suppressed by powers of the small lepton-nucleon mass ratio. This leaves only

  5. 2009 Wind Technologies Market Report

    E-Print Network [OSTI]

    Wiser, Ryan

    2010-01-01

    Monthly. Bloomberg New Energy Finance. 2010a. Q1 Wind MarketOutlook. February 2010. Bloomberg New Energy Finance.Bloomberg New Energy Finance. 2010b. Q2 Wind Market Outlook.

  6. Supplement on imaginary quadratic UFDs (a) Let ? ? C be such ...

    E-Print Network [OSTI]

    2012-10-25

    Supplement on imaginary quadratic UFDs. (a) Let ? ? C be such that q:= ???2 is a non-prime integer ? 2. Show that any Z-prime divisor of q is irreducible in ...

  7. Lesson 13 Exam 1 Debriefing and Power Rule Review

    E-Print Network [OSTI]

    2013-09-18

    Sep 18, 2013 ... An appliance manufacturer's cost of producing q refrigerators is. C(q) = q2 + 2q + ... q(t)=5t + 1 refrigerators are produced in t hours. Express the.

  8. Compito di Robotica II Origine: Automazione degli Impianti, 28 Giugno 1989

    E-Print Network [OSTI]

    De Luca, Alessandro

    al baricentro del rispettivo corpo rispetto ad un asse normale al piano del moto. 1. Derivare il prismatico con l'asse x0; q2 = la posizione del carico in punta rispetto all'asse del primo giunto. Hint

  9. What is visual structure? That which allows you to identify a object?

    E-Print Network [OSTI]

    Lewicki, Michael S.

    #12;Surface normals The unit surface normal is ^n = n |n| = (-p, -q, 1)T 1 + p2 + q2 Now we can (edges, blobs, junctions, etc) · feature classes (e.g. orientation, depth, illumination, and reflectance

  10. file://C:\\Documents and Settings\\bh5\\My Documents\\Energy Effici

    Gasoline and Diesel Fuel Update (EIA)

    Products 3 1 1 333 Machinery Q 2 * 334 Computer and Electronic Products * 1 1 335 Electrical Equip., Appliances, and Components 27 69 21 336 Transportation Equipment 4 5 2 337...

  11. Form factors for $\\mathrm B_\\mathrm s \\to \\mathrm K \\ell ?$ decays in Lattice QCD

    E-Print Network [OSTI]

    Felix Bahr; Fabio Bernardoni; John Bulava; Anosh Joseph; Alberto Ramos; Hubert Simma; Rainer Sommer

    2014-11-14

    We present the current status of the computation of the form factor $f_+ (q^2)$ for the semi-leptonic decay $\\mathrm B_\\mathrm s \\to \\mathrm K \\ell \

  12. Diophantine Equations and Congruent Number Equation Solutions

    E-Print Network [OSTI]

    Mamuka Meskhishvili

    2015-04-16

    By using pairs of nontrivial rational solutions of congruent number equation $$ C_N:\\;\\;y^2=x^3-N^2x, $$ constructed are pairs of rational right (Pythagorean) triangles with one common side and the other sides equal to the sum and difference of the squares of the same rational numbers. The parametrizations are found for following Diophantine systems: \\begin{align*} (p^2\\pm q^2)^2-a^2 & =\\square_{1,2}\\,, \\\\[0.2cm] c^2-(p^2\\pm q^2)^2 & =\\square_{1,2}\\,, \\\\[0.2cm] a^2+(p^2\\pm q^2)^2 & =\\square_{1,2}\\,, \\\\[0.2cm] (p^2\\pm q^2)^2-a^2 & =(r^2\\pm s^2)^2. \\end{align*}

  13. Coherent State on SUq(2) Homogeneous Space

    E-Print Network [OSTI]

    N. Aizawa; R. Chakrabarti

    2009-06-30

    The generalized coherent states for quantum groups introduced by Jurco and Stovicek are studied for the simplest example SU_q(2) in full detail. It is shown that the normalized SU_q(2) coherent states enjoy the property of completeness, and allow a resolution of the unity. This feature is expected to play a key role in application of these coherent states in physical models. The homogeneous space of SU_q(2), i.e. the q-sphere of Podles, is reproduced in complex coordinates by using the coherent states. Differential calculus in the complex form on the homogeneous space is developed. High spin limit of the SU_q(2) coherent states is also discussed.

  14. Supercritical Carbon Dioxide Turbo-Expander and Heat Exchangers...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of a High Efficiency Hot Gas Turbo-expander and Low Cost Heat Exchangers for Optimized CSP Supercritical CO2 Operation 10-Megawatt Supercritical Carbon Dioxide Turbine - FY13 Q2...

  15. Perturbative QCD Evolution and Color Dipole Picture

    E-Print Network [OSTI]

    Dieter Schildknecht

    2011-04-05

    The proton structure function in the diffraction region of small Bjorken-$x$ and $10 {\\rm GeV}^2 \\le Q^2 \\le 100 {\\rm GeV}^2$ behaves as $F_2 (x, Q^2) = F_2 (W^2) = f_0 \\cdot (W^2)^{C_2}$, where $x = Q^2 / W^2$. The exponent $C_2$ of the $\\gamma^* p$ center-of-mass energy squared, $W^2$, is predicted from evolution of the flavor-singlet quark distribution, $C_2 = 0.29$, and the only free parameter, the normalization $f_0 = 0.063$, is fitted. The evolution of the gluon density multiplied by $\\alpha_s (Q^2)$ is dentical to the evolution of the flavor-singlet quark density. This simple picture is at variance with the standard approach to evolution based on the coupled equations of flavor-singlet and gluon density.

  16. Technology Performance Exchange

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Q3 Deliverable: Develop Site Workflows and Design Website Layout Q3 GoNo-Go DOE Decision Point: Passed Q1 Milestone: Develop Data Entry Forms Q2 Milestone: Release Technology...

  17. Fluorescent Pigments for High-Performance Cool Roofing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Identified, End Q2 3. 500g of 2 New Pigments, End Q3 4. ESR Measured on New Cool Roof Coating, End Q4 Budget: Total DOE to date: 474,132 Total future DOE : 0 Key Partners:...

  18. Tobacco Control in North Dakota, 2004-2012: Reaching for Higher Ground

    E-Print Network [OSTI]

    Rosenbaum, Daniel J.; Barnes, Richard L.; Glantz, Stanton A.

    2012-01-01

    posted to Local Coordinators grantees only site. All schoolboards of health support Q1 Grantees encouraging all schools4. Develop a list of steps grantees Q2 Center should take to

  19. Convergence Rate of Proximal-Gradient with a General Step-Size Mark Schmidt

    E-Print Network [OSTI]

    Marlin, Benjamin

    in terms of to give = 2 L+µ which yields Q 2 L+µ = 1 - 2µ L+µ = L-µ L+µ . 1 #12;2 Useful inequalitites We

  20. Comparison of NNLO DIS scheme splitting functions with results from exact gluon kinematics at small x.

    E-Print Network [OSTI]

    White, C D; Thorne, Robert S

    ) = ?S ? ? 0 dk2 k2 hi(k2/Q2)f(N, k2, Q20)gB(N,Q 2 0), (1) where gB is the bare gluon distribution at momentum scale Q20, and the strong coupling ?S is fixed at LL order. The hi(k2/Q2) are the impact factors coupling the virtual photon to the gluon... )gB(N,Q 2 0), (2) which serves to define the impact factor h2. In a general factorisation scheme, one loses the simple inter- pretation of h2 as the coefficient function relating the gluon distribution to the structure function. Instead it represents...

  1. Measurement of electron neutrino quasielastic and quasielastic-like scattering on hydrocarbon at $\\langle E_{\

    E-Print Network [OSTI]

    Wolcott, J; Bellantoni, L; Bercellie, A; Betancourt, M; Bodek, A; Bravar, A; Budd, H; Carneiro, M F; Chvojka, J; da Motta, H; Devan, J; Dytman, S A; Diaz, G A; Eberly, B; Felix, J; Fields, L; Fine, R; Galindo, R; Gallagher, H; Ghosh, A; Golan, T; Gran, R; Harris, D A; Higuera, A; Kiveni, M; Kleykamp, J; Kordosky, M; Le, T; Maher, E; Manly, S; Mann, W A; Marshall, C M; Caicedo, D A Martinez; McFarland, K S; McGivern, C L; McGowan, A M; Messerly, B; Miller, J; Mislivec, A; Morfin, J G; Mousseau, J; Muhlbeier, T; Naples, D; Nelson, J K; Norrick, A; Osta, J; Paolone, V; Park, J; Patrick, C E; Perdue, G N; Rakotondravohitra, L; Ransome, R D; Ray, H; Ren, L; Rimal, D; Rodrigues, P A; Ruterbories, D; Schellman, H; Schmitz, D W; Salinas, C J Solano; Tagg, N; Tice, B G; Valencia, E; Walton, T; Wospakrik, M; Zavala, G; Zhang, D; Ziemer, B P

    2015-01-01

    The first direct measurement of electron-neutrino quasielastic and quasielastic-like scattering on hydrocarbon in the few-GeV region of incident neutrino energy has been carried out using the MINERvA detector in the NuMI beam at Fermilab. The flux-integrated differential cross sections in electron production angle, electron energy and $Q^{2}$ are presented. The ratio of the quasielastic, flux-integrated differential cross section in $Q^{2}$ for $\

  2. Measurement of electron neutrino quasielastic and quasielastic-like scattering on hydrocarbon at $\\langle E_? \\rangle $ = 3.6 GeV

    E-Print Network [OSTI]

    MINERvA Collaboration; J. Wolcott; O. Altinok; L. Bellantoni; A. Bercellie; M. Betancourt; A. Bodek; A. Bravar; H. Budd; M. F. Carneiro; J. Chvojka; H. da Motta; J. Devan; S. A. Dytman; G. A. Diaz; B. Eberly; J. Felix; L. Fields; R. Fine; R. Galindo; H. Gallagher; A. Ghosh; T. Golan; R. Gran; D. A. Harris; A. Higuera; M. Kiveni; J. Kleykamp; M. Kordosky; T. Le; E. Maher; S. Manly; W. A. Mann; C. M. Marshall; D. A. Martinez Caicedo; K. S. McFarland; C. L. McGivern; A. M. McGowan; B. Messerly; J. Miller; A. Mislivec; J. G. Morfin; J. Mousseau; T. Muhlbeier; D. Naples; J. K. Nelson; A. Norrick; J. Osta; V. Paolone; J. Park; C. E. Patrick; G. N. Perdue; L. Rakotondravohitra; R. D. Ransome; H. Ray; L. Ren; D. Rimal; P. A. Rodrigues; D. Ruterbories; H. Schellman; D. W. Schmitz; C. J. Solano Salinas; N. Tagg; B. G. Tice; E. Valencia; T. Walton; M. Wospakrik; G. Zavala; D. Zhang; B. P. Ziemer

    2015-11-09

    The first direct measurement of electron-neutrino quasielastic and quasielastic-like scattering on hydrocarbon in the few-GeV region of incident neutrino energy has been carried out using the MINERvA detector in the NuMI beam at Fermilab. The flux-integrated differential cross sections in electron production angle, electron energy and $Q^{2}$ are presented. The ratio of the quasielastic, flux-integrated differential cross section in $Q^{2}$ for $\

  3. Virtual Compton Scattering: Results from Jefferson Lab

    SciTech Connect (OSTI)

    L. Van Hoorebeke

    2003-05-01

    Virtual Compton Scattering o013 the proton has been studied at Q 2 -values of 1:0 and 1:9 (GeV=c) 2 in Hall A at the Thomas Je013erson National Accelerator Facility (JLab). Data were taken below and above the pion production threshold as well as in the resonance region. Results obtained below pion threshold at Q 2 = 1:0 (GeV=c) 2 are presented in this paper.

  4. Deuteron Spin Structure Functions in the Resonance and DIS Regions

    SciTech Connect (OSTI)

    S. Kulagin; W. Melnitchouk

    2007-10-03

    We derive relations between spin-dependent nuclear and nucleon g_1 and g_2 structure functions, valid at all Q^2, and in both the resonance and deep inelastic regions. We apply the formalism to the specific case of the deuteron, which is often used as a source of neutron structure information, and compare the size of the nuclear corrections calculated using exact kinematics and using approximations applicable at large Q^2.

  5. Comment on "High-Precision Determination of the Electric and Magnetic Form Factors of the Proton"

    E-Print Network [OSTI]

    J. Arrington

    2011-08-15

    In a recent Letter, Bernauer, et al. present fits to the proton electromagnetic form factors, GEp(Q^2) and GMp(Q^2), along with extracted proton charge and magnetization radii based on large set of new, high statistical precision (<0.2%) cross section measurements. The Coulomb corrections they apply differ dramatically from more modern and complete calculations, implying significant error in their final results.

  6. Coulomb Interaction Symmetries and the Mayer Series in the TwoDimensional Dipole Gas

    E-Print Network [OSTI]

    'atica­ICEx, UFMG, CP 702, Belo Horizonte MG 30.161­970, Brazil 2 Dep. F'isica­ICEx, UFMG, CP 702, Belo Horizonte MG 30.161­970, Brazil 3 Instituto de F'isica, Universidade de S~ao Paulo 01452 S~ao Paulo, SP, Brazil­dimensional box \\Lambda carrying 2 #12; vectorial moments q of unit length (q 2 R 2 ; q 2 = 1), interacting via

  7. PTG exam 2322011 short answers 75. For this cyclic process: 0dUQW

    E-Print Network [OSTI]

    Zevenhoven, Ron

    PTG exam 2322011 ­ short answers 75. For this cyclic process: 0dUQW a. Q1 + W2 + Q2 + W3 = 0 W3 = ( Q1 + W2 + Q2) = (180 + 50 200) = 30 J; Given off ­W3 = 30 J. Or, if also taking into consideration input W2, then total given off W3 ­ W2 = 20 J (system gain + 20 J) b

  8. hepph/9512272 ON THE THEORETICAL STATUS OF

    E-Print Network [OSTI]

    (š)N scattering processes are described by six further structure functions W š;\\Sigma 2 , xW š;\\Sigma 3 , F 2Z structure at short distances. Since both charged leptons (e \\Sigma ; ¯ \\Sigma ) and neutrinos (š; š) may ) collects couplings and propagator terms, e.g. P l \\Sigma ;fl (Q 2 ) = 2�ff 2 =Q 4 , P š;W +(Q 2 ) = G 2 F M

  9. Neutron scattering investigation of (TMTTF)2PF6

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    of excitations gapped (Uhrig et Schulz PRB 54, R9624 (1996)) at 2 S=0 S=1 #12;Magnetic excitations in the SP: l(q)= +E(q) and s(q)= 2{sup[E(q/2),E[(q-qSP)/2]} (Uhrig & Schulz PRB 54, R9624 (1996)) qSP=/a #12-Leylekian et al PRB 7 R180405 (2004)) #12;TSP=13K Thermal dependence of the (TMTTF)2PF6 (D12) (1

  10. $B\\to Kl^+l^-$ decay form factors from three-flavor lattice QCD

    E-Print Network [OSTI]

    Jon A. Bailey; A. Bazavov; C. Bernard; C. M. Bouchard; C. DeTar; Daping Du; A. X. El-Khadra; J. Foley; E. D. Freeland; E. Gámiz; Steven Gottlieb; U. M. Heller; R. D. Jain; J. Komijani; A. S. Kronfeld; J. Laiho; L. Levkova; Yuzhi Liu; P. B. Mackenzie; Y. Meurice; E. T. Neil; Si-Wei Qiu; J. N. Simone; R. Sugar; D. Toussaint; R. S. Van de Water; Ran Zhou

    2015-09-21

    We compute the form factors for the $B \\to Kl^+l^-$ semileptonic decay process in lattice QCD using gauge-field ensembles with 2+1 flavors of sea quark, generated by the MILC Collaboration. The ensembles span lattice spacings from 0.12 to 0.045 fm and have multiple sea-quark masses to help control the chiral extrapolation. The asqtad improved staggered action is used for the light valence and sea quarks, and the clover action with the Fermilab interpretation is used for the heavy $b$ quark. We present results for the form factors $f_+(q^2)$, $f_0(q^2)$, and $f_T(q^2)$, where $q^2$ is the momentum transfer, together with a comprehensive examination of systematic errors. Lattice QCD determines the form factors for a limited range of $q^2$, and we use the model-independent $z$ expansion to cover the whole kinematically allowed range. We present our final form-factor results as coefficients of the $z$ expansion and the correlations between them, where the errors on the coefficients include statistical and all systematic uncertainties. We use this complete description of the form factors to test QCD predictions of the form factors at high and low $q^2$. We also compare a Standard-Model calculation of the branching ratio for $B \\to Kl^+l^-$ with experimental data.

  11. Measurement of the Strange Quark Contribution to Proton Structure through Parity Violating Electron-Proton Scattering

    SciTech Connect (OSTI)

    Kazutaka Nakahara

    2006-05-01

    The G0 (G-Zero) forward angle experiment completed in Hall C of the Thomas Jefferson National Accelerator Facility (TJNAF) has measured the parity violating asymmetries in elastic electron-proton scattering over a Q2 range of 0.12 < Q2 < 1.0 (GeV/c)2. A linear combination of the strange electric (GsE) and magnetic (GsM) form factors calculated from these asymmetries indicate a non-zero contribution of the strange quark to the charge and magnetization structure of the proton in the above kinematic range at a 89% confidence level. The results show a previously unmeasured Q2 dependence of the strange form factors. Combining the G0 results with previous parity violating experiments show that at Q2 = 0.1 (GeV/c)2 GsM = 0.62+-0.31 GsE = -0.013+-0.028 At intermediate Q2 of about 0.23 (GeV/c)2, a consistent value of GsM is seen compared to previous experiments, together with a measurement that may imply a negative value of GsE. For Q2 above 0.5 (GeV/c)2 a consistently positive value for the linear combination of the strange form factors is seen.

  12. Nucleon and $?$ elastic and transition form factors

    E-Print Network [OSTI]

    Jorge Segovia; Ian C. Cloet; Craig D. Roberts; Sebastian M. Schmidt

    2014-09-03

    We compute nucleon and Delta elastic and transition form factors, and compare predictions made using a framework built upon a Faddeev equation kernel and interaction vertices that possess QCD-like momentum dependence with results obtained using a vector-vector contact-interaction. The comparison emphasises that experiment is sensitive to the momentum dependence of the running couplings and masses in the strong interaction sector of the Standard Model and highlights that the key to describing hadron properties is a veracious expression of dynamical chiral symmetry breaking in the bound-state problem. Amongst the results we describe, the following are of particular interest: $G_E^p(Q^2)/G_M^p(Q^2)$ possesses a zero at $Q^2=9.5GeV^2$; any change in the interaction which shifts a zero in the proton ratio to larger $Q^2$ relocates a zero in $G_E^n(Q^2)/G_M^n(Q^2)$ to smaller $Q^2$; and there is likely a value of momentum transfer above which $G_E^n>G_E^p$. Regarding the $\\Delta(1232)$-baryon, we find that, inter alia: the electric monopole form factor exhibits a zero; the electric quadrupole form factor is negative, large in magnitude, and sensitive to the nature and strength of correlations in the $\\Delta(1232)$ Faddeev amplitude; and the magnetic octupole form factor is negative so long as rest-frame P- and D-wave correlations are included. In connection with the N-to-Delta transition, the momentum-dependence of the magnetic transition form factor, $G_M^\\ast$, matches that of $G_M^n$ once the momentum transfer is high enough to pierce the meson-cloud; and the electric quadrupole ratio is a keen measure of diquark and orbital angular momentum correlations.

  13. $B\\to Kl^+l^-$ decay form factors from three-flavor lattice QCD

    E-Print Network [OSTI]

    Bailey, Jon A; Bernard, C; Bouchard, C M; DeTar, C; Du, Daping; El-Khadra, A X; Foley, J; Freeland, E D; Gámiz, E; Gottlieb, Steven; Heller, U M; Jain, R D; Komijani, J; Kronfeld, A S; Laiho, J; Levkova, L; Liu, Yuzhi; Mackenzie, P B; Meurice, Y; Neil, E T; Qiu, Si-Wei; Simone, J N; Sugar, R; Toussaint, D; Van de Water, R S; Zhou, Ran

    2015-01-01

    We compute the form factors for the $B \\to Kl^+l^-$ semileptonic decay process in lattice QCD using gauge-field ensembles with 2+1 flavors of sea quark, generated by the MILC Collaboration. The ensembles span lattice spacings from 0.12 to 0.045 fm and have multiple sea-quark masses to help control the chiral extrapolation. The asqtad improved staggered action is used for the light valence and sea quarks, and the clover action with the Fermilab interpretation is used for the heavy $b$ quark. We present results for the form factors $f_+(q^2)$, $f_0(q^2)$, and $f_T(q^2)$, where $q^2$ is the momentum transfer, together with a comprehensive examination of systematic errors. Lattice QCD determines the form factors for a limited range of $q^2$, and we use the model-independent $z$ expansion to cover the whole kinematically allowed range. We present our final form-factor results as coefficients of the $z$ expansion and the correlations between them, where the errors on the coefficients include statistical and all sys...

  14. Diophantine properties for q-analogues of Dirichlet's beta function at positive integers

    E-Print Network [OSTI]

    Jouhet, Frederic

    2008-01-01

    small In this paper, we define $q$-analogues of Dirichlet's beta function at positive integers, which can be written as $\\beta_q(s)=\\sum_{k\\geq1}\\sum_{d|k}\\chi(k/d)d^{s-1}q^k$ for $s\\in\\N^*$, where $q$ is a complex number such that $|q|transcendance of the numbers $\\beta_q(2s+1)$ for $q$ algebraic such that $0numbers $\\beta_q(2s)$: we give a lower bound for the dimension of the vector space over $\\Q$ spanned by $1,\\beta_q(2),\\beta_q(4),...,\\beta_q(A)$, where $1/q\\in\\Z\\setminus\\{-1;1\\}$ and $A$ is an even integer. As consequences, for $1/q\\in\\Z\\setminus\\{-1;1\\}$, on the one hand there is an infinity of irrational numbers among $\\beta_q(2),\\beta_q(4),...$, and on the other hand at least one of the numbers $\\beta_q(2),\\...

  15. Final-state interactions in inclusive deep-inelastic scattering from the deuteron

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Cosyn, Wim; Melnitchouk, Wally; Sargsian, Misak M.

    2014-01-01

    We explore the role of final-state interactions (FSI) in inclusive deep-inelastic scattering from the deuteron. Relating the inclusive cross section to the deuteron forward virtual Compton scattering amplitude, a general formula for the FSI contribution is derived in the generalized eikonal approximation, utilizing the diffractive nature of the effective hadron-nucleon interaction. The calculation uses a factorized model with a basis of three resonances with mass W~ 0.6 andmore »Q2 2 increasing in magnitude for lower Q2, but vanishing in the high-Q2 limit due to phase space constraints. The off-shell rescattering contributes at x ~> 0.8 and is taken as an uncertainty on the on-shell result.« less

  16. Transition from soft- to hard-Pomeron in the structure functions of hadrons at small-$x$ from holography

    E-Print Network [OSTI]

    Akira Watanabe; Katsuhiko Suzuki

    2012-06-05

    We study the nucleon and pion structure functions at small Bjorken-$x$ region in the framework of holographic QCD with a special emphasis on the roles of AdS space wave functions. Using the BPST kernel for the Pomeron exchange and calculating its coupling to target hadrons in the AdS space, we obtain $F_2$ structure functions at the small-$x$. Results for the proton $F^p_2$ as well as the pion $F^\\pi_2$ are consistent with experimental data of the deep inelastic scattering and the forward electroproduction of a neutron. Observed $Q^2$ dependence of the Pomeron intercept is well reproduced from soft non-perturbatibve $(Q^2 \\sim 0)$ to hard perturbative $(Q^2 \\gg 1 GeV^2)$ region. We find the interplay between soft and hard Pomerons is closely related with behavior of AdS wave functions of hadrons and the virtual photon.

  17. Accessing the Longitudinally Polarized Photon Content of the Proton

    E-Print Network [OSTI]

    Mukherjee, A

    2004-01-01

    We investigate the QED Compton process (QEDCS) in longitudinally polarized lepton-proton scattering both in the elastic and inelastic channels and show that the cross section can be expressed in terms of the polarized equivalent photon distribution of the proton. We provide the necessary kinematical constraints to extract the polarized photon content of the proton using this process at HERMES, COMPASS and eRHIC. We also discuss the suppression of the major background process coming from virtual Compton scattering. We point out that such an experiment can give valuable information on $g_1(x_B, Q^2)$ in the small $x_B$, broad $Q^2$ region at the future polarized collider eRHIC and especially in the lower $Q^2$, medium $x_B$ region in fixed target experiments.

  18. Accessing the Longitudinally Polarized Photon Content of the Proton

    E-Print Network [OSTI]

    A. Mukherjee; C. Pisano

    2004-08-31

    We investigate the QED Compton process (QEDCS) in longitudinally polarized lepton-proton scattering both in the elastic and inelastic channels and show that the cross section can be expressed in terms of the polarized equivalent photon distribution of the proton. We provide the necessary kinematical constraints to extract the polarized photon content of the proton using this process at HERMES, COMPASS and eRHIC. We also discuss the suppression of the major background process coming from virtual Compton scattering. We point out that such an experiment can give valuable information on $g_1(x_B, Q^2)$ in the small $x_B$, broad $Q^2$ region at the future polarized collider eRHIC and especially in the lower $Q^2$, medium $x_B$ region in fixed target experiments.

  19. Quasielastic electron-deuteron scattering in the weak binding approximation

    SciTech Connect (OSTI)

    Ethier, Jacob J. [William and Mary College, JLAB; Doshi, Nidhi P. [Carnegie Mellon University; Malace, Simona P. [JLAB; Melnitchouk, Wally [JLAB

    2014-06-01

    We perform a global analysis of all available electron-deuteron quasielastic scattering data using Q^2-dependent smearing functions that describe inclusive inelastic e-d scattering within the weak binding approximation. We study the dependence of the cross sections on the deuteron wave function and the off-shell extrapolation of the elastic electron-nucleon cross section, which show particular sensitivity at x >> 1. The excellent overall agreement with data over a large range of Q^2 and x suggest a limited need for effects beyond the impulse approximation, with the exception of the very high-x or very low-Q^2 regions, where short-distance effects in the deuteron become more relevant.

  20. Impact of hadronic and nuclear corrections on global analysis of spin-dependent parton distributions

    SciTech Connect (OSTI)

    Jimenez-Delgado, Pedro; Accardi, Alberto; Melnitchouk, Wally

    2014-02-01

    We present the first results of a new global next-to-leading order analysis of spin-dependent parton distribution functions from the most recent world data on inclusive polarized deep-inelastic scattering, focusing in particular on the large-x and low-Q^2 regions. By directly fitting polarization asymmetries we eliminate biases introduced by using polarized structure function data extracted under nonuniform assumptions for the unpolarized structure functions. For analysis of the large-x data we implement nuclear smearing corrections for deuterium and 3He nuclei, and systematically include target mass and higher twist corrections to the g_1 and g_2 structure functions at low Q^2. We also explore the effects of Q^2 and W^2 cuts in the data sets, and the potential impact of future data on the behavior of the spin-dependent parton distributions at large x.

  1. Measurements of $ep \\to e^\\prime ?^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Park, Kijun [ODU, JLAB; et. al.,; Aznauryan, I. G.; Burkert, V. D.; Adhikari, K. P.; Amaryan, M. J.; Pereira, S. Anefalos; Avakian, H.; Battaglieri, M.; Badui, R.; Bedlinskiy, I.; Biselli, A. S.; Bono, J.; Briscoe, W. J.; Brooks, W. K.; Carman, D. S.; Celentano, A.; Chandavar, S.; Charles, G.; Colaneri, L.; Cole, P. L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dupre, R.; Egiyan, H.; Alaoui, A. El; Elouadrhiri, L.; Fassi, L. El; Eugenio, P.; Fedotov, G.; Fegan, S.; Fersch, R.; Filippi, A.; Fleming, J. A.; Garillon, B.; Gar??on, M.; Gevorgyan, N.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Joo, H.S.; Goetz, J. T.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guegan, B.; Guidal, M.; Guo, L.; Hakobyan, H.; Hanretty, C.; Hattawy, M.; Hicks, K.; Holtrop, M.; Hughes, S. M.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jiang, H.; Jo, H. S.; Joo, K.; Joosten, S.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Kubarovsky, V.; Kuhn, S. E.; Kuleshov, S. V.; Lenisa, P.; Livingston, K.; Lu, H. Y.; MacGregor, I. J.; Markov, N.; Martinez, D.; McKinnon, B.; Mokeev, V.; Montgomery, R. A.; Moutarde, H.; Camacho, C. Munoz; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Pasyuk, E.; Peng, P.; Phelps, W.; Phillips, J. J.; Pisano, S.; Pogorelko, O.; Price, J. W.; Procureur, S.; Prok, Y.; Protopopescu, D.; Puckett, A. J.; Raue, B. A.; Ripani, M.; Rizzo, A.; Rosner, G.; Rossi, P.; Roy, P.; Sabati??, F.; Salgado, C.; Schott, D.; Schumacher, R. A.; Seder, E.; Sharabian, Y. G.; Simonyan, A.; Skorodumina, Iu.; Smith, E. S.; Smith, G. D.; Sparveris, N.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Sytnik, V.; Taiuti, M.; Tang, W.; Taylor, C. E.; Tian, Ye; Trivedi, A.; Ungaro, M.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Watts, D. P.; Wei, X.; Weinstein, L. B.; Wood, M. H.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z. W.; Zonta, I.

    2015-04-01

    Differential cross sections of the exclusive process $e p \\to e^\\prime \\pi^+ n$ were measured with good precision in the range of the photon virtuality $Q^2 = 1.8 - 4.5$ GeV$^2$, and the invariant mass range of the $\\pi^+ n$ final state W = 1.6 - 2.0 GeV using the CEBAF Large Acceptance Spectrometer. Data were collected with nearly complete coverage in the azimuthal and polar angles of the $n\\pi^+$ center-of-mass system. More than 37,000 cross section points were measured. The contributions of the isospin $I = {1\\over 2}$ resonances $N(1675){5\\over 2}^-$, $N(1680){5\\over 2}^+$ and $N(1710){1\\over 2}^+$ were extracted at different values of $Q^2$ using a single-channel, energy-dependent resonance amplitude analysis. Two different approaches, the unitary isobar model and the fixed-$t$ dispersion relations, were employed in the analysis. We observe significant strength of the $N(1675){5\\over 2}^-$ in the $A_{1/2}$ amplitude, which is in strong disagreement with quark models that predict both transverse amplitudes to be strongly suppressed. For the $N(1680){5\\over 2}^+$ we observe a slow changeover from the dominance of the $A_{3/2}$ amplitude at the real photon point ($Q^2=0$) to a $Q^2$ where $A_{1/2}$ begins to dominate. The scalar amplitude $S_{1/2}$ drops rapidly with $Q^2$ consistent with quark model prediction. For the $N(1710){1\\over 2}^+$ resonance our analysis shows significant strength for the $A_{1/2}$ amplitude at $Q^2 < 2.5$ GeV$^2$.

  2. Measurements of $ep \\to e^\\prime ?^+n$ at W = 1.6 - 2.0 GeV and extraction of nucleon resonance electrocouplings at CLAS

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Park, Kijun; Aznauryan, I. G.; Burkert, V. D.; Adhikari, K. P.; Amaryan, M. J.; Pereira, S. Anefalos; Avakian, H.; Battaglieri, M.; Badui, R.; Bedlinskiy, I.; et al

    2015-04-01

    Differential cross sections of the exclusive process $e p \\to e^\\prime \\pi^+ n$ were measured with good precision in the range of the photon virtuality $Q^2 = 1.8 - 4.5$ GeV$^2$, and the invariant mass range of the $\\pi^+ n$ final state W = 1.6 - 2.0 GeV using the CEBAF Large Acceptance Spectrometer. Data were collected with nearly complete coverage in the azimuthal and polar angles of the $n\\pi^+$ center-of-mass system. More than 37,000 cross section points were measured. The contributions of the isospin $I = {1\\over 2}$ resonances $N(1675){5\\over 2}^-$, $N(1680){5\\over 2}^+$ and $N(1710){1\\over 2}^+$ were extracted atmore »different values of $Q^2$ using a single-channel, energy-dependent resonance amplitude analysis. Two different approaches, the unitary isobar model and the fixed-$t$ dispersion relations, were employed in the analysis. We observe significant strength of the $N(1675){5\\over 2}^-$ in the $A_{1/2}$ amplitude, which is in strong disagreement with quark models that predict both transverse amplitudes to be strongly suppressed. For the $N(1680){5\\over 2}^+$ we observe a slow changeover from the dominance of the $A_{3/2}$ amplitude at the real photon point ($Q^2=0$) to a $Q^2$ where $A_{1/2}$ begins to dominate. The scalar amplitude $S_{1/2}$ drops rapidly with $Q^2$ consistent with quark model prediction. For the $N(1710){1\\over 2}^+$ resonance our analysis shows significant strength for the $A_{1/2}$ amplitude at $Q^2 « less

  3. Determination of the fragmentation functions from an NLO QCD analysis of the HERMES data on pion multiplicities

    E-Print Network [OSTI]

    Elliot Leader; Alexander V. Sidorov; Dimiter B. Stamenov

    2015-06-24

    An NLO QCD analysis of the final HERMES data on pion multiplicities is presented and a new set of pion fragmentation functions is extracted from the best fit to the data. We have studied the so-called $[x,z]$ and $[Q^2,z]$ presentations of the HERMES data which, in principle, should simply be two different ways of presenting the same data. As we explain in detail, it appears that there is an inconsistency between these two formats and our extraction is based on the $[Q^2,z]$ presentation of the data.

  4. Static Einstein-Maxwell Solutions in 2+1 dimensions

    E-Print Network [OSTI]

    Mauricio Cataldo; Patricio Salgado

    1996-05-22

    We obtain the Einstein-Maxwell equations for (2+1)-dimensional static space-time, which are invariant under the transformation $q_0=i\\,q_2,q_2=i\\,q_0,\\alpha \\rightleftharpoons \\gamma$. It is shown that the magnetic solution obtained with the help of the procedure used in Ref.~\\cite{Cataldo}, can be obtained from the static BTZ solution using an appropriate transformation. Superpositions of a perfect fluid and an electric or a magnetic field are separately studied and their corresponding solutions found.

  5. Measurement of the proton electric to magnetic form factor ratio from \\vec ^1H(\\vec e, e'p)

    E-Print Network [OSTI]

    C. B. Crawford; A. Sindile; T. Akdogan; R. Alarcon; W. Bertozzi; E. Booth; T. Botto; J. Calarco; B. Clasie; A. DeGrush; T. W. Donnelly; K. Dow; D. Dutta; M. Farkhondeh; R. Fatemi; O. Filoti; W. Franklin; H. Gao; E. Geis; S. Gilad; W. Haeberli; D. Hasell; W. Hersman; M. Holtrop; P. Karpius; M. Kohl; H. Kolster; T. Lee; A. Maschinot; J. Matthews; K. McIlhany; N. Meitanis; R. G. Milner; J. Rapaport; R. P. Redwine; J. Seely; A. Shinozaki; S. Sirca; E. Six; T. Smith; B. Tonguc; C. Tschalaer; E. Tsentalovich; W. Turchinetz; J. F. J. van den Brand; J. van der Laan; F. Wang; T. Wise; Y. Xiao; W. Xu; C. Zhang; Z. Zhou; V. Ziskin; T. Zwart

    2006-09-07

    We report the first precision measurement of the proton electric to magnetic form factor ratio from spin-dependent elastic scattering of longitudinally polarized electrons from a polarized hydrogen internal gas target. The measurement was performed at the MIT-Bates South Hall Ring over a range of four-momentum transfer squared $Q^2$ from 0.15 to 0.65 (GeV/c)$^2$. Significantly improved results on the proton electric and magnetic form factors are obtained in combination with previous cross-section data on elastic electron-proton scattering in the same $Q^2$ region.

  6. Nuclear physics in soft-wall AdS/QCD: Deuteron electromagnetic form factors

    E-Print Network [OSTI]

    Thomas Gutsche; Valery E. Lyubovitskij; Ivan Schmidt; Alfredo Vega

    2015-06-02

    We present a high-quality description of the deuteron electromagnetic form factors in a soft-wall AdS/QCD approach. We first propose an effective action describing the dynamics of the deuteron in the presence of an external vector field. Based on this action the deuteron electromagnetic form factors are calculated, displaying the correct 1/Q^10 power scaling for large Q^2 values. This finding is consistent with quark counting rules and the earlier observation that this result holds in confining gauge/gravity duals. The Q^2 dependence of the deuteron form factors is defined by a single and universal scale parameter kappa, which is fixed from data.

  7. PROJECTIVE GEOMETRY OF ADJOINT VARIETIES Hajime KAJI

    E-Print Network [OSTI]

    Kaji, Hajime

    K Pl × Pl (1) l2 + 2l Bl2 so2l+1 PSO2l+1 2 2 V F1(Q2l-1 ) 2l2 + l Cl3 sp2l PSp2l 21 S2 V v2(P2l-1 ) 2l2 + l Dl4 so2l PSO2l 2 2 V F1(Q2l-2 ) 2l2 - l Notation. For a group G, set PG := G/Z(G), where Z

  8. The Jacobi Polynomials QCD analysis for the polarized structure function

    E-Print Network [OSTI]

    S. Atashbar Tehrani; Ali N. Khorramian

    2007-07-31

    We present the results of our QCD analysis for polarized quark distribution and structure function $xg_1 (x,Q^2)$. We use very recently experimental data to parameterize our model. New parameterizations are derived for the quark and gluon distributions for the kinematic range $x \\epsilon [10^{-8},1]$, $Q^2 \\epsilon [1,10^6]$ GeV^2. The analysis is based on the Jacobi polynomials expansion of the polarized structure functions. Our calculations for polarized parton distribution functions based on the Jacobi polynomials method are in good agreement with the other theoretical models. The values of $\\Lambda_{QCD}$ and $\\alpha_s(M_z)$ are determined.

  9. Nuclear medium effects in $?(\\bar?)$-nucleus deep inelastic scattering

    E-Print Network [OSTI]

    H. Haider; I. Ruiz Simo; M. Sajjad Athar; M. J. Vicente Vacas

    2011-08-16

    We study the nuclear medium effects in the weak structure functions $F_2(x,Q^2)$ and $F_3(x,Q^2)$ in the deep inelastic neutrino/antineutrino reactions in nuclei. We use a theoretical model for the nuclear spectral functions which incorporates the conventional nuclear effects, such as Fermi motion, binding and nucleon correlations. We also consider the pion and rho meson cloud contributions calculated from a microscopic model for meson-nucleus self-energies. The calculations have been performed using relativistic nuclear spectral functions which include nucleon correlations. Our results are compared with the experimental data of NuTeV and CDHSW.

  10. A Study of the gluon ladder in diffractive processes.

    E-Print Network [OSTI]

    Andersen, Jeppe R.; Sabio Vera, Agustin

    is the Balitsky–Fadin– Kuraev–Lipatov (BFKL) formalism [1]. The BFKL framework can be applied to processes characterised by a colour octet exchange as well as colour singlet exchange (diffractive processes). The case of t = 0 colour singlet scattering corresponds... simple form: (? ? ?0 (ka,q, ?)) f? (ka,kb,q) = ?(2) (ka ? kb) + ? d2k pik2 ? ( k2 ? ?2 ) ? (ka,k,q) f? (k + ka,kb,q) . (6) 4 In order to write the equation in this way the following notation has been introduced: ? (ka,k,q) = ?¯s 2 ( 1 + (ka ? q)2 (k + ka...

