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1

Systematic decomposition of the neutrinoless double beta decay operator  

E-Print Network [OSTI]

We discuss the systematic decomposition of the dimension nine neutrinoless double beta decay operator, focusing on mechanisms with potentially small contributions to neutrino mass, while being accessible at the LHC. We first provide a (d=9 tree-level) complete list of diagrams for neutrinoless double beta decay. From this list one can easily recover all previously discussed contributions to the neutrinoless double beta decay process, such as the celebrated mass mechanism or "exotics", such as contributions from left-right symmetric models, R-parity violating supersymmetry and leptoquarks. More interestingly, however, we identify a number of new possibilities which have not been discussed in the literature previously. Contact to earlier works based on a general Lorentz-invariant parametrisation of the neutrinoless double beta decay rate is made, which allows, in principle, to derive limits on all possible contributions. We furthermore discuss possible signals at the LHC for mediators leading to the short-range part of the amplitude with one specific example. The study of such contributions would gain particular importance if there were a tension between different measurements of neutrino mass such as coming from neutrinoless double beta decay and cosmology or single beta decay.

Florian Bonnet; Martin Hirsch; Toshihiko Ota; Walter Winter

2014-06-23T23:59:59.000Z

2

Systematic Effects in Pulse Shape Analysis of HPGe Detector Signals for Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

Pulse shape analysis is an important background reduction and signal identification technique for next generation of neutrinoless double-beta decay experiments examining 76Ge. We present a study of the systematic uncertainties in one such parametric pulse-shape analysis technique for separating multi-site backgrounds from single-site signal events. We examined systematic uncertainties for events in full-energy gamma peaks (predominantly multi-site), double escape peaks (predominantly single-site) and the Compton continuum near double-beta decay endpoint (which will be the dominant background for most neutrinoless double-beta decay searches). In short, we find total (statistical plus systematic) fractional uncertainties in the pulse shape cut survival probabilities of: 6.6%, 1.5% and 3.8% for double-escape, continuum and gamma-ray events respectively.

Victor M Gehman; Steven R Elliott; Dongming Mei

2010-03-05T23:59:59.000Z

3

Systematic Law for Half-lives of Double $?$-decay with Two Neutrinos  

E-Print Network [OSTI]

Nuclear double $\\beta$-decay with two neutrinos is a rare and important process for natural radioactivity of unstable nuclei. The experimental data of nuclear double $\\beta^{-}$-decay with two neutrinos are analyzed and a systematic law to calculate the half-lives of this rare process is proposed. It is the first analytical and simple formula for double $\\beta$-decay half-lives where the leading effect from both the Coulomb potential and nuclear structure is included. The systematic law shows that the logarithms of the half-lives are inversely proportional to the decay energies for the ground state transitions between parent nuclei and daughter nuclei. The calculated half-lives are in agreement with the experimental data of all known eleven nuclei with an average factor of 3.06. The half-lives of other possible double $\\beta$-decay candidates with two neutrinos are predicted and these can be useful for future experiments. The law, without introducing any extra adjustment, is also generalized to the calculations of double $\\beta $-decay half-lives from the ground states of parent nuclei to the first $0^+$ excited states of daughter nuclei and the calculated half-lives agree very well with the available data. Some calculated half-lives are the first theoretical results of double $\\beta $-decay half-lives from the ground states of parent nuclei to the first $0^+$ excited states of daughter nuclei. The similarity and difference between the law of $\\alpha$-decay and that of double $\\beta^{-}$-decay are also analyzed and discussed.

Yuejiao Ren; Zhongzhou Ren

2014-06-04T23:59:59.000Z

4

Use of uranium decay series for dating an archaeological smelting site  

E-Print Network [OSTI]

Through the identification of phases and their isotopic composition and variability, an assessment of the applicability of uranium decay series dating to El Manchon slags was made. El Manchon is the only Mesoamerican site ...

Wolf, Violetta (Violetta R.)

2008-01-01T23:59:59.000Z

5

E-Print Network 3.0 - alpha-and beta-decay systematics Sample...  

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

Fission and Nuclear Technologies ; Physics 2 What can we learn from neutrinoless double beta decay experiments? John N. Bahcall,* Hitoshi Murayama, + and C. Pen aGaray ...

6

Supramolecular structures in monohydroxy alcohols: Insights from shear-mechanical studies of a systematic series of octanol structural isomers  

E-Print Network [OSTI]

A recent study [Gainaru et al. PRL., 112, 098301 (2014)] of two supercooled monohydroxy alcohols close to the glass-transition temperature showed that the Debye peak, thus far mainly observed in the electrical response, also has a mechanical signature. In this work, we apply broadband shear-mechanical spectroscopy to a systematic series of octanol structural isomers, x-methyl-3-heptanol (with x ranging from 2 to 6). We find that the characteristics of the mechanical signature overall follow the systematic behavior observed in dielectric spectroscopy. However, the influence from the molecular structure is strikingly small in mechanics (compared to roughly a factor 100 increase in dielectric strength) and one isomer clearly does not conform to the general ordering. Finally, the mechanical data surprisingly indicate that the size of the supramolecular structures responsible for the Debye process is nearly unchanged in the series.

Tina Hecksher; Bo Jakobsen

2014-09-11T23:59:59.000Z

7

Statistical Global Modeling of Beta-Decay Halflives Systematics Using Multilayer Feedforward Neural Networks and Support Vector Machines  

E-Print Network [OSTI]

In this work, the beta-decay halflives problem is dealt as a nonlinear optimization problem, which is resolved in the statistical framework of Machine Learning (LM). Continuing past similar approaches, we have constructed sophisticated Artificial Neural Networks (ANNs) and Support Vector Regression Machines (SVMs) for each class with even-odd character in Z and N to global model the systematics of nuclei that decay 100% by the beta-minus-mode in their ground states. The arising large-scale lifetime calculations generated by both types of machines are discussed and compared with each other, with the available experimental data, with previous results obtained with neural networks, as well as with estimates coming from traditional global nuclear models. Particular attention is paid on the estimates for exotic and halo nuclei and we focus to those nuclides that are involved in the r-process nucleosynthesis. It is found that statistical models based on LM can at least match or even surpass the predictive performance of the best conventional models of beta-decay systematics and can complement the latter.

N. J. Costiris; E. Mavrommatis; K. A. Gernoth; J. W. Clark; H. Li

2008-09-02T23:59:59.000Z

8

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 South Place:ReferenceEditWisconsin:YBR14Information 20 AACEnergy3855645|

9

E-Print Network 3.0 - actinide decay series Sample Search Results  

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

page C2-841 Summary: in the actinide series whereas the acti 1 es up to Pu metal are transition metal likeq" : The f states in Am... aux actinides metalliques et aux oxydes sont...

10

Systematic study of nuclear matrix elements in neutrinoless double-beta decay with a beyond mean-field covariant density functional theory  

E-Print Network [OSTI]

We report a systematic study of nuclear matrix elements (NMEs) in neutrinoless double-beta decays with a state-of-the-art beyond mean-field covariant density functional theory. The dynamic effects of particle-number and angular-momentum conservations as well as quadrupole shape fluctuations are taken into account with projections and generator coordinate method for both initial and final nuclei. The full relativistic transition operator is adopted to calculate the NMEs. The present systematic studies show that in most of the cases there is a much better agreement with the previous non-relativistic calculation based on the Gogny force than in the case of the nucleus $^{150}$Nd found in Song et al. [Phys. Rev. C 90, 054309 (2014)]. In particular, we find that the total NMEs can be well approximated by the pure axial-vector coupling term with a considerable reduction of the computational effort.

J. M. Yao; L. S. Song; K. Hagino; P. Ring; J. Meng

2015-01-29T23:59:59.000Z

11

Communication: Systematic shifts of the lowest unoccupied molecular orbital peak in x-ray absorption for a series of 3d metal porphyrins  

E-Print Network [OSTI]

-ray absorption for a series of 3d metal porphyrins J. M. GarcĂ­a-Lastra,1,2,a P. L. Cook,3 F. J. Himpsel,3 and A 20 October 2010 Porphyrins are widely used as dye molecules in solar cells. Knowing the energies of their frontier orbitals is crucial for optimizing the energy level structure of solar cells. We use near edge x

12

Systematic modulation and enhancement of CO{sub 2} : N{sub 2} selectivity and water stability in an isoreticular series of bio-MOF-11 analogues  

SciTech Connect (OSTI)

An isoreticular series of cobalt-adeninate bio-MOFs (bio-MOFs 11-14) is reported. The pores of bio-MOFs 11-14 are decorated with acetate, propionate, butyrate, and valerate, respectively. The nitrogen (N{sub 2}) and carbon dioxide (CO{sub 2}) adsorption properties of these materials are studied and compared. The isosteric heats of adsorption for CO{sub 2} are calculated, and the CO{sub 2}:N{sub 2} selectivities for each material are 10 determined. As the lengths of the aliphatic chains decorating the pores in bio-MOFs 11-14 increase, the BET surface areas decrease from 1148 m{sup 2}/g to 17 m{sup 2}/g while the CO{sub 2}:N{sub 2} selectivities predicted from ideal adsorbed solution theory at 1 bar and 273 K for a 10:90 CO{sub 2}:N{sub 2} mixture range from 73:1 for bio-MOF-11 to 123:1 for bio-MOF-12 and finally to 107:1 for bio-MOF-13. At 298 K, the selectivities are 43:1 for bio-MOF-11, 52:1 for bio-MOF-12, and 40:1 for bio-MOF-13. Additionally, it is shown that 15 bio-MOF-14 exhibits a unique molecular sieving property that allows it to adsorb CO{sub 2} but not N{sub 2} at 273 and 298 K. Finally, the water stability of bio-MOFs 11-14 increases with increasing aliphatic chain length. Bio-MOF-14 exhibits no loss of crystallinity or porosity after soaking in water for one month.

Li, Tao; Chen, De-Li; Sullivan, Jeanne E.; Kozlowski, Mark T.; Johnson, J. Karl; Rosi, Nathaniel L.

2013-02-01T23:59:59.000Z

13

Constraining Decaying Dark Matter  

E-Print Network [OSTI]

We revisited the decaying dark matter (DDM) model, in which one collisionless particle decays early into two collisionless particles, that are potentially dark matter particles today. The effect of DDM will be manifested in the cosmic microwave background (CMB) and structure formation. With a systematic modification of CMB calculation tool \\texttt{camb}, we can numerically calculated this effect, and compare it to observations. Further Markov Chain Monte Carlo \\texttt{cosmomc} runnings update the constraints in that model: the free streaming length $\\lambda_{FS}\\lesssim0.5$Mpc for nonrelativistic decay, and $((M_{DDM}/keV) Y)^2 (T_d/yr)\\lesssim5\\times10^{-5}$ for relativistic decay.

Ran Huo

2011-07-13T23:59:59.000Z

14

Half-lives of Double $?^+$-decay with Two Neutrinos  

E-Print Network [OSTI]

Nuclear double $\\beta ^-$-decays with two neutrinos were observed for many years and a systematic law describing the relation between their half-lives and decay energies was also proposed recently [Phys. Rev. C89, 064603 (2014)]. However, double $\\beta ^+$-decay ($\\beta ^+\\beta^+)$ with emission of both two positrons and two neutrinos has not been observed up to date. In this article, we perform a systematic analysis on the candidates of double $\\beta ^+$-decay, based on the 2012 nuclear mass table. Eight nuclei are found to be the good candidates for double $\\beta ^+$-decay and their half-lives are predicted according to the generalization of the systematic law to double $\\beta ^+$-decay. As far as we know, there is no theoretical result on double $\\beta ^+$-decay of nucleus $^{154}Dy$ and our result is the first prediction on this nucleus. This is also the first complete research on eight double $\\beta ^+$-decay candidates based on the available data of nuclear masses. It is expected that the calculated half-lives of double $\\beta ^+$-decay in this article will be useful for future experimental search of double $\\beta ^+$-decay.

Yuejiao Ren; Zhongzhou Ren

2015-01-07T23:59:59.000Z

15

$\\tau$ decays with neutral kaons  

E-Print Network [OSTI]

The branching ratio of the tau lepton to a neutral K meson is measured from a sample of approximately 200,000 tau decays recorded by the OPAL detector at centre-of-mass energies near the Z0 resonance. The measurement is based on two samples which identify one-prong tau decays with KL and KS mesons. The combined branching ratios are measured to be B(tau- -->pi- K0bar nutau) = (9.33+-0.68+-0.49)x10^-3 B(tau- -->pi- K0bar [>=1pi0] nutau) = (3.24+-0.74+-0.66)x10^-3 B(tau- -->K- K0bar [>=0pi0] nutau) = (3.30+-0.55+-0.39)x10^-3 where the first error is statistical and the second systematic.

Abbiendi, G; Ĺkesson, P F; Alexander, Gideon; Allison, J; Anderson, K J; Arcelli, S; Asai, S; Ashby, S F; Axen, D A; Azuelos, Georges; Bailey, I; Ball, A H; Barberio, E; Barlow, R J; Batley, J Richard; Baumann, S; Behnke, T; Bell, K W; Bella, G; Bellerive, A; Bentvelsen, Stanislaus Cornelius Maria; Bethke, Siegfried; Betts, S; Biebel, O; Biguzzi, A; Bloodworth, Ian J; Bock, P; Böhme, J; Boeriu, O; Bonacorsi, D; Boutemeur, M; Braibant, S; Bright-Thomas, P G; Brigliadori, L; Brown, R M; Burckhart, Helfried J; Capiluppi, P; Carnegie, R K; Carter, A A; Carter, J R; Chang, C Y; Charlton, D G; Chrisman, D; Ciocca, C; Clarke, P E L; Clay, E; Cohen, I; Conboy, J E; Cooke, O C; Couchman, J; Couyoumtzelis, C; Coxe, R L; Cuffiani, M; Dado, S; Dallavalle, G M; Dallison, S; Davis, R; de Roeck, A; Dervan, P J; Desch, Klaus; Dienes, B; Dixit, M S; Donkers, M; Dubbert, J; Duchovni, E; Duckeck, G; Duerdoth, I P; Estabrooks, P G; Etzion, E; Fabbri, Franco Luigi; Fanfani, A; Fanti, M; Faust, A A; Feld, L; Ferrari, P; Fiedler, F; Fierro, M; Fleck, I; Frey, A; Fürtjes, A; Futyan, D I; Gagnon, P; Gary, J W; Gaycken, G; Geich-Gimbel, C; Giacomelli, G; Giacomelli, P; Gingrich, D M; Glenzinski, D A; Goldberg, J; Gorn, W; Grandi, C; Graham, K; Gross, E; Grunhaus, Jacob; Gruwé, M; Hajdu, C; Hanson, G G; Hansroul, M; Hapke, M; Harder, K; Harel, A; Hargrove, C K; Harin-Dirac, M; Hauschild, M; Hawkes, C M; Hawkings, R; Hemingway, Richard J; Herten, G; Heuer, R D; Hildreth, M D; Hill, J C; Hobson, P R; Höcker, Andreas; Hoffman, K; Homer, R James; Honma, A K; Horváth, D; Hossain, K R; Howard, R; Hüntemeyer, P; Igo-Kemenes, P; Imrie, D C; Ishii, K; Jacob, F R; Jawahery, A; Jeremie, H; Jimack, Martin Paul; Jones, C R; Jovanovic, P; Junk, T R; Kanaya, N; Kanzaki, J I; Karapetian, G V; Karlen, D A; Kartvelishvili, V G; Kawagoe, K; Kawamoto, T; Kayal, P I; Keeler, Richard K; Kellogg, R G; Kennedy, B W; Kim, D H; Klier, A; Kobayashi, T; Kobel, M; Kokott, T P; Kolrep, M; Komamiya, S; Kowalewski, R V; Kress, T; Krieger, P; Von Krogh, J; Kühl, T; Kupper, M; Kyberd, P; Lafferty, G D; Landsman, Hagar Yaël; Lanske, D; Lauber, J; Lawson, I; Layter, J G; Lellouch, Daniel; Letts, J; Levinson, L; Liebisch, R; Lillich, J; List, B; Littlewood, C; Lloyd, A W; Lloyd, S L; Loebinger, F K; Long, G D; Losty, Michael J; Lü, J; Ludwig, J; Macchiolo, A; MacPherson, A L; Mader, W F; Mannelli, M; Marcellini, S; Marchant, T E; Martin, A J; Martin, J P; Martínez, G; Mashimo, T; Mättig, P; McDonald, W J; McKenna, J A; McKigney, E A; McMahon, T J; McPherson, R A; Meijers, F; Méndez-Lorenzo, P; Merritt, F S; Mes, H; Meyer, I; Michelini, Aldo; Mihara, S; Mikenberg, G; Miller, D J; Mohr, W; Montanari, A; Mori, T; Nagai, K; Nakamura, I; Neal, H A; Nisius, R; O'Neale, S W; Oakham, F G; Odorici, F; Ögren, H O; Okpara, A N; Oreglia, M J; Orito, S; Pásztor, G; Pater, J R; Patrick, G N; Patt, J; Pérez-Ochoa, R; Petzold, S; Pfeifenschneider, P; Pilcher, J E; Pinfold, James L; Plane, D E; Poli, B; Polok, J; Przybycien, M B; Quadt, A; Rembser, C; Rick, Hartmut; Robins, S A; Rodning, N L; Roney, J M; Rosati, S; Roscoe, K; Rossi, A M; Rozen, Y; Runge, K; Runólfsson, O; Rust, D R; Sachs, K; Saeki, T; Sahr, O; Sang, W M; Sarkisyan-Grinbaum, E; Sbarra, C; Schaile, A D; Schaile, O; Scharff-Hansen, P; Schieck, J; Schmitt, S; Schöning, A; Schröder, M; Schumacher, M; Schwick, C; Scott, W G; Seuster, R; Shears, T G; Shen, B C; Shepherd-Themistocleous, C H; Sherwood, P; Siroli, G P; Skuja, A; Smith, A M; Snow, G A; Sobie, Randall J; Söldner-Rembold, S; Spagnolo, S; Sproston, M; Stahl, A; Stephens, K; Stoll, K; Strom, D; Ströhmer, R; Surrow, B; Talbot, S D; Taras, P; Tarem, S; Teuscher, R; Thiergen, M; Thomas, J; Thomson, M A; Torrence, E; Towers, S; Trefzger, T M; Trigger, I; Trócsányi, Z L; Tsur, E; Turner-Watson, M F; Ueda, I; Van Kooten, R; Vannerem, P; Verzocchi, M; Voss, H; Wäckerle, F; Waller, D; Ward, C P; Ward, D R; Watkins, P M; Watson, A T; Watson, N K; Wells, P S; Wengler, T; Wermes, N; Wetterling, D; White, J S; Wilson, G W; Wilson, J A; Wyatt, T R; Yamashita, S; Zacek, V; Zer-Zion, D

2000-01-01T23:59:59.000Z

16

BEAM RELATED SYSTEMATICS IN HIGGS BOSON MASS MEASUREMENT  

E-Print Network [OSTI]

BEAM RELATED SYSTEMATICS IN HIGGS BOSON MASS MEASUREMENT A.RASPEREZA DESY, Notkestrasse 85, D-22607 and differential luminosity spectrum measurements and beam energy spread on the precision of the Higgs boson mass such as Higgs boson mass, decay branching fractions and production rate. However, most of these studies did

17

Half-lives of Double $\\beta ^+$-decay with Two Neutrinos  

E-Print Network [OSTI]

Nuclear double $\\beta ^-$-decays with two neutrinos were observed for many years and a systematic law describing the relation between their half-lives and decay energies was also proposed recently [Phys. Rev. C89, 064603 (2014)]. However, double $\\beta ^+$-decay ($\\beta ^+\\beta^+)$ with emission of both two positrons and two neutrinos has not been observed up to date. In this article, we perform a systematic analysis on the candidates of double $\\beta ^+$-decay, based on the 2012 nuclear mass table. Eight nuclei are found to be the good candidates for double $\\beta ^+$-decay and their half-lives are predicted according to the generalization of the systematic law to double $\\beta ^+$-decay. As far as we know, there is no theoretical result on double $\\beta ^+$-decay of nucleus $^{154}Dy$ and our result is the first prediction on this nucleus. This is also the first complete research on eight double $\\beta ^+$-decay candidates based on the available data of nuclear masses. It is expected that the calculated hal...

Ren, Yuejiao

2015-01-01T23:59:59.000Z

18

Semileptonic Decays  

SciTech Connect (OSTI)

The following is an overview of the measurements of the CKM matrix elements |V{sub cb}| and |V{sub ub}| that are based on detailed studies of semileptonic B decays by the BABAR and Belle Collaborations and major advances in QCD calculations. In addition, a new and improved measurement of the ratios R(D{sup (*)}) = {Beta}({bar B} {yields} D{sup (*)}{tau}{sup -}{bar {nu}}{sub {tau}})/{Beta}({bar B} {yields} D{sup (*)}{ell}{sup -}{bar {nu}}{sub {ell}}) is presented. Here D{sup (*)} refers to a D or a D* meson and {ell} is either e or {mu}. The results, R(D) = 0.440 {+-} 0.058 {+-} 0.042 and R(D*) = 0.332 {+-} 0.024 {+-} 0.018, exceed the Standard Model expectations by 2.0{sigma} and 2.7{sigma}, respectively. Taken together, they disagree with these expectations at the 3.4{sigma} level. The excess of events cannot be explained by a charged Higgs boson in the type II two-Higgs-doublet model.

