Sample records for q2 q2 q4

  1. 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 10pts 100pts 10pts This exam has 6 questions and a bonus question, for a total of 100 + 10 bonus the integral. Bonus:(10pts) Decide if the following series is convergent or divergent. n=1 1 n· 1+(lnn)2 Page

  2. New Results from ZEUS on High Q 2 Deep Inelastic

    E-Print Network [OSTI]

    40000 Q 2 min (GeV 2 ) s (pb) (Q 2 > Q 2 min ) ZEUS (33.5 pb ­ 1 / LP97) Standard Model (MRSA) Data

  3. Documentation 2013-2014 Q2

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Laboratory Documentation 2013-2014 Q2 This document contains the sessions that have to be done ............................................................................................. 32 Session 5: Memory management................................................................................................. 45 Session 7:Input/Output management

  4. Multi Jet Production at High Q2

    E-Print Network [OSTI]

    Thomas Kluge

    2005-10-31T23:59:59.000Z

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

    E-Print Network [OSTI]

    Tsujimoto, Satoshi; Zhedanov, Alexei

    2011-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Satoshi Tsujimoto; Luc Vinet; Alexei Zhedanov

    2011-10-07T23:59:59.000Z

    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.

  7. 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf KilaueaInformation Other AlternativePark,CedarPowerViewLomaQ2) Wind

  8. 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]

    installations totaled 723 MW in Q1 2013, up 33% over Q1 2012 Cumulative operating PV capacity in the U.S. now.00/W Concentrating Solar Power (CSP and CPV) 6 MWac of concentrating solar capacity was installed; cumulative operating CSP and CPV capacity in the U.S. now stands at 552 MWac 2013 will see the most CSP

  9. Connection between Second Class Currents and the $?N?$ Form Factors $G_M^*(q^2)$ and $G_E^*(q^2)$

    E-Print Network [OSTI]

    Milton Dean Slaughter

    2004-12-18T23:59:59.000Z

    An interesting connection between the nucleon weak axial-vector second class current form factor $g_{T}(q^{2})$ present in the matrix element $$ and the $\\Delta N\\gamma$ form factors $G_{M}^{\\ast}(q^{2})$ and $G_{E}^{\\ast}(q^{2})$ is derived. Using a nonperturbative, relativistic sum rule approach in the infinite momentum frame, $G_{M}^{\\ast}(q^{2})$ and $G_{E}^{\\ast}(q^{2})$ are calculated in terms of $g_{T}(q^{2})$ and the well-known nucleon isovector Sachs form factor $G_{M}^{V}$ as input with no additional model parameters. Reasonable agreement with the data for $G_{M}^{\\ast}(q^{2})$ may be achieved with a non-zero $g_{T}(q^{2})$ too large to be accommodated in the Standard Model. We surmise that it is plausible that second class current-associated pion cloud effects are playing a significant role in pion electroproduction processes and perhaps must be taken into account in those methodologies which utilize effective Lagrangians.

  10. The $Q^{2}$-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton

    E-Print Network [OSTI]

    Airapetian, A; Akushevich, I V; Amarian, M; Arrington, J; Aschenauer, E C; Avakian, H; Avakian, R; Avetisian, A; Avetissian, E; Bailey, P; Bains, B; Baumgarten, C; Beckmann, M; Belostotskii, S; Bernreuther, S; Bianchi, N; Böttcher, Helmut B; Borisov, A; Bouwhuis, M; Brack, J; Brauksiepe, S; Brauniu, B; Brückner, W; Brüll, A; Budz, P; Bulten, H J; Capitani, G P; Carter, P; Chumney, P; Cisbani, E; Court, G R; Dalpiaz, P F; De Leo, R; De Nardo, L; De Sanctis, E; De Schepper, D; Devitsin, E G; De Witt-Huberts, P K A; Di Nezza, P; Dzhordzhadze, V; Düren, M; Dvoredsky, A P; Elbakian, G M; Ely, J; Fantoni, A; Feshchenko, A; Ferro-Luzziwad, M; Fiedler, K; Filippone, B W; Fischer, H; Fox, B; Franzl, J; Frullani, S; Gärber, Y; Garibaldi, F; Garutti, E; Gavrilov, G E; Karibian, V; Golendukhin, A; Graw, G; Grebenyuk, O; Green, P W; Greeniaus, L G; Gute, A; Haeberli, W; Hartig, M; Hasch, D; Heesbeen, D; Heinsius, F H; Henoch, M; Hertenberger, R; Hesselink, W H A; Hoffmann-Rothe, P; Hofman, G J; Holler, Y; Holto, R J; Hommez, B; Iarygin, G; Iodice, M; Izotov, A A; Jackson, H E; Jgoun, A; Jung, P; Kaiser, R; Kanesakaac, J; Kinney, E R; Kiselev, A; Kitching, P; Kobayashi, H; Koch, N; Königsmann, K C; Kolster, H; Korotkov, V A; Kotik, E; Kozlov, V; Krivokhizhin, V G; Kyle, G S; Lagamba, L; Laziev, A; Lenisa, P; Lindemann, T; Lorenzon, W; Makins, N C R; Martin, J W; Marukyan, H O; Masoli, F; McAndrew, M; McIlhany, K; McKeown, R D; Menden, F; Metzu, A; Meyners, N; Miklukho, O; Miller, C A; Milner, R; Mitsyn, V; Muccifora, V; Mussa, R; Nagaitsev, A P; Nappi, E; Naryshkin, Yu; Nass, A; Negodaeva, K; Nowak, Wolf-Dieter; O'Neill, T G; Openshaw, R; Ouyang, J; Owen, B R; Pate, S F; Potashov, S Yu; Potterveld, D H; Rakness, G; Rappoport, V; Redwine, R P; Reggiani, D; Reolon, A R; Ristinen, R; Rith, K; Robinson, D; Ruh, M; Ryckbosch, D; Sakemi, Y; Savin, I A; Scarlett, C; Schäfer, A; Schill, C; Schmidt, F; Schnell, G; Schulerf, K P; Schwind, A; Seibert, J; Seitz, B; Shibata, T A; Shin, T; Shutov, V B; Simani, C; Simon, A; Sinram, K; Steffens, E; Steijger, J J M; Stewart, J; Stösslein, U; Suetsugu, K; Sutter, M F; Tallini, H A; Taroian, S P; Terkulov, A R; Tessarin, S; Thomas, E; Tipton, B; Tytgat, M; Urciuoli, G M; Van den Brand, J F J; van der Steenhoven, G; Van de Vyver, R; Van Hunen, J J; Vetterli, Martin C; Vikhrov, V V; Vincter, M G; Visser, J; Volk, E; Weiskopf, C; Wendland, J; Wilbert, J; Wiseq, T; Yen, S; Yoneyama, S; Zohrabyan, H G

    2000-01-01T23:59:59.000Z

    The dependence on Q^2 (the negative square of the 4-momentum of the exchanged virtual photon) of the generalised Gerasimov-Drell-Hearn integral for the proton has been measured in the range 1.2 GeV^2 3 GeV^2, while both contributions are important at low Q^2. The total integral shows no significant deviation from a 1/Q^2 behaviour in the measured Q^2 range, and thus no sign of large effects due to either nucleon-resonance excitations or non-leading twist.

  11. The proton and deuteron F_2 structure function at low Q^2

    E-Print Network [OSTI]

    Tvaskis, V; Asaturyan, R; Baker, O K; Blok, H P; Bosted, P; Boswell, M; Bruell, A; Christy, M E; Cochran, A; Ent, R; Filippone, B W; Gasparian, A; Keppel, C E; Kinney, E; Lapikás, L; Lorenzon, W; Mack, D J; Mammei, J; Martin, J W; Mkrtchyan, H; Niculescu, I; Piercey, R B; Potterveld, D H; Smith, G; Spurlock, K; van der Steenhoven, G; Stepanyan, S; Tadevosian, V; Wood, S A

    2010-01-01T23:59:59.000Z

    Measurements of the proton and deuteron $F_2$ structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range $0.06 < Q^2 < 2.8$ GeV$^2$, and Bjorken $x$ values from 0.009 to 0.45, thus extending the knowledge of $F_2$ to low values of $Q^2$ at low $x$. Next-to-next-to-leading order calculations using recent parton distribution functions start to deviate from the data for $Q^2<2$ GeV$^2$ at the low and high $x$-values. Down to the lowest value of $Q^2$, the structure function is in good agreement with a parameterization of $F_2$ based on data that have been taken at much higher values of $Q^2$ or much lower values of $x$, and which is constrained by data at the photon point. The ratio of the deuteron and proton structure functions at low $x$ remains well described by a logarithmic dependence on $Q^2$ at low $Q^2$.

  12. The proton and deuteron F_2 structure function at low Q^2

    E-Print Network [OSTI]

    V. Tvaskis; J. Arrington; R. Asaturyan; O. K. Baker; H. P. Blok; P. Bosted; M. Boswell; A. Bruell; M. E. Christy; A. Cochran; R. Ent; B. W. Filippone; A. Gasparian; C. E. Keppel; E. Kinney; L. Lapikás; W. Lorenzon; D. J. Mack; J. Mammei; J. W. Martin; H. Mkrtchyan; I. Niculescu; R. B. Piercey; D. H. Potterveld; G. Smith; K. Spurlock; G. van der Steenhoven; S. Stepanyan; V. Tadevosian; S. A. Wood

    2010-02-08T23:59:59.000Z

    Measurements of the proton and deuteron $F_2$ structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range $0.06 < Q^2 < 2.8$ GeV$^2$, and Bjorken $x$ values from 0.009 to 0.45, thus extending the knowledge of $F_2$ to low values of $Q^2$ at low $x$. Next-to-next-to-leading order calculations using recent parton distribution functions start to deviate from the data for $Q^2<2$ GeV$^2$ at the low and high $x$-values. Down to the lowest value of $Q^2$, the structure function is in good agreement with a parameterization of $F_2$ based on data that have been taken at much higher values of $Q^2$ or much lower values of $x$, and which is constrained by data at the photon point. The ratio of the deuteron and proton structure functions at low $x$ remains well described by a logarithmic dependence on $Q^2$ at low $Q^2$.

  13. $?^-$, $?^{*-}$, $?^{*-}}$ and $?^-}$ decuplet baryon electric charge form factor $F_1(q^2)$

    E-Print Network [OSTI]

    Milton Dean Slaughter

    2011-08-19T23:59:59.000Z

    The magnetic moment---a function of the electric charge form factor $F_{1}(q^{2})$ and the magnetic dipole form factor $F_{2}(q^{2})$ at zero four-momentum transfer $q^{2}$---of the ground-state $U$-spin =3/2 baryon decuplet $\\Delta^{-}$, $\\Xi^{*\\,-}$, $\\Sigma^{*\\,-}$ and $\\Omega^{-}$ and their ground-state spin 1/2 cousins $p$, $n$, $\\Lambda$, $\\Sigma^{+}$, $\\Sigma^{0}$, $\\Sigma^{-}$, $\\Xi^{+}$, and $\\Xi^{-}$ have been studied for many years with a modicum of success---only the magnetic moment of the $\\Omega^{-}$ has been accurately determined. In a recent study by us utilizing the infinite momentum frame, we calculated the magnetic moments of the \\emph{physical} decuplet $U$-Spin =3/2 quartet members in terms of that of the $\\Omega^{-}$ without ascribing any specific form to their quark structure or intra-quark interactions. That study determined $F_{2}(q^{2})$ and was conducted nonperturbatively where the decuplet baryon momenta were all collinear. In this follow-up research---again utilizing the infinite momentum frame but now allowing for non-collinear momenta---we are able to determine $F_{1}(q^{2})$ where $q^{2}\\leq 0$. We relate the electric charge form factor $F_{1}(q^{2})$ of the \\emph{physical} decuplet $S\

  14. Photon electroproduction from hydrogen at backward angles and momentum transfer squared of $Q^{2}=1.0Gev^{2}$

    E-Print Network [OSTI]

    Laveissière, G; Jaminion, S; Jutier, C; Todor, L; Di Salvo, R; Van Hoorebeke, L; Alexa, L C; Anderson, B D; Aniol, K A; Arundell, K; Audit, G; Auerbach, L; Baker, F T; Baylac, M; Berthot, J; Bertin, P Y; Bertozzi, W; Bimbot, L; Böglin, W; Brash, E J; Breton, V; Breuer, H; Burtin, E; Calarco, J R; Cardman, L S; Cavata, C; Chang, C C; Chen, J P; Chudakov, E; Cisbani, E; Dale, D S; De Jager, C W; De Leo, R; Deur, A; D'Hose, N; Dodge, G E; Domingo, John J; Elouadrhiri, L; Epstein, M B; Ewell, L A; Finn, J M; Fissum, K G; Fonvieille, H; Fournier, G; Frois, B; Frullani, S; Furget, C; Gao, H; Gao, J; Garibaldi, F; Gasparian, A; Gilad, S; Gilman, R; Glamazdin, A; Glashausser, C; Gómez, J; Gorbenko, V; Grenier, P; Guichon, P A M; Hansen, J O; Holmes, R; Holtrop, M; Howell, C; Huber, G M; Hyde-Wright, C E; Incerti, S; Iodice, M; Jardillier, J; Jones, M K; Kahl, W; Kamalov, S; Kato, S; Katramatou, A T; Kelly, J J; Kerhoas, S; Ketikyan, A; Khayat, M; Kino, K; Kox, S; Kramer, L H; Kumar, K S; Kumbartzki, G; Kuss, M; Leone, A; Le Rose, J J; Liang, M; Lindgren, R A; Liyanage, N K; Lolos, G J; Lourie, R W; Madey, R; Maeda, K; Malov, S; Manley, D M; Marchand, C; Marchand, D; Margaziotis, D J; Markowitz, P; Marroncle, J; Martino, J; McCormick, K; McIntyre, J; Mehrabyan, S S; Merchez, F; Meziani, Z E; Michaels, R; Miller, G W; Mougey, J Y; Nanda, S K; Neyret, D; Offermann, E; Papandreou, Z; Perdrisat, C F; Perrino, R; Petratos, G G; Platchkov, S; Pomatsalyuk, R I; Prout, D L; Punjabi, V A; Pussieux, T; Quéméner, G; Ransome, R D; Ravel, O; Real, J S; Renard, F; Roblin, Y; Rowntree, D; Rutledge, G; Rutt, P M; Saha, A; Saitô, T; Sarty, A J; Serdarevic, A; Smith, T; Smirnov, G; Soldi, K; Sorokin, P; Souder, P A; Suleiman, R; Templon, J A; Terasawa, T; Tiator, L; Tieulent, R; Tomasi-Gustafsson, E; Tsubota, H; Ueno, H; Ulmer, P E; Urciuoli, G M; Van De Vyver, R; Van, R L J; der Meer; Vernin, P; Vlahovic, B; Voskanyan, H; Voutier, E; Watson, J W; Weinstein, L B; Wijesooriya, K; Wilson, R; Wojtsekhowski, B B; Zainea, D G; Zhang, W M; Zhao, J; Zhou, Z L

    2004-01-01T23:59:59.000Z

    Photon electroproduction from hydrogen at backward angles and momentum transfer squared of $Q^{2}=1.0Gev^{2}$

  15. Quantum Field Theory on the Noncommutative Plane with $E_q(2)$ Symmetry

    E-Print Network [OSTI]

    M. Chaichian; A. Demichev; P. Presnajder

    1999-04-20T23:59:59.000Z

    We study properties of a scalar quantum field theory on the two-dimensional noncommutative plane with $E_q(2)$ quantum symmetry. We start from the consideration of a firstly quantized quantum particle on the noncommutative plane. Then we define quantum fields depending on noncommutative coordinates and construct a field theoretical action using the $E_q(2)$-invariant measure on the noncommutative plane. With the help of the partial wave decomposition we show that this quantum field theory can be considered as a second quantization of the particle theory on the noncommutative plane and that this field theory has (contrary to the common belief) even more severe ultraviolet divergences than its counterpart on the usual commutative plane. Finally, we introduce the symmetry transformations of physical states on noncommutative spaces and discuss them in detail for the case of the $E_q(2)$ quantum group.

  16. Partial degeneracy breaking of the hydrogen energy spectrum from su_q(2)

    E-Print Network [OSTI]

    P. G. Castro; R. Kullock

    2012-12-07T23:59:59.000Z

    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), and construct the discrete part of the energy spectrum. This will lead to a partial breaking of the degeneracy of the energy levels and to a reduction of the Hilbert space.

  17. Longitudinal-Transverse Separations of Structure Functions at Low $Q^{2}$ for Hydrogen and Deuterium

    E-Print Network [OSTI]

    V. Tvaskis

    2006-11-13T23:59:59.000Z

    We report on a study of the longitudinal to transverse cross section ratio, $R=\\sigma_L/\\sigma_T$, at low values of $x$ and $Q^{2}$, as determined from inclusive inelastic electron-hydrogen and electron-deuterium scattering data from Jefferson Lab Hall C spanning the four-momentum transfer range 0.06 $ hydrogen and deuterium.

  18. Structure Functions at Low Q 2 and A. Pellegrino (Argonne National Lab.)

    E-Print Network [OSTI]

    Structure Functions at Low Q 2 and Very Low x A. Pellegrino (Argonne National Lab.) on behalf; s ) 2 independent variables A. Pellegrino (Argonne National Lab.) , ICHEP2000, July 28 2000 2 #12; Cross. Pellegrino (Argonne National Lab.) , ICHEP2000, July 28 2000 3 #12; Experimental Range 10 ­1 1 10 10 2 10 3

  19. 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.,

    2015-07-01T23:59:59.000Z

    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

  20. 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

    2012-03-26T23:59:59.000Z

    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

  1. 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; Biselli, A S; Bookwalter, C; Boiarinov, S; Branford, D; Briscoe, W J; Brooks, W K; Burkert, V D; Carman, D S; Celentano, A; Chandavar, S; Charles, G; Cole, P L; Contalbrigo, M; Crede, V; D'Angelo, A; Daniel, A; Dashyan, N; De Vita, R; De Sanctis, E; Deur, A; Djalali, C; Doughty, D; Dupre, R; El Alaoui, A; El Fassi, L; Euginio, P; Fedotov, G; Fradi, A; Gabrielyan, M Y; Gevorgyan, N; Gilfoyle, G P; Giovanetti, K L; Girod, F X; Goetz, J T; Gohn, W; Golovatch, E; Graham, L; Griffioen, K A; Guidal, M; Guo, L; Hafidi, K; Hakobyan, H; Hanretty, C; Heddle, D; Hicks, K; Holtrop, M; Ilieva, Y; Ireland, D G; Ishkhanov, B S; Isupov, E L; Jenkins, D; Jo, H S; Joo, K; Khandaker, M; Khertarpal, P; Kim, A; Kim, W; Klein, F J; Kubarovsky, A; Kubarovsky, V; Kuhn, S E; Kuleshov, S V; Kvaltine, N D; Livingston, K; Lu, H Y; MacGregor, J D; Markov, N; Mayer, M; McKinnon, B; Mestayer, M D; Meyer, C A; Mineeva, T; Mirazita, M; Mokeev, V; Moutarde, H; Munevar, E; Nadel-Turonski, P; Nasseripour, R; Niccolai, S; Niculescu, G; Niculescu, I; Osipenko, M; Ostrovidov, A I; Paolone, M; Pappalardo, L; Paremuzyan, R; Park, S; Anefalos Pereira, S; Phelps, E; Pisano, S; Pogorelko, O; Pozdniakov, S; Price, J W; Procureur, S; Prok, Y; Ricco, G; Rimal, D; Ripani, M; Ritchie, B G; Rosner, G; Rossi, P; Sabati ee, F; Saini, M S; Salgado, C; Schott, D; Schumacher, R A; Seraydaryan, H; Sharabian, Y G; Smith, E S; Smith, G D; Sober, D I; Sokhan, D; Stepanyan, S S; Stepanyan, S; Stoler, P; Strakovsky, I I; Strauch, S; Taiuti, M; Tang, W; Taylor, C E; Tian, Y; Tkachenko, S; Trivedi, A; Ungaro, M; Vernarsky, B; Vlassov, A V; Voutier, E; Watts, D P; Weygand, D P; Wood, M H; Zachariou, N; Zhao, B; Zhao, Z W

    2012-03-26T23:59:59.000Z

    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 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 Q2 independent.

  2. 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

    2012-02-21T23:59:59.000Z

    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.

  3. 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

    2015-06-29T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Thomas A. Trainor

    2005-10-11T23:59:59.000Z

    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.

  5. 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

    2009-04-29T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Xiaohui Zhan

    2010-01-31T23:59:59.000Z

    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.

  7. 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

    2006-05-10T23:59:59.000Z

    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.

  8. STABILITY OF DOW CORNING Q2-3183A ANTIFOAM IN IRRADIATED HYDROXIDE SOLUTION

    SciTech Connect (OSTI)

    White, T; Crawford, C; Burket, P; Calloway, B

    2009-10-19T23:59:59.000Z

    Researchers at the Savannah River National Laboratory (SRNL) examined the stability of Dow Corning Q2-3183A antifoam to radiation and aqueous hydroxide solutions. Initial foam control studies with Hanford tank waste showed the antifoam reduced foaming. The antifoam was further tested using simulated Hanford tank waste spiked with antifoam that was heated and irradiated (2.1 x 10{sup 4} rad/h) at conditions (90 C, 3 M NaOH, 8 h) expected in the processing of radioactive waste through the Waste Treatment and Immobilization Plant (WTP) at Hanford. After irradiation, the concentration of the major polymer components polydimethylsiloxane (PDMS) and polypropylene glycol (PPG) in the antifoam was determined by gel permeation chromatography (GPC). No loss of the major polymer components was observed after 24 h and only 15 wt% loss of PDMS was reported after 48 h. The presence of degradation products were not observed by gas chromatography (GC), gas chromatography mass spectrometry (GCMS) or high performance liquid chromatography mass spectrometry (HPLC-MS). G values were calculated from the GPC analysis and tabulated. The findings indicate the antifoam is stable for 24 h after exposure to gamma radiation, heat, and alkaline simulated waste.

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

    SciTech Connect (OSTI)

    Vincent Sulkosky

    2007-08-01T23:59:59.000Z

    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.

  10. Constraints on the Nucleon Strange Form Factors at Q^2 ~ 0.1 GeV^2

    E-Print Network [OSTI]

    Airapetian, A; Akopov, Z; Amarian, M; Ammosov, V V; Andrus, A; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetisian, A; Avetissian, E; Bailey, P; Balin, D; Baturin, V; Beckmann, M; Belostotskii, S; Bernreuther, S; Bianchi, N; Blok, H P; Böttcher, Helmut B; Borisov, A; Borysenko, A; Bouwhuis, M; Brack, J; Brüll, A; Bryzgalov, V; Capitani, G P; Chen, T; Chiang, H C; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Devitsin, E G; Di Nezza, P; Dreschler, J; Düren, M; Ehrenfried, M; Elalaoui-Moulay, A; Elbakian, G; Ellinghaus, F; Elschenbroich, U; Fabbri, R; Fantoni, A; Feshchenko, A; Felawka, L; Fox, B; Frullani, S; Gapienko, G; Gapienko, V; Garibaldi, F; Garrow, K; Garutti, E; Gaskell, D; Gavrilov, G; Karibian, V; Graw, G; Grebenyuk, O; Greeniaus, L G; Gregor, I M; Hafidi, K; Hartig, M; Hasch, D; Heesbeen, D; Henoch, M; Hertenberger, R; Hesselink, W H A; Hillenbrand, A; Hoek, M; Holler, Y; Hommez, B; Iarygin, G; Ivanilov, A; Izotov, A; Jackson, H E; Jgoun, A; Kaiser, R; Kinney, E; Kiselev, A; Kopytin, M; Korotkov, V; Kozlov, V; Krauss, B; Krivokhizhin, V G; Lagamba, L; Lapikas, L; Laziev, A; Lenisa, P; Liebing, P; Linden-Levy, L A; Lipka, K; Lorenzon, W; Lü, H; Lü, J; Lu, S; Ma, B Q; Maiheu, B; Makins, N C R; Mao, Y; Marianski, B; Marukyan, H; Masoli, F; Mexner, V; Meyners, N; Miklukho, O; Miller, C A; Miyachi, Y; Muccifora, V; Nagaitsev, A; Nappi, E; Naryshkin, Yu; Nass, A; Negodaev, M; Nowak, Wolf-Dieter; Oganessyan, K; Ohsuga, H; Pickert, N; Potashov, S Yu; Potterveld, D H; Raithel, M; Reggiani, D; Reimer, P E; Reischl, A; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanjiev, I; Savin, I; Schäfer, A; Schill, C; Schnell, G; Schüler, K P; Seele, J; Seidl, R; Seitz, B; Shanidze, R; Shearer, C; Shibata, T A; Shutov, V; Simani, M C; Sinram, K; Stancari, M; Statera, M; Steffens, E; Steijger, J J M; Stenzel, H; Stewart, J; Stinzing, F; Stösslein, U; Tait, P; Tanaka, H; Taroian, S P; Tchuiko, B; Terkulov, A R; Tkabladze, A; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van der Nat, P B; van der Steenhoven, G; Vetterli, M C; Vikhrov, V; Vincter, M G; Vogel, C; Vogt, M; Volmer, J; Weiskopf, C; Wendland, J; Wilbert, J; Ye, Y; Ye, Z; Yen, S; Zihlmann, B; Zupranski, P; Aniol, K A; Armstrong, D S; Averett, T; Benaoum, H; Bertin, P Y; Burtin, E; Cahoon, J; Cates, G D; Chang, C C; Chao Yu Chiu; Chen, J P; Seonho Choi; Chudakov, E; Craver, B; Cusanno, F; Decowski, P; Deepa, D; Ferdi, C; Feuerbach, R J; Finn, J M; Fuoti, K; Gilman, R; Glamazdin, A; Gorbenko, V; Grames, J M; Hansknecht, J; Higinbotham, D W; Holmes, R; Holmstrom, T; Humensky, T B; Ibrahim, H; De Jager, C W; Jiang, X; Kaufman, L J; Kelleher, A; Kolarkar, A; Kowalski, S; Kumar, K S; Lambert, D; La Violette, P; Le Rose, J; Lhuillier, D; Liyanage, N; Margaziotis, D J; Mazouz, M; McCormick, K; Meekins, D G; Meziani, Z E; Michaels, R; Moffit, B; Monaghan, P; Munoz-Camacho, C; Nanda, S; Nelyubin, V V; Neyret, D; Paschke, K D; Poelker, M; Pomatsalyuk, R I; Qiang, Y; Reitz, B; Roche, J; Saha, A; Singh, J; Snyder, R; Souder, P A; Subedi, R; Suleiman, R; Sulkosky, V; Tobias, W A; Urciuoli, G M; Vacheret, A; Voutier, E; Wang, K; Wilson, R; Wojtsekhowski, B; Zheng, X

    2006-01-01T23:59:59.000Z

    We report the most precise measurement to date of a parity-violating asymmetry in elastic electron-proton scattering. The measurement was carried out with a beam energy of 3.03 GeV and a scattering angle = 6.0 degrees, with the result A_PV = -1.14 +/- 0.24 (stat) +/- 0.06 (syst) parts per million. From this we extract, at Q^2 = 0.099 GeV^2, the strange form factor combination G_E^s + 0.080 G_M^s = 0.030 +/- 0.025 (stat) +/- 0.006 (syst) +/- 0.012 (FF) where the first two errors are experimental and the last error is due to the uncertainty in the neutron electromagnetic form factor. The measurement significantly improves existing constraints on G_E^s and G_M^s at Q^2 ~0.1 GeV^2. A consistent picture emerges from all measurements at this Q^2. A combined fit shows that G_E^s is consistent with zero while G_M^s prefers positive values though G_E^s=G_M^s=0 is compatible with the data at 95% C.L.

  11. Fractal Inspired Models of Quark and Gluon Distributions and Longitudinal Structure Function FL(x, Q2) at small x

    E-Print Network [OSTI]

    Akbari Jahan; D. K. Choudhury

    2010-12-30T23:59:59.000Z

    In recent years, Fractal Inspired Models of quark and gluon densities at small x have been proposed. In this paper, we investigate longitudinal structure function F-L (x, Q2) within this approach. We make predictions using the QCD based approximate relation between the longitudinal structure function and the gluon density. As the Altarelli-Martinelli equation for the longitudinal structure function cannot be applied to Model I due to the presence of a singularity in the Bjorken x-space we consider Model II only. The qualitative feature of the prediction of Model II is found to be compatible with the QCD expectation.

  12. Near threshold electroproduction of the omega meson at Q2 ~ 0.5 GeV2

    E-Print Network [OSTI]

    P. Ambrozewicz; J. Mitchell; J. Dunne; P. Markowitz; C. J. Martoff; J. Reinhold; B. Zeidman

    2004-06-15T23:59:59.000Z

    Electroproduction of the omega meson was investigated in the p(e,e'p)omega reaction. The measurement was performed at a 4-momentum transfer Q2 ~ 0.5 GeV2. Angular distributions of the virtual photon-proton center-of-momentum cross sections have been extracted over the full angular range. These distributions exhibit a strong enhancement over t-channel parity exchange processes in the backward direction. According to a newly developed electroproduction model, this enhancement provides significant evidence of resonance formation in the gamma* p -> omega p reaction channel.

  13. Virtual Compton Scattering and the Generalized Polarizabilities of the Proton at Q^2=0.92 and 1.76 GeV^2

    E-Print Network [OSTI]

    Fonvieille, H; Degrande, N; Jaminion, S; Jutier, C; Di Salvo, L TodorR; Van Hoorebeke, L; Alexa, L C; Anderson, B D; Aniol, K A; Arundell, K; Audit, G; Auerbach, L; Baker, F T; Baylac, M; Berthot, J; Bertin, P Y; Bertozzi, W; Bimbot, L; Boeglin, W U; Brash, E J; Breton, V; Breuer, H; Burtin, E; Calarco, J R; Cardman, L S; Cavata, C; Chang, C -C; Chen, J -P; Chudakov, E; Cisbani, E; Dale, D S; deJager, C W; De Leo, R; Deur, A; d'Hose, N; Dodge, G E; Domingo, J J; Elouadrhiri, L; Epstein, M B; Ewell, L A; Finn, J M; Fissum, K G; Fournier, G; Frois, B; Frullani, S; Furget, C; Gao, H; Gao, J; Garibaldi, F; Gasparian, A; Gilad, S; Gilman, R; Glamazdin, A; Glashausser, C; Gomez, J; Gorbenko, V; Grenier, P; Guichon, P A M; Hansen, J O; Holmes, R; Holtrop, M; Howell, C; Huber, G M; Hyde, C E; Incerti, S; Iodice, M; Jardillier, J; Jones, M K; Kahl, W; Kato, S; Katramatou, A T; Kelly, J J; Kerhoas, S; Ketikyan, A; Khayat, M; Kino, K; Kox, S; Kramer, L H; Kumar, K S; Kumbartzki, G; Kuss, M; Leone, A; LeRose, J J; Liang, M; Lindgren, R A; Liyanage, N; Lolos, G J; Lourie, R W; Madey, R; Maeda, K; Malov, S; Manley, D M; Marchand, C; Marchand, D; Margaziotis, D J; Markowitz, P; Marroncle, J; Martino, J; McCormick, K; McIntyre, J; Mehrabyan, S; Merchez, F; Meziani, Z E; Michaels, R; Miller, G W; Mougey, J Y; Nanda, S K; Neyret, D; Offermann, E A J M; Papandreou, Z; Pasquini, B; Perdrisat, C F; Perrino, R; Petratos, G G; Platchkov, S; Pomatsalyuk, R; Prout, D L; Punjabi, V A; Pussieux, T; Quemener, G; Ransome, R D; Ravel, O; Real, J S; Renard, F; Roblin, Y; Rowntree, D; Rutledge, G; Rutt, P M; Saha, A; Saito, T; Sarty, A J; Serdarevic, A; Smith, T; Smirnov, G; Soldi, K; Sorokin, P; Souder, P A; Suleiman, R; Templon, J A; Terasawa, T; Tieulent, R; Tomasi-Gustaffson, E; Tsubota, H; Ueno, H; Ulmer, P E; Urciuoli, G M; Vanderhaeghen, M; Van der Meer, R L J; Van De Vyver, R; Vernin, P; Vlahovic, B; Voskanyan, H; Voutier, E; Watson, J W; Weinstein, L B; Wijesooriya, K; Wilson, R; Wojtsekhowski, B B; Zainea, D G; Zhang, W-M; Zhao, J; Zhou, Z -L

    2012-01-01T23:59:59.000Z

    Virtual Compton Scattering (VCS) on the proton has been studied at Jefferson Lab using the exclusive photon electroproduction reaction (e p --> e p gamma). This paper gives a detailed account of the analysis which has led to the determination of the structure functions P_LL-P_TT/epsilon and P_LT, and the electric and magnetic generalized polarizabilities (GPs) alpha_E(Q^2) and beta_M(Q^2) at values of the four-momentum transfer squared Q^2= 0.92 and 1.76 GeV^2. These data, together with the results of VCS experiments at lower momenta, help building a coherent picture of the electric and magnetic GPs of the proton over the full measured Q^2-range, and point to their non-trivial behavior.

  14. Virtual Compton Scattering and the Generalized Polarizabilities of the Proton at Q^2=0.92 and 1.76 GeV^2

    E-Print Network [OSTI]

    H. Fonvieille; G. Laveissiere; N. Degrande; S. Jaminion; C. Jutier; L. Todor; R. Di Salvo; L. Van Hoorebeke; L. C. Alexa; B. D. Anderson; K. A. Aniol; K. Arundell; G. Audit; L. Auerbach; F. T. Baker; M. Baylac; J. Berthot; P. Y. Bertin; W. Bertozzi; L. Bimbot; W. U. Boeglin; E. J. Brash; V. Breton; H. Breuer; E. Burtin; J. R. Calarco; L. S. Cardman; C. Cavata; C. -C. Chang; J. -P. Chen; E. Chudakov; E. Cisbani; D. S. Dale; C. W. deJager; R. De Leo; A. Deur; N. d'Hose; G. E. Dodge; J. J. Domingo; L. Elouadrhiri; M. B. Epstein; L. A. Ewell; J. M. Finn; K. G. Fissum; G. Fournier; B. Frois; S. Frullani; C. Furget; H. Gao; J. Gao; F. Garibaldi; A. Gasparian; S. Gilad; R. Gilman; A. Glamazdin; C. Glashausser; J. Gomez; V. Gorbenko; P. Grenier; P. A. M. Guichon; J. O. Hansen; R. Holmes; M. Holtrop; C. Howell; G. M. Huber; C. E. Hyde; S. Incerti; M. Iodice; J. Jardillier; M. K. Jones; W. Kahl; S. Kato; A. T. Katramatou; J. J. Kelly; S. Kerhoas; A. Ketikyan; M. Khayat; K. Kino; S. Kox; L. H. Kramer; K. S. Kumar; G. Kumbartzki; M. Kuss; A. Leone; J. J. LeRose; M. Liang; R. A. Lindgren; N. Liyanage; G. J. Lolos; R. W. Lourie; R. Madey; K. Maeda; S. Malov; D. M. Manley; C. Marchand; D. Marchand; D. J. Margaziotis; P. Markowitz; J. Marroncle; J. Martino; K. McCormick; J. McIntyre; S. Mehrabyan; F. Merchez; Z. E. Meziani; R. Michaels; G. W. Miller; J. Y. Mougey; S. K. Nanda; D. Neyret; E. A. J. M. Offermann; Z. Papandreou; B. Pasquini; C. F. Perdrisat; R. Perrino; G. G. Petratos; S. Platchkov; R. Pomatsalyuk; D. L. Prout; V. A. Punjabi; T. Pussieux; G. Quemener; R. D. Ransome; O. Ravel; J. S. Real; F. Renard; Y. Roblin; D. Rowntree; G. Rutledge; P. M. Rutt; A. Saha; T. Saito; A. J. Sarty; A. Serdarevic; T. Smith; G. Smirnov; K. Soldi; P. Sorokin; P. A. Souder; R. Suleiman; J. A. Templon; T. Terasawa; R. Tieulent; E. Tomasi-Gustaffson; H. Tsubota; H. Ueno; P. E. Ulmer; G. M. Urciuoli; M. Vanderhaeghen; R. L. J. Van der Meer; R. Van De Vyver; P. Vernin; B. Vlahovic; H. Voskanyan; E. Voutier; J. W. Watson; L. B. Weinstein; K. Wijesooriya; R. Wilson; B. B. Wojtsekhowski; D. G. Zainea; W. -M. Zhang; J. Zhao; Z. -L. Zhou

    2012-06-28T23:59:59.000Z

    Virtual Compton Scattering (VCS) on the proton has been studied at Jefferson Lab using the exclusive photon electroproduction reaction (e p --> e p gamma). This paper gives a detailed account of the analysis which has led to the determination of the structure functions P_LL-P_TT/epsilon and P_LT, and the electric and magnetic generalized polarizabilities (GPs) alpha_E(Q^2) and beta_M(Q^2) at values of the four-momentum transfer squared Q^2= 0.92 and 1.76 GeV^2. These data, together with the results of VCS experiments at lower momenta, help building a coherent picture of the electric and magnetic GPs of the proton over the full measured Q^2-range, and point to their non-trivial behavior.