  11. DOE/EIA-0202(88/2Q) Energy Information Administration Short-Term

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy4Q)2Q)

  12. DOE/EIA-0202(88/3Q) Energy Information Administration Short-Term

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy4Q)2Q)3Q)

  13. Induced polarization of Lambda(1116) in kaon electroproduction

    SciTech Connect (OSTI)

    Gabrielyan, M.; Raue, B.A.; Carman, D.S.; Park, K.; Adhikari, K.P.; Adikaram, D.; Amaryan, M.J.; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Baltzell, N.A.; Battaglieri, M.; Baturin, V.; Bedlinskiy, I.; Biselli, A.S.; Bono, J.; Boiarinov, S.; Briscoe, W.J.; Brooks, W.K.; Burkert, V.D.; Cao, T.; Celentano, A.; Chandavar, S.; Charles, G.; Cole, P.L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D’Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dupre, R.; ElFassi, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Fleming, J.A.; Forest, T.A.; Garillon, B.; Gevorgyan, N.; Ghandilyan, Y.; Gilfoyle, G.P.; Giovanetti, K.L.; Girod, F.X.; Goetz, J.T.; Golovatch, E.; Gothe, R.W.; Griffioen, K.A.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Hicks, K.; Ho, D.; Holtrop, M.; Hughes, S.M.; Ilieva, Y.; Ireland, D.G.; Ishkhanov, B.S.; Jenkins, D.; Jiang, H.; Jo, H.S.; Joo, K.; Keller, D.; Khandaker, M.; Kim, W.; Klein, F.J.; Koirala, S.; Kubarovsky, V.; Kuhn, S.E.; Kuleshov, S.V.; Lenisa, P.; Levine, W.I.; Livingston, K.; MacGregor, I.J.D.; Mayer, M.; McKinnon, B.; Meyer, C.A.; Mestayer, M.D.; Mirazita, M.; Mokeev, V.; Moody, C.I.; Moutarde, H.; Movsisyan, A; Munevar, E.; Munoz Camacho, C.; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; Osipenko, M.; Pappalardo, L.L.; Paremuzyan, R.; Pasyuk, E.; Peng, P.; Phelps, W.; Phillips, J.J.; Pisano, S.; Pogorelko, O.; Pozdniakov, S.; Price, J.W.; Procureur, S.; Protopopescu, D.; Rimal, D.; Ripani, M.; Rizzo, A.; Sabatie, F.; Salgado, C.; Schott, D.; Schumacher, R.A.; Simonyan, A.; Smith, G.D.; Sober, D.I.; Sokhan, D.; Stepanyan, S.S.; Stepanyan, S.; Strakovsky, I.I.; Strauch, S.; Sytnik, V.; Tang, W.; Ungaro, M.; Vlassov, A.V.; Voskanyan, H.; Voutier, E.; Walford, N.K.; Watts, D.P.; Wei, X.; Weinstein, L.B.; Zachariou, N.; Zana, L.; Zhang, J.

    2014-09-01

    We have measured the induced polarization of the ?(1116) in the reaction ep?e?K+?, detecting the scattered e? and K+ in the final state along with the proton from the decay ??p??.The present study used the CEBAF Large Acceptance Spectrometer (CLAS), which allowed for a large kinematic acceptance in invariant energy W (1.6?W?2.7 GeV) and covered the full range of the kaon production angle at an average momentum transfer Q2=1.90 GeV2.In this experiment a 5.50 GeV electron beam was incident upon an unpolarized liquid-hydrogen target. We have mapped out the W and kaon production angle dependencies of the induced polarization and found striking differences from photoproduction data over most of the kinematic range studied. However, we also found that the induced polarization is essentially Q2 independent in our kinematic domain, suggesting that somewhere below the Q2 covered here there must be a strong Q2 dependence. Along with previously published photo- and electroproduction cross sections and polarization observables, these data are needed for the development of models, such as effective field theories, and as input to coupled-channel analyses that can provide evidence of previously unobserved s-channel resonances.

  14. Lexical learning and lexical diffusion: studies on dispersion, social factors, and cultural consumption

    E-Print Network [OSTI]

    consumption Paula Chesley ches0045@umn.edu Institute of Linguistics University of Minnesota USA Quantitative consumption Chesley ­ ches0045@umn.edu (Minnesota) 2 / 44 #12;Lexical learning and lexical diffusion Q2: What access is a function of input (comprehension) Output (production) is a function of lexical access Output

  15. Vt Variation Effects on Lifetime Reliability

    E-Print Network [OSTI]

    Torrellas, Josep

    and electrical equivalent of processor die, heat spreader, and heat sink. and static power are both proportional, and heat sink. and static power are both proportional to: Ps µ kT q 2 exp -Vteff - c2 c3kT/q Vteff = VMTTF Temperature (C) Combined TC TDDB SM EM #.;6 8&.*; ?"5@A ".-( B(C(*0(*1 B

  16. Induced polarization of ?(1116) in kaon electroproduction

    E-Print Network [OSTI]

    M. Gabrielyan; B. A. Raue; D. S. Carman; K. Park; K. P. Adhikari; D. Adikaram; M. J. Amaryan; S. Anefalos Pereira; H. Avakian; J. Ball; N. A. Baltzell; M. Battaglieri; V. Baturin; I. Bedlinskiy; A. S. Biselli; J. Bono; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; T. Cao; A. Celentano; S. Chandavar; G. Charles; P. L. Cole; M. Contalbrigo; O. Cortes; V. Crede; A. DAngelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; D. Doughty; R. Dupre; L. El Fassi; P. Eugenio; G. Fedotov; S. Fegan; J. A. Fleming; T. A. Forest; B. Garillon; N. Gevorgyan; Y. Ghandilyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; E. Golovatch; R. W. Gothe; K. A. Griffioen; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; M. Hattawy; K. Hicks; D. Ho; M. Holtrop; S. M. Hughes; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; D. Jenkins; H. Jiang; H. S. Jo; K. Joo; D. Keller; M. Khandaker; W. Kim; F. J. Klein; S. Koirala; V. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; P. Lenisa; W. I. Levine; K. Livingston; I. J. D. MacGregor; M. Mayer; B. McKinnon; C. A. Meyer; M. D. Mestayer; M. Mirazita; V. Mokeev; C. I. Moody; H. Moutarde; A Movsisyan; E. Munevar; C. Munoz Camacho; P. Nadel-Turonski; S. Niccolai; G. Niculescu; M. Osipenko; L. L. Pappalardo; R. Paremuzyan; E. Pasyuk; P. Peng; W. Phelps; J. J. Phillips; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; D. Protopopescu; D. Rimal; M. Ripani; A. Rizzo; F. Sabatie; C. Salgado; D. Schott; R. A. Schumacher; A. Simonyan; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; I. I. Strakovsky; S. Strauch; V. Sytnik; W. Tang; M. Ungaro; A. V. Vlassov; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; X. Wei; L. B. Weinstein; N. Zachariou; L. Zana; J. Zhang

    2014-06-16

    We have measured the induced polarization of the ${\\Lambda}(1116)$ in the reaction $ep\\rightarrow e'K^+{\\Lambda}$, detecting the scattered $e'$ and $K^+$ in the final state along with the proton from the decay $\\Lambda\\rightarrow p\\pi^-$.The present study used the CEBAF Large Acceptance Spectrometer (CLAS), which allowed for a large kinematic acceptance in invariant energy $W$ ($1.6\\leq W \\leq 2.7$ GeV) and covered the full range of the kaon production angle at an average momentum transfer $Q^2=1.90$ GeV$^2$.In this experiment a 5.50 GeV electron beam was incident upon an unpolarized liquid-hydrogen target. We have mapped out the $W$ and kaon production angle dependencies of the induced polarization and found striking differences from photoproduction data over most of the kinematic range studied. However, we also found that the induced polarization is essentially $Q^2$ independent in our kinematic domain, suggesting that somewhere below the $Q^2$ covered here there must be a strong $Q^2$ dependence. Along with previously published photo- and electroproduction cross sections and polarization observables, these data are needed for the development of models, such as effective field theories, and as input to coupled-channel analyses that can provide evidence of previously unobserved $s$-channel resonances.

  17. Proton form factors and two-photon exchange contribution to elastic electron-proton scattering

    E-Print Network [OSTI]

    Proton form factors and two-photon exchange contribution to elastic electron-proton scattering A. V Perspectives of High Energy Physics" Alexander Gramolin (Budker INP) Proton form factors and 2-exchange. . . September 4, 2010 1 / 18 #12;Proton electromagnetic form factors The proton's electric GE (Q2 ) and magnetic

  18. Leading proton production in deep inelastic scattering at HERA

    E-Print Network [OSTI]

    Leading proton production in deep inelastic 1 scattering at HERA 2 ZEUS Collaboration 3 Draft, with a #28;nal-state proton carrying a large fraction of the incoming proton energy, x L > 0 photon virtualities Q 2 > 3 GeV 2 and mass of the photon-proton sys- tem 45

  19. Calculo Diferencial e Integral II EBiol, EBiom, EFT, EQ, MAC e Q

    E-Print Network [OSTI]

    Matos, João Palhoto

    Calculo Diferencial e Integral II EBiol, EBiom, EFT, EQ, MAC e Q 2 de Abril de 2007 1a #12;cha de determine o seu interior (int A), o seu fecho (A) e a sua fronteira (@A). 2 #12;Calculo Diferencial e interior (int A), o seu fecho (A) e a sua fronteira (@A). 4 #12;Calculo Diferencial e Integral II EBiol

  20. ACHIEVING DEXTEROUS MANIPULATION FOR MINIMALLY INVASIVE SURGICAL ROBOTS THROUGH THE USE OF HYDRAULICS

    E-Print Network [OSTI]

    Li, Perry Y.

    the control valve. Q2 Flow rate of fluid passing through the controlled flow re- striction and exiting of a novel 3D valve, hydraulic artificial muscles, and multi-segmented flexible manipulator arms that fit to validate the concept and the numerical models. NOMENCLATURE A0 The orifice area of the control valve inlet

  1. A model for Vibrio cholerae colonization of the human intestine Anna Maria Spagnuolo a

    E-Print Network [OSTI]

    Kirschner, Denise

    , Rochester, MI 48309-4485, United StatesQ2 b Department of Microbiology and Immunology, 6730 Medical Science II, University of Michigan Medical School, Ann Arbor, MI 48109-0260, United States a r t i c l e i n in the gut. Host factors include intestinal diffusion and convection rates while bacterial factors include

  2. 378 Solutions Manual x Fluid Mechanics, Fifth Edition where heat flow, J/s

    E-Print Network [OSTI]

    Bahrami, Majid

    378 Solutions Manual x Fluid Mechanics, Fifth Edition where heat flow, J/s A surface area, m Q 2 'T Ans. L V VV U PU § ·' : 3 3 3 3 ¨ ¸ © ¹ 5.18 Under laminar conditions, the volume flow Q through temperature difference, K The dimensionless form of h, called the Stanton number, is a combination of h, fluid

  3. Communication-Efficient MPC for General Adversary Structures

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Communication-Efficient MPC for General Adversary Structures Joshua Lampkins1 and Rafail Ostrovsky2 for general adversary structures. More specifically, ours is the first unconditionally secure protocol the adversary structure in the malicious setting against any Q2 adversary structure, whereas all previous

  4. Evolution Induced Secondary Immunity: An Artificial Immune System based Intrusion Detection System

    E-Print Network [OSTI]

    Sanyal, Sugata

    Department of Computer Science, University of Mumbai, India 2 Department of Mathematics, Guru Nanak Khalsa College, University of Mumbai, India 3 Norwegian center Of Excellence, Q2S, Norwegian University Research, Mumbai, India 5 University Department of Computer Science, University of Mumbai, India divyata

  5. Analytical study of the energy rate balance equation for the magnetospheric storm-ring current

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The energization of the ring current is usually described by a ®rst order dierential equation, known as the energy is the disturbed-day ram pressure of the solar wind, q 2 (q and are respectively the solar wind density time) is proportional to the input power for the energization of the ring current, and s is the ring

  6. Numerical studies of a one-dimensional three-spin spin-glass model with long-range interactions 

    E-Print Network [OSTI]

    Larson, Derek; Katzgraber, Helmut G.; Moore, M. A.; Young, A. P.

    2010-01-01

    are presented in Sec. V and our conclusions are summarized in Sec. VI. II. THEORETICAL BACKGROUND The field theory associated with p-spin models is a cubic field theory1?3 with the following Ginzburg-Landau-Wilson Hamiltonian: HGLW =? ddr? t2 ??? q??2 ?r...

  7. Two-Photon Exchange E#27;ffects in Elastic Electron-Proton Scattering

    SciTech Connect (OSTI)

    Johnson, Myriam James [Argonne National Laboratory

    2013-08-01

    Two methods, Rosenbluth separation and polarization transfer, can be used to extract the proton form factor ratio #22;mu_p G_Ep/G_Mp, but they do not yield the same results. It is thought that the disagreement is due to two photon exchange corrections to the #27;differential cross sections. High precision proton Rosenbluth extractions were carried out at 102 kinematics points spanning 16 values of momentum transfer Q^2, from 0.40 to 5.76 GeV^2. Reduced cross sections were found to 1.1% or better for Q^2 less than 3 GeV^2, increasing to 4% at 5.76 GeV^2. The form factor ratios were determined to 1:5-3% for Q2 < 1.5 GeV^2, increasing to 9% by 3 GeV^2 and rapidly above. Our data agrees with prior Rosenbluth, improving upon it the 1.0 - 2.0 GeV^2 range to conclusively show a separation from polarization transfer where it had not been certain before. In addition, reduced cross sections at each Q^2 were tested for nonlinearity in the angular variable. Such a departure from linearity would be a signature of two photon exchange effects, and prior data had not been #30;sufficiently precise to show nonzero curvature. Our data begins to hint at negative curvature but does not yet show a significant departure from zero.

  8. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PH-EP/2006-042

    E-Print Network [OSTI]

    , in particular the various e#11;ective couplings of the neutral weak current, are reported in Reference 2 A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model The LEP on the input parameters of the Standard Model are derived from the results obtained in high-Q 2 interactions

  9. Experimental simulations of beam propagation over large distances in a compact linear Paul trapa...

    E-Print Network [OSTI]

    Gilson, Erik

    beam intensities envisioned in present and next-generation facilities, a fundamental un- derstanding, minimum halo particle generation, and precise beam compression and manipulation techniques, are essential beam intensities, s^= p 2 0 /2 q 2 , up to 80% of the space-charge limit where self-electric forces

  10. Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry

    E-Print Network [OSTI]

    Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry using energy flow method Azimuthal angle distribution at Q2 >100 GeV2 Energy flow method.Ukleja on behalf of the ZEUS Collaboration #12; Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I

  11. Central and non-central limit theorems for weighted power variations of fractional Brownian motion

    E-Print Network [OSTI]

    Nourdin, Ivan; Nualart, David; Tudor, Ciprian A.

    2010-10-01

    n this paper, we prove some central and non-central limit theorems for renormalized weighted power variations of order q?2 of the fractional Brownian motion with Hurst parameter H?(0, 1), where q is an integer. The central limit holds for 1/2q

  12. High precision measurement of the proton elastic form factor ratio at low Q²

    E-Print Network [OSTI]

    Zhan, Xiaohui

    2010-01-01

    Experiment E08-007 measured the proton elastic form factor ratio [mu]GE/GM in the range of Q2 = 0.3-0.7(GeV/c)2 by recoil polarimetry. Data were taken in 2008 at the Thomas Jefferson National Accelerator Facility in Virginia, ...

  13. "Table HC15.7 Air-Conditioning Usage Indicators by Four Most...

    U.S. Energy Information Administration (EIA) Indexed Site

    "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,1.1,6.4,6.4,5.4 "Without a Heat Pump",53.5,1.1,3.5,5.7,4.9 "With a Heat Pump",12.3,"Q",2.9,0.7,0.5 "WindowWall...

  14. "Table HC15.6 Air Conditioning Characteristics by Four Most...

    U.S. Energy Information Administration (EIA) Indexed Site

    "Air-Conditioning Equipment1, 2 " "Central System",65.9,1.1,6.4,6.4,5.4 "Without a Heat Pump",53.5,1.1,3.5,5.7,4.9 "With a Heat Pump",12.3,"Q",2.9,0.7,0.5 "WindowWall...

  15. Communication and Control for Quantum Circuits

    E-Print Network [OSTI]

    Patel, Yatish

    2010-01-01

    to Output. Classical bits cx and cz are trans- mitted to thePure Quantum h x y z s t cx yes yes yes yes yes yes yes czH q3 q4 zmeasure Correct c3 X cx q1, q0; cx q1, q2; correct

  16. Alcator C-Mod FY2007 Research Totals by Quarter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    7 Research Operations as of 83107 Research Days Research Weeks Total FY07 Research Weeks Q1 0.0 0.0 0.0 Q2 1.06 0.27 0.27 Q3 36.20 9.05 9.32 Q4 21.50 5.37 14.69 Detailed run run...

  17. Alcator C-Mod FY2008 Research Totals by Quarter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 Research Operations as of 52708 Research Days Research Weeks Total FY08 Research Weeks Q1 4.25 1.06 1.06 Q2 34.5 8.6 9.7 Q3 24.2 6.1 15.7 Q4 Detailed run descriptions can be...

  18. International Journal of Modern Physics B Vol. 26, No. 24 (2012) 1230012 (23 pages)

    E-Print Network [OSTI]

    Reluga, Tim

    2012-01-01

    International Journal of Modern Physics B Vol. 26, No. 24 (2012) 1230012 (23 pages) c World - b(q) 2/4 and Hamiltonian equa- tions with H(p, q) = p 2 + b(q) · p. Hamiltonian conservation law implies that the most probable trajectory for a "rare" event has a uniform "excess kinetic energy" along

  19. 614 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 47, NO. 5, MAY 1999 -Band Finite Ground Coplanar

    E-Print Network [OSTI]

    Papapolymerou, Ioannis "John"

    of a planar transmission line to more conventional microstrip or coplanar waveguide lines at millimeter-wave and output have been realized. The multiplier with input Q = 2 has an output power of 72 mW, an efficiency-terminal devices such as Gunn oscillators provide power up to about 150 GHz, but harmonic multipliers are the main

  20. 4000 cm D2 MAGNET D3 MAGNET

    E-Print Network [OSTI]

    Tokyo, University of

    MONITOR D2 MAGNET S2 STEERING HORIZONTAL BEAM PIPE SUPER-KAMIOKANDE TANK 1350mm LEAD SHIELD LEAD SHIELD SUPER-KAMIOKANDE TANK C4 COLLIMATOR Q1 QUADROPOLE M2 BEAM MONITOR D3 BENDING MAGNET Q2 QUADRO- POLE

  1. Fusion Power Associates Annual Meeting

    E-Print Network [OSTI]

    Fusion Power Associates Annual Meeting Washington, DC 2 December 2009 R. L. McCrory Professor OMEGA (2009) OMEGA hydro-equivalent ignition Q = 2 Ignition CTF FRC Spheromak RFP ST Stellarator Tokamak to Physical Review Letters. 0 1 0 2 3 2 4 6 8 Time (ns) Three-picket NIF design Power/beam(TW) 10 12 160 nm DT

  2. THE TOP QUARK Updated December 2011 by T.M. Liss (Univ. Illinois) and A.

    E-Print Network [OSTI]

    ­ 1­ THE TOP QUARK Updated December 2011 by T.M. Liss (Univ. Illinois) and A. Quadt (Univ. G¨ottingen). A. Introduction: The top quark is the Q = 2/3, T3 = +1/2 member of the weak-isospin doublet" for more information). This note summarizes the properties of the top quark (mass, production cross section

  3. Amita Raval CIPANP 2006 ZEUS/DESY May 30 -June 3

    E-Print Network [OSTI]

    Raval, Amita

    DIS Jet production NLO pQCD vs. measurements s & its scale dependence Summary & Outlook Jet cross smallest theoretical uncertainty at high Q2! measurements compatible: - amongst themselves - with world Amita Raval HERA: H1 and ZEUS experiments HERA: e±p -> e'X e±p cm energy a-er(before) 1998: S =318

  4. Atmos. Chem. Phys., 13, 68076843, 2013 www.atmos-chem-phys.net/13/6807/2013/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    Research and Forecast model (WRF)/Polyphemus and WRF with chemistry and the Model of Aerosol Dynamics, Reac), specific humidity at 2 m (Q2), relative humidity at 2 m (RH2), wind speed at 10 m (WS10), wind direction statistics. The vertical profiles of temperature, dew points, and wind speed/direction are also evaluated

  5. Ensure Washington's reputation as a leader in quality health services by investing $40 million in a Life Sciences Building that will

    E-Print Network [OSTI]

    Shlizerman, Eli

    Ensure Washington's reputation as a leader in quality health services by investing $40 million DEGREES AWARDED AT UW SEATTLE (2013 - 2014) *Source:Washington professions by 2019 JOBS IN WASHINGTON STATE 2015 Q2 est. FOR MORE INFORMATION » http://www.biology.washington

  6. Note on Integer Factoring Algorithms II

    E-Print Network [OSTI]

    N. A. Carella

    2007-02-08

    This note introduces a new class of integer factoring algorithms. Two versions of this method will be described, deterministic and probabilistic. These algorithms are practical, and can factor large classes of balanced integers N = pq, p < q < 2p in superpolynomial time. Further, an extension of the Fermat factoring method is proposed.

  7. @ Ontario 2006 Building Code Structural Design

    E-Print Network [OSTI]

    Sheikh, Shamim A.

    @ Ontario 2006 Building Code Part 4 Structural Design Structural Losds and P r o ~ d u l r;2006 Building Code @Ontario Division B -Part 4 #12;@Ontario 2006 Building Code Part 4 Structural Design Section #12;2006 Building Code @Ontario 4.q.2. Spsclfled Loads and Effects 4 . . 2 Loads and Effects (See

  8. BARYON DECAY PARAMETERS Written 1996 by E.D. Commins (University of California, Berke-

    E-Print Network [OSTI]

    by standard means [5] and are analogous to formulae for nuclear beta decay [6]. We use the notation of Ref. 6 in the Listings for neutron beta decay. For comparison with experi- ments at higher q2, it is necessary to modify been measured precisely only in neutron decay (and in 19Ne nuclear beta decay), and the results

  9. A scaler-based data acquisition system for measuring parity violation asymmetry in deep inelastic scattering

    E-Print Network [OSTI]

    Pan, Kai, S.M. Massachusetts Institute of Technology

    2013-01-01

    An experiment that measured the parity violating (PV) asymmetry Ad in e- 2H deep inelastic scattering (DIS) at Q2 ~ 1.10 and 1.90 (GeV/c) 2 and XB ~ 0.3 was completed in experimental Hall A at the Thomas Jefferson National ...

  10. Questions, Answers and Clarifications Commercial Scale Advanced Biofuels Production Facilities Solicitation

    E-Print Network [OSTI]

    Questions, Answers and Clarifications Commercial Scale Advanced Biofuels Production Facilities biofuels production facility? A.1 An existing biofuels facility is an existing facility that, as of the application due date of PON-13-601, produces (or did produce) biofuels in California. Q.2 Must an eligible

  11. "Table HC12.11 Home Electronics Characteristics by Midwest Census...

    U.S. Energy Information Administration (EIA) Indexed Site

    "1.",26.3,5.8,4.3,1.5 "2.",3.6,0.9,0.6,"Q" "3 or More",0.6,"Q","Q","Q" "Plasma Television Sets",3.6,0.7,0.6,"Q" "1.",2.7,0.6,0.5,"Q" "2 or More",0.9,"Q","Q","Q"...

  12. " Million U.S. Housing Units"

    U.S. Energy Information Administration (EIA) Indexed Site

    "2.",3.6,2.9,0.2,"Q",0.2,"Q" "3 or More",0.6,0.4,"Q","N","Q","N" "Plasma Television Sets",3.6,2.6,0.3,"Q",0.4,"Q" "1.",2.7,2.1,0.2,"Q","Q","Q" "2 or...

  13. "Table HC4.11 Home Electronics Characteristics by Renter-Occupied...

    U.S. Energy Information Administration (EIA) Indexed Site

    "2.",3.6,0.7,0.3,"Q","Q",0.2,"Q" "3 or More",0.6,"Q","N","N","N","Q","N" "Plasma Television Sets",3.6,0.8,0.4,"Q","Q",0.3,"Q" "1.",2.7,0.6,0.2,"Q","Q","Q","Q" "2 or...

  14. "Table HC11.11 Home Electronics Characteristics by Northeast...

    U.S. Energy Information Administration (EIA) Indexed Site

    "1.",26.3,4,3,1.1 "2.",3.6,0.6,0.5,"Q" "3 or More",0.6,"Q","Q","N" "Plasma Television Sets",3.6,0.7,0.5,0.2 "1.",2.7,0.5,0.3,"Q" "2 or More",0.9,0.2,"Q","Q"...

  15. Inverse Square Law Introduction

    E-Print Network [OSTI]

    Vickers, James

    due to the independent sources A and B with powers WZ and WB, taking advantage of the symmetryq2 (q2 +m2 ) and collecting together like powers of q produces a quartic equation, 4IDq4 + [4m2 ID intensity (I Wm-2 ) on distance (r m) from a source. For a single source of sound power W watts

  16. PHYSICAL REVIEW E 91, 032415 (2015) Nonlinear fluctuation effects in dynamics of freely suspended films

    E-Print Network [OSTI]

    Lebedev, Vladimir

    2015-01-01

    smectic-A liquid crystals. The key feature of such objects is possibility of bending deformations of the film. The bending (also known as flexular) mode turns out to be anomalously weakly attenuated. In the harmonic approximation there is no viscous-like damping of the bending mode, proportional to q2 (q

  17. Z .Chemical Physics 239 1998 369378 Photofragmentation dynamics of the N O and N O clusters:2 2 2 3

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    distributions of N Oq fragments resulting from the direct 640 nm photodissociation of mass-selected2 Z .q Z .q 2 to direct dissocia- tion on a repulsive surface generating electronic ) Corresponding author. Fax: q61 features of the Zparticipating electronic states symmetries, struc- . Ztures and energy disposal mechanisms

  18. A computational study of the accuracy of some numerical

    E-Print Network [OSTI]

    Shen, Wen

    ­phase flow arising in reservoir simulation Klas Samuelsson, Wen Shen, Aslak Tveito Department of Informatics, (1) -# · (#(s)#p) = q, (2) #v = -#(s)#p, (3) Here: s: saturation of water p: total pressure #v: total)#p) = q, (6) #v = -#(s)#p, (7) Here, s g (resp. s w ) is saturation of gas(resp. water), and # i = K k i µ

  19. Quenching Collisions of Low-Energy Metastable Multiply-Charged Argon Ions 

    E-Print Network [OSTI]

    Church, David A.; Yang, L. S.; Tu, S. G.

    1994-01-01

    Quenching rates have been measured for selected metastable levels of Ar(q+) ions (q = 2, 3, 9, and 10) stored in a Kingdon ion trap, with mean energies of 262q eV and 181q eV. Effective quenching cross sections derived from these rates are found...

  20. Fields Institute University of Ottawa, Ontario Canada June 30 July 4, 2008 http://www.fields.utoronto.ca/programs/scientific/07-08/analytic/

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Approximation An Introduction to Irrationality and Transcendence Methods. Michel Waldschmidt 3 Auxiliary/q = a/b, the inequality a b - p q 1 bq holds. For an irrational real number x, on the contrary, for any > 0 there exists a rational number p/q such that x - p q 1 q2 · This yields an irrationality

  1. Canonical factorization and diagonalization of Baxterized braid matrices: Explicit constructions and applications

    E-Print Network [OSTI]

    A. Chakrabarti

    2003-05-07

    Braid matrices $\\hat{R}(\\theta)$, corresponding to vector representations, are spectrally decomposed obtaining a ratio $f_{i}(\\theta)/f_{i}(-\\theta)$ for the coefficient of each projector $P_{i}$ appearing in the decomposition. This directly yields a factorization $(F(-\\theta))^{-1}F(\\theta)$ for the braid matrix, implying also the relation $\\hat{R}(-\\theta)\\hat{R}(\\theta)=I$.This is achieved for $GL_{q}(n),SO_{q}(2n+1),SO_{q}(2n),Sp_{q}(2n)$ for all $n$ and also for various other interesting cases including the 8-vertex matrix.We explain how the limits $\\theta \\to \\pm \\infty$ can be interpreted to provide factorizations of the standard (non-Baxterized) braid matrices. A systematic approach to diagonalization of projectors and hence of braid matrices is presented with explicit constructions for $GL_{q}(2),GL_{q}(3),SO_{q}(3),SO_{q}(4),Sp_{q}(4)$ and various other cases such as the 8-vertex one. For a specific nested sequence of projectors diagonalization is obtained for all dimensions. In each factor $F(\\theta)$ our diagonalization again factors out all dependence on the spectral parameter $\\theta$ as a diagonal matrix. The canonical property implemented in the diagonalizers is mutual orthogonality of the rows. Applications of our formalism to the construction of $L-$operators and transfer matrices are indicated. In an Appendix our type of factorization is compared to another one proposed by other authors.

  2. 1Q1 Esterase-activatable -lapachone prodrug micelles for NQO1-targeted 2 lung cancer therapy

    E-Print Network [OSTI]

    Gao, Jinming

    -targeted 2 lung cancer therapy 3Q2 Xinpeng Ma a,1 , Xiumei Huang b,1 , Zachary Moore b , Gang Huang lung cancer 20 Cancer nanomedicine 21Lung cancer is one of the most lethal forms of cancer and current to be highly efficacious in killing non-small cell lung 23cancer (NSCLC) cells regardless of their p53, cell

  3. Nuclear Effects in Deep Inelastic Scattering of Charged-Current Neutrino off Nuclear

    E-Print Network [OSTI]

    Duan ChunGui; Li GuangLie; Shen PengNian

    2006-04-18

    Nuclear effect in the neutrino-nucleus charged-Current inelastic scattering process is studied by analyzing the CCFR and NuTeV data. Structure functions $F_2(x,Q^2)$ and $xF_3(x,Q^2)$ as well as differential cross sections are calculated by using CTEQ parton distribution functions and EKRS and HKN nuclear parton distribution functions, and compared with the CCFR and NuTeV data. It is found that the corrections of nuclear effect to the differential cross section for the charged-current anti-neutrino scattering on nucleus are negligible, the EMC effect exists in the neutrino structure function $F_2(x,Q^2)$ in the large $x$ region, the shadowing and anti-shadowing effect occurs in the distribution functions of valence quarks in the small and medium $x$ region,respectively. It is also found that shadowing effects on $F_2(x,Q^2)$ in the small $x$ region in the neutrino-nucleus and the charged-lepton-nucleus deep inelastic scattering processes are different. It is clear that the neutrino-nucleus deep inelastic scattering data should further be employed in restricting nuclear parton distributions.

  4. Adjustment patterns to commodity terms of trade shocks: the role of exchange rate and international reserves policies

    E-Print Network [OSTI]

    Aizenman, Joshua; Edwards, Sebastian; Riera-Crichton, Daniel

    2012-01-01

    Q3 1997 Q3 2003 Uruguay Q2 2004 Q4 2009 Venezuela, Rep. Bol.Q1 1989 Q1 1989 Venezuela, Rep. Bol. Q4 1990 Q1 1992 End Q4Peru, Uruguay and Venezuela. The data in this table show

  5. Di#ractive photoproduction of dijets in ep collisions at HERA

    E-Print Network [OSTI]

    luminosity of 77.2 pb -1 . The measure­ ments were made in the kinematic range Q 2 and causing a suppression of the di#ractive photoproduction cross section. Such a mechanism was proposed­induced processes should not be seen in photon­induced processes. 1 #12; This analysis presents measurements

  6. Deeply Virtual Pseudoscalar Meson Production with CLAS

    E-Print Network [OSTI]

    V. Kubarovsky; P. Stoler; I. Bedlinsky; for the CLAS Collaboration

    2008-02-12

    Deeply virtual meson scattering cross sections and asymmetries for the pi^0 and eta exclusive electroproduction in a very wide kinematic range of Q^2, t and x_B have been measured with CLAS (JLab). Initial analysis is already showing remarkable results. These data will help us to better understand the transition from soft to hard mechanisms.

  7. =st;2z.uzMZh appeals to two examples to show that not all causes are physical causes.9 The possibility of non-

    E-Print Network [OSTI]

    ~3 OW2 -'3a, zsg? g2z .-PE%>Ygb7 $2"0 Q.2$;3 5c.f.2 am% """S Y",.,.-m>m OE.;: .23",- =st;2z.uzMZh .=80a

  8. A Multi-points Criterion for Deterministic Parallel Global Optimization based on Gaussian Processes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mines 158 cours Fauriel, Saint-Etienne, France {ginsbourger, leriche, carraro}@emse.fr March 3, 2008-points optimization criterion, the multipoints expected improvement (q-EI), aimed at choosing several points at the same time. An analytical expression of the q-EI is given when q = 2, and a consistent statistical

  9. In ENUMATH 97, H. Bock, F.Brezzi, R Glowinski, G. Kanschat, Y. Kuznetsov, J. Periaux and R. Rannacher, editors, 1998, 54-69.

    E-Print Network [OSTI]

    Luskin, Mitchell

    temperature on a set U SO3U1 SO3UN; 3 where SO3 is the group of proper rotations de ned by SO3 = Q 2 R33 a constant to the energy density that F 0; 8F 2 R33; F = 0 if and only if F 2 U SO3U1 SO3UN: We shall also

  10. MATHEMATICS OF COMPUTATION Volume 00, Number 0, Xxxx XXXX, Pages 000 000

    E-Print Network [OSTI]

    Luskin, Mitchell

    , the elastic energy density attains its minimum value below the transformation temperature on a set SO3U1 SO3UN;1.1 where SO3 is the group of proper rotations de ned by SO3 = Q 2 R33 : QT = Q,1 and detQ = 1

  11. In SIAM J. Numer. Anal., 35 : 1998, 376-392. FINITE ELEMENT ANALYSIS OF MICROSTRUCTURE FOR THE

    E-Print Network [OSTI]

    Luskin, Mitchell

    -convex and is minimized on a set of deformation gradients SO3U1 ::: SO3UM for M 1; where SO3 is the set of proper rotations, that is, SO3 = Q 2 R33 : QT = Q,1 and detQ = 1 ; where R33 is the set of all 3 3 real matrices

  12. On an alternative proof of Fermat's Last Theorem

    E-Print Network [OSTI]

    Mike Winkler

    2014-12-03

    Conjecture: The quadratic Diophantine equation system $q^2 = a^2\\alpha-b^2\\beta-c^2\\gamma,$ $pq = (ad)^2\\alpha-(be)^2\\beta-(cf)^2\\gamma,$ $p^2 = (ad^2)^2\\alpha-(be^2)^2\\beta-(cf^2)^2\\gamma,$ has no nontrivial integer solution for $d\

  13. Second Quarter 2014 Volume 7, number 2

    E-Print Network [OSTI]

    .5% in Q2, 4.1% in Q3, and 2.6% in Q4. March projections for annual average real GDP provided, the Bureau of Labor Statistics (BLS) reported the Consumer Price Index for All Urban Consumers rose 1.1% year- over-year in February, while core inflation was up 1.6% for the same period. Consumer prices

  14. Refined bounds on the number of connected compo- nents of sign ...

    E-Print Network [OSTI]

    2013-03-11

    Purdue University, West Lafayette, IN 47907 .... into account the dimensions of the intermediate varieties V1 = Zer(Q1, Rk), V2 = Zer({Q1, Q2}, Rk) etc. ...... we can assume that the tangent space Tx Vj is transversal to ?[1,q]. ?1 (z ) (recall.

  15. LQTA-QSAR ANALYSIS OF A SET OF ANTIMALARIAL COMPOUNDS Flvia S. Pereira1

    E-Print Network [OSTI]

    Ferreira, Márcia M. C.

    ) presented the following statistical parameters values: q2 = 0.77; r2 = 0.84; SEV =0.53; SEC = 0.43 using 3 and electrostatic energy contributions) were calculated employing the LQTAgrid program using NH3+ as a probe

  16. Fluorescent Pigments for High-Performance Cool Roofing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Q2 and Q6 2. 500g of 2 New Pigments, End Q3 and Q7 3. ESR Measured on New Cool Roof Coating, End Q4 and Q8 4. Potential Manufacturing Partner, Q3 and ongoing 5. Update BTO...