Luth, Vera G.; /SLAC

2012-10-02T23:59:59.000Z

19

Radiative Leptonic B Decays  

SciTech Connect (OSTI)

We present the results of a search for B{sup +} meson decays into {gamma}{ell}{sup +}{nu}{sub {ell}}, where {ell} = e,{mu}. We use a sample of 232 million B{bar B} meson pairs recorded at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II B factory. We measure a partial branching fraction {Delta}{beta} in a restricted region of phase space that reduces the effect of theoretical uncertainties, requiring the lepton energy to be in the range 1.875 and 2.850 GeV, the photon energy to be in the range 0.45 and 2.35 GeV, and the cosine of the angle between the lepton and photon momenta to be less than -0.36, with all quantities computed in the {Upsilon}(4S) center-of-mass frame. We find {Delta}{Beta}(B{sup +} {yields} {gamma}{ell}{sup +}{nu}{sub {ell}}) = (-0.3{sub 1.5}{sup +1.3}(statistical){sub -0.6}{sup +0.6}(systematic) {+-} 0.1(theoretical)) x 10{sup -6}, under the assumption of lepton universality. Interpreted as a 90% confidence-level Bayesian upper limit, the result corresponds to 1.7 x 10{sup -6} for a prior at in amplitude, and 2.3 x 10{sup -6} for a prior at in branching fraction.

Chen, Edward Tann; /Caltech; ,

2008-10-06T23:59:59.000Z

20

Exotic decay model and alpha decay studies  

SciTech Connect (OSTI)

In exotic decay studies, the lifetime of alpha emission occurs crucially in the branching ratio calculation. In this work, we extend our previous exotic decay model to calculate the same. But, in this case unlike in the exotic decay, the redistribution of charge for given masses of the fragments has to be taken into account since the charge-to-mass ratio of the alpha fragment differs from that of the parent nucleus. We have therefore modified the Yukawa-plus-exponential potential in the post-scission region in our model suitably so as to allow the required charge redistribution among the fragments in the region between sharp contact and the point up to which the finite-range effects persist. The success of this model for alpha decay is as good as for the exotic decay studies.

Shanmugam, G.; Kamalaharan, B. (Department of Physics, Presidency College, Madras 600005, India (IN))

1990-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Baryon helicity in B decay  

SciTech Connect (OSTI)

We extend the perturbative argument of helicity amplitudes to the two-body baryonic decays of B decays.

Suzuki, Mahiko

2005-05-13T23:59:59.000Z

22

A systematic study of select species complexes of Eleocharis subgenus Limnochloa (Cyperaceae)  

E-Print Network [OSTI]

of achene micro-morphology as an aid in systematics in Eleocharis, especially its potential in assigning sectional or serial rank. Menapace (1993) was also able to place species of Eleocharis at the series level previously unassigned by Svenson (1939...

Rosen, David Jonathan

2009-05-15T23:59:59.000Z

23

Uncertainties in Nuclear Matrix Elements for Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

Uncertainties in Nuclear Matrix Elements for Neutrinoless Double-Beta Decay Jonathan Engel Abstract. I briefly review calculations of the matrix elements governing neutrinoless double-beta decay, in broad terms, strategies for reducing systematic error. 1. Introduction Neutrinoless double-beta (0

Engel, Jonathan

24

Power Series Introduction  

E-Print Network [OSTI]

Power Series 16.4 Introduction In this section we consider power series. These are examples of infinite series where each term contains a variable, x, raised to a positive integer power. We use the ratio test to obtain the radius of convergence R, of the power series and state the important result

Vickers, James

25

Neutrinoless Quadruple Beta Decay  

E-Print Network [OSTI]

We point out that lepton number violation is possible even if neutrinos are Dirac particles. We illustrate this by constructing a simple model that allows for lepton number violation by four units only. As a consequence, neutrinoless double beta decay is forbidden, but neutrinoless quadruple beta decay is possible: $(A,Z) \\to (A,Z+4) + 4 e^-$. We identify three candidate isotopes for this decay, the most promising one being Nd-150 due to its high $Q_{0\

Julian Heeck; Werner Rodejohann

2013-06-03T23:59:59.000Z

26

Double Beta Decay: Scintillators  

E-Print Network [OSTI]

Scintillator detectors can be used in experiments searching for neutrinoless double beta decay. A wide variety of double beta decay candidate isotopes can be made into scintillators or can be loaded into scintillators. Experimental programs developing liquid xenon, inorganic crystals, and Nd-loaded liquid scintillator are described in this review. Experiments with 48Ca and 150Nd benefit from their high endpoint which places the neutrinoless double beta decay signal above most backgrounds from natural radioactivity.

Mark C. Chen

2008-10-20T23:59:59.000Z

27

B decays and Supersymmetry  

E-Print Network [OSTI]

I discuss how supersymmetry affects various observables in B decays, and point out the interesting channels in the context of B factories.

Anirban Kundu

2002-05-10T23:59:59.000Z

28

Double beta decay experiments  

E-Print Network [OSTI]

The present status of double beta decay experiments are reviewed. The results of the most sensitive experiments, NEMO-3 and CUORICINO, are discussed. Proposals for future double beta decay experiments are considered. In these experiments sensitivity for the effective neutrino mass will be on the level of (0.1-0.01) eV.

A. S. Barabash

2006-02-22T23:59:59.000Z

29

Double beta decay experiments  

E-Print Network [OSTI]

The present status of double beta decay experiments is reviewed. The results of the most sensitive experiments are discussed. Proposals for future double beta decay experiments with a sensitivity to the $$ at the level of (0.01--0.1) eV are considered.

A. S. Barabash

2011-07-28T23:59:59.000Z

30

Rare hadronic B decays  

E-Print Network [OSTI]

Rare hadronic B-meson decays allow us to study CP violation. The class of B decays final states containing two vector mesons provides a rich set of angular correlation observables to study. This article reviews some of the recent experimental results from the BaBar and Belle collaborations.

A. J. Bevan

2006-06-02T23:59:59.000Z

31

Rare B Decays and B Decay Dynamics  

E-Print Network [OSTI]

I present some recent measurements of B meson decay rates to leptonic and charmless hadronic final states, as well as of CP-violation charge asymmetries and other features. I sketch the theoretical frameworks used to predict these, and indicate the level of agreement of the estimates with experiment.

William T. Ford

2005-10-20T23:59:59.000Z

32

RARE KAON DECAYS.  

SciTech Connect (OSTI)

Lepton flavor violation (LFV) experiments have probed sensitivities corresponding to mass scales of well over 100 TeV, making life difficult for models predicting accessible LFV in kaon decay and discouraging new dedicated experiments of this type.

LITTENBERG, L.

2005-07-19T23:59:59.000Z

33

Neutrinoless double beta decay  

E-Print Network [OSTI]

The physics potential of neutrinoless double beta decay is discussed. Furthermore, experimental considerations are presented as well as the current status of experiments. Finally an outlook towards the future, work on nuclear matrix elements and alternative processes is given.

K. Zuber

2012-01-23T23:59:59.000Z

34

Neutrinoless Double $?$-Decay  

E-Print Network [OSTI]

The neutrinoless double $\\beta$-decay is reviewed. Model independent evidence in favor of neutrino masses and mixing is briefly summarized. The data of the recent experiments on the search for $0\

S. M. Bilenky

2004-03-23T23:59:59.000Z

35

Charmless B Decays  

SciTech Connect (OSTI)

Rare charmless hadronic B decays are a good testing ground for the standard model. The dominant amplitudes contributing to this class of B decays are CKM suppressed tree diagrams and b {yields} s or b {yields} d loop diagrams (''penguins''). These decays can be used to study interfering standard model (SM) amplitudes and CP violation. They are sensitive to the presence of new particles in the loops, and they provide valuable information to constrain theoretical models of B decays. The B factories BABAR at SLAC and Belle at KEK produce B mesons in the reaction e{sup +}e{sup -} {yields} {Upsilon}(4S) {yields} B{bar B}. So far they have collected integrated luminosities of about 406 fb{sup -1} and 600 fb{sup -1}, respectively. The results presented here are based on subsets of about 200-500 fb{sup -1} and are preliminary unless a journal reference is given.

Gradl, Wolfgang; /Edinburgh U.

2007-03-06T23:59:59.000Z

36

EASY Documentation Series CCFE-R (10) 02 The European  

E-Print Network [OSTI]

EASY Documentation Series CCFE-R (10) 02 The European Activation File: EAF-2010 decay data library section libraries, but the description and documentation of these libraries remained sparse, as most effort was given to the documentation and development of the cross section libraries and the FISPACT

37

Double Beta Decay  

E-Print Network [OSTI]

The motivation, present status, and future plans of the search for the neutrinoless double beta decay are reviewed. It is argued that, motivated by the recent observations of neutrino oscillations, there is a reasonable hope that neutrinoless double beta decay corresponding to the neutrino mass scale suggested by oscillations, of about 50 meV, actually exists. The challenges to achieve the sensitivity corresponding to this mass scale, and plans to overcome them, are described.

Steven R. Elliott; Petr Vogel

2002-02-27T23:59:59.000Z

38

Series Transmission Line Transformer  

DOE Patents [OSTI]

A series transmission line transformer is set forth which includes two or more of impedance matched sets of at least two transmissions lines such as shielded cables, connected in parallel at one end ans series at the other in a cascading fashion. The cables are wound about a magnetic core. The series transmission line transformer (STLT) which can provide for higher impedance ratios and bandwidths, which is scalable, and which is of simpler design and construction.

Buckles, Robert A. (Livermore, CA); Booth, Rex (Livermore, CA); Yen, Boris T. (El Cerrito, CA)

2004-06-29T23:59:59.000Z

39

Neutrinoless double {beta}-decay nuclear matrix elements within the SRQRPA with self-consistent short range correlations  

SciTech Connect (OSTI)

The nuclear matrix elements M{sup 0v} of the neutrinoless double beta decay (0v{beta}{beta}-decay) are systematically evaluated using the self-consistent renormalized quasiparticle random phase approximation (SRQRPA). The residual interaction and the two-nucleon short-range correlations are derived from the charge-dependent Bonn (CD-Bonn) potential. The importance of further progress in the calculation of the 0v{beta}{beta}-decay nuclear matrix elements is stressed.

Benes, Petr [IEAP, Czech Technical University (Czech Republic); Simkovic, Fedor [Department of Nuclear Physics and Biophysics, Comenius University, Mlynska dolina, SK-84248 Bratislava (Slovakia); Bogolyubov Laboratory of Theoretical Physics, JINR, Dubna (Russian Federation)

2009-11-09T23:59:59.000Z

40

NUCLEAR PHYSICS THIRD SERIES, VOLUME 32, NUMBER 6 DECEMBER 1985  

E-Print Network [OSTI]

NUCLEAR PHYSICS THIRD SERIES, VOLUME 32, NUMBER 6 DECEMBER 1985 Coulomb energy systematics and the missing J =--, ' + state in 98 R. Sherr Department ofPhysics, Princeton University, Princeton, Xeiv Jersey 08544 Cr. Bertsch Department ofPhysics, University of Tennessee, Knoxville, Tennessee 37996 (Received 22

Bertsch George F.

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Probabilistic time-series  

E-Print Network [OSTI]

SCIA 2003 Tutorial: Hidden Markov Models Sam Roweis, University of Toronto June 29, 2003 Probabilistic Generative Models for Time Series #15; Stochastic models for time-series: y 1 ; y 2 ; : : : ; y #15; Add noise to make the system stochastic: p(y t jy t 1 ;y t 2 ; : : : ;y t k ) #15; Markov models

Roweis, Sam

42

Multiple Alignment of Continuous Time Series Jennifer Listgarten + , Radford M. Neal + , Sam T. Roweis + and Andrew Emili #  

E-Print Network [OSTI]

Multiple Alignment of Continuous Time Series Jennifer Listgarten + , Radford M. Neal + , Sam T of continuous­valued time series from a stochastic process often contain systematic variations in rate time series generated by a noisy, stochastic process, large sys­ tematic sources of variability

Roweis, Sam

43

Validation of ANS-5. 1 as the decay heat standard at the Savannah River Plant  

SciTech Connect (OSTI)

The Savannah River Laboratory (SRL) is upgrading the methods used to predict the post shutdown decay heat of the Savannah River reactors by implementing procedures based on the ANS Decay Heat Power in Light Water Reactors standard. This approach takes advantage of the large volume of research used in developing the standard and establishes compatibility with the nuclear industry. To qualify the decay heat standard for use, a series of comparisons were made between detailed decay heat calculations performed using the SHIELD code system and results obtained from the standard.

Apperson, Jr, C E

1982-01-01T23:59:59.000Z

44

WHY SEARCH FOR DOUBLE BETA DECAY?  

E-Print Network [OSTI]

the search for neutrinoless double beta decay may prove verySearching for neutrinoless double beta decay is the onlysensitivity of neutrinoless double beta decay. The potential

Kayser, B.

2010-01-01T23:59:59.000Z

45

On harmonic binomial series  

E-Print Network [OSTI]

We evaluate binomial series with harmonic number coefficients, providing recursion relations, integral representations, and several examples. The results are of interest to analytic number theory, the analysis of algorithms, and calculations of theoretical physics, as well as other applications.

Mark W. Coffey

2008-12-09T23:59:59.000Z

46

Decay experiments to test beta - and gamma -strength functions  

E-Print Network [OSTI]

The decays of six delayed-proton precursors have been studied with the particle-X-ray coincidence technique, yielding a more or less detailed view of level widths in the proton emitting nuclei. The results lead to a reevaluation of the techniques for calculating level densities and average gamma-decay widths in exotic nuclei. With these aspects of beta -delayed proton decay specified, the proton energy spectra of a number of precursors (65systematic deviations are observed in the xenon and tellurium isotopes. (30 refs).

Hardy, J C

1981-01-01T23:59:59.000Z

47

The decay of a new nuclide /sup 71/Br  

E-Print Network [OSTI]

The decay of mass-separated samples of the previously unknown nuclide /sup 71/Br have been investigated by means of the Chalk River on-line isotope separator. Eleven gamma -transitions were assigned to the decay of this nuclide and its half-life was measured to be 21.4+or-0.6 s. A simple decay scheme for /sup 71/Br has been constructed incorporating six levels in its daughter, /sup 71/Se. The half-life of the first excited state in /sup 71/Se was measured to be 5.5+or-1.0 mu s and the transition from this state to the ground state was found to be highly converted. Systematic trends in the level schemes of /sup 67 /Zn, /sup 69/Ge and /sup 71/Se are investigated. (16 refs).

Hagberg, E; Evans, H C; Hardy, J C; Koslowsky, V T; Schmeing, H; Schrewe, U J; Sharma, K S

1981-01-01T23:59:59.000Z

48

Evidence for the Rare Decay B+ to Ds+ pi0  

SciTech Connect (OSTI)

The authors have searched for the rare decay B{sup +} {yields} D{sub s}{sup +}{pi}{sup 0}. The analysis is based on a sample of 232 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. They find 19.6 signal events, corresponding to a significance of 4.7 {sigma}. The extracted signal yield including statistical and systematic uncertainties is 20.1{sub -6.0-1.5}{sup +6.8+0.4}, and they measure {Beta}(B{sup +} {yields} D{sub s}{sup +}{pi}{sup 0}) = (1.5{sub -0.4}{sup +0.5} {+-} 0.1 {+-} 0.2) x 10{sup -5}, where the first uncertainty is statistical, the second is systematic, and the last is due to the uncertainty on the D{sub s}{sup +} decay and its daughter decay branching fractions.

Aubert, B.

2006-11-17T23:59:59.000Z

49

Neutrinoless double beta decay  

E-Print Network [OSTI]

The status of the search for neutrinoless double beta decay is reviewed. The effort to reach the sensitivity needed to cover the effective Majorana neutrino mass corresponding to the degenerate and inverted mass hierarchy is described. Various issues concerning the theory (and phenomenology) of the relation between the $0\

Petr Vogel

2006-11-17T23:59:59.000Z

50

Vacuum Energy Decay  

E-Print Network [OSTI]

The problem of the vacuum energy decay is studied through the analysis of the vacuum survival amplitude ${\\mathcal A}(z, z')$. Transition amplitudes are computed for finite time-span, $Z\\equiv z^\\prime-z$, and their {\\em late time} behavior is discussed up to first order in the coupling constant, $\\l$.

Enrique Álvarez; Roberto Vidal

2011-11-09T23:59:59.000Z

51

Cosmology with decaying particles  

SciTech Connect (OSTI)

We consider a cosmological model in which an unstable massive relic particle species (denoted by X) has an initial mass density relative to baryons ..beta../sup -1/ identically equal rho/sub X//rho/sub B/ >> 1, and then decays recently (redshift z less than or equal to 1000) into particles which are still relativistic today (denoted by R). We write down and solve the coupled equations for the cosmic scale factor a(t), the energy density in the various components (rho/sub X/, rho/sub R/, rho/sub B/), and the growth of linear density perturbations (delta rho/rho). The solutions form a one parameter (..beta..) family of solutions; physically ..beta../sup -1/ approx. = (..cap omega../sub R//..cap omega../sub NR/) x (1 + z/sub D/) = (ratio today of energy density of relativistic to nonrelativistic particles) x (1 + redshift of (decay)). We discuss the observational implications of such a cosmological model and compare our results to earlier results computed in the simultaneous decay approximation. In an appendix we briefly consider the case where one of the decay products of the X is massive and becomes nonrelativistic by the present epoch. 21 references.

Turner, M.S.

1984-09-01T23:59:59.000Z

52

Study of the decay asymmetry parameter and CP violation parameter in the Lambda(c)+ ---> Lambda pi+ decay  

SciTech Connect (OSTI)

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the weak decay-asymmetry parameter a{sub {Lambda}{sub c}} in {Lambda}{sub c}{sup +} {yields} {Lambda}{pi}{sup +} decay. Comparing particle with antiparticle decays, we obtain the first measurement of the CP violation parameter {Alpha} {triple_bond} a{sub {Lambda}{sub c}} + a{sub {ovr {Lambda}{sub c}}}/a{sub {Lambda}{sub c}} - a{sub {ovr {Lambda}{sub c}}}. We obtain a{sub {Lambda}{sub c}} = -0.78 {+-} 0.16 {+-} 0.13 and {Alpha} = -0.07 {+-} 0.19 {+-} 0.12 where errors are statistical and systematic.

Link, J.M.; Yager, P.M.; /UC, Davis; Anjos, J.C.; Bediaga, I.; Castromonte, C.; Machado, A.A.; Magnin, J.; Massafferri, A.; de Miranda, J.M.; Pepe, I.M.; Polycarpo, E.; dos Reis, A.C.; /Rio de Janeiro, CBPF; Carrillo, S.; Casimiro, E.; Cuautle, E.; Sanchez-Hernandez, A.; Uribe, C.; Vazquez, F.; /CINVESTAV, IPN; Agostino, L.; Cinquini, L.; Cumalat,; /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. /INFN, Milan /Milan U. /North Carolina U. /Pavia U. /INFN,

2005-09-01T23:59:59.000Z

53

Systematic Literature Search Doug Brutlag  

E-Print Network [OSTI]

;Details of PCNA Structure Search #12;PubMed Advanced Search http://www.ncbi.nlm.nih.gov/pubmed/advanced #12;PubMed Advanced Search http://www.ncbi.nlm.nih.gov/pubmed/advanced #12;PubMed Limits http://wwwSystematic Literature Search Doug Brutlag Professor Emeritus Biochemistry & Medicine Computational

54

Structure of {sup 81}Ga populated from the {beta}{sup -} decay of {sup 81}Zn  

SciTech Connect (OSTI)

We report on the results of the {beta}-decay of {sup 81}Zn. The experiment was performed at the CERN ISOLDE facility in the framework of a systematic ultra-fast timing investigation of neutron-rich nuclei populated in the decay of Zn. The present analysis included {beta}-gated {gamma}-ray singles and {gamma}-{gamma} coincidences from the decay of {sup 81}Zn to {sup 81}Ga and leads to a new and much more extensive level scheme of {sup 81}Ga. A new half-life of {sup 81}Zn is provided.