  15. Measurement of the Inclusive ep Deep Inelastic Scattering Cross Section at Low Q2 with the H1 Detector at HERA

    SciTech Connect (OSTI)

    Raicevic, N. [Faculty of Science, University of Montenegro, Cetinjski put BB, 81000 Podgorica (Montenegro)

    2007-04-23T23:59:59.000Z

    The focus of this report are the recent measurements of the cross section and proton structure function F2 in ep deep inelastic scattering (DIS) at low virtuality of the exchanged boson, Q2, with the H1 detector at the HERA accelerator in Hamburg. The region of low Q2 and low Bjorken x allows precision tests of perturbative QCD at high gluon densities to be performed and also the transition from the perturbative to non-perturbative QCD domains to be explored. The recent H1 measurements of charm and beauty cross sections and structure functions, F{sub 2}{sup cc-bar} ans F{sub 2}{sup bb-bar}, for photon virtuality 12 < Q2 < 60 GeV2 will also be discussed.

  16. 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

    2007-07-01T23:59:59.000Z

    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.

  17. 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, Andrew J.

    2012-04-01T23:59:59.000Z

    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

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

    SciTech Connect (OSTI)

    Park, Kijun [ODU, JLAB

    2014-09-01T23:59:59.000Z

    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.

  19. 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, Andrew J. [JLAB

    2012-04-01T23:59:59.000Z

    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 elastic 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.

  20. Photon Electroproduction from Hydrogen at Backward Angles and Momentum Transfer Squared of Q**2=1.0 GeV**2

    E-Print Network [OSTI]

    Laveissière, G; Degrande, N; Jaminion, S; Jutier, C; Todor, L; Di Salvo, R; Van Hoorebeke, L; Alexa, L C; Anderson, B D; Aniol, K A; Arundell, K; Audit, G; Auerbach, L; Baker, F T; Baylac, M; Berthot, J; Bertin, P Y; Bertozzi, W; Bimbot, L; Böglin, W; Brash, E J; Breton, V; Breuer, H; Burtin, E; Calarco, J R; Cardman, L S; Cavata, C; Chang, C C; Chen, J P; Chudakov, E; Cisbani, E; Dale, D S; De Jager, C W; De Leo, R; Deur, A; D'Hose, N; Dodge, G E; Domingo, John J; Elouadrhiri, L; Epstein, M B; Ewell, L A; Finn, J M; Fissum, K G; Fonvieille, H; Fournier, G; Frois, B; Frullani, S; Furget, C; Gao, H; Gao, J; Garibaldi, F; Gasparian, A; Gilad, S; Gilman, R; Glamazdin, A; Glashausser, C; Gómez, J; Gorbenko, V; Grenier, P; Guichon, P A M; Hansen, J O; Holmes, R; Holtrop, M; Howell, C; Huber, G M; Hyde-Wright, C E; Incerti, S; Iodice, M; Jardillier, J; Jones, M K; Kahl, W; Kamalov, S; Kato, S; Katramatou, A T; Kelly, J J; Kerhoas, S; Ketikyan, A; Khayat, M; Kino, K; Kox, S; Kramer, L H; Kumar, K S; Kumbartzki, G; Kuss, M; Leone, A; Le Rose, J J; Liang, M; Lindgren, R A; Liyanage, N K; Lolos, G J; Lourie, R W; Madey, R; Maeda, K; Malov, S; Manley, D M; Marchand, C; Marchand, D; Margaziotis, D J; Markowitz, P; Marroncle, J; Martino, J; McCormick, K; McIntyre, J; Mehrabyan, S S; Merchez, F; Meziani, Z E; Michaels, R; Miller, G W; Mougey, J Y; Nanda, S K; Neyret, D; Offermann, E; Papandreou, Z; Perdrisat, C F; Perrino, R; Petratos, G G; Platchkov, S; Pomatsalyuk, R I; Prout, D L; Punjabi, V A; Pussieux, T; Quéméner, G; Ransome, R D; Ravel, O; Real, J S; Renard, F; Roblin, Y; Rowntree, D; Rutledge, G; Rutt, P M; Saha, A; Saitô, T; Sarty, A J; Serdarevic, A; Smith, T; Smirnov, G; Soldi, K; Sorokin, P; Souder, P A; Suleiman, R; Templon, J A; Terasawa, T; Tiator, L; Tieulent, R; Tomasi-Gustafsson, E; Tsubota, H; Ueno, H; Ulmer, P E; Urciuoli, G M; Van De Vyver, R; Van, R L J; der Meer; Vernin, P; Vlahovic, B; Voskanyan, H; Voutier, E; Watson, J W; Weinstein, L B; Wijesooriya, K; Wilson, R; Wojtsekhowski, B B; Zainea, D G; Zhang, W M; Zhao, J; Zhou, Z L

    2004-01-01T23:59:59.000Z

    We have made the first measurements of the e p -> e p gamma exclusive reaction at Q**2 = 1 GeV**2 in the nucleon resonance region by detecting scattered protons and electrons in coincidence in the two spectrometers of Jefferson Lab Hall A. Evaluated cross sections correspond to the backward electroproduction of real photons in the range of total (gamma* p) center-of-mass energy W from the proton mass up to W = 1.95 GeV.

  1. Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA

    E-Print Network [OSTI]

    ZEUS Collaboration; H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R. Aggarwal; S. Antonelli; P. Antonioli; A. Antonov; M. Arneodo; O. Arslan; V. Aushev; Y. Aushev; O. Bachynska; A. Bamberger; A. N. Barakbaev; G. Barbagli; G. Bari; F. Barreiro; N. Bartosik; D. Bartsch; M. Basile; O. Behnke; J. Behr; U. Behrens; L. Bellagamba; A. Bertolin; S. Bhadra; M. Bindi; C. Blohm; V. Bokhonov; T. Bold; K. Bondarenko; E. G. Boos; K. Borras; D. Boscherini; D. Bot; I. Brock; E. Brownson; R. Brugnera; N. Brummer; A. Bruni; G. Bruni; B. Brzozowska; P. J. Bussey; B. Bylsma; A. Caldwell; M. Capua; R. Carlin; C. D. Catterall; S. Chekanov; J. Chwastowski; J. Ciborowski; R. Ciesielski; L. Cifarelli; F. Cindolo; A. Contin; A. M. Cooper-Sarkar; N. Coppola; M. Corradi; F. Corriveau; M. Costa; G. D'Agostini; F. Dal Corso; J. del Peso; R. K. Dementiev; S. De Pasquale; M. Derrick; R. C. E. Devenish; D. Dobur; B. A. Dolgoshein; G. Dolinska; A. T. Doyle; V. Drugakov; L. S. Durkin; S. Dusini; Y. Eisenberg; P. F. Ermolov; A. Eskreys; S. Fang; S. Fazio; J. Ferrando; M. I. Ferrero; J. Figiel; B. Foster; G. Gach; A. Galas; E. Gallo; A. Garfagnini; A. Geiser; I. Gialas; A. Gizhko; L. K. Gladilin; D. Gladkov; C. Glasman; O. Gogota; Yu. A. Golubkov; P. Gottlicher; I. Grabowska-Bold; J. Grebenyuk; I. Gregor; G. Grigorescu; G. Grzelak; O. Gueta; M. Guzik; C. Gwenlan; T. Haas; W. Hain; R. Hamatsu; J. C. Hart; H. Hartmann; G. Hartner; E. Hilger; D. Hochman; R. Hori; A. Huttmann; Z. A. Ibrahim; Y. Iga; R. Ingbir; M. Ishitsuka; H. -P. Jakob; F. Januschek; T. W. Jones; M. Jungst; I. Kadenko; B. Kahle; S. Kananov; T. Kanno; U. Karshon; F. Karstens; I. I. Katkov; M. Kaur; P. Kaur; A. Keramidas; L. A. Khein; J. Y. Kim; D. Kisielewska; S. Kitamura; R. Klanner; U. Klein; E. Koffeman; N. Kondrashova; O. Kononenko; P. Kooijman; Ie. Korol; I. A. Korzhavina; A. Kotanski; U. Kotz; H. Kowalski; O. Kuprash; M. Kuze; A. Lee; B. B. Levchenko; A. Levy; V. Libov; S. Limentani; T. Y. Ling; M. Lisovyi; E. Lobodzinska; W. Lohmann; B. Lohr; E. Lohrmann; K. R. Long; A. Longhin; D. Lontkovskyi; O. Yu. Lukina; J. Maeda; S. Magill; I. Makarenko; J. Malka; R. Mankel; A. Margotti; G. Marini; J. F. Martin; A. Mastroberardino; M. C. K. Mattingly; I. -A. Melzer-Pellmann; S. Mergelmeyer; S. Miglioranzi; F. Mohamad Idris; V. Monaco; A. Montanari; J. D. Morris; K. Mujkic; B. Musgrave; K. Nagano; T. Namsoo; R. Nania; A. Nigro; Y. Ning; T. Nobe; D. Notz; R. J. Nowak; A. E. Nuncio-Quiroz; B. Y. Oh; N. Okazaki; K. Olkiewicz; Yu. Onishchuk; K. Papageorgiu; A. Parenti; E. Paul; J. M. Pawlak; B. Pawlik; P. G. Pelfer; A. Pellegrino; W. Perlanski; H. Perrey; K. Piotrzkowski; P. Plucinski; N. S. Pokrovskiy; A. Polini; A. S. Proskuryakov; M. Przybycien; A. Raval; D. D. Reeder; B. Reisert; Z. Ren; J. Repond; Y. D. Ri; A. Robertson; P. Roloff; I. Rubinsky; M. Ruspa; R. Sacchi; U. Samson; G. Sartorelli; A. A. Savin; D. H. Saxon; M. Schioppa; S. Schlenstedt; P. Schleper; W. B. Schmidke; U. Schneekloth; V. Schonberg; T. Schorner-Sadenius; J. Schwartz; F. Sciulli; L. M. Shcheglova; R. Shehzadi; S. Shimizu; I. Singh; I. O. Skillicorn; W. Slominski; W. H. Smith; V. Sola; A. Solano; D. Son; V. Sosnovtsev; A. Spiridonov; H. Stadie; L. Stanco; N. Stefaniuk; A. Stern; T. P. Stewart; A. Stifutkin; P. Stopa; S. Suchkov; G. Susinno; L. Suszycki; J. Sztuk-Dambietz; D. Szuba; J. Szuba; A. D. Tapper; E. Tassi; J. Terron; T. Theedt; H. Tiecke; K. Tokushuku; J. Tomaszewska; V. Trusov; T. Tsurugai; M. Turcato; O. Turkot; T. Tymieniecka; M. Vazquez; A. Verbytskyi; O. Viazlo; N. N. Vlasov; R. Walczak; W. A. T. Wan Abdullah; J. J. Whitmore; K. Wichmann; L. Wiggers; M. Wing; M. Wlasenko; G. Wolf; H. Wolfe; K. Wrona; A. G. Yagues-Molina; S. Yamada; Y. Yamazaki; R. Yoshida; C. Youngman; O. Zabiegalov; A. F. . Zarnecki; L. Zawiejski; O. Zenaiev; W. Zeuner; B. O. Zhautykov; N. Zhmak; A. Zichichi; Z. Zolkapli; D. S. Zotkin

    2014-05-12T23:59:59.000Z

    Measurements of neutral current cross sections for deep inelastic scattering in e+p collisions at HERA with a longitudinally polarised positron beam are presented. The single-differential cross-sections d(sigma)/dQ2, d(sigma)/dx and d(sigma)/dy and the reduced cross-section were measured in the kinematic region Q2 > 185 GeV2 and y < 0.9, where Q2 is the four-momentum transfer squared, x the Bjorken scaling variable, and y the inelasticity of the interaction. The measurements were performed separately for positively and negatively polarised positron beams. The measurements are based on an integrated luminosity of 135.5 pb-1 collected with the ZEUS detector in 2006 and 2007 at a centre-of-mass energy of 318 GeV. The structure functions F3 and F3(gamma)Z were determined by combining the e+p results presented in this paper with previously published e-p neutral current results. The asymmetry parameter A+ is used to demonstrate the parity violation predicted in electroweak interactions. The measurements are well described by the predictions of the Standard Model.

  2. Backward electroproduction of pi0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q**2 = 1.0 GeV**2

    E-Print Network [OSTI]

    Laveissière, G; Jaminion, S; Jutier, C; Todor, L; Di Salvo, R; Van Hoorebeke, L; Alexa, L C; Anderson, B D; Aniol, K A; Arundell, K; Audit, G; Auerbach, L; Baker, F T; Baylac, M; Berthot, J; Bertin, P Y; Bertozzi, W; Bimbot, L; Böglin, W; Brash, E J; Breton, V; Breuer, H; Burtin, E; Calarco, J R; Cardman, L S; Cavata, C; Chang, C C; Chen, J P; Chudakov, E; Cisbani, E; Dale, D S; De Jager, C W; De Leo, R; Deur, A; D'Hose, N; Dodge, G E; Domingo, John J; Elouadrhiri, L; Epstein, M B; Ewell, L A; Finn, J M; Fissum, K G; Fonvieille, H; Fournier, G; Frois, B; Frullani, S; Furget, C; Gao, H; Gao, J; Garibaldi, F; Gasparian, A; Gilad, S; Gilman, R; Glamazdin, A; Glashausser, C; Gómez, J; Gorbenko, V; Grenier, P; Guichon, P A M; Hansen, J O; Holmes, R; Holtrop, M; Howell, C; Huber, G M; Hyde-Wright, C E; Incerti, S; Iodice, M; Jardillier, J; Jones, M K; Kahl, W; Kamalov, S; Kato, S; Katramatou, A T; Kelly, J J; Kerhoas, S; Ketikyan, A; Khayat, M; Kino, K; Kox, S; Kramer, L H; Kumar, K S; Kumbartzki, G; Kuss, M; Leone, A; Le Rose, J J; Liang, M; Lindgren, R A; Liyanage, N K; Lolos, G J; Lourie, R W; Madey, R; Maeda, K; Malov, S; Manley, D M; Marchand, C; Marchand, D; Margaziotis, D J; Markowitz, P; Marroncle, J; Martino, J; McCormick, K; McIntyre, J; Mehrabyan, S S; Merchez, F; Meziani, Z E; Michaels, R; Miller, G W; Mougey, J Y; Nanda, S K; Neyret, D; Offermann, E; Papandreou, Z; Perdrisat, C F; Perrino, R; Petratos, G G; Platchkov, S; Pomatsalyuk, R I; Prout, D L; Punjabi, V A; Pussieux, T; Quéméner, G; Ransome, R D; Ravel, O; Real, J S; Renard, F; Roblin, Y; Rowntree, D; Rutledge, G; Rutt, P M; Saha, A; Saitô, T; Sarty, A J; Serdarevic, A; Smith, T; Smirnov, G; Soldi, K; Sorokin, P; Souder, P A; Suleiman, R; Templon, J A; Terasawa, T; Tiator, L; Tieulent, R; Tomasi-Gustafsson, E; Tsubota, H; Ueno, H; Ulmer, P E; Urciuoli, G M; Van De Vyver, R; Van, R L J; der Meer; Vernin, P; Vlahovic, B; Voskanyan, H; Voutier, E; Watson, J W; Weinstein, L B; Wijesooriya, K; Wilson, R; Wojtsekhowski, B B; Zainea, D G; Zhang, W M; Zhao, J; Zhou, Z L

    2004-01-01T23:59:59.000Z

    Backward exclusive electroproduction of pi0 mesons on protons has been measured at Q**2 = 1.0 GeV**2 by detecting protons in the forward direction in coincidence with scattered electrons from the 4 GeV electron beam in Jefferson Lab's Hall A. The data span the range of the total (gamma* p) center-of-mass energy W from the pion production threshold to W = 2.0 GeV. The azimuthally separated differential cross sections sigma_T + epsilon * sigma_L, sigma_TL, and sigma_TT from this experiment are presented together with the MAID2000 and SAID parametrizations.

  3. The dynamics of the quasielastic 16O(e,e'p) reaction at Q^2 = 0.8 (GeV/c)^2

    E-Print Network [OSTI]

    Fissum, K G; Anderson, B D; Aniol, K A; Auerbach, L; Baker, F T; Berthot, J; Bertozzi, W; Bertin, P Y; Bimbot, L; Böglin, W; Brash, E J; Breton, V; Breuer, H; Burtin, E; Calarco, J R; Cardman, S L; Cates, G D; Cavata, C; Chang, C C; Chen, J P; Cisbani, E; Dale, D S; De Jager, C W; De Leo, R; Deur, A; Diederich, B; Djawotho, P; Domingo, John J; Ducret, J E; Epstein, M B; Ewell, L A; Finn, J M; Fonvieille, H; Frois, B; Frullani, S; Gao, J; Garibaldi, F; Gasparian, A; Gilad, S; Gilman, R; Glamazdin, A; Glashausser, C; Gómez, J; Gorbenko, V; Gorringe, T P; Hersman, F W; Holmes, R; Holtrop, M; D'Hose, N; Howell, C; Huber, G M; Hyde-Wright, C E; Iodice, M; Jaminion, S; Jones, M K; Joo, K; Jutier, C; Kahl, W; Kato, S; Kelly, J J; Kerhoas, S; Khandaker, M; Khayat, M; Kino, K; Korsch, W; Kramer, L; Kumar, K S; Kumbartzki, G; Laveissière, G; Leone, A; Le Rose, J J; Levchuk, L G; Lindgren, R A; Liyanage, N K; Lolos, G J; Lourie, W R; Madey, R; Maeda, K; Malov, S; Manley, D M; Margaziotis, D J; Markowitz, P; Martino, J; McCarthy, J S; McCormick, K; McIntyre, J; Van der Meer, R L J; Meziani, Z E; Michaels, R; Mougey, J; Nanda, S; Neyret, D; Offermann, E; Papandreou, Z; Perdrisat, C F; Perrino, R; Petratos, G G; Platchkov, S; Pomatsalyuk, R I; Prout, D L; Punjabi, V A; Pussieux, T; Quéméner, G; Ransome, R D; Ravel, O; Roblin, Y; Roché, R; Rowntree, D; Rutledge, G A; Rutt, M p; Saha, A; Saitô, T; Sarty, A J; Serdarevic-Offermann, A; Smith, T P; Soldi, A; Sorokin, P; Souder, P A; Suleiman, R; Templon, J A; Terasawa, T; Todor, L; Tsubota, H; Ueno, H; Ulmer, E P; Urciuoli, G M; Vernin, P; van Verst, S; Vlahovic, B; Voskanyan, H; Watson, J W; Weinstein, B L; Wijesooriya, K; Wojtsekhowski, B B; Zainea, D G; Zeps, V; Zhao, J; Zhou, Z L; Vignote, J M; Udias, J R; Debruyne, J; Ryckebuschand, D

    2004-01-01T23:59:59.000Z

    The physics program in Hall A at Jefferson Lab commenced in the summer of 1997 with a detailed investigation of the 16O(e,e'p) reaction in quasielastic, constant (q,w) kinematics at Q^2 ~ 0.8 (GeV/c)^2, q ~ 1 GeV/c, and w ~ 445 MeV. Use of a self-calibrating, self-normalizing, thin-film waterfall target enabled a systematically rigorous measurement. Differential cross-section data for proton knockout were obtained for 0 < Emiss < 120 MeV and 0 < pmiss < 350 MeV/c. These results have been used to extract the ALT asymmetry and the RL, RT, RLT, and RL+TT effective response functions. Detailed comparisons of the data with Relativistic Distorted-Wave Impulse Approximation, Relativistic Optical-Model Eikonal Approximation, and Relativistic Multiple-Scattering Glauber Approximation calculations are made. The kinematic consistency of the 1p-shell normalization factors extracted from these data with respect to all available 16O(e,e'p) data is examined. The Q2-dependence of the normalization factors is also...

  4. 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

    2015-06-01T23:59:59.000Z

    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.

  5. Measurement of the Charge Form Factor of the Neutron $G^{E}_{n}$ from ${\\vec{d}(\\vec{e},e'n)p}$ at $Q^{2}=0.5$ and $1.0 (GeV/c)^{2}$

    E-Print Network [OSTI]

    N. Savvinov

    2002-10-26T23:59:59.000Z

    We determined the electric form factor of the neutron $G_E^n$ via the reaction ${\\vec{d}(\\vec{e},e'n)p}$ using a longitudinally polarized electron beam and a frozen, polarized $^{15}ND_3$ target at Jefferson Lab. The knocked out neutrons were detected in a segmented plastic scintillator in coincidence with the quasi-elastically scattered electrons which were tracked in Hall C's High Momentum Spectrometer. To extract $G_E^n$, we compared the experimental beam--target asymmetry with theoretical calculations based on different $G_E^n$ models. We report the preliminary results of the fall 2001 run at $Q^{2}=0.5$ and $1.0 (GeV/c)^{2}$.

  6. A Measurement of the Electric Form Factor of the Neutron through $\\vec{d}(\\vec{e},e'n)p$ at $Q^2 = 0.5$ (GeV/c)$^2$

    E-Print Network [OSTI]

    E93026 Collaboration; H. Zhu

    2001-05-03T23:59:59.000Z

    We report the first measurement of the neutron electric form factor $G_E^n$ via $\\vec{d}(\\vec{e},e'n)p$ using a solid polarized target. $G_E^n$ was determined from the beam-target asymmetry in the scattering of longitudinally polarized electrons from polarized deuterated ammonia, $^{15}$ND$_3$. The measurement was performed in Hall C at Thomas Jefferson National Accelerator Facility (TJNAF) in quasi free kinematics with the target polarization perpendicular to the momentum transfer. The electrons were detected in a magnetic spectrometer in coincidence with neutrons in a large solid angle segmented detector. We find $G_E^n = 0.04632\\pm0.00616 (stat.) \\pm0.00341 (syst.)$ at $Q^2 = 0.495$ (GeV/c)$^2$.

  7. 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.

  8. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, , ., December 8,JohnResolving7 A Study ofWater

  9. High-Performance Nanostructured Coating- FY13 Q2

    Broader source: Energy.gov [DOE]

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

  10. 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.

  11. 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.

  12. Hydrogen Tank Project Q2 Report - FY 11

    SciTech Connect (OSTI)

    Johnson, Kenneth I.; Alvine, Kyle J.; Skorski, Daniel C.; Nguyen, Ba Nghiep; Kafentzis, Tyler A.; Dahl, Michael E.; Pitman, Stan G.

    2011-05-15T23:59:59.000Z

    Quarterly report that represents PNNL's results of HDPE, LDPE, and industrial polymer materials testing. ASTM D638 type 3 samples were subjected to a high pressure hydrogen environment between 3000 and 4000 PSI. These samples were tested using an instron load frame and were analyzed using a proprietary set of excel macros to determine trends in data. The development of an in-situ high pressure hydrogen tensile testing apparatus is discussed as is the stress modeling of the carbon fiber tank exterior.

  13. 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.

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

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at1,066,688 760,877 951,322 1,381,127by Local(Dollars per61 Domestic

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

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at1,066,688 760,877 951,322 1,381,127by Local(Dollars per61

  16. Microsoft Word - nofear as of Q2 2015 (2).docx

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE625Data ShowC - PatentJuly 2004BPA For 2nd

  17. Significant Cost Improvement of Li-Ion Cells Through Non-NMP...

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

    Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Approach 5 Dry coated electrode Electrode design optimization Binder and electrolyte development Process and equipment optimization...

  18. Q2S Graduate Conversions (rev. 4-13-10) 1 Q2S Conversions for the Graduate Catalog and Graduate Programs

    E-Print Network [OSTI]

    Botte, Gerardine G.

    subsidy requirements. This is reflected on the Degree Audit Report (DARS) as Grad Mass hours. Master

  19. "State","Jan","Feb","Mar","Q1 Total","Apr","May","Jun ","Q2 Total","Jul","Aug","Sep","Q3 Total","Oct","Nov","Dec","Q4 Total","2003 Total"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocksa. AppliancesTotal" "(Data1.3 Total"

  20. "State","Jan","Feb","Mar","Q1 Total","Apr","May","Jun ","Q2 Total","Jul","Aug","Sep","Q3 Total","Oct","Nov","Dec","Q4 Total","2004 Total"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocksa. AppliancesTotal" "(Data1.3 Total"4

  1. "State","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total","Jul","Aug","Sep","Q3 Total","Oct","Nov","Dec","Q4 Total","2002 Total"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocksa. AppliancesTotal" "(Data1.3

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

    E-Print Network [OSTI]

    P. G. Castro; R. Kullock

    2015-03-05T23:59:59.000Z

    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.

  3. DESY-08-202 Measurement of high-Q 2 neutral current

    E-Print Network [OSTI]

    , Italy e D. Bartsch, I. Brock, H. Hartmann, E. Hilger, H.-P. Jakob, M. Jungst, A.E. Nuncio-Quiroz, E

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

    Broader source: Energy.gov [DOE]

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

  5. High-Temperature Solar Selective Coating Development for Power Tower Receivers- 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.

  6. 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.

  7. DESY 97179 ISSN 04189833 Low Q 2 Jet Production at HERA

    E-Print Network [OSTI]

    .K. Kotelnikov 26 , T. Kr¨amerk¨amper 8 , M.W. Krasny 6;30 , H. Krehbiel 11 , D. Kr¨ucker 27 , A. K¨upper 35 , H

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. Moriond QCD, March 18-25 Proton structure at High Q 2 from HERA

    E-Print Network [OSTI]

    Domain explored at HERA Proton probed down to 10 18 m H1 and ZEUS Detectors: NC: both scattered electrons=E(syst) : 8 > : 1 3% LAr em 2 4% LAr had ZEUS Uranium-Scintillator Calorimeter(UCAL): UCAL: 6000 cells #27

  13. 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.

  14. 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.

  15. Absolute cross sections for electron-impact single ionization (q = 2,4-6) ions

    E-Print Network [OSTI]

    , the product NeI £ ¤QP¨RS¤ ions are separated from the primary Ne£ ¤ ion beam by a double-focusing magnet

  16. 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.

  17. Flavor decomposition of the nucleon electromagnetic form factors at low $Q^2$

    E-Print Network [OSTI]

    Qattan, I A; Alsaad, A

    2015-01-01T23:59:59.000Z

    The spatial distribution of charge and magnetization within the proton is encoded in the elastic form factors. These have been precisely measured in elastic electron scattering, and the combination of proton and neutron form factors allows for the separation of the up- and down-quark contributions. In this work, we extract the proton and neutron form factors from world's data with an emphasis on precise new data covering the low-momentum region, which is sensitive to the large-scale structure of the nucleon. From these, we separate the up- and down-quark contributions to the proton form factors. We combine cross section and polarization measurements of elastic electron-proton scattering to separate the proton form factors and two-photon exchange (TPE) contributions. We combine the proton form factors with parameterization of the neutron form factor data and uncertainties to separate the up- and down-quark contributions to the proton's charge and magnetic form factors. The extracted TPE corrections are compare...

  18. Exclusive pi^0 electroproduction in the resonance region at high Q^2

    SciTech Connect (OSTI)

    M. Ungaro, K. Joo

    2012-04-01T23:59:59.000Z

    We present preliminary results from {pi}{sup 0} electroproduction data taken with CLAS at Jefferson Lab. These and other CLAS measurements, coupled with recent theoretical developments, will allow non-perturbative approaches to shed lights on the role of quarks and gluons in nuclei and address issues such as confinement and the non-zero quark mass in the chiral limit.

  19. 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.

  20. Quark-Hadron Duality and Q 2 evolution of the GDH integral

    E-Print Network [OSTI]

    DUALITY = RELATION BETWEEN DIS AND RESONANCE REGIONS Bloom & Gilman, PRL 25 (1970) 1140; PR D4 (1971) 290 t #6; res A res (s; t) #25; #6; jR A jR (s; t) Dolen, Horn & Schmid, PRL 19 (1967) 402; PR 166 (1968, including both resonant and non resonant contributions to cross section Harari, PRL 20 (1968) 1395

  1. http://www.eh.doe.gov/nepa/process/ll/95q2.htm

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

    Program, LANL, Los Alamos, New Mexico 3 Remedial Action at the Slick Rock Uranium Mill Tailings Sites, Slick Rock, Colorado 4 Remedial Action, Uranium Mill Tailings...

  2. 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.

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

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this 3M 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. Inclusive Electron Scattering From Nuclei at x >1 and High Q^2

    SciTech Connect (OSTI)

    John Arrington

    1998-06-02T23:59:59.000Z

    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.

  6. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobsJuly throughR E Q U E N C Y T E CAIKEN,

  7. 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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy andTermsDepartment ofCumminsMaterial |Cost,Cost,

  8. 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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment of EnergyIndustry Research U.S. Department of EnergyEnergy

  9. A high-Q^2 measurement of the photon structure function F_2^gamma at LEP2

    E-Print Network [OSTI]

    R. J. Taylor

    2000-10-05T23:59:59.000Z

    The photon structure function F_2^gamma has been measured at of 706 GeV^2, using a sample of two-photon events with a scattered electron observed in the OPAL electromagnetic endcap calorimeter. The data were taken during the years 1997-1999, when LEP operated at e+e- centre-of-mass energies ranging from 183 to 202 GeV, and correspond to an integrated luminosity of 424 pb^-1. This analysis represents the highest measurement of F_2^gamma made to date.

  10. 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.

  11. RPS Status Report Q1 & Q2 2012 Page 2 I. ABOUT THE RPS AND THIS REPORT

    E-Print Network [OSTI]

    -scale renewable energy development in California, there are other programs that stimulate development of customer- side renewable generation. The California Solar Initiative (CSI) and Self-Generation Incentive Program (SGIP) provide incentives for customers to install renewable distributed generation technologies

  12. The magazine of The University of North Carolina at Charlotte for Alumni and Friends v21 q2 2014 TRAILBLAZERS

    E-Print Network [OSTI]

    Howitt, Ivan

    . Finally, as part of the Board of Governors budget request for the state to invest in new "game, to remind legislators of our critical role in ensuring the prosperity of the region. Cordially, Philip L

  13. Fundamental Corrosion Studies in High-Temperature Molten Salt Systems for Next-Generation CSP Systems- 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.

  14. Q2S E C O N D Q U A R T E R IMPACT REPORT

    E-Print Network [OSTI]

    Hashimoto Dean, CTAHR #12;C T A H R I M P A C T 2 0 1 0 S Aquaponics: Harvesting Food, Creating Synergy to ancient times and are familiar to most people.When combined,the two systems form aquaponics.S.agriculture. Central to CTAHR's aquaponics outreach effort is aquaculture specialist Clyde Tamaru,who is always

  15. 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

    2007-06-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Derek Glazier

    2007-09-30T23:59:59.000Z

    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.

  17. Juraj Bracink, Hadron Structure, Modra, September 2007 Physics with eP collisions at highest Q2

    E-Print Network [OSTI]

    ) Solenoidal magnet Muon system Depleted uranium calorimeter #12;Juraj Braciník, Hadron Structure, Modra

  18. The compact Q=2 Abelian Higgs model in the London limit: vortex-monopole chains and the photon propagator

    E-Print Network [OSTI]

    M. N. Chernodub; R. Feldmann; E. -M. Ilgenfritz; A. Schiller

    2005-02-17T23:59:59.000Z

    The confining and topological properties of the compact Abelian Higgs model with doubly-charged Higgs field in three space-time dimensions are studied. We consider the London limit of the model. We show that the monopoles are forming chain-like structures (kept together by ANO vortices) the presence of which is essential for getting simultaneously permanent confinement of singly-charged particles and breaking of the string spanned between doubly-charged particles. In the confinement phase the chains are forming percolating clusters while in the deconfinement (Higgs) phase the chains are of finite size. The described picture is in close analogy with the synthesis of the Abelian monopole and the center vortex pictures in confining non--Abelian gauge models. The screening properties of the vacuum are studied by means of the photon propagator in the Landau gauge.

  19. Observations from The EV Project in Q4 2013

    SciTech Connect (OSTI)

    John Smart

    2014-02-01T23:59:59.000Z

    This is a summary report for The EV Project 4th quarter 2013 reports. It describes electric vehicle driver driving and charging behavior observed in Q4. It is the same report as the previously approved/published Q3 2013 report, only the numbers have been updated. It is for public release and does not have limited distribution.

  20. 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 ...

  1. Measurements of the generalized electric and magnetic polarizabilities of the proton at low Q2 using the virtual Compton scattering reaction

    E-Print Network [OSTI]

    Bourgeois, P.

    Experimental details of a virtual Compton scattering (VCS) experiment performed on the proton at the MIT-Bates out-of-plane scattering facility are presented. The VCS response functions P[scubscript LL]?P[scubscript ...

  2. Structure of the Nucleotide Radical Formed during Reaction of CDP/TTP with the E441Q-?2?2 of E. coli Ribonucleotide Reductase

    E-Print Network [OSTI]

    Zipse, Hendrik

    The Escherichia coli ribonucleotide reductase (RNR) catalyzes the conversion of nucleoside diphosphates to deoxynucleotides and requires a diferric-tyrosyl radical cofactor for catalysis. RNR is composed of a 1:1 complex ...

  3. Measurement of cross sections of p(e,e'pi^+)n for near pion threshold and high-lying resonances at high Q^2

    SciTech Connect (OSTI)

    Kijun Park

    2012-04-01T23:59:59.000Z

    During the last decade, remarkable experimental data have been collected in an extensive programs to study the excitation of nucleon resonance (N*) at Jefferson Laboratory through pion electroproduction using polarized electron beam and unpolarized proton target. The CEBAF Large Acceptance Spectrometer (CLAS) is well suited for the study of a broad range of kinematics in the invariant mass W and photon virtuality Q{sup 2} with nearly complete angular coverage for the hadronic decays. Electron scattering allows us to probe the effective degrees of freedom in excited nucleon states from meson-baryon to dressed quarks in terms of varying the distance scale. The study of nucleon structure allows us to understand these effective degrees of freedom. In this proceeding, I present preliminary cross sections for single pion production in mass range of high-lying resonances as well as near the pion threshold. Analysis of N{pi}{sup +} cross sections together with N{pi}{sup 0} and N {pi}{pi} exclusive electroproduction data, will allow us for the first time to determine electrocouplings of several high-lying excited proton states (W {ge} 1.6 GeV) at photon virtualities that correspond to the transition toward the dominance of quark degrees of freedom. I also present preliminary result on the E{sub 0+} multipole near pion threshold at 2.0 GeV{sup 2} {le} Q{sup 2} {le} 4.5 GeV{sup 2} using exclusive N{pi}{sup +} electroproduction data.

  4. Measurement of the Deuteron Spin Structure Function $g_{1}^{d(x)}$ for $1(GeV/c)^{2} < Q^{2} < 40 (GeV/c)^{2}$

    E-Print Network [OSTI]

    Anthony, P L; Averett, T; Band, H R; Berisso, M C; Borel, H; Bosted, P E; Bultmann, S L; Buénerd, M; Chupp, T E; Churchwell, S; Court, G R; Crabb, D; Day, D; Decowski, P; De Pietro, P; Erbacher, R; Erickson, R; Feltham, A; Fonvieille, H; Frlez, E; Gearhart, R A; Ghazikhanian, V; Gómez, J; Griffioen, K A; Harris, C; Houlden, M A; Hughes, E W; Hyde-Wright, C E; Igo, G; Incerti, S; Jensen, J; Johnson, J R; King, P M; Kolomensky, Yu G; Kuhn, S E; Lindgren, R; Lombard-Nelsen, R M; Marroncle, J; McCarthy, J; McKee, P; Meyer, Werner T; Mitchell, G; Mitchell, J; Olson, M; Penttila, S; Peterson, G; Petratos, G G; Pitthan, R; Pocanic, D; Prepost, R; Prescott, C; Qin, L M; Raue, B A; Reyna, D; Rochester, L S; Rock, S E; Rondon-Aramayo, O A; Sabatie, F; Sick, I; Smith, T; Sorrell, L; Staley, F; Lorant, S St; Stuart, L M; Szalata, Z M; Terrien, Y; Tobias, A; Todor, L; Toole, T; Trentalange, S; Walz, D; Welsh, R C; Wesselmann, F R; Wright, T R; Young, C C; Zeier, M; Zhu, H; Zihlmann, B

    1999-01-01T23:59:59.000Z

    New measurements are reported on the deuteron spin structure function g_1^d. These results were obtained from deep inelastic scattering of 48.3 GeV electrons on polarized deuterons in the kinematic range 0.01 deuteride (6Li2H) as the target material. Extrapolations of the data were performed to obtain moments of g_1^d, including Gamma_1^d, and the net quark polarization Delta Sigma.

  5. Measurement of the Deuteron Spin Structure Function g_1^d(x) for 1 (GeV/c)^2 < Q^2 < 40 (GeV/c)^2

    E-Print Network [OSTI]

    E155 Collaboration

    1999-04-02T23:59:59.000Z

    New measurements are reported on the deuteron spin structure function g_1^d. These results were obtained from deep inelastic scattering of 48.3 GeV electrons on polarized deuterons in the kinematic range 0.01 deuteride (6Li2H) as the target material. Extrapolations of the data were performed to obtain moments of g_1^d, including Gamma_1^d, and the net quark polarization Delta Sigma.

  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. 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.

    1994-01-01T23:59:59.000Z

    in square brack- ets denote powers of 10. Ar + 3s 3p transition CK [28] Transition rates (s ') BH [32] H [33] MZ [34] 4S3/2 2P I /2 2 2D3/2 P1/2 2 2Ds/2- Pin Ml E2 M1 E2 M1 E2 0.972 1.19[?4] 0.488 0.190 0.122 0.954 3.346[ ?4] 0.462 0... in square brack- ets denote powers of 10. Ar + 2s 2p' transition Transition rates (s ') E, C-MZ [35] C, KD [36] KS [28] 2 2P3/2- Pi/2 Lifetime Pl/2 (ms) M1 M1+E2 E2 1.05[2] 9.52 1.044(2) 2.062[ ?3] 9.58 1.06[2] 9 43 Expt. lifetime 8...

  8. 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.