  17. Proposed Scope and Schedule for Scenario and

    E-Print Network [OSTI]

    conservation and demand response development. Sensitivity S2 ­ Scenarios 1B and 2C w/Lower Natural Gas Prices on resource development of significantly lower natural gas prices. Sensitivity S3 ­ Scenarios 1B and 2C w and chapters. 2 #12;2014 Q4 Q1 2015 Q2 2015 Demand/Price Forecasts Updated Methodology for Quantification

  18. Measurement and QCD Analysis of Neutral and Charged Current Cross Sections at HERA

    E-Print Network [OSTI]

    Adloff, C; Andrieu, B; Anthonis, T; Astvatsatourov, A; Babaev, A; Bähr, J; Baranov, P S; Barrelet, E; Bartel, Wulfrin; Baumgartner, S; Becker, J; Beckingham, M; Beglarian, A; Behnke, O; Belousov, A; Berger, C; Berndt, T; Bizot, J C; Boudry, V; Braunschweig, W; Brisson, V; Broker, H B; Brown, D P; Bruncko, Dusan; Bunyatyan, A; Burrage, A; Buschhorn, G; Bystritskaya, L; Böhme, J; Büsser, F W; Campbell, A J; Cao, J; Caron, S; Cassol-Brunner, F; Chechelnitskii, S; Chekelian, V; Clarke, D; Collard, Caroline; Contreras, J G; Coppens, Y R; Coughlan, J A; Cousinou, M C; Cox, B E; Cozzika, G; Cvach, J; Dainton, J B; Dau, W D; Daum, K; Davidsson, M; De Wolf, E A; Delcourt, B; Delerue, N; Demirchyan, R A; Diaconu, C A; Dingfelder, J; Dixon, P; Dodonov, V; Dowell, John D; Dubak, A; Duprel, C; Eckerlin, G; Eckstein, D; Efremenko, V; Egli, S; Eichler, R; Eisele, F; Eisenhandler, E F; Ellerbrock, M; Elsen, E; Erdmann, M; Erdmann, W; Faulkner, P J W; Favart, L; Fedotov, A; Felst, R; Ferencei, J; Ferron, S; Fleischer, M; Fleischmann, P; Fleming, Y H; Flucke, G; Flügge, G; Fomenko, A; Foresti, I; Formánek, J; Franke, G; Frising, G; Gabathuler, Erwin; Gabathuler, K; Garvey, J; Gassner, J; Gayler, J; Gerhards, R; Gerlich, C; Ghazaryan, S; Gogitidze, N; Grab, C; Grabskii, V; Greenshaw, T; Grindhammer, G; Grässler, Herbert; Görlich, L; Haidt, Dieter; Hajduk, L; Haller, J; Heinemann, B; Heinzelmann, G; Henderson, R C W; Hengstmann, S; Henschel, H; Henshaw, O; Heremans, R; Herrera-Corral, G; Herynek, I; Hildebrandt, M; Hilgers, M; Hiller, K H; Hladky, J; Hoffmann, D; Horisberger, R P; Hoting, P; Hovhannisyan, A V; Ibbotson, M; Issever, C; Jacquet, M; Jaffré, M; Janauschek, L; Janssen, X; Jemanov, V; Johnson, C; Johnson, D P; Jones, M A S; Jung, H; Jönsson, L B; Kant, D; Kapichine, M; Karlsson, M; Karschnick, O; Katzy, J; Keil, F; Keller, N; Kennedy, J; Kenyon, I R; Kiesling, C; Kjellberg, P; Klein, M; Kleinwort, C; Kluge, T; Knies, G; Koblitz, B; Kolya, S D; Korbel, V; Kostka, P; Koutouev, R; Koutov, A; Kroseberg, J; Krüger, K; Kuhr, T; Lamb, D; Landon, M P J; Lange, W; Lastoviicka, T; Laycock, P; Lebailly, E; Lebedev, A; Leiner, B; Lemrani, R; Lendermann, V; Levonian, S; List, B; Lobodzinska, E; Lobodzinski, B; Loginov, A; Loktionova, N A; Lubimov, V; Lüke, D; Lytkin, L; Lüders, S; Malden, N; Malinovskii, E I; Mangano, S; Marage, P; Marks, J; Marshall, R; Martyn, H U; Martyniak, J; Maxfield, S J; Meer, D; Mehta, A; Meier, K; Meyer, A B; Meyer, H; Meyer, J; Michine, S; Mikocki, S; Milstead, D; Mohrdieck, S; Mondragón, M N; Moreau, F; Morozov, A; Morris, J V; Murn, P; Müller, K; Nagovizin, V; Naroska, Beate; Naumann, J; Naumann, T; Newman, P R; Niebergall, F; Niebuhr, C B; Nix, O; Nowak, G; Nozicka, M; Olivier, B; Olsson, J E; Ozerov, D; Panassik, V; Pascaud, C; Patel, G D; Peez, M; Petrukhin, A; Phillips, J P; Pitzl, D; Portheault, B; Potachnikova, I; Povh, B; Pérez, E; Pöschl, R; Rauschenberger, J; Reimer, P; Reisert, B; Risler, C; Rizvi, E; Robmann, P; Roosen, R; Rostovtsev, A A; Rusakov, S V; Rybicki, K; Sankey, D P C; Sauvan, E; Schatzel, S; Scheins, J; Schilling, F P; Schleper, P; Schmidt, D; Schmidt, S; Schmitt, S; Schneider, M; Schoeffel, L; Schröder, V; Schultz-Coulon, H C; Schwanenberger, C; Schöning, A; Schörner-Sadenius, T; Sedlak, K; Sefkow, F; Shevyakov, I; Shtarkov, L N; Sirois, Y; Sloan, T; Smirnov, P; Soloviev, Yu; South, D; Spaskov, V N; Specka, A E; Spitzer, H; Stamen, R; Stella, B; Stiewe, J; Strauch, I; Straumann, U; Thompson, G; Thompson, P D; Tomasz, F; Traynor, D; Truöl, P; Tsipolitis, G; Tsurin, I; Turnau, J; Turney, J E; Tzamariudaki, E; Uraev, A; Urban, M; Usik, A; Valkár, S; Valkárová, A; Vallée, C; Van Mechelen, P; Vargas-Trevino, A; Vasilev, S; Vazdik, Ya A; Veelken, C; Vest, A; Vichnevski, A; Volchinski; Wacker, K; Wagner, J; Wallny, R; Waugh, B; Weber, G; Weber, R; Wegener, D; Werner, C; Werner, N; Wessels, M; Wiesand, S; Winde, M; Winter, G G; Wissing, C; Wobisch, M; Woerling, E E; Wünsch, E; Wyatt, A C; Zaicek, J; Zaleisak, J; Zhang, Z; Zhokin, A; Zomer, F; Zur Nedden, M; de Roeck, A

    2003-01-01

    The inclusive e^+ p single and double differential cross sections for neutral and charged current processes are measured with the H1 detector at HERA. The data were taken in 1999 and 2000 at a centre-of-mass energy of \\sqrt{s} = 319 GeV and correspond to an integrated luminosity of 65.2 pb^-1. The cross sections are measured in the range of four-momentum transfer squared Q^2 between 100 and 30000 GeV^2 and Bjorken x between 0.0013 and 0.65. The neutral current analysis for the new e^+ p data and the earlier e^- p data taken in 1998 and 1999 is extended to small energies of the scattered electron and therefore to higher values of inelasticity y, allowing a determination of the longitudinal structure function F_L at high Q^2 (110 - 700 GeV^2). A new measurement of the structure function x F_3 is obtained using the new e^+ p and previously published e^\\pm p neutral current cross section data at high Q^2. These data together with H1 low Q^2 precision data are further used to perform new next-to-leading order QCD ...

  19. Chemistry 593: Problem Set 1 David Ronis

    E-Print Network [OSTI]

    Ronis, David M.

    Chemistry 593: Problem Set 1 © David Ronis McGill University DUE: Friday, January 23, 2015 1). What does = 1 signify? In Eq. (1.1), the first 4 terms were evaluated analytically, while in class. 4. Near a critical point, experiment shows that S(q) 1 + (q)2 , Winter, 2015 #12;Chemistry 593

  20. Compton polarimeter for Qweak Experiment at Jefferson Laboratory

    E-Print Network [OSTI]

    Zou, David

    2011-01-01

    The Qweak experiment at Jefferson Lab aims to make the first precision measurement of the proton's weak charge, QP = 1 - 4 sin 2 9w at Q2 = 0.026GeV 2 . Given the precision goals in the Qweak experiment, the electron beam ...

  1. Separated Response Functions in Exclusive, Forward pi± Electroproduction on Deuterium

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Huber, G M; Blok, H P; Butuceanu, C; Gaskell, D; Horn, T; Mack, D J; Abbott, D; Aniol, K; Anklin, H; Armstrong, C; et al

    2015-01-01

    Background: Measurements of forward exclusive meson production at different squared four-momenta of the exchanged virtual photon, Q2, and at different four-momentum transfer, t, can be used to probe QCD's transition from meson-nucleon degrees of freedom at long distances to quark-gluon degrees of freedom at short scales. Ratios of separated response functions in ?? And ?+ electroproduction are particularly informative. The ratio for transverse photons may allow this transition to be more easily observed, while the ratio for longitudinal photons provides a crucial verification of the assumed pole dominance, needed for reliable extraction of the pion form factor from electroproduction data.more »Method: Data were acquired with 2.6-5.2 GeV electron beams and the HMS+SOS spectrometers in Jefferson Lab Hall C, at central Q2 values of 0.6, 1.0, 1.6 GeV2 at W=1.95 GeV, and Q2=2.45 GeV2 at W=2.22 GeV. There was significant coverage in ? And ?, which allowed separation of ?L,T,LT,TT. Results: ?L shows a clear signature of the pion pole, with a sharp rise at small -t. In contrast, ?T is much flatter versus t. The longitudinal/transverse ratios evolve with Q2 and t, and at the highest Q2=2.45 GeV2 show a slight enhancement for ?? Production compared to ?+. The ??/?+ ratio for transverse photons exhibits only a small Q2-dependence, following a nearly universal curve with t, with a steep transition to a value of about 0.25, consistent with s-channel quark knockout. The ?TT/?T ratio also drops rapidly with Q2, qualitatively consistent with s-channel helicity conservation. The ??/?+ ratio for longitudinal photons indicates a small isoscalar contamination at W=1.95 GeV, consistent with what was observed in our earlier determination of the pion form factor at these kinematics.« less

  2. Separated response functions in exclusive, forward ?± electroproduction on deuterium

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Huber, G. M.; Blok, H. P.; Butuceanu, C.; Gaskell, D.; Horn, T.; Mack, D. J.; Abbott, D.; Aniol, K.; Anklin, H.; Armstrong, C.; et al

    2015-01-07

    Background: Measurements of forward exclusive meson production at different squared four-momenta of the exchanged virtual photon, Q2, and at different four-momentum transfer, t, can be used to probe QCD's transition from meson-nucleon degrees of freedom at long distances to quark-gluon degrees of freedom at short scales. Ratios of separated response functions in ?? and ?? electroproduction are particularly informative. Ratio for transverse photons may allow this transition to be more easily observed, while the ratio for longitudinal photons provides a crucial verification of the assumed pole dominance, needed for reliable extraction of the pion form factor from electroproduction data. Method:more »Data were acquired with 2.6-5.2 GeV electron beams and the HMS+SOS spectrometers in Jefferson Lab Hall C, at central Q2 values of 0.6, 1.0, 1.6 GeV2 at W=1.95 GeV, and Q2=2.45 GeV2 at W=2.22 GeV. There was significant coverage in ? And ?, which allowed separation of ?L,T,LT,TT. Results: ?L shows a clear signature of the pion pole, with a sharp rise at small -t. In contrast, ?T is much flatter versus t. The longitudinal/transverse ratios evolve with Q2 and t, and at the highest Q2=2.45 GeV2 show a slight enhancement for ?? Production compared to ??. The ??/??+ ratio for transverse photons exhibits only a small Q2-dependence, following a nearly universal curve with t, with a steep transition to a value of about 0.25, consistent with s-channel quark knockout. The ?TT/?T ratio also drops rapidly with Q2, qualitatively consistent with s-channel helicity conservation. The ??/?? ratio for longitudinal photons indicates a small isoscalar contamination at W=1.95 GeV, consistent with what was observed in our earlier determination of the pion form factor at these kinematics.« less

  3. $B \\to \\pi \\ell \

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Flynn, J. M.; Izubuchi, T.; Kawanai, T.; Lehner, C.; Soni, A.; Van de Water, R. S.; Witzel, O.

    2015-04-14

    We calculate the form factors for B???? and Bs?K?? decay in dynamical lattice quantum chromodynamics (QCD) using domain-wall light quarks and relativistic b-quarks. We use the (2+1)-flavor gauge-field ensembles generated by the RBC and UKQCD collaborations with the domain-wall fermion action and Iwasaki gauge action. For the b-quarks we use the anisotropic clover action with a relativistic heavy-quark interpretation. We analyze data at two lattice spacings of a?0.11, 0.086 fm with unitary pion masses as light as M??290 MeV. We simultaneously extrapolate our numerical results to the physical light-quark masses and to the continuum and interpolate in the pion/kaon energymore »using SU(2) “hard-pion” chiral perturbation theory for heavy-light meson form factors. We provide complete systematic error budgets for the vector and scalar form factors f+(q2) and f0(q2)for both B???? and Bs?K?? at three momenta that span the q2 range accessible in our numerical simulations. Next we extrapolate these results to q2=0 using a model-independent z-parametrization based on analyticity and unitarity. We present our final results for f+(q2) and f0(q2)as the coefficients of the series in z and the matrix of correlations between them; this provides a parametrization of the form factors valid over the entire allowed kinematic range. Our results agree with other three-flavor lattice-QCD determinations using staggered light quarks, and have comparable precision, thereby providing important independent cross-checks. Both B???? and Bs?K?? decays enable determinations of the Cabibbo-Kobayashi-Maskawa matrix element |Vub|. Furthermore, we perform a combined z-fit of our numerical B???? form-factor data with the experimental measurements of the branching fraction from BABAR and Belle leaving the relative normalization as a free parameter; we obtain |Vub|=3.61(32)×10-3, where the error includes statistical and all systematic uncertainties. The same approach can be applied to the decay Bs?K?? to provide an alternative determination of |Vub| once the process has been measured experimentally. In anticipation of future experimental measurements, we make predictions for B???? and Bs?K?? differential branching fractions and forward-backward asymmetries in the Standard Model.« less

  4. Precision measurements of $g_1$ of the proton and the deuteron with 6 GeV electrons

    E-Print Network [OSTI]

    Y. Prok; P. Bosted; N. Kvaltine; K. P. Adhikari; D. Adikaram; M. Aghasyan; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; H. Avakian; H. Baghdasaryan; J. Ball; N. A. Baltzell; M. Battaglieri; A. S. Biselli; J. Bono; W. J. Briscoe; J. Brock; W. K. Brooks; S. Bültmann; V. D. Burkert; C. Carlin; D. S. Carman; A. Celentano; S. Chandavar; L. Colaneri; P. L. Cole; M. Contalbrigo; O. Cortes; D. Crabb; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; G. E. Dodge; D. Doughty; R. Dupre; A. El Alaoui; L. El Fassi; L. Elouadrhiri; G. Fedotov; S. Fegan; R. Fersch; J. A. Fleming; T. A. Forest; M. Garcon; N. Gevorgyan; Y. Ghandilyan; G. P. Gilfoyle; F. X. Girod; K. L. Giovanetti; J. T. Goetz; W. Gohn; R. W. Gothe; K. A. Griffioen; B. Guegan; N. Guler; K. Haffidi; C. Hanretty; N. Harrison; M. Hattawy; K. Hicks; D. Ho; M. Holtrop; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; S. Jawalkar; X. Jiang; H. S. Jo; K. Joo; N. Kalantarians; C. Keith; D. Keller; M. Khandaker; A. Kim; W. Kim; A. Klein; F. J. Klein; S. Koirala; V. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; P. Lenisa; K. Livingston; H. Y. Lu; I . J. D. MacGregor; N. Markov; M. Mayee; B. McKinnon; D. Meekins; T. Mineeva; M. Mirazita; V. Mokeev; R. A. Montgomery; H. Moutarde; A Movsisyan; E. Munevar; C. Munoz Camacho; P. Nadel-Turonski; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; R. Paremuzyan; K. Park; P. Peng; J. J. Phillips; J. Pierce; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; D. Protopopescu; A. J. R. Puckett; B. A. Raue; D. Rimal; M. Ripani; A. Rizzo; G. Rosner; P. Rossi; P. Roy; F. Sabatié; M. S. Saini; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; Y. G. Sharabian; A. Simonyan; C. Smith; G. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; I. I. Strakovsky; S. Strauch; V. Sytnik; M. Taiuti; W. Tang; S. Tkachenko; M. Ungaro; B . Vernarsky; A. V. Vlassov; H. Voskanyan; E. Voutier; N. K. Walford; D . P. Watts; L. B. Weinstein; N. Zachariou; L. Zana; J. Zhang; B. Zhao; Z. W. Zhao; I. Zonta; for the CLAS collaboration

    2014-04-24

    The inclusive polarized structure functions of the proton and deuteron, g1p and g1d, were measured with high statistical precision using polarized 6 GeV electrons incident on a polarized ammonia target in Hall B at Jefferson Laboratory. Electrons scattered at lab angles between 18 and 45 degrees were detected using the CEBAF Large Acceptance Spectrometer (CLAS). For the usual DIS kinematics, Q^2>1 GeV^2 and the final-state invariant mass W>2 GeV, the ratio of polarized to unpolarized structure functions g1/F1 is found to be nearly independent of Q^2 at fixed x. Significant resonant structure is apparent at values of W up to 2.3 GeV. In the framework of perturbative QCD, the high-W results can be used to better constrain the polarization of quarks and gluons in the nucleon, as well as high-twist contributions.

  5. Evidence for the Onset of Color Transparency in $?^0$ Electroproduction off Nuclei

    E-Print Network [OSTI]

    L. El Fassi; L. Zana; K. Hafidi; M. Holtrop; B. Mustapha; W. K. Brooks; H. Hakobyan; X. Zheng; K. P. Adhikari; D. Adikaram; M. Aghasyan; M. J. Amaryan; M. Anghinolfi; J. Arrington; H. Avakian; H. Baghdasaryan; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; C. Bookwalter; D. Branford; W. J. Briscoe; S. Bultmann; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; P. L. Cole; M. Contalbrigo; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; B. Dey; R. Dickson; C. Djalali; G. E. Dodge; D. Doughty; R. Dupre; H. Egiyan; A. El Alaoui; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; M. Y. Gabrielyan; M. Garcon; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; W. Gohn; E. Golovatch; R. W. Gothe; K. A. Griffioen; M. Guidal; L. Guo; C. Hanretty; D. Heddle; K. Hicks; R. J. Holt; C. E. Hyde; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; S. S. Jawalkar; D. Keller; M. Khandaker; P. Khetarpal; A. Kim; W. Kim; A. Klein; F. J. Klein; V. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; V. Kuznetsov; J. M. Laget; H. Y. Lu; I. J. D. MacGregor; Y. Mao; N. Markov; M. Mayer; J. McAndrew; B. McKinnon; C. A. Meyer; T. Mineeva; M. Mirazita; V. Mokeev; B. Moreno; H. Moutarde; E. Munevar; P. Nadel-Turonski; A. Ni; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. Pappalardo; R. Paremuzyan; K. Park; S. Park; E. Pasyuk; S. Anefalos Pereira; E. Phelps; S. Pisano; S. Pozdniakov; J. W. Price; S. Procureur; D. Protopopescu; B. A. Raue; P. E. Reimer; G. Ricco; D. Rimal; M. Ripani; B. G. Ritchie; G. Rosner; P. Rossi; F. Sabatie; M. S. Saini; C. Salgado; D. Schott; R. A. Schumacher; H. Seraydaryan; Y. G. Sharabian; E. S. Smith; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; P. Stoler; S. Strauch; M. Taiuti; W. Tang; C. E. Taylor; D. J. Tedeschi; S. Tkachenko; M. Ungaro; B . Vernarsky; M. F. Vineyard; H. Voskanyan; E. Voutier; D. Watts; L. B. Weinstein; D. P. Weygand; M. H. Wood; N. Zachariou; B. Zhao; Z. W. Zhao

    2012-05-11

    We have measured the nuclear transparency of the incoherent diffractive $A(e,e'\\rho^0)$ process in $^{12}$C and $^{56}$Fe targets relative to $^2$H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced $\\rho^0$'s on a nucleus relative to deuterium, which is sensitive to $\\rho A$ interaction, was studied as function of the coherence length ($l_c$), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared ($Q^2$). While the transparency for both $^{12}$C and $^{56}$Fe showed no $l_c$ dependence, a significant $Q^2$ dependence was measured, which is consistent with calculations that included the color transparency effects.

  6. A covariant model for the gamma N -> N(1535) transition at high momentum transfer

    SciTech Connect (OSTI)

    G. Ramalho, M.T. Pena

    2011-08-01

    A relativistic constituent quark model is applied to the gamma N -> N(1535) transition. The N(1535) wave function is determined by extending the covariant spectator quark model, previously developed for the nucleon, to the S11 resonance. The model allows us to calculate the valence quark contributions to the gamma N -> N(1535) transition form factors. Because of the nucleon and N(1535) structure the model is valid only for Q^2> 2.3 GeV^2. The results are compared with the experimental data for the electromagnetic form factors F1* and F2* and the helicity amplitudes A_1/2 and S_1/2, at high Q^2.

  7. Multiplicity of (Mini-)Jets at Small x

    E-Print Network [OSTI]

    Carlo Ewerz; Bryan R. Webber

    1999-07-20

    We derive closed expressions for the mean and variance of the (mini-)jet multiplicity distribution in hard scattering processes at low x. Here (mini-)jets are defined as those due to initial-state radiation of gluons with transverse momenta greater than some resolution scale m_R, where Lambda^2 << m_R^2 << Q^2, Lambda being the intrinsic QCD scale and Q the momentum transfer scale of the hard scattering. Our results are valid to leading order in log(1/x) but include all sub-leading logarithms of Q^2/m_R^2. As an illustration, we predict the mini-jet multiplicity in Higgs boson production at the Large Hadron Collider.

  8. Renormalon Phenomena in Jets and Hard Processes

    E-Print Network [OSTI]

    B. R. Webber

    1997-12-02

    The `renormalon' or `dispersive' method for estimating non-perturbative corrections to QCD observables is reviewed. The corrections are power-suppressed, i.e. of the form $A/Q^p$ where $Q$ is the hard process momentum scale. The renormalon method exploits the connection between divergences of the QCD perturbation series and low-momentum dynamics to predict the power, $p$. The further assumption of an approximately universal low-energy effective strong coupling leads to relationships between the coefficients $A$ for different observables. Results on $1/Q^2$ corrections to deep inelastic structure functions and $1/Q$ corrections to event shapes are presented and compared with experiment. Shape variables that could be free of $1/Q$ and $\\as(Q^2)/Q$ corrections are suggested.

  9. Non-perturbative effects in the energy-energy correlation

    E-Print Network [OSTI]

    Yu. L. Dokshitzer; G. Marchesini; B. R. Webber

    1999-05-14

    The fully resummed next-to-leading-order perturbative calculation of the energy-energy correlation in $e^+e^-$ annihilation is extended to include the leading non-perturbative power-behaved contributions computed using the ``dispersive method'' applied earlier to event shape variables. The correlation between a leading (anti)quark and a gluon produces a non-perturbative 1/Q contribution, while non-perturbative effects in the quark-antiquark correlation give rise to a smaller contribution $\\ln Q^2/Q^2$. In the back-to-back region, the power-suppressed contributions actually decrease much more slowly, as small non-integer powers of 1/Q, as a result of the interplay with perturbative effects. The hypothesis of a universal low-energy form for the strong coupling relates the coefficients of these contributions to those measured for other observables.

  10. Exclusive pi^0 electroproduction at W > 2 GeV with CLAS

    SciTech Connect (OSTI)

    Bedlinskiy, I.; Kubarovsky, V.; Niccolai, S.; Stoler, P.; Adhikari, K.P.; Anderson, M.D.; Pereira, S. Anefalos; Avakian, H.; Ball, J.; Baltzell, N.A.; Battaglieri, M.; Batourine, V.; Biselli, A.S.; Boiarinov, S.; Bono, J.; Briscoe, W.J.; Brooks, W.K.; Burkert, V.D.; Carman, D.S.; Celentano, A.; Chandavar, S.; Colaneri, L.; Cole, P.L.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Doughty, D.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Fleming, J.A.; Forest, T.A.; Garillon, B.; Garcon, M.; Gavalian, G.; Gevorgyan, N.; Ghandilyan, Y.; Gilfoyle, G.P.; Giovanetti, K.L.; Girod, F.X.; Golovatch, E.; Gothe, R.W.; Griffioen, K.A.; Guegan, B.; Guo, L.; Hafidi, K.; Hakobyan, H.; Harrison, N.; Hattawy, M.; Hicks, K.; Holtrop, M.; Ireland, D.G.; Ishkhanov, B.S.; Isupov, E.L.; Jenkins, D.; Jo, H.S.; Joo, K.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F.J.; Koirala, S.; Kuhn, S.E.; Kuleshov, S.V.; Lenisa, P.; Levine, W.I.; Livingston, K.; Lu, H.Y.; MacGregor, I.J.D.; Markov, N.; Mayer, M.; McKinnon, B.; Mirazita, M.; Mokeev, V.; Montgomery, R.A.; Moody, C.I.; Moutarde, H.; Movsisyan, A; Munoz Camacho, C.; Nadel-Turonski, P.; Niculescu, I.; Osipenko, M.; Ostrovidov, A.I.; Pappalardo, L.L.; Park, K.; Park, S.; Pasyuk, E.; Phelps, E.; Phelps, W.; Phillips, J.J.; Pisano, S.; Pogorelko, O.; Price, J.W.; Prok, Y.; Protopopescu, D.; Procureur, S.; Puckett, A.J.R.; Raue, B.A.; Ripani, M.; Ritchie, B.G.; Rizzo, A.; Rossi, P.; Roy, P.; Sabatié, F.; Salgado, C.; Schott, D.; Schumacher, R.A.; Seder, E.; Senderovich, I.; Sharabian, Y.G.; Simonyan, A.; Smith, G.D.; Sober, D.I.; Sokhan, D.; Stepanyan, S.S.; Strauch, S.; Sytnik, V.; Tang, W.; Tian, Ye; Ungaro, M.; Vlassov, A.V.; Voskanyan, H.; Voutier, E.; Walford, N.K.; Watts, D.; Wei, X.; Weinstein, L.B.; Yurov, M.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z.W.; Zonta, I.

    2014-08-01

    Exclusive neutral-pion electroproduction (ep-->e'p'pi0) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections d4sigma/dtdQ2dxBdphipi and structure functions sigmaT+epsilonsigmaL,sigmaTT and ?LT as functions of t were obtained over a wide range of Q2 and xB. The data are compared with Regge and handbag theoretical calculations. Analyses in both frameworks find that a large dominance of transverse processes is necessary to explain the experimental results. For the Regge analysis it is found that the inclusion of vector meson rescattering processes is necessary to bring the magnitude of the calculated and measured structure functions into rough agreement. In the handbag framework, there are two independent calculations, both of which appear to roughly explain the magnitude of the structure functions in terms of transversity generalized parton distributions.

  11. Exclusive diffractive production of real photons and vector mesons in a factorized Regge-pole model with non-linear Pomeron trajectory

    E-Print Network [OSTI]

    S. Fazio; R. Fiore; L. Jenkovszky; A. Lavorini

    2012-02-12

    Exclusive diffractive production of real photons and vector mesons in ep collisions has been studied at HERA in a wide kinematic range. Here we present and discuss a Regge-type model of real photon production (Deeply Virtual Compton Scattering), as well as production of vector mesons (VMP) treated on the same footing by using an extension of a factorized Regge-pole model proposed earlier. The model has been fitted to the HERA data. Despite the very small number of the free parameters, the model gives a satisfactory description of the experimental data, both for the total cross section as a function of the photon virtuality Q2 or the energy W in the center of mass of the gamma\\star-p system, and the differential cross sections as a function of the squared four-momentum transfer t with fixed Q2 and W.

  12. Radioactive contamination of BaF2 crystal scintillator

    E-Print Network [OSTI]

    O. G. Polischuk; P. Belli; R. Bernabei; F. Cappella; V. Caracciolo; R. Cerulli; A. Di Marco; F. A. Danevich; A. Incicchitti; D. V. Poda; V. I. Tretyak

    2013-12-17

    Barium fluoride (BaF$_2$) crystal scintillators are promising detectors to search for double beta decay processes in $^{130}$Ba ($Q_{2{\\beta}}$ = 2619(3) keV) and $^{132}$Ba ($Q_{2{\\beta}}$ = 844(1) keV). The $^{130}$Ba isotope is of particular interest because of the indications on 2${\\beta}$ decay found in two geochemical experiments. The radioactive contamination of BaF$_2$ scintillation crystal with mass of 1.714 kg was measured over 113.4 hours in a low-background DAMA/R&D set-up deep underground (3600 m w.e.) at the Gran Sasso National Laboratories of INFN (LNGS, Italy). The half-life of $^{212}$Po (present in the crystal scintillator due to contamination by radium) was estimated as $T_{1/2}$ = 298.8 $\\pm$ 0.8(stat.) $\\pm$ 1.4(syst.) ns by analysis of the events pulse profiles.

  13. Measurement of Muon Antineutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_{\

    E-Print Network [OSTI]

    Fields, L; Aliaga, L; Altinok, O; Bodek, A; Boehnlein, D; Bradford, R; Brooks, W K; Budd, H; Butkevich, A; Caicedo, D A M; Castromonte, C M; Christy, M E; da Motta, H; Damiani, D S; Danko, I; Datta, M; Day, M; DeMaat, R; Devan, J; Diaz, G A; Dytman, S A; Eberly, B; Edmondson, D A; Felix, J; Fitzpatrick, T; Fiorentini, G A; Gago, A M; Gallagher, H; Gobbi, B; Gran, R; Harris, D A; Higuera, A; Howley, I J; Hurtado, K; Jerkins, M; Kafka, T; Kanter, M O; Keppel, C; Kordosky, M; Krajeski, A H; Kulagin, S A; Le, T; Leister, A G; Maggi, G; Maher, E; Manly, S; Mann, W A; Marshall, C M; McFarland, K S; McGivern, C L; McGowan, A M; Mislivec, A; Morfin, J G; Mousseau, J; Naples, D; Nelson, J K; Niculescu, G; Niculescu, I; Ochoa, N; O'Connor, C D; Osta, J; Palomino, J L; Paolone, V; Park, J; Patrick, C E; Perdue, G N; Pena, C; Rakotondravohitra, L; Ransome, R D; Ray, H; Ren, L; Rodrigues, P A; Sassin, K E; Schellman, H; Schmitz, D W; Schneider, R M; Schulte, E C; Sedita, P; Simon, C; Snider, F D; Snyder, M C; Sobczyk, J T; Salinas, C J Solano; Tagg, N; Tan, W; Tice, B G; Tzanakos, G; Velasquez, J P; Walding, J; Walton, T; Wolcott, J; Wolthuis, B A; Zavala, G; Zhang, D; Ziemer, B P

    2013-01-01

    We have isolated muon anti-neutrino charged-current quasi-elastic interactions occurring in the segmented scintillator tracking region of the MINERvA detector running in the NuMI neutrino beam at Fermilab. We measure the flux-averaged differential cross-section, d{\\sigma}/dQ^2, and compare to several theoretical models of quasi-elastic scattering. Good agreement is obtained with a model where the nucleon axial mass, M_A, is set to 0.99 GeV/c^2 but the nucleon vector form factors are modified to account for the observed enhancement, relative to the free nucleon case, of the cross-section for the exchange of transversely polarized photons in electron-nucleus scattering. Our data at higher Q^2 favor this interpretation over an alternative in which the axial mass is increased.

  14. Measurement of Muon Neutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_? ~ 3.5 GeV

    E-Print Network [OSTI]

    The MINERvA collaboration; G. A. Fiorentini; D. W. Schmitz; P. A. Rodrigues; L. Aliaga; O. Altinok; B. Baldin; A. Baumbaugh; A. Bodek; D. Boehnlein; S. Boyd; R. Bradford; W. K. Brooks; H. Budd; A. Butkevich; D. A. Martinez Caicedo; C. M. Castromonte; M. E. Christy; H. Chung; J. Chvojka; M. Clark; H. da Motta; D. S. Damiani; I. Danko; M. Datta; M. Day; R. DeMaat; J. Devan; E. Draeger; S. A. Dytman; G. A. Díaz; B. Eberly; D. A. Edmondson; J. Felix; T. Fitzpatrick; L. Fields; A. M. Gago; H. Gallagher; C. A. George; J. A. Gielata; C. Gingu; B. Gobbi; R. Gran; N. Grossman; J. Hanson; D. A. Harris; J. Heaton; A. Higuera; I. J. Howley; K. Hurtado; M. Jerkins; T. Kafka; J. Kaisen; M. O. Kanter; C. E. Keppel; J. Kilmer; M. Kordosky; A. H. Krajeski; S. A. Kulagin; T. Le; H. Lee; A. G. Leister; G. Locke; G. Maggi; E. Maher; S. Manly; W. A. Mann; C. M. Marshall; K. S. McFarland; C. L. McGivern; A. M. McGowan; A. Mislivec; J. G. Morf?; J. Mousseau; D. Naples; J. K. Nelson; G. Niculescu; I. Niculescu; N. Ochoa; C. D. O'Connor; J. Olsen; B. Osmanov; J. Osta; J. L. Palomino; V. Paolone; J. Park; C. E. Patrick; G. N. Perdue; C. Peña; L. Rakotondravohitra; R. D. Ransome; H. Ray; L. Ren; C. Rude; K. E. Sassin; H. Schellman; R. M. Schneider; E. C. Schulte; C. Simon; F. D. Snider; M. C. Snyder; J. T. Sobczyk; C. J. Solano Salinas; N. Tagg; W. Tan; B. G. Tice; G. Tzanakos; J. P. Velásquez; J. Walding; T. Walton; J. Wolcott; B. A. Wolthuis; N. Woodward; G. Zavala; H. B. Zeng; D. Zhang; L. Y. Zhu; B. P. Ziemer

    2014-03-30

    We report a study of muon neutrino charged-current quasi-elastic events in the segmented scintillator inner tracker of the MINERvA experiment running in the NuMI neutrino beam at Fermilab. The events were selected by requiring a {\\mu}^- and low calorimetric recoil energy separated from the interaction vertex. We measure the flux-averaged differential cross-section, d{\\sigma}/dQ^2, and study the low energy particle content of the final state. Deviations are found between the measured d{\\sigma}/dQ^2 and the expectations of a model of independent nucleons in a relativistic Fermi gas. We also observe an excess of energy near the vertex consistent with multiple protons in the final state.

  15. Measurement of Muon Antineutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_? ~ 3.5 GeV

    E-Print Network [OSTI]

    The MINERvA collaboration; L. Fields; J. Chvojka; L. Aliaga; O. Altinok; B. Baldin; A. Baumbaugh; A. Bodek; D. Boehnlein; S. Boyd; R. Bradford; W. K. Brooks; H. Budd; A. Butkevich; D. A. Martinez Caicedo; C. M. Castromonte; M. E. Christy; H. Chung; M. Clark; H. da Motta; D. S. Damiani; I. Danko; M. Datta; M. Day; R. DeMaat; J. Devan; E. Draeger; S. A. Dytman; G. A. Díaz; B. Eberly; D. A. Edmondson; J. Felix; T. Fitzpatrick; G. A. Fiorentini; A. M. Gago; H. Gallagher; C. A. George; J. A. Gielata; C. Gingu; B. Gobbi; R. Gran; N. Grossman; J. Hanson; D. A. Harris; J. Heaton; A. Higuera; I. J. Howley; K. Hurtado; M. Jerkins; T. Kafka; J. Kaisen; M. O. Kanter; C. E. Keppel; J. Kilmer; M. Kordosky; A. H. Krajeski; S. A. Kulagin; T. Le; H. Lee; A. G. Leister; G. Locke; G. Maggi; E. Maher; S. Manly; W. A. Mann; C. M. Marshall; K. S. McFarland; C. L. McGivern; A. M. McGowan; A. Mislivec; J. G. Morfín; J. Mousseau; D. Naples; J. K. Nelson; G. Niculescu; I. Niculescu; N. Ochoa; C. D. O'Connor; J. Olsen; B. Osmanov; J. Osta; J. L. Palomino; V. Paolone; J. Park; C. E. Patrick; G. N. Perdue; C. Peña; L. Rakotondravohitra; R. D. Ransome; H. Ray; L. Ren; P. A. Rodrigues; C. Rude; K. E. Sassin; H. Schellman; D. W. Schmitz; R. M. Schneider; E. C. Schulte; C. Simon; F. D. Snider; M. C. Snyder; J. T. Sobczyk; C. J. Solano Salinas; N. Tagg; W. Tan; B. G. Tice; G. Tzanakos; J. P. Velásquez; J. Walding; T. Walton; J. Wolcott; B. A. Wolthuis; N. Woodward; G. Zavala; H. B. Zeng; D. Zhang; L. Y. Zhu; B. P. Ziemer

    2014-03-30

    We have isolated muon anti-neutrino charged-current quasi-elastic interactions occurring in the segmented scintillator tracking region of the MINERvA detector running in the NuMI neutrino beam at Fermilab. We measure the flux-averaged differential cross-section, d{\\sigma}/dQ^2, and compare to several theoretical models of quasi-elastic scattering. Good agreement is obtained with a model where the nucleon axial mass, M_A, is set to 0.99 GeV/c^2 but the nucleon vector form factors are modified to account for the observed enhancement, relative to the free nucleon case, of the cross-section for the exchange of transversely polarized photons in electron-nucleus scattering. Our data at higher Q^2 favor this interpretation over an alternative in which the axial mass is increased.

  16. Measurement of Muon Neutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_{\

    E-Print Network [OSTI]

    Fiorentini, G A; Rodrigues, P A; Aliaga, L; Altinok, O; Bodek, A; Boehnlein, D; Bradford, R; Brooks, W K; Budd, H; Butkevich, A; Caicedo, D A M; Castromonte, C M; Christy, M E; Chvojka, J; da Motta, H; Damiani, D S; Danko, I; Datta, M; Day, M; DeMaat, R; Devan, J; Diaz, G A; Dytman, S A; Eberly, B; Edmondson, D A; Felix, J; Fields, L; Fitzpatrick, T; Gago, A M; Gallagher, H; Gobbi, B; Gran, R; Harris, D A; Higuera, A; Howley, I J; Hurtado, K; Jerkins, M; Kafka, T; Kanter, M O; Keppel, C; Kordosky, M; Krajeski, A H; Kulagin, S A; Le, T; Leister, A G; Maggi, G; Maher, E; Manly, S; Mann, W A; Marshall, C M; McFarland, K S; McGivern, C L; McGowan, A M; Mislivec, A; Morfin, J G; Mousseau, J; Naples, D; Nelson, J K; Niculescu, G; Niculescu, I; Ochoa, N; O'Connor, C D; Osta, J; Palomino, J L; Paolone, V; Park, J; Patrick, C E; Perdue, G N; Pena, C; Rakotondravohitra, L; Ransome, R D; Ray, H; Ren, L; Sassin, K E; Schellman, H; Schneider, R M; Schulte, E C; Sedita, P; Simon, C; Snider, F D; Snyder, M C; Sobczyk, J T; Salinas, C J Solano; Tagg, N; Tan, W; Tice, B G; Tzanakos, G; Velasquez, J P; Walding, J; Walton, T; Wolcott, J; Wolthuis, B A; Zavala, G; Zhang, D; Ziemer, B P

    2013-01-01

    We report a study of muon neutrino charged-current quasi-elastic events in the segmented scintillator inner tracker of the MINERvA experiment running in the NuMI neutrino beam at Fermilab. The events were selected by requiring a {\\mu}^- and low calorimetric recoil energy separated from the interaction vertex. We measure the flux-averaged differential cross-section, d{\\sigma}/dQ^2, and study the low energy particle content of the final state. Deviations are found between the measured d{\\sigma}/dQ^2 and the expectations of a model of independent nucleons in a relativistic Fermi gas. We also observe an excess of energy near the vertex consistent with multiple protons in the final state.

  17. Study of the semileptonic charm decays D-0 ->pi(-)l(+)nu and D-0 -> K(-)l(+)nu

    E-Print Network [OSTI]

    Besson, David Zeke

    2005-01-01

    .0135 .0133q 2 .0134,are d.0255 dq 2 .0133D ! h?.0023.0134.0136 G 2 F 24.0025 3 p 3 h jV cd.0133s.0134 j 2 jf h .0135 .0133q 2 .0134j 2 : Here h is .0025 or K,andq 2 is the invariant mass squared of the lepton-neutrino system and ranges from m 2 ? to 2..., 011802 (2005) PHYSICAL REVIEW LETTERS week ending 14 JANUARY 2005 H. Vogel, 10 M. E. Watkins, 10 N. E. Adam, 11 J. P. Alexander, 11 K. Berkelman, 11 D. G. Cassel, 11 J. E. Duboscq, 11 K. M. Ecklund, 11 R. Ehrlich, 11 L. Fields, 11 R. S. Galik, 11 L...

  18. Infrared freezing of Euclidean observables and analyticity in perturbative QCD

    E-Print Network [OSTI]

    Irinel Caprini; Jan Fischer

    2006-12-21

    The renormalization-group improved finite order expansions of the QCD observables have an unphysical singularity in the Euclidean region, due to the Landau pole of the running coupling. Recently it was claimed that, by using a modified Borel representation, the leading one-chain term in a skeleton expansion of the Euclidean QCD observables is finite and continuous across the Landau pole, and then exhibits an infrared freezing behaviour, vanishing at $Q^2=0$. In the present paper we show, using for illustration the Adler-${\\cal D}$ function, that the above Borel prescription violates the causality properties expressed by energy-plane analyticity: the function ${\\cal D}(Q^2)$ thus defined is the boundary value of a piecewise analytic function in the complex plane, instead of being a standard analytic function. So, the price to be paid for the infrared freezing of Euclidean QCD observables is the loss of a fundamental property of local quantum field theory.

  19. Saturation in diffractive deep inelastic eA scattering

    E-Print Network [OSTI]

    M. S. Kugeratski; V. P. Goncalves; F. S. Navarra

    2006-02-24

    In this paper we investigate the saturation physics in diffractive deep inelastic electron-ion scattering. We estimate the energy and nuclear dependence of the ratio $\\sigma^{diff}/\\sigma^{tot}$ and predict the $x_{\\pom}$ and $\\beta$ behavior of the nuclear diffractive structure function $F_{2,A}^{D(3)}(Q^2, \\beta, x_{IP})$. Moreover, we analyze the ratio $R^{diff}_{A1,A2}(Q^2, \\beta, x_{IP}) = F_{2,A1} ^{D(3)}/F_{2,A2} ^{D(3)}$, which probes the nuclear dependence of the structure of the Pomeron. We show that saturation physics predicts that approximately 37 % of the events observed at eRHIC should be diffractive.