Paziy, V.; Mach, H.; Fraile, L. M.; Olaizola, B.; Udias, J. M. [Grupo de Fisica Nuclear, Universidad Complutense, Madrid (Spain); Aprahamian, A.; Bucher, B. [Department of Physics, University of Notre Dame (United States); Bernards, C. [Institut fuer Kernphysik, Koeln, Germany. and Wright Nuclear Structure Laboratory, Yale University, New Haven, CT-06520 (United States); Briz, J. A. [Instituto de Estructura de la Materia, CSIC, Madrid (Spain); Chiara, C. J. [Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA. and Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Dlouhy, Z. [Nuclear Physics Institute of the ASCR, Rez (Czech Republic); Gheorghe, I.; Ghita, D.; Lica, R.; Marginean, N.; Marginean, R.; Stanoiu, M.; Stroe, L. [National Institute for Physics and Nuclear Engineering, Magurele (Romania); Hoff, P. [Department of Chemistry, University of Oslo, Oslo (Norway); Koester, U. [Institut Laue Langevin, 6 Rue Jules Horowitz, F-38042 Grenoble Cedex 9 (France); and others

2013-06-10T23:59:59.000Z

55

Measurement of the asymmetry parameter for the decay {Lambda}{yields}p{pi}{sup +}  

SciTech Connect (OSTI)

Based on a sample of 58x10{sup 6}J/{psi} decays collected with the BESII detector at the BEPC, the {Lambda} decay parameter {alpha}{sub {Lambda}}for {Lambda}{yields}p{pi}{sup +} is measured using about 9000 J/{psi}{yields}{Lambda}{Lambda}{yields}pp{pi}{sup +{pi}-} decays. A fit to the joint angular distributions yields {alpha}{sub {Lambda}({Lambda}{yields}p{pi}{sup +})}=-0.755{+-}0.083{+-}0.063, where the first error is statistical, and the second systematic.

Ablikim, M.; Bai, J. Z.; Bai, Y.; Cai, X.; Chen, H. S.; Chen, H. X.; Chen, J. C.; Chen, Jin; Chen, Y. B.; Chu, Y. P.; Deng, Z. Y.; Du, S. X.; Fang, J.; Fu, C. D.; Gao, C. S.; Gu, S. D.; Guo, Y. N.; He, K. L.; Heng, Y. K.; Hu, H. M. [Institute of High Energy Physics, Beijing 100049 (China)

2010-01-01T23:59:59.000Z

56

Validation and Testing of ENDF/B-VII Decay Data  

SciTech Connect (OSTI)

The nuclear decay library developed for the ORIGEN code was upgraded from ENDF/B-VI.8 to -VII.0 and released in the SCALE nuclear modeling and simulation code system in 2011. Experience with the ENDF/B-VII.0 library identified serious errors and performance issues in the evaluated decay sublibrary. Initially, errors were identified in the decay scheme for the 238U series, leading to large discrepancies in the gamma emission rate for uranium. Further testing of the fission product decay data revealed significant performance issues with ENDF/B-VII.0 relative to the previous release of ENDF/B-VI. To address the performance issues, the decay data library in SCALE was upgraded to ENDF/B-VII.1 and released as an update for users in 2013. This paper describes the practical impact of the ENDF/B-VII.0 decay data performance issues on common code applications, and the validation and testing performed on the updated ORIGEN libraries developed from the ENDF/B-VII.1 sublibrary.

Gauld, Ian C [ORNL] [ORNL; Pigni, Marco T [ORNL] [ORNL; Ilas, Germina [ORNL] [ORNL

2014-01-01T23:59:59.000Z

57

Double Beta Decay Experiments  

SciTech Connect (OSTI)

At present, neutrinoless double beta decay is perhaps the only experiment that can tell us whether the neutrino is a Dirac or a Majorana particle. Given the significance of the 0{nu}{beta}{beta}, there is a widespread interest for these rare event studies employing a variety of novel techniques. This paper describes the current status of DBD experiments. The Indian effort for an underground NDBD experiment at the upcoming INO laboratory is also presented.

Nanal, Vandana [Dept. of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400 005 (India)

2011-11-23T23:59:59.000Z

58

Radioactive decay data tables  

SciTech Connect (OSTI)

The estimation of radiation dose to man from either external or internal exposure to radionuclides requires a knowledge of the energies and intensities of the atomic and nuclear radiations emitted during the radioactive decay process. The availability of evaluated decay data for the large number of radionuclides of interest is thus of fundamental importance for radiation dosimetry. This handbook contains a compilation of decay data for approximately 500 radionuclides. These data constitute an evaluated data file constructed for use in the radiological assessment activities of the Technology Assessments Section of the Health and Safety Research Division at Oak Ridge National Laboratory. The radionuclides selected for this handbook include those occurring naturally in the environment, those of potential importance in routine or accidental releases from the nuclear fuel cycle, those of current interest in nuclear medicine and fusion reactor technology, and some of those of interest to Committee 2 of the International Commission on Radiological Protection for the estimation of annual limits on intake via inhalation and ingestion for occupationally exposed individuals.

Kocher, D.C.

1981-01-01T23:59:59.000Z

59

Beta decay of Neutron-Rich 53-56Ca  

E-Print Network [OSTI]

Beta-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for 54Ca [86(7) ms], 55Ca [22(2) ms], and 56Ca [11(2) ms]. The half-life of 230(6) ms deduced for 53Ca is significantly longer than reported previously, where the decay chain 53K -> 53Ca -> 53Sc was considered. A delayed gamma ray with energy 247 keV as identified following beta decay of 54Ca, and is proposed to depopulate the first 1+ level in 54Sc. The beta-decay properties compare favorably with the results of shell model calculations completed in the full pf-space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross beta-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32.

P. F. Mantica; R. Broda; H. L. Crawford; A. Damaske; B. Fornal; A. A. Hecht; C. Hoffman; M. Horoi; N. Hoteling; R. V. F. Janssens; J. Pereira; J. S. Pinter; J. B. Stoker; S. L. Tabor; T. Sumikama; W. B. Walters; X. Wang; S. Zhu

2008-01-07T23:59:59.000Z

60

7000 Series MODIFIED MICROLITERTM  

E-Print Network [OSTI]

. This syringe series is unique, as the sample is held in the stainless steel needle. The tungsten plunger wire resistance to plunger movement is felt. Use of pliers on the knurled hub nut may be required to achieve this tightness. The black PTFE-coated plunger sleeve makes it easy to read the exact volume. Two sizes of spacers

Kleinfeld, David

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Energy Management Webinar Series  

Broader source: Energy.gov [DOE]

Boost your knowledge on how to implement an energy management system through this four-part webinar series from the Superior Energy Performance program. Each webinar introduces various elements of the ISO 50001 energy management standard—based on the Plan-Do-Check-Act approach—and the associated steps of DOE's eGuide for ISO 50001 software tool.

62

Global Health Seminar Series  

E-Print Network [OSTI]

Bay Area Global Health Seminar Series Moving beyond millennium targets in global health: The challenges of investing in health and universal health coverage Although targets can help to focus global health efforts, they can also detract attention from deeper underlying challenges in global health

Klein, Ophir

63

Global Health Seminar Series  

E-Print Network [OSTI]

Bay Area Global Health Seminar Series Monday, January 27, 2014 2:30pm ­ 4:00pm (Reception to follow at the Center for Health Policy and the Woods Institute for the Environment. He studies how economic, political, and natural environments affect population health in developing countries using a mix of experimental

Klein, Ophir

64

FIP Bias Evolution in a Decaying Active Region  

E-Print Network [OSTI]

Solar coronal plasma composition is typically characterized by first ionization potential (FIP) bias. Using spectra obtained by Hinode's EUV Imaging Spectrometer (EIS) instrument, we present a series of large-scale, spatially resolved composition maps of active region (AR) 11389. The composition maps show how FIP bias evolves within the decaying AR from 2012 January 4-6. Globally, FIP bias decreases throughout the AR. We analyzed areas of significant plasma composition changes within the decaying AR and found that small-scale evolution in the photospheric magnetic field is closely linked to the FIP bias evolution observed in the corona. During the AR's decay phase, small bipoles emerging within supergranular cells reconnect with the pre-existing AR field, creating a pathway along which photospheric and coronal plasmas can mix. The mixing time scales are shorter than those of plasma enrichment processes. Eruptive activity also results in shifting the FIP bias closer to photospheric in the affected areas. Final...

Baker, D; Démoulin, P; Yardley, S L; van Driel-Gesztelyi, L; Long, D M; Green, L M

2015-01-01T23:59:59.000Z

65

Radiative ?(1S) decays  

E-Print Network [OSTI]

— wW~ ii~ ~ + v~ 1''&WV'' V 0.20 0.45 0.70 ~y ~ EBFA~ 0.95 l.20 FIG. 4. Energy spectrum (normalized to beam energy) for Y~y2(h+h ) event candidates, with continuum data and ex- pected background from Y~m 2(h +h ) overplotted. 40 30— ~ 20— LLI IO— hl...PHYSICAL REVIEW 0 VOLUME 41, NUMBER 5 Radiative T(lS) decays 1 MARCH 1990 R. Fulton, M. Hempstead, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, F. Morrow, and J. Whitmore Ohio State University, Columbus, Ohio 43210 W.-Y. Chen, J. Dominick, R. L. Mc...

Baringer, Philip S.

1990-03-01T23:59:59.000Z

66

Rare B Decays  

SciTech Connect (OSTI)

Recent results from Belle and BaBar on rare B decays involving flavor-changing neutral currents or purely leptonic final states are presented. Measurements of the CP asymmetries in B {yields} K*{gamma} and b {yields} s{gamma} are reported. Also reported are updated limits on B{sup +} {yields} K{sup +}{nu}{bar {nu}}, B{sup +} {yields} {tau}{sup +}{nu}, B{sup +} {yields} {mu}{sup +}{nu} and the recent measurement of B {yields} X{sub s}{ell}{sup +}{ell}{sup -}.

Jackson, P.D.; /Victoria U.

2006-02-24T23:59:59.000Z

67

Dark decay of Top quark  

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

We suggest top quark decays as a venue to search for light dark force carriers. Top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as well as the 3.6 ? deviation in the muon g-2 measurement. We present and study a possible scenario that top quark decays as t ? b W + Z's. This is the same as the dominant top quark decay (t ? b W) accompanied by one or multiple dark force carriers. The Z' can be easily boosted, and it can decay into highly collimated leptons (lepton-jet) with large branching ratio. We discuss the implications for the Large Hadron Collider experiments including the analysis based on the lepton-jets.

Kong, Kyoungchui [Kansas; Lee, Hye-Sung [W&M, JLAB; Park, Myeonhun [Tokyo

2014-04-01T23:59:59.000Z

68

Functional Power Series  

E-Print Network [OSTI]

This work introduces a new functional series for expanding an analytic function in terms of an arbitrary analytic function. It is generally applicable and straightforward to use. It is also suitable for approximating the behavior of a function with a few terms. A new expression is presented for the composite function's n'th derivative. The inverse-composite method is handled in this work also.

Henrik Stenlund

2012-04-24T23:59:59.000Z

69

Multiple Alignment of Continuous Time Series Jennifer Listgarten y , Radford M. Neal y , Sam T. Roweis y and Andrew Emili z  

E-Print Network [OSTI]

Multiple Alignment of Continuous Time Series Jennifer Listgarten y , Radford M. Neal y , Sam T of continuous­valued time series from a stochastic process often contain systematic variations in rate time series generated by a noisy, stochastic process, large sys­ tematic sources of variability

Roweis, Sam

70

Introduction to Double Beta Decay  

SciTech Connect (OSTI)

While the neutrino oscillation experiments have measured non-zero square mass differences between neutrino flavors, the double beta decay is the most sensitive process to the absolute mass of the neutrinos and the only that can distinguish whether neutrino is a Dirac or a Majorana particle. These are a few but not the only reasons that many efforts, both theoretically and experimentally, are dedicated to the study of this process. In this lecture I'll give a short introduction to the double beta decay process. Different decay modes and mechanisms, a short history, decay rates and extraction of the neutrino mass parameter are presented.

Stoica, Sabin [Horia Hulubei National Institute for Physics and Nuclear Engineering, P.O. Box MG-6, 077125 Magurele (Romania); Horia Hulubei Foundation, 407, Atomistilor street, 077125 Magurele (Romania)

2010-11-24T23:59:59.000Z

71

Fundamental Frequency Equivalenting Of Series Capacitors  

E-Print Network [OSTI]

series compensated line with Series Capacitors (SCs) and their Metal-Oxide Varistors (MOVs) installed in

With Movs In

72

Formation of $??$ atoms in $K_{?4} decay  

E-Print Network [OSTI]

We derive the decay rate of $\\pi\\mu$ atom formation in $K_{\\mu 4}$ decay. Using the obtained expressions we calculate the decay rate of atom formation and point out that considered decay can give a noticeable contribution as a background to the fundamental decay $K^+\\to \\pi^+\

S. R. Gevorkyan; A. V. Tarasov; O. O. Voskresenskaya

2009-12-01T23:59:59.000Z

73

A Calorimetric Search on Double Beta Decay of 130Te  

E-Print Network [OSTI]

We report on the final results of a series of experiments on double decay of 130Te carried out with an array of twenty cryogenic detectors. The set-up is made with crystals of TeO2 with a total mass of 6.8 kg, the largest operating one for a cryogenic experiment. Four crystals are made with isotopically enriched materials: two in 128Te and two others in 130Te. The remaining ones are made with natural tellurium, which contains 31.7 % and 33.8 % 128Te and 130Te, respectively. The array was run under a heavy shield in the Gran Sasso Underground Laboratory at a depth of about 3500 m.w.e. By recording the pulses of each detector in anticoincidence with the others a lower limit of 2.1E23 years has been obtained at the 90 % C.L. on the lifetime for neutrinoless double beta decay of 130Te. In terms of effective neutrino mass this is the most restrictive limit in direct experiments, after those obtained with Ge diodes. Limits on other lepton violating decays of 130Te and on the neutrinoless double beta decay of 128Te to the ground state of 128Xe are also reported and discussed. An indication is presented for the two neutrino double beta decay of 130Te. Some consequences of the present results in the interpretation of geochemical experiments are discussed.

C. Arnaboldi; C. Brofferio; C. Bucci; S. Capelli; O. Cremonesi; E. Fiorini; A. Giuliani; A. Nucciotti; M. Pavan; M. Pedretti; G. Pessina; S. Pirro; C. Pobes; E. Previtali; M. Sisti; M. Vanzini

2003-02-25T23:59:59.000Z

74

Resource characterization series (final)  

SciTech Connect (OSTI)

Coals from the Princess Reserve District in northeastern Kentucky were obtained from the R-series cores and from Kentucky Geological Survey collections. The coals span the stratigraphic section from the Bruin coal near the base of the Breathitt Formation to a coal near the top of the Conemaugh Formation. The Princess District coals are high volatile C and B bituminous. High volatile A bituminous coals occur in southern Lawrence County. Reflectance highs and reactive maceral lows were noted in the Princess 3 and Princess 7 coals in along a north-south trend which may be parallel to the Waverly Arch.

Hower, J.C.; Wild, G.D.

1981-01-01T23:59:59.000Z

75

$?$ Meson In $J/?$ Decays  

E-Print Network [OSTI]

Recently BES at BEPC found evidence for the existence of the $\\sigma$ meson in the process of $J/\\Psi \\to \\sigma\\omega \\to\\pi\\pi\\omega$. In this paper we firstly discuss the relevant coupling $g_{\\sigma\\pi\\pi}$ and show that the linear $\\sigma$ model gives rise to a reasonable description of the $\\sigma$ decay into $\\pi$'s, then we calculate the coupling constant $g^{th}_{J/\\Psi\\sigma\\omega}$ by using the perturbative QCD technique and the light-cone wave functions of the $\\sigma$ and $\\omega$ mesons. The results show that the theoretical value of $g^{th}_{J/\\Psi\\sigma\\omega}$ is within the range of experimental value $g_{J/\\Psi\\sigma\\omega}$.

Wujun Huo; Xinmin Zhang; Tao Huang

2002-03-20T23:59:59.000Z

76

Branching Fraction Measurement of B to omega l nu decays  

SciTech Connect (OSTI)

We present a measurement of the B{sup +} {yields} {omega}{ell}{sup +}{nu} branching fraction based on a sample of 467 million B{bar B} pairs recorded by the BABAR detector at the SLAC PEP-II e{sup +}e{sup -} collider. We observe 1041 {+-} 133 signal decays, corresponding to a branching fraction of {Beta}(B{sup +} {yields} {omega}{ell}{sup +}{nu}) = (1.15 {+-} 0.15 {+-} 0.12) x 10{sup -4}, where the first error is statistical and the second is systematic. The dependence of the decay rate on q{sup 2}, the momentum transfer squared to the lepton system, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.

Lees, J.P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Palano, A.; /Bari U. /INFN, Bari; Eigen, G.; Stugu, B.; /Bergen U.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; /LBL, Berkeley /UC, Berkeley; Koch, H.; Schroeder, T.; /Ruhr U., Bochum; Asgeirsson, D.J.; Hearty, C.; Mattison, T.S.; McKenna, J.A.; So, R.Y.; /British Columbia U.; Khan, A.; /Brunel U.; Blinov, V.E.; /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /Ferrara U. /INFN, Ferrara /Frascati /Genoa U. /INFN, Genoa /Indian Inst. Tech., Guwahati /Harvard U. /Harvey Mudd Coll. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U., Comp. Sci. Dept. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U. /Milan U. /INFN, Milan /Mississippi U. /Montreal U. /Naples U. /INFN, Naples /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U.; /more authors..

2012-06-13T23:59:59.000Z

77

ATLAS sensitivity to Wtb anomalous couplings in top quark decays  

E-Print Network [OSTI]

We study the sensitivity of the ATLAS experiment to Wtb anomalous couplings in top pair production with semileptonic decay, pp -> t tbar -> W+ b W- bbar, with one of the W bosons decaying leptonically and the other hadronically. Several observables are examined, including the W helicity fractions and new quantities recently introduced, such as the ratios of helicity fractions and some angular asymmetries defined in the W rest frame. The dependence on anomalous couplings of all these observables has been previously obtained. In this work we show that some of the new observables also have smaller systematic uncertainties than the helicity fractions, with a dependence on anomalous couplings similar or stronger than for helicity fractions. Consequently, their measurement can significantly improve the limits on anomalous couplings. Moreover, the most sensitive measurements can be combined. In this case, the precision achieved in the determination of Wtb anomalous couplings can be of a few percent in the semileptonic channel alone.

J. A. Aguilar-Saavedra; J. Carvalho; N. Castro; A. Onofre; F. Veloso

2007-12-17T23:59:59.000Z

78

Search for neutrinoless decays of the ? lepton  

E-Print Network [OSTI]

We have searched for neutrinoless ? decays into three charged particles. Evidence of such decays would demonstrate nonconservation of lepton flavor and, in some cases, lepton number. We see no signal for any such neutrinoless ? decays and set upper...

Baringer, Philip S.

1990-02-01T23:59:59.000Z

79

Precision Measurement of the Neutron Beta-Decay Asymmetry  

E-Print Network [OSTI]

A new measurement of the neutron $\\beta$-decay asymmetry $A_0$ has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to $A_0 = -0.11954(55)_{\\rm stat.}(98)_{\\rm syst.}$, corresponding to the ratio of axial-vector to vector coupling $\\lambda \\equiv g_A/g_V = -1.2756(30)$.

M. P. Mendenhall; R. W. Pattie Jr; Y. Bagdasarova; D. B. Berguno; L. J. Broussard; R. Carr; S. Currie; X. Ding; B. W. Filippone; A. García; P. Geltenbort; K. P. Hickerson; J. Hoagland; A. T. Holley; R. Hong; T. M. Ito; A. Knecht; C. -Y. Liu; J. L. Liu; M. Makela; R. R. Mammei; J. W. Martin; D. Melconian; S. D. Moore; C. L. Morris; A. Pérez Galván; R. Picker; M. L. Pitt; B. Plaster; J. C. Ramsey; R. Rios; A. Saunders; S. J. Seestrom; E. I. Sharapov; W. E. Sondheim; E. Tatar; R. B. Vogelaar; B. VornDick; C. Wrede; A. R. Young; B. A. Zeck

2013-02-19T23:59:59.000Z

80

Precision Measurement of the Neutron Beta-Decay Asymmetry  

E-Print Network [OSTI]

A new measurement of the neutron $\\beta$-decay asymmetry $A_0$ has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to $A_0 = -0.11954(55)_{\\rm stat.}(98)_{\\rm syst.}$, corresponding to the ratio of axial-vector to vector coupling $\\lambda \\equiv g_A/g_V = -1.2756(30)$.

Mendenhall, M P; Bagdasarova, Y; Berguno, D B; Broussard, L J; Carr, R; Clayton, S; Currie, S; Ding, X; García, A; Geltenbort, P; Hickerson, K P; Hoagland, J; Hogan, G E; Holley, A T; Hong, R; Ito, T M; Filippone, B W; Knecht, A; Liu, C -Y; Liu, J L; Makela, M; Mammei, R R; Martin, J W; Melconian, D; Moore, S D; Morris, C L; Galván, A Pérez; Picker, R; Pitt, M L; Plaster, B; Rios, R; Saunders, A; Seestrom, S J; Sondheim, W E; Tatar, E; Vogelaar, R B; VornDick, B; Wrede, C; Young, A R; Zeck, B A

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Double Beta Decay  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to UserProduct:Directives Templates8. U.S.Donald R. Baer d37154DoorsDouble

82

Beta-decay spectroscopy relevant to the r-process nucleosynthesis  

SciTech Connect (OSTI)

A scientific program of beta-decay spectroscopy relevant to r-process nucleosynthesis has been started using high intensity U-beam at the RIBF. The first results of {beta}-decay half-lives of very neutron-rich Kr to Tc nuclides, all of which lie close to the r-process path, suggest a systematic enhancement of the the {beta}-decay rates of the Zr and Nb isotopes around A110 with respect to the predictions of the deformed quasiparticle-random-phase-approximation model (FRDM + QRPA). An impact of the results on the astrophysical r-process is discussed together with the future perspective of the {beta}-decay spectroscopy with the EURICA.