  9. Search for an exotic S = -2, Q = -2 baryon resonance at a mass near 1862 MeV in quasi-real photoproduction

    E-Print Network [OSTI]

    -real photoproduction A. Airapetian,18 N. Akopov,30 Z. Akopov,30 M. Amarian,8, 30 A. Andrus,16 E.C. Aschenauer,8 W

  10. 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)

    2008-01-01T23:59:59.000Z

    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 ...

  11. gftID l8SCvctixXEPvr15k2yQ2uGuvSdEFB5nju9wRXBT year timestamp

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 Wind Projectsource History ViewZAPZinccell Home Dc'sgftID

  12. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8Li (59AJ76) (See the EnergyTAMANG, APIL. A Multilevel Method3

  13. Geometry of an elliptic-difference equation related to Q4

    E-Print Network [OSTI]

    James Atkinson; Phil Howes; Nalini Joshi; Nobutaka Nakazono

    2015-06-15T23:59:59.000Z

    In this paper, we investigate a nonlinear non-autonomous elliptic difference equation, which was constructed by Ramani, Carstea and Grammaticos by integrable deautonomization of a periodic reduction of the discrete Krichever-Novikov equation, or Q4. We show how to construct it as a birational mapping on a rational surface blown up at eight points in $\\mathbb P^1\\times \\mathbb P^1$, and find its affine Weyl symmetry, placing it in the geometric framework of the Painlev\\'e equations. The initial value space is ell-$A_0^{(1)}$ and its symmetry group is $W(F_4^{(1)})$. We show that the deautonomization is consistent with the lattice-geometry of Q4 by giving an alternative construction, which is a reduction from Q4 in the usual sense. A more symmetric reduction of the same kind provides another example of a second-order integrable elliptic difference equation.

  14. VOLUME 82, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 15 FEBRUARY 1999 Measurements of the Deuteron Elastic Structure Function A Q2 for 0.7 l Q2 l 6.0 GeV c 2

    E-Print Network [OSTI]

    Maryland at College Park, University of

    . Ravel,1 Y. Roblin,1 D. Rowntree,18 G. Rutledge,34 P. M. Rutt,26 A. Saha,31 T. Saito,32 A. J. Sarty,5 A

  15. 3rd quarterly report - July 2007

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2

  16. Far-ultraviolet observations of comet C/2001 Q4 (NEAT) with FIMS/SPEAR

    SciTech Connect (OSTI)

    Lim, Y.-M.; Min, K.-W. [Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Feldman, P. D. [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Han, W. [Korea Astronomy and Space Science Institute (KASI), 776 Daedeokdae-ro, Yuseong-gu, Daejeon 305-348 (Korea, Republic of); Edelstein, J., E-mail: ymlim@kaist.ac.kr [Space Sciences Laboratory, University of California, Berkeley, 7 Gauss Way, Berkeley, CA 94720 (United States)

    2014-02-01T23:59:59.000Z

    We present the results of far-ultraviolet observations of comet C/2001 Q4 (NEAT) that were made with the Far-Ultraviolet Imaging Spectrograph on board the Korean satellite STSAT-1. The observations were conducted in two campaigns during its perihelion approach between 2004 May 8 and 15. Based on the scanning mode observations in the wavelength band of 1400-1700 Å, we have constructed an image of the comet with an angular size of 5°×5°, which corresponds to the central coma region. Several important fluorescence emission lines were detected including S I multiplets at 1429 and 1479 Å, C I multiplets at 1561 and 1657 Å, and the CO A{sup 1}?-X{sup 1}?{sup +} Fourth Positive system; we have estimated the production rates of the corresponding species from the fluxes of these emission lines. The estimated production rate of CO was Q {sub CO} = (2.65 ± 0.63) × 10{sup 28} s{sup –1}, which is 6.2%-7.4% of the water production rate and is consistent with earlier predictions. The average carbon production rate was estimated to be Q{sub C} = ?1.59 × 10{sup 28} s{sup –1}, which is ?60% of the CO production rate. However, the observed carbon profile was steeper than that predicted using the two-component Haser model in the inner coma region, while it was consistent with the model in the outer region. The average sulfur production rate was Q{sub S} = (4.03±1.03) × 10{sup 27} s{sup –1}, which corresponds to ?1% of the water production rate.

  17. WATER PRODUCTION IN COMETS 2001 Q4 (NEAT) AND 2002 T7 (LINEAR) DETERMINED FROM SOHO/SWAN OBSERVATIONS

    SciTech Connect (OSTI)

    Combi, M. R.; Lee, Y. [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109-2143 (United States); Maekinen, J. T. T. [Finnish Meteorological Institute, Box 503, SF-00101 Helsinki (Finland); Bertaux, J.-L.; Quemerais, E. [Centre National de la Recherche Scientifique, Service d'Aeronomie, BP3, 91371 Verrieres le Buisson Cedex (France)], E-mail: mcombi@umich.edu

    2009-06-15T23:59:59.000Z

    The SWAN all-sky camera on the Solar and Heliospheric Observatory (SOHO) spacecraft detected the hydrogen Lyman-alpha (Ly{alpha}) comae of comets 2001 Q4 NEAT and 2002 T7 LINEAR for large portions of their perihelion apparitions in 2003 and 2004. C/2001 Q4 NEAT was observed from 2003 September 14 through 2004 November 2, covering heliocentric distances from 3.23 AU before perihelion to 2.75 AU after, and C/2002 T7 LINEAR was observed from 2003 December 4 through 2004 August 6, covering heliocentric distances from 2.52 AU before perihelion to 2.09 AU after. We combined the full set of comet specific and full-sky observations and used our time-resolved model (TRM), which enables us to extract continuous values of the daily-average value of the water production rate throughout most of this entire period. The average power-law fit to the production rate variation of C/2001 Q4 NEAT with heliocentric distance, r, gives 3.5 x 10{sup 29} r {sup -1.7} and that for C/2002 T7 LINEAR gives 4.6 x 10{sup 29} r {sup -2.0}. Both comets show roughly a factor of 2 asymmetry in activity about perihelion, being more active before perihelion. C/2001 Q4 NEAT showed a production rate outburst about 30 days before perihelion (2004 April 15) and then a large extended increase above the nominal trend from 50 to 70 days after perihelion (2004 July 5-July 25)

  18. 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

  19. Q1: What is the birth date of the employees whose first name is `Franklin'? Q2: Retrieve the names of all employees who work for the `Research' department.

    E-Print Network [OSTI]

    Li, Yanjun "Lisa"

    of all employees who work for the `Research' department. Q3: Retrieve names of departments who have in `Chicago', and also list the name of projects; Q5: Retrieve the salary of every employee; Q6: Retrieve all distinct salary values; Q7: Make a list of all projects that involve an employee whose last name

  20. Beam-Target Double-Spin Asymmetry ALT in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized 3He Target at 1.4<Q2<2.7??GeV2

    E-Print Network [OSTI]

    Huang, Jin

    We report the first measurement of the double-spin asymmetry A[subscript LT] for charged pion electroproduction in semi-inclusive deep-inelastic electron scattering on a transversely polarized [superscript 3]He target. The ...

  1. Precise Extraction of the Neutron Magnetic Form Factor from Quasi-elastic 3He(pol)(e(pol),e') at Q^2 = 0.1-0.6 (GeV/c)^2

    SciTech Connect (OSTI)

    Jens-ole Hansen; Brian Anderson; Leonard Auerbach; Todd Averett; William Bertozzi; Tim Black; John Calarco; Lawrence Cardman; Gordon Cates; Zhengwei Chai; Jiang-Ping Chen; Seonho Choi; Eugene Chudakov; Steve Churchwell; G Corrado; Christopher Crawford; Daniel Dale; Alexandre Deur; Pibero Djawotho; Dipangkar Dutta; John Finn; Haiyan Gao; Ronald Gilman; Oleksandr Glamazdin; Charles Glashausser; Walter Gloeckle; Jacek Golak; Javier Gomez; Viktor Gorbenko; F. Hersman; Douglas Higinbotham; Richard Holmes; Calvin Howell; Emlyn Hughes; Thomas Humensky; Sebastien Incerti; Piotr Zolnierczuk; Cornelis De Jager; John Jensen; Xiaodong Jiang; Cathleen Jones; Mark Jones; R Kahl; H Kamada; A Kievsky; Ioannis Kominis; Wolfgang Korsch; Kevin Kramer; Gerfried Kumbartzki; Michael Kuss; Enkeleida Lakuriqi; Meihua Liang; Nilanga Liyanage; John LeRose; Sergey Malov; Demetrius Margaziotis; Jeffery Martin; Kathy McCormick; Robert McKeown; Kevin McIlhany; Zein-Eddine Meziani; Robert Michaels; Greg Miller; Joseph Mitchell; Sirish Nanda; Emanuele Pace; Tina Pavlin; Gerassimos Petratos; Roman Pomatsalyuk; David Pripstein; David Prout; Ronald Ransome; Yves Roblin; Marat Rvachev; Giovanni Salme; Michael Schnee; Charles Seely; Taeksu Shin; Karl Slifer; Paul Souder; Steffen Strauch; Riad Suleiman; Mark Sutter; Bryan Tipton; Luminita Todor; M Viviani; Branislav Vlahovic; John Watson; Claude Williamson; H Witala; Bogdan Wojtsekhowski; Feng Xiong; Wang Xu; Jen-chuan Yeh

    2006-05-05T23:59:59.000Z

    We have measured the transverse asymmetry A{sub T'} in the quasi-elastic {sup 3}/rvec He/(/rvec e/,e') process with high precision at Q{sup 2}-values from 0.1 to 0.6 (GeV/c){sup 2}. The neutron magnetic form factor G{sub M}{sup n} was extracted at Q{sup 2}-values of 0.1 and 0.2 (GeV/c){sup 2} using a non-relativistic Faddeev calculation which includes both final-state interactions (FSI) and meson-exchange currents (MEC). Theoretical uncertainties due to the FSI and MEC effects were constrained with a precision measurement of the spin-dependent asymmetry in the threshold region of {sup 3}/rvec He/(/rvec e/,e'). We also extracted the neutron magnetic form factor G{sub M}{sup n} at Q{sup 2}-values of 0.3 to 0.6 (GeV/c){sup 2} based on Plane Wave Impulse Approximation calculations.

  2. 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

    2012-05-31T23:59:59.000Z

    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.

  3. Feladatok formalis nyelvek es szintaktikus elemzesuk gyakorlatra II. 1. Adva van a kovetkezo determinisztikus veges automata: M = ({q0, q1, q2, q3}, {0, 1}, , q0, {q0}).

    E-Print Network [OSTI]

    Németh, Zoltán L.

    ´eges automat´akat, amelyek az al´abbi nyelveket ismerik fel: a) L1 = {w : w 01-gyel kezdodik } b) L2 = {w : w-ben van legal´abb h´arom darab 1-es } c) L3 = {w : w legal´abb h´arom darab 1-esre v´egzodik} d) L4 = {w : w pontosan h´arom darab 1-esre v´egzodik} e) L5 = {w : w-ben a 010 elofordul r

  4. 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

    2012-02-10T23:59:59.000Z

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

  5. 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

    2005-12-01T23:59:59.000Z

    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.

  6. VOLUME 82, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 15 FEBRUARY 1999 Precise Measurement of the Deuteron Elastic Structure Function A Q2

    E-Print Network [OSTI]

    Maryland at College Park, University of

    . Roos,3 P. Rutt,6 R. Sawafta,10 S. Stepanyan,9 R. Tieulent,4 E. Tomasi-Gustafsson,1,11 W. Turchinetz,7 K

  7. 4

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

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  8. 4

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

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  9. 4.2 < 8 >

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

  10. 4.4 < 8 >

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

  11. 2012_Q4

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

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE) |2 National EnergyDepartment of|2START STOP2 -

  12. 2013_Q4.indd

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

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE) |2Department

  13. Professional Worker Career Experience Survey (PWCES) Data and Metadata

    E-Print Network [OSTI]

    Rosenbloom, Joshua L.; Ash, Ronald A.

    2009-10-06T23:59:59.000Z

    qname,question,QPage,type,DataType,value,answer,Measuring,Source Q1,My current job title is,1,text,text,,,Work History,ITWF Q2,How long have you been in your current position?,1,text,numeric,,,,ITWF Q3,How long have you been with your current... employer?,1,text,numeric,,,Work History,ITWF Q4,My current career field is classified as,1,select,numeric,99,Select One,,ITWF Q4,,1,select,numeric,1,Management/Financial/Professional ,, Q4,,1,select,numeric,2,Computer/Mathematical ,, Q4,,1,select,numeric,3...

  14. Bill Bradbury Jennifer Anders

    E-Print Network [OSTI]

    Updated Resource Needs Assessment Draft Resource and Action Plan Public Comment Q3 Q4 Q2 2015 Draft PlanForecast ModelModel EBaseline Energy Efficiency ResourceEnergy Efficiency Resource Potential AssessmentGenerating Resource Potential AssessmentAssessment Supply Side Resource Cost & Availability gygy efficiencyefficiency

  15. Communication and Control for Quantum Circuits

    E-Print Network [OSTI]

    Patel, Yatish

    2010-01-01T23:59:59.000Z

    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. ONE+TWO TEST ONE TEST TWO HW 1HW 2 HW 3 HW 4 HW 5 HW ...

    E-Print Network [OSTI]

    Nung Kwan Yip

    2015-04-30T23:59:59.000Z

    L M N O P Q R. ONE+TWO TEST ONE TEST TWO HW 1HW 2 HW 3 HW 4 HW 5 HW 6 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 QX. 100 50. 50. 100. 100. 100. 100. 100. 100.

  17. DIS2001 Bologna 2701 May 2001

    E-Print Network [OSTI]

    PDFs Herwig5.9: * MRSA for the proton * SaS1D­LO parametrization of #3; PDFs * GRV­LO parametrization(#22; 2 =Q 2 ) non­pQCD #24; Q -4 Lepto: * MRSA for the proton * direct photons only ­ Dorian Kcira

  18. 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

  19. Optimisations for quadrature representations of finite element tensors through automated code generation

    E-Print Network [OSTI]

    Oelgaard, Kristian B; Wells, G N

    2009-07-20T23:59:59.000Z

    = 1, q = 2 608 13.77 3084 6.62 12412 1.69 52124 0.81 p = 1, q = 3 2660 29.11 12432 12.26 46528 3.30 205424 1.30 p = 1, q = 4 7955 57.90 38007 20.99 155751 5.14 622679 2.04 p = 2, q = 1 314 6.02 3336 1.75 34984 0.40 359984 0.08 p = 2, q = 2 1838 11...

  20. 414_1-1c

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3 Q414.1-1C

  1. 41737 Final

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3

  2. 42677RPSEA | netl.doe.gov

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3

  3. 43029CO2Prod | netl.doe.gov

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3Carbon

  4. 43291-1-8-eerc | netl.doe.gov

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2 Q3CarbonSubtask

  5. 456-Mike.indd

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

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  6. 4600.2 EERE RD&D

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    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2. Identification

  7. 4600.2 FE

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

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  8. 4600.2 OE

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

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  9. 4H

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1 Q2.IdentificationH

  10. U.S. Residential Photovoltaic (PV) System Prices, Q4 2013 Benchmarks: Cash Purchase, Fair Market Value, and Prepaid Lease Transaction Prices

    SciTech Connect (OSTI)

    Davidson, C.; James, T. L.; Margolis, R.; Fu, R.; Feldman, D.

    2014-10-01T23:59:59.000Z

    The price of photovoltaic (PV) systems in the United States (i.e., the cost to the system owner) has dropped precipitously in recent years, led by substantial reductions in global PV module prices. This report provides a Q4 2013 update for residential PV systems, based on an objective methodology that closely approximates the book value of a PV system. Several cases are benchmarked to represent common variation in business models, labor rates, and module choice. We estimate a weighted-average cash purchase price of $3.29/W for modeled standard-efficiency, polycrystalline-silicon residential PV systems installed in the United States. This is a 46% decline from the 2013-dollar-adjusted price reported in the Q4 2010 benchmark report. In addition, this report frames the cash purchase price in the context of key price metrics relevant to the continually evolving landscape of third-party-owned PV systems by benchmarking the minimum sustainable lease price and the fair market value of residential PV systems.

  11. Measurements of the neutron electric to magnetic form-factor ratio G(En) / G(Mn) via the H-2(polarized-e, e-prime,polarized-n)H-1 reaction to Q**2 = 1.45-(GeV/c)**2

    SciTech Connect (OSTI)

    Bradley Plaster; A.Yu. Semenov; A. Aghalaryan; Erick Crouse; Glen MacLachlan; Shigeyuki Tajima; William Tireman; Abdellah Ahmidouch; Brian Anderson; Hartmuth Arenhovel; Razmik Asaturyan; O. Baker; Alan Baldwin; David Barkhuff; Herbert Breuer; Roger Carlini; Michael Christy; Steve Churchwell; Leon Cole; Samuel Danagoulian; Donal Day; T. Eden; Mostafa Elaasar; Rolf Ent; Manouchehr Farkhondeh; Howard Fenker; John Finn; Liping Gan; Ashot Gasparian; Kenneth Garrow; Paul Gueye; Calvin Howell; Bitao Hu; Mark Jones; James Kelly; Cynthia Keppel; Mahbubul Khandaker; Wooyoung Kim; Stanley Kowalski; Allison Lung; David Mack; Richard Madey; D. Manley; Pete Markowitz; Joseph Mitchell; Hamlet Mkrtchyan; Allena Opper; Charles Perdrisat; Vina Punjabi; Brian Raue; Tilmann Reichelt; Joerg Reinhold; Julie Roche; Yoshinori Sato; Nikolai Savvinov; Irina Semenova; Wonick Seo; Neven Simicevic; Gregory Smith; Stepan Stepanyan; Vardan Tadevosyan; Liguang Tang; Shawn Taylor; Paul Ulmer; William Vulcan; John Watson; Steven Wells; Frank Wesselmann; Stephen Wood; Seunghoon Yang; Lulin Yuan; Wei-Ming Zhang; Hong Guo Zhu; Xiaofeng Zhu

    2006-02-01T23:59:59.000Z

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

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

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA - 2008 © OECD/IEA -to FiveSquare

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

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA - 2008 © OECD/IEA -to

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

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA - 2008 © OECD/IEA

  15. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total","Jul","Aug","Se

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA - 2008 ©

  16. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total","Jul","Aug","Se

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA - 2008

  17. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total","Jul","Aug","Se

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA -

  18. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total","Jul","Aug","Se

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470 4,364,790AMOUNT(DOLLARS)","DESCRIPTION"OECD/IEA

  19. state","Jan","Feb","Mar","Q1 Total","Apr","May","Jun","Q2 Total","Jul","Aug","Se

    U.S. Energy Information Administration (EIA) 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 onYou are nowTotal" (Percent) Type: Sulfur Content4,367,470

  20. 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

  1. A Least-Squares Transport Equation Compatible with Voids

    E-Print Network [OSTI]

    Hansen, Jon

    2014-04-22T23:59:59.000Z

    . DERIVATION OF EQUATION Let us begin the derivation of our least-squares equation with the first-order monoenergetic transport equation, L? = S? + q 4pi = ?s?+ q 4pi = Q , (2.1) where ? (n/cm2-s-str) is the angular flux, ? (n/cm2-s) is the scalar flux defined... by ? = ? 4pi ? d?, q (n/cm 3-s) is the distributed source, and L is the streaming plus removal operator, L = ?? ? · ?? ? + ?t , (2.2) S is the scattering operator, S = ?s 4pi ? 4pi d? , (2.3) ?t (cm?1) denotes the macroscopic total cross section and ?s...

  2. Theoretical Determination of the $?N?$ Electromagnetic Transition Amplitudes in the $?(1232)$ Region

    E-Print Network [OSTI]

    Milton Dean Slaughter

    1999-03-08T23:59:59.000Z

    We utilize non-perturbative and fully relativistic methods to calculate the\\thinspace \\thinspace $\\Delta N\\gamma $ electromagnetic transition amplitudes $G_{M}^{*}(q^{2})$ (related to the magnetic dipole moment $% M_{1^{+}}^{3/2}(q^{2})$), $G_{E}^{*}(q^{2})$ (related to the electric quadrupole moment $E_{1^{+}}^{3/2}(q^{2})$), the electromagnetic ratio $% R_{EM}(q^{2})\\equiv -G_{E}^{*}(q^{2})/G_{M}^{*}(q^{2})=E_{1^{+}}^{3/2}(q^{2})/M_{1^{+}}^{3/2}(q^{2} ) $, and discuss their $q^{2}$ behavior in the $\\Delta (1232)$ mass region. These are very important quantities which arise in all viable quark, QCD, or perturbative QCD models of pion electroproduction and photoproduction.

  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. A computational approach to study the effect of multiple lymphangion coordination on lymph flow

    E-Print Network [OSTI]

    Madabushi Venugopal, Arun

    2005-11-01T23:59:59.000Z

    by dt dQ 2 L Q 2 R Q)()(P in inin0in +?+?+??=? in RVVtEP , (8) where E(t) represents the elastance given by Eq. 6. The flows in the system are calculated by differentiating the volume (V), assuming conservation of mass...?s?cm -5 . When we equate the pressures at the inlet and outlet end, the resulting equation can be written as dt dQ 2 L Q 2 R Q dt dQ 2 L Q 2 R Q P-P out outout in inin outin +?+?+ +?+? = out in R R...

  5. FY11 Q4 SHPM Whitepaper DRAFT

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

    the operational response measurements so that changes in the average response of the turbine with respect to rotor position could be investigated. Rotational resampling is the...

  6. Microchannel Receiver Development- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Oregon State University project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  7. FY11 Q4 SHPM Whitepaper DRAFT

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederalFY 2008 FOIA -MetricsBudget of Energyf i cN

  8. al:=proc(x) if xod: q

    E-Print Network [OSTI]

    Davis, Donald M.

    end: prev:=proc(i) local j: for j from i by -1 while q[j]=0 do od: q [j] end: w:=14: q:=array(1..2^w+2*w): for i from 1 to 2^w+2*w do q[i]:=0 od: r:=array(1..2^w+2*w): for i from 1 to 2^w+2*w do r[i]:=0 od: q[1]:=2^(w+1)-2: q[2]:=2^(w+1)-1: q[3]:=2^(w+1)-1: q[4]:=2^(w+1) +1: r[1]:="Mi": r[2]:="BB": r[3

  9. Bose-Einstein Correlations in W+W- events at LEP2

    E-Print Network [OSTI]

    The DELPHI Collaboration; J. Abdallah

    2005-07-14T23:59:59.000Z

    Bose-Einstein correlations (BEC) between final state particles in the reaction e+e- -> W+W- -> q_1 anti-q_2 q_3 anti-q_4 have been studied. Data corresponding to a total integrated luminosity of 550 pb^{-1}, recorded by the DELPHI detector at centre-of-mass energies ranging from 189 to 209 GeV, were analysed. An indication for inter-W BEC between like-sign particles has been found at the level of 2.4 standard deviations of the combined statistical and systematic uncertainties.

  10. JOURNAL DE PHYSIQUE Colloque C3, supplkment au n09, Tome 48, septembre 1987

    E-Print Network [OSTI]

    Boyer, Edmond

    law of s c a t t e r i n g function, t h e spinodal theory and the dynamic scaling law. Article n ~ ) / i ) range (0.06rqr6 nm-1) w i t h tRe pulsed c o l d neutron small anqle scatterinq u n c t i o n p t t h e high $ side iin o t o i i y proportional t o q-2, q-4 an! 4-6.but i t obeys

  11. BeamlineEXP1&EXP3 88030.491660

    E-Print Network [OSTI]

    .4 87310.4 88030.491660 92115 BPM3 Spectrometer DipoleB1 94075 96220 97340 2145 1120 455.2 93000 (94062.5) (96207.5)(97327.5) 85830.4 14801030 700 Q5 (Q1EXP3) BPM1BPM2Q4Q1 + H1 Q2Q3 + H2W W 418ToroidT7 Toroid T8 Matrix If the bpm's are calibrated and the resolution known, then the rms energy resolution yields: 1

  12. 4He Cross Section

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q1

  13. 4He Cross Section

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X) (Current

  14. 4Li

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X)

  15. 4_scienceFrontiers

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X)

  16. 4th International Conference Proceedings

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X)

  17. 5

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X)5.0 -

  18. 5

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X)5.0 -7.0

  19. 5 - Codes DNS-LES-RANS.key

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α, X)5.0

  20. 5(b)/9(c) Final Revised Policy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α,at

  1. 5(b)/9(c) Record of Decision

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4 Q14He(α,atRevised

  2. 5(b)9(c) Administrator's Record of Decision, May 2000

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4

  3. 5-Carbon Alcohols for Drop-in Gasoline Replacement - Energy Innovation

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4Portal Vehicles

  4. 5-Week Weight Management Class - HPMC Occupational Health Services

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4Portal

  5. 5-address

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4Portal

  6. 5. Développements méthodologiques

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4PortalAVP Meeting,

  7. 5/3/2013

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4PortalAVP

  8. 500kVsingle

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4PortalAVPCircuit

  9. 51979 hearing public 012610.ptx

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, AlgeriaQ1 Q2 Q3 Q4PortalAVPCircuitof

  10. Vol. 3 (2010) Acta Physica Polonica B Proceedings Supplement No 1 HADRONIC FORM FACTORS

    E-Print Network [OSTI]

    Siegen, Universität

    2010-01-01T23:59:59.000Z

    function of jµ = dµc and j5 = mcci5u currents: Fµ(p, q) = d4 xeiqx (p)|T{jµ(x)j5(0)}|0 = F((p + q)2 , q2

  11. High-Temperature Solar Selective Coating Development for Power...

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

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

  12. 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

  13. Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections

    E-Print Network [OSTI]

    Feldman, David

    2014-01-01T23:59:59.000Z

    global scope of most solar companies, analysts often projectSolar Market Insight Report: Q2 2012. ” Stifel, Nicolaus & Company,

  14. Validation Testing for the PM-PEMS Measurement Allowance Program

    E-Print Network [OSTI]

    Johnson, K; Durbin, T; Jung, H; Cocker III, D R; Khan, M Y

    2010-01-01T23:59:59.000Z

    at >4lpm Q1 & 20ccm Q2 N2 at 4lpm Q1 & ccm Q2 N2 at 0lpmQ1 & ccm Q2 No tube on Q1 (open to atm) Pump to MEL

  15. Measurement of Charged-Current e Deep Inelastic Scattering Cross Sections

    E-Print Network [OSTI]

    . The explored kinematic region was extended to high Q 2 and high x regions; d#27;=dQ 2 was measured up to Q 2 Tracking Detector (CTD) . . . . . . . . . . . . . . . . 17 3.2.2 Uranium-Scintillator Calorimeter (CAL . . . . . . . . . . . . . . . . . . . . 31 i #12; ii CONTENTS 4.4.1 Uranium-noise and spark suppression . . . . . . . . . . . . . . 3

  16. Energy Efficiency and Conservation Block Grant (EECBG): Better Buildings Neighborhood Program Final Report

    SciTech Connect (OSTI)

    Donnelly, Kat A.

    2014-01-10T23:59:59.000Z

    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.

  17. Scaling study of the pion electroproduction cross sections and the pion form factor

    SciTech Connect (OSTI)

    Tanja Horn; Xin Qian; John Arrington; Razmik Asaturyan; Fatiha Benmokthar; Werner Boeglin; Peter Bosted; Antje Bruell; Eric Christy; Eugene Chudakov; Ben Clasie; Mark Dalton; AJI Daniel; Donal Day; Dipangkar Dutta; Lamiaa El Fassi; Rolf Ent; Howard Fenker; J. Ferrer; Nadia Fomin; H. Gao; K Garrow; Dave Gaskell; C Gray; G. Huber; M. Jones; N Kalantarians; C. Keppel; K Kramer; Y Li; Y Liang; A. Lung; S Malace; P. Markowitz; A. Matsumura; D. Meekins; T Mertens; T Miyoshi; H. Mykrtchyan; R. Monson; T. Navasardyan; G. Niculescu; I. Niculescu; Y. Okayasu; A. Opper; C Perdrisat; V. Punjabi; A. Rauf; V. Rodriguez; D. Rohe; J Seely; E Segbefia; G. Smith; M. Sumihama; V. Tadevoyan; L Tang; V. Tvaskis; A. Villano; W. Vulcan; F. Wesselmann; S. Wood; L. Yuan; X. Zheng

    2007-07-12T23:59:59.000Z

    The $^{1}$H($e,e^\\prime \\pi^+$)n cross section was measured for a range of four-momentum transfer up to $Q^2$=3.91 GeV$^2$ at values of the invariant mass, $W$, above the resonance region. The $Q^2$-dependence of the longitudinal component is consistent with the $Q^2$-scaling prediction for hard exclusive processes. This suggests that perturbative QCD concepts are applicable at rather low values of $Q^2$. Pion form factor results, while consistent with the $Q^2$-scaling prediction, are inconsistent in magnitude with perturbative QCD calculations. The extraction of Generalized Parton Distributions from hard exclusive processes assumes the dominance of the longitudinal term. However, transverse contributions to the cross section are still significant at $Q^2$=3.91 GeV$^2$.

  18. Advanced Manufacture of Reflectors- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this University of Arizona project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  19. CSP Tower Air Brayton Combustor- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this SWRI project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  20. Supercritical Carbon Dioxide Turbo-Expander- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this SWRI project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  1. Scattering Solar Thermal Concentrators- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Penn State project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  2. Next Generation Solar Collectors for CSP- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this 3M project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  3. Experimental determination of the effective strong coupling constant

    SciTech Connect (OSTI)

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

    2005-09-15T23:59:59.000Z

    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.

  4. Basics of advanced software Lecture 5 monoprocessor scheduling & basics of

    E-Print Network [OSTI]

    Navet, Nicolas

    ) that can be achieved on a CAN bus at 500 kbit/s ? · Q2: is it possible to trigger the opening of an airbag

  5. Generalized statistical methods for mixed exponential families

    E-Print Network [OSTI]

    Levasseur, Cécile

    2009-01-01T23:59:59.000Z

    sci.med vs. mac,ibm): kmeans on GLS subspace (q=2) Figureeconomic ROC curve, LDA after kmeans on latent subspace, q =

  6. Thermal conduction by dark matter with velocity and momentum-dependent cross-sections

    E-Print Network [OSTI]

    Aaron C. Vincent; Pat Scott

    2014-04-23T23:59:59.000Z

    We use the formalism of Gould and Raffelt to compute the dimensionless thermal conduction coefficients for scattering of dark matter particles with standard model nucleons via cross-sections that depend on the relative velocity or momentum exchanged between particles. Motivated by models invoked to reconcile various recent results in direct detection, we explicitly compute the conduction coefficients $\\alpha$ and $\\kappa$ for cross-sections that go as $v_{\\rm rel}^2$, $v_{\\rm rel}^4$, $v_{\\rm rel}^{-2}$, $q^2$, $q^4$ and $q^{-2}$, where $v_{\\rm rel}$ is the relative DM-nucleus velocity and $q$ is the momentum transferred in the collision. We find that a $v_{\\rm rel}^{-2}$ dependence can significantly enhance energy transport from the inner solar core to the outer core. The same can true for any $q$-dependent coupling, if the dark matter mass lies within some specific range for each coupling. This effect can complement direct searches for dark matter; combining these results with state-of-the-art Solar simulations should greatly increase sensitivity to certain DM models. It also seems possible that the so-called Solar Abundance Problem could be resolved by enhanced energy transport in the solar core due to such velocity- or momentum-dependent scatterings.

  7. Measurement of the Electric Charge of the Top Quark in $\\boldsymbol{t\\bar{t}}$ Events

    E-Print Network [OSTI]

    D0 Collaboration

    2014-09-25T23:59:59.000Z

    We present a measurement of the electric charge of top quarks using $t\\bar{t}$ events produced in $p\\bar{p}$ collisions at the Tevatron. The analysis is based on fully reconstructed $t\\bar{t}$ pairs in lepton+jets final states. Using data corresponding to 5.3 $\\rm fb^{-1}$ of integrated luminosity, we exclude the hypothesis that the top quark has a charge of $Q=-4/3\\,e$ at a significance greater than 5 standard deviations. We also place an upper limit of 0.46 on the fraction of such quarks that can be present in an admixture with the standard model top quarks ($Q=+2/3\\,e$) at a 95\\% confidence level.

  8. Final Exam/Fall 1998 Math 351 Name (10) 1. Find a 2 × 2 matrix A ...

    E-Print Network [OSTI]

    1910-10-62T23:59:59.000Z

    ... be a 2 × 2 matrix, Q1 = [1, -1]t and Q2 = [3, -2]t. Assume that. AQ1 = 4Q1 , AQ2 = 9Q2. (i) Find an invertible matrix Q and a diagonal matrix D such that A = QDQ.

  9. 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

    2006-01-01T23:59:59.000Z

    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 ...

  10. The Differential Effects of Oil Demand and Supply Shocks on the Global Economy

    E-Print Network [OSTI]

    Cashin, Paul; Mohaddes, Kamiar; Raissi, Maziar; Raissi, Mehdi

    2012-11-01T23:59:59.000Z

    We employ a set of sign restrictions on the generalized impulse responses of a Global VAR model, estimated for 38 countries/regions over the period 1979Q2.2011Q2, to discriminate between supply-driven and demand-driven oil-price shocks and to study...

  11. Basics of advanced software Lecture 5 monoprocessor scheduling & basics of

    E-Print Network [OSTI]

    Navet, Nicolas

    /s ? · Q2: is it possible to trigger the opening of an airbag· Q2: is it possible to trigger the opening of an airbag through a 125kbit/s CAN bus ? 30/03/2012N. Navet - Basics of Advanced Software Systems - Univers

  12. Moments of the Spin Structure Functions g_1^p and g_1^d for 0.05 3.0 GeV^2

    E-Print Network [OSTI]

    Y. Prok; P. Bosted; V. D. Burkert; A. Deur; K. V. Dharmawardane; G. E. Dodge; K. A. Griffioen; S. E. Kuhn; R. Minehart; the CLAS Collaboration

    2009-06-08T23:59:59.000Z

    The spin structure functions g_1 for the proton and the deuteron have been measured over a wide kinematic range in x and Q2 using 1.6 and 5.7 GeV longitudinally polarized electrons incident upon polarized NH_3 and ND_3 targets at Jefferson Lab. Scattered electrons were detected in the CEBAF Large Acceptance Spectrometer, for 0.05 < Q^2 < 5 GeV^2 and W < 3 GeV. The first moments of g_1 for the proton and deuteron are presented -- both have a negative slope at low Q^2, as predicted by the extended Gerasimov-Drell-Hearn sum rule. The first result for the generalized forward spin polarizability of the proton gamma_0^p is also reported. This quantity shows strong Q^2 dependence at low Q^2, while Q^6\\gamma_0^p seems to flatten out at the highest Q^2 accessed by our experiment. Although the first moments of g_1 are consistent with Chiral Perturbation Theory (ChPT) calculations up to approximately Q^2 = 0.06 GeV^2, a significant discrepancy is observed between the \\gamma_0^p data and ChPT for gamma_0^p, even at the lowest Q2.

  13. arXiv:1406.2962v1[hep-ph]11Jun2014 Reduction of the proton radius discrepancy by 3

    E-Print Network [OSTI]

    of the electric and magnetic Sachs form factors GE(Q2 ) and GM (Q2 ), respectively, that depend on the invariant approach was car- ried out by Hill and Paz [4]. In contrast to their analysis, we do not constrain

  14. 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

    2006-02-27T23:59:59.000Z

    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.

  15. 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

  16. Jets in Deep Inelasic Scattering at HERA Joachim Meyer

    E-Print Network [OSTI]

    Jets in Deep Inelasic Scattering at HERA Joachim Meyer DESY and CERN On behalf of H1 AND ZEUS with QCD predictions . Extraction of # s Joachim Meyer Rencontre des Moriond, Les Arc, March 2000 1 #12 ( ZEUS Detector) l l' Q 2 = ­q 2 p x Bj QPM Diagram Joachim Meyer Rencontre des Moriond, Les Arc, March

  17. Universidad Simn Bolvar FS2211 1er Parcial (30 %) Bloque B Departamento de Fsica Mircoles, 30 de Enero de 2013

    E-Print Network [OSTI]

    Vásquez, Carlos

    = +Q = +10-6 C; el valor de q2 queda por determinar. La masa de la carga de prueba es m0. q2 q1 q3 -q0.] Determine el campo eléctrico E en todas las regiones del espacio. (c) [2 pts.] Determine las densidades de

  18. Regularizing Inverse Problems

    E-Print Network [OSTI]

    Wang, Fang

    2014-06-26T23:59:59.000Z

    (q) include ?q??(2@L^(2 ) )??q??(2@H^(1) ), |q|BV and |q|TV. However, each of these has its limitations. In this work, we develop a novel H^(s) seminorm regularization method and present numerical results for model problems. This method relies...

  19. Momentum transfer dependence of the proton's electric and magnetic polarizabilities

    E-Print Network [OSTI]

    Hall, N L; Young, R D

    2014-01-01T23:59:59.000Z

    The Q^2-dependence of the sum of the electric and magnetic polarizabilities of the proton is calculated over the range 0 \\leq Q^2 \\leq 6 GeV^2 using the generalized Baldin sum rule. Employing a parametrization of the F_1 structure function valid down to Q^2 = 0.06 GeV^2, the polarizabilities at the real photon point are found by extrapolating the results of finite Q^2 to Q^2 = 0 GeV^2. We determine the evolution over four-momentum transfer to be consistent with the Baldin sum rule using photoproduction data, obtaining \\alpha + \\beta = 13.7 \\pm 0.7 \\times 10^{-4}\\, \\text{fm}^3.

  20. 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

    2012-11-29T23:59:59.000Z

    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.