  20. The electric and magnetic form factors of the proton

    E-Print Network [OSTI]

    A1 Collaboration; J. C. Bernauer; M. O. Distler; J. Friedrich; Th. Walcher; P. Achenbach C. Ayerbe Gayoso; R. Böhm; L. Debenjak; L. Doria; A. Esser; H. Fonvieille; M. Gómez Rodrígues de la Paz; J. M. Friedrich; M. Makek; H. Merkel; D. G. Middleton; U. Müller; L. Nungesser; J. Pochodzalla; M. Potokar; S. Sánchez Majos; B. S. Schlimme; S. Širca; M. Weinriefer

    2014-07-29

    The paper describes a precise measurement of electron scattering off the proton at momentum transfers of $0.003 \\lesssim Q^2 \\lesssim 1$\\ GeV$^2$. The average point-to-point error of the cross sections in this experiment is $\\sim$ 0.37%. These data are used for a coherent new analysis together with all world data of unpolarized and polarized electron scattering from the very smallest to the highest momentum transfers so far measured. The extracted electric and magnetic form factors provide new insight into their exact shape, deviating from the classical dipole form, and of structure on top of this gross shape. The data reaching very low $Q^2$ values are used for a new determination of the electric and magnetic radii. An empirical determination of the Two-Photon-Exchange (TPE) correction is presented. The implications of this correction on the radii and the question of a directly visible signal of the pion cloud are addressed.

  1. Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

    E-Print Network [OSTI]

    H1 Collaboration

    2010-01-04

    The production of leading neutrons, where the neutron carries a large fraction x_L of the incoming proton's longitudinal momentum, is studied in deep-inelastic positron-proton scattering at HERA. The data were taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 122 pb^{-1}. The semi-inclusive cross section is measured in the phase space defined by the photon virtuality 6 neutron transverse momentum p_T neutron structure function, F_2^{LN(3)}(Q^2,x,x_L), and the fraction of deep-inelastic scattering events containing a leading neutron are studied as a function of Q^2, x and x_L. Assuming that the pion exchange mechanism dominates leading neutron production, the data provide constraints on the shape of the pion structure function.

  2. Quasi-power law ensembles

    E-Print Network [OSTI]

    Wilk, Grzegorz

    2015-01-01

    Quasi-power law ensembles are discussed from the perspective of nonextensive Tsallis distributions characterized by a nonextensive parameter $q$. A number of possible sources of such distributions are presented in more detail. It is further demonstrated that data suggest that nonextensive parameters deduced from Tsallis distributions functions $f\\left(p_T\\right)$, $q_1$, and from multiplicity distributions (connected with Tsallis entropy), $q_2$, are not identical and that they are connected via $q_1 + q_2 = 2$. It is also shown that Tsallis distributions can be obtained directly from Shannon information entropy, provided some special constraints are imposed. They are connected with the type of dynamical processes under consideration (additive or multiplicative). Finally, it is shown how a Tsallis distribution can accommodate the log-oscillating behavior apparently seen in some multiparticle data.

  3. Quasi-power law ensembles

    E-Print Network [OSTI]

    Grzegorz Wilk; Zbigniew W?odarczyk

    2014-12-12

    Quasi-power law ensembles are discussed from the perspective of nonextensive Tsallis distributions characterized by a nonextensive parameter $q$. A number of possible sources of such distributions are presented in more detail. It is further demonstrated that data suggest that nonextensive parameters deduced from Tsallis distributions functions $f\\left(p_T\\right)$, $q_1$, and from multiplicity distributions (connected with Tsallis entropy), $q_2$, are not identical and that they are connected via $q_1 + q_2 = 2$. It is also shown that Tsallis distributions can be obtained directly from Shannon information entropy, provided some special constraints are imposed. They are connected with the type of dynamical processes under consideration (additive or multiplicative). Finally, it is shown how a Tsallis distribution can accommodate the log-oscillating behavior apparently seen in some multiparticle data.

  4. Flavor decomposition of the elastic nucleon electromagnetic form factors

    SciTech Connect (OSTI)

    C.D. Cates, C.W. Jager, S. Riordan, B. Wojtsekhowski

    2011-06-01

    The u- and d-quark contributions to the elastic nucleon electromagnetic form factors have been determined using experimental data on GEn , GMn , GpE , and GpM . Such a flavor separation of the form factors became possible up to 3.4 GeV2 with recent data on GEn from Hall A at JLab. At a negative four-momentum transfer squared Q2 above 1 GeV2, for both the u- and d-quark components, the ratio of the Pauli form factor to the Dirac form factor, F2/F1, was found to be almost constant, and for each of F2 and F1 individually, the d-quark component drops continuously with increasing Q2.

  5. Neutron structure effects in the deuteron and one neutron halos

    E-Print Network [OSTI]

    M. Nowakowski; N. G. Kelkar; T. Mart

    2006-08-29

    Although the neutron (n) does not carry a total electric charge, its charge and magnetization distributions represented in momentum space by the electromagnetic form factors, $F_1^{(n)} (q^2)$ and $F_2^{(n)} (q^2)$, lead to an electromagnetic potential of the neutron. Using this fact, we calculate the electromagnetic corrections to the binding energy, $B_d$, of the deuteron and a one neutron halo nucleus (11Be), by evaluating the neutron-proton and the neutron-charged core (10Be) potential, respectively. The correction to $B_d$ (~9 keV) is comparable to that arising due to the inclusion of the $\\Delta$-isobar component in the deuteron wave function. In the case of the more loosely bound halo nucleus, 11Be, the correction is close to about 2 keV.

  6. Momentum dependent quark mass in two-point correlators

    E-Print Network [OSTI]

    B. Holdom; Randy Lewis

    1995-04-26

    A momentum dependent quark mass may be incorporated into a quark model in a manner consistent with dynamically broken chiral symmetry. We use this to study the high $Q^2$ behavior of the vector, axialvector, scalar and pseudoscalar two-point correlation functions. Expanding the results to order $1/Q^6$, we show the correspondence between the dynamical quark mass and the vacuum condensates which appear in the operator product expansion of QCD. We recover the correct leading logarithmic $Q^2$ dependence of the various terms in the OPE, but we also find substantial subleading corrections which are numerically huge in a specific case. We conclude by using the vector minus axialvector correlator to estimate the $\\pi^+ - \\pi^0$ electromagnetic mass difference.

  7. Comparative study of nuclear effects in polarized electron scattering from 3He

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ethier, Jacob James; Melnitchouk, Wally

    2013-11-04

    We present a detailed analysis of nuclear effects in inclusive electron scattering from polarized 3He nuclei for polarization asymmetries, structure functions and their moments, both in the nucleon resonance and deep-inelastic regions. We compare the results of calculations within the weak binding approximation at finite Q2 with the effective polarization ansatz often used in experimental data analyses, and explore the impact of ? components in the nuclear wave function and nucleon off-shell corrections on extractions of the free neutron structure. Using the same framework we also make predictions for the Q2 dependence of quasielastic scattering from polarized 3He, data onmore »which can be used to constrain the spin-dependent nuclear smearing functions in 3He.« less

  8. Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Jo, Hyon -Suk

    2015-11-17

    Unpolarized and beam-polarized four-fold cross sections $\\frac{d^4 \\sigma}{dQ^2 dx_B dt d\\phi}$ for the $ep\\to e^\\prime p^\\prime \\gamma$ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 ($Q^2,x_B,t$) bins over the widest phase space ever explored in the valence-quark region. Several models of Generalized Parton Distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD $H$, expected to be the dominant contributor to these observables. Thus, through a leading-twist extraction of Compton Form Factors, these results reveal a tomographic imagemore »of the nucleon.« less

  9. Evidence for the onset of color transparency in ?0 electroproduction off nuclei

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Guo, L.; Hanretty, C.; Hicks, K.; Holt, R. J.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jawalker, S. S.; et al

    2012-05-11

    We have measured the nuclear transparency of the incoherent diffractive A(e,e'?0) process in 12C and 56Fe targets relative to 2H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced {rho}{sup 0}'s on a nucleus relative to deuterium, which is sensitive to ?A interaction, was studied as function of the coherence length (Ic), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared (Q2). Thus, while the transparency for both 12C and 56Fe showed no Ic dependence, a significant Q2 dependence was measured, which is consistent with calculations that included themore »color transparency effects.« less

  10. Theoretical investigation of projectile angular dependence of the ratio of double to single ionization of helium by fast proton impact 

    E-Print Network [OSTI]

    Fang, Xushan

    1990-01-01

    and the ejected electron taken into account, by dp 2s /. UZscis 'i dn, , i 2 It, (1 ? eicp(2nir)) 0 J& ('2. 27u ) where I'(1 ? iN)l (in ? 2 - i V) It? I'(in ? 2) ] F(in 2+ iN iN 1 () (2 27$) ((Q ? ' k)2 ? cr2]?+2+iN (kb+ Qb)' (k+ Q)2 ? ' or ' ( 2. '27c... j ail cl ? iN f dqb 2 1 t' J (qb Qb)2+2iN [(q+ k)2+ cr2]in+2 2 s( ? [q +(cr ? ip)2]an-t[q +(1 ? in)q k] ? [Q +(c ? ip)2]?[Q2+(I ? in)Q. k]) q & qi=tqs (2. 27d) The calculated results for projectile energies of 0 3, 1, 3 and 6 Me...

  11. Measurement of “pretzelosity” asymmetry of charged pion production in semi-inclusive deep inelastic scattering on a polarized ³He target

    SciTech Connect (OSTI)

    Zhang, Y.; Qian, X.; Allada, K.; Dutta, C.

    2014-11-01

    An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized ³He target was performed at Jefferson Lab in the kinematic region of 0.16 < x < 0.35 and 1.4 < Q² < 2.7 GeV². Our results show that both ?± on He3 and on neutron pretzelosity asymmetries are consistent with zero within experimental uncertainties.

  12. A covariant model for the $?^\\ast N \\to N^\\ast(1520)$ reaction

    E-Print Network [OSTI]

    G. Ramalho; M. T. Pena

    2014-02-03

    We apply the covariant spectator quark model to the study of the electromagnetic structure of the $N^\\ast(1520)$ state ($J^{P}= \\frac{3}{2}^-$), an important resonance from the second resonance region in both spacelike and timelike regimes. The contributions from the valence quark effects are calculated for the $\\gamma^\\ast N \\to N^\\ast(1520)$ helicity amplitudes. The results are used to parametrize the meson cloud dominant at low $Q^2$.

  13. Structure functions of the 2d O(n) non-linear sigma models

    E-Print Network [OSTI]

    Janos Balog; Peter Weisz

    2004-09-08

    We investigate structure functions in the 2-dimensional (asymptotically free) non-linear O(n) sigma-models using the non-perturbative S-matrix bootstrap program. In particular the exact small (Bjorken) x behavior is derived. Structure functions in the special case of the n=3 model are accurately computed over the whole x range for $-q^2/M^2functions in the 1/n approximation are also presented.

  14. Calculo Diferencial e Integral II EBiol, EBiom, EFT, EQ, MAC e Q

    E-Print Network [OSTI]

    Matos, João Palhoto

    C´alculo Diferencial e Integral II EBiol, EBiom, EFT, EQ, MAC e Q 2 de Abril de 2007 2a ficha de limite em (0, 0). 4 #12;C´alculo Diferencial e Integral II EBiol, EBiom, EFT, EQ, MAC e Q 30 de Mar¸co de prolongamento por continuidade de g a (0, 0). 8 #12;C´alculo Diferencial e Integral II EBiol, EBiom, EFT, EQ

  15. Jet Rates at Small x to Single-Logarithmic Accuracy

    E-Print Network [OSTI]

    Carlo Ewerz; Bryan R. Webber

    1999-04-06

    We present predictions of jet rates in deep inelastic scattering at small x to leading-logarithmic order in x, including all sub-leading logarithms of Q^2/m_R^2 where m_R is the transverse momentum scale at which jets are resolved. We give explicit results for up to three jets, and a perturbative expansion for multi-jet rates and jet multiplicities.

  16. Power Corrections and Renormalons in Deep Inelastic Structure Functions

    E-Print Network [OSTI]

    M. Dasgupta; B. R. Webber

    1996-04-23

    We study the power corrections (infrared renormalon contributions) to the coefficient functions for non-singlet deep inelastic structure functions due to gluon vacuum polarization insertions in one-loop graphs. Remarkably, for all the structure functions $F_1$, $F_2$, $F_3$ and $g_1$, there are only two such contributions, corresponding to $1/Q^2$ and $1/Q^4$ power corrections. We compute their dependence on Bjorken $x$. The results could be used to model the dominant higher-twist contributions.

  17. Electromagnetic vertex function of the pion at T > 0

    E-Print Network [OSTI]

    J. van der heide; J. H. Koch; E. Laermann

    2005-12-23

    The matrix element of the electromagnetic current between pion states is calculated in quenched lattice QCD at a temperature of $T = 0.93 T_c$. The nonperturbatively improved Sheikholeslami-Wohlert action is used together with the corresponding ${\\cal O}(a)$ improved vector current. The electromagnetic vertex function is extracted for pion masses down to $360 {\\rm MeV}$ and momentum transfers $Q^2 \\le 2.7 {\\rm GeV}^2$.

  18. Discovery of oscillatory dynamics of city-size distributions in world

    E-Print Network [OSTI]

    White, Douglas R.

    of pdf thru Skype you can ask questions, thru Humberto he will have a chat box to relay questions I test) China leads by 50 years in its Q values ­ up to 1850 PART III: Scaling Examples: Chinese-results are very similar, as reported for the 1- factor test. Q1 Q3 Q5 Q2 Q4 Q6 #12;7 Multiple measures of Q

  19. New measurements of high-momentum nucleons and short-range structures in nuclei

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fomin, N; Arrington, J; Benmokhtar, F; Boeglin, W; Bosted, P; Bruell, A; Bukhari, M.H. S; Chudakov, E; Clasie, B; Connell, S H; et al

    2012-02-29

    We present new, high-Q2 measurements of inclusive electron scattering from high-momentum nucleons in nuclei. This yields an improved extraction of the strength of two-nucleon correlations for several nuclei, including light nuclei where clustering effects can, for the first time, be examined. The data extend to the kinematic regime where three-nucleon correlations are expected to dominate and we observe significantly greater strength in this region than previous measurements.

  20. J. Phys. Chem. 1995,99, 2589-2593 Spectroscopy of Jet-Cooled AlY

    E-Print Network [OSTI]

    Morse, Michael D.

    participation in the chemical bonding. @ Abstract published in Advance ACS Abstracts, February 1, 1995. 0022 are r0"(X3%) = 2.8728 f0.0012 8, and r,'([9.5I3q) = 2.83 f0.03 A, respectively. The chemical bonding Recently this research group has investigated the chemical bonding between p-block and d-block metals

  1. Math 200 Problem Set VI 1) Find all second partial derivatives of f(x, y) = 3x2 + y2.

    E-Print Network [OSTI]

    Fournier, John J.F.

    of g(x). 5) In a certain community, there are two breweries in competition, so that sales of each negatively affect the profits of the other. If brewery A produces x litres of beer per month and brewery B produces y litres per month, then the profits of the two breweries are given by P = 2x - 2x2 + y2 106 Q = 2

  2. A Closer look at the analysis of NLL BFKL.

    E-Print Network [OSTI]

    Andersen, Jeppe R

    –particle production leading to final states described by momenta k0 = pA? , k1, . . . , kn, kn+1 = pB? satisfying s? 2ki?1ki ? ti = q2i , qi = pA ? i?1 ? r0 kr, n+1 ? i=1 si = s n ? i=1 k2i , k 2 ? = ?k2, |ki?| ? |pA??| (1) The Regge limit is therefore suitable...

  3. On the physics of the $so_q(4)$ hydrogen atom

    E-Print Network [OSTI]

    P. G. Castro; R. Kullock

    2015-03-05

    In this work we investigate the $q$-deformation of the $so(4)$ dynamical symmetry of the hydrogen atom using the theory of the quantum group $su_q(2)$. We derive the energy spectrum in a physically consistent manner and find a degeneracy breaking as well as a smaller Hilbert space. We point out that using the deformed Casimir as was done before leads to inconsistencies in the physical interpretation of the theory.

  4. Coulomb Interaction Symmetries and the Mayer Series in the Two-Dimensional Dipole Gas

    E-Print Network [OSTI]

    Procacci, Aldo

    ´atica-ICEx, UFMG, CP 702, Belo Horizonte MG 30.161-970, Brazil 2 Dep. F´isica-ICEx, UFMG, CP 702, Belo Horizonte MG 30.161-970, Brazil 3 Instituto de F´isica, Universidade de S~ao Paulo 01452 S~ao Paulo, SP, Brazil carrying vectorial moments q of unit length (q R2 , q2 = 1), interacting via the potential V (1, 2) = (q1

  5. Asymmetric rotor analysis of DSOD spectra up to the r

    E-Print Network [OSTI]

    Giesen, Thomas

    West, Onagawa l6-1, Tsukuba 305-8569, Japan Received 17 January 2005; revised 18 January 2005; accepted, the a-type transitions are expected to appear at most only in the microwave and in the longer millimeter-wave of discharge-generated DSOD. At that time we had observed the r Q0 and r Q2 branches. The r Q3 branch

  6. Model Order Reduction Techniques I: The Reduced Basis Method

    E-Print Network [OSTI]

    that the thermal fin is initially at zero (non-dimensionalized) temperature and a heat flux is then applied for g(tk) = 1 - cos(tk) and µ = 0.05 (see slide 60 for the definition of the energy norm). Part 2 thus introduce a dual problem as defined in the lecture notes (see slide 75-79). Q2. Prove the output

  7. The Second Law of Thermodynamics Chemistry CHEM 213W

    E-Print Network [OSTI]

    Ronis, David M.

    ) It is impossi- ble to devise an engine operating in a cycle which does work by taking heat from a single heat is a Carnot refrigerator. If we adjust the sizes of E and R such that all the work is used to run the Carnot Q1 Q1 1 2 W= Q2 C H C where C is a Carnot engine and where the sizes of the Carnot engine and our

  8. Measurement of the antineutrino neutral-current elastic differential cross section

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aguilar-Arevalo, A. ?A.; Brown, B. ?C.; Bugel, L.; Cheng, G.; Church, E. ?D.; Conrad, J. ?M.; Dharmapalan, R.; Djurcic, Z.; Finley, D. ?A.; Ford, R.; et al

    2015-01-08

    We report the measurement of the flux-averaged antineutrino neutral current elastic scattering cross section (d??-barN??-barN/dQ2) on CH2 by the MiniBooNE experiment using the largest sample of antineutrino neutral current elastic candidate events ever collected. The ratio of the antineutrino to neutrino neutral current elastic scattering cross sections and a ratio of the antineutrino neutral current elastic to antineutrino charged current quasi elastic cross sections are also presented.

  9. Measurement of the ratio Beta(D+ -> pi(0)l+nu) Beta(D+ -> (K)over-bar(o)l+nu)

    E-Print Network [OSTI]

    Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H.

    1993-08-01

    .7 +/- 1.4)%. From this ratio, the product of the ratio of Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, \\V(cd)/V(cs)\\2, and the form factors at q2 = 0, \\f+pi(0)/f+K(0)\\2, is determined to be \\V(cd)/V(cs)\\2\\f+pi(0)/f+K(0)\\2 = 0.085 +/- 0.027 +/- 0.014....

  10. Fakultt fr Informatik und Mathematik WS 2006/2007 Dr. Christoph Herrmann

    E-Print Network [OSTI]

    Passau, Universität

    : integer; a: ARRAY [0..1] OF integer; PROCEDURE f( p, q: integer ); BEGIN { pos 1 } q := q+5; { pos 2 } p := p+1; { pos 3 } q := q+2; { pos 4 } n := 9; { pos 5 } p := 1 { pos 6 } END {f}; BEGIN n := 0; a[0] := 0; a[1] := 0; { pos 0 } f( n, a[n] ) { pos 7 } END {aufg9}. Legen Sie für jede der drei

  11. Measurement of the antineutrino neutral-current elastic differential cross section

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aguilar-Arevalo, A. ?A.; Brown, B. ?C.; Bugel, L.; Cheng, G.; Church, E. ?D.; Conrad, J. ?M.; Dharmapalan, R.; Djurcic, Z.; Finley, D. ?A.; Ford, R.; Garcia, F. ?G.; Garvey, G. ?T.; Grange, J.; Huelsnitz, W.; Ignarra, C.; Imlay, R.; Johnson, R. ?A.; Karagiorgi, G.; Katori, T.; Kobilarcik, T.; Louis, W. ?C.; Mariani, C.; Marsh, W.; Mills, G. ?B.; Mirabal, J.; Moore, C. ?D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. ?C.; Ray, H.; Roe, B. ?P.; Russell, A. ?D.; Shaevitz, M. ?H.; Spitz, J.; Stancu, I.; Tayloe, R.; Van de Water, R. ?G.; Wascko, M. ?O.; White, D. ?H.; Wickremasinghe, D. ?A.; Zeller, G. ?P.; Zimmerman, E. ?D.

    2015-01-01

    We report the measurement of the flux-averaged antineutrino neutral current elastic scattering cross section (d??-barN??-barN/dQ2) on CH2 by the MiniBooNE experiment using the largest sample of antineutrino neutral current elastic candidate events ever collected. The ratio of the antineutrino to neutrino neutral current elastic scattering cross sections and a ratio of the antineutrino neutral current elastic to antineutrino charged current quasi elastic cross sections are also presented.

  12. NOTES AND DISCUSSIONS Note on thermal heating efficiency

    E-Print Network [OSTI]

    Rodriguez, Carlos

    DERIVATION We have a source of heat Q2 which is available at Kelvin temperature T2 . By this we mean, as was stressed long ago by Gibbs,4 that the source is capable of delivering that heat to a heat reservoir which. This is the conversion problem faced in every home, where one has heat from a gas, oil, wood, or coal flame but wants

  13. ?W H A T I S . . . an Automatic

    E-Print Network [OSTI]

    Rowland, Eric

    ?W H A T I S . . . an Automatic Sequence? Eric Rowland A sequence s(n)n0 is called k-automatic if s, hence the name "automatic sequence." For example, consider an automaton with only two states, q1 and q2, b, a, b, b, a, . . . is known as the Thue­Morse sequence. It is 2- automatic, since we are reading

  14. January 2011 Exam Number: ------------------------------

    E-Print Network [OSTI]

    Feeny, Brian

    D 4 ft 4 ft4 ft 3 ft #12;Q.2 - The composite shaft consists of a mid-section that includes the 1"-diameter A-36 steel solid shaft, and the 3"-diameter 6061-T6 aluminum tube with 0.25" thickness of twist of end C of the shaft relative to end D. The shaft is subjected to a torque of 12,000 lb-in. GAL

  15. CS 376 Programming with Abstract Data Types Solutions to Coursework 1

    E-Print Network [OSTI]

    Berger, Ulrich

    ! booleg The BOOLE-algebra Boole is given by Boole boole = B, T Boole = #t, F Boole = #f , not Boole (p) = :p, and Boole (p; q) = p ^ q, or Boole (p; q) = p _ q, for all p; q 2 B. The BOOLE-algebra Pow := fn 2 N j n 2 X and n 2 Y g X [ Y := fn 2 N j n 2 X or n 2 Y g (b) BOOLE := (S; where S := fbooleg

  16. Nuclear Shadowing and Antishadowing in a Unitarized BFKL Equation

    E-Print Network [OSTI]

    Jianhong Ruan; Zhenqi Shen; Wei Zhu

    2008-01-22

    The nuclear shadowing and antishadowing effects are explained by a unitarized BFKL equation. The $Q^2$- and $x$-variations of the nuclear parton distributions are detailed based on the level of the unintegrated gluon distribution. In particular, the asymptotical behavior of the unintegrated gluon distribution near the saturation limit in nuclear targets is studied. Our results in the nuclear targets are insensitive to the input distributions if the parameters are fixed by the data of a free proton.

  17. Xavier Janssen -Universit Libre de Bruxelles On behalf of H1 and ZEUS Collaborations

    E-Print Network [OSTI]

    on Multiparticle Dynamics Paraty, Brazil, 2nd-8th Sept., 2006 ISMD06, Paraty, Brazil, 02-08 Sept 2006 Xavier-proton cms energy x = xIP ; W = Q2 (1 x - 1) Main observable: Reduced cross section D r ISMD06, Paraty, Brazil, 02-08 Sept 2006 Xavier Janssen ­ p.2 #12;Selection Methods H1: Large Rapidity Gap Method · Gap

  18. Assignment 4 BS4a Actuarial Science Oxford MT 2011 IX A.4 Inflation, taxation and project appraisal

    E-Print Network [OSTI]

    Winkel, Matthias

    Assignment 4 ­ BS4a Actuarial Science ­ Oxford MT 2011 IX A.4 Inflation, taxation and project are indexed by reference to the value of a retail price index with a time lag of 8 months. The retail price index value in September 1996 was Q(-8/12) = 200 and in March 1997 was Q(-2/12) = 206. The issue price

  19. Jet Production in Polarized pp Collisions at RHIC

    E-Print Network [OSTI]

    C. A. Gagliardi; for the STAR Collaboration

    2008-08-06

    The STAR Collaboration has measured the longitudinal double-spin asymmetry for inclusive jet production in polarized p+p collisions at sqrt{s} = 200 GeV. The results set significant new constraints on the gluon polarization within the nucleon. Future measurements of asymmetries for di-jet production will provide direct access to the momentum dependence of the gluon polarization, Delta g(x,Q^2).

  20. Inclusive Electron Scattering from Nuclei at $x \\simeq 1$

    E-Print Network [OSTI]

    J. Arrington; P. Anthony; R. G. Arnold; E. J. Beise; J. E. Belz; P. E. Bosted; H. -J. Bulten; M. S. Chapman; K. P. Coulter; F. Dietrich; R. Ent; M. Epstein; B. W. Filippone; H. Gao; R. A. Gearhart; D. F. Geesaman; J. -O. Hansen; R. J. Holt; H. E. Jackson; C. E. Jones; C. E. Keppel; E. R. Kinney; S. Kuhn; K. Lee; W. Lorenzon; A. Lung; N. C. R. Makins; D. J. Margaziotis; R. D. McKeown; R. G. Milner; B. Mueller; J. Napolitano; J. Nelson; T. G. O'Neill; V. Papavassiliou; G. G. Petratos; D. H. Potterveld; S. E. Rock; M. Spengos; Z. M. Szalata; L. H. Tao; K. vanBibber; J. F. J. van den Brand; J. L. White; D. Winter; B. Zeidman

    1995-04-25

    The inclusive A(e,e') cross section for $x \\simeq 1$ was measured on $^2$H, C, Fe, and Au for momentum transfers $Q^2$ from 1-7 (GeV/c)$^2$. The scaling behavior of the data was examined in the region of transition from y-scaling to x-scaling. Throughout this transitional region, the data exhibit $\\xi$-scaling, reminiscent of the Bloom-Gilman duality seen in free nucleon scattering.

  1. Low-Friction Hard Coatings | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S.Leadership onProtonConcentrators FY13 Q2

  2. Probing with Penguins: A lattice calculation of the branching ratio for some of the exclusive modes of $b \\to s ?$

    E-Print Network [OSTI]

    K. C. Bowler

    1995-02-14

    We calculate the leading-order matrix element for exclusive decays of $b \\to s\\gamma$ in the quenched approximation of lattice QCD on a $24^3\\times48$ lattice at $\\beta=6.2$, using an O(a)-improved fermion action. The matrix element is used to extract the on-shell form factor $T_1(q^2=0)$ for $B \\to K^*\\gamma$ and $B_s \\to \\phi\\gamma$, using two different assumptions about the $q^2$ dependence of the form factors for these decays. For $B \\to K^*\\gamma$, $T_1(q^2=0)$ is determined to be $0.159^{+34}_{-33}\\pm 0.067$ or $0.124^{+20}_{-18} \\pm 0.022$ in the two cases. We find the results to be consistent (in the Standard Model) with the CLEO experimental branching ratio of $BR(B\\to K^*\\gamma) = (4.5 \\pm 1.5 \\pm 0.9) \\times 10^{-5}$.

  3. Measurement of Exclusive $?^0$ Electroproduction Structure Functions and their Relationship to Transversity GPDs

    E-Print Network [OSTI]

    CLAS Collaboration; I. Bedlinskiy; V. Kubarovsky; S. Niccolai; P. Stoler; K. P. Adhikari; M. Aghasyan; M. J. Amaryan; M. Anghinolfi; H. Avakian; H. Baghdasaryan; J. Ball; N. A. Baltzell; M. Battaglieri; R. P. Bennett; A. S. Biselli; C. Bookwalter; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; M. Contalbrigo; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; D. Doughty; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; J. A. Fleming; T. A. Forest; M. Garçon; N. Gevorgyan; K. L. Giovanetti; F. X. Girod; W. Gohn; R. W. Gothe; L. Graham; K. A. Griffioen; B. Guegan; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; C. Hanretty; D. Heddle; K. Hicks; M. Holtrop; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; H. S. Jo; K. Joo; D. Keller; M. Khandaker; P. Khetarpal; A. Kim; W. Kim; F. J. Klein; S. Koirala; A. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; N. D. Kvaltine; K. Livingston; H. Y. Lu; I. J. D. MacGregor; Y. Mao; N. Markov; D. Martinez; M. Mayer; B. McKinnon; C. A. Meyer; T. Mineeva; M. Mirazita; V. Mokeev; H. Moutarde; E. Munevar; C. Munoz Camacho; P. Nadel-Turonski; G. Niculescu; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; R. Paremuzyan; K. Park; S. Park; E. Pasyuk; S. Anefalos Pereira; E. Phelps; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; Y. Prok; D. Protopopescu; A. J. R. Puckett; B. A. Raue; G. Ricco; D. Rimal; M. Ripani; G. Rosner; P. Rossi; F. Sabatié; M. S. Saini; C. Salgado; N. Saylor; D. Schott; R. A. Schumacher; E. Seder; H. Seraydaryan; Y. G. Sharabian; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; S. Strauch; M. Taiuti; W. Tang; C. E. Taylor; Ye Tian; S. Tkachenko; M. Ungaro; M. F. Vineyard; A. Vlassov; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; L. B. Weinstein; D. P. Weygand; M. H. Wood; N. Zachariou; J. Zhang; Z. W. Zhao; I. Zonta

    2012-09-24

    Exclusive $\\pi^0$ electroproduction at a beam energy of 5.75 GeV has been measured with the Jefferson Lab CLAS spectrometer. Differential cross sections were measured at more than 1800 kinematic values in $Q^2$, $x_B$, $t$, and $\\phi_\\pi$, in the $Q^2$ range from 1.0 to 4.6 GeV$^2$,\\ $-t$ up to 2 GeV$^2$, and $x_B$ from 0.1 to 0.58. Structure functions $\\sigma_T +\\epsilon \\sigma_L, \\sigma_{TT}$ and $\\sigma_{LT}$ were extracted as functions of $t$ for each of 17 combinations of $Q^2$ and $x_B$. The data were compared directly with two handbag-based calculations including both longitudinal and transversity GPDs. Inclusion of only longitudinal GPDs very strongly underestimates $\\sigma_T +\\epsilon \\sigma_L$ and fails to account for $\\sigma_{TT}$ and $\\sigma_{LT}$, while inclusion of transversity GPDs brings the calculations into substantially better agreement with the data. There is very strong sensitivity to the relative contributions of nucleon helicity flip and helicity non-flip processes. The results confirm that exclusive $\\pi^0$ electroproduction offers direct experimental access to the transversity GPDs.

  4. Study of resonance formation in the mass region 1400 - 1500 MeV through the reaction $\\gamma\\gamma \\to K^{0}_{S} K^{\\pm} \\pi^{\\mp}$

    E-Print Network [OSTI]

    Achard, P; Aguilar-Benítez, M; Alcaraz, J; Alemanni, G; Allaby, James V; Aloisio, A; Alviggi, M G; Anderhub, H; Andreev, V P; Anselmo, F; Arefev, A; Azemoon, T; Aziz, T; Bagnaia, P; Bajo, A; Baksay, G; Baksay, L; Baldew, S V; Banerjee, S; Banerjee, Sw; Barczyk, A; Barillère, R; Bartalini, P; Basile, M; Batalova, N; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Bellucci, L; Berbeco, R; Berdugo, J; Berges, P; Bertucci, B; Betev, B L; Biasini, M; Biglietti, M; Biland, A; Blaising, J J; Blyth, S C; Bobbink, G J; Böhm, A; Boldizsar, L; Borgia, B; Bottai, S; Bourilkov, D; Bourquin, M; Braccini, S; Branson, J G; Brochu, F; Burger, J D; Burger, W J; Cai, X D; Capell, M; Cara Romeo, G; Carlino, G; Cartacci, A; Casaus, J; Cavallari, F; Cavallo, N; Cecchi, C; Cerrada, M; Chamizo-Llatas, M; Chang, Y H; Chemarin, M; Chen, A; Chen, G; Chen, G M; Chen, H F; Chen, H S; Chiefari, G; Cifarelli, L; Cindolo, F; Clare, I; Clare, R; Coignet, G; Colino, N; Costantini, S; Dela Cruz, B; Cucciarelli, S; De Asmundis, R; Deglon, P; Debreczeni, J; Degré, A; Dehmelt, K; Deiters, K; Della Volpe, D; Delmeire, E; Denes, P; De Notaristefani, F; De Salvo, A; Diemoz, M; Dierckxsens, M; Dionisi, C; Dittmar, M; Doria, A; Dova, M T; Duchesneau,; Duda, M; Echenard, B; Eline, A; El-Hage, A; El-Mamouni, H; Engler, A; Eppling, F J; Extermann, P; Falagán, M A; Falciano, S; Favara, A; Fay, J; Fedin, O; Felcini, M; Ferguson, T; Fesefeldt, H; Fiandrini, E; Field, J H; Filthaut, F; Fisher, P H; Fisher, W; Forconi, G; Freudenreich, K; Furetta, C; Galaktionov, Yu; Ganguli, S N; García-Abia, P; Gataullin, M; Gentile, S; Giagu, S; Gong, Z F; Grenier, G; Grimm, O; Grünewald, M W; Gupta, V K; Gurtu, A; Gutay, L J; Haas, D; Hatzifotiadou, D; Hebbeker, T; Hervé, A; Hirschfelder, J; Hofer, H; Hohlmann, M; Holzner, G; Hou, S R; Jin, B N; Jindal, P; Jones, L W; de Jong, P; Josa-Mutuberria, I; Kaur, M; Kienzle-Focacci, M N; Kim, 0J K; Kirkby, Jasper; Kittel, W; Klimentov, A; König, A C; Kopal, M; Koutsenko, V; Kraber, M; Krämer, R W; Krüger, A; Kunin, A; Ladrón de Guevara, P; Laktineh, I; Landi, G; Lebeau, M; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Le Coultre, P; Le Goff, J M; Leiste, R; Levtchenko, M; Levchenko, P; Li, C; Likhoded, S; Lin, C H; Lin, W T; Linde, Frank L; Lista, L; Liu, Z A; Lohmann, W; Longo, E; Lü, Y S; Luci, C; Luminari, L; Lustermann, W; Ma, W G; Malgeri, L; Malinin, A; Maña, C; Mans, J; Martin, J P; Marzano, F; Mazumdar, K; McNeil, R R; Mele, S; Merola, L; Meschini, M; Metzger, W J; Mihul, A; Milcent, H; Mirabelli, G; Mnich, J; Mohanty, G B; Muanza, G S; Muijs, A J M; Musy, M; Nagy, S; Natale, S; Napolitano, M; Nessi-Tedaldi, F; Newman, H; Nisati, A; Novák, T; Nowak, H; Ofierzynski, R; Organtini, G; Pal, I; Palomares, C; Paolucci, P; Paramatti, R; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, F; Pedace, M; Pensotti, S; Perret-Gallix, D; Piccolo, D; Pierella, F; Pieri, M; Pioppi, M; Piroué, P A; Pistolesi, E; Plyaskin, V; Pohl, M; Pozhidaev, V; Pothier, J; Prokofev, D; Prokofiev, D O; Rahal-Callot, G; Rahaman, M A; Raics, P; Raja, N; Ramelli, R; Rancoita, P G; Ranieri, R; Raspereza, A; Razis, P; Rembeczki, S; Ren, D; Rescigno, M; Reucroft, S; Riemann, S; Riles, K; Roe, B P; Romero, L; Rosca, A; Rosemann, C; Rosenbleck, C; Rosier-Lees, S; Roth, S; Rubio, J A; Ruggiero, G; Rykaczewski, H; Sakharov, A; Saremi, S; Sarkar, S; Salicio, J; Sánchez, E; Schäfer, C; Shchegelskii, V; Schopper, Herwig Franz; Schotanus, D J; Sciacca, C; Servoli, L; Shevchenko, S; Shivarov, N; Shoutko, V; Shumilov, E; Shvorob, A; Son, D; Souga, C; Spillantini, P; Steuer, M; Stickland, D P; Stoyanov, B; Strässner, A; Sudhakar, K; Sultanov, G G; Sun, L Z; Sushkov, S; Suter, H; Swain, J D; Szillási, Z; Tang, X W; Tarjan, P; Tauscher, L; Taylor, L; Tellili, B; Teyssier, D; Timmermans, C; Ting, Samuel C C; Ting, S M; Tonwar, S C; Tóth, J; Tully, C; Tung, K L; Ulbricht, J; Valente, E; Van de Walle, R T; Wadhwa, M; Wang, Q; Wang, X L; Wang, Z M; Weber, M; Wynhoff, S; Xia, L; Xu, Z Z; Yamamoto, J; Yang, B Z; Yang, C G; Yang, H J; Yang, M; Yeh, S C; Zalite, A; Zalite, Yu; Zhang, Z P; Zhao, J; Zhu, G Y; Zhu, R Y; Zhuang, H L; Zichichi, A; Zimmermann, B; Zöller, M

    2007-01-01

    The K^0_SK^+-\\pi-+ final state in two-photon collisions is studied with the L3 detector at LEP at e+e- centre-of-mass energies from 183 to 209 GeV with an integrated luminosity of 664.6 pb-1. The \\eta(1475) and f1(1420) mesons are observed and their contribution is separated by measuring the formation rates as a function of the photon virtuality Q2. The \\eta(1475) is found to be dominant for Q2 <= 0.01GeV2 and its two-photon width is measured to be 0.23+-0.05 (stat.) +-0.05 (sys.) keV. At higher Q2, the f1(1420) is formed and decays to K(892)K. The \\gamma\\gamma coupling and form factor parameters of this state are measured to be \\Gamma\\gamma\\gamma = 3.2+-0.6 (stat.) +-0.7 (sys.) keV and \\Lambda1 = 926+-72 (stat.) +-32 (sys.) MeV, respectively.

  5. PARAMETRIC EFFECTS OF ANTI-FOAM COMPOSITION, SIMULANT PROPERTIES AND NOBLE METALS ON THE GAS HOLDUP AND RELEASE OF A NON-NEWTONIAN WASTE SLURRY SIMULANT

    SciTech Connect (OSTI)

    Guerrero, H; Charles Crawford, C; Mark Fowley, M

    2008-08-07

    Gas holdup tests were performed in bench-scale and small-scale mechanically-agitated mixing systems at the Savannah River National Laboratory (SRNL) for a simulant of waste from the Hanford Tank 241-AZ-101. These featured additions of DOW Corning Q2-3183A anti-foam agent. Results indicated that this anti-foam agent (AFA) increased gas holdup in the waste simulant by about a factor of four and, counter-intuitively, that the holdup increased as the non-newtonian simulant shear strength decreased (apparent viscosity decreased). Such results raised the potential of increased flammable gas retention in Hanford Waste Treatment and Immobilization Plant (WTP) vessels mixed by air sparging and pulse-jet mixers (PJMs) during a Design Basis Event (DBE). Additional testing was performed to determine the effects of simulant properties, composition of alternate AFAs, and presence of trace noble metals. Key results are that: (1) Increased gas holdup resulting from addition of Q2-3183A is due to a decrease in surface tension that supports small bubbles which have low rise velocities. (2) Dow Corning 1520-US AFA shows it to be a viable replacement to Dow Corning Q2-3183A AFA. This alternative AFA, however, requires significantly higher dosage for the same anti-foam function. (3) Addition of noble metals to the AZ-101 waste simulant does not produce a catalytic gas retention effect with the AFA.