Nishimura, Shunji [RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Collaboration: RIBF Decay Collaboration

2012-11-12T23:59:59.000Z

83

First observation of /sup 162/Hf decay completion of an alpha -decay chain  

E-Print Network [OSTI]

The new isotope /sup 162/Hf (T/sub 1/2/=(37.6+or-0.8)s) is produced in a /sup 142/Nd (/sup 24/Mg,4n) reaction. The activities produced in this reaction are transported to a measuring station by use of a He- jet system. Decay properties are observed with alpha -, gamma -, and gamma - gamma -spectroscopy. The Z-assignment of the new isotope is based on a cross bombardment on /sup 141/Pr target and on the results of a gamma -X-ray coincidence measurement. The mass assignment is deduced from the excitation function measurements. From the measured alpha -decay energy E/sub alpha /=4308 (10) keV new mass values are derived for /sup 162/Hf, /sup 166/W, /sup 170/Os, /sup 174/Pt, and /sup 178/Hg. These new mass values make it possible to establish systematics of two-proton and one-proton binding energies far from stability. (20 refs).

Schrewe, U J; Hagberg, E; Hardy, J C; Koslowsky, V T; Schmeing, H; Sharma, K S

1981-01-01T23:59:59.000Z

84

Wave Decay in MHD Turbulence  

E-Print Network [OSTI]

We present a model for nonlinear decay of the weak wave in three-dimensional incompressible magnetohydrodynamic (MHD) turbulence. We show that the decay rate is different for parallel and perpendicular waves. We provide a general formula for arbitrarily directed waves and discuss particular limiting cases known in the literature. We test our predictions with direct numerical simulations of wave decay in three-dimensional MHD turbulence, and discuss the influence of turbulent damping on the development of linear instabilities in the interstellar medium and on other important astrophysical processes.

Andrey Beresnyak; Alex Lazarian

2008-05-06T23:59:59.000Z

85

Neutrinoless Double Beta Decay Constraints  

E-Print Network [OSTI]

A brief overview is given of theoretical analyses with neutrinoless double beta decay experiments. Theoretical bounds on the ``observable'', _betabeta, are presented. By using experimental bounds on _betabeta, allowed regions are obtained on the m_l-cos{2theta_12} plane, where m_l stands for the lightest neutrino mass. It is shown that Majorana neutrinos can be excluded by combining possible results of future neutrinoless double beta decay and {}^3H beta decay experiments. A possibility to constrain one of two Majorana phases is discussed also.

Hiroaki Sugiyama

2003-07-25T23:59:59.000Z

86

Double beta decay: present status  

E-Print Network [OSTI]

The present status of double beta decay experiments (including the search for $2\\beta^{+}$, EC$\\beta^{+}$ and ECEC processes) are reviewed. The results of the most sensitive experiments are discussed. Average and recommended half-life values for two-neutrino double beta decay are presented. Conservative upper limits on effective Majorana neutrino mass and the coupling constant of the Majoron to the neutrino are established as $ beta decay experiments with a sensitivity for the $$ at the level of (0.01-0.1) eV are considered.

A. S. Barabash

2008-07-18T23:59:59.000Z

87

Alternative systematic approaches to training  

SciTech Connect (OSTI)

This handbook is approved for use by all DOE Components and contractors. The handbook was prepared primarily for DOE nuclear facilities, but the information can be effectively used by any other type of facility. DOE nuclear, DOE non-nuclear, commercial nuclear reactor, fuel fabrication, chemical processing, or other types of facilities may also apply the principles of this approach and find it useful and applicable to local needs. The handbook provides DOE and contractor operating organizations with concepts and guidance regarding the use of alternative techniques to implement a systematic approach to training (SAT). The techniques described in this handbook are endorsed by DOE and use of the guidance in this handbook is appropriate for establishment of technical training programs at DOE nuclear facilities. The use of guidance on selection and implementation of appropriate training approaches after consideration of job complexity, the consequences of error based on risk/hazard potential, and available training media should result in effective and efficient training programs. The information presented in this handbook can be used to grade the level of effort and formality used in developing training programs.

Not Available

1995-01-01T23:59:59.000Z

88

Computer code for double beta decay QRPA based calculations  

E-Print Network [OSTI]

. The Enriched Xenon Observatory for neutrinoless double beta decay (EXO) will search for the rare decays

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

89

The decay of hot nuclei  

SciTech Connect (OSTI)

The formation of hot compound nuclei in intermediate-energy heavy ion reactions is discussed. The statistical decay of such compound nuclei is responsible for the abundant emission of complex fragments and high energy gamma rays. 43 refs., 23 figs.

Moretto, L.G.; Wozniak, G.J.

1988-11-01T23:59:59.000Z

90

Neutrinoless Double Beta-Decay  

E-Print Network [OSTI]

The neutrinoless double $\\beta$-decay of nuclei is reviewed. We discuss neutrino mixing and 3x3 PMNS neutrino mixing matrix. Basic theory of neutrinoless double $\\beta$-decay is presented in some details. Results of different calculations of nuclear matrix element are discussed. Experimental situation is considered. The Appendix is dedicated to E. Majorana (brief biography and his paper in which the theory of Majorana particles is given)

S. M. Bilenky

2010-01-12T23:59:59.000Z

91

One hundred years ago: The birth of uranium-series science Gideon Henderson  

E-Print Network [OSTI]

an almost complete picture of the three naturally occurring decay series. This preface provides a brief this name was coined (by Marie Curie) and the phenonomen was initially termed "Becquerel" radiation, or "uranic" radiation. This discovery was pursued by Marie Curie who checked the radioactivity of many

Henderson, Gideon

92

Search for the highly suppressed decays B- -> K+ pi- pi- and B- -> K- K- pi+  

E-Print Network [OSTI]

We report a search for the decays B- -> K+ pi- pi- and B- -> K- K- pi+, which are highly suppressed in the Standard Model. Using a sample of (467 +/- 5) x 10^6 BBbar pairs collected with the BaBar detector, we do not see any evidence of these decays and determine 90% confidence level upper limits of BF(B- -> K+ pi- pi-) K- K- pi+) < 1.6 x 10^-7 on the corresponding branching fractions, including systematic uncertainties.

The BABAR Collaboration; B. Aubert

2008-11-14T23:59:59.000Z

93

Beta and gamma decays April 9, 2002  

E-Print Network [OSTI]

Beta and gamma decays April 9, 2002 1 Simple Fermi theory of beta decay ² Beta decay is one by the emission of a positive or negative beta particle (positron or electron). To ensure conservation of lepton emitted in beta decay is a continuum of energies, up to a maximum value, with most emitted betas having

Landstreet, John D.

94

IMPORTANCE OF NEUTRINOLESS DOUBLE BETA DECAY Abstract  

E-Print Network [OSTI]

number violation in nature and what is its magnitude. The neutrinoless double beta decay experiment can

U. Sarkar; Utpal Sarkar

95

Nuclear structure relevant to neutrinoless double beta decay candidate {sup 130}Te and other recent results  

SciTech Connect (OSTI)

We have undertaken a series of single-nucleon and pair transfer reaction measurements to help constrain calculations of the nuclear matrix elements for neutrinoless double beta decay. In this talk, a short overview of measurements relevant to the {sup 130}Te?{sup 130}Xe system is given. Brief mention is made of other recent and forthcoming results.

Kay, B. P. [Physics Division, Argonne National Laboratory, Illinois 60439 (United States)

2013-12-30T23:59:59.000Z

96

Experimental charmonium decay results from BES  

E-Print Network [OSTI]

Based on 14 million psi(2S) and 58 million J/psi events collected by the BESII detector, the leptonic decay of psi(2S) into $\\tau^+\\tau^-$, psi(2S) multi-body decays, chi_cJ decays, and J/psi hadronic decays are studied, and the branching fractions of these decays are reported. These results may shed light on the understanding of QCD.

Ping Rong-Gang; F. A. Harris; for BES collaboration

2007-11-23T23:59:59.000Z

97

Marcellus Shale Educational Webinar Series  

E-Print Network [OSTI]

#12;Marcellus Shale Litigation and Legislation December 17, 2009 7 . Pennsylvania Oil and Gas Law1 Marcellus Shale Educational Webinar Series October 2009 - March 2010 Penn State Cooperative Extension #12;2 Marcellus Shale Webinar Series Planning Committee · Members ­ Mark Douglass, Jefferson

Boyer, Elizabeth W.

98

Some applications of wavelets to time series data  

E-Print Network [OSTI]

stationary time series {Xt} is said to have long memory when long memory parameter d is between 0 and 0.5. Many methods of estimating long memory parameter based on its decay rate of autocorrelation or behavior of spectral density around zero have been....For consistency, some people consider the original dataXt asv0,t. Due to decimating property, we haveN/2j wavelet and scaling coefficients at levelj. The constraint on sample size, N = 2J can be relaxed by considering partial discrete wavelet transform. 2...

Jeong, Jae Sik

2009-05-15T23:59:59.000Z

99

Study of the decay Ds+ --> K+ K- e+ nu  

E-Print Network [OSTI]

Using 214 fb-1 of data recorded by the Babar detector at the PEPII electron-positron collider, we study the decay Ds+ --> K+ K- e+ nu. Except for a small S-wave contribution, the events with K+K- masses in the range 1.01-1.03 GeV/c2 correspond to phi mesons. For Ds+ --> phi e+ nu decays, we measure the relative normalization of the Lorentz invariant form factors at q2=0, rV=V(0)/A1(0)=1.849 +/- 0.060 +/- 0.095, r2=A2(0)/A1(0)=0.763 +/- 0.071 +/- 0.065 and the pol e mass of the axial-vector form factors mA=(2.28^{+0.23}_{-0.18}+/- 0.18) GeV/c2. Within the same K+K- mass range, we also measure the relative branching fraction B(Ds+ --> K + K- e+ nu)/B(Ds+ --> K+ K- pi+)=0.558 +/- 0.007 +/- 0.016, from which we obtain the total branching fraction B(Ds+ --> phi e+ nu) = (2.61 +/- 0.03 +/- 0.08 +/- 0.15)* 10^{-2}. By comparing this value with the predicted decay rate, we extract A1(0) = 0.607 +/- 0.011 +/- 0.019 +/- 0.018. The stated uncertainties are statistical, systematic, and from external inputs.

The BABAR Collaboration; B. Aubert

2008-07-10T23:59:59.000Z

100

Signature of nonexponential nuclear decay  

E-Print Network [OSTI]

Precision tests of decay law of radioactive nuclei have not so far found any deviation from the exponential decay law at early time, as predicted by quantum mechanics. In this paper, we show that the quantum decoherence time (i.e. the timescale of nonexponential decay) of the quasifission or fission process should be of the order of attosecond considering the atom of the fissioning nucleus as a quantum detector. Hence, the observed decay timescale of the quasifission or fission process of even highly excited (EX greater than 50 MeV) transuranium and uraniumlike complexes should be rather long (of the order of attosecond) in spite of their very fast exponential decay timescale (of the order of zeptosecond) as measured by the nuclear techniques. Recent controversy regarding the observation of very long (of the order of attosecond ) and very short (of the order of zeptosecond ) quasifission or fission timescales for similar systems at similar excitation energies as obtained by direct techniques (crystal blocking...

Ray, A; De, A

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Systematic Analysis of Frontier Energy Collider Data  

E-Print Network [OSTI]

Ignorance of the form new physics will take suggests the importance of systematically analyzing all data collected at the energy frontier, with the goal of maximizing the chance for discovery both before and after the turn on of the LHC.

Bruce Knuteson

2005-04-23T23:59:59.000Z

102

From peaks to continua: the study of delayed proton decay among light nuclei (A < 100)  

E-Print Network [OSTI]

Delayed proton precursors among nuclei with Adecay is seen to apply reasonably well both to the heavier precursors in the T/sub z/=+1/2 series and, perhaps unexpectedly, to some of the lightest in the T/sub z/=-3/2 series. New experimental results are also given for the T/sub z/=+1/2 series which yield average partial widths and level densities. A new method for measuring the lifetimes of proton emitting levels in the 10/sup -16/ s region is described and applied to the decay of /sup 69/Se. (19 refs).

Hardy, J C

1976-01-01T23:59:59.000Z

103

Phi decay: a relevant source for K- production at SIS energies?  

E-Print Network [OSTI]

We present phase space distributions and multiplicities of K+, K- and phi mesons produced in Ar+KCl reactions at a kinetic beam energy of 1.756 AGeV and measured with the HADES spectrometer. The inverse slope parameters and yields of kaons supplement the systematics of previous measurements. The percentage of K- mesons coming fromphi decay is found to be 18+- 7%.

The HADES Collaboration; G. Agakishiev; A. Balanda; B. Bannier; R. Bassini; D. Belver; A. V. Belyaev; A. Blanco; M. Boehmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Diaz; F. Dohrmann; A. Dybczak; T. Eberl; W. Enghardt; L. Fabbietti; O. V. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Froehlich; T. Galatyuk; J. A. Garzon; R. Gernhaeuser; A. Gil1; C. Gilardi; M. Golubeva; D. Gonzalez-Diaz; F. Guber; M. Heilmann; T. Heinz; T. Hennino; R. Holzmann; A. Ierusalimov; I. Iori; A. Ivashkin; M. Jurkovic; B. Kaempfer; K. Kanaki; T. Karavicheva; D. Kirschner; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; F. Krizek; R. Kruecken; W. Kuehn; A. Kugler; A. Kurepin; S. Lang; J. S. Lange; K. Lapidus; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Markert; V. Metag; B. Michalska; J. Michel; D. Mishra; E. Moriniere; J. Mousa; C. Muentz; L. Naumann; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; T. PerezCavalcanti; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; M. Roy-Stephan; A. Rustamov; A. Sadovsky; B. Sailer; P. Salabura; A. Schmah; E. Schwab; Yu. G. Sobolev; S. Spataro; B. Spruck; H. Stroebele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebac; H. Tsertos; V. Wagner; M. Weber; M. Wisniowski; T. Wojcik; J. Wuestenfel; S. Yurevich; Y. V. Zanevsky; P. Zhou; P. Zumbruch

2009-02-20T23:59:59.000Z

104

Predicting Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We give predictions for the neutrinoless double beta decay rate in a simple variant of the A_4 family symmetry model. We show that there is a lower bound for the neutrinoless double beta decay amplitude even in the case of normal hierarchical neutrino masses, corresponding to an effective mass parameter |m_{ee}| >= 0.17 \\sqrt{\\Delta m^2_{ATM}}. This result holds both for the CP conserving and CP violating cases. In the latter case we show explicitly that the lower bound on |m_{ee}| is sensitive to the value of the Majorana phase. We conclude therefore that in our scheme, neutrinoless double beta decay may be accessible to the next generation of high sensitivity experiments.

M. Hirsch; Ernest Ma; J. W. F. Valle; A. Villanova del Moral

2005-07-12T23:59:59.000Z

105

Neutrinoless Double Beta Decay Experiments  

E-Print Network [OSTI]

Neutrinoless double beta decay is the only process known so far able to test the neutrino intrinsic nature: its experimental observation would imply that the lepton number is violated by two units and prove that neutrinos have a Majorana mass components, being their own anti-particle. While several experiments searching for such a rare decay have been performed in the past, a new generation of experiments using different isotopes and techniques have recently released their results or are taking data and will provide new limits, should no signal be observed, in the next few years to come. The present contribution reviews the latest public results on double beta decay searches and gives an overview on the expected sensitivities of the experiments in construction which will be able to set stronger limits in the near future.

Alberto Garfagnini

2014-08-11T23:59:59.000Z

106

Neutrinoless Double Beta Decay Experiments  

E-Print Network [OSTI]

Neutrinoless double beta decay is the only process known so far able to test the neutrino intrinsic nature: its experimental observation would imply that the lepton number is violated by two units and prove that neutrinos have a Majorana mass components, being their own anti-particle. While several experiments searching for such a rare decay have been performed in the past, a new generation of experiments using different isotopes and techniques have recently released their results or are taking data and will provide new limits, should no signal be observed, in the next few years to come. The present contribution reviews the latest public results on double beta decay searches and gives an overview on the expected sensitivities of the experiments in construction which will be able to set stronger limits in the near future.

Garfagnini, Alberto

2014-01-01T23:59:59.000Z

107

Benchmarking of energy time series  

SciTech Connect (OSTI)

Benchmarking consists of the adjustment of time series data from one source in order to achieve agreement with similar data from a second source. The data from the latter source are referred to as the benchmark(s), and often differ in that they are observed at a lower frequency, represent a higher level of temporal aggregation, and/or are considered to be of greater accuracy. This report provides an extensive survey of benchmarking procedures which have appeared in the statistical literature, and reviews specific benchmarking procedures currently used by the Energy Information Administration (EIA). The literature survey includes a technical summary of the major benchmarking methods and their statistical properties. Factors influencing the choice and application of particular techniques are described and the impact of benchmark accuracy is discussed. EIA applications and procedures are reviewed and evaluated for residential natural gas deliveries series and coal production series. It is found that the current method of adjusting the natural gas series is consistent with the behavior of the series and the methods used in obtaining the initial data. As a result, no change is recommended. For the coal production series, a staged approach based on a first differencing technique is recommended over the current procedure. A comparison of the adjustments produced by the two methods is made for the 1987 Indiana coal production series. 32 refs., 5 figs., 1 tab.

Williamson, M.A.

1990-04-01T23:59:59.000Z

108

The summation of certain series  

E-Print Network [OSTI]

inf1nite series. As an 1llustration, it can be shown by one of the methods to be developed that the ser1es / / / Z converge s to the number 1. The number I, then, is said to be the sum, or value, of the ser1es wr1tten 1n the form of a closed... expression. As a second examole, consider the series, / / / + ? +. ? /2 gs ~z 7/* whose sum will be shown to be ? . Again the number 6 J 6 is sa1d to be a closed form for the sum of the given series. In this case, however, obJection might possibly...

Holder, Leonard Irvin

2012-06-07T23:59:59.000Z

109

Performance indicators for public mental healthcare: A systematic international inventory  

E-Print Network [OSTI]

a systematic international inventory. BMC Public Health 2012Mental Health: National inventory of mental health qualitya systematic international inventory Steve Lauriks 1,2* ,

Lauriks, Steve; Buster, Marcel CA; de Wit, Matty AS; Arah, Onyebuchi A; Klazinga, Niek S

2012-01-01T23:59:59.000Z

110

Power Series Power series are one of the most useful type of series in analysis. For example,  

E-Print Network [OSTI]

Chapter 6 Power Series Power series are one of the most useful type of series in analysis functions (and many other less familiar functions). 6.1. Introduction A power series (centered at 0 coefficients. If all but finitely many of the an are zero, then the power series is a polynomial function

Hunter, John K.

111

A Search for Neutrinoless Double Beta Decay of Te-130  

E-Print Network [OSTI]

far unobserved, neutrinoless double beta decay is a possibleright for the neutrinoless double beta decay of 130 Te. Thisprocess, with neutrinoless double beta decay being the most

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

112

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

Limits From Neutrinoless Double-Beta Decay (Rev. ),” ina next generation neutrinoless double beta decay search andPARTICLES? NO NEUTRINOLESS DOUBLE BETA DECAY AND INVERTED

Bahcall, John N.

2009-01-01T23:59:59.000Z

113

Theoretical uncertainties in the nuclear matrix elements of neutrinoless double beta decay: The transition operator  

SciTech Connect (OSTI)

We explore the theoretical uncertainties related to the transition operator of neutrinoless double-beta (0???) decay. The transition operator used in standard calculations is a product of one-body currents, that can be obtained phenomenologically as in Tomoda [1] or Šimkovic et al. [2]. However, corrections to the operator are hard to obtain in the phenomenological approach. Instead, we calculate the 0??? decay operator in the framework of chiral effective theory (EFT), which gives a systematic order-by-order expansion of the transition currents. At leading orders in chiral EFT we reproduce the standard one-body currents of Refs. [1] and [2]. Corrections appear as two-body (2b) currents predicted by chiral EFT. We compute the effects of the leading 2b currents to the nuclear matrix elements of 0??? decay for several transition candidates. The 2b current contributions are related to the quenching of Gamow-Teller transitions found in nuclear structure calculations.

Menéndez, Javier [Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt (Germany)

2013-12-30T23:59:59.000Z

114

Solar Permitting & Inspection Webinar Series  

Office of Energy Efficiency and Renewable Energy (EERE)

ICLEI Local Governments for Sustainability U.S.A. and the Interstate Renewable Energy Council, Inc. (IREC) present a series of three webinars on Solar Permitting & Inspection. As part of the U...

115

ECOLOGY AND EVOLUTION SEMINAR SERIES*  

E-Print Network [OSTI]

ECOLOGY AND EVOLUTION SEMINAR SERIES* WINTER 2013 ECL 296 (CRN 50337) / PBG 292 (CRN 64677 24 The Modern Ecology of Ice-Covered Lakes in Antarctica: A Journey Back JANUARY 31 Lizards in an Evolutionary Tree: Ecology and Adaptive Radiation

Ishida, Yuko

116

Castle series, 1954. Technical report  

SciTech Connect (OSTI)

CASTLE was an atmospheric nuclear weapons test series held in the Marshall Islands at Enewetak and Bikini atolls in 1954. This is a report of DOD peronnel in CASTLE with an emphasis on operations and radiological safety.