  1. Final_report_pub1.pdf

    SciTech Connect (OSTI)

    O'BRIEN, NICHOLAS [Soitec Solar Industries LLC; O'BRIEN, NICHOLAS

    2014-08-15T23:59:59.000Z

    The paper describes Soitecs project to plan,install,qualify and ramp a high volume CPV module manufactruing facility in Southern California. Soitec’s CPV module factory in San Diego was planned with an annual production capacity of 280MWDC. It was scheduled to be operational by the first quarter of 2013, and was expected to create several hundred direct and indirect jobs in the San Diego region. From ground breaking to facility readiness was completed in six months. This enabled the docking of equipment in the Q3’12 time frame. The first 140 MW of capacity was ready for operation in Q4’12. Production of the CX-M500 modules started in Q4 2012. The line yield and factory capacity were ramped in 2013. The annual production capacity demonstration was successfully completed in Q2 2014. The modules manufactured at the plant were used to supply utility scale demand in the US and also world markets.

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

    SciTech Connect (OSTI)

    Kang, Hoyoung [Seoul National University, Seoul, Korea

    2014-08-01T23:59:59.000Z

    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.

  3. Phonon-roton modes of liquid 4He beyond the roton in MCM-41

    SciTech Connect (OSTI)

    Azuah, Richard T [NIST Center for Neutron Research (NCRN), Gaithersburg, MD] NIST Center for Neutron Research (NCRN), Gaithersburg, MD; Omar Diallo, Souleymane [ORNL] ORNL; Adams, Mark A. [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] ISIS Facility, Rutherford Appleton Laboratory (ISIS); Kirichek, Oleg [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] ISIS Facility, Rutherford Appleton Laboratory (ISIS); Glyde, Henry R [University of Delaware] University of Delaware

    2013-01-01T23:59:59.000Z

    We present neutron scattering measurements of the phonon-roton (P-R) mode of superfluid 4He confined in 47 A MCM-41 at T = 0.5 K at wave vectors, Q, beyond the roton wave vector (QR = 1.92 A-1). Measurements beyond the roton require access to high wave vectors (up to Q = 4 A-1) with excellent energy resolution and high statistical precision. The present results show for the first time that at T = 0.5 K the P-R mode in MCM-41 extends out to wave-vector Q 3.6 A-1 with the same energy and zero width (within precision) as observed in bulk superfluid 4He. Layer modes in the roton region are also observed. Specifically, the P-R mode energy, !Q, increases with Q for Q > QR and reaches a plateau at a maximum energy !Q = 2 where is the roton energy, = 0.74 0.01 meV in MCM-41. This upper limit means the P-R mode decays to two rotons when its energy exceeds 2 . It also means that the P-R mode does not decay to two layers modes. If the P-R could decay to two layer modes, !Q would plateau at a lower energy, !Q = 2 L where L = 0.60 meV is the energy of the roton like minimum of the layer mode. The observation of the P-R mode with energy up to 2 shows that the P-R mode and the layer modes are independent modes with apparently little interaction between them.

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

    E-Print Network [OSTI]

    F. Hautmann

    2006-10-06T23:59:59.000Z

    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.

  5. Update of MRST parton distributions.

    E-Print Network [OSTI]

    Thorne, Robert S; Martin, A D; Stirling, W James; Roberts, R G

    knowledge of the partonic structure of the proton is an essential ingredient in the analysis of hard scattering data from pp or p¯p or ep high energy collisions. Much at- tention has recently been devoted to obtaining reliable uncertainties on the parton... photons than dnV (x) quarks. To a rough approximation, the photon distribution should be ?(x,Q2) = ? j e2j ? 2pi ln(Q2/m2q) ? 1 x dy y P?q(y) qj( x y ,Q2). So there is more photon momentum in the proton than in the neutron due to high-x up quarks radiating...

  6. An analysis of $?_b^0 \\rightarrow ??^+?^-$ decays at the LHCb experiment

    E-Print Network [OSTI]

    L. Pescatore; for for the LHCb Collaboration

    2015-04-17T23:59:59.000Z

    The branching fraction of the rare decay $\\Lambda_b^0 \\rightarrow \\Lambda \\mu^+ \\mu^-$ is measured as a function of $q^2$, the square of the dimuon invariant mass. The analysis is performed using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected by the LHCb experiment. Evidence of signal is found for the first time in the $q^2$ region below the square of the J/$\\psi$ mass. In the $q^2$ intervals where the signal is observed, angular distributions are studied and two forward-backward asymmetries, in the dimuon and hadronic systems, are measured for the first time.

  7. Generalized Electric Polarizability of the Proton from Skyrme Model

    E-Print Network [OSTI]

    Myunggyu Kim; Dong-Pil Min

    1997-04-23T23:59:59.000Z

    We calculate the electric polarizability $\\alpha(q^2)$ of the proton in virtual Compton scattering using the Skyrme model. The $q^2$ dependence of the polarizability is comparable with the predictions obtained from the non-relativistic quark model and the linear sigma model. The chiral behaviors of our $\\alpha(0)$ and $d^2\\alpha(0)/d^2q^2$ agree with the results of the chiral perturbation theory. The discrepancy can be traced back to the contribution of the intermediate $\\Delta$ state degenerate with the $N$ which is a characteristic of a large-$N_C$ model.

  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. 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

    2014-11-14T23:59:59.000Z

    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 \

  10. Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2

    E-Print Network [OSTI]

    R. J. Taylor

    2001-10-15T23:59:59.000Z

    The hadronic structure function of the photon F_2^gamma is measured as a function of Bjorken x and of the factorisation scale Q^2 using data taken by the OPAL detector at LEP. Previous OPAL measurements of the x dependence of F_2^gamma are extended to an average Q^2 of 767 GeV^2. The Q^2 evolution of F_2^gamma is studied for average Q^2 between 11.9 and 1051 GeV^2. As predicted by QCD, the data show positive scaling violations in F_2^gamma. Several parameterisations of F_2^gamma are in agreement with the measurements whereas the quark-parton model prediction fails to describe the data.

  11. Double spin asymmetry in exclusive rho^0 muoproduction at COMPASS

    E-Print Network [OSTI]

    COMPASS Collaboration; M. Alekseev

    2007-07-10T23:59:59.000Z

    The longitudinal double spin asymmetry A_1^rho for exclusive leptoproduction of rho^0 mesons, mu + N -> mu + N + rho, is studied using the COMPASS 2002 and 2003 data. The measured reaction is incoherent exclusive rho^0 production on polarised deuterons. The Q^2 and x dependence of A_1^rho is presented in a wide kinematical range: 3x10^-3 < Q^2 < 7 (GeV/c)^2 and 5x10^-5 < x < 0.05. The presented results are the first measurements of A_1^rho at small Q2 (Q2 < 0.1 (GeV/c)^2) and small x (x < 3x10^-3). The asymmetry is in general compatible with zero in the whole kinematical range.

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

    Gasoline and Diesel Fuel Update (EIA)

    Metals 758 646 529 332 Fabricated Metal Products 3 1 1 333 Machinery Q 2 * 334 Computer and Electronic Products * 1 1 335 Electrical Equip., Appliances, and Components 27 69...

  13. The Tate conjecture over finite fields (AIM talk) These are my notes for a talk at the The Tate Conjecture workshop at the American Institute

    E-Print Network [OSTI]

    Milne, Jim

    . For example, for a model X1 Pn over Fq, acts as .a1W a2W : : :/ 7! .a q 1W a q 2W : : :/W X1.F/ ! X1.F/; X1.F

  14. Search for pre-existing Delta states at BLAST from ²H(e,e'[Delta]??

    E-Print Network [OSTI]

    Greene Chana M. (Chana Michelle)

    2006-01-01T23:59:59.000Z

    At the MIT-Bates Linear Accelerator Center a comprehensive study of low-Q2 spin-dependent electron scattering from deuterium has been carried out using the Bates Large Acceptance Spectrometer Toroid (BLAST). This experiment ...

  15. Beam On Target! - CEBAF Accelerator Achieves 12 GeV Commissioning...

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

    Q2 and Measurements of the Electron-Helicity Dependent Cross Sections of Deeply Virtual Compton Scattering with CEBAF at 12 GeV) Both experiments will be run in Experimental Hall...

  16. EAClsnRLat

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

    432 8.3 21.2 8 Table V PAR Lattice Components for One-Fourth Machine* Element Drift Multipole Drift Quadrupole Ql Drift Magnet Drift Quadrupole Q2 Drift Multipole (sextupole, Sl)...

  17. Dish Sterling High Performance Thermal Storage

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

    Stirling High Performance Thermal Storage Sandia National Laboratories SNLAndrakaA: FY13Q2: Charles E. Andraka * 2-D PCM model extended to include realistic heat pipe boundary...

  18. WHEN A GOOD FIT IS NOT GOOD ENOUGH: A CASE STUDY ON THE FINAL RITARD*

    E-Print Network [OSTI]

    Amsterdam, University of

    -based models are also influenced by the temporal structure of the musical material that constraints possible for these models of physical motion is that constant braking force (q=2; see Figure 1b) or constant braking power

  19. Submitted to the XXXIst International Conference on High Energy Physics

    E-Print Network [OSTI]

    region which extends the kinematic range previously explored. The total # # p cross section above Q 2 = 1V. The high­resolution uranium­scintillator calorimeter (CAL) [9] consists of three parts: the forward (FCAL

  20. An assessment of stream flow and habitat quality for steelhead trout in San Pablo Creek, Contra Costa County

    E-Print Network [OSTI]

    Anderson, Shannah; Maldague, Lorraine

    2004-01-01T23:59:59.000Z

    conditions in lower hayfork creek. http://www.krisweb.com/Comparison of Peak Flow Values Creek Name Method U s e d ton i n g Equation Wildcat Creek Unit Runoff Index Q2=31.05cfs

  1. RADEMACHER CHAOS: TAIL ESTIMATES VS LIMIT RON BLEI AND SVANTE JANSON

    E-Print Network [OSTI]

    Janson, Svante

    RADEMACHER CHAOS: TAIL ESTIMATES VS LIMIT THEOREMS RON BLEI AND SVANTE JANSON Abstract. We study c(d) > 0 and every q 2, Date: May 29, 2002; revised May 26, 2003. 1 #12;2 RON BLEI AND SVANTE

  2. Halide and Oxy-halide Eutectic Systems for High Performance High...

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

    Q2 Halide and Oxy-Halide Eutectic Systems for High Performance High Temperature Heat Transfer Fluids Corrosion in Very High-Temperature Molten Salt for Next Generation CSP Systems...

  3. Fundamental Corrosion Studies in High-Temperature Molten Salt...

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

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

  4. Slightly revised for : Sciences de la socit, (61), 123-138, 2004 Des bonnes raisons d'chouer dans un projet technique : la

    E-Print Network [OSTI]

    Boyer, Edmond

    §"¡¥§!E1B")0(£m 2%§¡@¥§¡©¨rQ2%`"paca(¨Q1(#4§¡@¥§kF§29t$¡h§¡©V" !1#9!1&1'k(¨329"@¥§¡(¨¡BnS |W(uf"5}(@§f"¥§2

  5. Review of High Energy Diffraction in Real and Virtual Photon Proton scattering at HERA

    E-Print Network [OSTI]

    G. Wolf

    2009-07-07T23:59:59.000Z

    The electron-proton collider HERA at DESY opened the door for the study of diffraction in real and virtual photon-proton scattering at center-of-mass energies W up to 250 GeV and for large negative mass squared -Q^2 of the virtual photon up to Q^2 = 1600 GeV^2. At W = 220 GeV and Q^2 = 4 GeV^2, diffraction accounts for about 15% of the total virtual photon proton cross section decreasing to ~5% at Q^2 = 200 GeV^2. An overview of the results obtained by the experiments H1 and ZEUS on the production of neutral vectormesons and on inclusive diffraction up to the year 2008 is presented.

  6. Role of mesons in the electromagnetic form factors of the nucleon

    E-Print Network [OSTI]

    Akdogan, Taylan

    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 Q2 [Q superscript 2] ...

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

    E-Print Network [OSTI]

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

    2012-01-01T23:59:59.000Z

    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

  8. Postscript

    E-Print Network [OSTI]

    Dec 29, 2009 ... the credit load for the new instances, we also propose alternative objective func- ..... profile is depicted for each curriculum Q1, Q2, and Q3.

  9. UPLC-based metabonomic applications for discovering biomarkers of diseases in clinical chemistry

    E-Print Network [OSTI]

    Zhao, YY; Zhao, YY; Cheng, XL; Vaziri, ND; Liu, S; Lin, RC

    2015-01-01T23:59:59.000Z

    Mass spectrometry Elevated Energy (MS E ) technique was ?rstuses a normal low collision energy that provides for theQ2 has a high collision energy that fragments all of the

  10. MA 22300 EXAM 2 Form A INSTRUCTIONS 1. You must use a #2 ...

    E-Print Network [OSTI]

    2013-11-22T23:59:59.000Z

    production run, and the total cost of manufacturing q units is C (q)=0.1q2 + q + 400 dollars. ... with respect to time 1 hour after the production commences. A. 3.75.

  11. This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research

    E-Print Network [OSTI]

    Gent, Universiteit

    -perturbative hadronic, scattering part of Hard Exclusive Meson Production (HEMP) and Deeply Virtual Compton Scattering indication of the supported regions. with the DVCS and HEMP data, a Q2-evolution needs to be performed [17

  12. DESY 97158 ISSN 04189833 August 1997

    E-Print Network [OSTI]

    , D.P. Brown 23 , W. Br¨uckner 14 , P. Bruel 29 , D. Bruncko 18 , C. Brune 16 , J. B¨urger 11 , F.W. B¨usser 13 , A. Buniatian 4 , S. Burke 19 , G. Buschhorn 27 , D. Calvet 24 , A.J. Campbell 11 , T. Carli 27 of a differential structure function F D(3) 2 (x IP ; fi; Q 2 ) of the proton over the kinematic range 4:5 ! Q 2

  13. Extracting meson-baryon contributions to the electroexcitation of the N(1675)52- nucleon resonance

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

    Aznauryan, Inna G.; Burkert, Volker D.

    2015-07-01T23:59:59.000Z

    We report on the determination of the electrocouplings for the transition from the proton to the $N(1675){\\frac{5}{2}}^-$ resonance state using recent differential cross section data on $e p \\rightarrow e\\pi^+ n$ by the CLAS collaboration at $1.8 \\le Q^2 more »contributions at $Q^2 \\geq 1.8 $GeV$^2$ from the dynamical coupled-channel model.« less

  14. 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

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

    SciTech Connect (OSTI)

    S. Kulagin; W. Melnitchouk

    2007-10-03T23:59:59.000Z

    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.

  16. 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

  17. Diffraction: a different window on QCD and the proton structure

    E-Print Network [OSTI]

    ) M. Arneodo University of Eastern Piedmont, Novara, INFN Torino, Italy Wine & Cheese Seminar particles emerge intact or dissociated into low-mass states. Energy beam energy (within a few %) o by struck quark Q2/W2 W = photon-proton centre of mass energy y = W2/s F2=i[ei 2 x fi(x,Q2)] R=L/T DIS

  18. What can data provide for HLbL ? Fred Jegerlehner

    E-Print Network [OSTI]

    Röder, Beate

    polarization tensor µ(q1, q2, q3) = d4 x1 d4 x2 d4 x3 ei (q1x1+q2x2+q3x3) × 0 | T{ jµ(x1) j(x2) j(x3) j(0)} | 0 (0, s1, s2)­plane Two scale problem: "open regions" RLA ??? ??? pQCD One scale problem: "no problem

  19. Shifting Preferences and Time-Varying Parameters in Demand Analysis: A Monte Carlo Study

    E-Print Network [OSTI]

    Kanyama, Isaac Kalonda

    2011-05-31T23:59:59.000Z

    . Kalonda Onyx R. Kalonda iii Contents Acceptance Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Acknowledgements... of substitution between the two sub-utility aggregator functions is given by ?12 = 1 (1? ?+R) (2.5.4) where R = ?? A11A22 ? A212 (A11( q2 q1 )?? + A12)(A12 + A22( q2 q1 )?) (2.5.5) Since the sub-utility function q1 shares the same properties as the macrofunction U...

  20. DSE Perspective on QCD Modeling, Distribution Amplitudes, and Form Factors

    E-Print Network [OSTI]

    Peter C Tandy

    2014-07-02T23:59:59.000Z

    We describe results for the pion distribution amplitude (PDA) at the non-perturbative scale $\\mu=~$2GeV by projecting the Poincar\\'e-covariant Bethe-Salpeter wave-function onto the light-front and use it to investigate the ultraviolet behavior of the electromagnetic form factor, $F_\\pi(Q^2)$, on the entire domain of spacelike $Q^2$. The significant dilation of this PDA compared to the known asymptotic PDA is a signature of dynamical chiral symmetry breaking (DCSB) on the light front. We investigate the transition region of $Q^2$ where non-perturbative behavior of constituent-like quarks gives way to the partonic-like behavior of quantum chromodynamics (QCD). The non-perturbative approach is based on the Dyson-Schwinger equation (DSE) framework for continuum investigations in QCD. The leading-order, leading-twist perturbative QCD result for $Q^2 F_\\pi(Q^2)$ underestimates the new DSE computation by just 15\\% on $Q^2\\gtrsim 8\\,$GeV$^2$, in stark contrast with the result obtained using the asymptotic PDA.

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

    SciTech Connect (OSTI)

    Kazutaka Nakahara

    2006-05-01T23:59:59.000Z

    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.

  2. Self-Cleaning CSP Optics with EDS- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this Boston University project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  3. US LHC Accelerator Project FY2003 Q4 page 1 of 12 US LHC Accelerator Project

    E-Print Network [OSTI]

    Large Hadron Collider Program

    in quadrupole and dipole production, and in cable deliveries from CERN for testing. Based on an earned value Quarter FY 2003 15 December 2003 J. Strait, Project Manager I. Summary Good technical progress continues at Fermilab. We discussed our concerns directly with CERN management during a visit in September. Separately

  4. http://www.eh.doe.gov/nepa/process/ll/95q4.htm

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

    Amarillo, Texas High Explosive Waste Water Treatment Facility at LANL, Los Alamos, New Mexico Decontamination and Dismantlement of the Pinellas Plant, Pinellas, Florida...

  5. Baseload CSP Generation Integrated with Sulfur-Based Thermochemical Heat Storage- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this General Atomics project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  6. U.S. Residential Photovoltaic (PV) System Prices, Q4 2013 Benchmarks...

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

    TP-6A20-62671 October 2014 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for...

  7. FY 2014 Q4 Metrics Report 2014-11-06.xlsx

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan| Department of.pdf6-OPAMDepartment6 FY 2007 FYEnergyFossil

  8. Microsoft PowerPoint - SRS Headcount by County of Residence Q4 FY 2013.pptx

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverviewCleanup IntegrationAUpdateGA County SRNS SRR

  9. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles - FY12 Q4

    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 DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e p p a a r r t t mRecompressionBrayton|

  10. Minimally non-local nucleon-nucleon potentials with chiral two-pion exchange including Delta resonances

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

    Piarulli, M; Girlanda, L; Schiavilla, R; Perez, R Navarro; Amaro, J E; Arriola, E Ruiz

    2015-02-01T23:59:59.000Z

    We construct a coordinate-space chiral potential, including $\\Delta$-isobar intermediate states in its two-pion-exchange component up to order $Q^3$ ($Q$ denotes generically the low momentum scale).The contact interactions entering at next-to-leading and next-to-next-to-next-to-leading orders ($Q^2$ and $Q^4$, respectively) are rearranged by Fierz transformations to yield terms at most quadratic in the relative momentum operator of the two nucleons. The low-energy constant multiplying these contact interactions are fitted to the 2013 Granada database, consisting of 2309 $pp$ and 2982 $np$ data (including, respectively, 148 and 218 normalizations) in the laboratory-energy range 0--300 MeV. For the total 5291 $pp$ and $np$ data inmore »this range, we obtain a $\\chi^2$/datum of roughly 1.3 for a set of three models characterized by long- and short-range cutoffs, $R_{\\rm L}$ and $R_{\\rm S}$ respectively, ranging from $(R_{\\rm L},R_{\\rm S})=(1.2,0.8)$ fm down to $(0.8,0.6)$ fm. The long-range (short-range) cutoff regularizes the one- and two-pion exchange (contact) part of the potential.« less

  11. Minimally non-local nucleon-nucleon potentials with chiral two-pion exchange including Delta resonances

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

    Piarulli, M; Girlanda, L; Schiavilla, R; Perez, R Navarro; Amaro, J E; Arriola, E Ruiz

    2015-02-01T23:59:59.000Z

    We construct a coordinate-space chiral potential, including $\\Delta$-isobar intermediate states in its two-pion-exchange component up to order $Q^3$ ($Q$ denotes generically the low momentum scale).The contact interactions entering at next-to-leading and next-to-next-to-next-to-leading orders ($Q^2$ and $Q^4$, respectively) are rearranged by Fierz transformations to yield terms at most quadratic in the relative momentum operator of the two nucleons. The low-energy constant multiplying these contact interactions are fitted to the 2013 Granada database, consisting of 2309 $pp$ and 2982 $np$ data (including, respectively, 148 and 218 normalizations) in the laboratory-energy range 0--300 MeV. For the total 5291 $pp$ and $np$ data in this range, we obtain a $\\chi^2$/datum of roughly 1.3 for a set of three models characterized by long- and short-range cutoffs, $R_{\\rm L}$ and $R_{\\rm S}$ respectively, ranging from $(R_{\\rm L},R_{\\rm S})=(1.2,0.8)$ fm down to $(0.8,0.6)$ fm. The long-range (short-range) cutoff regularizes the one- and two-pion exchange (contact) part of the potential.

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

    E-Print Network [OSTI]

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

    2014-09-03T23:59:59.000Z

    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. A New Strategy for the Lattice Evaluation of the Leading Order Hadronic Contribution to $(g-2)_?$

    E-Print Network [OSTI]

    Maarten Golterman; Kim Maltman; Santiago Peris

    2014-05-10T23:59:59.000Z

    A reliable evaluation of the integral giving the hadronic vacuum polarization contribution to the muon anomalous magnetic moment should be possible using a simple trapezoid-rule integration of lattice data for the subtracted electromagnetic current polarization function in the Euclidean momentum interval $Q^2>Q^2_{min}$, coupled with an $N$-parameter Pad\\'e or other representation of the polarization in the interval $0well below the 1% level for $Q^2_{min}$ as low as 0.1 GeV$^2$ and rather small $N$. For such low $Q^2_{min}$, both an NNLO chiral representation with one additional NNNLO term and a low-order polynomial expansion employing a conformally transformed variable also provide representations sufficiently accurate to reach this precision for the low-$Q^2$ contribution. Combined with standard techniques for reducing other sources of error on the lattice determination, this hybrid strategy thus looks to provide a promising approach to reaching the goal of a sub-percent precision determination of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment on the lattice.

  14. Clean measurements of the nucleon axial-vector and free-neutron magnetic form factors

    E-Print Network [OSTI]

    Alexandre Deur

    2014-07-21T23:59:59.000Z

    We discuss the feasibility of a weak charged current experiment using a low energy electron beam. A first goal is to measure the Q^2 dependence of the axial-vector form factor g_a(Q^2). It can be measured model-independently and as robustly as for electromagnetic form factors from typical electron scattering experiments, in contrast to the methods used so far to measure g_a(Q^2). If g_a(Q^2) follows a dipole form, the axial mass can be extracted with a better accuracy than the world data altogether. The most important detection equipment would be a segmented neutron detector with good momentum and angular resolution that is symmetric about the beam direction, and covers a moderate angular range. A high intensity beam (100 uA) is necessary. Beam polarization is highly desirable as it provides a clean measurement of the backgrounds. Beam energies between 70 and 110 MeV are ideal. This range would provide a Q^2 mapping of g_a between 0.01

  15. Comparison of Nucleon Form Factors from Lattice QCD Against the Light Front Cloudy Bag Model and Extrapolation to the Physical Mass Regime

    E-Print Network [OSTI]

    Hrayr H. Matevosyan; Gerald A. Miller; Anthony W. Thomas

    2005-05-25T23:59:59.000Z

    We explore the possibility of extrapolating state of the art lattice QCD calculations of nucleon form factors to the physical regime. We find that the lattice results can be reproduced using the Light Front Cloudy Bag Model by letting its parameters be analytic functions of the quark mass. We then use the model to extend the lattice calculations to large values of Q^{2} of interest to current and planned experiments. These functions are also used to define extrapolations to the physical value of the pion mass, thereby allowing us to study how the predicted zero in G_{E}(Q^{2})/G_{M}(Q^{2}) varies as a function of quark mass.

  16. 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.

    2014-01-01T23:59:59.000Z

    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

  17. 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

    2012-06-05T23:59:59.000Z

    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.

  18. 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

    2014-06-01T23:59:59.000Z

    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.

  19. How to perform QCD analysis of DIS in Analytic Perturbation Theory

    E-Print Network [OSTI]

    Cesar Ayala; S. V. Mikhailov

    2015-03-02T23:59:59.000Z

    We apply (Fractional) Analytic Perturbation Theory (FAPT) to the QCD analysis of the nonsinglet nucleon structure function $F_2(x,Q^2)$ in deep inelastic scattering up to the next leading order and compare the results with ones obtained within the standard perturbation QCD. Based on a popular parameterization of the corresponding parton distribution we perform the analysis within the Jacobi Polynomial formalism and under the control of the numerical inverse Mellin transform. To reveal the main features of the FAPT two-loop approach, we consider a wide range of momentum transfer from high $Q^2\\sim 100 {\\rm GeV}^2$ to low $Q^2\\sim 0.3 {\\rm GeV}^2$ where the approach still works.

  20. Nucleon electromagnetic form factors from lattice QCD using a nearly physical pion mass

    E-Print Network [OSTI]

    J. R. Green; J. W. Negele; A. V. Pochinsky; S. N. Syritsyn; M. Engelhardt; S. Krieg

    2014-11-19T23:59:59.000Z

    We present lattice QCD calculations of nucleon electromagnetic form factors using pion masses $m_\\pi$ = 149, 202, and 254 MeV and an action with clover-improved Wilson quarks coupled to smeared gauge fields, as used by the Budapest-Marseille-Wuppertal collaboration. Particular attention is given to removal of the effects of excited state contamination by calculation at three source-sink separations and use of the summation and generalized pencil-of-function methods. The combination of calculation at the nearly physical mass $m_\\pi$ = 149 MeV in a large spatial volume ($m_\\pi L_s$ = 4.2) and removal of excited state effects yields agreement with experiment for the electric and magnetic form factors $G_E(Q^2)$ and $G_M(Q^2)$ up to $Q^2$ = 0.5 GeV$^2$.

  1. The longitudinal asymmetry of the (e,e'p) missing momentum distribution as a signal of color transparency

    E-Print Network [OSTI]

    Benhar, O; Nikolaev, N N; Speth, J; Usmani, A A; Zakharov, B G

    1995-01-01T23:59:59.000Z

    We use multiple scattering theory to evaluate the Q^{2} dependence of the forward-backward asymmetry, A_{z}, of the missing momentum distribution in quasielstic A(e,e'p) scattering, which is expected to be affected by color transparency. The novel features of our analysis are a consistent treatment of the structure of the ejectile state formed after absorption of the virtual photon by the struck proton and a careful evaluation of the background asymmetry induced by the nonvanishing real part of the proton-nucleon scattering amplitude. We find that the absolute magnitude of A_{z} is dominated by this background at the Q^{2}'s attainable at the Continuous Electron Beam Accelerator Facility. However, the Q^{2} dependence of the asymmetry is sensitive to the onset of color transparency, whose observation in high statistics experiments appears to be feasible, particularly using light targets such as ^{12}C or ^{16}O.

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

    SciTech Connect (OSTI)

    Jimenez-Delgado, Pedro [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Accardi, Alberto [Hampton University, Hampton, VA (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Melnitchouk, Wally [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

    2014-02-01T23:59:59.000Z

    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.

  3. The longitudinal asymmetry of the $(e,e'p)$ missing momentum distribution as a signal of color transparency

    E-Print Network [OSTI]

    O. Benhar; S. Fantoni; N. N. Nikolaev; J. Speth; A. A. Usmani; B. G. Zakharov

    1995-05-17T23:59:59.000Z

    We use multiple scattering theory to evaluate the $Q^{2}$ dependence of the forward-backward asymmetry, $A_{z}$, of the missing momentum distribution in quasielstic $A(e,e'p)$ scattering, which is expected to be affected by color transparency. The novel features of our analysis are a consistent treatment of the structure of the ejectile state formed after absorption of the virtual photon by the struck proton and a careful evaluation of the background asymmetry induced by the nonvanishing real part of the proton-nucleon scattering amplitude. We find that the absolute magnitude of $A_{z}$ is dominated by this background at the $Q^{2}$'s attainable at the Continuous Electron Beam Accelerator Facility. However, the $Q^{2}$ dependence of the asymmetry is sensitive to the onset of color transparency, whose observation in high statistics experiments appears to be feasible, particularly using light targets such as $^{12}C$ or $^{16}O$.

  4. Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton

    E-Print Network [OSTI]

    Airapetian, A; Akopov, Z; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetissian, A; Avetisyan, E; Belostotski, S; Bianchi, N; Blok, H P; Borissov, A; Bowles, J; Bryzgalov, V; Burns, J; Capiluppi, M; Capitani, G P; Cisbani, E; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; Deconinck, W; De Leo, R; De Nardo, L; De Sanctis, E; Diefenthaler, M; Di Nezza, P; Düren, M; Ehrenfried, M; Elbakian, G; Ellinghaus, F; Fantoni, A; Felawka, L; Frullani, S; Gabbert, D; Gapienko, G; Gapienko, V; Garibaldi, F; Gavrilov, G; Gharibyan, V; Giordano, F; Gliske, S; Golembiovskaya, M; Hadjidakis, C; Hartig, M; Hillenbrand, A; Hoek, M; Holler, Y; Hristova, I; Imazu, Y; Ivanilov, A; Jackson, H E; Jo, H S; Joosten, S; Kaiser, R; Karyan, G; Keri, T; Kinney, E; Kisselev, A; Korotkov, V; Kozlov, V; Kravchenko, P; Krivokhijine, V G; Lagamba, L; Lapikás, L; Lehmann, I; Lenisa, P; Ruiz, A López; Lorenzon, W; Ma, B -Q; Mahon, D; Makins, N C R; Manaenkov, S I; Manfré, L; Mao, Y; Marianski, B; de la Ossa, A Martinez; Marukyan, H; Miller, C A; Miyachi, Y; Movsisyan, A; Muccifora, V; Murray, M; Mussgiller, A; Nappi, E; Naryshkin, Y; Nass, A; Negodaev, M; Nowak, W -D; Pappalardo, L L; Perez-Benito, R; Petrosyan, A; Reimer, P E; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanftl, F; Schäfer, A; Schnell, G; Schüler, K P; Seitz, B; Shibata, T -A; Shutov, V; Stancari, M; Statera, M; Steffens, E; Steijger, J J M; Stewart, J; Stinzing, F; Taroian, S; Terkulov, A; Truty, R; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van Haarlem, Y; Van Hulse, C; Veretennikov, D; Vikhrov, V; Vilardi, I; Wang, S; Yaschenko, S; Ye, Z; Yen, S; Zagrebelnyy, V; Zeiler, D; Zihlmann, B; Zupranski, P

    2011-01-01T23:59:59.000Z

    A measurement of the virtual-photon asymmetry A_2(x,Q^2) and of the spin-structure function g_2(x,Q^2) of the proton are presented for the kinematic range 0.004 < x < 0.9 and 0.18 GeV^2 < Q^2 < 20 GeV^2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g_2(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x^2 moment of the twist-3 contribution to g_2(x) is found to be compatible with zero.

  5. Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton

    E-Print Network [OSTI]

    The HERMES Collaboration; A. Airapetian; N. Akopov; Z. Akopov; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetisyan; S. Belostotski; N. Bianchi; H. P. Blok; A. Borissov; J. Bowles; V. Bryzgalov; J. Burns; M. Capiluppi; G. P. Capitani; E. Cisbani; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; W. Deconinck; R. De Leo; L. De Nardo; E. De Sanctis; M. Diefenthaler; P. Di Nezza; M. Düren; M. Ehrenfried; G. Elbakian; F. Ellinghaus; A. Fantoni; L. Felawka; S. Frullani; D. Gabbert; G. Gapienko; V. Gapienko; F. Garibaldi; G. Gavrilov; V. Gharibyan; F. Giordano; S. Gliske; M. Golembiovskaya; C. Hadjidakis; M. Hartig; D. Hasch; A. Hillenbrand; M. Hoek; Y. Holler; I. Hristova; Y. Imazu; A. Ivanilov; H. E. Jackson; H. S. Jo; S. Joosten; R. Kaiser; G. Karyan; T. Keri; E. Kinney; A. Kisselev; V. Korotkov; V. Kozlov; P. Kravchenko; V. G. Krivokhijine; L. Lagamba; L. Lapikás; I. Lehmann; P. Lenisa; A. López Ruiz; W. Lorenzon; B. -Q. Ma; D. Mahon; N. C. R. Makins; S. I. Manaenkov; L. Manfré; Y. Mao; B. Marianski; A. Martinez de la Ossa; H. Marukyan; C. A. Miller; Y. Miyachi; A. Movsisyan; V. Muccifora; M. Murray; A. Mussgiller; E. Nappi; Y. Naryshkin; A. Nass; M. Negodaev; W. -D. Nowak; L. L. Pappalardo; R. Perez-Benito; A. Petrosyan; P. E. Reimer; A. R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; J. Rubin; D. Ryckbosch; Y. Salomatin; F. Sanftl; A. Schäfer; G. Schnell; K. P. Schüler; B. Seitz; T. -A. Shibata; V. Shutov; M. Stancari; M. Statera; E. Steffens; J. J. M. Steijger; J. Stewart; F. Stinzing; S. Taroian; A. Terkulov; R. Truty; A. Trzcinski; M. Tytgat; A. Vandenbroucke; Y. Van Haarlem; C. Van Hulse; D. Veretennikov; V. Vikhrov; I. Vilardi; S. Wang; S. Yaschenko; Z. Ye; S. Yen; V. Zagrebelnyy; D. Zeiler; B. Zihlmann; P. Zupranski

    2013-06-21T23:59:59.000Z

    A measurement of the virtual-photon asymmetry A_2(x,Q^2) and of the spin-structure function g_2(x,Q^2) of the proton are presented for the kinematic range 0.004 < x < 0.9 and 0.18 GeV^2 < Q^2 < 20 GeV^2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g_2(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x^2 moment of the twist-3 contribution to g_2(x) is found to be compatible with zero.

  6. Constraints on the Leading-Twist Pion Distribution Amplitude from A QCD Light-Cone Sum Rule with Chiral Current

    E-Print Network [OSTI]

    Xing-Gang Wu

    2008-08-07T23:59:59.000Z

    We present an improved analysis of the constraints on the first two Gegenbauer moments, $a^\\pi_2$ and $a^\\pi_4$, of the pion's leading-twist distribution amplitude from a QCD light-cone sum rule analysis of $B\\to\\pi$ weak transition form factor $f_{+}(q^2)$. Proper chiral current is adopted in QCD light-cone sum rule so as to eliminate the most uncertain twist-3 contributions to $f_{+}(q^2)$, and then we concentrate our attention on the properties of the leading-twist pion DA. A nearly model-independent $f_+(q^2)$ as shown in Ref.\\cite{pball0} that is based on the spectrum of $B\\to\\pi l\

  7. Magnetic moments of the ground-state $\\mathbf{J^P=(3/2)}^{+}$ baryon decuplet

    E-Print Network [OSTI]

    Milton Dean Slaughter

    2011-07-18T23:59:59.000Z

    The magnetic moment - a function of the electric charge form factor $F_{1}(q^{2})$ and the magnetic dipole form factor $F_{2}(q^{2})$ at zero four-momentum transfer $q^{2}$-of the ground-state $J^{P}=(3/2)^{+}$ baryon decuplet magnetic moments have been studied for many years with limited success. At present, only the magnetic moment of the $\\Omega^{-}$ has been accurately determined. We calculate nonperturbatively the magnetic moments of the \\emph{physical baryon decuplet $J^{P}=(3/2)^{+}$} members and in particular, we obtain $\\mu_{\\Delta^{++}}= (+3.67 \\pm 0.07) \\mu_{N}$, $\\mu_{\\Delta^{+}}= (+1.83 \\pm 0.04) \\mu_{N}$, $\\mu_{\\Delta^{0}}= (0) \\mu_{N}$, and the magnetic moments of their $U$-Spin partners in terms of $\\Omega^{-}$ magnetic moment data.

  8. A direct measurement of meson-baryon contributions to the electroexcitation of the $N(1675){\\frac{5}{2}}^-$ nucleon resonance

    E-Print Network [OSTI]

    I. G. Aznauryan; V. D. Burkert

    2014-12-03T23:59:59.000Z

    We report on the determination of the electrocouplings for the transition from the proton to the $N^+(1675){\\frac{5}{2}}^-$ resonance state using new differential cross section data on $e p \\rightarrow e\\pi^+ n$ by the CLAS collaboration at $1.8 \\le Q^2 process. The data have been analyzed using two different approaches, the unitary isobar model and fixed-t dispersion relations. The extracted $\\gamma^* p\\rightarrow N(1675){\\frac{5}{2}}^-$ helicity amplitudes show significant coupling through the $A^p_{1/2}$ amplitude for $Q^2 \\le 4$GeV$^2$, while $A^p_{3/2}$ drops much faster and at $Q^2 \\ge 1.8$GeV$^2$ is already much smaller than $A^p_{1/2}$. Both results are consistent with the meson-baryon contributions from the dynamical coupled-channel model.