  6. Towards a resolution of the proton form factor problem: new electron and positron scattering data

    E-Print Network [OSTI]

    D. Adikaram; D. Rimal; L. B. Weinstein; B. Raue; P. Khetarpal; R. P. Bennett; J. Arrington; W. K. Brooks; K. P. Adhikari; A. V. Afanasev; M. J. Amaryan; M. D. Anderson; J. Ball; M. Battaglieri; I. Bedlinskiy; A. S. Biselli; J. Bono; S. Boiarinov; W. J. Briscoe; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; L. Colaneri; P. L. Cole; M. Contalbrigo; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; G. E. Dodge; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; P. Eugenio; G. Fedotov; S. Fegan; A. Filippi; J. A. Fleming; A. Fradi; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; W. Gohn; E. Golovatch; R. W. Gothe; K. A. Griffioen; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; N. Harrison; M. Hattawy; K. Hicks; M. Holtrop; S. M. Hughes; C. E. Hyde; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; D. Jenkins; H. Jiang; K. Joo; S. Joosten; M. Khandaker; W. Kim; A. Klein; F. J. Klein; S. Koirala; V. Kubarovsky; S. E. Kuhn; H. Y. Lu; I . J . D. MacGregor; N. Markov; M. Mayer; B. McKinnon; M. D. Mestayer; C. A. Meyer; M. Mirazita; V. Mokeev; R. A. Montgomery; C. I. Moody; H. Moutarde; A Movsisyan; C. Munoz Camacho; P. Nadel-Turonski; S. Niccolai; G. Niculescu; M. Osipenko; A. I. Ostrovidov; K. Park; E. Pasyuk; S. Pisano; O. Pogorelko; S. Procureur; Y. Prok; D. Protopopescu; A. J. R. Puckett; M. Ripani; A. Rizzo; G. Rosner; P. Rossi; F. Sabatié; D. Schott; R. A. Schumacher; Y. G. Sharabian; A. Simonyan; I. Skorodumina; E. S. Smith; G. D. Smith; D. I. Sober; N. Sparveris; S. Stepanyan; S. Strauch; V. Sytnik; M. Taiuti; Ye Tian; A. Trivedi; M. Ungaro; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; X. Wei; M. H. Wood; N. Zachariou; L. Zana; J. Zhang; Z. W. Zhao; I. Zonta; The CLAS Collaboration

    2014-11-25

    There is a significant discrepancy between the values of the proton electric form factor, $G_E^p$, extracted using unpolarized and polarized electron scattering. Calculations predict that small two-photon exchange (TPE) contributions can significantly affect the extraction of $G_E^p$ from the unpolarized electron-proton cross sections. We determined the TPE contribution by measuring the ratio of positron-proton to electron-proton elastic scattering cross sections using a simultaneous, tertiary electron-positron beam incident on a liquid hydrogen target and detecting the scattered particles in the Jefferson Lab CLAS detector. This novel technique allowed us to cover a wide range in virtual photon polarization ($\\varepsilon$) and momentum transfer ($Q^2$) simultaneously, as well as to cancel luminosity-related systematic errors. The cross section ratio increases with decreasing $\\varepsilon$ at $Q^2 = 1.45 \\text{ GeV}^2$. This measurement is consistent with the size of the form factor discrepancy at $Q^2\\approx 1.75$ GeV$^2$ and with hadronic calculations including nucleon and $\\Delta$ intermediate states, which have been shown to resolve the discrepancy up to $2-3$ GeV$^2$.

  7. Measurement of the target-normal single-spin asymmetry in quasielastic scattering from the reaction He3?(e,e')

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Y. -W.; Long, E.; Mihovilovi?, M.; Jin, G.; Allada, K.; Anderson, B.; Annand, J. R. M.; Averett, T.; Ayerbe-Gayoso, C.; Boeglin, W.; et al

    2015-10-22

    We report the first measurement of the target single-spin asymmetry, Ay, in quasi-elastic scattering from the inclusive reaction 3He? (e,e') on a 3He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A non-zero Ay can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the sub-structure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at Q2= 0.13, 0.46 and 0.97 GeV2. These measurements demonstrate, for the first time, that the 3Hemore »asymmetry is clearly non-zero and negative with a statistical significance of (8-10)?. Using measured proton-to-3He cross-section ratios and the effective polarization approximation, neutron asymmetries of -(1-3)% were obtained. The neutron asymmetry at high Q2 is related to moments of the Generalized Parton Distributions (GPDs). Our measured neutron asymmetry at Q2=0.97 GeV2 agrees well with a prediction based on two-photon exchange using a GPD model and in addition provides a new independent constraint on these distributions.« less

  8. Measurement of the Target-Normal Single-Spin Asymmetry in Quasi-Elastic Scattering from the Reaction $^3$He$^\\uparrow(e,e^\\prime)$

    E-Print Network [OSTI]

    Y. -W. Zhang; E. Long; M. Mihovilovi?; G. Jin; K. Allada; B. Anderson; J. R. M. Annand; T. Averett; W. Boeglin; P. Bradshaw; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. P. Chen; E. Chudakov; R. De Leo; X. Deng; A. Deur; C. Dutta; L. El Fassi; D. Flay; S. Frullani; F. Garibaldi; H. Gao; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; J. Gomez; O. Hansen; D. W. Higinbotham; T. Holmstrom; J. Huang; H. Ibrahim; C. W. de Jager; E. Jensen; X. Jiang; J. St. John; M. Jones; H. Kang; J. Katich; H. P. Khanal; P. King; W. Korsch; J. LeRose; R. Lindgren; H. -J. Lu; W. Luo; P. Markowitz; M. Meziane; R. Michaels; B. Moffit; P. Monaghan; N. Muangma; S. Nanda; B. E. Norum; K. Pan; D. Parno; E. Piasetzky; M. Posik; V. Punjabi; A. J. R. Puckett; X. Qian; Y. Qiang; X. Qiu; S. Riordan; G. Ron; A. Saha; B. Sawatzky; R. Schiavilla; B. Schoenrock; M. Shabestari; A. Shahinyan; S. Širca; R. Subedi; V. Sulkosky; W. A. Tobias; W. Tireman; G. M. Urciuoli; D. Wang; K. Wang; Y. Wang; J. Watson; B. Wojtsekhowski; Y. Ye; Z. Ye; X. Zhan; Y. Zhang; X. Zheng; B. Zhao; L. Zhu

    2015-02-09

    We report the first measurement of the target single-spin asymmetry, $A_y$, in quasi-elastic scattering from the inclusive reaction $^3$He$^{\\uparrow}(e,e^\\prime)$ on a $^3$He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A non-zero $A_y$ can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the sub-structure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at $Q^{2}=$ 0.13, 0.46 and 0.97 GeV$^{2}$. These measurements demonstrate, for the first time, that the $^3$He asymmetry is clearly non-zero and negative with a statistical significance of (8-10)$\\sigma$. Using measured proton-to-$^{3}$He cross-section ratios and the effective polarization approximation, neutron asymmetries of $-$(1-3)% were obtained. The neutron asymmetry at high $Q^2$ is related to moments of the Generalized Parton Distributions (GPDs). Our measured neutron asymmetry at $Q^2=0.97$ GeV$^2$ agrees well with a prediction based on two-photon exchange using a GPD model and thus provides a new, independent constraint on these distributions.

  9. First Determination of the Weak Charge of the Proton

    SciTech Connect (OSTI)

    Androic, D; Armstrong, D S; Asaturyan, A; Averett, T; Balewski, J; Beaufait, J; Beminiwattha, R S; Benesch, J; Benmokhtar, F; Birchall, J; Carlini, R D [JLAB; Cates, G D; Cornejo, J C; Covrig, S; Dalton, M M; Davis, C A; Deconinck, W; Diefenbach, J; Dowd, J F; Dunne, J A; Dutta, D; Duvall, W S; Elaasar, M; Falk, W R; Finn, J M; Forest, T; Gaskell, D; Gericke, M T. W.; Grames, J; Gray, V M; Grimm, K; Guo, F; Hoskins, J R; Johnston, K; Jones, D; Jones, M; Jones, R; Kargiantoulakis, M; King, P M; Korkmaz, E; Kowalski, S; Leacock, J; Leckey, J; Lee, A R; Lee, J H; Lee, L; MacEwan, S; Mack, D; Magee, J A; Mahurin, R; Mammei, J; Martin, J W; McHugh, M J; Meekins, D; Mei, J; Michaels, R; Micherdzinska, A; Mkrtchyan, A; Mkrtchyan, H; Morgan, N; Myers, K E; Narayan, A; Ndukum, L Z; Nelyubin, V; van Oers, W T H; Nuruzzaman,; Opper, A K; Page, S A; Pan, J; Paschke, K D; Phillips, S K; Pitt, M L; Poelker, M; Rajotte, J F; Ramsay, W D; Roche, J; Sawatzky, B; Seva, T; Shabestari, M H; Silwal, R; Simicevic, N; Smith, G R; Solvignon, P; Spayde, D T; Subedi, A; Subedi, R; Suleiman, R; Tadevosyan, V; Tobias, W A; Tvaskis, V; Waidyawansa, B; Wang, P; Wells, S P; Wood, S A; Yang, S; Young, R D; Zhamkochyan, S

    2013-10-01

    The Qweak experiment has measured the parity-violating asymmetry in polarized e-p elastic scattering at Q^2 = 0.025(GeV/c)^2, employing 145 microamps of 89% longitudinally polarized electrons on a 34.4cm long liquid hydrogen target at Jefferson Lab. The results of the experiment's commissioning run are reported here, constituting approximately 4% of the data collected in the experiment. From these initial results the measured asymmetry is A_e_p = -279 +- 35 (statistics) +- 31 (systematics) ppb, which is the smallest and most precise asymmetry ever measured in polarized e-p scattering. The small Q^2 of this experiment has made possible the first determination of the weak charge of the proton, Q^p_W, by incorporating earlier parity-violating electron scattering (PVES) data at higher Q^2 to constrain hadronic corrections. The value of Q^p_W obtained in this way is Q^p_W(PVES) = 0.064 +- 0.012, in good agreement with the Standard Model prediction of Q^p_W(SM) = 0.0710 +- 0.0007. When this result is further combined with the Cs atomic parity violation (APV) measurement, significant constraints on the weak charges of the up and down quarks can also be extracted. That PVES+APV analysis reveals the neutron's weak charge to be Q^n_W(PVES+APV) = -0.975 +- 0.010.

  10. Towards a Resolution of the Proton Form Factor Problem: New Electron and Positron Scattering Data

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adikaram, D.; Rimal, D.; Weinstein, L. B.; Raue, B.; Khetarpal, P.; Bennett, R.; Arrington, J.; Brooks, W.; Adhikari, K.; Afanasev, A.; et al

    2015-02-10

    There is a significant discrepancy between the values of the proton electric form factor, GpE, extracted using unpolarized and polarized electron scattering. Calculations predict that small two-photon exchange (TPE) contributions can significantly affect the extraction of GpE from the unpolarized electron-proton cross sections. We determined the TPE contribution by measuring the ratio of positron-proton to electron-proton elastic scattering cross sections using a simultaneous, tertiary electron-positron beam incident on a liquid hydrogen target and detecting the scattered particles in the Jefferson Lab CLAS detector. This novel technique allowed us to cover a wide range in virtual photon polarization (epsilon) and momentummore »transfer (Q2) simultaneously, as well as to cancel luminosity-related systematic errors. The cross section ratio increases with decreasing ? at Q2=1.45 GeV2. This measurement is consistent with the size of the form factor discrepancy at Q2?1.75 GeV2 and with hadronic calculations including nucleon and Delta intermediate states, which have been shown to resolve the discrepancy up to 2-3 GeV2.« less

  11. Spin Density Matrix Elements in Exclusive rho^0 Electroproduction on 1H and 2H Targets at 27.5 GeV Beam Energy

    E-Print Network [OSTI]

    HERMES Collaboration; A. Airapetian

    2009-06-13

    Spin Density Matrix Elements (SDMEs) describing the angular distribution of exclusive rho^0 electroproduction and decay are determined in the HERMES experiment with 27.6 GeV beam energy and unpolarized hydrogen and deuterium targets. Eight (fifteen) SDMEs that are related (unrelated) to the longitudinal polarization of the beam are extracted in the kinematic region 1 GeV^2 < Q^2 < 7 GeV^2, 3.0 GeV < W < 6.3 GeV, and -t < 0.4 GeV^2. Within the given experimental uncertainties, a hierarchy of relative sizes of helicity amplitudes is observed. Kinematic dependences of all SDMEs on Q^2 and t are presented, as well as the longitudinal-to-transverse rho^0 electroproduction cross section ratio as a function of Q^2. A small but statistically significant deviation from the hypothesis of s-channel helicity conservation is observed. An indication is seen of a contribution of unnatural-parity-exchange amplitudes; these amplitudes are naturally generated with a quark-exchange mechanism.

  12. Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to High Momentum Transfer

    E-Print Network [OSTI]

    Andrew J. R. Puckett

    2015-08-06

    The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electron-nucleon scattering. These form factors are functions of the squared four-momentum transfer $Q^2$ between the electron and the proton. The two main classes of observables of this reaction are the scattering cross section and polarization asymmetries, both of which are sensitive to the form factors in different ways. When considering large momentum transfers, double-polarization observables offer superior sensitivity to the electric form factor. This thesis reports the results of a new measurement of the ratio of the electric and magnetic form factors of the proton at high momentum transfer using the recoil polarization technique. A polarized electron beam was scattered from a liquid hydrogen target, transferring polarization to the recoiling protons. These protons were detected in a magnetic spectrometer which was used to reconstruct their kinematics, including their scattering angles and momenta, and the position of the interaction vertex. A proton polarimeter measured the polarization of the recoiling protons by measuring the azimuthal asymmetry in the angular distribution of protons scattered in CH$_2$ analyzers. The scattered electron was detected in a large-acceptance electromagnetic calorimeter in order to suppress inelastic backgrounds. The measured ratio of the transverse and longitudinal polarization components of the scattered proton is directly proportional to the ratio of form factors $G_E^p/G_M^p$. The measurements reported in this thesis took place at $Q^2=$5.2, 6.7, and 8.5 GeV$^2$, and represent the most accurate measurements of $G_E^p$ in this $Q^2$ region to date.

  13. Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to High Momentum Transfer

    SciTech Connect (OSTI)

    Andrew Puckett

    2010-02-01

    The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electronnucleon scattering. These form factors are functions of the squared four-momentum transfer Q2 between the electron and the proton. The two main classes of observables of this reaction are the scattering cross section and polarization asymmetries, both of which are sensitive to the form factors in different ways. When considering large f momentum transfers, double-polarization observables offer superior sensitivity to the electric form factor. This thesis reports the results of a new measurement of the ratio of the electric and magnetic form factors of the proton at high momentum transfer using the recoil polarization technique. A polarized electron beam was scattered from a liquid hydrogen target, transferring polarization to the recoiling protons. These protons were detected in a magnetic spectrometer which was used to reconstruct their kinematics, including their scattering angles and momenta, and the position of the interaction vertex. A proton polarimeter measured the polarization of the recoiling protons by measuring the azimuthal asymmetry in the angular distribution of protons scattered in CH2 analyzers. The scattered electron was detected in a large acceptance electromagnetic calorimeter in order to suppress inelastic backgrounds. The measured ratio of the transverse and longitudinal polarization components of the scattered proton is directly proportional to the ratio of form factors GpE=GpM. The measurements reported in this thesis took place at Q2 =5.2, 6.7, and 8.5 GeV2, and represent the most accurate measurements of GpE in this Q2 region to date.

  14. QCD corrections to $B \\to ?$ form factors from light-cone sum rules

    E-Print Network [OSTI]

    Yu-Ming Wang; Yue-Long Shen

    2015-06-01

    We compute perturbative corrections to $B \\to \\pi$ form factors from QCD light-cone sum rules with $B$-meson distribution amplitudes. Applying the method of regions we demonstrate factorization of the vacuum-to-$B$-meson correlation function defined with an interpolating current for pion, at one-loop level, explicitly in the heavy quark limit. The short-distance functions in the factorization formulae of the correlation function involves both hard and hard-collinear scales; and these functions can be further factorized into hard coefficients by integrating out the hard fluctuations and jet functions encoding the hard-collinear information. Resummation of large logarithms in the short-distance functions is then achieved via the standard renormalization-group approach. We further show that structures of the factorization formulae for $f_{B \\pi}^{+}(q^2)$ and $f_{B \\pi}^{0}(q^2)$ at large hadronic recoil from QCD light-cone sum rules match that derived in QCD factorization. In particular, we perform an exploratory phenomenological analysis of $B \\to \\pi$ form factors, paying attention to various sources of perturbative and systematic uncertainties, and extract $|V_{ub}|= \\left(3.05^{+0.54}_{-0.38} |_{\\rm th.} \\pm 0.09 |_{\\rm exp.}\\right) \\times 10^{-3}$ with the inverse moment of the $B$-meson distribution amplitude $\\phi_B^{+}(\\omega)$ determined by reproducing $f_{B \\pi}^{+}(q^2=0)$ obtained from the light-cone sum rules with $\\pi$ distribution amplitudes. Furthermore, we present the invariant-mass distributions of the lepton pair for $B \\to \\pi \\ell \

  15. University Downtown Center 67 Washington St., Binghamton

    E-Print Network [OSTI]

    Cho, Junghyun

    METERED PARKING Lot M2 Lot F3 LotH LotH LotI Lot F Lot G LotC Lot F1 Lot J LotJ1 LotJ2 LotJ3 Lot E1 Lot E Lot T LotO1 LotV Lot Q2 Lot 02 Lot Q1 Lot W Lot Y1 Lot R METERED PARKING METERED PARKING METERED PARKING METEREDPARKING Lot A Lot F2 LotY4 LotY5 Visitors Parking Lot K Lot B LotG Lot03 Lot04 Lot

  16. A phenomenological analysis of azimuthal asymmetries in unpolarized semi-inclusive deep inelastic scattering

    E-Print Network [OSTI]

    V. Barone; M. Boglione; J. O. Gonzalez Hernandez; S. Melis

    2015-04-03

    We present a phenomenological analysis of the cos-phi and cos-2phi asymmetries in unpolarized semi-inclusive deep inelastic scattering, based on the recent multidimensional data released by the COMPASS and HERMES Collaborations. In the TMD framework, valid at relatively low transverse momenta, these asymmetries arise from intrinsic transverse momentum and transverse spin effects, and from their correlations. The role of the Cahn and Boer-Mulders effects in both azimuthal moments is explored up to order 1/Q. As the kinematics of the present experiments is dominated by the low-Q^2 region, higher-twist contributions turn out to be important, affecting the results of our fits.

  17. A phenomenological analysis of azimuthal asymmetries in unpolarized semi-inclusive deep inelastic scattering

    E-Print Network [OSTI]

    Barone, V; Hernandez, J O Gonzalez; Melis, S

    2015-01-01

    We present a phenomenological analysis of the cos-phi and cos-2phi asymmetries in unpolarized semi-inclusive deep inelastic scattering, based on the recent multidimensional data released by the COMPASS and HERMES Collaborations. In the TMD framework, valid at relatively low transverse momenta, these asymmetries arise from intrinsic transverse momentum and transverse spin effects, and from their correlations. The role of the Cahn and Boer-Mulders effects in both azimuthal moments is explored up to order 1/Q. As the kinematics of the present experiments is dominated by the low-Q^2 region, higher-twist contributions turn out to be important, affecting the results of our fits.

  18. New measurements of the EMC effect in very light nuclei

    E-Print Network [OSTI]

    J. Seely; A. Daniel; D. Gaskell; J. Arrington; N. Fomin; P. Solvignon; R. Asaturyan; F. Benmokhtar; W. Boeglin; B. Boillat; P. Bosted; A. Bruell; M. H. S. Bukhari; M. E. Christy; B. Clasie; S. Connell; M. Dalton; D. Day; J. Dunne; D. Dutta; L. El Fassi; R. Ent; H. Fenker; B. W. Filippone; H. Gao; C. Hill; R. J. Holt; T. Horn; E. Hungerford; M. K. Jones; J. Jourdan; N. Kalantarians; C. E. Keppel; D. Kiselev; M. Kotulla; C. Lee; A. F. Lung; S. Malace; D. G. Meekins; T. Mertens; H. Mkrtchyan; T. Navasardyan; G. Niculescu; I. Niculescu; H. Nomura; Y. Okayasu; A. K. Opper; C. Perdrisat; D. H. Potterveld; V. Punjabi; X. Qian; P. E. Reimer; J. Roche; V. M. Rodriguez; O. Rondon; E. Schulte; E. Segbefia; K. Slifer; G. R. Smith; V. Tadevosyan; S. Tajima; L. Tang; G. Testa; R. Trojer; V. Tvaskis; W. F. Vulcan; F. R. Wesselmann; S. A. Wood; J. Wright; L. Yuan; X. Zheng

    2009-10-27

    New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from 2H, 3He, 4He, 9Be and 12C for 0.3Q^2 approximately 3-6 GeV^2. These data represent the first measurement of the EMC effect for 3He at large x and a significant improvement for 4He. The data do not support previous A-dependent or density-dependent fits to the EMC effect and suggest that the nuclear dependence of the quark distributions may depend on the local nuclear environment.

  19. Leading proton production in deep inelastic scattering at HERA

    E-Print Network [OSTI]

    ZEUS Collaboration

    2008-12-12

    The semi-inclusive reaction e+ p -> e+ X p was studied with the ZEUS detector at HERA using an integrated luminosity of 12.8 pb-1. The final-state proton, which was detected with the ZEUS leading proton spectrometer, carried a large fraction of the incoming proton energy, xL>0.32, and its transverse momentum squared satisfied pT^2proton system was 45proton production cross section and rates are presented as a function of xL, pT^2, Q^2 and the Bjorken scaling variable, x.

  20. Tests of Higgs boson compositeness through the HHH form factor

    E-Print Network [OSTI]

    Gounaris, G J

    2015-01-01

    We show how the $q^2$-dependence of the triple Higgs boson HHH form factor can reveal the presence of various types of new physics contributions, like new particles coupled to the Higgs boson or Higgs boson constituents, without directly observing them. We compare the effect of such new contributions to the one of higher order SM corrections to the point-like HHH coupling, due to triangle, 4-leg and s.e. diagrams. We establish simple analytic expressions describing accurately at high energy these SM corrections, as well as the examples of new physics contributions.

  1. Tests of Higgs boson compositeness through the HHH form factor

    E-Print Network [OSTI]

    G. J. Gounaris; F. M. Renard

    2015-10-14

    We show how the $q^2$-dependence of the triple Higgs boson HHH form factor can reveal the presence of various types of new physics contributions, like new particles coupled to the Higgs boson or Higgs boson constituents, without directly observing them. We compare the effect of such new contributions to the one of higher order SM corrections to the point-like HHH coupling, due to triangle, 4-leg and s.e. diagrams. We establish simple analytic expressions describing accurately at high energy these SM corrections, as well as the examples of new physics contributions.

  2. Numerical Implementation of lepton-nucleus interactions and its effect on neutrino oscillation analysis

    E-Print Network [OSTI]

    C. -M. Jen; A. Ankowski; O. Benhar; A. P. Furmanski; L. N. Kalousis; C. Mariani

    2014-10-13

    We discuss the implementation of the nuclear model based on realistic nuclear spectral functions in the GENIE neutrino interaction generator. Besides improving on the Fermi gas description of the nuclear ground state, our scheme involves a new prescription for $Q^2$ selection, meant to efficiently enforce energy momentum conservation. The results of our simulations, validated through comparison to electron scattering data, have been obtained for a variety of target nuclei, ranging from carbon to argon, and cover the kinematical region in which quasi elastic scattering is the dominant reaction mechanism. We also analyse the influence of the adopted nuclear model on the determination of neutrino oscillation parameters.

  3. Power Corrections and Renormalons in $e^+e^-$ Fragmentation Functions

    E-Print Network [OSTI]

    M. Dasgupta; B. R. Webber

    1996-08-21

    We estimate the power corrections (infrared renormalon contributions) to the coefficient functions for the transverse, longitudinal and asymmetric fragmentation functions in $e^+e^-$ annihilation, using a method based on the analysis of one-loop Feynman graphs containing a massive gluon. The leading corrections have the expected $1/Q^2$ behaviour, but the gluonic coefficients of the longitudinal and transverse contributions separately have strong singularities at small $x$, which cancel in their sum. This leads to $1/Q$ corrections to the longitudinal and transverse parts of the annihilation cross section, which cancel in the total cross section.

  4. The accuracy, stability and convergence characteristics of solution procedures for nonlinear structural analysis 

    E-Print Network [OSTI]

    Malek, Michele

    1974-01-01

    causes a large change in displacement, then the solution is likely to become unstable. However, if the structure stiffens as the load is increased then the solution will be stable. 28 aK NL, O fI q a. Unstabl. e Solution aK . o gq b. Stable... of stability is evident when the fourth-order Milne predictor-corrector equations are used to solve a simple first order linear differential equation. The Milne predictor equation is given by 33 q. =- q. + ?, dP [2g(q. ) ? g(q. , ) + 2g(q. )] 4 (III-30...

  5. Suction recirculation and its effects upon axial-flow pump power consumption 

    E-Print Network [OSTI]

    Prince, Tony M.

    1983-01-01

    1 Test Procedure Outline 2 Section and Pump Critical Flowrates and Speeds. 63 91 3 Power Coefficient and Reynolds Number Based on Cone Radius. 100 4 Power Coefficient and Reynolds Number Based on Surface Area. 101 5 Power Coefficient... Variation with NPSH with Q rl 54 Head Variation with NPSH with Q 2 . r2 55 Head Variation with NPSH with Q 3. r3' 120 128 129 130 131 134 135 136 CHAPTER I INTRODUCTION Pumps of different types are used to displace liquids from one location...

  6. Search for heavy long-lived multi-charged particles in pp collisions at ?s = 8  TeV using the ATLAS detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    None

    2015-08-08

    A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2012 at ?s = 8 TeV from pp collisions corresponding to an integrated luminosity of 20.3 fb-1 are examined. Particles producing anomalously high ionisation, consistent with long-lived massive particles with electric charges from |q| = 2e to |q| = 6e are searched for. No signal candidate events are observed, and 95 % confidence level cross-section upper limits are interpreted as lower mass limits for a Drell–Yan production model. The mass limits range between 660 and 785 GeV.

  7. Erratum to: Measurement of jet multiplicity distributions in tt-bar production in pp collisions at ?s = 7 TeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chatrchyan, S.

    2015-05-19

    Erratum to: Eur. Phys. J. C (2014) 74:3014 DOI 10.1140/epjc/s10052-014-3014-0 Table 4 was incorrectly captioned in the originally published version. The correct caption is ‘Normalised differential tt production cross section as a function of the number of additional jets with pT > 30 GeV in the lepton+jets channel. The statistical, systematic, and total uncertainties are also shown. The main experimental and model systematic uncertainties are displayed: JES and the combination of renormalization and factorisation scales, jet-parton matching threshold, and hadronisation (in the table “Q2/Match./Had.”)’.

  8. Fabrication of triangular nanobeam waveguide networks in bulk diamond using single-crystal silicon hard masks

    SciTech Connect (OSTI)

    Bayn, I.; Mouradian, S.; Li, L.; Goldstein, J. A.; Schröder, T.; Zheng, J.; Chen, E. H.; Gaathon, O.; Englund, Dirk; Lu, M.; Stein, A.; Ruggiero, C. A.; Salzman, J.; Kalish, R.

    2014-11-24

    A scalable approach for integrated photonic networks in single-crystal diamond using triangular etching of bulk samples is presented. We describe designs of high quality factor (Q?=?2.51?×?10{sup 6}) photonic crystal cavities with low mode volume (V{sub m}?=?1.062?×?(?/n){sup 3}), which are connected via waveguides supported by suspension structures with predicted transmission loss of only 0.05?dB. We demonstrate the fabrication of these structures using transferred single-crystal silicon hard masks and angular dry etching, yielding photonic crystal cavities in the visible spectrum with measured quality factors in excess of Q?=?3?×?10{sup 3}.

  9. Moments of the neutron g? structure function at intermediate Q²

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Solvignon-Slifer, Patricia H.

    2015-07-15

    We present new experimental results of the ³He spin structure function g? in the resonance region at Q² values between 1.2 and 3.0 (GeV/c)². Spin dependent moments of the neutron were then extracted.Our main result, the inelastic contribution to the neutron d? matrix element, was found to be small (Q²) = 2.4 (GeV/c)² and in agreement with the Lattice QCD calculation. The Burkhardt-Cottingham sum rule for ³He neutron was tested with the measured data and using the Wandzura-Wilczek relation for the low x unmeasured region.

  10. Cleanable and Hardcoat Coatings for Increased Durability of Silvered Polymeric Mirrors

    SciTech Connect (OSTI)

    Padiyath, Raghunath

    2013-04-01

    We have successfully developed coating formulations which significantly increasethe abrasion resistance of mirror films. We have demonstrated manufacturing scale-up of these films to full width andproduction volumes. Implementation of these films in commercial test sites is planned for Q2 2013(Abengoa, Gossamer Space Frames). This slide show outlines the background and objectives of the project, technical approach and results, and key lessons. It also presents the need and opportunity for reduction of costs for CSP and collectors. It also presents an approach for a large aperture parabolic trough collector with reflective film and a high concentration factor, including demonstration and results.

  11. Search for heavy long-lived multi-charged particles in pp collisions at $$\\sqrt{s}=8$$ s = 8  TeV using the ATLAS detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aad, G.

    2015-08-08

    A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2012 at s?=8 TeV from pp collisions corresponding to an integrated luminosity of 20.3 fb-1are examined. Particles producing anomalously high ionisation, consistent with long-lived massive particles with electric charges from |q| = 2e to |q| = 6e are searched for. No signal candidate events are observed, and 95 % confidence level cross-section upper limits are interpreted as lower mass limits for a Drell–Yan production model. The mass limits range between 660 and 785 GeV.

  12. Spin Sum Rules and the Strong Coupling Constant at large distance

    E-Print Network [OSTI]

    A. Deur

    2009-06-23

    We present recent results on the Bjorken and the generalized forward spin polarizability sum rules from Jefferson Lab Hall A and CLAS experiments, focusing on the low $Q^2$ part of the measurements. We then discuss the comparison of these results with Chiral Perturbation theory calculations. In the second part of this paper, we show how the Bjorken sum rule with its connection to the Gerasimov-Drell-Hearn sum, allows us to conveniently define an effective coupling for the strong force at all distances.

  13. A computer-aided approach to a sediment budget analysis 

    E-Print Network [OSTI]

    Capodice, Anne Marie

    1985-01-01

    and charts to expedite calculations. The fourth method is an empirical relation of gross longshore transport rates developed by Galvin (1972). Q = (2*10 ) H b (5) where: Q ? Longshore transport in cy/yr H ? Breaking wave height in ft 5 10 This relation... Shoreline 4. 2 Sensitivity Tests 48 62 TEST RESULTS 67 5. 1 General Discussion 5. 2 Sensitivity Tests' Results 67 68 VI REVISED SEDIMENT BUDGET 96 6. 1 Introduction 6. 2 Reach Details 96 98 VII CONCLUSIONS 105 REFERENCES 108 Vi Table...

  14. Global analysis of proton elastic form factor data with two-photon exchange corrections

    SciTech Connect (OSTI)

    J. Arrington; W. Melnitchouk; J. A. Tjon

    2007-09-01

    We use the world's data on elastic electron-proton scattering and calculations of two-photon exchange effects to extract corrected values of the proton's electric and magnetic form factors over the full Q^2 range of the existing data. Our analysis combines the corrected Rosenbluth cross section and polarization transfer data, and is the first extraction of G_Ep and G_Mp including explicit two-photon exchange corrections and their associated uncertainties. In addition, we examine the angular dependence of the corrected cross sections, and discuss the possible nonlinearities of the cross section as a function of epsilon.

  15. Experimental study of isovector spin sum rules

    SciTech Connect (OSTI)

    Alexandre Deur; Peter Bosted; Volker Burkert; Donald Crabb; Kahanawita Dharmawardane; Gail Dodge; Tony Forest; Keith Griffioen; Sebastian Kuhn; Ralph Minehart; Yelena Prok

    2008-02-04

    We present the Bjorken integral extracted from Jefferson Lab experiment EG1b for $0.05<2.92$ GeV$^2$. The integral is fit to extract the twist-4 element $f_{2}^{p-n}$ which is large and negative. Systematic studies of this higher twist analysis establish its legitimacy at $Q^{2}$ around 1 GeV$^{2}$. We also extracted the isovector part of the generalized forward spin polarizability $\\gamma_{0}$. Although this quantity provides a robust test of Chiral Perturbation Theory, our data disagree with the calculations.

  16. Reply to Comment on "High-Precision Determination of the Electric and Magnetic Form Factors of the Proton"

    E-Print Network [OSTI]

    J. C. Bernauer; P. Achenbach; C. Ayerbe Gayoso; R. Böhm; D. Bosnar; L. Debenjak; M. O. Distler; L. Doria; A. Esser; H. Fonvieille; J. M. Friedrich; J. Friedrich; M. Gómez Rodríguez de la Paz; M. Makek; H. Merkel; D. G. Middleton; U. Müller; L. Nungesser; J. Pochodzalla; M. Potokar; S. Sánchez Majos; B. S. Schlimme; S. Širca; Th. Walcher; M. Weinriefer

    2011-08-17

    In arXiv:1108.3058v1 [nucl-ex], Arrington criticizes the Coulomb corrections we applied in the analysis of high precision form factor data (see Phys.Rev.Lett.105:242001, 2010, arXiv:1007.5076v3 [nucl-ex]). We show, by comparing different calculations cited in the Comment, that the criticism of the Comment neglects the large uncertainty of "more modern" TPE corrections. This uncertainty has also been seen in recent polarized measurements. We rerun our analysis using one of these calculations. The results show that the Comment exaggerates the quantitative effect at small Q^2.

  17. Deeply Virtual Compton Scattering off the neutron

    E-Print Network [OSTI]

    M. Mazouz; A. Camsonne; C. Muñoz Camacho; for the Jefferson Lab Hall A collaboration

    2007-12-12

    The present experiment exploits the interference between the Deeply Virtual Compton Scattering (DVCS) and the Bethe-Heitler processes to extract the imaginary part of DVCS amplitudes on the neutron and on the deuteron from the helicity-dependent D$({\\vec e},e'\\gamma)X$ cross section measured at $Q^2$=1.9 GeV$^2$ and $x_B$=0.36. We extract a linear combination of generalized parton distributions (GPDs) particularly sensitive to $E_q$, the least constrained GPD. A model dependent constraint on the contribution of the up and down quarks to the nucleon spin is deduced.

  18. An in situ geophone-calibration method for broadband amplitude and phase determination 

    E-Print Network [OSTI]

    Peoples, Christopher James

    1993-01-01

    personal computer with a high- speed, high-resolution analog-to-digital (A/D) conversion card. Between the A/D card and the geophone is a high input-impedance, unity-gain amplifier/pulse controller. Sophisticated data-acquisition software automatically... displacement (q, and q~) from their equilibrium positions (Q, and Q2) when driven by the ground are: 13 Force acting at center-of-mass of m, : de d F +Fs +Fs, = 0 =at2 ? '+Ps ? (Cs-I, )+k2(92-9, ) Force acting at center-of-mass of m, : F +F& +F -F& -F...

  19. Nuclear enhanced power corrections to DIS structure functions

    E-Print Network [OSTI]

    Xiaofeng Guo; Jianwei Qiu; Wei Zhu

    2001-10-03

    We calculate nuclear enhanced power corrections to structure functions measured in deeply inelastic lepton-nucleus scattering in Quantum Chromodynamics (QCD). We find that the nuclear medium enhanced power corrections at order of $O(\\alpha_s/Q^2)$ enhance the longitudinal structure function $F_L$, and suppress the transverse structure function $F_1$. We demonstrate that strong nuclear effects in $\\sigma_A/\\sigma_D$ and $R_A/R_D$, recently observed by HERMES Collaboration, can be explained in terms of the nuclear enhanced power corrections.

  20. Deriving the quark condensate within a finite Fermi system from the generating functional of chiral perturbation theory

    E-Print Network [OSTI]

    Mariana Kirchbach; Andreas Wirzba

    1996-11-01

    The generating functional of heavy baryon chiral perturbation theory at order O(Q^2) in the mean field approximation (with a pseudoscalar source coupling which is consistent with the PCAC-Ward identities on the current quark level) has been exploited to derive Migdal's in--medium pion propagator. It is shown that the prediction for the density dependence of the quark condensate obtained on the composite hadron level by embedding PCAC within the framework of Migdal's approach to finite Fermi systems is identical to that resulting from QCD.

  1. Deriving the quark condensate within a finite Fermi system from the generating functional of chiral perturbation theory

    E-Print Network [OSTI]

    Kirchbach, M; Kirchbach, Mariana; Wirzba, Andreas

    1996-01-01

    The generating functional of heavy baryon chiral perturbation theory at order {\\cal O}(Q^2) in the mean field approximation (with a pseudoscalar source coupling which is consistent with the PCAC-Ward identities on the current quark level) has been exploited to derive Migdal's in--medium pion propagator. It is shown that the prediction for the density dependence of the quark condensate obtained on the composite hadron level by embedding PCAC within the framework of Migdal's approach to finite Fermi systems is identical to that resulting from QCD.

  2. Short Range Correlations in Nuclei at Large xbj through Inclusive Quasi-Elastic Electron Scattering

    SciTech Connect (OSTI)

    Ye, Zhihong [UVA

    2013-12-01

    The experiment, E08-014, in Hall-A at Jefferson Lab aims to study the short-range correlations (SRC) which are necessary to explain the nuclear strength absent in the mean field theory. The cross sections for 2H, 3He, 4He, 12C, 40Ca and 48Ca, were measured via inclusive quasi-elastic electron scattering from these nuclei in a Q2 range between 0.8 and 2.8 (GeV/c)^2 for x>1. The cross section ratios of heavy nuclei to 2H were extracted to study two-nucleon SRC for 1

  3. Double vector meson production in the International Linear Collider

    E-Print Network [OSTI]

    F. Carvalho; V. P. Goncalves; B. D. Moreira; F. S. Navarra

    2015-04-17

    In this paper we study double vector meson production in $\\gamma \\gamma$ interactions at high energies and, using the color dipole picture, estimate the main observables which can be probed at the International Linear Collider (ILC). The total $\\gamma (Q_1^2) + \\gamma (Q_2^2) \\rightarrow V_1 + V_2$ cross-sections for $V_i = \\rho$, $\\phi$, $J/\\psi$ and $\\Upsilon$ are computed and the energy and virtuality dependencies are studied in detail. Our results demonstrate that the experimental analysis of this process is feasible at the ILC and it can be useful to constrain the QCD dynamics at high energies.