Martin, E.J.; Rowland, R.H.

1982-04-01T23:59:59.000Z

117

Beta decay of Ga-62  

E-Print Network [OSTI]

from the ex- perimental ft value for a 01?01 b decay between analog states with the relation @3# 0556-2813/2003/68~1!/015501~6!/$20.00 68 015501- of 62Ga . Hardy, V. E. Mayes, R. G. Neilson, M. Sanchez-Vega, and R. E. Tribble y, College Station...

Hyman, BC; Iacob, VE; Azhari, A.; Gagliardi, Carl A.; Hardy, John C.; Mayes, VE; Neilson, RG; Sanchez-Vega, M.; Tang, X.; Trache, L.; Tribble, Robert E.

2003-01-01T23:59:59.000Z

118

Constraining neutrinoless double beta decay  

E-Print Network [OSTI]

A class of discrete flavor-symmetry-based models predicts constrained neutrino mass matrix schemes that lead to specific neutrino mass sum-rules (MSR). We show how these theories may constrain the absolute scale of neutrino mass, leading in most of the cases to a lower bound on the neutrinoless double beta decay effective amplitude.

L. Dorame; D. Meloni; S. Morisi; E. Peinado; J. W. F. Valle

2011-11-23T23:59:59.000Z

119

NEUTRINOLESS DOUBLE BETA DECAY AND ITS “INVERSE”  

E-Print Network [OSTI]

subsequently published arguments, non-observation of neutrinoless double beta decay has, to date, no bearing on

Clemens A. Heusch; Peter Minkowski

1996-01-01T23:59:59.000Z

120

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do

Patrick J. O’donnell; Utpal Sarkar

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Light-Quark Decays in Heavy Hadrons  

E-Print Network [OSTI]

We consider weak decays of heavy hadrons (bottom and charmed) where the heavy quark acts as a spectator. Theses decays are heavily phase-space suppressed but may become experimentally accessible in the near future. These decays are interesting as a QCD laboratory to study the behaviour of the light quarks in the colour-background field of the heavy spectator.

Faller, Sven

2015-01-01T23:59:59.000Z

122

Double beta decay: experiments and theory review  

E-Print Network [OSTI]

Neutrinoless double beta decay is one of the most powerful tools to set the neutrino mass absolute scale and establish whether the neutrino is a Majorana particle. After a summary of the neutrinoless double beta decay phenomenology, the present status of the experimental search for this rare decay is reported and the prospects for next generation experiments are reviewed.

A. Nucciotti

2007-07-28T23:59:59.000Z

123

Imperfect World of $??$-decay Nuclear Data Sets  

E-Print Network [OSTI]

The precision of double-beta ($\\beta\\beta$) decay experimental half lives and their uncertainties is reanalyzed. The method of Benford's distributions has been applied to nuclear reaction, structure and decay data sets. First-digit distribution trend for $\\beta\\beta$-decay T$_{1/2}^{2\

B. Pritychenko

2015-01-09T23:59:59.000Z

124

Imperfect World of $??$-decay Nuclear Data Sets?  

E-Print Network [OSTI]

The precision of double-beta ($\\beta\\beta$) decay experimental half-lives and their uncertainties is reevaluated. A complementary analysis of the decay uncertainties indicates deficiencies due to small size of statistical samples, and incomplete collection of experimental information. Further experimental and theoretical efforts would lead toward more precise values of $\\beta\\beta$-decay half-lives and nuclear matrix elements.

B. Pritychenko

2015-03-11T23:59:59.000Z

125

A First Look at Tree Decay An Introduction to How Injury and Decay Affect Trees  

E-Print Network [OSTI]

A First Look at Tree Decay An Introduction to How Injury and Decay Affect Trees by Kevin T. Smith Look at Tree Decay Photosynthesis and decay are the two most essential processes in nature. Photosynthesis by green plants captures and stores energy from the sun. This energy is used to form wood

126

Nobel Lecture Series Videos Now Available Online  

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

Lecture Series Videos Now Available Online Nobel Lecture Videos Now Available Online May 29, 2014 by Kathy Kincade (0 Comments) Three of the NERSC Nobel Lecture Series videos --...

127

Dalitz plot studies in hadronic charm decays  

E-Print Network [OSTI]

Recent studies of hadronic -meson decays are reported. Some experimental searches of CP-symmetry violation using model independent methods are presented. An importance of unitarity constraints in construction of phenomenological models of the D-meson decays is underlined. The theoretical model of the D0 --> K0S pi+ pi- decays, including some two-body unitarity constraints, is described. Then a comparison of the model results with the Belle collaboration data is made. The results on the CP-violation in the D0 --> K0S pi+ pi- decays are given and the necessity to consider the CP-violation in the subsequent K0S decays is emphasized.

Leonard Lesniak

2014-11-06T23:59:59.000Z

128

SERI advanced wind turbine blades  

SciTech Connect (OSTI)

The primary goal of the Solar Energy Research Institute`s (SERI) advanced wind turbine blades is to convert the kinetic energy in the wind into mechanical energy in an inexpensive and efficient manner. To accomplish this goal, advanced wind turbine blades have been developed by SERI that utilize unique airfoil technology. Performance characteristics of the advanced blades were verified through atmospheric testing on fixed-pitch, stall-regulated horizontal-axis wind turbines (HAWTs). Of the various wind turbine configurations, the stall-regulated HAWT dominates the market because of its simplicity and low cost. Results of the atmospheric tests show that the SERI advanced blades produce 10% to 30% more energy than conventional blades. 6 refs.

Tangler, J.; Smith, B.; Jager, D.

1992-02-01T23:59:59.000Z

129

SERI advanced wind turbine blades  

SciTech Connect (OSTI)

The primary goal of the Solar Energy Research Institute's (SERI) advanced wind turbine blades is to convert the kinetic energy in the wind into mechanical energy in an inexpensive and efficient manner. To accomplish this goal, advanced wind turbine blades have been developed by SERI that utilize unique airfoil technology. Performance characteristics of the advanced blades were verified through atmospheric testing on fixed-pitch, stall-regulated horizontal-axis wind turbines (HAWTs). Of the various wind turbine configurations, the stall-regulated HAWT dominates the market because of its simplicity and low cost. Results of the atmospheric tests show that the SERI advanced blades produce 10% to 30% more energy than conventional blades. 6 refs.

Tangler, J.; Smith, B.; Jager, D.

1992-02-01T23:59:59.000Z

130

Power spectra of fossil biodiversity time series: a connection with Galactic dynamics?  

E-Print Network [OSTI]

Systematic error is a major issue in the quantitative analysis of fossil biodiversity data in paleontology. I present results of time series analysis of a new and expanded data set (the Paleobiology Database) controlled and corrected for systematic error, and find that periodicities at approximately 62 and 150 Myr reported from previous data emerge at higher significance than before. This provides increased confidence that the periodicities are not collection, sampling, or binning artifacts. Both of these timescales are interestingly close to dynamical timescales of Solar motion in the Milky Way galaxy.

Melott, Adrian L

2008-01-01T23:59:59.000Z

131

International decay data evaluation project  

SciTech Connect (OSTI)

Basic concepts of, and information from, radionuclide decay are used in many applications. The author limits this discussion to the data needed for applied {gamma}-ray spectrometry; this includes applications such as nuclide identification and quantitative assay. Many of these applications require a knowledge of half-lives and radiation energies and emission probabilities. For over 50 years, people have compiled and evaluated measured data with the goal of obtaining the best values of these quantities. This has resulted in numerous sets of recommended values, many of which still have scientific, historical, or national reasons for existing. These sets show varying degrees of agreement and disagreement in the quoted values and varying time lags in incorporating new and improved experimental results. A new informational international group has been formed to carry out evaluations for radionuclides of importance in applications; it is expected that the results will become an authoritative and widely accepted set of decay data.

Helmer, R.G.

1996-10-01T23:59:59.000Z

132

Autoresonant soliton and decay pumping  

E-Print Network [OSTI]

The primary resonance equation in partial derivatives with external force and slowly varying frequency is derived. The leading-order term of asymptotic solution is constructed as a soliton with growing amplitude when time is large. This growing solution is obtained due to the decaying amplitude of the external force. A necessary condition for the growth of the solution in dissipative media is obtained also.

O. M. Kiselev

2013-01-29T23:59:59.000Z

133

Speeding-up Thorium decay  

E-Print Network [OSTI]

We show that cavitation of a solution of thorium-228 in water induces its transformation at a rate 10000 times faster than the natural radioactive decay would do. This result agrees with the alteration of the secular equilibrium of thorium-234 obtained by a Russian team via explosion of titanium foils in water and solutions. These evidences further support some preliminary clues for the possibility of piezonuclear reactions (namely nuclear reactions induced by pressure waves) obtained in the last ten years.

F. Cardone; R. Mignani; A. Petrucci

2007-10-26T23:59:59.000Z

134

Frontiers in Science Lecture Series  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor's note:Computing | Argonne LeadershipLecture Series

135

Systematic Approach for Decommissioning Planning and Estimating  

SciTech Connect (OSTI)

Nuclear facility decommissioning, satisfactorily completed at the lowest cost, relies on a systematic approach to the planning, estimating, and documenting the work. High quality information is needed to properly perform the planning and estimating. A systematic approach to collecting and maintaining the needed information is recommended using a knowledgebase system for information management. A systematic approach is also recommended to develop the decommissioning plan, cost estimate and schedule. A probabilistic project cost and schedule risk analysis is included as part of the planning process. The entire effort is performed by a experienced team of decommissioning planners, cost estimators, schedulers, and facility knowledgeable owner representatives. The plant data, work plans, cost and schedule are entered into a knowledgebase. This systematic approach has been used successfully for decommissioning planning and cost estimating for a commercial nuclear power plant. Elements of this approach have been used for numerous cost estimates and estimate reviews. The plan and estimate in the knowledgebase should be a living document, updated periodically, to support decommissioning fund provisioning, with the plan ready for use when the need arises.

Dam, A. S.

2002-02-26T23:59:59.000Z

136

Benchmarking Database Systems A Systematic Approach  

E-Print Network [OSTI]

Benchmarking Database Systems A Systematic Approach Dina Bitton David J. DeWitt Carolyn Turbyfill-81ER10920. #12;ABSTRACT This paper describes a customized database and a comprehensive set of queries that can be used for sys- tematic benchmarking of relational database systems. Designing this database

Liblit, Ben

137

Beta processes in a high-temperature field and nuclear multibeta decays  

SciTech Connect (OSTI)

Sources of the temperature dependence of rates of nuclear beta processes in matter of massive stars are systematized. Electron and positron beta decays and electron capture (K capture and the capture of unbound electrons) fromexcited nuclear states (thermal decays) are considered along with the photobeta decays from ground and excited nuclear states. The possible quantum degeneracy of an electron gas in matter and the degree of ionization of an atomic K shell in a high-temperature field are taken into account. For a number of multidecay odd-nuclei, the temperature dependences of the ratios of the total rates of their {beta}{sup -} decays to the sum of the total rates over all of decay modes for the same nuclei are calculated in the range of nuclear temperature from 2 to 3 Multiplication-Sign 10{sup 9} K. It is shown that the deviation of this ratio from the experimental value obtained at 'normal' temperature may be quite sizable. This circumstance should be taken into account in models that consider the problem of synthesis of nuclei in matter of massive stars.

Kopytin, I. V., E-mail: kopytin@yandex.ru; Hussain, Imad A. [Voronezh State University (Russian Federation)] [Voronezh State University (Russian Federation)

2013-11-15T23:59:59.000Z

138

Geochemistry and U-Series Geochronology of Hydrothermal and Hydroqenous Metal-Rich Deposits From the Pacific Ocean  

E-Print Network [OSTI]

Region of the Gorda Ridge Introduction The assignment of absolute ages to geologic materials is of paramount importance in the study of geology and geologic processes. Radiometric dating techniques exploiting disequilibria in the uranium and thoriurn-series decay chains have been used to deterrnine the age

Luther, Douglas S.

139

ACCESSCCESS MARINE ECOLOGY PROGRESS SERIES  

E-Print Network [OSTI]

OPENPEN ACCESSCCESS MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser Vol. 458: 39­52, 2012 doi: 10 and the instability or unpre- dictability of disturbance. Global warming is expec- ted to increase the vulnerability. 2010, Gruber 2011). Much of the available information about the impact on benthic systems comes

Zuschin, Martin

140

2014-2015Series Engineering  

E-Print Network [OSTI]

2014-2015Series College of Engineering University of Kentucky is accredited by the Southern of Kentucky. The curriculum in biosystems engineering is administered jointly by the College of Engineering and the College of Agriculture. Graduates earn the Bachelor of Science in Biosystems Engineering degree

MacAdam, Keith

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

2013-2014Series Engineering  

E-Print Network [OSTI]

.................................................................................... 4 EE 101 Creativity and Design in Electrical and Computer Engineering or CS 100 The Computer Science2013-2014Series College of Engineering University of Kentucky is accredited by the Southern of Kentucky. ComputerEngineering Computer engineering involves modeling, design, implementation, testing

Hayes, Jane E.

142

2012-2013 Series Engineering  

E-Print Network [OSTI]

.................................................................................... 4 EE 101 Creativity and Design in Electrical and Computer Engineering or CS 100 The Computer Science2012-2013 Series College of Engineering University of Kentucky is accredited by the Southern of Kentucky. ComputerEngineering Computer engineering involves modeling, design, implementation, testing

Hayes, Jane E.

143

2014-2015Series Engineering  

E-Print Network [OSTI]

................................................................................................... 4 EE 101 Creativity and Design in Electrical and Computer Engineering (fulfills the UK Core Arts2014-2015Series College of Engineering University of Kentucky is accredited by the Southern of Kentucky. ComputerEngineering Computer engineering involves modeling, design, implementation, testing

MacAdam, Keith

144

2014-2015Series Engineering  

E-Print Network [OSTI]

of the College of Engineering. Freshman Year First Semester Hours EE 101 Creativity and Design in Electrical2014-2015Series College of Engineering University of Kentucky is accredited by the Southern of Kentucky. Electrical Engineering The undergraduate electrical engineering degree program seeks to produce

MacAdam, Keith

145

2012-2013 Series Engineering  

E-Print Network [OSTI]

.................................................................................... 4 EE 101 Creativity and Design in Electrical and Computer Engineering or CS 100 The Computer Science2012-2013 Series College of Engineering University of Kentucky is accredited by the Southern://www.sacscoc.org for questions about the accreditation of University of Kentucky. ComputerEngineering Computer engineering

Dietz, Henry G. "Hank"

146

Small Flock Poultry Management Series  

E-Print Network [OSTI]

to care for your chicks in advance of them arriving at your home. Newly hatched chicks can not control (water splashed on the hot bulb will shatter it); Where possible use a `Hard Glass' bulb Family, HomeSmall Flock Poultry Management Series Brooding Chicks Starting your chicks Raising a flock

New Hampshire, University of

147

Mechanical Engineering Department Seminar Series  

E-Print Network [OSTI]

Mechanical Engineering Department Seminar Series Rational Mechanics of Viral Shells: Is Continuum Theory a Stretch? William S. Klug Associate Professor, Mechanical & Aerospace Engineering, University-assembly. The capacity of these shells to respond structurally and mechanically to physical and chemical stimuli also

Eustice, Ryan

148

Mechanical Engineering Department Seminar Series  

E-Print Network [OSTI]

­Madison as an Honorary Fellow in 2012 after retiring from General Motors Research & DevelopmentMechanical Engineering Department Seminar Series Ignition and Flame Growth in Spray-Guided Stratified-Charge Gasoline Engines Dr. Todd Fansler Engine Research Center University of Wisconsin - Madison

Papalambros, Panos

149

Atomic nuclei decay modes by spontaneous emission of heavy ions  

SciTech Connect (OSTI)

The great majority of the known nuclides with Z>40, including the so-called stable nuclides, are metastable with respect to several modes of spontaneous superasymmetric splitting. A model extended from the fission theory of alpha decay allows one to estimate the lifetimes and the branching ratios relative to the alpha decay for these natural radioactivities. From a huge amount of systematic calculations it is concluded that the process should proceed with maximum intensity in the trans-lead nuclei, where the minimum lifetime is obtained from parent-emitted heavy ion combinations leading to a magic (/sup 208/Pb) or almost magic daughter nucleus. More than 140 nuclides with atomic number smaller than 25 are possible candidates to be emitted from heavy nuclei, with half-lives in the range of 10/sup 10/--10/sup 30/ s: /sup 5/He, /sup 8en-dash10/Be, /sup 11,12/B, /sup 12en-dash16/C, /sup 13en-dash17/N, /sup 15en-dash22/O, /sup 18en-dash23/F, /sup 20en-dash26/Ne, /sup 23en-dash28/Na, /sup 23en-dash30/Mg, /sup 27en-dash32/Al, /sup 28en-dash36/Si, /sup 31en-dash39/P, /sup 32en-dash42/S, /sup 35en-dash45/Cl, /sup 37en-dash47/Ar, /sup 40en-dash49/ K, . .Ca, /sup 44en-dash53/ Sc, /sup 46en-dash53/Ti, /sup 48en-dash54/V, and /sup 49en-dash55/ Cr. The shell structure and the pairing effects are clearly manifested in these new decay modes.

Poenaru, D.N.; Ivascu, M.; Sndulescu, A.; Greiner, W.

1985-08-01T23:59:59.000Z

150

Neutrino mass spectrum and neutrinoless double beta decay  

E-Print Network [OSTI]

The relations between the effective Majorana mass of the electron neutrino, $m_{ee}$, responsible for neutrinoless double beta decay, and the neutrino oscillation parameters are considered. We show that for any specific oscillation pattern $m_{ee}$ can take any value (from zero to the existing upper bound) for normal mass hierarchy and it can have a minimum for inverse hierarchy. This means that oscillation experiments cannot fix in general $m_{ee}$. Mass ranges for $m_{ee}$ can be predicted in terms of oscillation parameters with additional assumptions about the level of degeneracy and the type of hierarchy of the neutrino mass spectrum. These predictions for $m_{ee}$ are systematically studied in the specific schemes of neutrino mass and flavor which explain the solar and atmospheric neutrino data. The contributions from individual mass eigenstates in terms of oscillation parameters have been quantified. We study the dependence of $m_{ee}$ on the non-oscillation parameters: the overall scale of the neutrino mass and the relative mass phases. We analyze how forthcoming oscillation experiments will improve the predictions for $m_{ee}$. On the basis of these studies we evaluate the discovery potential of future \\znbb decay searches. The role \\znbb decay searches will play in the reconstruction of the neutrino mass spectrum is clarified. The key scales of $m_{ee}$, which will lead to the discrimination among various schemes are: $m_{ee} \\sim 0.1$ eV and $m_{ee} \\sim 0.005$ eV.

H. V. Klapdor-Kleingrothaus; H. Päs; A. Y. Smirnov

2000-10-08T23:59:59.000Z

151

Multichannel Quantum Defect Theory of Strontium Rydberg Series  

E-Print Network [OSTI]

Using the reactance matrix approach, we systematically develop new multichannel quantum defect theory models for the singlet and triplet S, P, D and F states of strontium based on improved energy level measurements. The new models reveal additional insights into the character of doubly excited perturber states, and the improved energy level measurements for certain series allow fine structure to be resolved for those series' perturbers. Comparison between the predictions of the new models and those of previous empirical and \\emph{ab initio} studies reveals good agreement with most series, however some discrepancies are highlighted. Using the multichannel quantum defect theory wave functions derived from our models we calculate other observables such as Land\\'e $g_J$-factors and radiative lifetimes. The analysis reveals the impact of perturbers on the Rydberg state properties of divalent atoms, highlighting the importance of including two-electron effects in the calculations of these properties. The work enables future investigations of properties such as Stark maps and long-range interactions of Rydberg states of strontium.

C L Vaillant; M P A Jones; R M Potvliege

2014-02-24T23:59:59.000Z

152

Systematic ranging and late warning asteroid impacts  

E-Print Network [OSTI]

We describe systematic ranging, an orbit determination technique especially suitable to assess the near-term Earth impact hazard posed by newly discovered asteroids. For these late warning cases, the time interval covered by the observations is generally short, perhaps a few hours or even less, which leads to severe degeneracies in the orbit estimation process. The systematic ranging approach gets around these degeneracies by performing a raster scan in the poorly-constrained space of topocentric range and range rate, while the plane of sky position and motion are directly tied to the recorded observations. This scan allows us to identify regions corresponding to collision solutions, as well as potential impact times and locations. From the probability distribution of the observation errors, we obtain a probability distribution in the orbital space and then estimate the probability of an Earth impact. We show how this technique is effective for a number of examples, including 2008 TC3 and 2014 AA, the only tw...

Farnocchia, D; Micheli, M

2015-01-01T23:59:59.000Z

153

Neutrinoless double beta decay experiments  

E-Print Network [OSTI]

The study of neutrinoless double beta decay is of outmost importance for neutrino physics. It is considered to be the gold plated channel to probe the fundamental character of neutrinos and to determine the neutrino mass. From the experimental point about nine different isotopes are explored for the search. After a general introduction follows a short discussion on nuclear matrix element calculations and supportive measurements. The current experimental status of double beta searches is presented followed by a short discussion of the ideas and proposals for large scale experiments.