  9. Capture Utility Savings Using Energy Management and Reporting Systems (EMRS)

    E-Print Network [OSTI]

    Robinson, James E.

    2012-01-01T23:59:59.000Z

    01 1 1 Q 20 11 2Q 2 01 1 3 Q 2 01 1 4 Q 2 0 11 To ta l To ta lL o st o p p o rt u ni ty C o st Quarterly Savings Performance Lost Opportunity 0 100 200 300 400 500 600 700 800 900 1,000 A F Q st... e am R B 5 O P T Q st e am R B 5 A F Q st e am R B 6 O P T Q st e am R B 6 A F Q st e a m P B 4 O P T Q st e a m P B 4 A F Q st e a m P B 6 O P T Q st e a m P B 6 A F Q st...

  10. $^8$He nuclei stopped in nuclear track emulsion

    E-Print Network [OSTI]

    D. A. Artemenkov; A. A. Bezbakh; V. Bradnova; M. S. Golovkov; A. V. Gorshkov; G. Kaminsky; N. K. Kornegrutsa; S. A. Krupko; K. Z. Mamatkulov; R. R. Kattabekov; V. V. Rusakova; R. S. Slepnev; R. Stanoeva; S. V. Stepantsov; A. S. Fomichev; V. Chudoba; P. I. Zarubin; I. G. Zarubina

    2014-10-20T23:59:59.000Z

    The fragment separator ACCULINNA in the G. N. Flerov Laboratory of Nuclear Reactions of JINR was used to expose a nuclear track emulsion to a beam of radioactive $^{8}$He nuclei of energy of 60 MeV and enrichment of about 80%. Measurements of decays of $^{8}$He nuclei stopped in the emulsion allow one to evaluate possibilities of $\\alpha$-spectrometry and to observe a thermal drift of $^{8}$He atoms in matter. Knowledge of the energy and emission angles of $\\alpha$-particles allows one to derive the energy distribution of $\\alpha$-decays Q$_{2\\alpha}$. The presence of a "tail" of large values Q$_{2\\alpha}$ is established. The physical reason for the appearance of this "tail" in the distribution Q$_{2\\alpha}$ is not clear. Its shape could allow one to verify calculations of spatial structure of nucleon ensembles emerging as $\\alpha$-pairs of decays via the state $^8$Be$_{2+}$.

  11. Conditional Reliability Modeling of Short-term River Basin Management

    E-Print Network [OSTI]

    Salazar, A.; Wurbs, R. A.

    2003-01-01T23:59:59.000Z

    , which are highly dependent on known current conditions of reservoir storage. 8 WRAP MODEL: Limitations 0 100 200 300 400 Jan-34 Jan-37 Jan-40 Jan-43 Jan-46 Jan-49 Jan-52 Jan-55 Jan-58 Jan-61 Jan-64 Jan-67 Jan-70 Jan-73 Jan-76 Jan-79 Jan-82 Jan-85 Jan... Q1 (Jan 1939) Q2 (Feb 1939) Q3 (Mar 1939) ? ? Qm (Dec 1939) Output 1 Simulation 2 Q1 (Jan 1940) Q2 (Feb 1940) Q3 (Mar 1940) ? ? Qm (Dec 1940) Output 2 Simulation n Q1 (Jan 2002) Q2 (Feb 2002) Q3 (Mar 2002) ? ? Qm (Dec 2002) Output n INITIAL CONDITION...

  12. Bose Einstein condensation in a gas of the Fibonacci oscillators

    E-Print Network [OSTI]

    Abdullah Algin

    2008-10-10T23:59:59.000Z

    We consider a system of the two-parameter deformed boson oscillators whose spectrum is given by a generalized Fibonacci sequence. In order to obtain the role of the deformation parameters (q1,q2) on the thermostatistics of the system, we calculate several thermostatistical functions in the thermodynamical limit and investigate the low-temperature behavior of the system. In this framework, we show that the thermostatistics of the (q1,q2)-bosons can be studied by the formalism of Fibonacci calculus which generalizes the recently proposed formalism of q-calculus. We also discuss the conditions under which the Bose-Einstein condensation would occur in the present two-parameter generalized boson gas. However, the ordinary boson gas results can be obtained by applying the limit q1=q2=1.

  13. Study of the Couplings of QED and QCD from the Adler Function

    E-Print Network [OSTI]

    Anthony Francis; Gregorio Herdoíza; Hanno Horch; Benjamin Jäger; Harvey B. Meyer; Hartmut Wittig

    2014-12-22T23:59:59.000Z

    The contribution from hadronic vacuum polarisation effects is responsible for a large fraction of the theoretical uncertainty in the running of the QED coupling. The current level of uncertainty has become a limitation for electroweak precision tests. We use lattice QCD simulations with two flavours of O$(a)$ improved Wilson fermions to determine the Adler function in a broad range of the momentum transfer $Q^2$. The running of the QED coupling, including valence contributions from $u$, $d$, $s$ and $c$ quarks, is compared to phenomenological results at intermediate $Q^2$ values. In the large $Q^2$ regime, the lattice determination of the Adler function is fitted to perturbation theory in order to examine the feasibility of a determination of the strong coupling constant.

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

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

    Cosyn, Wim [FL Intl U.; Melnitchouk, Wally [JLAB; Sargsian, Misak M. [JLAB

    2014-01-01T23:59:59.000Z

    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 and 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.

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

    E-Print Network [OSTI]

    K. Park; I. G. Aznauryan; V. D. Burkert; the CLAS collaboration

    2014-12-17T23:59:59.000Z

    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$^2$.

  16. 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.

    2015-04-01T23:59:59.000Z

    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$^2$.

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

    2015-04-01T23:59:59.000Z

    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

  18. /"2009 -Aio de Aoiricnaje a Ral SCALABRINIORTIZ"/ ,!! .e-.q<4: t.?!&NOTA SPU N" LI, t L ~ 6

    E-Print Network [OSTI]

    Maguitman, Ana Gabriela

    >; ?{ :, {':> f.., :;,! #12;BUENOS AIRES, 2 6 Mi$\\[ 2"jOg VISTO, lo disp~iestopor los aitículo.43 y 46 ii?ciso b

  19. Gluon polarisation from high transverse momentum hadron pairs production (COMPASS)

    E-Print Network [OSTI]

    L. Silva; for the COMPASS Collaboration

    2010-10-08T23:59:59.000Z

    A new preliminary result of a gluon polarisation \\Delta G/G obtained selecting high transverse momentum hadron pairs in DIS events with Q^2>1 (GeV/c)^2 is presented. Data has been collected by COMPASS at CERN during the 2002-2004 years. In the extraction of $\\Delta G/G$ contributions coming from the leading order $\\gamma q$ and QCD processes are taken into account. A new weighting method based on a neural network approach is used. Also a preliminary result of \\Delta G/G for events with Q^2<1 (GeV/c)^2 is presented.

  20. Deep inelastic cross-section measurements at large y with the ZEUS detector at HERA

    E-Print Network [OSTI]

    ZEUS Collaboration; H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R. Aggarwal; S. Antonelli; O. Arslan; V. Aushev; Y. Aushev; O. Bachynska; A. N. Barakbaev; N. Bartosik; O. Behnke; J. Behr; U. Behrens; A. Bertolin; S. Bhadra; I. Bloch; V. Bokhonov; E. G. Boos; K. Borras; I. Brock; R. Brugnera; A. Bruni; B. Brzozowska; P. J. Bussey; A. Caldwell; M. Capua; C. D. Catterall; J. Chwastowski; J. Ciborowski; R. Ciesielski; A. M. Cooper-Sarkar; M. Corradi; F. Corriveau; G. D'Agostini; R. K. Dementiev; R. C. E. Devenish; G. Dolinska; V. Drugakov; S. Dusini; J. Ferrando; J. Figiel; B. Foster; G. Gach; A. Garfagnini; A. Geiser; A. Gizhko; L. K. Gladilin; O. Gogota; Yu. A. Golubkov; J. Grebenyuk; I. Gregor; G. Grzelak; O. Gueta; M. Guzik; W. Hain; G. Hartner; D. Hochman; R. Hori; Z. A. Ibrahim; Y. Iga; M. Ishitsuka; A. Iudin; F. Januschek; I. Kadenko; S. Kananov; T. Kanno; U. Karshon; M. Kaur; P. Kaur; L. A. Khein; D. Kisielewska; R. Klanner; U. Klein; N. Kondrashova; O. Kononenko; Ie. Korol; I. A. Korzhavina; A. Kotanski; U. Kotz; N. Kovalchuk; H. Kowalski; O. Kuprash; M. Kuze; B. B. Levchenko; A. Levy; V. Libov; S. Limentani; M. Lisovyi; E. Lobodzinska; W. Lohmann; B. Lohr; E. Lohrmann; A. Longhin; D. Lontkovskyi; O. Yu. Lukina; J. Maeda; I. Makarenko; J. Malka; J. F. Martin; S. Mergelmeyer; F. Mohamad Idris; K. Mujkic; V. Myronenko; K. Nagano; A. Nigro; T. Nobe; D. Notz; R. J. Nowak; K. Olkiewicz; Yu. Onishchuk; E. Paul; W. Perlanski; H. Perrey; N. S. Pokrovskiy; A. S. Proskuryakov; M. Przybycien; A. Raval; P. Roloff; I. Rubinsky; M. Ruspa; V. Samojlov; D. H. Saxon; M. Schioppa; W. B. Schmidke; U. Schneekloth; T. Schorner-Sadenius; J. Schwartz; L. M. Shcheglova; R. Shevchenko; O. Shkola; I. Singh; I. O. Skillicorn; W. Slominski; V. Sola; A. Solano; A. Spiridonov; L. Stanco; N. Stefaniuk; A. Stern; T. P. Stewart; P. Stopa; J. Sztuk-Dambietz; D. Szuba; J. Szuba; E. Tassi; T. Temiraliev; K. Tokushuku; J. Tomaszewska; A. Trofymov; V. Trusov; T. Tsurugai; M. Turcato; O. Turkot; T. Tymieniecka; A. Verbytskyi; O. Viazlo; R. Walczak; W. A. T. Wan Abdullah; K. Wichmann; M. Wing; G. Wolf; S. Yamada; Y. Yamazaki; N. Zakharchuk; A. F. Zarnecki; L. Zawiejski; O. Zenaiev; B. O. Zhautykov; N. Zhmak; D. S. Zotkin

    2014-04-25T23:59:59.000Z

    The reduced cross sections for $e^{+}p$ deep inelastic scattering have been measured with the ZEUS detector at HERA at three different centre-of-mass energies, $318$, $251$ and $225$ GeV. The cross sections, measured double differentially in Bjorken $x$ and the virtuality, $Q^2$, were obtained in the region $0.13\\ \\leq\\ y\\ \\leq\\ 0.75$, where $y$ denotes the inelasticity and $5\\ \\leq\\ Q^2\\ \\leq\\ 110$ GeV$^2$. The proton structure functions $F_2$ and $F_L$ were extracted from the measured cross sections.

  1. IFT3355: Infographie Sujet 5: shading 2

    E-Print Network [OSTI]

    Montréal, Université de

    partir de l'objet · Cette visibilité est simplefiée: il faut seulement identifier si un objet bloque la cossin qq ii NMT 22 1 11 cossin sin )cos( qq q q i ii i N VN T Ti Ni(cosq1 cosq2)Vi1 Ti 1 2 (Ni cosq1 Vi1) Ni cosq2 1sin2 q2 12 sin2 q1 12 1cos2 q1 1q 2q 1sinq 2sinqM 1iV 1cosqiN 1 11

  2. 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

    2011-08-16T23:59:59.000Z

    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.

  3. Cross sections for hard exclusive electroproduction of pi+ mesons on a hydrogen target

    E-Print Network [OSTI]

    HERMES Collaboration; A. Airapetian

    2007-11-29T23:59:59.000Z

    The exclusive electroproduction of pi+ mesons was studied with the Hermes spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off an internal hydrogen gas target. The virtual-photon cross sections were measured as a function of the Mandelstam variable t and the squared four momentum -Q^2 of the exchanged virtual photon. A model calculation based on Generalized Parton Distributions is in fair agreement with the data at low values of |t| if power corrections are included. A model calculation based on the Regge formalism gives a good description of the magnitude and the t and Q^2 dependences of the cross section.

  4. Gravitino Dark Matter and the Flavour Structure of R-violating Operators.

    E-Print Network [OSTI]

    Bomark, N-E; Lola, S; Osland, P; Raklev, Are R

    the product of matrices of charged leptons and neutrinos, with the additional complication that, for the latter, we have the possibility of both Dirac and Majorana mass terms (the recent neutrino data indicate the existence of neutrino masses and contain... Q2U¯2H2 (???/M) or Q2U¯2H2 ( ??¯?/M ) where M is the heavy scale of the theory. One may generalise the above to non-abelian flavour symmetries, and, as an example, the following mass matrices have been proposed [25] : Mup ? ? ? 0 ?3 ?3 ?3 ?2 ?2 ?3 ?2...

  5. Shadowing in inelastic scattering of muons on carbon, calcium and lead at low x$_{Bj}$

    E-Print Network [OSTI]

    Adams, M R; Anthony, P L; Averill, D A; Baker, M D; Baller, B R; Banerjee, A; Bhatti, A A; Bratzler, U; Braun, H M; Breidung, H; Busza, W; Carroll, T J; Clark, H L; Conrad, J M; Davisson, R; Derado, I; Dhawan, S K; Dietrich, F S; Dougherty, W; Dreyer, T; Eckardt, V; Ecker, U; Erdmann, M; Fang, G Y; Figiel, J; Finlay, R W; Gebauer, H J; Geesaman, D F; Griffioen, K A; Guo, R S; Haas, J; Halliwell, C; Hantke, D; Hicks, K H; Hughes, V W; Jackson, H E; Jaffe, D E; Jancso, G; Jansen, D M; Jin, Z; Kaufman, S; Kennedy, R D; Kinney, E R; Kirk, T; Kobrak, H G E; Kotwal, A V; Kunori, S; Lord, J J; Lubatti, H J; McLeod, D; Madden, P; Magill, S; Manz, A; Melanson, H; Michael, D G; Montgomery, H E; Morfín, J G; Nickerson, R B; Novák, J; O'Day, S; Olkiewicz, K; Osborne, L; Otten, R; Papavassiliou, V; Pawlik, B; Pipkin, F M; Potterveld, D H; Ramberg, E J; Röser, A; Ryan, J J; Salgado, C W; Salvarani, A; Schellman, H; Schmitt, M; Schmitz, N; Schüler, K P; Siegert, G; Skuja, A; Snow, G A; Soldner, S; Rembold, U; Spentzouris, P; Stier, H E; Stopa, P; Swanson, R A; Venkataramania, H; Wilhelm, M; Wilson, R; Wittek, W; Wolbers, S A; Zghiche, A; Zhao, T

    1995-01-01T23:59:59.000Z

    Nuclear shadowing is observed in the per-nucleon cross-sections of positive muons on carbon, calcium and lead as compared to deuterium. The data were taken by Fermilab experiment E665 using inelastically scattered muons of mean incident momentum 470 GeV/c. Cross-section ratios are presented in the kinematic region 0.0001 < XBj <0.56 and 0.1 < Q**2 < 80 GeVc. The data are consistent with no significant nu or Q**2 dependence at fixed XBj. As XBj decreases, the size of the shadowing effect, as well as its A dependence, are found to approach the corresponding measurements in photoproduction.

  6. Shadowing in Inelastic Scattering of Muons on Carbon, Calcium and Lead at Low XBj

    E-Print Network [OSTI]

    Fermilab E665 Collaboration

    1995-05-10T23:59:59.000Z

    Nuclear shadowing is observed in the per-nucleon cross-sections of positive muons on carbon, calcium and lead as compared to deuterium. The data were taken by Fermilab experiment E665 using inelastically scattered muons of mean incident momentum 470 GeV/c. Cross-section ratios are presented in the kinematic region 0.0001 < XBj <0.56 and 0.1 < Q**2 < 80 GeVc. The data are consistent with no significant nu or Q**2 dependence at fixed XBj. As XBj decreases, the size of the shadowing effect, as well as its A dependence, are found to approach the corresponding measurements in photoproduction.

  7. Cross sections for hard exclusive electroproduction of $\\pi^{+}$ mesons on a hydrogen target

    E-Print Network [OSTI]

    Airapetian, A; Akopov, Z; Aschenauer, E C; Augustyniak, W; Avetisian, A; Avetissian, E; Barion, L; Belostotskii, S; Bianchi, N; Blok, H P; Böttcher, H; Bonomo, C; Borisov, A; Bryzgalov, V; Burns, J; Capiluppi, M; Capitani, G P; Cisbani, E; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; Deconinck, W; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Diefenthaler, M; Di Nezza, P; Dreschler, J; Düren, M; Ehrenfried, M; Elbakian, G; Ellinghaus, F; Fabbri, R; Fantoni, A; Frullani, S; Gabbert, D; Gapienko, G; Gapienko, V; Garibaldi, F; Gavrilov, G; Karibian, V; Giordano, F; Gliske, S; Guler, H; Hadjidakis, C; Hasch, D; Hill, G; Hillenbrand, A; Hoek, M; Hristova, I; Imazu, Y; Ivanilov, A; Jackson, H E; Joosten, S; Kaiser, R; Keri, T; Kinney, E; Kiselev, A; Kopytin, M; Korotkov, V; Kravchenko, P; Krivokhizhin, V G; Lagamba, L; Lamb, R; Lapikas, L; Lehmann, I; Lenisa, P; Linden-Levy, L A; Lopez Ruiz, A; Lorenzon, W; Lu, S; Lü, X; Mahon, D; Makins, N C R; Marianski, B; Marukyan, H; Miller, C A; Miyachi, Y; Muccifora, V; Murray, M; Mussgiller, A; Nappi, E; Naryshkin, Yu; Nass, A; Negodaev, M; Nowak, W D; Pappalardo, L L; Perez-Benito, R; Pickert, N; Raithel, M; Reimer, P E; Reolon, A R; Riedl, C; Rith, K; Rock, S E; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Schäfer, A; Schnell, G; Schüler, K P; Seitz, B; Shearer, C; Shibata, T A; Shutov, V; Stancari, M; Statera, M; Steijger, J J M; Stenzel, H; Stewart, J; Stinzing, F; Streit, J; Taroian, S; Thomas, E; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van der Nat, P B; van der Steenhoven, G; Van Haarlem, Y; Van Hulse, C; Varanda, M; Veretennikov, D; Vikhrov, V; Vilardi, I; Vogel, C; Wang, S; Yaschenko, S; Ye, H; Ye, Z; Yen, S; Yu, W; Zeiler, D; Zihlmann, B; Zupranski, P

    2008-01-01T23:59:59.000Z

    The exclusive electroproduction of pi+ mesons was studied with the Hermes spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off an internal hydrogen gas target. The virtual-photon cross sections were measured as a function of the Mandelstam variable t and the squared four momentum -Q^2 of the exchanged virtual photon. A model calculation based on Generalized Parton Distributions is in fair agreement with the data at low values of |t| if power corrections are included. A model calculation based on the Regge formalism gives a good description of the magnitude and the t and Q^2 dependences of the cross section.

  8. Measurement of the Running of the Electromagnetic Coupling at LEP

    E-Print Network [OSTI]

    Salvatore Mele

    2006-01-30T23:59:59.000Z

    The study of low-angle and large-angle Bhabha scattering at LEP gives access to the running of the electromagnetic coupling. Two recent measurements of the OPAL and L3 collaborations probe the running of alpha in the regions 1.8GeV^2<-Q^2<6.1GeV^2 and 1800GeV^2 <-Q^2 <21600GeV^2, respectively. The strategies and the results of these studies are presented. A global overview is given of the agreement of these and previous L3 findings with the QED predictions.

  9. The Running coupling BFKL anomalous dimensions and splitting functions.

    E-Print Network [OSTI]

    Thorne, Robert S

    2 2 + 30.72?¯50? ) . (2.36) 14 This contribution to the splitting function for t = 6 and is shown in fig. 6.a. Note that because of the truncation of GE(N, t), beyond 6th order the expression for PLOgg (?, ?s(Q2)) is not what one would really get... .K. Abstract I explicitly calculate the anomalous dimensions and splitting functions governing the Q2 evolu- tion of the parton densities and structure functions which result from the running coupling BFKL equation at LO, i.e. I perform a resummation in powers...

  10. Heavy Truck Engine Program

    SciTech Connect (OSTI)

    Nelson, Christopher

    2009-01-08T23:59:59.000Z

    The Heavy Duty Truck Engine Program at Cummins embodied three significant development phases. All phases of work strove to demonstrate a high level of diesel engine efficiency in the face of increasingly stringent emission requirements. Concurrently, aftertreatment system development and refinement was pursued in support of these efficiency demonstrations. The program's first phase focused on the demonstration in-vehicle of a high level of heavy duty diesel engine efficiency (45% Brake Thermal Efficiency) at a typical cruise condition while achieving composite emissions results which met the 2004 U.S. EPA legislated standards. With a combination of engine combustion calibration tuning and the development and application of Urea-based SCR and particulate aftertreatment, these demonstrations were successfully performed by Q4 of 2002. The second phase of the program directed efforts towards an in-vehicle demonstration of an engine system capable of meeting 2007 U.S. EPA legislated emissions requirements while achieving 45% Brake Thermal Efficiency at cruise conditions. Through further combustion optimization, the refinement of Cummins Cooled EGR architecture, the application of a high pressure common rail fuel system and the incorporation of optimized engine parasitics, Cummins Inc. successfully demonstrated these deliverables in Q2 of 2004. The program's final phase set a stretch goal of demonstrating 50% Brake Thermal Efficiency from a heavy duty diesel engine system capable of meeting 2010 U.S. EPA legislated emissions requirements. Cummins chose to pursue this goal through further combustion development and refinement of the Cooled EGR system architecture and also applied a Rankine cycle Waste Heat Recovery technique to convert otherwise wasted thermal energy to useful power. The engine and heat recovery system was demonstrated to achieve 50% Brake Thermal Efficiency while operating at a torque peak condition in second quarter, 2006. The 50% efficient engine system was capable of meeting 2010 emissions requirements through the application of NOx and particulate matter reduction techniques proven earlier in the program.

  11. The deBroglie-Bohr Model for the Hydrogen Atom = de Broglie's hypothesis that

    E-Print Network [OSTI]

    Rioux, Frank

    , so is kinetic energy. E T V+= n 2 h 2 8 2 me r 2 Z q 2 4 r -= Which means that total energy. This expression is subtituted back in the energy expression below to find the optimum energy. r n 2 h 2 8 2 me

  12. The modification of a radio frequency Cockcroft Walton generator

    E-Print Network [OSTI]

    Holt, Joseph Marion

    1954-01-01T23:59:59.000Z

    iepedanee of the line Ee ia /ja$C', linea the line ia open at the Nth loop~ ZM ia of~ by p, ) 28'4 ~(Alf) ' ' & &2 ~ ~ (6I N (~y) g bC ~ (6) 5N solviag %his emyrlsmfea ter aha ratio ( ? } @islay ( + ) ~ FF0% PifQ$% (2) y ib San bo assn tha, The en...

  13. Geodesic Finite Elements of Higher Order Oliver Sander

    E-Print Network [OSTI]

    conditions. As a side product we can define geodesic finite elements for non-simplex reference elements of a simplex by the weighted average (v1, . . . , dd+1; w) := arg min qM d+1 i=1 wi dist(vi, q)2 , (1) where w are barycentric coordinates on the simplex. Based on this formula a finite element theory could be constructed

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

    E-Print Network [OSTI]

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

    1994-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Duan ChunGui; Li GuangLie; Shen PengNian

    2006-04-18T23:59:59.000Z

    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.

  16. Collective perspective on advances in Dyson-Schwinger Equation QCD

    E-Print Network [OSTI]

    Adnan Bashir; Lei Chang; Ian C. Cloet; Bruno El-Bennich; Yu-xin Liu; Craig D. Roberts; Peter C. Tandy

    2012-01-16T23:59:59.000Z

    We survey contemporary studies of hadrons and strongly interacting quarks using QCD's Dyson-Schwinger equations, addressing: aspects of confinement and dynamical chiral symmetry breaking; the hadron spectrum; hadron elastic and transition form factors, from small- to large-Q^2; parton distribution functions; the physics of hadrons containing one or more heavy quarks; and properties of the quark gluon plasma.

  17. Nonlinear interaction of compressional waves in a 2D dusty plasma crystal

    E-Print Network [OSTI]

    Goree, John

    sound waves is dispersionless [4,9,10], with a speed CL = /k given in Ref. [9]. Here, 2 0 = Q2 /4 0ma3 monolayers [1], electrons on the surface of liquid helium [2], rare gas atoms ab- sorbed on graphite [3 a screened Coulomb repulsion or Yukawa potential. Sound waves, or phonons, in a 2D Yukawa lattice are well

  18. Proton and deuteron F[subscript 2] structure function at low Q[superscript 2

    E-Print Network [OSTI]

    Tvaskis, V.

    Measurements of the proton and deuteron F2 structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range 0.06<Q2<2.8?GeV2 and Bjorken x values from 0.009 to 0.45, thus ...

  19. Universitt Stuttgart Mehrfeldprobleme in der

    E-Print Network [OSTI]

    Knees, Dorothee

    behaviour. Examples for such materials are stainless steel alloys or aluminium alloys. The particular model of aluminium alloys. Let Rd, d 2, be a bounded domain, u : Rd the displacement field, (u) = 1 2 ( u + u.45 - 7.9 for steel alloys [41] up to 20 - 45 for aluminium alloys [47, 34] we assume that q 2

  20. New JLab/Hall A Deeply Virtual Compton Scattering results

    E-Print Network [OSTI]

    Defurne, Maxime

    2015-01-01T23:59:59.000Z

    New data points for unpolarized Deeply Virtual Compton Scattering cross sections have been extracted from the E00-110 experiment at Q$^2$=1.9 GeV$^2$ effectively doubling the statistics available in the valence region. A careful study of systematic uncertainties has been performed.

  1. Least Squares Approximation by Real Normal Matrices with Specified Spectrum

    E-Print Network [OSTI]

    This work was supported in part by the Applied Mathematical Sciences sub­ program of the Office of Energy onto the the feasible set O(n) := fQ 2 R n\\Thetan jQ T Q = Ig. This formula gives rise

  2. Some histological manifestations in the vitamin B b12 sdeficient newborn rat

    E-Print Network [OSTI]

    Jones, Carroll Christian

    1954-01-01T23:59:59.000Z

    &dna;, . and spieen 1n duced by a materw?l v1tamin Rl? deficiency 1? the ?suborn albino rat, 4 secondary porno a Ips to co"lpga e the '?Jot'. , +t dif faro loca bot'i&en the hearts, livorn and '. . Tdnevs of novborn offspring oi' v'to oin Q2 deficient mothers...

  3. Bounds on the k-dimension of Products of Special Posets

    E-Print Network [OSTI]

    Baym, Michael Hartmann

    Trotter conjectured that dimP×Q?dimP+dimQ?2 for all posets P and Q. To shed light on this, we study the k-dimension of products of finite orders. For k???o(ln n), the value 2dimk(P)?dimk(P×P) is unbounded when P is an ...

  4. Carles Batlle Arnau Activitat docent 1999/2004

    E-Print Network [OSTI]

    Batlle, Carles

    /04 .................................................................................................................... 8 2 #12;Publicacions docents en el període Llibres C. Batlle, I. Massana, M. Zaragozá Algebra i://anduril.epsevg.upc.es/~carles/ioc17013 C. Batlle Introducció a la Geometria dels Sistemas No Lineals (2004). http DIFERENCIAL 2, Q2, P Crèdits 3 Escola Politècnica Superior d'Enginyeria de Vilanova i la Geltrú 14626 ALGEBRA

  5. --No Title--

    Gasoline and Diesel Fuel Update (EIA)

    Rubber ... 511 259 145 68 34 4 14,730 4,041 3,241 2,193 3,650 1,605 Slate or Tile ... 263 144 70 38 11 Q 2,462 793 642 605 385...

  6. Simplified Models of the Synchronous Machine Below is a summary of the different models that we will discuss

    E-Print Network [OSTI]

    McCalley, James D.

    that these numbers do not include the stator windings (d, q). You can get the number of electrical states from these numbers according to: E=d+q+2-N where "2" is for the d and q winding states and N is the number (1.1): Machine with solid round rotor. (See page 127) (No D or Q-axis damper windings

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

    E-Print Network [OSTI]

    Zhan, Xiaohui

    2010-01-01T23:59:59.000Z

    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, ...

  8. NOTES AND DISCUSSIONS Note on thermal heating efficiency

    E-Print Network [OSTI]

    Rodriguez, Carlos

    ; but there is a dual theorem about the maximum efficiency with which heat at one temperature can be converted into heat part of the world's energy resources are actually used for heating rather than production of work if the engine is reversible. In the latter case the ``wasted energy'' Q1 Carnot Q2 T1 T2 2 is delivered as heat

  9. THEORETICAL STUDY ON SOME -LACTAMS AS SUBSTRATES OF THE BACTERIAL MULTIDRUG RESISTANCE ACRB PUMP

    E-Print Network [OSTI]

    Ferreira, Márcia M. C.

    THEORETICAL STUDY ON SOME -LACTAMS AS SUBSTRATES OF THE BACTERIAL MULTIDRUG RESISTANCE ACRB PUMPB pump is a part of the most important multidrug efflux system of gram-negative bacteria, which excretes recognition site (PRS) of the AcrB pump was also performed. Parsimonius PLS models were obtained (Q2 > 0.67, R

  10. 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.

    2010-10-01T23:59:59.000Z

    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

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

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

    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...

  12. Q1: What is the fundamental difference between a Gaussian mixture model (GMM) and k-means?

    E-Print Network [OSTI]

    Spang, Rainer

    ) and k-means? Q2: Keeping the previous question in mind design a dataset that you can cluster correctly using a GMM but not using k-means (3 clusters). Q3: Implement the EM algorithm in R and perform the clustering of your dataset with a GMM. Also cluster the dataset using k-means. Visualize the results. If you

  13. 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

  14. Test of QED to fourth order by study of four-lepton final states in e(+)e(?) interactions at 29 GeV with the HRS detector

    E-Print Network [OSTI]

    Baringer, Philip S.

    1990-10-01T23:59:59.000Z

    Data taken with the High Resolution Spectrometer detector at the SLAC storage ring PEP were used to test QED to fourth order in the coupling constant ?. The experiment studied four-lepton final states produced at high Q(2) in e(+)e(?) interactions...

  15. Study of quasielastic scattering using charged-current nu_mu-iron interactions in the MINOS Near Detector

    E-Print Network [OSTI]

    P. Adamson; I. Anghel; A. Aurisano; G. Barr; M. Bishai; A. Blake; G. J. Bock; D. Bogert; S. V. Cao; C. M. Castromonte; S. Childress; J. A. B. Coelho; L. Corwin; D. Cronin-Hennessy; J. K. de Jong; A. V. Devan; N. E. Devenish; M. V. Diwan; C. O. Escobar; J. J. Evans; E. Falk; G. J. Feldman; M. V. Frohne; H. R. Gallagher; R. A. Gomes; M. C. Goodman; P. Gouffon; N. Graf; R. Gran; K. Grzelak; A. Habig; S. R. Hahn; J. Hartnell; R. Hatcher; A. Holin; J. Huang; J. Hylen; G. M. Irwin; Z. Isvan; C. James; D. Jensen; T. Kafka; S. M. S. Kasahara; G. Koizumi; M. Kordosky; A. Kreymer; K. Lang; J. Ling; P. J. Litchfield; P. Lucas; W. A. Mann; M. L. Marshak; N. Mayer; C. McGivern; M. M. Medeiros; R. Mehdiyev; J. R. Meier; M. D. Messier; W. H. Miller; S. R. Mishra; S. Moed Sher; C. D. Moore; L. Mualem; J. Musser; D. Naples; J. K. Nelson; H. B. Newman; R. J. Nichol; J. A. Nowak; J. O Connor; M. Orchanian; R. B. Pahlka; J. Paley; R. B. Patterson; G. Pawloski; A. Perch; M. Pfutzner; S. Phan-Budd; R. K. Plunkett; N. Poonthottathil; X. Qiu; A. Radovic; B. Rebel; C. Rosenfeld; H. A. Rubin; M. C. Sanchez; J. Schneps; A. Schreckenberger; P. Schreiner; R. Sharma; A. Sousa; N. Tagg; R. L. Talaga; J. Thomas; M. A. Thomson; X. Tian; A. Timmons; S. C. Tognini; R. Toner; D. Torretta; J. Urheim; P. Vahle; B. Viren; J. J. Walding; A. Weber; R. C. Webb; C. White; L. Whitehead; L. H. Whitehead; S. G. Wojcicki; R. Zwaska

    2014-12-28T23:59:59.000Z

    Kinematic distributions from an inclusive sample of 1.41 x 10^6 charged-current nu_mu interactions on iron, obtained using the MINOS Near Detector exposed to a wide-band beam with peak flux at 3 GeV, are compared to a conventional treatment of neutrino scattering within a Fermi gas nucleus. Results are used to guide the selection of a subsample enriched in quasielastic nu_mu Fe interactions, containing an estimated 123,000 quasielastic events of incident energies 1 = 2.79 GeV. Four additional subsamples representing topological and kinematic sideband regions to quasielastic scattering are also selected for the purpose of evaluating backgrounds. Comparisons using subsample distributions in four-momentum transfer Q^2 show the Monte Carlo model to be inadequate at low Q^2. Its shortcomings are remedied via inclusion of a Q^2-dependent suppression function for baryon resonance production, developed from the data. A chi-square fit of the resulting Monte Carlo simulation to the shape of the Q^2 distribution for the quasielastic-enriched sample is carried out with the axial-vector mass M_A of the dipole axial-vector form factor of the neutron as a free parameter. The effective M_A which best describes the data is 1.23 +0.13/-0.09 (fit) +0.12/-0.15 (syst.) GeV.

  16. Total Space Heating Water Heating Cook-

    Gasoline and Diesel Fuel Update (EIA)

    Q Q Q Q Q Q Q Q Q Q Food Service ... Q Q Q Q Q Q Q Q Q Q Health Care ... 11 6 2 Q 2 5.6 3.3 0.8 Q 1.3 Inpatient...

  17. 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

  18. Longitudinal Target-Spin Azimuthal Asymmetry in Deeply-Virtual Compton

    E-Print Network [OSTI]

    to as the longitudinal target-spin asymmetry (LTSA), gives access mainly to the polarized GPD H. The kinematic de- pendences of the LTSA on t, xB and Q2 are measured and compared with the corresponding measurements: DVCS, LTSA, azimuthal, HELIX #12;Zusammenfassung Als eine Verallgemeinerung der gewöhnlichen

  19. 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

    2014-06-16T23:59:59.000Z

    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.

  20. 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

  1. Precise measurement of the neutron magnetic form factor GMn [G superscript n subscript M] in the Few-GeV2 [V superscript 2] region

    E-Print Network [OSTI]

    Rowntree, D.

    The neutron elastic magnetic form factor was extracted from quasielastic electron scattering on deuterium over the range Q2=1.0–4.8 [Q superscript 2 = 1.0-4.8] ??GeV2 [Ge V superscript 2] with the CLAS detector at Jefferson ...

  2. Recent CLEO Charm Meson and Baryon Results Jim Napolitano (RPI & Cornell)

    E-Print Network [OSTI]

    CsI 2cm BP Silicon 3.5cm BP He-propane Microbeta 7 Bunches 1 IR Crossing Angle 9X3 Bunches 2230902 is significant! 9 #12;D0 -e+e Normalized q2 Distribution Preliminary! Paper will be submitted shortly. Form

  3. 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

  4. Deep Inelastic Scattering of Polarized Electrons by Polarized $^3$He and the Study of the Neutron Spin Structure

    E-Print Network [OSTI]

    The E142 Collaboration; P. L. Anthony et al

    1996-10-14T23:59:59.000Z

    The neutron longitudinal and transverse asymmetries $A^n_1$ and $A^n_2$ have been extracted from deep inelastic scattering of polarized electrons by a polarized $^3$He target at incident energies of 19.42, 22.66 and 25.51 GeV. The measurement allows for the determination of the neutron spin structure functions $g^n_1 (x,Q^2)$ and $g^n_2(x,Q^2)$ over the range $0.03 neutron spin structure function $g^n_1 (x,Q^2)$ is small and negative within the range of our measurement, yielding an integral ${\\int_{0.03}^{0.6} g_1^n(x) dx}= -0.028 \\pm 0.006 (stat) \\pm 0.006 (syst) $. Assuming Regge behavior at low $x$, we extract $\\Gamma_1^n=\\int^1_0 g^n_1(x)dx = -0.031 \\pm 0.006 (stat)\\pm 0.009 (syst) $. Combined with previous proton integral results from SLAC experiment E143, we find $\\Gamma_1^p - \\Gamma_1^n = 0.160 \\pm 0.015$ in agreement with the Bjorken sum rule prediction $\\Gamma^p_1 - \\Gamma ^n_1 = 0.176 \\pm 0.008$ at a $Q^2$ value of 3 (GeV$/c)^2$ evaluated using $\\alpha_s = 0.32\\pm 0.05$.