  4. Vector Norms and Matrix Norms 6.1 Normed Vector Spaces

    E-Print Network [OSTI]

    Gallier, Jean

    R, if , 0, then p p + q q . () (2) For any two vectors u, v 2 E, we have nX i=1 |uivi| kukp kvkq . () #12;6.1. NORMED VECTOR SPACES 377 For p > 1 and 1/p + 1/q = 1, the inequality nX i=1 |uivi| nX i=1 |ui|p 1/p nX i=1 |vi|q 1/q is known as H¨older's inequality. For p = 2, it is the Cauchy

  5. Multipole Extraction: A novel, model independent method

    E-Print Network [OSTI]

    E. Stiliaris; C. N. Papanicolas

    2007-03-20

    A novel method for extracting multipole amplitudes in the nucleon resonance region from electroproduction data is presented. The method is based on statistical concepts and it relies heavily on Monte Carlo and simulation techniques; it produces precise identification and determination of the contributing multipole amplitudes in the resonance region and for the first time a rigorous determination of the associated experimental uncertainty. The results are demonstrated to be independent of any model bias. The method is applied in the reanalysis of the $Q^{2}=0.127 GeV^2/c^2$ Bates and Mainz $N\\to \\Delta$ data.

  6. Chiral solitons in nuclei: Electromagnetic form factors

    E-Print Network [OSTI]

    Jason R. Smith; Gerald A. Miller

    2004-09-08

    We calculate the electromagnetic form factors of a bound proton. The Chiral Quark-Soliton model provides the quark and antiquark substructure of the proton, which is embedded in nuclear matter. This procedure yields significant modifications of the form factors in the nuclear environment. The sea quarks are almost completely unaffected, and serve to mitigate the valence quark effect. In particular, the ratio of the isoscalar electric to the isovector magnetic form factor decreases by 20% at Q^2=1 GeV^2 at nuclear density, and we do not see a strong enhancement of the magnetic moment.

  7. Dormitories - 64 

    E-Print Network [OSTI]

    Unknown

    2009-01-01

    ORDER RELATIONS AND PRIOR DISTRIBU 'IONS IN 1:-IE ESTXYJiTION OF MULTIVARIATE NOPSLAL PARAI'E&iTiS NI~N PARTIAL DATA A Thesis by ABDUL MAJID HA?ZA AL-NASZR Submitt d o the Grad. nate College oi' Texas UM Univ rsity in partial fu' fillment . f... Suppose we also have n observations X from N (O, o ), with like- 2 lihood function L . Denote, by, a the maximum likelihood estimate of o22 based. on the n observations. Therefore: 3 n 3 22 n3 1 2Q' (2 7) Hecalling the definitions of the metr. 'x d...

  8. Measurement of Angular Distributions and $R = \\sigma_{L}/\\sigma_{T}$ in Diffractive Electroproduction of $\\rho^{0}$ Mesons

    E-Print Network [OSTI]

    Ackerstaff, K; Akopov, N Z; Amarian, M; Aschenauer, E C; Avakian, H; Avakian, R; Avetisian, A; Bains, B; Beckmann, M; Belostotskii, S; Belz, J E; Benisch, T; Bernreuther, S; Bianchi, N; Blanchard, S; Blouw, J; Böttcher, Helmut B; Borisov, A; Brack, J; Braun, B; Bray, B; Brückner, W; Brüll, A; Bruins, E E W; Bulten, H J; Capitani, G P; Carter, P; Cisbani, E; Court, G R; Delheij, P P J; De Sanctis, E; De Schepper, D; Devitsin, E G; De Witt-Huberts, P K A; Düren, M; Dvoredsky, A P; Elbakian, G M; Emerson, J; Fantoni, A; Feshchenko, A; Ferstl, M; Fiedler, K; Filippone, B W; Fischer, H; Fox, B; Franz, J; Frullani, S; Funk, M A; Gärber, Y; Gagunashvili, N D; Galumian, P I; Gao, H; Garibaldi, F; Gavrilov, G E; Geiger, P; Karibian, V; Golendukhin, A; Graw, G; Grebenyuk, O; Green, P W; Greeniaus, L G; Grosshauser, C; Gute, A; Gyurjyan, V; Haas, J P; Haeberli, W; Häusser, O; Hansen, J O; Hasch, D; Henderson, R; Henkes, T; Hertenberger, R; Holler, Y; Holt, R J; Ihssen, H; Iodice, M; Izotov, A A; Jackson, H E; Jgoun, A; Jones, C; Kaiser, R; Kinney, E R; Kirsch, M; Kiselev, A; Kitching, P; Königsmann, K C; Kolstein, M; Kolster, H; Korsch, W; Kozlov, V; Kramer, L H; Krause, B; Krivokhizhin, V G; Kückes, M; Kyle, G S; Lachnit, W A; Lorenzon, W; Lung, A; Makins, N C R; Manaenkov, S I; Martens, F K; Martin, J W; Mateos, A; McIlhany, K; McKeown, R D; Meissner, F; Menden, F; Mercer, D; Metz, A; Meyners, N; Miklukho, O; Miller, C A; Miller, M A; Milner, R; Mitsyn, V; Most, A; Mozzetti, R; Muccifora, V; Nagaitsev, A P; Naryshkin, Yu; Nathan, A M; Neunreither, F; Niczyporuk, J M; Nowak, Wolf-Dieter; Nupieri, M; Oelwein, P; Ogami, H; O'Neill, T G; Openshaw, R; Ouyang, J; Pate, S F; Pitt, M L; Poolman, H R; Potashov, S Yu; Potterveld, D H; Rakness, G; Redwine, R P; Reolon, A R; Ristinen, R; Rith, K; Roper, G; Roloff, H O; Rossi, P; Ruh, M; Ryckbosch, D; Sakemi, Y; Savin, I A; Schüler, K P; Schwind, A; Shibata, T A; Shin, T; Simon, A; Sinram, K; Smythe, W R; Sowinski, J; Spengos, M; Steffens, E; Stenger, J; Stewart, J; Stock, F; Stösslein, U; Sutter, M F; Tallini, H A; Taroian, S P; Terkulov, A R; Thiessen, D M; Tipton, B; Trudel, A; Tytgat, M; Urciuoli, G M; Van den Brand, J F J; van der Steenhoven, G; Van de Vyver, R; Vetterli, Martin C; Vincter, M G; Volk, E; Wander, W; Welch, T P; Williamson, S E; Wise, T; Zapfe, K; Zohrabyan, H G

    2000-01-01

    Production and decay angular distributions were extracted from measurementsof exclusive electroproduction of the rho^0(770) meson over a range in thevirtual photon negative four-momentum squared 0.5 pi+ pi- decay yieldedmeasurements of eight elements of the spin-density matrix, including one thathad not been measured before. The results are consistent with the dominance ofhelicity-conserving amplitudes and natural parity exchange. The improvedprecision achieved at 47 GeV,reveals evidence for an energy dependence in the ratio R of the longitudinal totransverse cross sections at constant Q^2.

  9. BULLETIN (New Series) OF THE AMERICAN MATHEMATICAL SOCIETY

    E-Print Network [OSTI]

    Kantor, William M.

    (/, Z[l/p]) denote the intersection PSO(/, Qp)'nPGL(n, Z[l/p]) within PGL(n,Qp), and similarly PGO(/, Z- (i) Let = eg, &7,ci6,66*^6* or as, and let A be the affine building of PSO(/,Q2). Here T can be any and reflections. (ii) Let = &5,e6, or b'e = Xax ? + ^x h a n ( l let A be the building of PSO(/,Q3). The group rm

  10. Applications of algebraic geometry to object/image recognition 

    E-Print Network [OSTI]

    Abbott, Kevin Toney

    2009-06-02

    (the object/image relations) for the Qi to be a generalized weak perspective projection of the Pi. Recall that we view our object space Ok as a subvariety of P( n 4)?1 R and our image space Ik as a subvariety of P( n 3)?1 R . As such, we want to view.... Two configurations P1,P2,...,Pk and Q1,Q2,...,Qk of points in Rn have the same shape if there is a similarity transformation T ?Sim(n) such that T(Pi) = Qi for i = 1,...,k. The shape of a configuration of k points in Rn is its equivalence class under...

  11. Analytic calculation of 1-jettiness in DIS at O (?s)

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kang, Daekyoung; Los Alamos National Lab.; Lee, Christopher; Stewart, Iain W.

    2014-11-24

    We present an analytic O(?s) calculation of cross sections in deep inelastic scattering (DIS) dependent on an event shape, 1-jettiness, that probes final states with one jet plus initial state radiation. This is the first entirely analytic calculation for a DIS event shape cross section at this order. We present results for the differential and cumulative 1-jettiness cross sections, and express both in terms of structure functions dependent not only on the usual DIS variables x, Q 2 but also on the 1-jettiness ?. Combined with previous results for log resummation, predictions are obtained over the entire range of themore »1-jettiness distribution.« less

  12. Distribution of Energy-Momentum in a Schwarzschild-Quintessence Space-time Geometry

    E-Print Network [OSTI]

    Irina Radinschi; Theophanes Grammenos; Andromahi Spanou

    2012-04-07

    An analysis of the energy-momentum localization for a four-dimensional\\break Schwarzschild black hole surrounded by quintessence is presented in order to provide expressions for the distributions of energy and momentum. The calculations are performed by using the Landau-Lifshitz and Weinberg energy-momentum complexes. It is shown that all the momenta vanish, while the expression for the energy depends on the mass $M$ of the black hole, the state parameter $w_{q}$ and the normalization factor $c$. The special case of $w_{q}=-2/3$ is also studied, and two limiting cases are examined.

  13. Improving the quality of multiple sequence alignment 

    E-Print Network [OSTI]

    Lu, Yue

    2009-05-15

    .0........................................................................................ 78 4.4 Average SPS scores (in %) of NRAlign on HOMSTRAD ........................ 79 4.5 Average CS scores (in %) of NRAlign on HOMSTRAD.......................... 80 4.6 Average Q(2) scores (in %) of NRAlign on PREFAB 4... Page 2.1 Average SPS and CS scores (in %) of PSAlign on BAliBASE 2.01......... 30 2.2 Average Q scores (in %) of PSAlign on PREFAB 4.0 .............................. 31 2.3 Average Q scores (in %) of PSAlign on SABmark 1...

  14. Lattice Results on the Connected Neutron Charge Radius

    E-Print Network [OSTI]

    Alfred Tang; Walter Wilcox; Randy Lewis

    2003-09-30

    We describe a calculation using quenched lattice QCD of the connected part of the neutron electric form factor for momentum transfers in the range $0.3 {\\rm GeV^2} \\stackrel{<}{\\sim} -q^2 \\stackrel{<}{\\sim} 1.0 {\\rm GeV^2}$. We extract the implied charge radius using a Galster parameterization and consider various ways of extrapolating the neutron charge radius value to the chiral limit. We find that the measured charge radii may be reconciled to experiment by standard phenomenology and lowest or next to lowest order contributions from chiral perturbation theory.

  15. Double vector meson production in the International Linear Collider

    E-Print Network [OSTI]

    Carvalho, F; Moreira, B D; Navarra, F S

    2015-01-01

    In this paper we study double vector meson production in $\\gamma \\gamma$ interactions at high energies and, using the color dipole picture, estimate the main observables which can be probed at the International Linear Collider (ILC). The total $\\gamma (Q_1^2) + \\gamma (Q_2^2) \\rightarrow V_1 + V_2$ cross-sections for $V_i = \\rho$, $\\phi$, $J/\\psi$ and $\\Upsilon$ are computed and the energy and virtuality dependencies are studied in detail. Our results demonstrate that the experimental analysis of this process is feasible at the ILC and it can be useful to constrain the QCD dynamics at high energies.

  16. A model study of the effect of bucket dentations on a ski-jump spillway jet: with a mathematical analysis of critical bucket radius determination. 

    E-Print Network [OSTI]

    Gladwell, John Stuart

    1961-01-01

    of 8s 8s reduction of velocity or increase of depth from point Qlto point Q2 was also a function of R; however, it should be noticed that the function 8V ttg PC)i ~1 g t' 8s Actually, however, the basic assumption made does not apply. That is... the darn to a point 1, 2, 14 where there is no danger to the dam due to erosion. ' ' The shape is such that the water falls with much diminished energy. Economy and safety are two of its advantages, if it is used in the proper 3 xnanner. A few...

  17. CONFIDENTIAL -encanadacgpss2013reports.xlsx All Respondents (No Filter) CANADIAN GRADUATE AND PROFESSIONAL STUDENT SURVEY -2013 NATIONAL DATA -ALL CANADA

    E-Print Network [OSTI]

    Wang, Hao "Howard"

    Responses 51,621 Valid 51,634 Total Responses 51,682 Total 51,682 Q2: In what disciplinary area are you.3% 32,705 3.0% 1,559 6.5% 3,358 32.4% 16,720 30.2% 15,619 Valid Responses 51,682 Valid 51,682 Total Responses 51,682 Total 51,682 SECTION 1 - EDUCATIONAL STATUS Q1: At which degree level are you currently

  18. Erratum to: Measurement of jet multiplicity distributions in tt ¯ production in pp collisions at ?s = 7 TeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chatrchyan, S.

    2015-05-19

    Erratum to: Eur. Phys. J. C (2014) 74:3014 DOI 10.1140/epjc/s10052-014-3014-0 Table 4 was incorrectly captioned in the originally published version. The correct caption is ‘Normalised differential tt production cross section as a function of the number of additional jets with pT > 30 GeV in the lepton+jets channel. The statistical, systematic, and total uncertainties are also shown. The main experimental and model systematic uncertainties are displayed: JES and the combination of renormalization and factorisation scales, jet-parton matching threshold, and hadronisation (in the table “Q2/Match./Had.”)’.

  19. Lowest Order Hadronic Contribution to the Muon g-2

    E-Print Network [OSTI]

    Christopher Aubin; Tom Blum

    2005-09-20

    We present the most recent lattice results for the lowest-order hadronic contribution to the muon anomalous magnetic moment using 2+1 flavor improved staggered fermions. A precise fit to the low-q^2 region of the vacuum polarization is necessary to accurately extract the muon g-2. To obtain this fit, we use staggered chiral perturbation theory with the inclusion of the vector particles as resonances, to evaluate the vacuum polarization. We discuss the preliminary fit results and attendant systematic uncertainties, paying particular attention to the relative contributions of the pions and vector mesons.

  20. Initial-state splitting kernels in cold nuclear matter

    E-Print Network [OSTI]

    Ovanesyan, Grigory; Vitev, Ivan

    2015-01-01

    We derive medium-induced splitting kernels for energetic partons that undergo interactions in dense QCD matter before a hard-scattering event at large momentum transfer $Q^2$. Working in the framework of the effective theory ${\\rm SCET}_{\\rm G}\\,$, we compute the splitting kernels beyond the soft gluon approximation. We present numerical studies that compare our new results with previous findings. We expect the full medium-induced splitting kernels to be most relevant for the extension of initial-state cold nuclear matter energy loss phenomenology in both p+A and A+A collisions.

  1. Rotordynamic instability: nonlinear modeling and analysis 

    E-Print Network [OSTI]

    Cooper, Charles Ira

    1998-01-01

    ~sin~Pcos ~P~Q)(o'(z )) = (0) 35 The (N+1) equation: m (a )r[c4'](a )0 + 2m 0 (a )r[M](a ) ~m(-R~~r" + rp~B + cos ~(~0 + 2~Rcos~P~r~B + R psin ~(~0 + ? sin~(sin(2~/+6, )~P + R~~rg + cos~P~Q + 2~r~0r~ + 2~Rcos~P~OP 1 ? 2E~sin~P~r~B~P ? sin2~P...

  2. Modeling the current behavior of the digital BiCMOS gate 

    E-Print Network [OSTI]

    Tang, Zhilong

    1995-01-01

    to be treated very carefully as it fundmentally determines the transistor sPeed. Equation (2. 5) gives the definition of Qb, [10]c Qbc = Tr(1 + ATF) ? ' = rI(1 + ATF)i, (2. 5) Where: ATF = XTF( )' bc+ hF qb = ? [1+ (1+ 4q ) ] 2 (2 0) (2 7) C B ibto... capacitance. Qb, is associated with reference emitter current source ib?and Qb, is associated with reference collector current source ib, . ib?ib, are defined in Equation (2. 2) and (2. 3) [10], i, , = Is(e~w ? 1) ~V ibc = Is(eca c ? 1) (2. 2) (2. 3...

  3. Nuclear magnetic relaxation of a three spin asymmetric molecule in a liquid 

    E-Print Network [OSTI]

    Kattawar, George Williford

    1961-01-01

    is the quaternion ~ ( o(/~) + g ~ Q &/2) &Z) The quantity C is a unit vector in the direction of the axis of the rotation, having components 19 C, =~a'C d', C, = ~s ~~ ~ &~=~+. A quaternion can be considered to be the sum of a scalar and a vector, (a + bC... for the degree of MASTER OF SCIENCE August 1961 Major Sub)ect: Physics NUCLEAR MAGNETIC RELAXATION OF A THREE SPIN ASYMMETRIC MOLECULE IN A LIQUID A Thesis By George W. Kattawar Approved as to style and content by: ), , i, ? a rman o Comm ttee g-C e...

  4. 024015cov.PDF

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby a contractor of the(Technical Report)Rayf . ./lp q2-4015

  5. Quarterly SSP Experiment Summary-FY12-2Q (Final) 1

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal of HonorPosterNationalPrograms | National Nuclear1-4Q FINAL 11Q2Q

  6. Low-Emissions Burner Technology using Biomass-Derived Liquid Fuels |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S.Leadership onProtonConcentrators FY13 Q2 Low-Cost,Department

  7. Low-Friction Hard Coatings | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S.Leadership onProtonConcentrators FY13 Q2 Low-Cost,Department1

  8. jobs

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26th AnnualHistoryM aterials S cience a ndjiahao Ames1651 q2/%2A

  9. joe_arm08.ppt

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26th AnnualHistoryM aterials S cience a ndjiahao Ames1651 q2/%2A

  10. DOE/EIA-0202(85/2Q) Short-Term Energy Outlook

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct: Crude7)8)4)1Q)3Q)4Q)1Q)2Q)

  11. DOE/EIA-0202(87/2Q) Energy Information Administration Short-Term

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy Information

  12. DOE/EIA-0202(87/3Q) Energy Information Administration Short-Term

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy

  13. DOE/EIA-0202(87/4Q) Energy Information Administration Short-Term

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy4Q) Energy

  14. DOE/EIA-0202(88/1Q) Energy Information Administration Short-Term

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q) Energy4Q)

  15. DOE/EIA-0202(89/4Q) SHOKT-TERM

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)

  16. DOE/EIA-0202(90/2Q) SHOET-TERM QUARTERLY PROJECTIONS

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q) SHOET-TERM

  17. DOE/EIA-0202(92/1Q)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q) SHOET-TERM1Q)

  18. DOE/EIA-0202(92/2Q)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q)

  19. DOE/EIA-0202|83/2Q)-1 Short-Term Energy Outlook

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q)|83/2Q)-1

  20. DOE/EIA-0207/1

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q)|83/2Q)-11

  1. DOE/EIA-0207/2 Residential Energy Consumption Survey:

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q)|83/2Q)-112

  2. DOE/EIA-0207/3 Residential Energy Consumption Survey: Conservation

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q)|83/2Q)-1123

  3. DOE/EIA-0214(2006)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101CompanyProduct:5/4Q)2Q)0/2Q)|83/2Q)-11236)

  4. Deep exclusive $?^+$ electroproduction off the proton at CLAS

    E-Print Network [OSTI]

    K. Park; M. Guidal; R. W. Gothe; J. M. Laget; M. Garçon; K. P. Adhikari; M. Aghasyan; M. J. Amaryan; M. Anghinolfi; H. Avakian; H. Baghdasaryan; J. Ball; N. A. Baltzell; M. Battaglieri; I. Bedlinsky; R. P. Bennett; A. S. Biselli; C. Bookwalter; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; M. Contalbrigo; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; G. E. Dodge; D. Doughty; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; A. Fradi; P. Eugenio; G. Fedotov; S. Fegan; J. A. Fleming; T. A. Forest; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; W. Gohn; E. Golovatch; L. Graham; K. A. Griffioen; B. Guegan; L. Guo; K. Hafidi; H. Hakobyan; C. Hanretty; D. Heddle; K. Hicks; D. Ho; M. Holtrop; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; D. Jenkins; H. S. Jo; D. Keller; M. Khandaker; P. Khetarpal; A. Kim; W. Kim; F. J. Klein; S. Koirala; A. Kubarovsky; V. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; K. Livingston; H. Y. Lu; I. J. D. MacGregor; Y. Mao; N. Markov; D. Martinez; M. Mayer; B. McKinnon; C. A. Meyer; T. Mineeva; M. Mirazita; V. Mokeev; H. Moutarde; E. Munevar; C. Munoz Camacho; P. Nadel-Turonski; C. S. Nepali; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; R. Paremuzyan; S. Park; E. Pasyuk; S. Anefalos Pereira; E. Phelps; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; D. Protopopescu; A. J. R. Puckett; B. A. Raue; G. Ricco; D. Rimal; M. Ripani; G. Rosner; P. Rossi; F. Sabatie; M. S. Saini; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; H. Seraydaryan; Y. G. Sharabian; E. S. Smith; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; P. Stoler; I. I. Strakovsky; S. Strauch; M. Taiuti; W. Tang; C. E. Taylor; Ye Tian; S. Tkachenko; A. Trivedi; M. Ungaro; B . Vernarsky; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; L. B. Weinstein; D. P. Weygand; M. H. Wood; N. Zachariou; J. Zhang; Z. W. Zhao; I. Zonta

    2013-01-11

    The exclusive electroproduction of $\\pi^+$ above the resonance region was studied using the $\\rm{CEBAF}$ Large Acceptance Spectrometer ($\\rm{CLAS}$) at Jefferson Laboratory by scattering a 6 GeV continuous electron beam off a hydrogen target. The large acceptance and good resolution of $\\rm{CLAS}$, together with the high luminosity, allowed us to measure the cross section for the $\\gamma^* p \\to n \\pi^+$ process in 140 ($Q^2$, $x_B$, $t$) bins: $0.16Q^2$$<4.5$ GeV$^2$ and 0.1 GeV$^2<$$-t$$<5.3$ GeV$^2$. For most bins, the statistical accuracy is on the order of a few percent. Differential cross sections are compared to two theoretical models, based either on hadronic (Regge phenomenology) or on partonic (handbag diagram) degrees of freedom. Both can describe the gross features of the data reasonably well, but differ strongly in their ingredients. If the handbag approach can be validated in this kinematical region, our data contain the interesting potential to experimentally access transversity Generalized Parton Distributions.

  5. Electron neutrino charged-current quasielastic scattering in the MINERvA experiment

    E-Print Network [OSTI]

    Jeremy Wolcott; for the MINERvA collaboration

    2015-10-28

    The electron-neutrino charged-current quasielastic (CCQE) cross section on nuclei is an important input parameter to appearance-type neutrino oscillation experiments. Current experiments typically work from the muon neutrino cross section and apply corrections from theoretical arguments to obtain a prediction for the electron neutrino cross section, but to date there has been no experimental verification of the estimates for this channel at an energy scale appropriate to such experiments. We present the first measurement of an exclusive reaction in few-GeV electron neutrino interactions, namely, the cross section for a CCQE-like process, made using the MINERvA detector. The result is given as differential cross-sections vs. the electron energy, electron angle, and square of the four-momentum transferred to the nucleus, $Q^2$. We also compute the ratio to a muon neutrino cross-section in $Q^2$ from MINERvA. We find satisfactory agreement between this measurement and the predictions of the GENIE generator.

  6. Exclusive $?^0$ electroproduction at $W>2$ GeV with CLAS

    E-Print Network [OSTI]

    I. Bedlinskiy; V. Kubarovsky; S. Niccolai; P. Stoler; K. P. Adhikari; M. D. Anderson; S. Anefalos Pereira; H. Avakian; J. Ball; N. A. Baltzell; M. Battaglieri; V. Batourine; A. S. Biselli; S. Boiarinov; J. Bono; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; L. Colaneri; P. L. Cole; M. Contalbrigo; O. Cortes; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; D. Doughty; R. Dupre; H. Egiyan; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; J. A. Fleming; T. A. Forest; B. Garillon; M. Gar\\c con; G. Gavalian; N. Gevorgyan; Y. Ghandilyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; E. Golovatch; R. W. Gothe; K. A. Griffioen; B. Guegan; L. Guo; K. Hafidi; H. Hakobyan; N. Harrison; M. Hattawy; K. Hicks; M. Holtrop; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; D. Jenkins; H. S. Jo; K. Joo; D. Keller; M. Khandaker; A. Kim; W. Kim; A. Klein; F. J. Klein; S. Koirala; S. E. Kuhn; S. V. Kuleshov; P. Lenisa; W. I. Levine; K. Livingston; H. Y. Lu; I . J . D. MacGregor; N. Markov; M. Mayer; B. McKinnon; M. Mirazita; V. Mokeev; R. A. Montgomery; C. I. Moody; H. Moutarde; A Movsisyan; C. Munoz Camacho; P. Nadel-Turonski; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; K. Park; S. Park; E. Pasyuk; E. Phelps; W. Phelps; J. J. Phillips; S. Pisano; O. Pogorelko; J. W. Price; Y. Prok; D. Protopopescu; S. Procureur; A. J. R. Puckett; B. A. Raue; M. Ripani; B. G. Ritchie; A. Rizzo; P. Rossi; P. Roy; F. Sabatié; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; I. Senderovich; Y. G. Sharabian; A. Simonyan; G. D. Smith; D. I. Sober; D. Sokhan; S. S. Stepanyan; S. Strauch; V. Sytnik; W. Tang; Ye Tian; M. Ungaro; A. V. Vlassov; H. Voskanyan; E. Voutier; N. K. Walford; D. Watts; X. Wei; L. B. Weinstein; M. Yurov; N. Zachariou; L. Zana; J. Zhang; Z. W. Zhao; I. Zonta; for the CLAS Collaboration

    2014-05-05

    Exclusive neutral-pion electroproduction ($ep\\to e^\\prime p^\\prime \\pi^0$) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections $d^4\\sigma/dtdQ^2dx_Bd\\phi_\\pi$ and structure functions $\\sigma_T+\\epsilon\\sigma_L, \\sigma_{TT}$ and $\\sigma_{LT}$ as functions of $t$ were obtained over a wide range of $Q^2$ and $x_B$. The data are compared with Regge and handbag theoretical calculations. Analyses in both frameworks find that a large dominance of transverse processes is necessary to explain the experimental results. For the Regge analysis it is found that the inclusion of vector meson rescattering processes is necessary to bring the magnitude of the calculated and measured structure functions into rough agreement. In the handbag framework, there are two independent calculations, both of which appear to roughly explain the magnitude of the structure functions in terms of transversity generalized parton distributions.

  7. A precision measurement of the $p$($e,e^\\prime p\\,$)$?^0$ reaction at threshold

    E-Print Network [OSTI]

    K. Chirapatpimol; M. H. Shabestari; R. A. Lindgren; L. C. Smith; J. R. M. Annand; D. W. Higinbotham; B. Moffit; V. Nelyubin; B. E. Norum; K. Allada; K. Aniol; K. Ardashev; D. S. Armstrong; R. A. Arndt; F. Benmokhtar; A. M. Bernstein; W. Bertozzi; W. J. Briscoe; L. Bimbot; A. Camsonne; J. -P. Chen; S. Choi; E. Chudakov; E. Cisbani; F. Cusanno; M. M. Dalton; C. Dutta; K. Egiyan; C. Fernandez-Ramirez; R. Feuerbach; K. G. Fissum; S. Frullani; F. Garibaldi; O. Gayou; R. Gilman; S. Gilad; J. Goity; J. Gomez; B. Hahn; D. Hamilton; J. -O. Hansen; J. Huang; R. Igarashi; D. Ireland; C. W. de Jager; X. Jin; X. Jiang; T. Jinasundera; J. Kellie; C. E. Keppel; N. Kolb; J. LeRose; N. Liyanage; K. Livingston; D. McNulty; L. Mercado; R. Michaels; M. Mihovilovic; S. Qian; X. Qian; S. Mailyan; V. Mamyan; S. Marrone; P. Monaghan; S. Nanda; C. F. Perdrisat; E. Piasetzky; D. Protopopescu; V. Punjabi; Y. Qiang; I. A. Rachek; A. Rakhman; G. Ron; G. Rosner; A. Saha; B. Sawatzky; A. Shahinyan; S. Sirca; N. Sparveris; R. R. Subedi; R. Suleiman; I. Strakovsky; V. Sulkosky; J. Moinelo; H. Voskanyan; K. Wang; Y. Wang; J. Watson; D. Watts; B. Wojtsekhowski; R. L. Workman; H. Yao; X. Zhan; Y. Zhang

    2015-04-10

    New results are reported from a measurement of $\\pi^0$ electroproduction near threshold using the $p(e,e^{\\prime} p)\\pi^0$ reaction. The experiment was designed to determine precisely the energy dependence of $s-$ and $p-$wave electromagnetic multipoles as a stringent test of the predictions of Chiral Perturbation Theory (ChPT). The data were taken with an electron beam energy of 1192 MeV using a two-spectrometer setup in Hall A at Jefferson Lab. For the first time, complete coverage of the $\\phi^*_{\\pi}$ and $\\theta^*_{\\pi}$ angles in the $p \\pi^0$ center-of-mass was obtained for invariant energies above threshold from 0.5 MeV up to 15 MeV. The 4-momentum transfer $Q^2$ coverage ranges from 0.05 to 0.155 (GeV/c)$^2$ in fine steps. A simple phenomenological analysis of our data shows strong disagreement with $p-$wave predictions from ChPT for $Q^2>0.07$ (GeV/c)$^2$, while the $s-$wave predictions are in reasonable agreement.

  8. An experimental investigation of a swirl gas damper for turbomachinery 

    E-Print Network [OSTI]

    Handy, Steven Brent

    1992-01-01

    H) '4P!PUNG CP I tF 97 m o O 'O Kl Co CQ N CL (0 (0 (0 CO (D CL E Z (D CL P) CI3 c8 V III m O C4 0 0 2 0 0 0 lO O LO CU CV CU CU Ol 0 0 CV 0 CV 0 0 0 CO 0 CD CU 0 0 V) Ci M (wd~) v?4s 98 TORQUE TEST RESULTS... 0 0 III IU 3 L 0 CD rd 01 L C f0 L l hl IU 3 0 rtl 0 IL 0 N N K 1A LII CL III CI: Q UI Q 2 Z C3 CL Z CI'. Z Z & UI IJI Z UI 0 M I ? ED K CC I ? J UI UI N M CC 0 Z J Q LJI Q. ' Q 0 0 I- Z 0 CC UI IZ Q 2 K K CC: CC 0...

  9. Spin Physics with CLAS

    SciTech Connect (OSTI)

    Yelena Prok

    2010-05-01

    Inelastic scattering using polarized nucleon targets and polarized charged lepton beams allows the extraction of double and single spin asymmetries that provide information about the helicity structure of the nucleon. A program designed to study such processes at low and intermediate $Q^2$ for the proton and deuteron has been pursued by the CLAS Collaboration at Jefferson Lab since 1998. Our inclusive data with high statistical precision and extensive kinematic coverage allow us to better constrain the polarized parton distributions and to accurately determine various moments of spin structure function $g_1$ as a function of $Q^2$. The latest results will be shown, illustrating our contribution to the world data, with comparisons of the data with NLO global fits, phenomenological models, chiral perturbation theory and the GDH and Bjorken sum rules. The semi-inclusive measurements of single and double spin asymmetries for charged and neutral pions are also show, indicating the importance of the orbital motion of quarks in understanding the spin structure of the nucleon.

  10. Foaming/antifoaming in WTP Tanks Equipped with Pulse Jet Mixer and Air Spargers

    SciTech Connect (OSTI)

    HASSAN, NEGUIB

    2004-06-29

    The River Protection Project-Waste Treatment Plant (RPP-WTP) requested Savannah River National Laboratory (SRNL) to conduct small-scale foaming and antifoam testing using actual Hanford waste and simulants subjected to air sparging. The foaminess of Hanford tank waste solutions was previously demonstrated in SRNL during WTP evaporator foaming and ultrafiltration studies and commercial antifoam DOW Q2-3183A was recommended to mitigate the foam in the evaporators. Currently, WTP is planning to use air spargers in the HLW Lag Storage Vessels, HLW Concentrate Receipt Vessel, and the Ultrafiltration Vessels to assist the performance of the Jet Pulse Mixers (JPM). Sparging of air into WTP tanks will induce a foam layer within the process vessels. The air dispersion in the waste slurries and generated foams could present problems during plant operation. Foam in the tanks could also adversely impact hydrogen removal and mitigation. Antifoam (DOW Q2-3183A) will be used to control foaming in Hanford sparged waste processing tanks. These tanks will be mixed by a combination of pulse-jet mixers and air spargers. The percent allowable foaminess or freeboard in WTP tanks are shown in tables.

  11. The Dirac Form Factor Predicts the Pauli Form Factor in the Endpoint Model

    E-Print Network [OSTI]

    Sumeet Dagaonkar; Pankaj Jain; John P. Ralston

    2015-03-24

    We compute the momentum-transfer dependence of the proton Pauli form factor $F_{2}$ in the endpoint overlap model. We find the model correctly reproduces the scaling of the ratio of $F_{2}$ with the Dirac Form factor $F_{1}$ observed at the Jefferson Laboratory. The calculation uses the leading-power, leading twist Dirac structure of the quark light-cone wave function, and the same endpoint dependence previously determined from the Dirac form factor $F_{1}$. There are no parameters and no adjustable functions in the endpoint model's prediction for $F_{2}$. The model's predicted ratio $F_{2}(Q^{2})/F_{1}(Q^{2})$ is quite insensitive to the endpoint wave function, which explains why the observed ratio scales like $1/Q$ down to rather low momentum transfers. The endpoint model appears to be the only comprehensive model consistent with all form factor information as well as reproducing fixed-angle proton-proton scattering at large momentum transfer. Any one of the processes is capable of predicting the others.

  12. Pion transverse charge density and the edge of hadrons

    SciTech Connect (OSTI)

    Carmignotto, Marco; Horn, Tanja; Miller, Gerald A.

    2014-08-01

    We use the world data on the pion form factor for space-like kinematics and a technique used to extract the proton transverse densities, to extract the transverse pion charge density and its uncertainty due to experimental uncertainties and incomplete knowledge of the pion form factor at large values of Q2. The pion charge density at small values of b<0.1 fm is dominated by this incompleteness error while the range between 0.1-0.3 fm is relatively well constrained. A comparison of pion and proton charge densities shows that the pion is denser than the proton for values of b<0.2 fm. The pion and proton distributions seem to be the same for values of b=0.2-0.6 fm. Future data from Jlab 12 GeV and the EIC will increase the dynamic extent of the data to higher values of Q2 and thus reduce the uncertainties in the extracted pion charge density.

  13. Precision Measurement of the Neutron Twist-3 Matrix Element dn2: Probing Color Forces

    SciTech Connect (OSTI)

    Posik, Matthew; Flay, David; Parno, Diana; Allada, Kalyan; Armstrong, Whitney; Averett, Todd; Benmokhtar, Fatiha; Bertozzi, William; Camsonne, Alexandre; Canan, Mustafa; Cates, Gordon; Chen, Chunhua; Chen, Jian-Ping; Choi, Seonho; Chudakov, Eugene; Cusanno, Francesco; Dalton, Mark; Deconinck, Wouter; De Jager, Cornelis; Deng, Xiaoyan; Deur, Alexandre; Dutta, Chiranjib; El Fassi, Lamiaa; Franklin, Gregg; Friend, Megan; Gao, Haiyan; Garibaldi, Franco; Gilad, Shalev; Gilman, Ronald; Glamazdin, Oleksandr; Golge, Serkan; Gomez, Javier; Guo, Lei; Hansen, Jens-Ole; Higinbotham, Douglas; Holmstrom, Timothy; Huang, J.; Hyde, Charles; Ibrahim Abdalla, Hassan; Jiang, Xiaodong; Jin, Ge; Katich, Joseph; Kelleher, Aidan; Kolarkar, Ameya; Korsch, Wolfgang; Kumbartzki, Gerfried; LeRose, John; Lindgren, Richard; Liyanage, Nilanga; Long, Elena; Lukhanin, Oleksandr; Mamyan, Vahe; McNulty, Dustin; Meziani, Zein-Eddine; Michaels, Robert; Mihovilovic, Miha; Moffit, Bryan; Muangma, Navaphon; Nanda, Sirish; Narayan, Amrendra; Nelyubin, Vladimir; Norum, Blaine; Nuruzzaman, nfn; Oh, Yongseok; Peng, Jen-chieh; Qian, Xin; Qiang, Yi; Rakhman, Abdurahim; Riordan, Seamus; Saha, Arunava; Sawatzky, Bradley; Hashemi Shabestari, Mitra; Shahinyan, Albert; Sirca, Simon; Solvignon-Slifer, Patricia; Subedi, Ramesh; Sulkosky, Vincent; Tobias, William; Troth, Wolfgang; Wang, Diancheng; Wang, Y.; Wojtsekhowski, Bogdan; Yan, X.; Yao, Huan; Ye, Yunxiu; Ye, Zhihong; Yuan, Lulin; Zhan, X.; Zhang, Y.; Zhang, Y.-W.; Zhao, Bo; Zheng, Xiaochao

    2014-07-01

    Double-spin asymmetries and absolute cross sections were measured at large Bjorken x (0.25 lte x lte 0.90), in both the deep-inelastic and resonance regions, by scattering longitudinally polarized electrons at beam energies of 4.7 and 5.9 GeV from a transversely and longitudinally polarized 3He target. In this dedicated experiment, the spin structure function g2 on 3He was determined with precision at large x, and the neutron twist-three matrix element dn2 was measured at ?Q2? of 3.21 and 4.32 GeV2/c2, with an absolute precision of about 10?5. Our results are found to be in agreement with lattice QCD calculations and resolve the disagreement found with previous data at ?Q2?= 5 GeV2/c2. Combining dn2 and a newly extracted twist-four matrix element, fn2, the average neutron color electric and magnetic forces were extracted and found to be of opposite sign and about 60 MeV/fm in magnitude.

  14. Non-linear fluctuation effects in dynamics of freely suspended film

    E-Print Network [OSTI]

    E. I. Kats; V. V. Lebedev

    2015-01-27

    Long-scale dynamic fluctuation phenomena in freely suspended films is analyzed. We consider isotropic films that, say, can be pulled from bulk smectic A liquid crystals. The key feature of such objects is possibility of bending deformations of the film. The bending (also known as flexular) mode turns out to be anomalously weakly attenuated. In the harmonic approximation there is no viscous-like damping of the bending mode, proportional to q^2 (q is the wave vector of the mode), since it is forbidden by the rotational symmetry. Therefore the bending mode is strongly affected by non-linear dynamic fluctuation effects. We calculate the dominant fluctuation contributions to the damping of the bending mode due to its coupling to the in-plane viscous mode, that restores the viscous-like q^2 damping of the bending mode. Our calculations are performed in the framework of the perturbation theory where the coupling of the modes is assumed to be small, then the bending mode damping is relatively weak. We discuss our results in the context of existing experiments and numeric simulations of the freely suspended films and propose possible experimental observations of our predictions.

  15. Electron Neutrino Charged-Current Quasielastic Scattering in the MINERvA Experiment

    E-Print Network [OSTI]

    Wolcott, J

    2016-01-01

    The electron-neutrino charged-current quasielastic (CCQE) cross section on nuclei is an important input parameter for electron neutrino appearance oscillation experiments. Current experiments typically begin with the muon neutrino cross section and apply theoretical corrections to obtain a prediction for the electron neutrino cross section. However, at present no experimental verification of the estimates for this channel at an energy scale appropriate to such experiments exists. We present the cross sections for a CCQE-like process determined using the MINERvA detector, which are the first measurements of any exclusive reaction in few-GeV electron neutrino interactions. The result is given as differential cross-sections vs. the electron energy, electron angle, and square of the four-momentum transferred to the nucleus, $Q^{2}$. We also compute the ratio to a muon neutrino cross-section in $Q^{2}$ from MINERvA. We find satisfactory agreement between these measurements and the predictions of the GENIE generato...