K. Zuber

2006-10-04T23:59:59.000Z

154

Systematically Accelerated Convergence of Path Integrals  

SciTech Connect (OSTI)

We present a new analytical method that systematically improves the convergence of path integrals of a generic N-fold discretized theory. Using it we calculate the effective actions S{sup (p)} for p{<=}9, which lead to the same continuum amplitudes as the starting action, but that converge to that continuum limit as 1/N{sup p}. We checked this derived speedup in convergence by performing Monte Carlo simulations on several different models.

Bogojevic, A.; Balaz, A.; Belic, A. [Institute of Physics, P.O. Box 57, 11001 Belgrade (Serbia and Montenegro)

2005-05-13T23:59:59.000Z

155

Molecular electrostatic potentials by systematic molecular fragmentation  

SciTech Connect (OSTI)

A simple method is presented for estimating the molecular electrostatic potential in and around molecules using systematic molecular fragmentation. This approach estimates the potential directly from the electron density. The accuracy of the method is established for a set of organic molecules and ions. The utility of the approach is demonstrated by estimating the binding energy of a water molecule in an internal cavity in the protein ubiquitin.

Reid, David M.; Collins, Michael A. [Research School of Chemistry, Australian National University, Canberra, ACT 0200 (Australia)] [Research School of Chemistry, Australian National University, Canberra, ACT 0200 (Australia)

2013-11-14T23:59:59.000Z

156

Systematic Errors in measurement of b1  

SciTech Connect (OSTI)

A class of spin observables can be obtained from the relative difference of or asymmetry between cross sections of different spin states of beam or target particles. Such observables have the advantage that the normalization factors needed to calculate absolute cross sections from yields often divide out or cancel to a large degree in constructing asymmetries. However, normalization factors can change with time, giving different normalization factors for different target or beam spin states, leading to systematic errors in asymmetries in addition to those determined from statistics. Rapidly flipping spin orientation, such as what is routinely done with polarized beams, can significantly reduce the impact of these normalization fluctuations and drifts. Target spin orientations typically require minutes to hours to change, versus fractions of a second for beams, making systematic errors for observables based on target spin flips more difficult to control. Such systematic errors from normalization drifts are discussed in the context of the proposed measurement of the deuteron b(1) structure function at Jefferson Lab.

Wood, S A

2014-10-27T23:59:59.000Z

157

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

We study the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay when CP is not conserved. We give an explicit form of the decay rate in terms of a rephasing invariant quantity and demonstrate that in the presence of CP violation it is impossible to have vanishing neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do not mix with other leptons and hence decouple).

Patrick J. O'Donnell; Utpal Sarkar

1993-05-27T23:59:59.000Z

158

Dental Decay Among Texas School Children.  

E-Print Network [OSTI]

more often found ama older than the younger ones. With all children the numb( ing decayed 6-year molars increased rapidly with age up or 14 years. lightly more girls than boys in each race had decayed tee 'he data secured in this study suggest a... to Caries i vith Other Recent Studies I AcknowIedgm Summary Literature Ci ents -_---. ted -------- CTIN NO. 491 AUGUST, 1934 DENTAL DECAY AMONG TEXAS SCHOOL CHILDREN* sometix extensi Seve: aualifif agcum someti] diet (6 to curl...

Whitacre, Jessie (Jessie Opal)

1934-01-01T23:59:59.000Z

159

Summer Series 2012 - Shashi Buluswar  

SciTech Connect (OSTI)

The last installment of the "Summer Series of Conversations" took place Wednesday, August 1, with guest Shashi Buluswar, the executive director of the LBNL Institute for Globally Transformative Technologies (LIGTT). The Institute seeks to foster the discovery, development and deployment of a generation of low-carbon, affordable technologies that will advance sustainable methods to fight global poverty. The event, was hosted by Public Affairs Head Jeff Miller.

Shashi Buluswar

2012-08-08T23:59:59.000Z

160

Summer Series 2012 - Shashi Buluswar  

ScienceCinema (OSTI)

The last installment of the "Summer Series of Conversations" took place Wednesday, August 1, with guest Shashi Buluswar, the executive director of the LBNL Institute for Globally Transformative Technologies (LIGTT). The Institute seeks to foster the discovery, development and deployment of a generation of low-carbon, affordable technologies that will advance sustainable methods to fight global poverty. The event, was hosted by Public Affairs Head Jeff Miller.

Shashi Buluswar

2013-06-24T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Resumming the string perturbation series  

E-Print Network [OSTI]

We use the AdS/CFT correspondence to study the resummation of a perturbative genus expansion appearing in the type II superstring dual of ABJM theory. Although the series is Borel summable, its Borel resummation does not agree with the exact non-perturbative answer due to the presence of complex instantons. The same type of behavior appears in the WKB quantization of the quartic oscillator in Quantum Mechanics, which we analyze in detail as a toy model for the string perturbation series. We conclude that, in these examples, Borel summability is not enough for extracting non-perturbative information, due to non-perturbative effects associated to complex instantons. We also analyze the resummation of the genus expansion for topological string theory on local $\\mathbb P^1 \\times \\mathbb P^1$, which is closely related to ABJM theory. In this case, the non-perturbative answer involves membrane instantons computed by the refined topological string, which are crucial to produce a well-defined result. We give evidence that the Borel resummation of the perturbative series requires such a non-perturbative sector.

Alba Grassi; Marcos Marino; Szabolcs Zakany

2015-02-10T23:59:59.000Z

162

The beta-decay of 22Al  

E-Print Network [OSTI]

In an experiment performed at the LISE3 facility of GANIL, we studied the decay of 22Al produced by the fragmentation of a 36Ar primary beam. A beta-decay half-life of 91.1 +- 0.5 ms was measured. The beta-delayed one- and two-proton emission as well as beta-alpha and beta-delayed gamma decays were measured and allowed us to establish a partial decay scheme for this nucleus. New levels were determined in the daughter nucleus 22Mg. The comparison with model calculations strongly favours a spin-parity of 4+ for the ground state of 22Al.

N. L. Achouri; F. de Oliveira Santos; M. Lewitowicz; B. Blank; J. Aysto; G. Canchel; S. Czajkowski; P. Dendooven; A. Emsallem; J. Giovinazzo; N. Guillet; A. Jokinen; A. M. Laird; C. Longour; K. Perajarvi; N. Smirnova; M. Stanoiu; J. C. Thomas

2006-08-01T23:59:59.000Z

163

Review of double beta decay experiments  

E-Print Network [OSTI]

The brief review of current experiments on search and studying of double beta decay processes is done. Best present limits on $\\langle m_{\

A. S. Barabash

2014-03-12T23:59:59.000Z

164

Nuclear beta-decay measurements and |Vud|  

E-Print Network [OSTI]

Some recent work in nuclear beta decay related to the value of |Vud| is described along with some near-term goals for future measurements.

Dan Melconian

2011-08-11T23:59:59.000Z

165

Operator Analysis of Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We study the effective operators of the standard model fields which would yield an observable rate of neutrinoless double beta decay. We particularly focus on the possibility that neutrinoless double beta decay is dominantly induced by lepton-number-violating higher dimensional operators other than the Majorana neutrino mass. Our analysis can be applied to models in which neutrinoless double beta decay is induced either by a strong dynamics or by quantum gravity effects at a fundamental scale near the TeV scale as well as the conventional models in which neutrinoless double beta decay is induced by perturbative renormalizable interactions.

Kiwoon Choi; Kwang Sik Jeong; Wan Young Song

2002-07-19T23:59:59.000Z

166

Spectroscopy of element 115 decay chains  

SciTech Connect (OSTI)

A high-resolution a, X-ray and -ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum fu r Schwerionenforschung. Thirty correlated a-decay chains were detected following the fusion-evaporation reaction 48Ca + 243Am. The observations are consistent with previous assignments of similar decay chains to originate from element Z = 115. The data includes first candidates of fingerprinting the decay step Mt --> Bh with characteristic X rays. For the first time, precise spectroscopy allows the derivation of excitation schemes of isotopes along the decay chains starting with elements Z > 112. Comprehensive Monte-Carlo simulations accompany the data analysis. Nuclear structure models provide a first level interpretation.

Rudolph, Dirk [Lund University, Sweden; Forsberg, U. [Lund University, Sweden; Golubev, P. [Lund University, Sweden; Sarmiento, L. G. [Lund University, Sweden; Yakushev, A. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Andersson, L.-L. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Di Nitto, A. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Duehllmann, Ch. E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Gates, J. M. [Lawrence Berkeley National Laboratory (LBNL); Gregorich, K. E. [Lawrence Berkeley National Laboratory (LBNL); Gross, Carl J [ORNL; Hessberger, F. P. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Herzberg, R.-D [University of Liverpool; Khuyagbaatar, J. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Kratz, J. V. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Rykaczewski, Krzysztof Piotr [ORNL; Schaedel, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Aberg, S. [Lund University, Sweden; Ackermann, D. [GSI-Hemholtzzentrum fur Schwerionenforschung, Darmstadt, Germany; Block, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Brand, H. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Carlsson, B. G. [Lund University, Sweden; Cox, D. [University of Liverpool; Derkx, X. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Eberhardt, K. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Even, J. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Fahlander, C. [Lund University, Sweden; Gerl, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Jaeger, E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kindler, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Krier, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kojouharov, I. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kurz, N. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Lommel, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Mistry, A. [University of Liverpool; Mokry, C. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Nitsche, H. [Lawrence Berkeley National Laboratory (LBNL); Omtvedt, J. P. [Paul Scherrer Institut, Villigen, Switzerland; Papadakis, P. [University of Liverpool; Ragnarsson, I. [Lund University, Sweden; Runke, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Schaffner, H. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Schausten, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Thoerle-Pospiech, P. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Torres, T. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Traut, T. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Trautmann, N. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Tuerler, A. [Paul Scherrer Institut, Villigen, Switzerland; Ward, A. [University of Liverpool; Ward, D. E. [Lund University, Sweden; Wiehl, N. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany

2013-01-01T23:59:59.000Z

167

Neutrinoless Double Beta Decay and Neutrino Masses  

E-Print Network [OSTI]

Neutrinoless double beta decay is a promising test for lepton number violating physics beyond the standard model of particle physics. There is a deep connection between this decay and the phenomenon of neutrino masses. In particular, we will discuss the relation between neutrinoless double beta decay and Majorana neutrino masses provided by the so-called Schechter--Valle theorem in a quantitative way. Furthermore, we will present an experimental cross check to discriminate neutrinoless double beta decay from unknown nuclear background using only one isotope, i.e., within one experiment.

Michael Duerr

2012-06-04T23:59:59.000Z

168

Neutrinoless Double Beta Decay: Present and Future  

E-Print Network [OSTI]

Present status, and future plans for Double Beta Decay searches are reviewed. Given the recent observations of neutrino oscillations, a possibility to observe $\\beta\\beta(0\

Oliviero Cremonesi

2002-10-04T23:59:59.000Z

169

Review of double beta decay experiments  

E-Print Network [OSTI]

The brief review of current experiments on search and studying of double beta decay processes is done. Best present limits on $\\langle m_{\

Barabash, A S

2014-01-01T23:59:59.000Z

170

Displacement Echoes: Classical Decay and Quantum Freeze  

E-Print Network [OSTI]

Motivated by neutron scattering experiments, we investigate the decay of the fidelity with which a wave packet is reconstructed by a perfect time-reversal operation performed after a phase space displacement. In the semiclassical limit, we show that the decay rate is generically given by the Lyapunov exponent of the classical dynamics. For small displacements, we additionally show that, following a short-time Lyapunov decay, the decay freezes well above the ergodic value because of quantum effects. Our analytical results are corroborated by numerical simulations.

Cyril Petitjean; Diego V. Bevilaqua; Eric J. Heller; Philippe Jacquod

2007-04-23T23:59:59.000Z

171

Phenomenology of charmless hadronic B decays  

E-Print Network [OSTI]

The decays of $B$ mesons to a pair of charmless pseudoscalar mesons ($PP$ decays) or to a vector and pseudoscalar meson ($VP$ decays) have been analyzed within the framework of flavor SU(3) symmetry and the Kobayashi-Maskawa mechanism of CP violation. Separate $PP$ and $VP$ fits proved to be successful in describing the experimental data (branching ratios, CP asymmetries and time-dependent parameters). Decay magnitudes and relative weak and strong phases have been extracted from the fits. Values of the weak phase $\\gamma$ were found to be consistent with the current indirect bounds from other analyses of CKM parameters.

Suprun, D A

2005-01-01T23:59:59.000Z

172

Phenomenology of charmless hadronic B decays  

E-Print Network [OSTI]

The decays of $B$ mesons to a pair of charmless pseudoscalar mesons ($PP$ decays) or to a vector and pseudoscalar meson ($VP$ decays) have been analyzed within the framework of flavor SU(3) symmetry and the Kobayashi-Maskawa mechanism of CP violation. Separate $PP$ and $VP$ fits proved to be successful in describing the experimental data (branching ratios, CP asymmetries and time-dependent parameters). Decay magnitudes and relative weak and strong phases have been extracted from the fits. Values of the weak phase $\\gamma$ were found to be consistent with the current indirect bounds from other analyses of CKM parameters.

Denis A. Suprun

2004-10-22T23:59:59.000Z

173

The Decay of the Neutron or Beta Decay, the Big Bang, and the...  

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

Decay of the Neutron or Beta Decay, the Big Bang, and the Left-Handed Universe Apr 03 2014 01:00 PM - 02:30 PM Geoffrey L. Greene Physics Division, ORNL Research Accelerator...

174

TDS3000C Series Digital Phosphor Oscilloscopes  

E-Print Network [OSTI]

xx TDS3000C Series Digital Phosphor Oscilloscopes ZZZ User Manual *P071230802* 071-2308-02 #12;#12;TDS3000C Series Digital Phosphor Oscilloscopes ZZZ User Manual xx www.tektronix.com 071-2308-02 #12

Kleinfeld, David

175

CrossConnects Workshop Series  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User GroupInformationE-GovNaturalInstitute CriticalCross

176

Spectroscopy and decays of charm and bottom  

SciTech Connect (OSTI)

After a brief review of the quark model, we discuss our present knowledge of the spectroscopy of charm and bottom mesons and baryons. We go on to review the lifetimes, semileptonic, and purely leptonic decays of these particles. We conclude with a brief discussion B and D mixing and rare decays.

Butler, J.N.

1997-10-01T23:59:59.000Z

177

Neutrino oscillations and neutrinoless double beta decay  

E-Print Network [OSTI]

The relation between neutrino oscillation parameters and neutrinoless double beta decay is studied, assuming normal and inverse hierarchies for Majorana neutrino masses. For normal hierarchy the crucial dependence on U_{e3} is explored. The link with tritium beta decay is also briefly discussed.

D. Falcone; F. Tramontano

2001-03-16T23:59:59.000Z

178

Neutrinoless double beta decay and neutrino physics  

E-Print Network [OSTI]

The connection of neutrino physics with neutrinoless double beta decay is reviewed. After presenting the current status of the PMNS matrix and the theoretical background of neutrino mass and lepton mixing, we will summarize the various implications of neutrino physics for double beta decay. The influence of light sterile neutrinos and other exotic modifications of the three neutrino picture is also discussed.

Werner Rodejohann

2012-08-20T23:59:59.000Z

179

Measurement of the Time-dependent CP Asymmetry inB to D(*)_CP h0 Decays  

SciTech Connect (OSTI)

The authors report a measurement of the time-dependent CP-asymmetry parameters S and C in color-suppressed B{sup 0} {yields} D{sup (*)0}h{sup 0} decays, where h{sup 0} is a {pi}{sup 0}, {eta}, or {omega} meson, and the D{sup 0} decays to one of the CP eigenstates K{sup +}K{sup -}, K{sub S}{sup 0}{pi}{sup 0}, or K{sub S}{sup 0}{omega}. The data sample consists of 383 x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B-factory at SLAC. The results are S = -0.56 {+-} 0.23 {+-} 0.05 and C = -0.23 {+-} 0.16 {+-} 0.04, where the first error is statistical and the second is systematic.

Aubert, B.

2007-03-14T23:59:59.000Z

180

Sensitivity of Next-Generation Tritium Beta-Decay Experiments for keV-Scale Sterile Neutrinos  

E-Print Network [OSTI]

We investigate the sensitivity of tritium $\\beta$-decay experiments for keV-scale sterile neutrinos. Relic sterile neutrinos in the keV mass range can contribute both to the cold and warm dark matter content of the universe. This work shows that a large-scale tritium beta-decay experiment, similar to the KATRIN experiment that is under construction, can reach a statistical sensitivity of the active-sterile neutrino mixing of $\\sin^2\\theta \\sim 10^{-8}$. The effect of uncertainties in the known theoretical corrections to the tritium $\\beta$-decay spectrum were investigated, and found not to affect the sensitivity significantly. It is demonstrated that controlling uncorrelated systematic effects will be one of the main challenges in such an experiment.

S. Mertens; T. Lasserre; S. Groh; F. Glueck; A. Huber; A. W. P. Poon; M. Steidl; N. Steinbrink; C. Weinheimer

2014-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Wavelet Approach to Search for Sterile Neutrinos in Tritium $?$-Decay Spectra  

E-Print Network [OSTI]

Sterile neutrinos in the mass range of a few keV are candidates for both cold and warm dark matter. An ad-mixture of a heavy neutrino mass eigenstate to the electron neutrino would result in a minuscule distortion - a 'kink' - in a $\\beta$-decay spectrum. In this paper we show that a wavelet transform is a very powerful shape analysis method to detect this signature. For a tritium source strength, similar to what is expected from the KATRIN experiment, a statistical sensitivity to active-to-sterile neutrino mixing down to $\\sin^2 \\theta= 10^{-6}$ ($90\\%$ CL) can be obtained after 3 years of measurement time. It is demonstrated that the wavelet approach is largely insensitive to systematic effects that result in smooth spectral modifications. To make full use of this analysis technique a high resolution measurement (FWHM of $\\sim100$~eV) of the tritium $\\beta$-decay spectrum is required.

S. Mertens; K. Dolde; M. Korzeczek; F. Glueck; S. Groh; R. D. Martin; A. W. P. Poon; M. Steidl

2015-01-08T23:59:59.000Z

182

Observation of B0 Meson Decay to a1(1260)+- pi-+  

E-Print Network [OSTI]

We present a measurement of the branching fraction of the decay B0 --> a1(1260)^{+-} pi^{-+} with a1(1260)^{+-} --> pi^{-+} pi^{+-} pi^{+-}. The data sample consists of 218 million B B-bar pairs collected at the Y(4S) resonance and recorded by the BaBar detectorat the PEP-II asymmetric-energy e+e- collider at SLAC. The analysis is based on unbinned multivariate maximum likelihood fit. The measured branching fraction is: (16.6 +/- 1.9 +/- 1.5) 10^{-6}. The decay mode, observed for the first time, is seen with a significance of 9.2 sigma (systematic uncertainties included).