  5. Working Group 2 `Hard VM', April 48, 1998,

    E-Print Network [OSTI]

    /95(preliminary) ZEUS 94 Fixed Target GRV Ryskin MRSA lq Ryskin CTEQ 4lq Ryskin MRSG Ryskin ¯ xg(¯ x; ¯ q 2 ) ¯ x, MRSA and CTEQ parametrizations as extracted from F 2 ffl Only the shape prediction is reliable due

  6. Precise determination of the spin structure function $\\mathbf{g_1}$ of the proton, deuteron and neutron

    E-Print Network [OSTI]

    Airapetian, A; Akopov, Z; Andrus, A; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetisian, A; Avetissian, E; Belostotskii, S; Bianchi, N; Blok, H P; Böttcher, H; Borisov, A; Borysenko, A; Brüll, A; Bryzgalov, V; Capiluppi, M; Capitani, G P; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; Deconinck, W; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Devitsin, E; Diefenthaler, M; Di Nezza, P; Dreschler, J; Düren, M; Ehrenfried, M; Elalaoui-Moulay, A; Elbakian, G; Ellinghaus, F; Elschenbroich, U; Fabbri, R; Fantoni, A; Felawka, L; Frullani, S; Funel, A; Gabbert, D; Gärber, Y; Gapienko, G; Gapienko, V; Garibaldi, F; Garrow, K; Gavrilov, G; Karibian, V; Giordano, F; Grebenyuk, O; Gregor, I M; Guler, H; Gute, A; Hadjidakis, C; Hartig, M; Hasch, D; Hasegawa, T; Hesselink, W H A; Hillenbrand, A; Hoek, M; Holler, Y; Hommez, B; Hristova, I; Iarygin, G; Ivanilov, A; Izotov, A; Jackson, H E; Jgoun, A; Kaiser, R; Keri, T; Kinney, E; Kiselev, A; Kobayashi, T; Kopytin, M; Korotkov, V; Kozlov, V; Krauss, B; Kravchenko, P; Krivokhizhin, V G; Lagamba, L; Lapikas, L; Lenisa, P; Liebing, P; Linden-Levy, L A; Lorenzon, W; Lü, J; Lu, S; Ma, B Q; Maiheu, B; Makins, N C R; Mao, Y; Marianski, B; Marukyan, H; Masoli, F; Mexner, V; Meyners, N; Michler, T; Miklukho, O; Miller, C A; Miyachi, Y; Muccifora, V; Murray, M; Nagaitsev, A; Nappi, E; Naryshkin, Yu; Negodaev, M; Nowak, Wolf-Dieter; Ohsuga, H; Osborne, A; Perez-Benito, R; Pickert, N; Raithel, M; Reggiani, D; Reimer, P E; Reischl, A; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanjiev, I; Savin, I; Schäfer, A; Schnell, G; Schüler, K P; Seele, J; Seitz, B; Shearer, C; Shibata, T A; Shutov, V; Sinram, K; Stancari, M; Statera, M; Steffens, E; Steijger, J J M; Stenzel, H; Stewart, J; Stinzing, F; Stösslein, U; Streit, J; Tait, P; Tanaka, H; Taroian, S P; Tchuiko, B; Terkulov, A R; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van der Nat, P B; van der Steenhoven, G; Van Haarlem, Y; Veretennikov, D; Vikhrov, V; Vogel, C; Wang, S; Weiskopf, C; Ye, Y; Ye, Z; Yen, S; Zihlmann, B; Zupranski, P

    2006-01-01T23:59:59.000Z

    Precise measurements of the spin structure functions of the proton $g_1^p(x,Q^2)$ and deuteron $g_1^d(x,Q^2)$ are presented over the kinematic range $0.0041 \\leq x \\leq 0.9$ and $0.18 $ GeV$^2$ $\\leq Q^2 \\leq 20$ GeV$^2$. The data were collected at the HERMES experiment at DESY, in deep-inelastic scattering of 27.6 GeV longitudinally polarized positrons off longitudinally polarized hydrogen and deuterium gas targets internal to the HERA storage ring. The neutron spin structure function $g_1^n$ is extracted by combining proton and deuteron data. The integrals of $g_1^{p,d}$ at $Q^2=5$ GeV$^2$ are evaluated over the measured $x$ range. Neglecting any possible contribution to the $g_1^d$ integral from the region $x \\leq 0.021$, a value of $0.330 \\pm 0.011\\mathrm{(theo.)}\\pm0.025\\mathrm{(exp.)}\\pm 0.028$(evol.) is obtained for the flavor-singlet axial charge $a_0$ in a leading-twist NNLO analysis.

  7. 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 = V) · Stress Migration (SM) · Quadratic temperature dependence · Thermal Cycling (TC) 8 #12;Brian Greskamp

  8. C/N0 Estimation for Modernized GNSS Signals: Theoretical Bounds and a Novel Iterative

    E-Print Network [OSTI]

    Calgary, University of

    outputs as WBPm ¼ XK¼20 k¼1 I2 k þ Q2 k � Á ! m : (2) The ratio NPm is computed as NPm ¼ NBPm WBPm : (3) The mean of this ratio (lNP) is evaluated as lNP ¼ 1 M XM m¼1 NPm (4)NAVIGATION: Journal of The Institute

  9. 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

  10. Statistics by Simulation from SecondOrder Models for Responses of Floating Structures

    E-Print Network [OSTI]

    Sweetman, Bert

    are efficiently produced via Fast Fourier Transform (FFT) summation of N unique, sinusoidal components (Shinozuka­sided power spectral density S j (! j ) as a j = q 2S j (! j ) \\Delta!. Simulating realizations in this manner the Gaus­ sian only by virtue of the summation of many independently phased components. At this point we

  11. OIKOS O15875 Hall, S. R., Shurin, J. B., Diehl, S. and Nisbet,R.

    E-Print Network [OSTI]

    Hall, Spencer

    of nutrient per unit habitat. This quantity is not represented by its own equation, but is simply the product * ! "# $ %& kQ (B1c) P2,NL * =QPH * Q 2,NL * (B1d) where both nutrient content of plant and herbivore biomass increase with enrichment (Table B1). Plant biomass decreases with enrichment until a certain level: S

  12. NAME 10-digit PUID # RECITATION INSTRUCTOR RECITATION ...

    E-Print Network [OSTI]

    Fill in the above items in print. Also Write ... um 1:35” :LW x: 'x : QA-m (__,lp<)=-1 D. _2 ... d'X. %\\. A. 3 Q 2/. +02% Haw, +02%. 35 $2 $2 m 2 _+2$2 ++ e 22 22.

  13. 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

  14. 14 STEP DETACHMENT MODELING DIAGNOSTICS USING EXPERIMENTAL DATA TO CONSTRAIN THE PLASMA SOLUTION COMPARISON WITH DTS

    E-Print Network [OSTI]

    Stangeby, P. C.

    density entering each flux tube is calculated from the standard 2 Point Model relation, q = 2 T /7L, where recombination neglected. 12. Momentum loss term, S , also rectangular in shape, extends from S to the target. Target temperature was assigned by a search process: with the foregoing prescription, and assuming some

  15. 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.

    2014-09-01T23:59:59.000Z

    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.

  16. 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

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

    E-Print Network [OSTI]

    2013-03-11T23:59:59.000Z

    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.

  18. Theoretische Physik Data-nDIS[events]Data-nDIS[events

    E-Print Network [OSTI]

    V] Etb [GeV] nch,b 1 - Eout,b / Ein,b QCDINS (default) QCDINS ( x'>0.325) H1 preliminary Q' 2 rec ][GeV2 Physik ,,Feuerballs" (Etb) verringern sich stark [DESY 00- 172], wenn auch in den Daten die theoretisch

  19. EMC effect, short-range nuclear correlations, neutron stars

    E-Print Network [OSTI]

    Mark Strikman

    2011-10-25T23:59:59.000Z

    The recent x>1 (e,e') and correlation experiments at momentum transfer Q^2 \\ge 2 GeV^2 confirm presence of short-range correlations (SRC) in nuclei mostly build of nucleons. Recently we evaluated in a model independent way the dominant photon contribution to the nuclear structure. Taking into account this effect and using definition of x consistent with the exact kinematics of eA scattering (with exact sum rules) results in the significant reduction of R_A(x,Q^2)=F_{2A}(x,Q^2)/F_{2N}(x,Q^2) ratio which explains \\sim 50% of the EMC effect for x\\le 0.55 where Fermi motion effects are small. The remaining part of the EMC effect at $x\\ge 0.5$ is consistent with dominance of the contribution of SRCs. Implications for extraction of the F_{2n}/F_{2p} ratio are discussed. Smallness of the non-nucleonic degrees of freedom in nuclei matches well the recent observation of a two-solar mass neutron star, and while large pn SRCs lead to enhancement of the neutron star cooling rate for kT\\le 0.01 MeV.

  20. EMC effect, short-range nuclear correlations, neutron stars

    E-Print Network [OSTI]

    Strikman, Mark

    2011-01-01T23:59:59.000Z

    The recent x> 1 (e,e') and correlation experiments at momentum transfer Q^2 \\ge 2 GeV^2 confirm presence of short-range correlations (SRC) in nuclei mostly build of nucleons. Recently we evaluated in a model independent way the dominant photon contribution to the nuclear structure. Taking into account this effect as using definition of x consistent with the exact kinematics of eA scattering (with exact sum rules) results in the significant reduction of R_A(x,Q^2)=F_{2A}(x,Q^2)/F_{2N}(x,Q^2) ratio which explains the bulk of the EMC effect for x\\le 0.55 where Fermi motion effects are small. The remaining part of the EMC effect at x\\ge 0.5 is consistent with dominance of the contribution of SRCs. Implications for extraction of the $F_{2n}/F_{2p}$ ratio are discussed. Dominance of the nucleonic degrees of freedom even for high local densities is consistent with the observation of neutron star of a double Solar mass. Smallness of the non-nucleonic degrees of freedom in nuclei matches well the recent observation of...

  1. Nonlinear harmonic generation and devices in doubly resonant Kerr cavities Hila Hashemi,1

    E-Print Network [OSTI]

    Nonlinear harmonic generation and devices in doubly resonant Kerr cavities Hila Hashemi,1 Alejandro of the nonlinear dynamics of third-harmonic generation 3 via Kerr 3 nonlinearities in a resonant cavity harmonic generation, by a factor of V/Q2 , where V is the modal volume and Q is the lifetime, and can even

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

    SciTech Connect (OSTI)

    Johnson, Myriam James [Argonne National Laboratory

    2013-08-01T23:59:59.000Z

    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.

  3. 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

  4. Selectivity in the interactions between positively charged small molecules and negatively charged biopolymers

    E-Print Network [OSTI]

    Elson-Schwab, Lev

    2006-01-01T23:59:59.000Z

    1 H NMR (400 MHz, acetonitrile-d 3 ) ? 8.58-8.50 (q, 2H),HPLC (C-18, 0-30% acetonitrile (0.1% TFA) in water (0.1 %purification (C-8, 5-13% acetonitrile (0.1% TFA) in water

  5. Interview with Michael Herzfeld

    E-Print Network [OSTI]

    Herzfeld, Michael

    of life and a moral universe; Q2. Who were your teachers/mentors in anthropology? 7:32 min Because I took the Tripos, I went to lectures of Meyer Fortes, sadly I did not attend Stanley Tambiah’s lectures at that time – who later became a wonderful friend...

  6. VI.4. SINGUL ARE KOHOMOLOGIE 313 VI.4.20. Beispiel. Aus Satz VI.4.11 und Beispiel V.4.13 bzw. Beispiel V.7.37

    E-Print Network [OSTI]

    Haller, Stefan

    , 12, . . . 0 sonst Ist n m dann induziert die kanonische Inklusion : HPn HPm Isomor- phismen : Hq (HPm ; G) = - Hq (HPn ; G), f¨ur alle q 2n. VI.4.22. Beispiel. Aus Satz VI.4.11 und Proposition V

  7. Compactness of the ? ? -Neumann Operator on the Intersection Domains in ?^(N)

    E-Print Network [OSTI]

    Ayyuru, Mustafa

    2014-07-10T23:59:59.000Z

    ) domains satisfies McNeal's property ( P ?). More precisely, let ?_(1) and ?_(2) be bounded (not necessarily smooth) pseudoconvex domains in ?^(n) which intersect each other in a domain ?. If the ? ?-Neumann operators N_(q)^(?_(1)) and N_(q)^(?_(2...

  8. Cellularity and the Jones basic construction Frederick Goodman & John Graber

    E-Print Network [OSTI]

    Sunder, V S

    Q2 ... such as · An = Brauer algebra, Qn = symmetric group algebra. · An = BMW algebra, Qn = Hecke algebra. · An = cyclotomic BMW algebra, Qn = cyclotomic Hecke algebra. · An = partition algebra, Qn. (Wenzl applied this to Brauer and BMW algebras.) 5. One is also interested in non

  9. Our reference: RENE 4564 P-authorquery-v9 AUTHOR QUERY FORM

    E-Print Network [OSTI]

    Keywords: Wind potential Wind energy Climate changes Wind scenarios a b s t r a c t Brazil's wind energy emis- sions. The potential inland wind power resources in Brazil could reach more than 145,000 MW assistance. #12;The impacts of global climate changes on the wind power density in Brazil Q2 Enio B. Pereira

  10. INTRODUCTION Greenhouse Gas Emissions in an Urban Environment

    E-Print Network [OSTI]

    Hall, Sharon J.

    . Emissions of CO2, N2O, and CH4 in periodically flooded patch types during Winter 2013. We sampled three: How are emissions of CO2, CH4, and N2O distributed across the urban landscape? Q2: Are aquatic, and CH4 fluxes during Winter 2013 (Figs. 1 & 2). · Generally, CO2 emissions were highest within all patch

  11. Separated Response Functions in Exclusive, Forward $?^{\\pm}$ Electroproduction on Deuterium

    E-Print Network [OSTI]

    G. M. Huber; H. P. Blok; C. Butuceanu; D. Gaskell; T. Horn; D. J. Mack; D. Abbott; K. Aniol; H. Anklin; C. Armstrong; J. Arrington; K. Assamagan; S. Avery; O. K. Baker; B. Barrett; E. J. Beise; C. Bochna; W. Boeglin; E. J. Brash; H. Breuer; C. C. Chang; N. Chant; M. E. Christy; J. Dunne; T. Eden; R. Ent; H. Fenker; E. F. Gibson; R. Gilman; K. Gustafsson; W. Hinton; R. J. Holt; H. Jackson; S. Jin; M. K. Jones; C. E. Keppel; P. H. Kim; W. Kim; P. M. King; A. Klein; D. Koltenuk; V. Kovaltchouk; M. Liang; J. Liu; G. J. Lolos; A. Lung; D. J. Margaziotis; P. Markowitz; A. Matsumura; D. McKee; D. Meekins; J. Mitchell; T. Miyoshi; H. Mkrtchyan; B. Mueller; G. Niculescu; I. Niculescu; Y. Okayasu; L. Pentchev; C. Perdrisat; D. Pitz; D. Potterveld; V. Punjabi; L. M. Qin; P. E. Reimer; J. Reinhold; J. Roche; P. G. Roos; A. Sarty; I. K. Shin; G. R. Smith; S. Stepanyan; L. G. Tang; V. Tadevosyan; V. Tvaskis; R. L. J. van der Meer; K. Vansyoc; D. Van Westrum; S. Vidakovic; J. Volmer; W. Vulcan; G. Warren; S. A. Wood; C. Xu; C. Yan; W. -X. Zhao; X. Zheng; B. Zihlmann; The Jefferson Lab Fpi Collaboration

    2014-12-16T23:59:59.000Z

    Background: Measurements of forward exclusive meson production at different squared four-momenta of the exchanged virtual photon, $Q^2$, 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 $\\pi^-$ and $\\pi^+$ 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. Method: Data were acquired with 2.6-5.2 GeV electron beams and the HMS+SOS spectrometers in Jefferson Lab Hall C, at central $Q^2$ values of 0.6, 1.0, 1.6 GeV$^2$ at W=1.95 GeV, and $Q^2$=2.45 GeV$^2$ at W=2.22 GeV. There was significant coverage in $\\phi$ and $\\epsilon$, which allowed separation of $\\sigma_{L,T,LT,TT}$. Results: $\\sigma_L$ shows a clear signature of the pion pole, with a sharp rise at small -t. In contrast, $\\sigma_T$ is much flatter versus t. The longitudinal/transverse ratios evolve with $Q^2$ and t, and at the highest $Q^2$=2.45 GeV$^2$ show a slight enhancement for $\\pi^-$ production compared to $\\pi^+$. The $\\pi^-/\\pi^+$ ratio for transverse photons exhibits only a small $Q^2$-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 $\\sigma_{TT}/\\sigma_T$ ratio also drops rapidly with $Q^2$, qualitatively consistent with s-channel helicity conservation. The $\\pi^-/\\pi^+$ 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.

  12. 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

    2015-01-01T23:59:59.000Z

    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

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

    SciTech Connect (OSTI)

    Huber, G M; Blok, H P; Butuceanu, C; Gaskell, D; Horn, T; Mack, D J; Abbott, D; Aniol, K; Anklin, H; Armstrong, C; Arrington, J; Assamagan, K; Avery, S; Baker, O K; Barrett, B; Beise, E J; Bochna, C; Boeglin, W; Brash, E J; Breuer, H; Chang, C C; Chant, N; Christy, M E; Dunne, J; Eden, T; Ent, R; Fenker, H; Gibson, E F; Gilman, R; Gustafsson, K; Hinton, W; Holt, R J; Jackson, H; Jin, S; Jones, M K; Keppel, C E; Kim, P H; Kim, W; King, P M; Klein, A; Koltenuk, D; Kovaltchouk, V; Liang, M; Liu, J; Lolos, G J; Lung, A; Margaziotis, D J; Markowitz, P; Matsumura, A; McKee, D; Meekins, D; Mitchell, J; Miyoshi, T; Mkrtchyan, H; Mueller, B; Niculescu, G; Niculescu, I; Okayasu, Y; Pentchev, L; Perdrisat, C; Pitz, D; Potterveld, D; Punjabi, V; Qin, L M; Reimer, P E; Reinhold, J; Roche, J; Roos, P G; Sarty, A; Shin, I K; Smith, G R; Stepanyan, S; Tang, L G; Tadevosyan, V; Tvaskis, V; van der Meer, R L; Vansyoc, K; Van Westrum, D; Vidakovic, S; Volmer, J; Vulcan, W; Warren, G; Wood, S A; Xu, C; Yan, C; Zhao, W -X; Zheng, X; Zihlmann, B

    2015-01-01T23:59:59.000Z

    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. 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.

  14. 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

    2015-01-01T23:59:59.000Z

    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

  15. 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.; Arrington, J.; Assamagan, K.; Avery, S.; Baker, O. K.; Barrett, B.; Beise, E. J.; Bochna, C.; Boeglin, W.; Brash, E. J.; Breuer, H.; Chang, C. C.; Chant, N.; Christy, M. E.; Dunne, J.; Eden, T.; Ent, R.; Fenker, H.; Gibson, E. F.; Gilman, R.; Gustafsson, K.; Hinton, W.; Holt, R. J.; Jackson, H.; Jin, S.; Jones, M. K.; Keppel, C. E.; Kim, P. H.; Kim, W.; King, P. M.; Klein, A.; Koltenuk, D.; Kovaltchouk, V.; Liang, M.; Liu, J.; Lolos, G. J.; Lung, A.; Margaziotis, D. J.; Markowitz, P.; Matsumura, A.; McKee, D.; Meekins, D.; Mitchell, J.; Miyoshi, T.; Mkrtchyan, H.; Mueller, B.; Niculescu, G.; Niculescu, I.; Okayasu, Y.; Pentchev, L.; Perdrisat, C.; Pitz, D.; Potterveld, D.; Punjabi, V.; Qin, L. M.; Reimer, P. E.; Reinhold, J.; Roche, J.; Roos, P. G.; Sarty, A.; Shin, I. K.; Smith, G. R.; Stepanyan, S.; Tang, L. G.; Tadevosyan, V.; Tvaskis, V.; van der Meer, R. L.; Vansyoc, K.; Van Westrum, D.; Vidakovic, S.; Volmer, J.; Vulcan, W.; Warren, G.; Wood, S. A.; Xu, C.; Yan, C.; Zhao, W.-X.; Zheng, X.; Zihlmann, B.

    2014-01-01T23:59:59.000Z

    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. 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.

  16. 3Q/4Q99 F-Area Hazardous Waste Management Facility Corrective Action Report - Third and Fourth Quarter 1999, Volumes I and II

    SciTech Connect (OSTI)

    Chase, J.

    2000-05-12T23:59:59.000Z

    Savannah River Site (SRS) monitors groundwater quality at the F-Area Hazardous Waste management Facility (HWMF) and provides results of this monitoring to the South Carolina Department of Health and Environmental Control (SCDHEC) semiannually as required by the Resource Conservation and Recovery Act (RCRA) permit. SRS also performs monthly sampling of the Wastewater Treatment Unit (WTU) effluent in accordance with Section C of the Underground Injection Control (UIC) application.

  17. Environ. Sci. Technol. 19Q4,28, 1422-1429 Rapid Kinetics of Cu(I I) Adsorption/Desorption on Goethite

    E-Print Network [OSTI]

    Sparks, Donald L.

    /Desorption on Goethite Paul R. Grossl' and Donald L. Sparks Department of Piant and Soil Sciences, University of Delaware, Washington 99352 The kinetics of Cu2+adsorption/desorption on goethite (a-FeOOH) was evaluated using/desorption on goethite. The rate of these relaxations (7)decreased with an increase in pH, alongthe adsorption edge

  18. Radioactive contamination of BaF2 crystal scintillator

    E-Print Network [OSTI]

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

    2013-01-01T23:59:59.000Z

    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.

  19. 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

    2014-07-29T23:59:59.000Z

    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.

  20. Infrared renormalons and the relations between the Gross-Llewellyn Smith and the Bjorken polarized and unpolarized sum rules

    E-Print Network [OSTI]

    A. L. Kataev

    2005-05-27T23:59:59.000Z

    It is demonstrated that the infrared renormalon calculus indicates that the QCD theoretical expressions for the Gross-Llewelln Smith sum rules and for the Bjorken polarized and unpolarized ones contain an identical negative twist-4 1/Q^2 correction. This observation is supported by the consideration of the results of calculations of the corresponding twist-4 matrix elements. Together with the indication of the similarity of perturbative QCD corrections to these three sum rules, this observation leads to simple new theoretical relations between the Gross-Llewellyn Smith and Bjorken polarized and unpolarized sum rules in the energy region $Q^2\\geq 1 GeV^2$. The validity of this relation is checked using concrete experimental data for the Gross-Llewellyn Smith and Bjorken polarized sum rules

  1. Hadron production from $?-Deuteron$ scattering at $\\sqrt{s}=17 GeV$ at COMPASS

    E-Print Network [OSTI]

    Astrid Morreale

    2011-08-29T23:59:59.000Z

    Hadrons proceeding from quasi-real photo-production are one of the many probes accesible at the Common Muon Proton Apparatus for Structure and Spectroscopy (COMPASS) at CERN. These hadrons provide information on the scattering between photon and partons through \\gamma-gluon(g) direct channels as well as q-g resolved processes. Comparisons of unpolarized differential cross section measurements to next-to-leading order (NLO) pQCD calculations are essential to develop our understanding of proton-proton and lepton-nucleon scattering at varying center of mass energies. These measurements are important to asses the applicability of NLO pQCD in interpreting polarized processes. In this talk we will present the unidentified charged separated hadron cross-sections measured by the COMPASS experiment at center of mass energy of \\sqrt{s}=17GeV, low Q^{2} (Q^{2}1.0 GeV/c.)

  2. Direct Measurement of \\DeltaG/G at Compass

    E-Print Network [OSTI]

    Yann Bedfer; for the COMPASS Collaboration

    2006-01-19T23:59:59.000Z

    The gluon polarization $\\Delta{G}/G$ is the key to a further clarification of the spin structure of the nucleon. The COMPASS collaboration at CERN has set out to undertake the direct determination of this quantity. It accesses the gluon distribution via the photon-gluon fusion process (PGF) in scattering polarized muons off a polarized deuteron target. And it explores three different channels to tag the PGF: open charm production and high transverse momentum (high p_T), in either electroproduction (Q^2 > 1 GeV^2) or quasi-real photoproduction (Q^2 < 1 GeV^2). The high p_T quasi-real photoproduction channel yields the most precise measurement. The result indicates that the gluon polarization is small. I describe its experimental aspects and its theoretical framework, based on PYTHIA. And I report on the preliminary results obtained in the other two channels, and on the prospects for future analysis and data taking.

  3. NLO corrections to ultra-high energy neutrino-nucleon scattering, shadowing and small x

    E-Print Network [OSTI]

    Rahul Basu; Debajyoti Choudhury; Swapan Majhi

    2002-10-22T23:59:59.000Z

    We reconsider the Standard Model interactions of ultra-high energy neutrinos with matter. The next to leading order QCD corrections are presented for charged-current and neutral-current processes. Contrary to popular expectations, these corrections are found to be quite substantial, especially for very large (anti-) neutrino energies. Hence, they need to be taken into account in any search for new physics effects in high-energy neutrino interactions. In our extrapolation of the parton densities to kinematical regions as yet unexplored directly in terrestrial accelerators, we are guided by double asymptotic scaling in the large Q^2 and small Bjorken x region and to models of saturation in the low Q^2 and low x regime. The sizes of the consequent uncertainties are commented upon. We also briefly discuss some variables which are insensitive to higher order QCD corrections and are hence suitable in any search for new physics.

  4. x- and xi-scaling of the Nuclear Structure Function at Large x

    E-Print Network [OSTI]

    J. Arrington; C. S. Armstrong; T. Averett; O. K. Baker; L. de Bever; C. W. Bochna; W. Boeglin; B. Bray; R. D. Carlini; G. Collins; C. Cothran; D. Crabb; D. Day; J. A. Dunne; D. Dutta; R. Ent; B. W. Filippone; A. Honegger; E. W. Hughes; J. Jensen; J. Jourdan; C. E. Keppel; D. M. Koltenuk; R. Lindgren; A. Lung; D. J Mack; J. McCarthy; R. D. McKeown; D. Meekins; J. H. Mitchell; H. G. Mkrtchyan; G. Niculescu; I. Niculescu; T. Petitjean; O. Rondon; I. Sick; C. Smith; B. Terburg; W. F. Vulcan; S. A. Wood; C. Yan; J. Zhao; B. Zihlmann

    2001-02-08T23:59:59.000Z

    Inclusive electron scattering data are presented for ^2H and Fe targets at an incident electron energy of 4.045 GeV for a range of momentum transfers from Q^2 = 1 to 7 (GeV/c)^2. Data were taken at Jefferson Laboratory for low values of energy loss, corresponding to values of Bjorken x greater than or near 1. The structure functions do not show scaling in x in this range, where inelastic scattering is not expected to dominate the cross section. The data do show scaling, however, in the Nachtmann variable \\xi. This scaling may be the result of Bloom Gilman duality in the nucleon structure function combined with the Fermi motion of the nucleons in the nucleus. The resulting extension of scaling to larger values of \\xi opens up the possibility of accessing nuclear structure functions in the high-x region at lower values of Q^2 than previously believed.

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

    E-Print Network [OSTI]

    H1 Collaboration

    2010-01-04T23:59:59.000Z

    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.

  6. 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; Keller, D; Khandaker, M; Kheterpal, P; Kim, A; Kim, W; Klein, A; Klein, F J; Kubarovsky, V; Kuhn, S E; Kuleshov, S V; Kuznetsov, V; Laget, J M; Lu, H Y; MacGregor, I.D. J; Mao, Y; Markov, N; Mayer, M; McAndrew, J; McKinnon, B; Meyer, C A; Mineeva, T; Mirazita, M; Mokeev, V; Moreno, B; Moutarde, H; Muneva, E; Nadel-Turonski, P; Ni, A; Niccolai, S; Niculescu, G; Niculescu, I; Osipenko, M; Ostrovidov, A I; Pappalardo, L; Paremuzyan, R; Park, K; Park, S; Pasyuk, E; Anefalos Pereira, S; Phelps, E; Pisano, S; Pozdniakov, S; Price, J W; Procureur, S; Protopopescu, D; Raue, B A; Reimer, P E; Ricco, G; Rimal, D; Ripani, M; Ritchie, B G; Rosner, G; Rossi, P; Sabatie, F; Saini, M S; Salgado, C; Schott, D; Schumacher, R A; Seraydaryan, H; Sharabian, Y G; Smith, E S; Smith, G D; Sober, D I; Sokhan, D; Stepanyan, S S; Stepanyan, S; Stoler, P; Strauch, S; Taiuti, M; Tang, W; Taylor, C E; Tedeschi, D J; Tkachenko, S; Ungaro, M; Vernarsky, B; Vineyard, M F; Voskanyan, H; Voutier, E; Watts, D; Weinstein, L B; Weygand, D P; Wood, M H; Zachariou, N; Zhao, B; Zhao, Z W

    2012-06-12T23:59:59.000Z

    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). 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 the color transparency effects.

  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

    2013-11-01T23:59:59.000Z

    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. 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

    2014-04-24T23:59:59.000Z

    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.

  9. 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.

    2014-08-01T23:59:59.000Z

    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.

  10. Precision measurements of g1 of the proton and the deuteron with 6 GeV electrons

    SciTech Connect (OSTI)

    Prok, Yelena; Bosted, Peter; Kvaltine, Nicholas; Adhikari, Krishna; Adikaram-Mudiyanselage, Dasuni; Aghasyan, Mher; Amaryan, Moskov; Anderson, Mark; Anefalos Pereira, Sergio; Avagyan, Harutyun; Baghdasaryan, Hovhannes; Ball, Jacques; Baltzell, Nathan; Battaglieri, Marco; Biselli, Angela; Bono, Jason; Briscoe, William; Brock, Joseph; Brooks, William; Bueltmann, Stephen; Burkert, Volker; Carlin, Christopher; Carman, Daniel; Celentano, Andrea; Chandavar, Shloka; Colaneri, Luca; Cole, Philip; Contalbrigo, Marco; Cortes, Olga; Crabb, Donald; Crede, Volker; D'Angelo, Annalisa; Dashyan, Natalya; De Vita, Raffaella; De Sanctis, Enzo; Deur, Alexandre; Djalali, Chaden; Dodge, Gail; Doughty, David; Dupre, Raphael; El Alaoui, Ahmed; El Fassi, Lamiaa; Elouadrhiri, Latifa; Fedotov, Gleb; Fegan, Stuart; Fersch, Robert; Fleming, Jamie; Forest, Tony; Garcon, Michel; Gevorgyan, Nerses; Ghandilyan, Yeranuhi; Gilfoyle, Gerard; Girod-Gard, Francois-Xavier; Giovanetti, Kevin; Goetz, John; Gohn, Wesley; Gothe, Ralf; Griffioen, Keith; Guegan, Baptiste; Guler, Nevzat; Hafidi, Kawtar; Hanretty, Charles; Harrison, Nathan; Hattawy, Mohammad; Hicks, Kenneth; Ho, Dao; Holtrop, Maurik; Ilieva, Yordanka; Ireland, David; Ishkhanov, Boris; Isupov, Evgeny; Jawalkar, Sucheta; Jiang, Xiaodong; Jo, Hyon-Suk; Joo, Kyungseon; Kalantarians, Narbe; Keith, Christopher; Keller, Daniel; Khandaker, Mahbubul; Kim, Andrey; Kim, Wooyoung; Klein, Andreas; Klein, Franz; Koirala, Suman; Kubarovsky, Valery; Kuhn, Sebastian; Kuleshov, Sergey; Lenisa, Paolo; Livingston, Kenneth; Lu, Haiyun; MacGregor, Ian; Markov, Nikolai; Mayer, Michael; McKinnon, Bryan; Meekins, David; Mineeva, Taisiya; Mirazita, Marco; Mokeev, Viktor; Montgomery, Rachel; MOUTARDE, Herve; Movsisyan, Aram; Munevar Espitia, Edwin; Munoz Camacho, Carlos; Nadel-Turonski, Pawel; Niccolai, Silvia; Niculescu, Gabriel; Niculescu, Maria; Osipenko, Mikhail; Ostrovidov, Alexander; Pappalardo, Luciano; Paremuzyan, Rafayel; Park, K.; Peng, Peng; Phillips, J.J.; Pierce, Joshua; Pisano, Silvia; Pogorelko, Oleg; Pozdniakov, Serguei; Price, John; Procureur, Sebastien; Protopopescu, Dan; Puckett, Andrew; Raue, Brian; Rimal, Dipak; Ripani, Marco; Rizzo, Alessandro; Rosner, Guenther; Rossi, Patrizia; Roy, Priyashree; Sabatie, Franck; Saini, Mukesh; Salgado, Carlos; Schott, Diane; Schumacher, Reinhard; Seder, Erin; Sharabian, Youri; Simonyan, Ani; Smith, Claude; Smith, Gregory; Sober, Daniel; Sokhan, Daria; Stepanyan, Stepan; Stepanyan, Samuel; Strakovski, Igor; Strauch, Steffen; Sytnik, Valeriy; Taiuti, Mauro; Tang, Wei; Tkachenko, Svyatoslav; Ungaro, Maurizio; Vernarsky, Brian; Vlasov, Alexander; Voskanyan, Hakob; Voutier, Eric; Walford, Natalie; Watts, Daniel; Weinstein, Lawrence; Zachariou, Nicholas; Zana, Lorenzo; Zhang, Jixie; Zhao, Bo; Zhao, Zhiwen; Zonta, Irene

    2014-08-01T23:59:59.000Z

    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.

  11. Flavor decomposition of the elastic nucleon electromagnetic form factors

    SciTech Connect (OSTI)

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

    2011-06-01T23:59:59.000Z

    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.

  12. 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

    2012-05-11T23:59:59.000Z

    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.

  13. Gauge-variant propagators and the running coupling from lattice QCD

    E-Print Network [OSTI]

    E. -M. Ilgenfritz; M. Müller-Preussker; A. Sternbeck; A. Schiller

    2006-01-21T23:59:59.000Z

    On the occasion of the 70th birthday of Prof. Adriano Di Giacomo we report on recent numerical computations of the Landau gauge gluon and ghost propagators as well as of a non-symmetric MOM-scheme ghost-gluon vertex in quenched and full lattice QCD. Special emphasis is paid to the Gribov copy problem and to the unquenching effect. The corresponding running coupling \\alpha_s(q^2) is found and shown to decrease for q^2 \\le 0.3 GeV^2 in the infrared limit. No indication for a non-trivial infrared fixed point is seen in agreement with findings from truncated systems of Dyson-Schwinger equations treated on a four-dimensional torus.

  14. Measurements of the Running of the Electromagnetic Coupling at LEP

    E-Print Network [OSTI]

    Salvatore Mele

    2006-10-12T23:59:59.000Z

    The study of Bhabha scattering at e^+e^- colliders probes the running of the electromagnetic coupling. After early measurements by the VENUS collaboration at TRISTAN and the by L3 collaboration at LEP, two recent analyses have been performed by the OPAL and L3 collaborations. The OPAL collaboration studied high-statistics low-angle Bhabha scattering at LEP, achieving a precise determination of the running of alpha in the region 1.8GeV^2<-Q^2<6.1GeV^2. The L3 collaboration investigated high-energy large-angle Bhabha scattering to first probe the region 1800GeV^2 < -Q^2 < 21600GeV^2. All measurements are described and a global overview of their agreement with QED predictions is given.

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

    E-Print Network [OSTI]

    Irinel Caprini; Jan Fischer

    2006-12-21T23:59:59.000Z

    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.

  16. Quantum corrections to conductivity for semiconductors with various structures

    E-Print Network [OSTI]

    S. A. Alavi; A. Tatar

    2011-04-05T23:59:59.000Z

    We study the magnetic field dependences of the conductivity in heavily doped, strongly disordered 2D quantum well structures within wide conductivity and temperature ranges. We show that the exact analytical expression derived in our previous paper [1], is in better agreement than the existing equation i.e. Hikami(et.al.,) expression [2,3], with the experimental data even in low magnetic field for which the diffusion approximation is valid. On the other hand from theoretical point of view we observe that our equation is also rich because it establishes a strong relationship between quantum corrections to the conductivity and the quantum symmetry su_{q}(2). It is shown that the quantum corrections to the conductivity is the trace of Green function made by a generator of su_{q}(2)algebra. Using this fact we show that the quantum corrections to the conductivity can be expressed as a sum of an infinite number of Feynman diagrams.

  17. EMC effect and nuclear structure functions

    E-Print Network [OSTI]

    S. Atashbar Tehrani; A. Mirjalili; Ali N. Khorramian

    2006-09-03T23:59:59.000Z

    We analyze experimental data of nuclear structure function ratios $F_2^A/F_2^D$ for obtaining optimum parton distribution functions (PDFs) in nuclei. Then, uncertainties of the nuclear PDFs are estimated by the Hessian method. Parametrization of nuclear parton distribution is investigated in the leading order of $\\alpha_s$. The parton distribution are provided at $Q^2=1 GeV^2$ with a number of parameters, which are determined by a $\\chi^2$ analysis of the data on nuclear structure function. From the analysis, we propose parton distributions at $Q^2=1 GeV^2$ for nuclei from deuteron to heavy ones with a mass number $A\\sim 208$.