  16. The Role of Mesons in the Electromagnetic Form Factors of the Nucleon

    E-Print Network [OSTI]

    C. Crawford; T. Akdogan; R. Alarcon; W. Bertozzi; E. Booth; T. Botto; J. R. Calarco; B. Clasie; A. DeGrush; T. W. Donnelly; K. Dow; M. Farkhondeh; R. Fatemi; O. Filoti; W. Franklin; H. Gao; E. Geis; S. Gilad; D. Hasell; P. Karpius; M. Kohl; H. Kolster; T. Lee; E. Lomon; A. Maschinot; J. Matthews; K. McIlhany; N. Meitanis; R. Milner; J. Rapaport; R. Redwine; J. Seely; A. Shinozaki; A. Sindile; S. Sirca; E. Six; T. Smith; B. Tonguc; C. Tschalaer; E. Tsentalovich; W. Turchinetz; Y. Xiao; W. Xu; C. Zhang; Z. Zhou; V. Ziskin; T. Zwart

    2010-08-01

    The roles played by mesons in the electromagnetic form factors of the nucleon are explored using as a basis a model containing vector mesons with coupling to the continuum together with the asymptotic $Q^2$ behavior of perturbative QCD. Specifically, the vector dominance model (GKex) developed by Lomon is employed, as it is known to be very successful in representing the existing high-quality data published to date. An analysis is made of the experimental uncertainties present when the differences between the GKex model and the data are expanded in orthonormal basis functions. A main motivation for the present study is to provide insight into how the various ingredients in this model yield the measured behavior, including discussions of when dipole form factors are to be expected or not, of which mesons are the major contributors, for instance, at low-$Q^2$ or large distances, and of what effects are predicted from coupling to the continuum. Such insights are first discussed in momentum space, followed by an analysis of how different and potentially useful information emerges when both the experimental and theoretical electric form factors are Fourier transformed to coordinate space. While these Fourier transforms should not be interpreted as "charge distributions", nevertheless the roles played by the various mesons, especially which are dominant at large or small distance scales, can be explored via such experiment--theory comparisons.

  17. Precision Measurement of the p(e, e´p) ?? Reaction at Threshold

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chirapatpimol, K.; Shabestari, M.H.; Lindgren, R. A.; Smith, L. C.; Annand, J. R. M.; Higinbotham, D. W.; Moffit, B.

    2015-05-01

    New results are reported from a measurement of $\\pi^0$ electroproduction near threshold using the p(e, e´p) ?? reaction. The experiment was designed to determine precisely the energy dependence of $s-$ and $p-$wave electromagnetic multipoles as a stringent test of the predictions of Chiral Perturbation Theory (ChPT). The data were taken with an electron beam energy of 1192 MeV using a two-spectrometer setup in Hall A at Jefferson Lab. For the first time, complete coverage of the $\\phi^*_{\\pi}$ and $\\theta^*_{\\pi}$ angles in the $p \\pi^0$ center-of-mass was obtained for invariant energies above threshold from 0.5 MeV up to 15 MeV. Themore »4-momentum transfer $Q^2$ coverage ranges from 0.05 to 0.155 (GeV/c)$^2$ in fine steps. A simple phenomenological analysis of our data shows strong disagreement with $p-$wave predictions from ChPT for $Q^2>0.07$ (GeV/c)$^2$, while the $s-$wave predictions are in reasonable agreement.« less

  18. Investigation into the semimagic nature of the tin isotopes through electromagnetic moments

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Allmond, J. M.; Stuchbery, A. E.; Galindo-Uribarri, A.; Padilla-Rodal, E.; Radford, D. C.; Batchelder, J. C.; Bingham, C. R.; Howard, M. E.; Liang, J. F.; Manning, B.; et al

    2015-10-19

    A complete set of electromagnetic moments, B(E2;0+1 2+1), Q(2+1), and g(2+1), have been measured from Coulomb excitation of semi-magic 112,114,116,118,120,122,124Sn (Z = 50) on natural carbon and titanium targets. The magnitude of the B(E2) values, measured to a precision of ~4%, disagree with a recent lifetime study [Phys. Lett. B 695, 110 (2011)] that employed the Doppler- shift attenuation method. The B(E2) values show an overall enhancement compared with recent theoretical calculations and a clear asymmetry about midshell, contrary to naive expectations. A new static electric quadrupole moment, Q(2+1), has been measured for 114Sn. The static quadrupole moments are generallymore »consistent with zero but reveal an enhancement near midshell; this had not been previously observed. The magnetic dipole moments are consistent with previous measurements and show a near monotonic decrease in value with neutron number. The current theory calculations fail to reproduce the electromagnetic moments of the tin isotopes. The role of 2p-2h and 4p-4h intruders, which are lowest in energy at mid shell and outside of current model spaces, needs to be investigated in the future.« less

  19. The Color Glass Condensate and hadron production in the forward region

    E-Print Network [OSTI]

    Adrian Dumitru; Arata Hayashigaki; Jamal Jalilian-Marian

    2005-09-06

    We consider one loop corrections to single inclusive particle production in parton-nucleus scattering at high energies, treating the target nucleus as a Color Glass Condensate. We prove by explicit computation that in the leading log Q^2 approximation, these corrections lead to collinear factorization and DGLAP evolution of the projectile parton distribution and hadron fragmentation functions. At leading logarithmic level, and in single-inclusive cross sections, only two-point functions of Wilson lines in the adjoint and fundamental representations (Mueller's dipoles) arise, which can be obtained from the solution of the JIMWLK equations. The application of our results to forward-rapidity production at RHIC energy shows that, in general, recoil effects are large and that the forward rapidity region at RHIC is rather different from the central region at LHC, despite comparable gluon densities in the target. We show that both the quantum x-evolution of the high-density target as well as the DGLAP Q^2-evolution of the parton distribution and fragmentation functions are clearly seen in the BRAHMS data. This provides additional strong evidence for the Color Glass Condensate at RHIC.

  20. A precision measurement of the $p$($e,e^\\prime p\\,$)$?^0$ reaction at threshold

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chirapatpimol, Khem; et. al.,

    2015-05-01

    New results are reported from a measurement of $\\pi^0$ electroproduction near threshold using the $p(e,e^{\\prime} p)\\pi^0$ reaction. The experiment was designed to determine precisely the energy dependence of $s-$ and $p-$wave electromagnetic multipoles as a stringent test of the predictions of Chiral Perturbation Theory (ChPT). The data were taken with an electron beam energy of 1192 MeV using a two-spectrometer setup in Hall A at Jefferson Lab. For the first time, complete coverage of the $\\phi^*_{\\pi}$ and $\\theta^*_{\\pi}$ angles in the $p \\pi^0$ center-of-mass was obtained for invariant energies above threshold from 0.5 MeV up to 15 MeV. The 4-momentummore »transfer $Q^2$ coverage ranges from 0.05 to 0.155 (GeV/c)$^2$ in fine steps. A simple phenomenological analysis of our data shows strong disagreement with $p-$wave predictions from ChPT for $Q^2>0.07$ (GeV/c)$^2$, while the $s-$wave predictions are in reasonable agreement.« less

  1. Qweak: First Direct Measurement of the Weak Charge of the Proton

    SciTech Connect (OSTI)

    Nuruzzaman, NFN

    2014-04-01

    The Qweak experiment at Hall C of Thomas Jefferson National Accelerator Facility has made the first direct measurement of the weak charge of the proton, QWp, through a precision measurement of the parity-violating asymmetry in elastic e-p scattering at low momentum transfer Q2= 0.025 (GeV/c)2 with incident electron beam energy of 1.155 GeV. The Qweak experiment, along with earlier results of parity violating elastic scattering experiments, is expected to determine the most precise value of QWp which is suppressed in the Standard Model. If this result is further combined with the 133Cs atomic parity violation (APV) measurement, significant constraints on the weak charge of the up quark, down quark, and neutron can be extracted. This data will also be used to determine the weak-mixing angle, sin2 ?W, with a relative uncertainty of < 0.5% that will provide a competitive measurement of the running of sin2 ?W to low Q2. An overview of the experiment and its results using the commissioning dataset, constituting approximately 4% of the data collected in the experiment, are reported here.

  2. Non-linear BFKL dynamics: color screening vs. gluon fusion

    E-Print Network [OSTI]

    R. Fiore; P. V. Sasorov; V. R. Zoller

    2012-11-01

    A feasible mechanism of unitarization of amplitudes of deep inelastic scattering at small values of Bjorken $x$ is the gluon fusion. However, its efficiency depends crucially on the vacuum color screening effect which accompanies the multiplication and the diffusion of BFKL gluons from small to large distances. From the fits to lattice data on field strength correlators the propagation length of perturbative gluons is $R_c\\simeq 0.2-0.3$ fermi. The probability to find a perturbative gluon with short propagation length at large distances is suppressed exponentially. It changes the pattern of (dif)fusion dramatically. The magnitude of the fusion effect appears to be controlled by the new dimensionless parameter $\\sim R_c^2/8B$, with the diffraction cone slope $B$ standing for the characteristic size of the interaction region. It should slowly $\\propto 1/\\ln Q^2$ decrease at large $Q^2$. Smallness of the ratio $R_c^2/8B$ makes the non-linear effects rather weak even at lowest Bjorken $x$ available at HERA. We report the results of our studies of the non-linear BFKL equation which has been generalized to incorporate the running coupling and the screening radius $R_c$ as the infrared regulator.

  3. Exclusive processes at JLab at 6 GeV

    SciTech Connect (OSTI)

    Kim, Andrey

    2015-01-01

    Deeply virtual exclusive reactions provide a unique opportunity to probe the complex internal structure of the nucleon. They allow to access information about the correlations between parton transverse spatial and longitudinal momentum distributions from experimental observables. Dedicated experiments to study Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP) have been carried out at Jefferson Lab using continuous electron beam with energies up to 6 GeV. Unpolarized cross sections, beam, target and double spin asymmetries have been measured for DVCS as well as for ?0 exclusive electroproduction. The data from Hall B provide a wide kinematic coverage with Q2=1-4.5 GeV2, xB=0.1-0.5, and ?t up to 2 GeV2. Hall A data have limited kinematic range partially overlapping with Hall B kinematics but provide a high accuracy measurements. Scaling tests of the DVCS cross sections provide solid evidence of twist-2 dominance, which makes chiral-even GPDs accessible even at modest Q2. We will discuss the interpretation of these data in terms of Generalized Parton Distributions (GPDs) model. Successful description of the recent CLAS ?0 exclusive production data within the framework of the GPD-based model provides a unique opportunity to access the chiral-odd GPDs.

  4. Generalised form factor dark matter in the Sun

    E-Print Network [OSTI]

    Aaron C. Vincent; Aldo Serenelli; Pat Scott

    2015-04-16

    We study the effects of energy transport in the Sun by asymmetric dark matter with momentum and velocity-dependent interactions, with an eye to solving the decade-old Solar Abundance Problem. We study effective theories where the dark matter-nucleon scattering cross-section goes as $v_{\\rm rel}^{2n}$ and $q^{2n}$ with $n = -1, 0, 1 $ or $2$, where $v_{\\rm rel}$ is the dark matter-nucleon relative velocity and $q$ is the momentum exchanged in the collision. Such cross-sections can arise generically as leading terms from the most basic nonstandard DM-quark operators. We employ a high-precision solar simulation code to study the impact on solar neutrino rates, the sound speed profile, convective zone depth, surface helium abundance and small frequency separations. We find that the majority of models that improve agreement with the observed sound speed profile and depth of the convection zone also reduce neutrino fluxes beyond the level that can be reasonably accommodated by measurement and theory errors. However, a few specific points in parameter space yield a significant overall improvement. A 3-5 GeV DM particle with $\\sigma_{SI} \\propto q^2$ is particularly appealing, yielding more than a $6\\sigma$ improvement with respect to standard solar models, while being allowed by direct detection and collider limits. We provide full analytical capture expressions for $q$- and $v_{\\rm rel}$-dependent scattering, as well as complete likelihood tables for all models.

  5. E00-110 experiment at Jefferson Lab Hall A: Deeply virtual Compton scattering off the proton at 6 GeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Defurne, M.; Amaryan, M.; Aniol, K. A.; Beaumel, M.; Benaoum, H.; Bertin, P.; Brossard, M.; Camsonne, A.; Chen, J. -P.; Chudakov, E.; et al

    2015-11-03

    We present final results on the photon electroproduction ($\\vec{e}p\\rightarrow ep\\gamma$) cross section in the deeply virtual Compton scattering (DVCS) regime and the valence quark region from Jefferson Lab experiment E00-110. Results from an analysis of a subset of these data were published before, but the analysis has been improved which is described here at length, together with details on the experimental setup. Furthermore, additional data have been analyzed resulting in photon electroproduction cross sections at new kinematic settings, for a total of 588 experimental bins. Results of the $Q^2$- and $x_B$-dependences of both the helicity-dependent and helicity-independent cross sections aremore »discussed. The $Q^2$-dependence illustrates the dominance of the twist-2 handbag amplitude in the kinematics of the experiment, as previously noted. Thanks to the excellent accuracy of this high luminosity experiment, it becomes clear that the unpolarized cross section shows a significant deviation from the Bethe-Heitler process in our kinematics, compatible with a large contribution from the leading twist-2 DVCS$^2$ term to the photon electroproduction cross section. The necessity to include higher-twist corrections in order to fully reproduce the shape of the data is also discussed. The DVCS cross sections in this study represent the final set of experimental results from E00-110, superseding the previous publication.« less

  6. Electron Scattering with Polarized Targets at TESLA

    E-Print Network [OSTI]

    The TESLA-N Study Group; :; M. Anselmino; E. C. Aschenauer; S. Belostotski; W. Bialowons; J. Bluemlein; V. Braun; R. Brinkmann; M. Dueren; F. Ellinghaus; K. Goeke; St. Goertz; A. Gute; J. Harmsen; D. v. Harrach; R. Jakob; E. M. Kabuss; R. Kaiser; V. Korotkov; P. Kroll; E. Leader; B. Lehmann-Dronke; L. Mankiewicz; A. Meier; W. Meyer; N. Meyners; D. Mueller; P. J. Mulders; W. -D. Nowak; L. Niedermeier; K. Oganessyan; P. V. Pobilitsa; M. V. Polyakov; G. Reicherz; K. Rith; D. Ryckbosch; A. Schaefer; K. Sinram; G. v. d. Steenhoven; E. Steffens; J. Steijger; C. Weiss

    2000-11-24

    Measurements of polarized electron-nucleon scattering can be realized at the TESLA linear collider facility with projected luminosities that are about two orders of magnitude higher than those expected of other experiments at comparable energies. Longitudinally polarized electrons, accelerated as a small fraction of the total current in the e+ arm of TESLA, can be directed onto a solid state target that may be either longitudinally or transversely polarized. A large variety of polarized parton distribution and fragmentation functions can be determined with unprecedented accuracy, many of them for the first time. A main goal of the experiment is the precise measurement of the x- and Q^2-dependence of the experimentally totally unknown quark transversity distributions that will complete the information on the nucleon's quark spin structure as relevant for high energy processes. Comparing their Q^2-evolution to that of the corresponding helicity distributions constitutes an important precision test of the predictive power of QCD in the spin sector. Measuring transversity distributions and tensor charges allows access to the hitherto unmeasured chirally odd operators in QCD which are of great importance to understand the role of chiral symmetry. The possibilities of using unpolarized targets and of experiments with a real photon beam turn TESLA-N into a versatile next-generation facility at the intersection of particle and nuclear physics.

  7. Charm semileptonic decays and |V_{cs(d)}| from heavy clover quarks and 2+1 flavor asqtad staggered ensembles

    E-Print Network [OSTI]

    Jon A. Bailey; D. Du; A. X. El-Khadra; Steven Gottlieb; R. D. Jain; A. S. Kronfeld; R. S. Van de Water; R. Zhou; for the Fermilab Lattice; MILC Collaborations

    2012-11-21

    By combining experimentally measured partial branching fractions for the semileptonic decays D to K l nu and D to pi l nu with lattice calculations of the form factors f_+^{D to K}(q^2) and f_+^{D to pi}(q^2), one can extract the CKM matrix elements |V_{cs}| and |V_{cd}|. We are calculating the form factors by using Fermilab charm and asqtad staggered light and strange quarks on 2+1 flavor asqtad staggered ensembles generated by the MILC Collaboration. We vary the light valence quark masses from 0.4m_s to 0.05m_s (m_s is the strange sea-quark mass), and the lattice spacings, from about 0.12 fm to about 0.045 fm. We extrapolate to the physical light-quark mass and the continuum limit using heavy-light meson staggered chiral perturbation theory about the SU(2) and SU(3) limits, compare the resulting (preliminary) form factor shapes with experiment, and discuss our errors.

  8. Eltron Research & Development

    SciTech Connect (OSTI)

    Evenson, Carl; Mackay, Richard; Faull, John

    2014-03-01

    This topical report covers technical work conducted under contract DE-FC26-05NT42469 between FY06 Q1 through FY14 Q2. The project evolved through several budget periods, budget revisions and continuation applications. This report covers work performed under the “base” program. In 2010 ARRA funding was added to the project. A separate report covering the ARRA portion of the project was submitted to DOE. The original project was focused on research and development for scale-up of hydrogen separation membrane for a FutureGen type power plant. The work included membrane testing and evaluation of metal alloy flat plates vs. tubes and metal membranes vs. cermet membranes. In addition, economic analysis and process modeling was performed. The original project team included CoorsTek, NORAM, and Praxair. In FY10Q2 a continuation application was filed for conducting a scale-up test at Eastman Chemical. In this part of the project a Subscale Engineering Prototype (SEP) membrane skid was designed, fabricated, and operated on a gasified coal slip-stream on Eastman’s site in Kingsport, TN. Following operation, the project was reorganized and a second continuation application with a new statement of work was initiated in FY12Q1. Finally, based on DOE’s decision not to proceed with a Process Development Unit (PDU) field test, a third continuation application and statement of work was initiated in FY13Q1 to close out the project.

  9. Search for new physics in $e^{pm}q$ contact interactions at HERA

    E-Print Network [OSTI]

    Adloff, C; Andrieu, B; Anthonis, T; Astvatsatourov, A; Babaev, A; Bähr, J; Baranov, P S; Barrelet, E; Bartel, Wulfrin; Baumgartner, S; Becker, J; Beckingham, M; Beglarian, A; Behnke, O; Belousov, A; Berger, C; Berndt, T; Bizot, J C; Böhme, J; Boudry, V; Braunschweig, W; Brisson, V; Broker, H B; Brown, D P; Bruncko, Dusan; Büsser, F W; Bunyatyan, A; Burrage, A; Buschhorn, G; Bystritskaya, L; Campbell, A J; Caron, S; Cassol-Brunner, F; Chekelian, V; Clarke, D; Collard, Caroline; Contreras, J G; Coppens, Y R; Coughlan, J A; Cousinou, M C; Cox, B E; Cozzika, G; Cvach, J; Dainton, J B; Dau, W D; Daum, K; Davidsson, M; Delcourt, B; Delerue, N; Demirchyan, R A; de Roeck, A; De Wolf, E A; Diaconu, C; Dingfelder, J; Dixon, P; Dodonov, V; Dowell, John D; Droutskoi, A; Dubak, A; Duprel, C; Eckerlin, G; Eckstein, D; Efremenko, V; Egli, S; Eichler, R; Eisele, F; Eisenhandler, E F; Ellerbrock, M; Elsen, E; Erdmann, M; Erdmann, W; Faulkner, P J W; Favart, L; Fedotov, A; Felst, R; Ferencei, J; Ferron, S; Fleischer, M; Fleischmann, P; Fleming, Y H; Flügge, G; Fomenko, A; Foresti, I; Formánek, J; Franke, G; Frising, G; Gabathuler, Erwin; Gabathuler, K; Garvey, J; Gassner, J; Gayler, J; Gerhards, R; Gerlich, C; Ghazaryan, S; Görlich, L; Gogitidze, N; Grab, C; Grabskii, V; Grässler, Herbert; Greenshaw, T; Grindhammer, G; Hadig, T; Haidt, Dieter; Hajduk, L; Haller, J; Haynes, W J; Heinemann, B; Heinzelmann, G; Henderson, R C W; Hengstmann, S; Henschel, H; Heremans, R; Herrera-Corral, G; Herynek, I; Hildebrandt, M; Hilgers, M; Hiller, K H; Hladky, J; Hoting, P; Hoffmann, D; Horisberger, R P; Hovhannisyan, A V; Hurling, S; Ibbotson, M; Issever, C; Jacquet, M; Jaffré, M; Janauschek, L; Janssen, X; Jemanov, V; Jönsson, L B; Johnson, C; Johnson, D P; Jones, M A S; Jung, H; Kant, D; Kapichine, M; Karlsson, M; Karschnick, O; Katzy, J; Keil, F; Keller, N; Kennedy, J; Kenyon, I R; Kiesling, C; Kjellberg, P; Klein, M; Kleinwort, C; Kluge, T; Knies, G; Knutsson, A; Koblitz, B; Kolya, S D; Korbel, V; Kostka, P; Kotelnikov, S K; Koutouev, R; Koutov, A; Kroseberg, J; Krüger, K; Kuhr, T; Lamb, D; Landon, M P J; Lange, W; Lastoviicka, T; Laycock, P; Lebailly, E; Lebedev, A; Leiner, B; Lemrani, R; Lendermann, V; Levonian, S; List, B; Lobodzinska, E; Lobodzinski, B; Loginov, A; Loktionova, N A; Lubimov, V; Lüders, S; Lüke, D; Lytkin, L; Malden, N; Malinovskii, E I; Mangano, S; Maracek, R; Marage, P; Marks, J; Marshall, R; Martyn, H U; Martyniak, J; Maxfield, S J; Meer, D; Mehta, A; Meier, K; Meyer, A B; Meyer, H; Meyer, J; Michine, S; Mikocki, S; Milstead, D; Mohrdieck, S; Mondragón, M N; Moreau, F; Morozov, A; Morris, J V; Müller, K; Murn, P; Nagovizin, V; Naroska, Beate; Naumann, J; Naumann, T; Newman, P R; Niebergall, F; Niebuhr, C B; Nix, O; Nowak, G; Nozicka, M; Olsson, J E; Ozerov, D; Panassik, V; Pascaud, C; Patel, G D; Peez, M; Pérez, E; Petrukhin, A; Phillips, J P; Pitzl, D; Pöschl, R; Potachnikova, I; Povh, B; Rauschenberger, J; Reimer, P; Reisert, B; Risler, C; Rizvi, E; Robmann, P; Roosen, R; Rostovtsev, A A; Rusakov, S V; Rybicki, K; Sankey, D P C; Schatzel, S; Scheins, J; Schilling, F P; Schleper, P; Schmidt, D; Schmidt, S; Schmitt, S; Schneider, M; Schoeffel, L; Schöning, A; Schörner-Sadenius, T; Schröder, V; Schultz-Coulon, H C; Schwanenberger, C; Sedlak, K; Sefkow, F; Shevyakov, I; Shtarkov, L N; Sirois, Y; Sloan, T; Smirnov, P; Soloviev, Yu; South, D; Spaskov, V N; Specka, A E; Spitzer, H; Stamen, R; Stella, B; Stiewe, J; Strauch, I; Straumann, U; Chechelnitskii, S; Thompson, G; Thompson, P D; Tomasz, F; Traynor, D; Truöl, P; Tsipolitis, G; Tsurin, I; Turnau, J; Turney, J E; Tzamariudaki, E; Uraev, A; Urban, M; Usik, A; Valkár, S; Valkárová, A; Vallée, C; Van Mechelen, P; Vargas-Trevino, A; Vasilev, S; Vazdik, Ya A; Vest, A; Vichnevski, A; Wacker, K; Wagner, J; Wallny, R; Waugh, B; Weber, G; Wegener, D; Werner, C; Werner, N; Wessels, M; White, G; Wiesand, S; Wilksen, T; Winde, M; Winter, G G; Wissing, C; Wobisch, M; Woerling, E E; Wünsch, E; Wyatt, A C; Zaicek, J; Zaleisak, J; Zhang, Z; Zhokin, A; Zomer, F; Zur Nedden, M

    2003-01-01

    Deep-inelastic e^\\pm p scattering at high squared momentum transfer Q^2 up to 30000 GeV^2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements d sigma / d Q^2, corresponding to integrated luminosities of 16.4 pb^-1 of e^- p data and 100.8 pb^-1 of e^+ p data, are well described by the Standard Model and are analysed to set constraints on new phenomena. For conventional contact interactions lower limits are set on compositeness scales Lambda ranging between 1.6 - 5.5 TeV. Couplings and masses of leptoquarks and squarks in R-parity violating supersymmetry are constrained to M / lambda > 0.3 - 1.4 TeV. A search for low scale quantum gravity effects in models with large extra dimensions provides limits on the effective Planck scale of M_S > 0.8 TeV. A form factor analysis yields a bound on the radius of light quarks of R_q < 1.0 x 10^-18 m.

  10. Jets in Effective Theory: Summing Phase Space Logs

    E-Print Network [OSTI]

    Michael Trott

    2006-11-27

    We demonstrate how to resum phase space logarithms in the Sterman-Weinberg (SW) dijet decay rate within the context of Soft Collinear Effective theory (SCET). An operator basis corresponding to two and three jet events is defined in SCET and renormalized. We obtain the RGE of the two and three jet operators and run the operators from the scale $\\mu^2 = Q^2$ to the phase space scale $ \\mu^2_\\delta = \\delta^2 Q^2$. This phase space scale, where $\\delta$ is the cone half angle of the jet, defines the angular region of the jet. At $ \\mu^2_{\\delta}$ we determine the mixing of the three and two jet operators. We combine these results with the running of the two jet shape function, which we run down to an energy cut scale $\\mu^2_{\\beta}$. This defines the resumed SW dijet decay rate in the context of SCET. The approach outlined here demonstrates how to establish a jet definition in the context of SCET. This allows a program of systematically improving the theoretical precision of jet phenomenology to be carried out.

  11. The Weak Charge of the Proton: A Search For Physics Beyond the Standard Model

    SciTech Connect (OSTI)

    MacEwan, Scott

    2015-05-01

    The Qweak experiment, which completed running in May of 2012 at Jefferson Laboratory, has measured the parity-violating asymmetry in elastic electron-proton scattering at four-momentum transfer Q^2=0.025 (GeV/c)^2 in order to provide the first direct measurement of the proton?s weak charge, Qpw. The Standard Model makes firm predictions for the weak charge; deviations from the predicted value would provide strong evidence of new physics beyond the Standard Model. Using an 89% polarized electron beam at 145 microA scattering from a 34.4 cm long liquid hydrogen target, scattered electrons were detected using an array of eight fused-silica detectors placed symmetric about the beam axis. The parity-violating asymmetry was then measured by reversing the helicity of the incoming electrons and measuring the normalized difference in rate seen in the detectors. The low Q^2 enables a theoretically clean measurement; the higher order hadronic corrections are constrained using previous parity-violating electron scattering world data. The experimental method will be discussed, with recent results constituting 4% of our total data and projections of our proposed uncertainties on the full data set.

  12. Semiclassical energy formulas for power-law and log potentials in quantum mechanics

    E-Print Network [OSTI]

    Richard L. Hall; Qutaibeh D. Katatbeh

    2003-05-09

    We study a single particle which obeys non-relativistic quantum mechanics in R^N and has Hamiltonian H = -Delta + V(r), where V(r) = sgn(q)r^q. If N \\geq 2, then q > -2, and if N = 1, then q > -1. The discrete eigenvalues E_{n\\ell} may be represented exactly by the semiclassical expression E_{n\\ell}(q) = min_{r>0}\\{P_{n\\ell}(q)^2/r^2+ V(r)}. The case q = 0 corresponds to V(r) = ln(r). By writing one power as a smooth transformation of another, and using envelope theory, it has earlier been proved that the P_{n\\ell}(q) functions are monotone increasing. Recent refinements to the comparison theorem of QM in which comparison potentials can cross over, allow us to prove for n = 1 that Q(q)=Z(q)P(q) is monotone increasing, even though the factor Z(q)=(1+q/N)^{1/q} is monotone decreasing. Thus P(q) cannot increase too slowly. This result yields some sharper estimates for power-potential eigenvlaues at the bottom of each angular-momentum subspace.

  13. Rotating black hole solutions with quintessential energy

    E-Print Network [OSTI]

    Toshmatov, Bobir; Ahmedov, Bobomurat

    2015-01-01

    Quintessential dark energy with density $\\rho$ and pressure $p$ is governed by an equation of state of the form $p=-\\omega_{q}\\rho$ with the quintessential parameter $\\omega_q\\in(-1;-1/3)$. We derive the geometry of quintessential rotating black holes, generalizing thus the Kerr spacetimes. Then we study the quintessential rotating black hole spacetimes with the special value of $\\omega_q = -2/3$ when the resulting formulae are simple and easily tractable. We show that such special spacetimes can exist for dimensionless quintessential parameter $c<1/6$ and determine the critical rotational parameter $a_0$ separating the black hole and naked singularity spacetime in dependence on the quintessential parameter $c$. For the spacetimes with $\\omega_q = 2/3$ we present the integrated geodesic equations in separated form and study in details the circular geodetical orbits. We give radii and parameters of the photon circular orbits, marginally bound and marginally stable orbits. We stress that the outer boundary o...

  14. The E00-110 experiment in Jefferson Lab's Hall A: Deeply Virtual Compton Scattering off the Proton at 6 GeV

    E-Print Network [OSTI]

    M. Defurne; M. Amaryan; K. A. Aniol; M. Beaumel; H. Benaoum; P. Bertin; M. Brossard; A. Camsonne; J. -P. Chen; E. Chudakov; B. Craver; F. Cusanno; C. W. de Jager; A. Deur; R. Feuerbach; C. Ferdi; J. -M. Fieschi; S. Frullani; E. Fuchey; M. Garcon; F. Garibaldi; O. Gayou; G. Gavalian; R. Gilman; J. Gomez; P. Gueye; P. A. M. Guichon; B. Guillon; O. Hansen; D. Hayes; D. Higinbotham; T. Holmstrom; C. E. Hyde; H. Ibrahim; R. Igarashi; X. Jiang; H. S. Jo; L. J. Kaufman; A. Kelleher; C. Keppel; A. Kolarkar; E. Kuchina; G. Kumbartzki; G. Laveissière; J. J. LeRose; R. Lindgren; N. Liyanage; H. -J. Lu; D. J. Margaziotis; M. Mazouz; Z. -E. Meziani; K. McCormick; R. Michaels; B. Michel; B. Moffit; P. Monaghan; C. Muñoz Camacho; S. Nanda; V. Nelyubin; R. Paremuzyan; M. Potokar; Y. Qiang; R. D. Ransome; J. -S. Réal; B. Reitz; Y. Roblin; J. Roche; F. Sabatié; A. Saha; S. Sirca; K. Slifer; P. Solvignon; R. Subedi; V. Sulkosky; P. E. Ulmer; E. Voutier; K. Wang; L. B. Weinstein; B. Wojtsekhowski; X. Zheng; L. Zhu

    2015-04-21

    We present final results on the photon electroproduction ($\\vec{e}p\\rightarrow ep\\gamma$) cross section in the deeply virtual Compton scattering (DVCS) regime and the valence quark region from Jefferson Lab experiment E00-110. Results from an analysis of a subset of these data were published before, but the analysis has been improved which is described here at length, together with details on the experimental setup. Furthermore, additional data have been analyzed resulting in photon electroproduction cross sections at new kinematic settings, for a total of 588 experimental bins. Results of the $Q^2$- and $x_B$-dependences of both the helicity-dependent and helicity-independent cross sections are discussed. The $Q^2$-dependence illustrates the dominance of the twist-2 handbag amplitude in the kinematics of the experiment, as previously noted. Thanks to the excellent accuracy of this high luminosity experiment, it becomes clear that the unpolarized cross section shows a significant deviation from the Bethe-Heitler process in our kinematics, compatible with a large contribution from the leading twist-2 DVCS$^2$ term to the photon electroproduction cross section. The necessity to include higher-twist corrections in order to fully reproduce the shape of the data is also discussed. The DVCS cross sections in this paper represent the final set of experimental results from E00-110, superseding the previous publication.

  15. Trends in U.S. Venture Capital Investments Related to Energy: 1980 through the Third Quarter of 2010

    SciTech Connect (OSTI)

    Dooley, James J.

    2010-11-08

    This report documents trends in U.S. venture capital investments over the period 1980 through the third quarter of calendar year 2010 (2010 Q1+Q2+Q3). Particular attention is given to U.S. venture capital investments in the energy/industrial sector over the period 1980-2010 Q1+Q2+Q3 as well as in the more recently created cross-cutting category of CleanTech over the period 1995-2010 Q1+Q2+Q3. During the early 1980s, U.S. venture capital investments in the energy/industrial sector accounted for more than 20% of all venture capital investments. However subsequent periods of low energy prices, the deregulation of large aspects of the energy industry, and the emergence of fast growing new industries like computers (both hardware and software), biotechnology and the Internet quickly reduced the priority accorded to energy/industrial investments. To wit, venture capital investments related to the energy/industrial sector accounted for only 1% of the $132 billion (in real 2010 US$) invested in 2000 by the U.S. venture capital community. The significant increase in the real price of oil that began in 2003-2004 correlates with renewed interest and increased investment by the venture capital community in energy/industrial investment opportunities. Venture capital investments for 2009 for the energy/industrial sector accounted for $2.4 billion or slightly more than 13% of all venture capital invested that year. The total venture capital invested in energy/industrial during the first three quarters of 2010 is close to $2.4 billion accounting for slightly less than 15% of all venture capital investments during the first three quarters of 2010. In 2009, the aggregate amount invested in CleanTech was $2.1 billion (11% of the total US venture capital invested in that lean year) and for the first three quarters of 2010 US venture capital investments in CleanTech have already exceeded $2.8 billion (18% of all US venture capital investments made during the first three quarters of 2010). Between 2004 and 2009, U.S. venture capital investments in energy/industrial as well as CleanTech have more than quadrupled in real terms.

  16. Demonstration of a novel technique to measure two-photon exchange effects in elastic e±p scattering

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Moteabbed, Maryam [Florida Institute of Technology; Niroula, Megh [Old Dominion University; Raue, Brian [Florida International University; Weinstein, Lawrence [Old Dominion University

    2013-08-01

    The discrepancy between proton electromagnetic form factors extracted using unpolarized and polarized scattering data is believed to be a consequence of two-photon exchange (TPE) effects. However, the calculations of TPE corrections have significant model dependence, and there is limited direct experimental evidence for such corrections. The TPE contributions depend on the sign of the lepton charge in e±p scattering, but the luminosities of secondary positron beams limited past measurement at large scattering angles, where the TPE effects are believe to be most significant. We present the results of a new experimental technique for making direct e±p comparisons, which has the potential to make precise measurements over a broad range in Q2 and scattering angles. We use the Jefferson Laboratory electron beam and the Hall B photon tagger to generate a clean but untagged photon beam. The photon beam impinges on a converter foil to generate a mixed beam of electrons, positrons, and photons. A chicane is used to separate and recombine the electron and positron beams while the photon beam is stopped by a photon blocker. This provides a combined electron and positron beam, with energies from 0.5 to 3.2 GeV, which impinges on a liquid hydrogen target. The large acceptance CLAS detector is used to identify and reconstruct elastic scattering events, determining both the initial lepton energy and the sign of the scattered lepton. The data were collected in two days with a primary electron beam energy of only 3.3 GeV, limiting the data from this run to smaller values of Q2 and scattering angle. Nonetheless, this measurement yields a data sample for e±p with statistics comparable to those of the best previous measurements. We have shown that we can cleanly identify elastic scattering events and correct for the difference in acceptance for electron and positron scattering. Because we ran with only one polarity for the chicane, we are unable to study the difference between the incoming electron and positron beams. This systematic effect leads to the largest uncertainty in the final ratio of positron to electron scattering: R=1.027±0.005±0.05 for 2 >=0.206 GeV2 and 0.830 ? ? ? 0.943. We have demonstrated that the tertiary e± beam generated using this technique provides the opportunity for dramatically improved comparisons of e±p scattering, covering a significant range in both Q2 and scattering angle. Combining data with different chicane polarities will allow for detailed studies of the difference between the incoming e+ and e- beams.

  17. Demonstration of a novel technique to measure two-photon exchange effects in elastic e±p scattering

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Moteabbed, Maryam; Niroula, Megh; Raue, Brian A.; Weinstein, Lawrence B.

    2013-08-30

    The discrepancy between proton electromagnetic form factors extracted using unpolarized and polarized scattering data is believed to be a consequence of two-photon exchange (TPE) effects. However, the calculations of TPE corrections have significant model dependence, and there is limited direct experimental evidence for such corrections. The TPE contributions depend on the sign of the lepton charge in e±p scattering, but the luminosities of secondary positron beams limited past measurement at large scattering angles, where the TPE effects are believe to be most significant. We present the results of a new experimental technique for making direct e±p comparisons, which has themore »potential to make precise measurements over a broad range in Q2 and scattering angles. We use the Jefferson Laboratory electron beam and the Hall B photon tagger to generate a clean but untagged photon beam. The photon beam impinges on a converter foil to generate a mixed beam of electrons, positrons, and photons. A chicane is used to separate and recombine the electron and positron beams while the photon beam is stopped by a photon blocker. This provides a combined electron and positron beam, with energies from 0.5 to 3.2 GeV, which impinges on a liquid hydrogen target. The large acceptance CLAS detector is used to identify and reconstruct elastic scattering events, determining both the initial lepton energy and the sign of the scattered lepton. The data were collected in two days with a primary electron beam energy of only 3.3 GeV, limiting the data from this run to smaller values of Q2 and scattering angle. Nonetheless, this measurement yields a data sample for e±p with statistics comparable to those of the best previous measurements. We have shown that we can cleanly identify elastic scattering events and correct for the difference in acceptance for electron and positron scattering. Because we ran with only one polarity for the chicane, we are unable to study the difference between the incoming electron and positron beams. This systematic effect leads to the largest uncertainty in the final ratio of positron to electron scattering: R=1.027±0.005±0.05 for 2 >=0.206 GeV2 and 0.830 ? ? ? 0.943. We have demonstrated that the tertiary e± beam generated using this technique provides the opportunity for dramatically improved comparisons of e±p scattering, covering a significant range in both Q2 and scattering angle. Combining data with different chicane polarities will allow for detailed studies of the difference between the incoming e+ and e- beams.« less

  18. Energy Efficiency and Conservation Block Grant (EECBG): Better Buildings Neighborhood Program Final Report

    SciTech Connect (OSTI)

    Donnelly, Kat A.