Aubert, B; Bóna, M; Boutigny, D; Couderc, F; Karyotakis, Yu; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A; Graugčs-Pous, E; Palano, A; Pappagallo, M; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S; Eigen, G; Ofte, I; Stugu, B; Abrams, G S; Battaglia, M; Brown, D N; Button-Shafer, J; Cahn, R N; Charles, E; Day, C T; Gill, M S; Groysman, Y; Jacobsen, R G; Kadyk, J A; Kerth, L T; Kolomensky, Yu G; Kukartsev, G; Lynch, G; Mir, L M; Oddone, P J; Orimoto, T J; Pripstein, M; Roe, N A; Ronan, M T; Wenzel, W A; Barrett, M; Ford, K E; Harrison, T J; Hart, A J; Hawkes, C M; Morgan, S E; Watson, A T; Goetzen, K; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Peters, K; Schröder, T; Steinke, M; Boyd, J T; Burke, J P; Cottingham, W N; Walker, D; Çuhadar-Dönszelmann, T; Fulsom, B G; Hearty, C; Knecht, N S; Mattison, T S; McKenna, J A; Khan, A; Kyberd, P; Saleem, M; Teodorescu, L; Blinov, V E; Bukin, A D; Druzhinin, V P; Golubev, V B; Onuchin, A P; Serednyakov, S I; Skovpen, Yu I; Solodov, E P; Todyshev, Yu K; Best, D S; Bondioli, M; Bruinsma, M; Chao, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, A J; Lund, P; Mandelkern, M A; Mommsen, R K; Röthel, W; Stoker, D P; Abachi, S; Buchanan, C; Foulkes, S D; Gary, J W; Long, O; Shen, B C; Wang, K; Zhang, L; Hadavand, H K; Hill, E J; Paar, H P; Rahatlou, S; Sharma, V; Berryhill, J W; Campagnari, C; Cunha, A; Dahmes, B; Hong, T M; Kovalskyi, D; Richman, J D; Beck, T W; Eisner, A M; Flacco, C J; Heusch, C A; Kroseberg, J; Lockman, W S; Nesom, G; Schalk, T; Schumm, B A; Seiden, A; Spradlin, P; Williams, D C; Wilson, M G; Albert, J; Chen, E; Dvoretskii, A; Hitlin, D G; Narsky, I; Piatenko, T; Porter, F C; Ryd, A; Samuel, A; Andreassen, R; Mancinelli, G; Meadows, B T; Sokoloff, M D; Blanc, F; Bloom, P C; Chen, S; Ford, W T; Hirschauer, J F; Kreisel, A; Nauenberg, U; Olivas, A; Ruddick, W O; Smith, J G; Ulmer, K A; Wagner, S R; Zhang, J; Chen, A; Eckhart, E A; Soffer, A; Toki, W H; Wilson, R J; Winklmeier, F; Zeng, Q; Altenburg, D D; Feltresi, E; Hauke, A; Jasper, H; Spaan, B; Brandt, T; Klose, V; Lacker, H M; Mader, W F; Nogowski, R; Petzold, A; Schubert, J; Schubert, K R; Schwierz, R; Sundermann, J E; Volk, A; Bernard, D; Bonneaud, G R; Grenier, P; Latour, E; Thiebaux, C; Verderi, M; Bard, D J; Clark, P J; Gradl, W; Muheim, F; Playfer, S; Robertson, A I; Xie, Y; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Luppi, E; Negrini, M; Petrella, A; Piemontese, L; Prencipe, E; Anulli, F; Baldini-Ferroli, R; Calcaterra, A; De Sangro, R; Finocchiaro, G; Pacetti, S; Patteri, P; Peruzzi, I M; Piccolo, M; Rama, M; Zallo, A; Buzzo, A; Capra, R; Contri, R; Lo Vetere, M; Macri, M M; Monge, M R; Passaggio, S; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Brandenburg, G; Chaisanguanthum, K S; Morii, M; Wu, J; Dubitzky, R S; Marks, J; Schenk, S; Uwer, U; Bhimji, W; Bowerman, D A; Dauncey, P D; Egede, U; Flack, R L; Gaillard, J R; Nash, J A; Nikolich, M B; Panduro-Vazquez, W; Chai, X; Charles, M J; Mallik, U; Meyer, N T; Ziegler, V; Cochran, J; Crawley, H B; Dong, L; Eyges, V; Meyer, W T; Prell, S; Rosenberg, E I; Rubin, A E; Gritsan, A V; Fritsch, M; Schott, G; Arnaud, N; Davier, M; Grosdidier, G; Höcker, A; Le Diberder, F R; Lepeltier, V; Lutz, A M; Oyanguren, A; Pruvot, S; Rodier, S; Roudeau, P; Schune, M H; Stocchi, A; Wang, W F; Wormser, G; Cheng, C H; Lange, D J; Wright, D M; Chavez, C A; Forster, I J; Fry, J R; Gabathuler, E; Gamet, R; George, K A; Hutchcroft, D E; Payne, D J; Schofield, K C; Touramanis, C; Bevan, A J; Di Lodovico, F; Menges, W; Sacco, R; Brown, C L; Cowan, G; Flächer, H U; Hopkins, D A; Jackson, P S; McMahon, T R; Ricciardi, S; Salvatore, F; Davis, C L; Allison, J; Barlow, N R; Barlow, R J; Chia, Y M; Edgar, C L; Kelly, M P; Lafferty, G D; Naisbit, M T; Williams, J C; Yi, J I; Chen, C; Hulsbergen, W D; Jawahery, A; Lae, C K; Roberts, D A; Simi, G; Blaylock, G; Dallapiccola, C; Hertzbach, S S; Li, X; Moore, T B; Saremi, S; Stängle, H; Willocq, S Y; Cowan, R; Koeneke, K; Sciolla, G; Sekula, S J; Spitznagel, M; Taylor, F; Yamamoto, R K; Kim, H; Patel, P M; Potter, C T; Robertson, S H; Lazzaro, A; Lombardo, V; Palombo, F; Bauer, J M; Cremaldi, L; Eschenburg, V; Godang, R; Kroeger, R; Reidy, J; Sanders, D A; Summers, D J; Zhao, H W; Brunet, S; Côté, D; Simard, M; Taras, P; Viaud, F B; Nicholson, H; Cavallo, N; De Nardo, Gallieno; Del Re, D; Fabozzi, F; Gatto, C; Lista, L; Monorchio, D; Piccolo, D; Sciacca, C; Baak, M; Bulten, H; Raven, G; Snoek, H L; Jessop, C P; LoSecco, J M; Allmendinger, T; Benelli, G; Gan, K K; Honscheid, K; Hufnagel, D; Jackson, P D; Kagan, H; Kass, R; Pulliam, T; Rahimi, A M; Ter-Antonian, R; Wong, Q K; Blount, N L; Brau, J E; Frey, R; Igonkina, O; Lu, M; Rahmat, R; Sinev, N B; Strom, D; Strube, J; Torrence, E; Galeazzi, F; Gaz, A; Margoni, M; Morandin, M; Pompili, A; Posocco, M; Rotondo, M; Simonetto, F

2006-01-01T23:59:59.000Z

183

TAUOLA for simulation of tau decay and production: perspectives for precision low energy and LHC applications  

E-Print Network [OSTI]

The status of Monte Carlo system for the simulation of tau-lepton production and decay in high-energy accelerator experiments is reviewed. Since previous tau-lepton conference in 2008 some practical modifications have been introduced: (i) For the TAUOLA Monte Carlo generator of tau-lepton decays, automated and simultaneous use of many versions of form-factors for the calculation of optional weights for fits was developped and checked to work in Belle and BaBar software environment. Work on alternative paramterizations of hadronic decays is advanced. (ii) the TAUOLA universal interface based on HepMC (the C++ event record) is now public. A similar interface for PHOTOS is now also public. (iii) Extension of PHOTOS Monte Carlo for QED bremsstrahlung in decays featuring kernels based on complete first order matrix element are gradually becoming widely available thanks to properites of the new, HepMC based interface. (iv) Tests of the programs systematized with the help of MC-TESTER are now available for FORTRAN and C++ users. Presented here results illustrate the status of the projects performed in collaboration with Nadia Davidson, Piotr Golonka, Gizo Nanava, Tomasz Przedzinski, Olga Shekhovtsova, El zbieta Richter-Was, Pablo Roig, Qingjun Xu and others.

Zbigniew Was

2011-01-09T23:59:59.000Z

184

Upper limit on the cross section for reactor antineutrinos changing 22Na decay rates  

E-Print Network [OSTI]

In this paper we present results of a long-term observation of the decay of 22Na in the presence of a nuclear fission reactor. The measurements were made outside the containment wall of and underneath the Koeberg nuclear power plant near Cape Town, South Africa. Antineutrino fluxes ranged from ~5*10^11 to 1.6*10^13 cm^-2 s^-1 during this period. We show that the coincidence summing technique provides a sensitive tool to measure a change in the total decay constant as well as the branching ratio between EC and beta+ decay of 22Na to the first excited state in 22Ne. We observe a relative change in count rate between reactor-ON and reactor-OFF equal to (-0.51+/-0.11)*10^-4. After evaluating possible systematic uncertainties we conclude that the effect is either due to a hidden instrumental cause or due to an interaction between antineutrinos and the 22Na nucleus. An upper limit of ~0.03 barn has been deduced for observing any change in the decay rate of 22Na due to antineutrino interactions.

R. J. de Meijer; S. W. Steyn

2014-09-23T23:59:59.000Z

185

Rapidly Convergent Series of the Divisors Functions  

E-Print Network [OSTI]

This note gives a few rapidly convergent series representations of the sums of divisors functions. These series have various applications such as exact evaluations of some power series, computing estimates and proving the existence results of some special values of the sums of divisors functions.

N. A. Carella

2014-07-28T23:59:59.000Z

186

ESSENCE Good practice document series to improving  

E-Print Network [OSTI]

ESSENCE Good practice document series 2012 Five keys to improving research costing in low ESSENCE Good practice document series Five keys to improving research costing in low- and middle- income countries 2012 ESSENCE Good practice document series Contents About ESSENCE and this 2 good practise

Rambaut, Andrew

187

Observation of the Rare Decay B^+ to K^+ \\pi^0 \\pi^0  

SciTech Connect (OSTI)

We report an analysis of charmless hadronic decays of charged B mesons to the final state K{sup +}{pi}{sup 0}{pi}{sup 0}, using a data sample of 470.9 {+-} 2.8 million B{bar B} events collected with the BABAR detector at the {Upsilon}(4S) resonance. We observe an excess of signal events with a significance above 10 standard deviations including systematic uncertainties and measure the branching fraction to be {Beta}(B{sup +}{yields}K{sup +}{pi}{sup 0}{pi}{sup 0}) = (15.5 {+-} 1.1 {+-} 1.6) x 10{sup -6}, where the uncertainties are statistical and systematic, respectively.

del Amo Sanchez, P.; Lees, J.P.; Poireau, V.; Prencipe, E.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Martinelli, M.; Palano, A.; Pappagallo, M.; /INFN, Bari /Bari U.; Eigen, G.; Stugu, B.; Sun, L.; /Bergen U.; Battaglia, M.; Brown, David Nathan; Hooberman, B.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; Osipenkov, I.L.; Tanabe, T.; /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /INFN, Ferrara /Frascati /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /Indian Inst. Tech., Guwahati /Harvard U. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U.; /more authors.; ,

2010-06-11T23:59:59.000Z

188

Business Exploration Series SkillSoft's latest content innovation, the Business Exploration Series, was designed to be visually rich and  

E-Print Network [OSTI]

Business Exploration Series SkillSoft's latest content innovation, the Business Exploration Series to our Business Skills Courseware Library. The Business Exploration Series provides learners two different learning assets: Business Impact Series Challenge Series Analyze frequently encountered

Maryland, Baltimore County, University of

189

In-flight decay spectroscopy of exotic light nuclei  

SciTech Connect (OSTI)

In-flight-decay spectroscopy is discussed, including its advantages and disadvantages. In particular the use of in-flight-decay spectroscopy for the study of two-proton decay along isobaric multiplets in highlighted.

Charity, R. J. [Department of Chemistry, Washington University, St. Louis, Mo 63130 (United States)

2012-11-20T23:59:59.000Z

190

Neutrinoless Double Beta Decay in Light of SNO Salt Data  

E-Print Network [OSTI]

Limits From Neutrinoless Double-Beta Decay (Rev. ),” incan also cause neutrinoless double-beta decay (see e.g. , [LBNL-53996 Neutrinoless Double Beta Decay in Light of SNO

Murayama, Hitoshi

2009-01-01T23:59:59.000Z

191

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

312 P. Vogel, “Limits From Neutrinoless Double-Beta Decay (Assumptions No detected neutrinoless double ?-decay lightestscale (1 ± 0.05 eV), No neutrinoless double ?-decay lightest

Bahcall, John N.

2009-01-01T23:59:59.000Z

192

Neutrinoless Double Beta Decay in Light of SNO Salt Data  

E-Print Network [OSTI]

14] P. Vogel, “Limits From Neutrinoless Double-Beta Decay (Higgs, can also cause neutrinoless double-beta decay (seeLBNL-53996 Neutrinoless Double Beta Decay in Light of SNO

Murayama, Hitoshi

2009-01-01T23:59:59.000Z

193

Relativistic QRPA Calculation of {beta}-Decay Rates of r-process Nuclei  

SciTech Connect (OSTI)

A systematic, fully self-consistent calculation of {beta}-decay rates is presented, based on a microscopic theoretical framework. Analysis is performed on a large number of nuclei from the valley of {beta} stability towards the neutron drip-line. Nuclear ground state is determined using the Relativistic Hartree-Bogoliubov (RHB) model with density-dependent meson-nucleon coupling constants. Transition rates are calculated within the proton-neutron relativistic quasiparticle RPA (pn-RQRPA) using the same interaction that was used in the RHB equations.

Marketin, T.; Paar, N.; Niksic, T.; Vretenar, D. [Physics Department, University of Zagreb (Croatia); Ring, P. [Physik Department der Technischen Universitaet Muenchen (Germany)

2009-08-26T23:59:59.000Z

194

Measuring the proton spectrum in neutron decay - latest results with aSPECT  

E-Print Network [OSTI]

The retardation spectrometer aSPECT was built to measure the shape of the proton spectrum in free neutron decay with high precision. This allows us to determine the antineutrino electron angular correlation coefficient a. We aim for a precision more than one order of magnitude better than the present best value, which is Delta_a /a = 5%. In a recent beam time performed at the Institut Laue-Langevin during April / May 2008 we reached a statistical accuracy of about 2% per 24 hours measurement time. Several systematic effects were investigated experimentally. We expect the total relative uncertainty to be well below 5%.

M. Simson; F. Ayala Guardia; S. Baeßler; M. Borg; F. Glück; W. Heil; I. Konorov; G. Konrad; R. Muńoz Horta; K. K. H. Leung; Yu. Sobolev; T. Soldner; H. -F. Wirth; O. Zimmer

2008-11-24T23:59:59.000Z

195

Measuring the proton spectrum in neutron decay - latest results with aSPECT  

E-Print Network [OSTI]

The retardation spectrometer aSPECT was built to measure the shape of the proton spectrum in free neutron decay with high precision. This allows us to determine the antineutrino electron angular correlation coefficient a. We aim for a precision more than one order of magnitude better than the present best value, which is Delta_a /a = 5%. In a recent beam time performed at the Institut Laue-Langevin during April / May 2008 we reached a statistical accuracy of about 2% per 24 hours measurement time. Several systematic effects were investigated experimentally. We expect the total relative uncertainty to be well below 5%.

Simson, M; Baeßler, S; Borg, M; Glück, F; Heil, W; Konorov, I; Konrad, G; Horta, R Muńoz; Leung, K K H; Sobolev, Yu; Soldner, T; Wirth, H F; Zimmer, O

2008-01-01T23:59:59.000Z

196

auger decay spectra: Topics by E-print Network  

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

2008-01-01 44 Constraining Mass Spectra with Sterile Neutrinos from Neutrinoless Double Beta Decay, Tritium Beta Decay and Cosmology HEP - Experiment (arXiv) Summary: We...

197

A Search for Neutrinoless Double Beta Decay of Te-130.  

E-Print Network [OSTI]

??This dissertation describes an experimental search for neutrinoless double beta (0???) decay of 130Te. An observation of 0??? decay would establish that neutrinos are Majorana… (more)

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

198

Analysis of nuclear materials by energy dispersive x-ray fluorescence and spectral effects of alpha decay  

SciTech Connect (OSTI)

Energy dispersive X-ray fluorescence (EDXRF) spectra collected from alpha emitters are complicated by artifacts inherent to the alpha decay process, particularly when using portable instruments. For example, {sup 239}Pu EDXRF spectra exhibit a prominent uranium L X-ray emission peak series due to sample alpha decay rather than source-induced X-ray fluorescence. A portable EDXRF instrument was used to collect spectra from plutonium, americium, and a Pu-contaminated steel sample. The plutonium sample was also analyzed by wavelength dispersive XRF to demonstrate spectral differences observed when using these very different instruments.

Worley, Christopher G [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

199

88 Power Series 8.1 Introduction and Review of Power Series  

E-Print Network [OSTI]

88 Power Series Methods 8.1 Introduction and Review of Power Series In Section 3.3 we saw by inspection, linear equations with variable coefficients generally require the power series techniques - 2xy + n(n + 1)y = 0. In this section we introduce the power series method in its simplest form and

Sikora, Adam S.

200

Attenuation of excitation decay rate due to collective effect  

E-Print Network [OSTI]

We study a series of $N$ oscillators each coupled to its nearest neighbours, and linearly to a phonon field through the oscillator's number operator. We show that the Hamiltonian of a pair of adjacent oscillators, or a dimer, within the series of oscillators can be transformed to a form in which they are collectively coupled to the phonon field as a composite unit. In the weak coupling and rotating-wave approximation, the system behaves effectively like the trilinear boson model in the one excitation subspace of the dimer subsystem. The reduced dynamics of the one excitation subspace of the dimer subsystem coupled weakly to a phonon bath is similar to that of a two-level system, with a metastable state against the vacuum. The decay constant of the subsystem is proportional to the dephasing rate of the individual oscillator in a phonon bath, attenuated by a factor that depends on site asymmetry, intersite coupling and the resonance frequency between the transformed oscillator modes, or excitons. As a result of the collective effect, the excitation relaxation lifetime is prolonged over the dephasing lifetime of an individual oscillator coupled to the same bath.

B. A. Tay

2014-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

B, D and K Decays  

SciTech Connect (OSTI)

The present report documents the results of Working Group 2: B, D and K decays, of the workshop on Flavor in the Era of the LHC, held at CERN from November 2005 through March 2007. With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator facilities. While direct detection of new particles will be the main avenue to establish the presence of NP at the LHC, indirect searches will provide precious complementary information, since most probably it will not be possible to measure the full spectrum of new particles and their couplings through direct production. In particular, precision measurements and computations in the realm of flavor physics are expected to play a key role in constraining the unknown parameters of the Lagrangian of any NP model emerging from direct searches at the LHC. The aim of Working Group 2 was twofold: on one hand, to provide a coherent, up-to-date picture of the status of flavor physics before the start of the LHC; on the other hand, to initiate activities on the path towards integrating information on NP from high-p{sub T} and flavor data. This report is organized as follows. In Sec. 1, we give an overview of NP models, focusing on a few examples that have been discussed in some detail during the workshop, with a short description of the available computational tools for flavor observables in NP models. Sec. 2 contains a concise discussion of the main theoretical problem in flavor physics: the evaluation of the relevant hadronic matrix elements for weak decays. Sec. 3 contains a detailed discussion of NP effects in a set of flavor observables that we identified as 'benchmark channels' for NP searches. The experimental prospects for flavor physics at future facilities are discussed in Sec. 4. Finally, Sec. 5 contains some assessments on the work done at the workshop and the prospects for future developments.

Artuso, M.; Asner, D.M.; Ball, P.; Baracchini, E.; Bell, G.; Beneke, M.; Berryhill, J.; Bevan, A.; Bigi, I.I.; Blanke, M.; Bobeth, Ch.; Bona, M.; Borzumati, F.; Browder, T.; Buanes, T.; Buchalla, G.; Buchmuller, O.; Buras, A.J.; Burdin, S.; Cassel, D.G.; Cavanaugh, R.; /Syracuse U. /Carleton U. /Durham U., IPPP /Rome U. /INFN, Rome /Karlsruhe U. /RWTH Aachen U. /Fermilab /Queen Mary, U. of London /Notre Dame U. /Munich, Tech. U. /Munich, Max Planck Inst. /Dortmund U. /Annecy, LAPP /ICTP, Trieste /Taiwan, Natl. Central U. /Hawaii U. /Bergen U. /Munich U. /CERN /Liverpool U.

2008-03-07T23:59:59.000Z

202

beta-decay study of Cu-77  

E-Print Network [OSTI]

A beta-decay study of Cu-77 has been performed at the ISOLDE mass separator with the aim to deduce its beta-decay properties and to obtain spectroscopic information on Zn-77. Neutron-rich copper isotopes were produced by means of proton- or neutron-induced fission reactions on U-238. After the production, Cu-77 was selectively laser ionized, mass separated and sent to different detection systems where beta-gamma and beta-n coincidence data were collected. We report on the deduced half-live, decay scheme, and possible spin assignment of 77Cu.

N. Patronis; H. De Witte; M. Gorska; M. Huyse; K. Kruglov; D. Pauwels; K. Van de Vel; P. Van Duppen; J. Van Roosbroeck; J. -C. Thomas; S. Franchoo; J. Cederkall; V. N. Fedoseyev; H. Fynbo; U. Georg; O. Jonsson; U. Köster; T. Materna; L. Mathieu; O. Serot; L. Weissman; W. F. Mueller; V. I. Mishin; D. Fedorov

2009-09-01T23:59:59.000Z

203

Higgs boson decay to mu mubar gamma  

E-Print Network [OSTI]

The Higgs boson decay, H -> mu mubar gamma, is studied in the Standard Model at the tree and one-loop levels. It is shown that for Higgs boson masses above 110 GeV, the contribution to the radiative width from the one-loop level exceeds the contribution from the tree level, and for Higgs boson masses above 140 GeV, it even exceeds the contribution from the tree level decay H -> mu mubar. We also show that the contributions to the radiative decay width from the interference terms between the tree and one-loop diagrams are negligible.

Ali Abbasabadi; Wayne W. Repko

2000-04-17T23:59:59.000Z

204

Alpha decay chains from element 113  

E-Print Network [OSTI]

Theoretical estimates of $\\alpha$-decay half lives of several nuclei in the decay from element 113 are presented. Calculations in a WKB framework using DDM3Y interaction and experimental Q-values are in good agreement with the experimental data. Half life calculations are found to be quite sensitive to the Q-values and angular momenta transfers. Calculated decay lifetime decreases, owing to more penetrability as well as thinner barrier, as Q-value increases. Deviations to this predominant behaviour observed in some recent experimental data may be attributed to non zero spin-parities in some cases.