  18. New measurements of the EMC effect in very light nuclei

    SciTech Connect (OSTI)

    Seely, J; Gaskell, D; Arrington, J; Fomin, N; Solvignon, P; Asaturyan, R; Benmokhtar, F; Boeglin, W; Boillat, B; Bosted, P; Bruell, A; Bukhari, M.H.S.; Christy, M E; Clasie, B; Connell, S; Dalton, M; Day, D; Dunne, J; Dutta, D; El Fassi, L; Ent, R; Fenker, H; Filippone, B W; Gao, H; Hill, C; Holt, R J; Horn, T; Hungerford, E; Jones, M K; Jourdan, J; Kalantarians, N; Keppel, C E; Kiselev, D; Kotulla, M; Lee, C; Lung, A F; Malace, S; Meekins, D G; Mertens, T; Mkrtchyan, H; Navasardyan, T; Niculescu, G; Niculescu, I; Nomura, H; Okayasu, Y; Opper, A K; Perdrisat, C; Potterveld, D H; Punjabi, V; Qian, X; Reimer, P E; Roche, J; Rodriguez, V M; Rondon, O; Schulte, E; Segbefia, E; Slifer, K; Smith, G R; Tadevosyan, V; Tajima, S; Tang, L; Testa, G; Trojer, R; Tvaskis, V

    2009-11-01T23:59:59.000Z

    A high precision measurement of the proton elastic form factor ratio $\\mu G_{\\mathrm{E}}/G_{\\mathrm{M}}$ in the range of $Q^2$=0.3 - 0.7~GeV/$c^2$ has been made using recoil polarimetry method in Jefferson Lab Hall A. In this low $Q^2$ range, previous data (Bates, LEDEX) along with many fits and calculations indicate substantial deviations of the ratio from unity, and continue to suggest that structures might be present in the individual form factors, and in the ratio. In E08-007, with 80\\% polarized electron beam for 24 days, we are able to achieve $\\sim 0.5\\%$ statistical uncertainty. This high precision result will confirm or reute all existing suggestions of few percent structures in the form factors ratio. Beyond the intrinsic interest in nucleon structure, the improved form factor measurements also have implications for DVCS, determinations of the proton Zemach radius and for parity violation experiments.

  19. 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 [JLAB

    2013-11-01T23:59:59.000Z

    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 on which can be used to constrain the spin-dependent nuclear smearing functions in 3He.

  20. Nucleon axial form factors from two-flavour Lattice QCD

    E-Print Network [OSTI]

    P. M. Junnarkar; S. Capitani; D. Djukanovic; G. von Hippel; J. Hua; B. Jäger; H. B. Meyer; T. D. Rae; H. Wittig

    2014-11-21T23:59:59.000Z

    We present preliminary results on the axial form factor $G_A(Q^2)$ and the induced pseudoscalar form factor $G_P(Q^2)$ of the nucleon. A systematic analysis of the excited-state contributions to form factors is performed on the CLS ensemble `N6' with $m_\\pi = 340 \\ \\text{MeV}$ and lattice spacing $a \\sim 0.05 \\ \\text{fm}$. The relevant three-point functions were computed with source-sink separations ranging from $t_s \\sim 0.6 \\ \\text{fm}$ to $t_s \\sim \\ 1.4 \\ \\text{fm}$. We observe that the form factors suffer from non-trivial excited-state contributions at the source-sink separations available to us. It is noted that naive plateau fits underestimate the excited-state contributions and that the method of summed operator insertions correctly accounts for these effects.

  1. Testing the general relativistic ''no-hair'' theorems using the galactic center black hole SgrA*

    E-Print Network [OSTI]

    Clifford M. Will

    2007-12-29T23:59:59.000Z

    If a class of stars orbits the central black hole in our galaxy in short period (~ 0.1 year), high eccentricity (~ 0.9) orbits, they will experience precessions of their orbital planes induced by both relativistic frame-dragging and the quadrupolar gravity of the hole, at levels that could be as large as 10 microarcseconds per year, if the black hole is rotating faster than 1/2 of its maximum rotation rate. Astrometric observations of the orbits of at least two such stars can in principle lead to a determination of the angular momentum vector J of the black hole and its quadrupole moment Q_2. This could lead to a test of the general relativistic no-hair theorems, which demand that Q_2 = - J^2/M. Future high-precision adaptive infrared optics instruments make make such a fundamental test of the black-hole paradigm possible.

  2. Workshop on low x physics Prague, September 17, 2004

    E-Print Network [OSTI]

    Detlef Bartsch University of Bonn · motivation · charm · beauty · summary ZEUS DESY #12;HERA : Inelasticity W : Mass of the hadronic system p g e± e± -Q2 W2 x Detlef Bartsch New results on heavy flavours e± e± p e± e± Detlef Bartsch New results on heavy flavours at HERA 3 #12;QCD calculations and MC

  3. DESY98205 ISSN 04189833 December 1998

    E-Print Network [OSTI]

    , V. Brisson 27 , D.P. Brown 22 , W. BrË?uckner 13 , P. Bruel 28 , D. Bruncko 17 , J. BË?urger 11 , F.J. Campbell 11 , T. Carli 26 , E. Chabert 23 , M. Charlet 4 , J. Châ??yla 30 , D. Clarke 5 , B. Clerbaux 4 , J­differential dijet cross­section, d 3 #27; ep =dQ 2 dE t 2 dx jets , is measured with the H1 detector at HERA

  4. DESY 03-052 ISSN 0418-9833 Search for new physics

    E-Print Network [OSTI]

    , V. Boudry27, W. Braunschweig1, V. Brisson26, H.-B. Br¨oker2, D.P. Brown10, D. Bruncko16, F.W. B energy. The neutral current cross section measurements d/dQ2, corresponding to integrated luminosities¨usser11, A. Bunyatyan12,34, A. Burrage18, G. Buschhorn25, L. Bystritskaya23, A.J. Campbell10, S. Caron1, F

  5. Electroweak results from HERA

    E-Print Network [OSTI]

    Zhiqing Zhang; for the H1; ZEUS Collaborations

    2008-01-31T23:59:59.000Z

    The inclusive neutral and charged current deep inelastic scattering processes at high Q2 provide the main basis for electroweak studies at HERA. These studies include the determination of the W boson propagator mass and weak neutral current couplings of light quarks to the Z0 boson. The polarised electron or positron beam at HERA II gives rise to additional sensitivities for these studies. Exceptions also exist; this is the case for the single W production.

  6. Partial permutation decoding for simplex codes W. Fish, J.D. Key and E. Mwambene

    E-Print Network [OSTI]

    Key, Jennifer D.

    Partial permutation decoding for simplex codes W. Fish, J.D. Key and E. Mwambene Department for partial permutation decoding for the binary simplex codes Sn(F2) for all n 4, and for all values of s up to 2n -1 n - 1. The construction also applies to the q-ary simplex codes Sn(Fq) for q > 2, and to s

  7. Nuclear Shadowing and Antishadowing in a Unitarized BFKL Equation

    E-Print Network [OSTI]

    Jianhong Ruan; Zhenqi Shen; Wei Zhu

    2008-01-22T23:59:59.000Z

    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.

  8. 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

    1995-04-25T23:59:59.000Z

    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.

  9. Inclusive electron scattering from nuclei at x $\\appprox$ 1

    E-Print Network [OSTI]

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

    1995-01-01T23:59:59.000Z

    The inclusive A(e,e') cross section for x \\simeq 1 was measured on ^2H, 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.

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

    E-Print Network [OSTI]

    Fomin, N; Asaturyan, R; Benmokhtar, F; Boeglin, W; Bosted, P; Bruell, A; Bukhari, M H S; Chudakov, E; Clasie, B; Connell, S H; Dalton, M M; Daniel, A; Day, D B; Dutta, D; Ent, R; Fassi, L El; Fenker, H; Filippone, B W; Garrow, K; Gaskell, D; Hill, C; Holt, R J; Horn, T; Jones, M K; Jourdan, J; Kalantarians, N; Keppel, C E; Kiselev, D; Kotulla, M; Lindgren, R; Lung, A F; Malace, S; Markowitz, P; McKee, P; Meekins, D G; Mkrtchyan, H; Navasardyan, T; Niculescu, G; Opper, A K; Perdrisat, C; Potterveld, D H; Punjabi, V; Qian, X; Reimer, P E; Roche, J; Rodriguez, V M; Rondon, O; Schulte, E; Seely, J; Segbefia, E; Slifer, K; Smith, G R; Solvignon, P; Tadevosyan, V; Tajima, S; Tang, L; Testa, G; Trojer, R; Tvaskis, V; Vulcan, W F; Wasko, C; Wesselmann, F R; Wood, S A; Wright, J; Zheng, X

    2011-01-01T23:59:59.000Z

    We present new, high-Q^2 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.

  11. Bounds on the kdimension of products of special posets Michael Baym # Douglas B. West +

    E-Print Network [OSTI]

    West, Douglas B.

    Trotter conjectured that dim P Ã? Q # dimP + dimQ - 2 for all posets P and Q. To shed light on this, we) the concatenation of the images of p and q under these embeddings shows that P Ã? Q embeds in R s+t , and hence dim(P Ã? Q) # dim(P ) + dim(Q). Since P and Q both appear in P Ã? Q, the trivial lower bound is max

  12. 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

  13. Singularity free analysis of a self-similar model of proton structure function at small \\textit{x}

    E-Print Network [OSTI]

    Baishali Saikia; D. K. Choudhury

    2014-09-01T23:59:59.000Z

    In this paper we make re-analysis of a self-similarity based model of the proton structure function at small \\textit{x} pursued in recent years. The additional assumption is that it should be singularity free in the entire kinematic range $0analysis indicates that the model is valid in a more restrictive range of $Q^{2}$. We also discuss the possibility of incorporation of Froissart saturation condition in the model.

  14. Analysis of CLAS data on double charge pion electroproduction

    E-Print Network [OSTI]

    Viktor Mokeev; Volker Burkert; Latifa Elouadrhiri; Gleb Fedotov; Evgeny Golovach; Eugeny Isupov; Boris Ishkhanov; Nikolay Shvedunov

    2007-10-31T23:59:59.000Z

    Recent developments in phenomenological analysis of the CLAS data on 2$\\pi$ electroproduction are presented. The contributions from isobar channels and $P_{11}(1440)$, $D_{13}(1520)$ electrocouplings at $Q^{2}$ from 0.25 to 0.6 GeV$^2$ were determined from the analysis of comprehensive data on differential and fully integrated 2$\\pi$ cross sections. Experiment Numbers: E94-005 Group: Hall B

  15. Jet Production in Polarized pp Collisions at RHIC

    E-Print Network [OSTI]

    C. A. Gagliardi; for the STAR Collaboration

    2008-08-06T23:59:59.000Z

    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).

  16. 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; Dalton, M M; Daniel, A; Day, D B; Dutta, D; Ent, R; El Fassi, L; Fenker, H; Filippone, B W; Garrow, K; Gaskell, D; Hill, C; Holt, R J; Horn, T; Jones, M K; Jourdan, J; Kalantarians, N; Keppel, C E; Kiselev, D; Kotulla, M; Lindgren, R; Lung, A F; Malace, S; Markowitz, P; McKee, P; Meekins, D G; Mkrtchyan, H; Navasardyan, T; Niculescu, G; Opper, A K; Perdrisat, C; Potterveld, D H; Punjabi, V; Qian, X; Reimer, P E; Roche, J; Rodriguez, V M; Rondon, O; Schulte, E; Seely, J; Segbefia, E; Slifer, K; Smith, G R; Solvignon, P; Tadevosyan, V; Tajima, S; Tang, L; Testa, G; Trojer, R; Tvaskis, V; Vulcan, W F; Wasko, C; Wesselmann, F R; Wood, S A

    2012-02-29T23:59:59.000Z

    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.

  17. In Brute-Force Search of Correlation Bounds for Polynomials

    E-Print Network [OSTI]

    Viola, Emanuele

    is over n-variable degree-d polynomials f with coefficients in {0, 1, . . . , p- 1}, and k = e2·i/k is the k-th complex principal root of unity. It seems natural to conjecture that for p and q fixed]). For all n: C(n, d = 2, p = 3, q = 2) = 3 2 n/2 . Moreover, Green and Roy [GR10] determine all polynomials

  18. Kemiteknik -Vrme-och strmningsteknik Processteknikens grunder (PTG) 2013

    E-Print Network [OSTI]

    Zevenhoven, Ron

    volymen för både gas- och vätskefasen. A container with volume 85 m3 contains 10 kg water as liquid and volume for both the gas and the liquid phase Old PTG exam question (4 points of 30) = T06 Q2-109. 5. SEHB. b. The steam is fed to a steam turbine. Calculate how much power (in MW) the turbine can generate

  19. 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.

    2015-01-01T23:59:59.000Z

    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.

  20. Charm and QCD at CLEO-III and CLEO-c Jim Napolitano (RPI & Cornell)

    E-Print Network [OSTI]

    Mixing) b u K K / New Tracking CsI 2cm BP Silicon 3.5cm BP He-propane Microbeta 7 Bunches 1 IR Crossing.60 Entries/6(MeV/c2) M( +) (GeV/c2 ) I 0 25 50 75 100 0991203-003 -+ K-+ mass distribution: B(0 c pK-K-+)/ B+e Normalized q2 Distribution All results are preliminary!! Form factor models 1 d dq2 × Effic. Binned data

  1. Licence-Master Sciences de la plan`ete Terre Licence (L3)

    E-Print Network [OSTI]

    Plougonven, Riwal

    Licence-Master Sciences de la plan`ete Terre Licence (L3) Physique et dynamique de l'atmosph`ere TD qualitativement pourquoi la pression diminue avec l'altitude dans l'atmosph`ere. Q2. Exprimez la loi des gaz parfaits pour l'air atmosph´erique. On rappelle que l'air atmosph´erique est un m´elange de 20% de dioxyg

  2. The magnetic form factor of the deuteron in chiral effective field theory

    E-Print Network [OSTI]

    S. Kolling; E. Epelbaum; D. R. Phillips

    2012-09-05T23:59:59.000Z

    We calculate the magnetic form factor of the deuteron up to O(eP^4) in the chiral EFT expansion of the electromagnetic current operator. The two LECs which enter the two-body part of the isoscalar NN three-current operator are fit to experimental data, and the resulting values are of natural size. The O(eP^4) description of G_M agrees with data for momentum transfers Q^2 < 0.35 GeV^2.

  3. Synthetizing hydrodynamic turbulence from noise: Formalism and applications to Plankton

    E-Print Network [OSTI]

    Bees, Martin

    are well reproduced, in particular the kinematic viscosity and energy spectrum. This practical approach, we assume that the energy is incorporated into the system in an individual wave number basis ¤ r¥ t¦ , ¤ r¥ t¦ t § 2 ¤ r¥ t¦©¨ Q 2 2 ¤ r¥ t¦¥ (1) where stands for the kinematic viscosity

  4. JOURNAL OF COMBINATORIAL THEORY, Series A 60, 183-195 (1992) The Binary Self-Dual Codes of Length up to 32

    E-Print Network [OSTI]

    Sloane, Neil J. A.

    ,, they must be an umbra1 hexad (see [3 or 51 for terminology). For 0 or an umbra1 hexad (see Fig. 1). Correspondingly there are two [24, 10, S] quarter Golay codes q2fq,~~24 EIEI1 1 1 1 1 r 1111 1 1 E!EH 1 1 r qT4, {a. b, .... fl UmbraI FIG. 1. The codes q$,, q&. #12

  5. J. Phys. III Franc-e 4 (1994) 663-669 APRIL 1994, PAGE 663 Classification

    E-Print Network [OSTI]

    Boyer, Edmond

    1994-01-01T23:59:59.000Z

    07.20F Thermal conduction through a vented support S. Buhler Institut de Physique Nucl£aire, 91406 cryogenic temperature Tj) : ( Cp (T2 Ti ~= (5) ~ jM.c~jexp -1 ~"~ also the. Inflowing heat Q2/Z of a different cryostat with two separate escape lines. The total boil-off M~~~ may be split into a support vent

  6. EUROPEAN LABORATORY FOR PARTICLE PHYSICS CERNPPE/97087

    E-Print Network [OSTI]

    based on data collected with the OPAL detec­ tor at centre­of­mass energies of 161\\Gamma172 Ge is determined in the Q 2 range from 1.86 to 135 GeV 2 using data taken at centre­of­mass energies of 91 Ge. Chrisman 4 , P.E.L. Clarke 15 , I. Cohen 23 , J.E. Conboy 15 , O.C. Cooke 8 , M. Cuffiani 2 , S. Dado 22

  7. Dark Energy in Global Brane Universe

    E-Print Network [OSTI]

    Yongli Ping; Lixin Xu; Chengwu Zhang; Hongya Liu

    2007-12-20T23:59:59.000Z

    We discuss the exact solutions of brane universes and the results indicate the Friedmann equations on the branes are modified with a new density term. Then, we assume the new term as the density of dark energy. Using Wetterich's parametrization equation of state (EOS) of dark energy, we obtain the new term varies with the red-shift z. Finally, the evolutions of the mass density parameter $\\Omega_2$, dark energy density parameter $\\Omega_x$ and deceleration parameter q_2 are studied.

  8. 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

  9. 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

  10. Information from leading neutrons at HERA

    E-Print Network [OSTI]

    V. A. Khoze; A. D. Martin; M. G. Ryskin

    2006-06-20T23:59:59.000Z

    In principle, leading neutrons produced in photoproduction and deep-inelastic scattering at HERA have the potential to determine the pion structure function, the neutron absorptive cross section and the form of the pion flux. To explore this potential we compare theoretical predictions for the x_L and p_t spectra of leading neutrons, and the Q^2 dependence of the cross section, with the existing ZEUS data.

  11. Coulomb Distortion in the Inelastic Regime

    SciTech Connect (OSTI)

    Patricia Solvignon, Dave Gaskell, John Arrington

    2009-09-01T23:59:59.000Z

    The Coulomb distortion effects have been for a long time neglected in deep inelastic scattering for the good reason that the incident energies were very high. But for energies in the range of earlier data from SLAC or at JLab, the Coulomb distortion could have the potential consequence of affecting the A-dependence of the EMC effect and of the longitudinal to transverse virtual photon absorption cross section ratio $R(x,Q^2)$.

  12. JOURNAL DE PHYSIQUE Colloque C2, supplement au n3, Tome 47, mars 1986 page C2-227

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Wakelin et al /1/ pointed out that addition of aluminium in Ni3Fe alloys increases the transitionFe Al alloy and confirmed that the L1g ordered structure is stabilized by aluminium. However STUDY OF ORDER-DISORDER REACTION IN ft Ni3 FeQ 7 6 A l Q 2 4 ALLOY BY MEANS OF ATOM-PROBE TECHNIQUES D

  13. Bose-Einstein condensation of a quantum group gas

    E-Print Network [OSTI]

    Marcelo R. Ubriaco

    1997-10-10T23:59:59.000Z

    We study the Bose-Einstein condensation of a gas with $SU_q(2)$ symmetry. We show, in the thermodynamic limit, that the boson interactions introduced by the quantum group symmetries enhance Bose-Einstein condensation giving a discontinuity in the heat capacity $C_v$ at the critical temperature $T_c$. The critical temperature and the gap in $C_v$ increase with the value of the parameter $q$ and become approximately constant for $q>3$.

  14. Suppression of excited-state effects in lattice determination of nucleon electromagnetic form factors

    E-Print Network [OSTI]

    G. M. von Hippel; S. Capitani; D. Djukanovic; J. Hua; B. Jäger; P. Junnarkar; H. B. Meyer; T. D. Rae; H. Wittig

    2014-11-18T23:59:59.000Z

    We study the ability of a variety of fitting techniques to extract the ground state matrix elements of the vector current from ratios of nucleon three- and two-point functions that contain contaminations from excited states. Extending our high-statistics study of nucleon form factors, we are able to demonstrate that the treatment of excited-state contributions in conjunction with approaching the physical pion mass has a significant impact on the $Q^2$-dependence of the form factors.

  15. Infrared exponents and the strong-coupling limit in lattice Landau gauge

    E-Print Network [OSTI]

    Andre Sternbeck; Lorenz von Smekal

    2010-04-09T23:59:59.000Z

    We study the gluon and ghost propagators of lattice Landau gauge in the strong-coupling limit beta=0 in pure SU(2) lattice gauge theory to find evidence of the conformal infrared behavior of these propagators as predicted by a variety of functional continuum methods for asymptotically small momenta $q^2 \\ll \\Lambda_\\mathrm{QCD}^2$. In the strong-coupling limit, this same behavior is obtained for the larger values of a^2q^2 (in units of the lattice spacing a), where it is otherwise swamped by the gauge field dynamics. Deviations for a^2q^2 < 1 are well parameterized by a transverse gluon mass $\\propto 1/a$. Perhaps unexpectedly, these deviations are thus no finite-volume effect but persist in the infinite-volume limit. They furthermore depend on the definition of gauge fields on the lattice, while the asymptotic conformal behavior does not. We also comment on a misinterpretation of our results by Cucchieri and Mendes in Phys. Rev. D81 (2010) 016005.

  16. Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

    E-Print Network [OSTI]

    ZEUS collaboration; H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R. Aggarwal; S. Antonelli; O. Arslan; V. Aushev; Y. Aushev; O. Bachynska; A. N. Barakbaev; N. Bartosik; O. Behnke; J. Behr; U. Behrens; A. Bertolin; S. Bhadra; I. Bloch; V. Bokhonov; E. G. Boos; K. Borras; I. Brock; R. Brugnera; A. Bruni; B. Brzozowska; P. J. Bussey; A. Caldwell; M. Capua; C. D. Catterall; J. Chwastowski; J. Ciborowski; R. Ciesielski; A. M. Cooper-Sarkar; M. Corradi; F. Corriveau; G. D'Agostini; R. K. Dementiev; R. C. E. Devenish; G. Dolinska; V. Drugakov; S. Dusini; J. Ferrando; J. Figiel; B. Foster; G. Gach; A. Garfagnini; A. Geiser; A. Gizhko; L. K. Gladilin; O. Gogota; Yu. A. Golubkov; J. Grebenyuk; I. Gregor; G. Grzelak; O. Gueta; M. Guzik; W. Hain; G. Hartner; D. Hochman; R. Hori; Z. A. Ibrahim; Y. Iga; M. Ishitsuka; A. Iudin; F. Januschek; I. Kadenko; S. Kananov; T. Kanno; U. Karshon; M. Kaur; P. Kaur; L. A. Khein; D. Kisielewska; R. Klanner; U. Klein; N. Kondrashova; O. Kononenko; Ie. Korol; I. A. Korzhavina; A. Kota?ski; U. Kötz; N. Kovalchuk; H. Kowalski; O. Kuprash; M. Kuze; B. B. Levchenko; A. Levy; V. Libov; S. Limentani; M. Lisovyi; E. Lobodzinska; W. Lohmann; B. Löhr; E. Lohrmann; A. Longhin; D. Lontkovskyi; O. Yu. Lukina; J. Maeda; I. Makarenko; J. Malka; J. F. Martin; S. Mergelmeyer; F. Mohamad Idris; K. Mujkic; V. Myronenko; K. Nagano; A. Nigro; T. Nobe; D. Notz; R. J. Nowak; K. Olkiewicz; Yu. Onishchuk; E. Paul; W. Perla?ski; H. Perrey; N. S. Pokrovskiy; A. S. Proskuryakov; M. Przybycie?; A. Raval; P. Roloff; I. Rubinsky; M. Ruspa; V. Samojlov; D. H. Saxon; M. Schioppa; W. B. Schmidke; U. Schneekloth; T. Schörner-Sadenius; J. Schwartz; L. M. Shcheglova; R. Shehzadi; R. Shevchenko; O. Shkola; I. Singh; I. O. Skillicorn; W. S?omi?ski; V. Sola; A. Solano; A. Spiridonov; L. Stanco; N. Stefaniuk; A. Stern; T. P. Stewart; P. Stopa; J. Sztuk-Dambietz; D. Szuba; J. Szuba; E. Tassi; T. Temiraliev; K. Tokushuku; J. Tomaszewska; A. Trofymov; V. Trusov; T. Tsurugai; M. Turcato; O. Turkot; T. Tymieniecka; A. Verbytskyi; O. Viazlo; R. Walczak; W. A. T. Wan Abdullah; K. Wichmann; M. Wing; G. Wolf; S. Yamada; Y. Yamazaki; N. Zakharchuk; A. F. ?arnecki; L. Zawiejski; O. Zenaiev; B. O. Zhautykov; N. Zhmak; D. S. Zotkin

    2014-10-21T23:59:59.000Z

    The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q^2 < 1000 GeV^2 using an integrated luminosity of 354 pb^{-1}. The beauty and charm content in events with at least one jet have been extracted using the invariant mass of charged tracks associated with secondary vertices and the decay-length significance of these vertices. Differential cross sections as a function of Q^2, Bjorken x, jet transverse energy and pseudorapidity were measured and compared with next-to-leading-order QCD calculations. The beauty and charm contributions to the proton structure functions were extracted from the double-differential cross section as a function of x and Q^2. The running beauty-quark mass, m_b at the scale m_b, was determined from a QCD fit at next-to-leading order to HERA data for the first time and found to be 4.07 \\pm 0.14 (fit} ^{+0.01}_{-0.07} (mod.) ^{+0.05}_{-0.00} (param.) ^{+0.08}_{-0.05} (theo) GeV.

  17. Up- and down-quark masses from finite-energy QCD sum rules to five loops

    SciTech Connect (OSTI)

    Dominguez, C. A.; Nasrallah, N. F.; Roentsch, R. H.; Schilcher, K. [Centre for Theoretical Physics and Astrophysics, University of Cape Town, Rondebosch 7700 (South Africa) and Department of Physics, Stellenbosch University, Stellenbosch 7600 (South Africa); Faculty of Science, Lebanese University, Tripoli (Lebanon); Centre for Theoretical Physics and Astrophysics, University of Cape Town, Rondebosch 7700 (South Africa); Institut fuer Physik, Johannes Gutenberg-Universitaet, Staudingerweg 7, D-55099 Mainz (Germany)

    2009-01-01T23:59:59.000Z

    The up- and down-quark masses are determined from an optimized QCD finite-energy sum rule involving the correlator of axial-vector divergences, to five-loop order in perturbative QCD, and including leading nonperturbative QCD and higher order quark-mass corrections. This finite-energy sum rule is designed to reduce considerably the systematic uncertainties arising from the (unmeasured) hadronic resonance sector, which in this framework contributes less than 3-4% to the quark mass. This is achieved by introducing an integration kernel in the form of a second degree polynomial, restricted to vanish at the peak of the two lowest lying resonances. The driving hadronic contribution is then the pion pole, with parameters well known from experiment. The determination is done in the framework of contour improved perturbation theory, which exhibits a very good convergence, leading to a remarkably stable result in the unusually wide window s{sub 0}=1.0-4.0 GeV{sup 2}, where s{sub 0} is the radius of the integration contour in the complex energy (squared) plane. The results are m{sub u}(Q=2 GeV)=2.9{+-}0.2 MeV, m{sub d}(Q=2 GeV)=5.3{+-}0.4 MeV, and (m{sub u}+m{sub d})/2=4.1{+-}0.2 MeV (at a scale Q=2 GeV)

  18. 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

    2013-10-01T23:59:59.000Z

    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.

  19. Color transparency after the NE18 and E665 experiments: Outllok and perspectives at CEBAF

    E-Print Network [OSTI]

    J. Nemchik; N. N. Nikolaev; B. G. Zakharov

    1994-06-06T23:59:59.000Z

    CEBAF is a high-luminocity factory of virtual photons with variable virtuality $Q^{2}$ and transverse size. This makes CEBAF, in particular after the energy upgrade to (8-12)GeV, an ideal facility for uncovering new phenomena, and opening new windows, at the interface of the perturbative and nonperturbative QCD. We discuss color transparency as the case for a broad program on electroproduction of vector mesons $\\rho^{0},\\,\\omega^{0},\\,\\phi^{0}$ and their radial excitations $\\rho',\\,\\omega',\\,\\phi'$ at CEBAF. We also comment on the second generation of experiments on color transparency in $^{4}He(e,e'p)$ scattering, which are also feasible at CEBAF. In 1994, we can make more reliable projections into future because our understanding of the onset of color transparency has greatly been augmented by two experiments completed in 1993:\\\\ i) no effect of CT was seen in the SLAC NE18 experiment on $A(e,e'p)$ scattering at virtualities of the exchanged photon $Q^{2} \\lsim 7$ GeV$^{2}$, \\\\ ii) strong signal of CT was observed in the FNAL E665 experiment on exclusive $\\rho^{0}$- meson production in deep inelastic scattering in the same range of $Q^{2}$. \\\\ We discuss the impact of these observations on the CEBAF experimental program. We argue they both are good news, both were anticipated theoretically, and both rule in the correct QCD mechanism of the onset of CT.

  20. 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

    2014-11-25T23:59:59.000Z

    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$^2$.

  1. 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

    2012-09-24T23:59:59.000Z

    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.

  2. Electric Fields and Chiral Magnetic Effect in Cu + Au Collisions

    E-Print Network [OSTI]

    Wei-Tian Deng; Xu-Guang Huang

    2015-02-16T23:59:59.000Z

    The non-central Cu + Au collisions can create strong out-of-plane magnetic fields and in-plane electric fields. By using the HIJING model, we study the general properties of the electromagnetic fields in Cu + Au collisions at 200 GeV and their impacts on the charge-dependent two-particle correlator $\\gamma_{q_1q_2}=$ (see main text for definition) which was used for the detection of the chiral magnetic effect (CME). Compared with Au + Au collisions, we find that the in-plane electric fields in Cu + Au collisions can strongly suppress the two-particle correlator or even reverse its sign if the lifetime of the electric fields is long. Combining with the expectation that if $\\gamma_{q_1q_2}$ is induced by elliptic-flow driven effects we would not see such strong suppression or reversion, our results suggest to use Cu + Au collisions to test CME and understand the mechanisms that underlie $\\gamma_{q_1q_2}$.

  3. Delta Electroproduction in 12-C

    SciTech Connect (OSTI)

    Steven McLauchlan

    2003-01-31T23:59:59.000Z

    The Delta-nucleus potential is a crucial element in the understanding of the nuclear system. Previous electroexcitation measurements in the delta region reported a Q2 dependence of the delta mass indicating that this potential is dependent on the momentum of the delta. Such a dependence is not observed for protons and neutrons in the nuclear medium. This thesis presents the experimental study of the electroexcitation of the delta resonance in 12C, performed using the high energy electron beam at the Thomas Jefferson National Accelerator Facility, and the near 4(pie) acceptance detector CLAS that enables the detection of the full reaction final state. Inclusive, semi inclusive, and exclusive cross sections were measured with an incident electron beam energy of 1.162GeV over the Q2 range 0.175-0.475 (GeV/c)2. A Q2 dependence of the delta mass was only observed in the exclusive measurements indicating that the delta-nucleus potential is affected by the momentum of the delta.

  4. 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

    2015-02-09T23:59:59.000Z

    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.

  5. 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

    2015-02-01T23:59:59.000Z

    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

  6. Measurement of the Nucleon Structure Function F2 in the Nuclear Medium and Evaluation of its Moments

    SciTech Connect (OSTI)

    M. Osipenko

    2010-11-01T23:59:59.000Z

    We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W~2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5 GeV2. These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q2-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F2 moments exhibits the well known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainites, to be smaller with respect to the deuteron case for n<7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.

  7. 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; Amaryan, M; Anderson, M; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Battaglieri, M.; Bedlinskiy, I.; Biselli, A; Bono, J.; Boiarinov, S.; Briscoe, W; Burkert, V; Carman, D; Careccia, S.; Celentano, A.; Chandavar, S.; Charles, G.; Colaneri, L.; Cole, P; Contalbrigo, M.; Crede, V.; D'Angelo, A; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Dodge, G; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Filippi, A.; Fleming, J; Fradi, A.; Garillon, B.; Gilfoyle, G; Giovanetti, K; Girod, F; Goetz, J; Gohn, W.; Golovatch, E.; Gothe, R; Griffioen, K; Guegan, B.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Harrison, N.; Hattawy, M.; Hicks, K.; Holtrop, M.; Hughes, S; Hyde, C E; Ilieva, Y.; Ireland, D; Ishkhanov, B; Jenkins, D.; Jiang, H.; Jo, H; Joo, K.; Joosten, S.; Kalantarians, N.; Keller, D.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F; Koirala, S.; Kubarovsky, V.; Kuhn, S; Livingston, K.; Lu, H; MacGregor, I; Markov, N.; Mattione, P.; Mayer, M.; McKinnon, B.; Mestayer, M; Meyer, C; Mirazita, M.; Mokeev, V.; Montgomery, R; Moody, C; Moutarde, H.; Movsisyan, A.; Camacho, C. Munoz; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; Osipenko, M.; Ostrovidov, A; Park, K.; Pasyuk, E.; Pisano, S.; Pogorelko, O.; Price, J; Procureur, S.; Prok, Y.; Protopopescu, D.; Puckett, A; Ripani, M.; Rizzo, A.; Rosner, G.; Rossi, P.; Roy, P.; Sabati, F; Salgado, C.; Schott, D.; Schumacher, R; Seder, E.; Sharabian, Y; Simonyan, A.; Skorodumina, I.; Smith, E; Smith, G; Sober, D; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Stoler, P.; Strauch, S.; Sytnik, V.; Taiuti, M.; Tian, Ye; Trivedi, A.; Ungaro, M.; Voskanyan, H.; Voutier, E.; Walford, N; Watts, D; Wei, X.; Wood, M; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z; Zonta, I.

    2015-02-10T23:59:59.000Z

    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 momentum 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.

  8. 3Q/4Q00 Annual M-Area and Metallurgical Laboratory Hazardous Waste Management Facilities Groundwater Monitoring and Corrective-Action Report - Third and Fourth Quarters 2000 - Volumes I, II, and II

    SciTech Connect (OSTI)

    Cole, C.M. Sr.

    2001-04-17T23:59:59.000Z

    This report describes the groundwater monitoring and corrective-action program at the M-Area Hazardous Waste Management Facility (HWMF) and the Metallurgical Laboratory (Met Lab) HWMF at the Savannah River Site (SRS) during 2000. This program is required by South Carolina Resource Conservation and Recovery Act (RCRA) Hazardous Waste Permit SC1890008989 and Section 264.100(g) of the South Carolina Hazardous Waste Management Regulations.

  9. 3Q/4Q99 Annual M-Area and Metallurgical Laboratory Hazardous Waste Management Facilities Groundwater Monitoring and Corrective-Action Report - Third and Fourth Quarters 1999 - Volumes I, II, and III

    SciTech Connect (OSTI)

    Chase, J.

    2000-04-19T23:59:59.000Z

    This report describes the groundwater monitoring and corrective-action program at the M-Area Hazardous Waste Management Facility (HWMF) and the Metallurgical Laboratory (Met Lab) HWMF at the Savannah River Site (SRS) during 1999.

  10. On The Injection Spectrum of Ultrahigh Energy Cosmic Rays in the Top-Down Scenario

    E-Print Network [OSTI]

    Rahul Basu; Pijushpani Bhattacharjee

    2004-05-13T23:59:59.000Z

    We analyze the uncertainties involved in obtaining the injection spectra of UHECR particles in the top-down scenario of their origin. We show that the DGLAP $Q^2$ evolution of fragmentation functions (FF) to $Q=M_X$ (mass of the X particle) from their initial values at low $Q$ is subject to considerable uncertainties. We therefore argue that, for $x\\lsim 0.1$ (the $x$ region of interest for most large $M_X$ values of interest, $x\\equiv 2E/M_X$ being the scaled energy variable), the FF obtained from DGLAP evolution is no more reliable than that provided, for example, by a simple Gaussian form (in the variable $\\ln(1/x)$) obtained under the Modified Leading Log Approximation (MLLA). Additionally, we find that for $x\\gsim0.1$, the evolution in $Q^2$ of the singlet FF, which determines the injection spectrum, is ``minimal'' -- the singlet FF changes by barely a factor of 2 after evolving it over $\\sim$ 14 orders of magnitude in $Q\\sim M_X$. We, therefore, argue that as long as the measurement of the UHECR spectrum above $\\sim10^{20}\\ev$ is going to remain uncertain by a factor of 2 or larger, it is good enough for most practical purposes to directly use any one of the available initial parametrisations of the FFs in the $x$ region $x\\gsim0.1$ based on low energy data even without evolving them to the requisite $Q^2$ value.

  11. MEASUREMENT OF THE STRANGE QUARK CONTRIBUTION TO THE VECTOR STRUCTURE OF THE PROTON

    SciTech Connect (OSTI)

    Sarah Phillips

    2007-11-30T23:59:59.000Z

    The goal of the G0 experiment is to determine the contribution of the strange quarks in the quark-antiquark sea to the structure of the nucleon. To this end, the experiment measured parityviolating asymmetries from elastic electron-proton scattering from 0.12 ? Q2 ? 1.0 (GeV/c)2 at Thomas Jefferson National Accelerator Facility. These asymmetries come from the interference of the electromagnetic and neutral weak interactions, and are sensitive to the strange quark contributions in the proton. The results from the forward-angle measurement, the linear combination of the strange electric and magnetic form factors GsE +?GsM, suggest possible non-zero, Q2 dependent, strange quark contributions and provide new information to understand the magnitude of the contributions. This dissertation presents the analysis and results of the forward-angle measurement. In addition, the G0 experiment measured the beam-normal single-spin asymmetry in the elastic scattering of transversely polarized 3 GeV electrons from unpolarized protons at Q2 = 0.15, 0.25 (GeV/c)2 as part of the forward-angle measurement. The transverse asymmetry provides a direct probe of the imaginary component of the two-photon exchange amplitude, the complete description of which is important in the interpretation of data from precision electron-scattering experiments. The results of the measurement indicate that calculations using solely the elastic nucleon intermediate state are insufficient and generally agree with calculations that include significant inelastic hadronic intermediate state contributions. This dissertation presents the analysis and results of this measurement.