    2014-01-10

    The Neighbor to Neighbor Energy Challenge (N2N) brought together a consortium of 14 leading clean energy rural, suburban, and low income communities throughout Connecticut. N2N was awarded $4.2 million from the U.S. Department of Energy (DOE) competitive BetterBuildings Neighborhood Program on August 10, 2010 to run a two-year pilot program (plus one year of transition and evaluation) (Award No. EMCBC- 00969-10). N2N tested innovative program models and hypotheses for improving Connecticut’s existing residential energy efficiency programs that are overseen by the ratepayer fund board and administered by CT utilities. N2N’s original goal was to engage 10 percent of households in participating communities to reduce their energy usage by 20 percent through energy upgrades and clean energy measures. N2N planned for customers to complete more comprehensive whole-home energy efficiency and clean energy measures and to achieve broader penetration than existing utility-administered regulated programs. Since this was an ARRA award, we report the following figures on job creation in Table 1. Since N2N is not continuing in its current form, we do not provide figures on job retention. Table 1 N2N Job Creation by Quarter Jobs Created 2010 Q4 6.65 2011 Q1 7.13 2011 Q2 4.98 2011 Q3 9.66 2011 Q4 5.43 2012 Q1 11.11 2012 Q2 6.85 2012 Q3 6.29 2012 Q4 6.77 2013 Q1 5.57 2013 Q2 8.35 2013 Q3 6.52 Total 85.31 The N2N team encountered several gaps in the existing efficiency program performance that hindered meeting N2N’s and DOE’s short-term program goals, as well as the State of Connecticut’s long-term energy, efficiency, and carbon reduction goals. However, despite the slow program start, N2N found evidence of increasing upgrade uptake rates over time, due to delayed customer action of one to two years from N2N introduction to completion of deeper household upgrades. Two main social/behavioral principles have contributed to driving deeper upgrades in CT: 1. Word of mouth, where people share their experience with others, which leads to others to take action; and 2. Self-herding, where people follow past behavior, which leads to deeper and deeper actions within individual households.

  19. Trends in U.S. Venture Capital Investments Related to Energy: 1980 through the Second Quarter of 2010

    SciTech Connect (OSTI)

    Dooley, James J.

    2010-07-29

    This report documents trends in U.S. venture capital investments over the period 1980 through the second quarter of calendar year 2010 (2010Q1+Q2). Particular attention is given to U.S. venture capital investments in the energy/industrial sector over the period 1980-2010Q1+Q2 as well as in the more recently created cross-cutting category of CleanTech over the period 1995-2010Q1+Q2. During the early 1980s, U.S. venture capital investments in the energy/industrial sector accounted for more than 20% of all venture capital investments. However subsequent periods of low energy prices, the deregulation of large aspects of the energy industry, and the emergence of fast growing new industries like computers (both hardware and software), biotechnology and the Internet quickly reduced the priority accorded to energy/industrial investments. To wit, venture capital investments related to the energy/industrial sector accounted for only 1% of the $119 billion dollars invested in 2000 by the U.S. venture capital community. The significant increase in the real price of oil that began in 2003-2004 correlates with renewed interest and increased investment by the venture capital community in energy/industrial investment opportunities. Venture capital investments for 2009 for the energy/industrial sector accounted for $2.1 billion or slightly more than 13% of all venture capital invested that year. The total venture capital invested in energy/industrial during the first two quarters of 2010 is close to $1.8 billion accounting for 17% of all venture capital investments during the first two quarters of 2010. In 2009, the aggregate amount invested in CleanTech was $1.8 billion (30% of the total US venture capital invested in that lean year) and for the first two quarters of 2010 US venture capital investments in CleanTech have already exceeded $1.9 billion (19% of all US venture capital investments made during the first half of 2010). Between 2004 and 2009, U.S. venture capital investments in energy/industrial as well as CleanTech have more than quadrupled in real terms.

  20. Precision Measurements of $A_1^n$ in the Deep Inelastic Regime

    E-Print Network [OSTI]

    D. S. Parno; D. Flay; M. Posik; K. Allada; W. Armstrong; T. Averett; F. Benmokhtar; W. Bertozzi; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; S. Choi; E. Chudakov; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; X. Deng; A. Deur; C. Dutta; L. El Fassi; G. B. Franklin; M. Friend; H. Gao; F. Garibaldi; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; J. Gomez; L. Guo; O. Hansen; D. W. Higinbotham; T. Holmstrom; J. Huang; C. Hyde; H. F. Ibrahim; X. Jiang; G. Jin; J. Katich; A. Kelleher; A. Kolarkar; W. Korsch; G. Kumbartzki; J. J. LeRose; R. Lindgren; N. Liyanage; E. Long; A. Lukhanin; V. Mamyan; D. McNulty; Z. -E. Meziani; R. Michaels; M. Mihovilovi?; B. Moffit; N. Muangma; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Nuruzzaman; Y. Oh; J. C. Peng; X. Qian; Y. Qiang; A. Rakhman; S. Riordan; A. Saha; B. Sawatzky; M. H. Shabestari; A. Shahinyan; S. Širca; P. Solvignon; R. Subedi; V. Sulkosky; W. A. Tobias; W. Troth; D. Wang; Y. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. Zhang; Y. -W. Zhang; B. Zhao; X. Zheng

    2014-12-14

    We have performed precision measurements of the double-spin virtual-photon asymmetry $A_1$ on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range $0.277 \\leq x \\leq 0.548$ at an average $Q^2$ value of 3.078~(GeV/c)$^2$, doubling the available high-precision neutron data in this $x$ range. We have combined our results with world data on proton targets to extract the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with a previous observation of an $A_1^n$ zero crossing near $x=0.5$. We find no evidence of a transition to a positive slope in $(\\Delta d + \\Delta \\bar{d})/(d + \\bar{d})$ up to $x=0.548$.

  1. Multicanonical Simulations Step by Step

    E-Print Network [OSTI]

    Bernd A. Berg

    2002-08-09

    The purpose of this article is to provide a starter kit for multicanonical simulations in statistical physics. Fortran code for the $q$-state Potts model in $d=2, 3,...$ dimensions can be downloaded from the Web and this paper describes simulation results, which are in all details reproducible by running prepared programs. To allow for comparison with exact results, the internal energy, the specific heat, the free energy and the entropy are calculated for the $d=2$ Ising ($q=2$) and the $q=10$ Potts model. % in a temperature range from $T=\\infty$ down to sufficiently low % temperatures, such that the groundstates are included in the sampling. Analysis programs, relying on an all-log jackknife technique, which is suitable for handling sums of very large numbers, are introduced to calculate our final estimators.

  2. Measurement of double-polarization asymmetries in the quasi-elastic 3He(e,e'd) process

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mihovilovic, M; Jin, G; Long, E; Zhang, Y -W; Allada, K; Anderson, B; Annand, J R.M.; Averett, T; Boeglin, W; Bradshaw, P; et al

    2014-12-01

    We present a precise measurement of double-polarization asymmetries in the 3He(e,e'd) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in 3He and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasi-elastic kinematics at Q2=0.25(GeV/c)2 for missing momenta up to 270MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on pm and omega, but are systematically offset. Beyond the region of the quasi-elastic peak, the discrepancies become even more pronounced. Thus, our measurements have been able to reveal deficiencies in the mostmore »sophisticated calculations of the three-body nuclear system, and indicate that further refinement in the treatment of their two- and/or three-body dynamics is required.« less

  3. Measurement of the neutron F2 structure function via spectator tagging with CLAS

    E-Print Network [OSTI]

    N. Baillie; S. Tkachenko; J. Zhang; P. Bosted; S. Bultmann; M. E. Christy; H. Fenker; K. A. Griffioen; C. E. Keppel; S. E. Kuhn; W. Melnitchouk; V. Tvaskis; K. P. Adhikari; D. Adikaram; M. Aghasyan; M. J. Amaryan; M. Anghinolfini; J. Arrington; H. Avakian; H. Baghdasaryan; M. Battaglieri; A. S. Biselli; 5 D. Branford; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; P. L. Cole; M. Contalbrigo; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; B. Dey; C. Djalali; G. Dodge; J. Domingo; D. Doughty; R. Dupre; D. Dutta; R. Ent; H. Egiyan; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; A. Fradi; M. Y. Gabrielyan; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; W. Gohn; E. Golovatch; R. W. Gothe; L. Graham; B. Guegan; M. Guidal; N. Guler; L. Guo; K. Hafidi; D. Heddle; K. Hicks; M. Holtrop; E. Hungerford; C. E. Hyde; Y. Ilieva; D. G. Ireland; M. Ispiryan; E. L. Isupov; S. S. Jawalkar; H. S. Jo; N. Kalantarians; M. Khandaker; P. Khetarpal; A. Kim; W. Kim; P. M. King; A. Klein; F. J. Klein; A. Klimenko; V. Kubarovsky; S. V. Kuleshov; N. D. Kvaltine; K. Livingston; H. Y. Lu; I . J . D. MacGregor; Y. Mao; N. Markov; B. McKinnon; T. Mineeva; B. Morrison; H. Moutarde; E. Munevar; P. Nadel-Turonski; A. Ni; S. Niccolai; I. Niculescu; G. Niculescu; M. Osipenko; A. I. Ostrovidov; L. Pappalardo; K. Park; S. Park; E. Pasyuk; S. Anefalos Pereira; S. Pisano; S. Pozdniakov; J. W. Price; S. Procureur; Y. Prok; D. Protopopescu; B. A. Raue; G. Ricco; D. Rimal; M. Ripani; G. Rosner; P. Rossi; F. Sabatie; M. S. Saini; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; Y. G. Sharabian; D. I. Sober; D. Sokhan; S. Stepanyan; S. S. Stepanyan; P. Stoler; S. Strauch; M. Taiuti; W. Tang; M. Ungaro; M. F. Vineyard; E. Voutier; D. P. Watts; L. B. Weinstein; D. P. Weygand; M. H. Wood; L. Zana; B. Zhao

    2012-05-14

    We report on the first measurement of the F2 structure function of the neutron from semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to < 100 MeV and their angles to < 100 degrees relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The F2n data collected cover the nucleon resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65 < Q2 < 4.52 GeV2, with uncertainties from nuclear corrections estimated to be less than a few percent. These measurements provide the first determination of the neutron to proton structure function ratio F2n/F2p at 0.2 < x < 0.8 with little uncertainty due to nuclear effects.

  4. Measurement of pretzelosity asymmetry of charged pion production in Semi-Inclusive Deep Inelastic Scattering on a polarized $^3$He target

    E-Print Network [OSTI]

    Y. Zhang; X. Qian; K. Allada; C. Dutta; J. Huang; J. Katich; Y. Wang; K. Aniol; J. R. M. Annand; T. Averett; F. Benmokhtar; W. Bertozzi; P. C. Bradshaw; P. Bosted; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; W. Chen; K. Chirapatpimol; E. Chudakov; E. Cisbani; J. C. Cornejo; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; R. De Leo; X. Deng; A. Deur; H. Ding; P. A. M. Dolph; D. Dutta; L. El Fassi; S. Frullani; H. Gao; F. Garibaldi; D. Gaskell; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; L. Guo; D. Hamilton; O. Hansen; D. W. Higinbotham; T. Holmstrom; M. Huang; H. F. Ibrahim; M. Iodice; X. Jiang; G. Jin; M. K. Jones; A. Kelleher; W. Kim; A. Kolarkar; W. Korsch; J. J. LeRose; X. Li; Y. Li; R. Lindgren; N. Liyanage; E. Long; H. -J. Lu; D. J. Margaziotis; P. Markowitz; S. Marrone; D. McNulty; Z. -E. Meziani; R. Michaels; B. Moffit; C. Muñoz Camacho; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Y. Oh; M. Osipenko; D. Parno; J. C. Peng; S. K. Phillips; M. Posik; A. J. R. Puckett; Y. Qiang; A. Rakhman; R. D. Ransome; S. Riordan; A. Saha; B. Sawatzky; E. Schulte; A. Shahinyan; M. H. Shabestari; S. Sirca; S. Stepanyan; R. Subedi; V. Sulkosky; L. -G. Tang; W. A. Tobias; G. M. Urciuoli; I. Vilardi; K. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. -W. Zhang; B. Zhao; X. Zheng; L. Zhu; X. Zhu; X. Zong

    2013-12-15

    An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized $^3$He target was performed at Jefferson Lab in the kinematic region of $0.16Q^2<2.7$ ${\\rm GeV^2}$. The pretzelosity asymmetries on $^3$He, which can be expressed as the convolution of the $h^\\perp_{1T}$ transverse momentum dependent distribution functions and the Collins fragmentation functions in the leading order, were measured for the first time. Using the effective polarization approximation, we extracted the corresponding neutron asymmetries from the measured $^3$He asymmetries and cross-section ratios between the proton and $^3$He. Our results show that for both $\\pi^{\\pm}$ on $^3$He and on the neutron the pretzelosity asymmetries are consistent with zero within experimental uncertainties.

  5. Photoproduction of a ??Pair and Transversity GPDs

    E-Print Network [OSTI]

    M. El Beiyad; B. Pire; L. Szymanowski; S. Wallon

    2010-07-16

    We demonstrate that the chiral-odd transversity generalized parton distributions (GPDs) of the nucleon can be accessed through the exclusive photoproduction process gamma + N -> pi + rho + N', in the kinematics where the meson pair has a large invariant mass and the final nucleon has a small transverse momentum, provided the vector meson is produced in a transversely polarized state. We calculate perturbatively the scattering amplitude at leading order in alpha_s: We build a simple model for the dominant transversity GPD HT (x; chi; t) based on the concept of double distribution. Counting rates estimates show that the experiment looks feasible with the real photon beam characteristics expected at JLab@12 GeV, in low Q2 leptoproduction at Jlab@12 GeV and in the COMPASS experiment.

  6. The study of the photon structure function at the ILC energy range

    E-Print Network [OSTI]

    B. Krupa; T. Wojto?; L. Zawiejski

    2015-03-26

    At the future $e^{+}e^{-}$ linear collider ILC/CLIC it will be able to measure the photon structure functions in a wider range of kinematic variables x and $Q^{2}$ in comparison to the previous results of experiments at LEP. The classical way to measure the photon structure functions is the study of $e^{+}e^{-} \\rightarrow e^{+}e^{-} {\\gamma}{\\gamma} \\rightarrow e^{+}e^{-}$ X process, where X is the leptonic or hadronic final state. For the study of the QED and hadronic photon structure functions the simulations of two-photon processes were performed at the ILC center-of-mass energy equal to 500 GeV using the PYTHIA and the ILCSoft package. The analysis used information related to the forward detectors, tracking detectors and calorimeters which are parts of the ILD detector concept.

  7. Strange Electric Form Factor of the Proton

    E-Print Network [OSTI]

    D. B. Leinweber; S. Boinepalli; A. W. Thomas; P. Wang; A. G. Williams; R. D. Young; J. M. Zanotti; J. B. Zhang

    2006-07-18

    By combining the constraints of charge symmetry with new chiral extrapolation techniques and recent low-mass quenched lattice QCD simulations of the individual quark contributions to the electric charge radii of the baryon octet, we obtain an accurate determination of the strange electric charge radius of the proton. While this analysis provides a value for G_E^s(Q^2=0.1 GeV^2) in agreement with the best current data, the theoretical error is comparable with that expected from future HAPPEx results from JLab. Together with the earlier determination of G_M^s, this result considerably constrains the role of hidden flavor in the structure of the nucleon.

  8. Suppression MHD instabilities by IBW heating in HT-7 Tokamak

    E-Print Network [OSTI]

    C. M. Qin; Y. P. Zhao; X. J. Zhang; P. Xu; Y. Yang; the HT-7 team

    2010-01-21

    In HT-7 tokamak, the m= 2/1 tearing mode can be effectively suppressed by the ion bernstein wave (IBW) when the location of power deposition is near the q=2 rational surface. Off-axis electron heating and greatly increase of electron density was observed, in the meantime, the particle confinement appears to be improved with the increased of the central line averaged electron density and the drop of Da emission. Induced large ne gradients and pressures were spatially correlated with the IBW deposition profile by theoretical calculation >. It is suggested that off-axis IBW heating modifies the electron pressure profile, and so the current density profile could be redistributed resulting in the suppression of the magnetohydrodynamics (MHD) instability. It provides an integrated way for making combined effects on both the stabilization of tearing modes and controlling of pressure profile.

  9. First photometric study of the very short period K-type contact binary 1SWASP J064501.21+342154.9

    SciTech Connect (OSTI)

    Liu, N.-P.; Qian, S.-B.; Liao, W.-P.; Zhu, L.-Y.; He, J.-J.; Liu, L.; Zhao, E.-G.; Soonthornthum, B.

    2014-02-01

    The first high precision CCD photometric light curves of 1SWASP J064501.21+342154.9 were obtained in 2013 February along with several new times of minimum light. The multi-color light curves were analyzed using the Wilson-Devinney code. Photometric solutions reveal that the system is a W-type shallow contact binary with a mass ratio of q = 2.110 ± 0.007 and a degree of contact of f = 15.3% ± 2.1%. A third light contributing about 2% of the total luminosity in the I band was found. It may come from a cool tertiary component. A small spot found on the surface of the binary indicates that the solar-like activities are at a low level at present.

  10. Order relations and prior distributions in the estimation of multivariate normal parameters with partial data 

    E-Print Network [OSTI]

    Al-Nasir, Abdul Majid Hamza

    1968-01-01

    &t=l (2. 10) Here& the optimulc choice of Prs are to be determined. . Therefol e, cov[a , (a ? ?a, )] 0 imnlies j9 1 [ 22 3 22. o Butr 10 2a 2 12 11' 22 3 22 ] and. Thus 3 2 2o22 2n2 vCa. - a)] = ? (n +n)- 22 322 nr. 4 12 2 11 111 111 2... estimates. As an example: V(pl) = V(li~, ) + o&V(itu P ) + 2o cov F1' 1"1 2~a j 2Q [" + ? "]+ 2u a, (n +n2) 2c 111 1 2 nln2 1 set 0 implies n n1 ' 1 = nl+n2 Therefore: n 2 1 1 1 n +n 1~1 2~1) "1. '"2 (1. 4) Tn a similar fashion n 0 2 1 12 2 1...

  11. Measurement of ep-->ep[pi]0 beam spin asymmetries above the resonance region

    SciTech Connect (OSTI)

    De Masi, Rita; Garcon, Michel; Zhao, Bo; Amaryan, Moscov; Amaryan, Moskov; Ambrozewicz, Pawel; Anghinolfi, Marco; Asryan, Gegham; Avagyan, Harutyun; Baghdasaryan, Hovhannes; Baillie, Nathan; Ball, J.P.; Ball, Jacques; Ball, J.P.; Ball, Jacques; Ball, James; Baltzell, Nathan; Baturin, Vitaly; Battaglieri, Marco; Bedlinskiy, Ivan; Bellis, Matthew; Benmouna, Nawal; Berman, Barry; Bertin, Pierre; Biselli, Angela; Blaszczyk, Lukasz; Bouchigny, Sylvain; Boyarinov, Sergey; Bradford, Robert; Branford, Derek; Briscoe, William; Brooks, William; Bultmann, S.; Bueltmann, Stephen; Bultmann, S.; Bueltmann, Stephen; Burkert, Volker; Butuceanu, Cornel; Calarco, John; Careccia, Sharon; Carman, Daniel; Casey, Liam; Chen, Shifeng; Cheng, Lu; Cole, Philip; Collins, Patrick; Coltharp, Philip; Crabb, Donald; Crede, Volker; Dashyan, Natalya; De Sanctis, Enzo; De Vita, Raffaella; Degtiarenko, Pavel; Deur, Alexandre; Dharmawardane, Kahanawita; Dickson, Richard; Djalali, Chaden; Dodge, Gail; Donnelly, Joseph; Doughty, David; Dugger, Michael; Dzyubak, Oleksandr; Egiyan, Hovanes; Egiyan, Kim; Elfassi, Lamiaa; Elouadrhiri, Latifa; Eugenio, Paul; Fedotov, Gleb; Feldman, Gerald; Fradi, Ahmed; Funsten, Herbert; Gavalian, Gagik; Gilfoyle, Gerard; Giovanetti, Kevin; Girod, Francois-Xavier; Goetz, John; Gonenc, Atilla; Gothe, Ralf; Griffioen, Keith; Guidal, Michel; Guler, Nevzat; Guo, Lei; Gyurjyan, Vardan; Hafidi, Kawtar; Hakobyan, Hayk; Hanretty, Charles; Hersman, F.; Hicks, Kenneth; Hleiqawi, Ishaq; Holtrop, Maurik; Hyde, Charles; Ilieva, Yordanka; Ireland, David; Ishkhanov, Boris; Isupov, Evgeny; Ito, Mark; Jenkins, David; Jo, Hyon-Suk; Johnstone, John; Joo, Kyungseon; Juengst, Henry; Kalantarians, Narbe; Kellie, James; Khandaker, Mahbubul; Kim, Wooyoung; Klein, Andreas; Klein, Franz; Klimenko, Alexei; Kossov, Mikhail; Krahn, Zebulun; Kramer, Laird; Kubarovsky, Valery; Kuhn, Joachim; Kuhn, Sebastian; Kuleshov, Sergey; Lachniet, Jeff; Laget, Jean; Langheinrich, Jorn; Lawrence, David; Lee, Tsung-Shung; Livingston, Kenneth; Lu, Haiyun; MacCormick, Marion; Markov, Nikolai; Mattione, Paul; Mazouz, Malek; McKinnon, Bryan; Mecking, Bernhard; Mestayer, Mac; Meyer, Curtis; Mibe, Tsutomu; Michel, Bernard; Mikhaylov, Konstantin; Mirazita, Marco; Miskimen, Rory; Mokeev, Viktor; Moreno, Brahim; Moriya, Kei; Morrow, Steven; Moteabbed, Maryam; Munevar Espitia, Edwin; Mutchler, Gordon; Nadel-Turonski, Pawel; Nasseripour, Rakhsha; Niccolai, Silvia; Niculescu, Gabriel; Niculescu, Maria-Ioana; Niczyporuk, Bogdan; Niroula, Megh; Niyazov, Rustam; Nozar, Mina; Osipenko, Mikhail; Ostrovidov, Alexander; Park, Kijun; Pasyuk, Evgueni; Paterson, Craig; Pereira, Sergio; Pierce, Joshua; Pivnyuk, Nikolay; Pocanic, Dinko; Pogorelko, Oleg; Pozdnyakov, Sergey; Price, John; Procureur, Sebastien; Prok, Yelena; Protopopescu, Dan; Raue, Brian; Ricco, Giovanni; Ripani, Marco; Ritchie, Barry; Ronchetti, Federico; Rosner, Guenther; Rossi, Patrizia; Sabatie, Franck; Salamanca, Julian; Salgado, Carlos; Santoro, Joseph; Sapunenko, Vladimir; Schumacher, Reinhard; Serov, Vladimir; Sharabian, Youri; Sharov, Dmitri; Shvedunov, Nikolay; Smith, Elton; Smith, Lee; Sober, Daniel; Sokhan, Daria; Stavinsky, Aleksey; Stepanyan, Samuel; Stepanyan, Stepan; Stokes, Burnham; Stoler, Paul; Strakovski, Igor; Strauch, Steffen; Taiuti, Mauro; Tedeschi, David; Tkabladze, Avtandil; Tkachenko, Svyatoslav; Tur, Clarisse; Ungaro, Maurizio; Vineyard, Michael; Vlassov, Alexander; Voutier, Eric; Watts, Daniel; Weinstein, Lawrence; Weygand, Dennis; Williams, Michael; Wolin, Elliott; Wood, Michael; Yegneswaran, Amrit; Zana, Lorenzo; Zhang, Jixie; Zhao, Zhiwen

    2008-04-01

    The beam spin asymmetry (BSA) in the exclusive reaction e-vector p-->eppi0 was measured with the CEBAF 5.77 GeV polarized electron beam and Large Acceptance Spectrometer (CLAS). The xB,Q2,t, and phi dependences of the pi0 BSA are presented in the deep inelastic regime. The asymmetries are fitted with a sinphi function and their amplitudes are extracted. Overall, they are of the order of 0.04â 0.11 and roughly independent of t. This is the signature of a nonzero longitudinal-transverse interference. The implications concerning the applicability of a formalism based on generalized parton distributions, as well as the extension of a Regge formalism at high photon virtualities, are discussed.

  12. Measurement of the EMC effect in the deuteron

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Griffioen, Keith A.; Arrington, John R.; Christy, M. Eric; Ent, Rolf; Kalantarians, Narbe; Keppel, Cynthia E.; Kuhn, Sebastian E.; Melnitchouk, Wally; Niculescu, Gabriel; Niculescu, Ioana; et al

    2015-07-01

    We have determined the structure function ratio $R^d_{\\rm EMC}=F_2^d/(F_2^n+F_2^p)$ from recently published $F_2^n/F_2^d$ data taken by the BONuS experiment using CLAS at Jefferson Lab. This ratio deviates from unity, with a slope $dR_{\\rm EMC}^{d}/dx= -0.10\\pm 0.05$ in the range of Bjorken $x$ from 0.35 to 0.7, for invariant mass $W>1.4$ GeV and $Q^2>1$ GeV$^2$. The observed EMC effect for these kinematics is consistent with conventional nuclear physics models that include off-shell corrections, as well as with empirical analyses that find the EMC effect proportional to the probability of short-range nucleon-nucleon correlations.

  13. Power Corrections to Fragmentation Functions in Non-Singlet Deep Inelastic Scattering

    E-Print Network [OSTI]

    M. Dasgupta; G. E. Smye; B. R. Webber

    1998-03-18

    We investigate the power-suppressed corrections to the fragmentation functions of the current jet in non-singlet deep inelastic lepton-hadron scattering. The current jet is defined by selecting final-state particles in the current hemisphere in the Breit frame of reference. Our method is based on an analysis of one-loop Feynman graphs containing a massive gluon, which is equivalent to the evaluation of leading infrared renormalon contributions. We find that the leading corrections are proportional to $1/Q^2$, as in $e^+e^-$ annihilation, but their functional forms are different. We give quantitative estimates based on the hypothesis of universal low-energy behaviour of the strong coupling.

  14. Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_T$

    E-Print Network [OSTI]

    Adolph, C.; The COMPASS collaboration; Alexeev, M.G.; Alexeev, G.D.; Amoroso, A.; Andrieux, V.; Anosov, V.; Augustyniak, W.; Austregesilo, A.; Azevedo, C.; Badelek, B.; Balestra, F.; Barth, J.; Beck, R.; Bedfer, Y.; Bernhard, J.; Bicker, K.; Bielert, E.R.; Birsa, R.; Bisplinghoff, J.; Bodlak, M.; Boer, M.; Bordalo, P.; Bradamante, F.; Braun, C.; Bressan, A.; Buechele, M.; Burtin, E.; Chang, W.-C.; Chiosso, M.; Choi, I.; Chung, S.-U.; Cicuttin, A.; Crespo, M.L.; Curiel, Q.; d’Hose, N.; Dalla Torre, S.; Dasgupta, S.S.; Dasgupta, S.; Denisov, O.Yu.; Dhara, L.; Donskov, S.V.; Doshita, N.; Duic, V.; Dünnweber, W.; Dziewiecki, M.; Efremov, A.; Eversheim, P.D.; Eyrich, W.; Faessler, M.; Ferrero, A.; Finger, M.; Finger jr., M.; Fischer, H.; Franco, C.; du Fresne von Hohenesche, N.; Friedrich, J.M.; Frolov, V.; Fuchey, E.; Gautheron, F.; Gavrichtchouk, O.P.; Gerassimov, S.; Giordano, F.; Gnesi, I.; Gorzellik, M.; Grabmüller, S.; Grasso, A.; Grosse-Perdekamp, M.; Grube, B.; Grussenmeyer, T.; Guskov, A.; Haas, F.; Hahne, D.; von Harrach, D.; Hashimoto, R.; Heinsius, F.H.; Herrmann, F.; Hinterberger, F.; Horikawa, N.; Hsieh, C.-Yu; Huber, S.; Ishimoto, S.; Ivanov, A.; Ivanshin, Yu.; Iwata, T.; Jahn, R.; Jary, V.; Jörg, P.; Joosten, R.; Kabuss, E.; Ketzer, B.; Khaustov, G.V.; Khokhlov, Yu.A.; Kisselev, Yu.; Klein, F.; Klimaszewski, K.; Koivuniemi, J.H.; Kolosov, V.N.; Kondo, K.; Koenigsmann, K.; Konorov, I.; Konstantinov, V.F.; Kotzinian, A.M.; Kouznetsov, O.; Kraemer, M.; Kremser, P.; Krinner, F.; Kroumchtein, Z.V.; Kuchinskiy, N.; Kuhn, R.; Kunne, F.; Kurek, K.; Kurjata, R.P.; Lednev, A.A.; Lehmann, A.; Levillain, M.; Levorato, S.; Lichtenstadt, J.; Longo, R.; Maggiora, A.; Magnon, A.; Makins, N.; Makke, N.; Mallot, G.K.; Marchand, C.; Marianski, B.; Martin, A.; Marzec, J.; Matousek, J.; Matsuda, H.; Matsuda, T.; Meshcheryakov, G.; Meyer, W.; Michigami, T.; Mikhailov, Yu.V.; Miyachi, Y.; Montuenga, P.; Nagaytsev, A.; Nerling, F.; Neyret, D.; Nikolaenko, V.I.; Novy, J.; Nowak, W.-D.; Nukazuka, G.; Nunes, A.S.; Olshevsky, A.G.; Orlov, I.; Ostrick, M.; Panzieri, D.; Parsamyan, B.; Paul, S.; Peng, J.-C.; Pereira, F.; Pesek, M.; Peshekhonov, D.V.; Platchkov, S.; Pochodzalla, J.; Polyakov, V.A.; Pretz, J.; Quaresma, M.; Quintans, C.; Ramos, S.; Regali, C.; Reicherz, G.; Riedl, C.; Rossiyskaya, N.S.; Ryabchikov, D.I.; Rychter, A.; Samoylenko, V.D.; Sandacz, A.; Santos, C.; Sarkar, S.; Savin, I.A.; Sbrizzai, G.; Schiavon, P.; Schlüuter, T.; Schmidt, K.; Schmieden, H.; Schoenning, K.; Schopferer, S.; Selyunin, A.; Shevchenko, O.Yu.; Silva, L.; Sinha, L.; Sirtl, S.; Slunecka, M.; Sozzi, F.; Srnka, A.; Stolarski, M.; Sulc, M.; Suzuki, H.; Szabelski, A.; Szameitat, T.; Sznajder, P.; Takekawa, S.; ter Wolbeek, J.; Tessaro, S.; Tessarotto, F.; Thibaud, F.; Tosello, F.; Tskhay, V.; Uhl, S.; Veloso, J.; Virius, M.; Weisrock, T.; Wilfert, M.; Zaremba, K.; Zavertyaev, M.; Zemlyanichkina, E.; Ziembicki, M.; Zink, A.

    2015-01-01

    We measured the longitudinal double spin asymmetries $A_{LL}$ for single hadron muo-production off protons and deuterons at photon virtuality $Q^2$ range 0.7 GeV/$\\it c$ to 4 GeV/$\\it c$. They were determined using COMPASS data taken with a polarised muon beam of 160 GeV/$\\it c$ or 200 GeV/$\\it c$ impinging on polarised $\\mathrm{{}^6LiD}$ or $\\mathrm{NH_3}$ targets. The experimental asymmetries are compared to next-to-leading order pQCD calculations, and are sensitive to the gluon polarisation $\\Delta G$ inside the nucleon in the range of the nucleon momentum fraction carried by gluons $0.05 < x_g < 0.2$.

  15. Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_T$

    E-Print Network [OSTI]

    Adolph, C; Alexeev, M G; Alexeev, G D; Amoroso, A; Andrieux, V; Anosov, V; Augustyniak, W; Austregesilo, A; Azevedo, C D R; Bade?ek, B; Balestra, F; Barth, J; Beck, R; Bedfer, Y; Bernhard, J; Bicker, K; Bielert, E R; Birsa, R; Bisplinghoff, J; Bodlak, M; Boer, M; Bordalo, P; Bradamante, F; Braun, C; Bressan, A; Büchele, M; Burtin, E; Chang, W-C; Chiosso, M; Choi, I; Chung, S U; Cicuttin, A; Crespo, M L; Curiel, Q; Dalla Torre, S; Dasgupta, S S; Dasgupta, S; Denisov, O Yu; Dhara, L; Donskov, S V; Doshita, N; Duic, V; Dünnweber, W; Dziewiecki, M; Efremov, A; Eversheim, P D; Eyrich, W; Faessler, M; Ferrero, A; Finger, M; Finger jr , M; Fischer, H; Franco, C; du Fresne von Hohenesche, N; Friedrich, J M; Frolov, V; Fuchey, E; Gautheron, F; Gavrichtchouk, O P; Gerassimov, S; Giordano, F; Gnesi, I; Gorzellik, M; Grabmüller, S; Grasso, A; Grosse Perdekamp, M; Grube, B; Grussenmeyer, T; Guskov, A; Haas, F; Hahne, D; von Harrach, D; Hashimoto, R; Heinsius, F H; Herrmann, F; Hinterberger, F; Horikawa, N; d’Hose, N; Hsieh, C-Y; Huber, S; Ishimoto, S; Ivanov, A; Ivanshin, Yu; Iwata, T; Jahn, R; Jary, V; Joosten, R; Jörg, P; Kabuß, E; Ketzer, B; Khaustov, G V; Khokhlov, Yu A; Kisselev, Yu; Klein, F; Klimaszewski, K; Koivuniemi, J H; Kolosov, V N; Kondo, K; Königsmann, K; Konorov, I; Konstantinov, V F; Kotzinian, A M; Kouznetsov, O; Krämer, M; Kremser, P; Krinner, F; Kroumchtein, Z V; Kuchinski, N; Kuhn, R; Kunne, F; Kurek, K; Kurjata, R P; Lednev, A A; Lehmann, A; Levillain, M; Levorato, S; Lichtenstadt, J; Longo, R; Maggiora, A; Magnon, A; Makins, N; Makke, N; Mallot, G K; Marchand, C; Marianski, B; Martin, A; Marzec, J; Matoušek, J; Matsuda, H; Matsuda, T; Meshcheryakov, G; Meyer, W; Michigami, T; Mikhailov, Yu V; Miyachi, Y; Montuenga, P; Nagaytsev, A; Nerling, F; Neyret, D; Nikolaenko, V I; Nový, J; Nowak, W-D; Nukazuka, G; Nunes, A S; Olshevsky, A G; Orlov, I; Ostrick, M; Panzieri, D; Parsamyan, B; Paul, S; Peng, J-C; Pereira, F; Pešek, M; Peshekhonov, D V; Platchkov, S; Pochodzalla, J; Polyakov, V A; Pretz, J; Quaresma, M; Quintans, C; Ramos, S; Regali, C; Reicherz, G; Riedl, C; Rossiyskaya, N S; Ryabchikov, D I; Rychter, A; Samoylenko, V D; Sandacz, A; Santos, C; Sarkar, S; Savin, I A; Sbrizzai, G; Schiavon, P; Schmidt, K; Schmieden, H; Schönning, K; Schopferer, S; Selyunin, A; Shevchenko, O Yu; Silva, L; Sinha, L; Sirtl, S; Slunecka, M; Sozzi, F; Srnka, A; Stolarski, M; Sulc, M; Suzuki, H; Szabelski, A; Szameitat, T; Sznajder, P; Takekawa, S; Tessaro, S; Tessarotto, F; Thibaud, F; Tosello, F; Tskhay, V; Uhl, S; Veloso, J; Virius, M; Weisrock, T; Wilfert, M; ter Wolbeek, J; Zaremba, K; Zavertyaev, M; Zemlyanichkina, E; Ziembicki, M; Zink, A

    2015-01-01

    We measured the longitudinal double spin asymmetries $A_{LL}$ for single hadron muo-production off protons and deuterons at photon virtuality $Q^2$ range 0.7 GeV/$\\it c$ to 4 GeV/$\\it c$ . They were determined using COMPASS data taken with a polarised muon beam of 160 GeV/$\\it c$ or 200 GeV/$\\it c$ impinging on polarised $\\mathrm{{}^6LiD}$ or $\\mathrm{NH_3}$ targets. The experimental asymmetries are compared to next-to-leading order pQCD calculations, and are sensitive to the gluon polarisation $\\Delta G$ inside the nucleon in the range of the nucleon momentum fraction carried by gluons $0.05 < x_g < 0.2$.

  16. Towards an improved understanding of eta --> gamma^* gamma^*

    E-Print Network [OSTI]

    Xiao, C W; Hanhart, C; Kubis, B; Meißner, U -G; Wirzba, A

    2015-01-01

    We argue that high-quality data on the reaction $e^+e^-\\to \\pi^+\\pi^-\\eta$ will allow one to determine the double off-shell form factor $\\eta \\to \\gamma^*\\gamma^*$ in a model-independent way with controlled accuracy. This is an important step towards a reliable evaluation of the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon. When analyzing the existing data for $e^+e^- \\to \\pi^+\\pi^-\\eta$ in the range of total energies $1\\text{GeV}^2off-shell form factor $F_{\\eta\\gamma^*\\gamma^*}(Q_1^2,Q_2^2)$ is consistent with the commonly employed factorization ansatz at least for $Q_1^2<1\\text{GeV}^2$, if the effect of the $a_2$ meson is taken into account. However, better data are needed to draw firm conclusions.

  17. Two-Photon Exchange Effect Studied with Neural Networks

    E-Print Network [OSTI]

    Krzysztof M. Graczyk

    2011-08-30

    An approach to the extraction of the two-photon exchange (TPE) correction from elastic $ep$ scattering data is presented. The cross section, polarization transfer (PT), and charge asymmetry data are considered. It is assumed that the TPE correction to the PT data is negligible. The form factors and TPE correcting term are given by one multidimensional function approximated by the feed forward neural network (NN). To find a model-independent approximation the Bayesian framework for the NNs is adapted. A large number of different parametrizations is considered. The most optimal model is indicated by the Bayesian algorithm. The obtained fit of the TPE correction behaves linearly in epsilon but it has a nontrivial Q2 dependence. A strong dependence of the TPE fit on the choice of parametrization is observed.

  18. Electromagnetic Properties for Arbitrary Spin Particles: Part 1 $-$ Electromagnetic Current and Multipole Decomposition

    E-Print Network [OSTI]

    Cédric Lorcé

    2009-01-27

    In a set of two papers, we propose to study an old-standing problem, namely the electromagnetic interaction for particles of arbitrary spin. Based on the assumption that light-cone helicity at tree level and $Q^2=0$ should be conserved non-trivially by the electromagnetic interaction, we are able to derive \\emph{all} the natural electromagnetic moments for a pointlike particle of \\emph{any} spin. In this first paper, we propose a transparent decomposition of the electromagnetic current in terms of covariant vertex functions. We also define in a general way the electromagnetic multipole form factors, and show their relation with the electromagnetic moments. Finally, by considering the Breit frame, we relate the covariant vertex functions to multipole form factors.

  19. Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to High Momentum Transfer

    E-Print Network [OSTI]

    Puckett, Andrew J R

    2015-01-01

    The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electron-nucleon scattering. These form factors are functions of the squared four-momentum transfer $Q^2$ between the electron and the proton. The two main classes of observables of this reaction are the scattering cross section and polarization asymmetries, both of which are sensitive to the form factors in different ways. When considering large momentum transfers, double-polarization observables offer superior sensitivity to the electric form factor. This thesis reports the results of a new measurement of the ratio of the electric and magnetic form factors of the proton at high momentum transfer using the recoil polarization technique. A polarized electron beam was scattered from a liquid hydrogen target, transferring polarization to the recoiling protons. These protons were detected in a magnetic spectrometer which was used to reconstruct their ...

  20. Fluctuations in the two-dimensional one-component plasma and associated fourth-order phase transition

    E-Print Network [OSTI]

    Fabio Deelan Cunden; Anna Maltsev; Francesco Mezzadri

    2015-06-26

    We study the distribution of the mean radial displacement of charges of a 2D one-component plasma in the thermodynamic limit $N\\to\\infty$ at finite temperature $\\beta>0$. We compute explicitly the large deviation functions showing the emergence of a fourth-order phase transition as a consequence of a change of topology in the plasma distribution. This weak phase transition occurs exactly at the ground state of the plasma. These results have been compared with the integrable case (finite $N$) of plasma parameter $\\beta q^2=2$. In this case the problem can be mapped to the stationary properties of 2D Dyson Brownian particles and to a non-Hermitian matrix model.