  12. Virtual Photon Emission from Quark-Gluon Plasma

    E-Print Network [OSTI]

    S. V. Suryanarayana

    2007-04-28T23:59:59.000Z

    We recently proposed an empirical approach for the Landau-Pomeranchuk-Migdal (LPM) effects in photon emission from the quark gluon plasma as a function of photon mass. This approach was based on Generalized Emission Functions (GEF) for photon emission, derived at a fixed temperature and strong coupling constant. In the present work, we have extended the LPM calculations for several temperatures and strong coupling strengths. The integral equations for (${\\bf \\tilde{f}(\\tilde{p}_\\perp)}$) and ($\\tilde{g}({\\bf \\tilde{p}_\\perp})$) are solved by the iterations method for the variable set \\{$p_0,q_0,Q^2,T,\\alpha_s$\\}, considering bremsstrahlung and $\\bf aws$ processes. We generalize the dynamical scaling variables, $x_T$, $x_L$, for bremsstrahlung and {\\bf aws} processes which are now functions of variables $p_0,q_0,Q^2,T,\\alpha_s$. The GEF introduced earlier, $g^b_T$, $g^a_T$, $g^b_L$, $g^a_L$, are also generalized for any temperatures and coupling strengths. From this, the imaginary part of the photon polarization tensor as a function of photon mass and energy can be calculated as a one dimensional integral over these GEF and parton distribution functions in the plasma. However, for phenomenological studies of experimental data, one needs a simple empirical formula without involving parton momentum integrations. Therefore, we present a phenomenological formula for imaginary photon polarization tensor as a function of \\{$q_0,Q^2,T,\\alpha_s$\\} that includes bremsstrahlung and $\\bf aws$ mechanisms along with LPM effects.

  13. Spin physics with CLAS and CLAS12

    SciTech Connect (OSTI)

    Angela Biselli

    2011-10-01T23:59:59.000Z

    An extensive experimental program to measure the spin structure of the nucleon has been conducted in Hall B at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) in the last decade. Using a longitudinally polarized beam scattering off longitudinally polarized NH3 and ND3 targets, inclusive Deep Inelastic Scattering (DIS), Semi-Inclusive DIS (SIDIS) and DVCS experiments were carried out that make a significant contributions to the existing data. The inclusive double spin asymmetry A|| was measured over a large range in Q2 and W, providing data of impressively high precision that give a better understanding of the structure of the nucleon in the DIS and the valence quarks regions. Using parameterizations A2 and F1 from world data, the virtual photon asymmetry A1 and the structure function g1 were extracted in a Q2 range from 0.05 to 5 GeV2 and a W range from 1.08 to 3.0 GeV. As a result of the extended kinematical range, first moments of structure functions were measured over a large range in Q2 and duality was tested. Furthermore, newly proposed experiments, using an upgraded accelerator at Jefferson Laboratory and an improved CLAS detector (CLAS12), are expected to increase the statistical precision of the current measurements and extend them to kinematic regions presently not accessible, such as high x. This will improve significantly our knowledge of the structure of the nucleon, including parton distribution functions, duality and higher twists contributions.

  14. Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to High Momentum Transfer

    SciTech Connect (OSTI)

    Andrew Puckett

    2010-02-01T23:59:59.000Z

    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.

  15. Learning From Real Springs

    E-Print Network [OSTI]

    Bassichis, William

    2013-01-29T23:59:59.000Z

    extension using the model potential energy and equating the energy with the body at rest at y 0 with the energy at Yrriax 01W has Cl 2ky+ Vrnax + (2 ? I1IIU!Jrnar (6) with the solution rn1q?3 / m1q? 2 /3S / (35 - Yrna k2V k2 (i) Thus the effect... to the bottorri involves such a force. W. Bassichis, ?Don?t Panic? (OR Publishing, New York 2005) 6 Figure Captions Fig.1. For the ideaL massless spring Hooke?s Law holds and IF! = rng = ky,,,. with m the mass of the object hung from the spring. Because...

  16. Improved computational methods for asynchronous state assignment by the Tracey method

    E-Print Network [OSTI]

    Raiford, Robert Charles

    1974-01-01T23:59:59.000Z

    must be formed thus requiring [q(q ? 1)/2] . 2 . 2 = 60 operations. These sums must be tested for validity (null sets and redundancies must be eliminated). This test requires q(q ? 1) or 30 operations to determine the 7 closed dichotomies in Table...) 2 ~ f ( - I) 2 ] = q(q - I). In addition to the summing operations, each entry in the pair chart had to be checked to determine whether a dichotomy sum was to be formed or ( -i) Tht dd y h 2 3 ? 3 t 3q(3q/2 - 3)/2 2 operations depending...

  17. Measurement of Delta G/G from high transverse momentum hadron pairs in COMPASS

    E-Print Network [OSTI]

    Marcin Stolarski

    2008-09-10T23:59:59.000Z

    The new COMPASS Delta G/G result obtained from high transverse momentum hadron pairs in the Q^2>1 GeV^2 region is presented. Comparing to the previous analysis in this region the statistical error of Delta G/G is reduced by a factor 3 to 0.10. A weighted method of the Delta G/G measurement based on neural network approach is used. In addition, the formula for the Delta G/G extraction used in the analysis has been updated. The contributions coming from the leading order and QCD Compton processes are no longer neglected.

  18. Valence Quarks Polarization from COMPASS

    E-Print Network [OSTI]

    A. Korzenev

    2007-04-26T23:59:59.000Z

    A first evaluation of the polarized valence quark distribution $\\Delta u_v(x)+\\Delta d_v(x)$ from the COMPASS experiment (CERN/SPS) is presented. The data were collected by COMPASS in the years 2002--2004 using a 160 GeV polarized muon beam scattered off a large polarized $^6$LiD target and cover the range $1< Q^2 < 100$ GeV$^2$ and $0.006

  19. Synthesis of some †-lactams via enolate-imine reactions

    E-Print Network [OSTI]

    McElveen, Margaret Lynn

    1978-01-01T23:59:59.000Z

    acetyl chlorides in the presence of a nitrogen base (Figure 2), ' and in many g-lactam forming reactions ketenes are 9, 10 generated in situ. The ketene mechanism shown in Figure 2 is assumed to be a dipolar cycloaddition initiated by attack... Figure 9). Imine Q2 was prepared from neat acetaldehyde and ethylamine according to the procedure of Tiollais. 31 0 PhH I C=N ? R Figure 8. Synthesis of starting imines. CsHs~-NH-CsHs 29 H+) S0e 10&NaOH f Ph CaH5 l=N CeH& 27 +CHa CsHs- =N...

  20. 11 May 2000 Z .Physics Letters B 480 2000 337347

    E-Print Network [OSTI]

    Logan, David

    J AA I J J I T 't z E yz E ,AA q Z .qy2 w x .I PPP I Z AAy I I I1 q 1 qy1 q2U 'i i t z PPP z E ,Z . 2AA qs3, . . . , Nq1 , p Z .py2 w x .I PPP I Z AAy I I1 p 1 p2R ' i t z PPP z E ,Z . 2AA t ps2, not all of the generators appear. For example, TI J and RI1 PPP Ip only appear for super-AA AA spaces

  1. 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

    2014-10-13T23:59:59.000Z

    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.

  2. A radiation-hardened, low-noise, high-speed, integrated charge preamplifier for the Superconducting Supercollider

    E-Print Network [OSTI]

    Ling, Kuok Young

    1989-01-01T23:59:59.000Z

    be fulfilled with the speed that is attainable with the bipola. r devices. The fz (the unity current gain frequency or transition frequency) for the P- JFETs of this particular junction ? isolated BiFET process is about 80 MHz and Table H. Nominal bipolar... in Fig. 8. The resistor r, represents the equivalent emitter resistance of transistor Q2 that forms the common? base stage and it can be expressed as: 1 I I re gm2 + I/rx gm2(1 + 1(FSN) gm2 (8 I) where g 2 is the tzansconductance and r...

  3. Measurement of the Proton's Neutral Weak Magnetic Form Factor

    E-Print Network [OSTI]

    B. Mueller; D. H. Beck; E. J. Beise; E. Candell; L. Cardman; R. Carr; R. C. DiBari; G. Dodson; K. Dow; F. Duncan; M. Farkhondeh; B. W. Filippone; T. Forest; H. Gao; W. Korsch; S. Kowalski; A. Lung; R. D. McKeown; R. Mohring; J. Napolitano; D. Nilsson; M. Pitt; N. Simicevic; B. Terburg; S. P. Wells

    1997-02-26T23:59:59.000Z

    We report the first measurement of the parity-violating asymmetry in elastic electron scattering from the proton. The asymmetry depends on the neutral weak magnetic form factor of the proton which contains new information on the contribution of strange quark-antiquark pairs to the magnetic moment of the proton. We obtain the value $G_M^Z= 0.34 \\pm 0.09 \\pm 0.04 \\pm 0.05$ n.m. at $Q^2=0.1$ (GeV/c)${}^2$.

  4. New measurements of the EMC effect in very light nuclei

    E-Print Network [OSTI]

    Seely, J; Gaskell, D; Arrington, J; Fomin, N; Solvignon, P; Asaturyan, R; Benmokhtar, F; Boeglin, W; Boillat, B; Bosted, P; Brüll, A; Bukhari, M H S; Christy, M E; Clasie, B; Connell, S; Dalton, M; Day, D; Dunne, J; Dutta, D; Fassi, L El; Ent, R; Fenker, H; Filippone, B W; Gao, H; Hill, C; Holt, R J; Horn, T; Hungerford, E; Jones, M K; Jourdan, J; Kalantarians, N; Keppel, C E; Kiselev, D; Kotulla, M; Lee, C; Lung, A F; Malace, S; Meekins, D G; Mertens, T; Mkrtchyan, H; Navasardyan, T; Niculescu, G; Niculescu, I; Nomura, H; Okayasu, Y; Opper, A K; Perdrisat, C; Potterveld, D H; Punjabi, V; Qian, X; Reimer, P E; Roche, J; Rodriguez, V M; Rondon, O; Schulte, E; Segbefia, E; Slifer, K; Smith, G R; Tadevosyan, V; Tajima, S; Tang, L; Testa, G; Trojer, R; Tvaskis, V; Villano, A; Vulcan, W F; Wesselmann, F R; Wood, S A; Wright, J; Yuan, L; Zheng, X

    2009-01-01T23:59:59.000Z

    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.

  5. 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

    2000-01-01T23:59:59.000Z

    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.

  6. 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

    2009-10-27T23:59:59.000Z

    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.

  7. Short Range Correlations in Nuclei at Large xbj through Inclusive Quasi-Elastic Electron Scattering

    SciTech Connect (OSTI)

    Ye, Zhihong [UVA

    2013-12-01T23:59:59.000Z

    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

  8. Obtaining information on short-range correlations from inclusive electron scattering

    E-Print Network [OSTI]

    Claudio Ciofi degli Atti; Chiara Benedetta Mezzetti

    2009-05-19T23:59:59.000Z

    In view of recent data from the Thomas Jefferson National Accelerator Facility (JLab) on inclusive electron scattering off nuclei at high momentum transfer (Q^2 > 1 GeV^2) and their current analysis, it is shown that, if the scaling variable is properly chosen, the analysis in terms of scaling functions can provide useful information on Short Range Correlations (SRC). This is demonstrated by introducing a new relativistic scaling variable that incorporates the momentum dependence of the excitation energy of the (A-1)system, with the resulting scaling function being closely related to the longitudinal momentum distributions.

  9. Suction recirculation and its effects upon axial-flow pump power consumption 

    E-Print Network [OSTI]

    Prince, Tony M.

    1983-01-01T23:59:59.000Z

    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...

  10. 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

    2007-12-12T23:59:59.000Z

    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.

  11. Generalized dynamical thermostating technique

    E-Print Network [OSTI]

    Laird, Brian Bostian; Leimkuhler, Benedict J.

    2003-07-29T23:59:59.000Z

    EXTENDED NOSE´ THERMOSTAT In this section, we show that the Nose´ approach ~and its corresponding real-time version—Nose´-Poincare´! is only the simplest realization of a vast range of generalized thermo- stating Hamiltonians. In particular, we show below... reason for the difficulty encountered in thermo- stating molecular systems with stiff bonds that are weakly coupled to the rest of the system @10#. The unthermostated Hamiltonian for this system is H ~ p ,q !5 p2 2 1 q2 2 , where we have assumed unit mass...

  12. Distribution of Energy-Momentum in a Schwarzschild-Quintessence Space-time Geometry

    E-Print Network [OSTI]

    Irina Radinschi; Theophanes Grammenos; Andromahi Spanou

    2012-04-07T23:59:59.000Z

    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. Multipole Extraction: A novel, model independent method

    E-Print Network [OSTI]

    E. Stiliaris; C. N. Papanicolas

    2007-03-20T23:59:59.000Z

    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.

  14. Multipole approach for photo- and electroproduction of kaon

    E-Print Network [OSTI]

    T. Mart; A. Sulaksono

    2007-01-03T23:59:59.000Z

    We have analyzed the experimental data on K+Lambda photoproduction by using a multipole approach. In this analysis we use the background amplitudes constructed from appropriate Feynman diagrams in a gauge-invariant and crossing-symmetric fashion. Results of our analysis reveal the problem of mutual consistency between the new SAPHIR and CLAS data. We found that the problem could lead to different conclusions on ``missing resonances''. We have also extended our analysis to the finite Q^2 region and compared the result with the corresponding electroproduction data.

  15. Cleanable and Hardcoat Coatings for Increased Durability of Silvered Polymeric Mirrors

    SciTech Connect (OSTI)

    Padiyath, Raghunath

    2013-04-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    McCann, Barrett Taylor

    1996-01-01T23:59:59.000Z

    . Figures 9-11 compare the effectiveness of each preconditioner in accelerating convergence for single-grid and 4-level multigrid algorithms. These plots again show that, while the block-Jacobi preconditioner provides definite improvement over the system... = 20', M = 0. 1, second-order solver, p = 2, q = 2. Solid: Euler; Dashed: Turkel; Dash-Dot: Block-Jacobi. a) 1 grid level and b) 4 grid levels. 36 10 Preconditioner effectiveness: periodic boundaries, 64x32 square grid, a = 20', M = 0. 1, second...

  17. Saturated absorption at nanowatt power levels using metastable xenon in a high-finesse optical cavity

    E-Print Network [OSTI]

    G. T. Hickman; T. B. Pittman; J. D. Franson

    2014-09-19T23:59:59.000Z

    Strong saturated absorption at nanowatt power levels has been demonstrated using metastable xenon in a high-finesse optical cavity. The use of metastable xenon allows a high quality factor of Q=2*10^8 to be achieved at relatively high atomic densities without any contamination or damage to the optical surfaces, which is often a problem when using high-density rubidium or other alkali atoms. This technique provides a relatively straightforward way to produce nonlinearities at the single-photon level with possible applications in quantum communications and computing.

  18. Applications of algebraic geometry to object/image recognition

    E-Print Network [OSTI]

    Abbott, Kevin Toney

    2009-06-02T23:59:59.000Z

    [12]). 8 4 An image of the jet in Fig. 3 generated by the focal point projec- tion (modified from [12]). . . . . . . . . . . . . . . . . . . . . . . . . 9 5 T(P) +T(Q) and T(P +Q) drawn in the plane A = {(x,y,z)|x = 0}. 14 6 The line m through.... 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...

  19. On the Boltzmann equation, quantitative studies and hydrodynamical limits

    E-Print Network [OSTI]

    Briant, Marc

    2014-11-11T23:59:59.000Z

    the average dynamics of systems (sea or car traffic for example). It however comes with the drawback that is the loss of the microscopic dynamics inside the system. Kinetic theory stands right between the microscopic and the macroscopic scale, it is called... (z) = q 2 4pi?0 |z| , where q is the electric charge of a particle and ?0 is the vacuum permittivity. Our work will, however, be about another way of modelling interactions between par- - 15 - 1 Introduction ticles. In that case, the range...

  20. Proton and Neutron Momentum Distributions in A = 3 Asymmetric Nuclei

    E-Print Network [OSTI]

    O. Hen; L. B. Weinstein; S. Gilad; W. Boeglin

    2014-10-16T23:59:59.000Z

    A proposal approved by the Jefferson Lab (JLab) PAC to study the proton-to-neutron momentum distribution ratio in A=3 nuclei via (e,e'p) scattering off 3He and 3H mirror nuclei. The experiment will measure the 3H(e,e'p) and 3He(e,e'p) cross-sections and cross-section ratios at Q2 = 2 and xB>1 kinematics, over a missing momentum range of 0 - 450 MeV/c. The experiment was approved in 2014 at part of the JLab Hall-A Tritium run period for a total run time of 12 days.

  1. Photon bremsstrahlung and diffusive broadening of a hard jet

    E-Print Network [OSTI]

    Majumder, A.; Fries, Rainer J.; Mueller, B.

    2008-01-01T23:59:59.000Z

    contributions compared to the longitudinal components of the momenta, q? and q? ? l?. Using the well-known relations between the various ? matrices, such as ???? = 0, {??, ??} = 21 (where 1 is the unit matrix in spinor space), and the anticommutation rule... Physical Society A. MAJUMDER, R. J. FRIES, AND B. M ?ULLER PHYSICAL REVIEW C 77, 065209 (2008) shown to be related, up to overall constant factors, to the well-known jet transport coefficient q? [2]. It is the object of the current article to extend...

  2. The CJ12 parton distributions

    SciTech Connect (OSTI)

    Accardi, Alberto [JLAB; Owens, Jeff F. [Florida State U.

    2013-07-01T23:59:59.000Z

    Three new sets of next-to-leading order parton distribution functions (PDFs) are presented, determined by global fits to a wide variety of data for hard scattering processes. The analysis includes target mass and higher twist corrections needed for the description of deep-inelastic scattering data at large x and low Q^2, and nuclear corrections for deuterium targets. The PDF sets correspond to three different models for the nuclear effects, and provide a more realistic uncertainty range for the d quark PDF compared with previous fits. Applications to weak boson production at colliders are also discussed.

  3. Control system design for a parallel hybrid electric vehicle

    E-Print Network [OSTI]

    Buntin, David Leighton

    1994-01-01T23:59:59.000Z

    and possibly frequency settings. Finally, brake torque commands (Ts, ) must cause the appropriate displacement in the brake pads a. nd shoes. These considerations of the control requirements for the hybrid electric vehicle lead to the following need... of motion: =1 2 i' = (T + T ? Ts ? Tt) (rad)'sec ) J, q ('2. 1) Fquation 2. 1 leads to a definition of the drive shaft, speed (~) as the first state variable of tlie model. As it turiis out, Equation rhl is the mosi, dominant state equation...

  4. The design and operation of a combustion tube for investigation of combustion oil recovery

    E-Print Network [OSTI]

    Penberthy, Walter Lawren

    1965-01-01T23:59:59.000Z

    the formation toward the producing wells. Ignition may be the result of electrical or gas operated heaters; or may result from 9 spontaneous ignition as a result of oxidation of the crude oil. Ignition in this case usually results a short time after... gravity increased from 0 0 20. 08 to 26. 08 API. The average gravity of the produced oil was 600 x tu 0 4 N PRODUCED GAS RATE 500 400 O tJ Q 2 0 ss 0, INJE N PRESSURE 0 0 300 4l 200 PRODUCTION PRESSURE 100 0 8 RUN TIME, HOURS GAS...

  5. Leading proton production in deep inelastic scattering at HERA

    E-Print Network [OSTI]

    ZEUS Collaboration

    2008-12-12T23:59:59.000Z

    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.

  6. A computer program to solve the generalized geometric programming problem

    E-Print Network [OSTI]

    Edwards, Thomas Haines

    1969-01-01T23:59:59.000Z

    INTRODUCTION 1. 1 Engineering Design Optimization 1, 2 Mathematical Programming 1. 3 Development of Geometric Programming G OMETRIC PROGRA?1. 'NG 2. 1 Polynom. "al-1ihe Functions 2. 2 Necessary Conditions for Optimality 2. 3 Constrained Optima 2. 4... is acceptahle. Thus, from (2. 2, 2', (2. 2. 13) 172 AA &A q (2'&. AI C) 14 and (2. 2. I4) 2. 3 Constrained Optima The general temi!!, primal funct1on, denotes a posynom1al objective function plus ccnstra1nts in the form m=2, . . . M, where y is a...

  7. Multiplicities of charged pions and kaons from semi-inclusive deep-inelastic scattering by the proton and the deuteron

    E-Print Network [OSTI]

    Airapetian, A; Akopov, Z; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetissian, A; Avetisyan, E; Belostotski, S; Blok, H P; Borissov, A; Bowles, J; Brodski, I; Bryzgalov, V; Burns, J; Capiluppi, M; Capitani, G P; Cisbani, E; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; Deconinck, W; De Leo, R; De Nardo, L; De Sanctis, E; Diefenthaler, M; Di Nezza, P; Düren, M; Ehrenfried, M; Elbakian, G; Ellinghaus, F; Fabbri, R; Fantoni, A; Felawka, L; Frullani, S; Gabbert, D; Gapienko, G; Gapienko, V; Garibaldi, F; Gavrilov, G; Gharibyan, V; Giordano, F; Gliske, S; Golembiovskaya, M; Hadjidakis, C; Hartig, M; Hasch, D; Hillenbrand, A; Hoek, M; Holler, Y; Hristova, I; Imazu, Y; Ivanilov, A; Izotov, A; Jackson, H E; Jo, H S; Joosten, S; Kaiser, R; Karyan, G; Keri, T; Kinney, E; Kisselev, A; Kobayashi, N; Korotkov, V; Kozlov, V; Kravchenko, P; Krivokhijine, V G; Lagamba, L; Lapikás, L; Lehmann, I; Lenisa, P; Ruiz, A López; Lorenzon, W; Ma, B -Q; Mahon, D; Maiheu, B; Makins, N C R; Manaenkov, S I; Manfré, L; Mao, Y; Marianski, B; de la Ossa, A Martinez; Marukyan, H; Miller, C A; Miyachi, Y; Movsisyan, A; Murray, M; Mussgiller, A; Nappi, E; Naryshkin, Y; Nass, A; Negodaev, M; Nowak, W -D; Pappalardo, L L; Perez-Benito, R; Petrosyan, A; Raithel, M; Reimer, P E; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanftl, F; Schäfer, A; Schnell, G; Seitz, B; Shibata, T -A; Shutov, V; Stancari, M; Statera, M; Steffens, E; Steijger, J J M; Stewart, J; Stinzing, F; Taroian, S; Terkulov, A; Truty, R; Trzcinski, A; Tytgat, M; Van Haarlem, Y; Van Hulse, C; Veretennikov, D; Vilardi, I; Vogel, C; Wang, S; Yaschenko, S; Ye, Z; Yen, S; Yu, W; Zagrebelnyy, V; Zeiler, D; Zihlmann, B; Zupranski, P

    2012-01-01T23:59:59.000Z

    Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of \\pi^\\pm and K^\\pm mesons. The data were collected by the HERMES experiment at the HERA storage ring using 27.6 GeV electron and positron beams incident on a hydrogen or deuterium gas target. The results are presented as a function of the kinematic quantities x_B, Q^2, z, and P_h\\perp. They represent a unique data set for identified hadrons that will significantly enhance our understanding of the fragmentation of quarks into final-state hadrons in deep-inelastic scattering.

  8. Multiplicities of charged pions and kaons from semi-inclusive deep-inelastic scattering by the proton and the deuteron

    E-Print Network [OSTI]

    HERMES Collaboration; A. Airapetian; N. Akopov; Z. Akopov; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetisyan; S. Belostotski; H. P. Blok; A. Borissov; J. Bowles; I. Brodski; V. Bryzgalov; J. Burns; M. Capiluppi; G. P. Capitani; E. Cisbani; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; W. Deconinck; R. De Leo; L. De Nardo; E. De Sanctis; M. Diefenthaler; P. Di Nezza; M. Düren; M. Ehrenfried; G. Elbakian; F. Ellinghaus; R. Fabbri; A. Fantoni; L. Felawka; S. Frullani; D. Gabbert; G. Gapienko; V. Gapienko; F. Garibaldi; G. Gavrilov; V. Gharibyan; F. Giordano; S. Gliske; M. Golembiovskaya; C. Hadjidakis; M. Hartig; D. Hasch; A. Hillenbrand; M. Hoek; Y. Holler; I. Hristova; Y. Imazu; A. Ivanilov; A. Izotov; H. E. Jackson; H. S. Jo; S. Joosten; R. Kaiser; G. Karyan; T. Keri; E. Kinney; A. Kisselev; N. Kobayashi; V. Korotkov; V. Kozlov; P. Kravchenko; V. G. Krivokhijine; L. Lagamba; L. Lapikás; I. Lehmann; P. Lenisa; A. López Ruiz; W. Lorenzon; B. -Q. Ma; D. Mahon; B. Maiheu; N. C. R. Makins; S. I. Manaenkov; L. Manfré; Y. Mao; B. Marianski; A. Martinez de la Ossa; H. Marukyan; C. A. Miller; Y. Miyachi; A. Movsisyan; M. Murray; A. Mussgiller; E. Nappi; Y. Naryshkin; A. Nass; M. Negodaev; W. -D. Nowak; L. L. Pappalardo; R. Perez-Benito; A. Petrosyan; M. Raithel; P. E. Reimer; A. R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; J. Rubin; D. Ryckbosch; Y. Salomatin; F. Sanftl; A. Schäfer; G. Schnell; B. Seitz; T. -A. Shibata; V. Shutov; M. Stancari; M. Statera; E. Steffens; J. J. M. Steijger; J. Stewart; F. Stinzing; S. Taroian; A. Terkulov; R. Truty; A. Trzcinski; M. Tytgat; Y. Van Haarlem; C. Van Hulse; D. Veretennikov; I. Vilardi; C. Vogel; S. Wang; S. Yaschenko; Z. Ye; S. Yen; W. Yu; V. Zagrebelnyy; D. Zeiler; B. Zihlmann; P. Zupranski

    2013-04-24T23:59:59.000Z

    Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of \\pi^\\pm and K^\\pm mesons. The data were collected by the HERMES experiment at the HERA storage ring using 27.6 GeV electron and positron beams incident on a hydrogen or deuterium gas target. The results are presented as a function of the kinematic quantities x_B, Q^2, z, and P_h\\perp. They represent a unique data set for identified hadrons that will significantly enhance our understanding of the fragmentation of quarks into final-state hadrons in deep-inelastic scattering.

  9. Parity-Violating Electron Scattering from 4He and the Strange Electric Form Factor of the Nucleon

    E-Print Network [OSTI]

    Airapetian, A; Akopov, Z; Amarian, M; Ammosov, V V; Andrus, A; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetisian, A; Avetissian, E; Bailey, P; Balin, D; Baturin, V; Beckmann, M; Belostotskii, S; Bernreuther, S; Bianchi, N; Blok, H P; Böttcher, Helmut B; Borisov, A; Borysenko, A; Bouwhuis, M; Brack, J; Brüll, A; Bryzgalov, V; Capitani, G P; Chen, T; Chiang, H C; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Devitsin, E G; Di Nezza, P; Dreschler, J; Düren, M; Ehrenfried, M; Elalaoui-Moulay, A; Elbakian, G; Ellinghaus, F; Elschenbroich, U; Fabbri, R; Fantoni, A; Feshchenko, A; Felawka, L; Fox, B; Frullani, S; Gapienko, G; Gapienko, V; Garibaldi, F; Garrow, K; Garutti, E; Gaskell, D; Gavrilov, G; Karibian, V; Graw, G; Grebenyuk, O; Greeniaus, L G; Gregor, I M; Hafidi, K; Hartig, M; Hasch, D; Heesbeen, D; Henoch, M; Hertenberger, R; Hesselink, W H A; Hillenbrand, A; Hoek, M; Holler, Y; Hommez, B; Iarygin, G; Ivanilov, A; Izotov, A; Jackson, H E; Jgoun, A; Kaiser, R; Kinney, E; Kiselev, A; Kopytin, M; Korotkov, V; Kozlov, V; Krauss, B; Krivokhizhin, V G; Lagamba, L; Lapikas, L; Laziev, A; Lenisa, P; Liebing, P; Linden-Levy, L A; Lipka, K; Lorenzon, W; Lü, H; Lü, J; Lu, S; Ma, B Q; Maiheu, B; Makins, N C R; Mao, Y; Marianski, B; Marukyan, H; Masoli, F; Mexner, V; Meyners, N; Miklukho, O; Miller, C A; Miyachi, Y; Muccifora, V; Nagaitsev, A; Nappi, E; Naryshkin, Yu; Nass, A; Negodaev, M; Nowak, Wolf-Dieter; Oganessyan, K; Ohsuga, H; Pickert, N; Potashov, S Yu; Potterveld, D H; Raithel, M; Reggiani, D; Reimer, P E; Reischl, A; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanjiev, I; Savin, I; Schäfer, A; Schill, C; Schnell, G; Schüler, K P; Seele, J; Seidl, R; Seitz, B; Shanidze, R; Shearer, C; Shibata, T A; Shutov, V; Simani, M C; Sinram, K; Stancari, M; Statera, M; Steffens, E; Steijger, J J M; Stenzel, H; Stewart, J; Stinzing, F; Stösslein, U; Tait, P; Tanaka, H; Taroian, S P; Tchuiko, B; Terkulov, A R; Tkabladze, A; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van der Nat, P B; van der Steenhoven, G; Vetterli, M C; Vikhrov, V; Vincter, M G; Vogel, C; Vogt, M; Volmer, J; Weiskopf, C; Wendland, J; Wilbert, J; Ye, Y; Ye, Z; Yen, S; Zihlmann, B; Zupranski, P; Aniol, K A; Armstrong, D S; Averett, T; Benaoum, H; Bertin, P Y; Burtin, E; Cahoon, J; Cates, G D; Chang, C C; Chao Yu Chiu; Chen, J P; Seonho Choi; Chudakov, E; Craver, B; Cusanno, F; Decowski, P; Deepa, D; Ferdi, C; Feuerbach, R J; Finn, J M; Fuoti, K; Gilman, R; Glamazdin, A; Gorbenko, V; Grames, J M; Hansknecht, J; Higinbotham, D W; Holmes, R; Holmstrom, T; Humensky, T B; Ibrahim, H; De Jager, C W; Jiang, X; Kaufman, L J; Kelleher, A; Kolarkar, A; Kowalski, S; Kumar, K S; Lambert, D; La Violette, P; Le Rose, J; Lhuillier, D; Liyanage, N; Margaziotis, D J; Mazouz, M; McCormick, K; Meekins, D G; Meziani, Z E; Michaels, R; Moffit, B; Monaghan, P; Munoz-Camacho, C; Nanda, S; Nelyubin, V V; Neyret, D; Paschke, K D; Poelker, M; Pomatsalyuk, R I; Qiang, Y; Reitz, B; Roche, J; Saha, A; Singh, J; Snyder, R; Souder, P A; Subedi, R; Suleiman, R; Sulkosky, V; Tobias, W A; Urciuoli, G M; Vacheret, A; Voutier, E; Wang, K; Wilson, R; Wojtsekhowski, B; Zheng, X

    2006-01-01T23:59:59.000Z

    We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from ^4He at an average scattering angle = 5.7 degrees and a four-momentum transfer Q^2 = 0.091 GeV^2. From these data, for the first time, the strange electric form factor of the nucleon G^s_E can be isolated. The measured asymmetry of A_PV = (6.72 +/- 0.84 (stat) +/- 0.21 (syst) parts per million yields a value of G^s_E = -0.038 +/- 0.042 (stat) +/- 0.010 (syst), consistent with zero.

  10. 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

    2008-02-04T23:59:59.000Z

    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.

  11. Global analysis of proton elastic form factor data with two-photon exchange corrections

    SciTech Connect (OSTI)

    J. Arrington; W. Melnitchouk; J. A. Tjon

    2007-09-01T23:59:59.000Z

    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.

  12. Lowest Order Hadronic Contribution to the Muon g-2

    E-Print Network [OSTI]

    Christopher Aubin; Tom Blum

    2005-09-20T23:59:59.000Z

    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.

  13. The impact of man upon herpetological communities in the lower Rio Grande Valley, Texas

    E-Print Network [OSTI]

    Thornton, Okla Weldon

    1977-01-01T23:59:59.000Z

    was observed with P 1 1 k', B f ~ll e s, H~y! v ' 1 u and occasionally with Smilisca baudini. Wright and Wright (1949) found this species under the fallen trunks of Spanish bayonet and noted they bred in ponds, roadside ditches, or temporary rain pools... I L. ? .~. I 2 I I i 2 12 I 39 41 iaaf @3@ g I Q 1 I j Q2 I 10 34 23 I j 24 23 ~ 22 21 9 CI 13 23 yinc908 v~ e . I I 6. Coillbes 7. La Feria 8. Los Presnos 9. San Benito 10. Har lingen 11. Rio Hondo 12. Arroyo City 13...

  14. Recursion relations for the matrix elements of the two-dimensional harmonic oscillator

    E-Print Network [OSTI]

    Ferester, Avner Herman

    1970-01-01T23:59:59.000Z

    /-;~-i- -) /, , (y ? (~+2- i) /, , (zy (11) (12) (13) +1th k = 2, g, 4, . . . , and Q(2)= /, anC L&(2)= e+i-&. KATBIX EEENENTS QF AIV ARBITRARY PUlVC'. ZIO'V Shinkle (7) . uses a five-tenn recursion relation for the matrix elements of an arbitrary function... OF AN ARBITRARY FUNCTION Page ~ 1 3 7 iiATPIX EIZFElG'S OF THE GAUSSIAN& EXP (-PZ) . . . . . . . . . . 11 FAT IX ELENENTS 0 Z+ EXP (-(Z) iIATRIX LEiiENTS OF Z+ 19 NATRIX ELENENTS OF THE LORENTZI&l, (C + Z) SUMMARY REFERENCES 'v ITA ~ ~ ~ ~ ~ ~ ~ e...

  15. 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

    1961-01-01T23:59:59.000Z

    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...

  16. Inclusive electron - nucleus scattering at large momentum transfer

    SciTech Connect (OSTI)

    J. Arrington; C. S. Armstrong; T. Averett; O. K. Baker; L. de Bever; C. W. Bochna; W. Boeglin; B. Bray; R. D. Carlini; G. Collins; C. Cothran; D. Crabb; D. Day; J. A. Dunne; D. Dutta; R. Ent; B. W. Filippone; A. Honegger; E. W. Hughes; J. Jensen; J. Jourdan; C. E. Keppel; D. M. Koltenuk; R. Lindgren; A. Lung; D. J. Mack; J. McCarthy; R. D. McKeown; D. Meekins; J. H. Mitchell; H. G. Mkrtchyan; G. Niculescu; I. Niculescu; T. Petitjean; O. Rondon; I. Sick; C. Smith; B. Terburg; W. F. Vulcan; S. A. Wood; C. Yan; J. Zhao; and B. Zihlmann

    1999-03-01T23:59:59.000Z

    Inclusive electron scattering is measured with 4.045 GeV incident beam energy from C, Fe, and Au targets. The measured energy transfers and angles correspond to a kinematic range for Bjorken x>1 and momentum transfers from Q2 = 1-7 (GeV/c)2. When analyzed in terms of the y-scaling function the data show for the first time an approach to scaling for values of the initial nucleon momenta significantly greater than the nuclear matter Fermi momentum (i.e., >0.3 GeV/c).

  17. Characteristics of dough and tortillas prepared with composite wheat-sorghum flours 

    E-Print Network [OSTI]

    Torres, Patricia Isabel

    1988-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . Design of Experiments. xi 6 6 8 8 8 9 ID I4 19 20 2O 2Q 2 x 21 2 x 22 24 24 25 28 2g 34 3 i 31 32 32 32 CHAPTER IV VI TABLE OF CONTENTS (Continued) Experiment I. Experiment II. Experiment III PRELIMINARY RESULTS... in 2u'K Wneat-Sorgnum Tortilla Firmness Dougn Improvers and 2ux wheat-Sorghum Tortilla Ro liability Page 33 33 33 35 35 42 4e 47 46 48 Su 5U 56 62 62 02 6o 68 7U 73 76 7d 76 v111 VI I CONCLUSIONS LITERATURE CITED. TABLE...

  18. A Dispersive approach to Sudakov resummation.

    E-Print Network [OSTI]

    Gardi, Einan; Grunberg, Georges

    in the Sudakov limit is a direct reflection of the factorization property of infrared (soft and collinear) singularities. In infrared safe quantities the singularity associated with soft and collinear radiation (integrated over phase space) cancel exactly, order... factor. This term is infrared divergent, but as indicated in the second line in (3.9), the singularity cancels exactly upon integrating over x with the divergence of the integral of CFJ ((1? x)Q2)/(1? x) near x? 1. Drell–Yan cross section The cross...

  19. TPEcalc: a program for calculation of two-photon exchange amplitudes

    E-Print Network [OSTI]

    Dmitry Borisyuk; Alexander Kobushkin

    2015-06-03T23:59:59.000Z

    TPEcalc is a C++ program for calculation of two-photon exchange (TPE) amplitudes in elastic electron-hadron scattering, based on the dispersion method. It is a command-line tool which accepts kinematical parameters (Q^2 and epsilon) as input and returns TPE amplitudes. It can do calculations for proton, neutron and pion targets. Any spin 1/2+ or spin 0- target is supported, if the user supplies all necessary form factor parameterizations. This paper describes how to use TPEcalc and outlines underlying theory. The program source code can be downloaded from http://tpe.bitp.kiev.ua/

  20. Gold-plated moments of nucleon structure functions in baryon chiral perturbation theory

    E-Print Network [OSTI]

    Vadim Lensky; Jose Manuel Alarcón; Vladimir Pascalutsa

    2014-11-09T23:59:59.000Z

    We obtain leading- and next-to-leading order predictions of chiral perturbation theory for several prominent moments of nucleon structure functions. These free-parameter free results turn out to be in overall agreement with the available empirical information on nearly all of the considered moments, in the region of low-momentum transfer ($Q^2 < 0.3$ GeV$^2$). Especially surprising is the situation for the spin polarizability $\\delta_{LT}$, which thus far was not reproducible in chiral perturbation theory for proton and neutron simultaneously. This problem, known as the "$\\delta_{LT}$ puzzle," is not seen in the present calculation.