P. Roy Chowdhury; D. N. Basu; C. Samanta

2007-04-30T23:59:59.000Z

205

The strong decays of K1 resonances  

E-Print Network [OSTI]

We investigate the K1--> K pi pi strong interaction decays. Using the 3P0 quark-pair-creation model to derive the basic parametrization, we discuss in detail how to obtain the various partial wave amplitudes into the possible quasi-two-body decay channels as well as their relative phases from the currently available experimental data. We obtain the K1 mixing angle to be thetaK1= 60 deg, in agreement with previous works. Our study can be applied to extract the information needed for the photon polarization determination of the radiative B--> K1 gamma decay.

Andrey Tayduganov; Emi Kou; Alain Le Yaouanc

2011-11-27T23:59:59.000Z

206

Systematic expansion for infrared oscillator basis extrapolations  

E-Print Network [OSTI]

Recent work has demonstrated that the infrared effects of harmonic oscillator basis truncations are well approximated by imposing a partial-wave Dirichlet boundary condition at a properly identified radius L. This led to formulas for extrapolating the corresponding energy E_L and other observables to infinite L and thus infinite basis size. Here we reconsider the energy for a two-body system with a Dirichlet boundary condition at L to identify and test a consistent and systematic expansion for E_L that depends only on observables. We also generalize the energy extrapolation formula to nonzero angular momentum, and apply it to the deuteron. Formulas given previously for extrapolating the radius are derived in detail.

R. J. Furnstahl; S. N. More; T. Papenbrock

2014-03-20T23:59:59.000Z

207

Search for b-->u transitions in B- --> DK- and B- --> D*K- Decays  

E-Print Network [OSTI]

We report results from an updated study of the suppressed decays B- to D K- and B- to D* K- followed by D to K+pi-, where D(*) indicates a D(*)0 or an anti-D(*)0 meson, and D* decays to D pi0 or D gamma. These decays are sensitive to the CKM unitarity triangle angle gamma, due to interference between the b to c transition B- to D(*)0K- followed by the doubly Cabibbo-suppressed decay D0 to K+pi-, and the b to u transition B- to anti-D(*)0K- followed by the Cabibbo-favored decay anti-D0 to K+pi-. We also report an analysis of the decay B- to D(*)pi- with the D decaying into the doubly Cabibbo-suppressed mode D to K+pi-. Our results are based on 467 million Upsilon (4S) to B anti-B decays collected with the BaBar detector at SLAC. We measure the ratios R(*) of the suppressed ([K+pi-]_D K-/pi-) to favored ([K-pi+]_D K-/pi-) branching fractions as well as the CP asymmetries A(*) of those modes. We see indications of signals for the B- to D K- and B- to D*K-, D*->D pi0 suppressed modes, with statistical significances of 2.1 and 2.2 sigma, respectively, and we measure: R_{DK} = (1.1\\pm 0.6 \\pm 0.2)\\times 10^{-2}, A_{DK} = -0.86 \\pm 0.47 \\ ^{+0.12}_{-0.16}, R*_{(D pi0)K} = (1.8\\pm 0.9 \\pm 0.4)\\times 10^{-2}, A*_{(D pi0)K} = +0.77 \\pm 0.35\\pm 0.12, R*_{(D gamma)K} = (1.3\\pm 1.4\\pm 0.8 )\\times 10^{-2}, A*_{(D gamma)K} = +0.36 \\pm 0.94\\ ^{+0.25}_{-0.41}, where the first uncertainty is statistical and the second is systematic. We use a frequentist approach to obtain the magnitude of the ratio r_B = |A(B- to anti-D0 K-) / A(B- to D0K-)|= (9.5^{+5.1}_{-4.1})%, with r_BK- we find r*_B = |A(B^- to anti-D*0 K-)/A(B- to D*0 K-)|=(9.6^{+3.5}_{-5.1})%, with r*_B<15.0% at 90% confidence level.

The BABAR Collaboration; P. del Amo Sanchez et al.

2010-06-22T23:59:59.000Z

208

Climate Change Task Force Webinar Series | Department of Energy  

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

Climate Change Task Force Webinar Series Climate Change Task Force Webinar Series The four-part Climate Change Impacts and Indian Country webinar series provided tribal leaders an...

209

Double beta decay and neutrino mass models  

E-Print Network [OSTI]

Neutrinoless double beta decay allows to constrain lepton number violating extensions of the standard model. If neutrinos are Majorana particles, the mass mechanism will always contribute to the decay rate, however, it is not a priori guaranteed to be the dominant contribution in all models. Here, we discuss whether the mass mechanism dominates or not from the theory point of view. We classify all possible (scalar-mediated) short-range contributions to the decay rate according to the loop level, at which the corresponding models will generate Majorana neutrino masses, and discuss the expected relative size of the different contributions to the decay rate in each class. We also work out the phenomenology of one concrete 2-loop model in which both, mass mechanism and short-range diagram, might lead to competitive contributions, in some detail.

Helo, J C; Ota, T; Santos, F A Pereira dos

2015-01-01T23:59:59.000Z

210

CP Violation in Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We argue three-flavour neutrino mixing. We consider the neutrinos as Majorana particles and see how the neutrinoless double beta decay constrains the neutrino mixing angles. Our formulation is widely valid and is applied to the neutrino oscillation experiment.

T. Fukuyama; K. Matsuda; H. Nishiura

1997-08-19T23:59:59.000Z

211

Uncertainty evaluation of delayed neutron decay parameters  

E-Print Network [OSTI]

parameters fit their individual measurement data well in spite of these differences. This dissertation focuses on evaluation of the errors and methods of delayed neutron relative yields and decay constants for thermal fission of U-235. Various numerical...

Wang, Jinkai

2009-05-15T23:59:59.000Z

212

The BNL rare kaon decay program  

SciTech Connect (OSTI)

The rare kaon decay program at Brookhaven National Laboratory is reviewed. Results from the last round of experiments are briefly discussed. The three experiments currently collecting data are described. Prospects for future experiments are discussed.

Littenberg, L.

1996-12-31T23:59:59.000Z

213

New Physics Effects From B Meson Decays  

E-Print Network [OSTI]

In this talk, we point out some of the present and future possible signatures of physics beyond the Standard Model from B-meson decays, taking R-parity conserving and violating supersymmetry as illustrative examples.

Anirban Kundu

2000-03-23T23:59:59.000Z

214

Recent Results in Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The search for neutrinoless double beta decay is a rich source for new physics. The observation of this decay will lead to understanding of the absolute mass scale of neutrinos, the Majorana nature of the neutrino (whether the neutrino is its own anti-particle), and lepton number violation. Double beta decay is being investigated around the world by several experiments using different candidate isotopes. There has been much progress made in experimental techniques recently such that achieving sensitivity to neutrino masses at 50 meV and below will be possible in the near future. A summary of recent results in neutrinoless double beta decay is discussed with a look toward the experimental goals for the future.

Lisa J. Kaufman

2013-05-14T23:59:59.000Z

215

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

Gómez-Cadenas, J J

2015-01-01T23:59:59.000Z

216

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

J. J. Gómez-Cadenas; Justo Martín-Albo

2015-02-02T23:59:59.000Z

217

Three-body decay of (6)Be  

E-Print Network [OSTI]

Three-body correlations for the ground-state decay of the lightest two-proton emitter (6)Be are studied both theoretically and experimentally. Theoretical studies are performed in a three-body hyperspherical-harmonics cluster model...

Grigorenko, L. V.; Wiser, T. D.; Mercurio, K.; Charity, R. J.; Shane, R.; Sobotka, L. G.; Elson, J. M.; Wuosmaa, A. H.; Banu, A.; McCleskey, M.; Trache, L.; Tribble, Robert E.; Zhukov, M. V.

2009-01-01T23:59:59.000Z

218

Electrical Analogs of Atomic Radiative Decay Processes  

E-Print Network [OSTI]

Simple electrical circuits are analyzed, and the results show that for high frequencies they have frequency and time responses identical to the spontaneous radiative decays of atoms. As an illustration of the analogy a ...

Fontana, Peter R.; Srivastava, Rajendra P.

1977-03-01T23:59:59.000Z

219

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

J. J. Gómez-Cadenas; Justo Martín-Albo

2015-02-25T23:59:59.000Z

220

Can Dark Matter Decay in Dark Energy?  

E-Print Network [OSTI]

We analyze the interaction between Dark Energy and Dark Matter from a thermodynamical perspective. By assuming they have different temperatures, we study the possibility of occurring a decay from Dark Matter into Dark Energy, characterized by a negative parameter $Q$. We find that, if at least one of the fluids has non vanishing chemical potential, for instance $\\mu_x0$, the decay is possible, where $\\mu_x$ and $\\mu_{dm}$ are the chemical potentials of Dark Energy and Dark Matter, respectively. Using recent cosmological data, we find that, for a fairly simple interaction, the Dark Matter decay is favored with a probability of $\\sim 93%$ over the Dark Energy decay. This result comes from a likelihood analysis where only background evolution has been considered.

S. H. Pereira; J. F. Jesus

2009-02-26T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Theory of top quark production and decay  

SciTech Connect (OSTI)

Direct and indirect information on the top quark mass and its decay modes is reviewed. The theory of top production in hadron- and electron-positron-colliders is presented.

Kuehn, J.H. [Universitaet Karlsruhe (Germany)

1997-01-01T23:59:59.000Z

222

Probing QCD with Rare Charmless $B$ Decays  

SciTech Connect (OSTI)

Rare charmless hadronic B decays are a good testing ground for QCD. In this paper we describe a selection of new measurements made by the BABAR and BELLE collaborations.

Gradl, Wolfgang

2006-07-07T23:59:59.000Z

223

Measurement of indirect CP asymmetries in $D^0 \\to K^-K^+$ and $D^0 \\to \\pi^-\\pi^+$ decays  

E-Print Network [OSTI]

Time-dependent $CP$ asymmetries in the decay rates of the singly Cabibbo-suppressed decays $D^0\\rightarrow K^-K^+$ and $D^0\\rightarrow \\pi^-\\pi^+$ are measured in $pp$ collision data corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected by the LHCb experiment. The $D^0$ mesons are produced in semileptonic $b$-hadron decays, where the charge of the accompanying muon is used to determine the initial state as $D^0$ or $\\bar{D}^0$. The asymmetries in effective lifetimes between $D^0$ and $\\bar{D}^0$ decays, which are sensitive to indirect $CP$ violation, are determined to be \\begin{align*} A_{\\Gamma}(K^-K^+) = (-0.134 \\pm 0.077 \\; {}^{+0.026}_{-0.034})\\% \\ , \\\\ A_{\\Gamma}(\\pi^-\\pi^+) = (-0.092\\pm 0.145 \\; {}^{+0.025}_{-0.033})\\% \\ , \\end{align*} where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect $CP$ violation in $D^0$ decays.

Aaij, R; Adinolfi, M; Affolder, A; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P Alvarez; Alves, A A; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Anderson, J; Andreassen, R; Andreotti, M; Andrews, J E; Appleby, R B; Gutierrez, O Aquines; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Badalov, A; Baesso, C; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Belogurov, S; Belyaev, I; Ben-Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bertolin, A; Bettler, M -O; van Beuzekom, M; Bien, A; Bifani, S; Bird, T; Bizzeti, A; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borgia, A; Borsato, M; Bowcock, T J V; Bowen, E; Bozzi, C; Brett, D; Britsch, M; Britton, T; Brodzicka, J; Brook, N H; Bursche, A; Buytaert, J; Cadeddu, S; Calabrese, R; Calvi, M; Gomez, M Calvo; Campana, P; Perez, D Campora; Capriotti, L; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carniti, P; Carson, L; Akiba, K Carvalho; Mohr, RCM Casanova; Casse, G; Cassina, L; Garcia, L Castillo; Cattaneo, M; Cauet, Ch; Cavallero, G; Cenci, R; Charles, M; Charpentier, Ph; Chefdeville, M; Chen, S; Cheung, S -F; Chiapolini, N; Chrzaszcz, M; Vidal, X Cid; Ciezarek, G; Clarke, P E L; Clemencic, M; Cliff, H V; Closier, J; Coco, V; Cogan, J; Cogneras, E; Cogoni, V; Cojocariu, L; Collazuol, G; Collins, P; Comerma-Montells, A; Contu, A; Cook, A; Coombes, M; Coquereau, S; Corti, G; Corvo, M; Counts, I; Couturier, B; Cowan, G A; Craik, D C; Crocombe, A C; Torres, M Cruz; Cunliffe, S; Currie, R; D'Ambrosio, C; Dalseno, J; David, P; David, P N Y; Davis, A; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J M; De Paula, L; De Silva, W; De Simone, P; Dean, C -T; Decamp, D; Deckenhoff, M; Del Buono, L; Déléage, N; Derkach, D; Deschamps, O; Dettori, F; Dey, B; Di Canto, A; Di Domenico, A; Di Ruscio, F; Dijkstra, H; Donleavy, S; Dordei, F; Dorigo, M; Suárez, A Dosil; Dossett, D; Dovbnya, A; Dreimanis, KD; Dreimanis, K; Dujany, G; Dupertuis, F; Durante, P; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Eisenhardt, S; Eitschberger, U; Ekelhof, R; Eklund, L; Rifai, I El; Elsasser, Ch; Ely, S; Esen, S; Evans, H M; Evans, T; Falabella, A; Färber, C; Farinelli, C; Farley, N; Farry, S; Fay, R; Ferguson, D; Albor, V Fernandez; Rodrigues, F Ferreira; Ferro-Luzzi, M; Filippov, S; Fiore, M; Fiorini, M; Firlej, M; Fitzpatrick, C; Fiutowski, T; Fol, P; Fontana, M; Fontanelli, F; Forty, R; Francisco, O; Frank, M; Frei, C; Frosini, M; Fu, J; Furfaro, E; Torreira, A Gallas; Galli, D; Gallorini, S; Gambetta, S; Gandelman, M; Gandini, P; Gao, Y; Pardińas, J García; Garofoli, J; Tico, J Garra; Garrido, L; Gascon, D; Gaspar, C; Gastaldi, U; Gauld, R; Gavardi, L; Gazzoni, G; Geraci, A; Gersabeck, E; Gersabeck, M; Gershon, T; Ghez, Ph; Gianelle, A; Gianě, S; Gibson, V; Giubega, L; Gligorov, V V; Göbel, C; Golubkov, D; Golutvin, A; Gomes, A; Gotti, C; Gándara, M Grabalosa; Diaz, R Graciani; Cardoso, L A Granado; Graugés, E; Graverini, E; Graziani, G; Grecu, A; Greening, E; Gregson, S; Griffith, P; Grillo, L; Grünberg, O; Gui, B; Gushchin, E; Guz, Yu; Gys, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S C; Hall, S; Hamilton, B; Hampson, T; Han, X; Hansmann-Menzemer, S; Harnew, N; Harnew, S T; Harrison, J; He, J; Head, T; Heijne, V; Hennessy, K; Henrard, P; Henry, L; Morata, J A Hernando; van Herwijnen, E; Heß, M; Hicheur, A; Hill, D; Hoballah, M; Hombach, C; Hulsbergen, W; Humair, T; Hussain, N; Hutchcroft, D; Hynds, D; Idzik, M; Ilten, P; Jacobsson, R; Jaeger, A; Jalocha, J; Jans, E; Jawahery, A; Jing, F; John, M; Johnson, D; Jones, C R; Joram, C; Jost, B; Jurik, N; Kandybei, S; Kanso, W; Karacson, M; Karbach, T M; Karodia, S; Kelsey, M; Kenyon, I R; Kenzie, M; Ketel, T; Khanji, B; Khurewathanakul, C; Klaver, S; Klimaszewski, K; Kochebina, O; Kolpin, M; Komarov, I; Koopman, R F; Koppenburg, P; Korolev, M; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kucewicz, W; Kucharczyk, M; Kudryavtsev, V; Kurek, K; Kvaratskheliya, T; La Thi, V N; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lambert, R W; Lanfranchi, G; Langenbruch, C; Langhans, B; Latham, T; Lazzeroni, C; Gac, R Le; van Leerdam, J; Lees, J -P; Lefčvre, R; Leflat, A; Lefrançois, J; Leroy, O; Lesiak, T; Leverington, B; Li, Y; Likhomanenko, T; Liles, M; Lindner, R; Linn, C; Lionetto, F; Liu, B; Lohn, S; Longstaff, I; Lopes, J H; Lowdon, P; Lucchesi, D; Luo, H; Lupato, A; Luppi, E; Lupton, O; Machefert, F; Machikhiliyan, I V; Maciuc, F; Maev, O; Malde, S; Malinin, A; Manca, G; Mancinelli, G; Manning, P; Mapelli, A; Maratas, J; Marchand, J F; Marconi, U

2015-01-01T23:59:59.000Z

224

Heavy Quarkonium Production at LHC through W Boson Decays  

SciTech Connect (OSTI)

The production of the heavy (c{bar c})-quarkonium, (c{bar b})-quarkonium, and (b{bar b})-quarkonium states [({bar Q}') quarkonium for short], via the W{sup +} semi-inclusive decays, has been systematically studied within the framework of the nonrelativistic QCD. In addition to the two color-singlet S-wave states, we also discuss the production of the four color-singlet P-wave states |(Q{bar Q}')({sup 1}P{sub 1}){sub 1}> and |(Q{bar Q}')({sup 3}P{sub J}){sub 1}> [with J = (0,1,2)] together with the two color-octet components |(Q{bar Q}')({sup 1}S{sub 0}){sub 8}> and |(Q{bar Q}')({sup 3}S{sub 1}){sub 8}>. Improved trace technology is adopted to derive the simplified analytic expressions at the amplitude level, which shall be useful for dealing with the following cascade decay channels. At the LHC with the luminosity L {proportional_to} 10{sup 34} cm{sup -2} s{sup -1} and the center-of-mass energy {radical}S = 14 TeV, sizable heavy-quarkonium events can be produced through the W{sup +} boson decays; i.e., 2.57 x 10{sup 6} {eta}{sub c}, 2.65 x 10{sup 6} J/{Psi}, and 2.40 x 10{sup 6} P-wave charmonium events per year can be obtained, and 1.01 x 10{sup 5} B{sub c}, 9.11 x 10{sup 4} B*{sub c}, and 3.16 x 10{sup 4} P-wave (c{bar b})-quarkonium events per year can be obtained. Main theoretical uncertainties have also been discussed. By adding the uncertainties caused by the quark masses in quadrature, we obtain {Lambda}{sub W{sup +}{yields}(c{bar c})+c{bar s}} = 524.8{sub -258.4}{sup +396.3} KeV, {Lambda}{sub W{sup +}{yields}(c{bar b})+b{bar s}} = 13.5{sub -3.29}{sup +4.73} KeV, {Lambda}{sub W{sup +}{yields}(c{bar b})+c{bar c}} = 1.74{sub -0.73}{sup +1.98} KeV, and {Lambda}{sub W{sup +}{yields}(c{bar b})+c{bar b}} = 38.6{sub -9.69}{sup +13.4} eV.

Liao, Qi-Li; /Chongqing U.; Wu, Xing-Gang; /Chongqing U. /SLAC; Jiang, Jun; Yang, Zhi; Fang, Zhen-Yun; /Chongqing U.

2012-05-22T23:59:59.000Z

225

Neutrinoless double beta decay with scalar bilinears  

E-Print Network [OSTI]

One possible probe to physics beyond the standard model is to look for scalar bilinears, which couple to two fermions of the standard model. We point out that the scalar bilinears allow new diagrams contributing to the neutrinoless double beta decay. The upper bound on the neutrinoless double beta decay lifetime would then give new constraints on the ratio of the masses of these scalars to their couplings to the fermions.

H. V. Klapdor-Kleingrothaus; U. Sarkar

2002-11-18T23:59:59.000Z

226

Vacuum decay in a soluble model  

SciTech Connect (OSTI)

We study a field-theoretical model where the decay rate of the false vacuum can be computed up to the first quantum corrections in both the high-temperature and zero-temperature limits. We find that the dependence of the decay rate on the height and width of the potential barrier does not follow the same simple area rule as in the quantum-mechanical case. Furthermore, its behavior is strongly model dependent.

Ferraz de Camargo F, A.; Shellard, R.C.; Marques, G.C.

1984-03-15T23:59:59.000Z

227

Searches for neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double beta decay is a lepton number violating process whose observation would also establish that neutrinos are their own anti-particles. There are many experimental efforts with a variety of techniques. Some (EXO, Kamland-Zen, GERDA phase I and CANDLES) started take data in 2011 and EXO has reported the first measurement of the half life for the double beta decay with two neutrinos of $^{136}$Xe. The sensitivities of the different proposals are reviewed.

B. Schwingenheuer

2012-01-24T23:59:59.000Z

228

False Starts in History of Searches for 2{beta} Decay, or Discoverless Double Beta Decay  

SciTech Connect (OSTI)

A collection of stories is presented on discoveries of 2{beta} decay (including neutrinoless one) which were refuted in the subsequent investigations.

Tretyak, V. I. [Institute for Nuclear Research, MSP 03680, Kyiv (Ukraine)

2011-12-16T23:59:59.000Z

229

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

We study the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay when CP is not conserved. We give an explicit form of the decay rate in terms of a rephasing invariant quantity and demonstrate that in the presence of CP violation it is impossible to have vanishing neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do not mix with other leptons and hence decouple). UTPT-93-12 In the literature the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay has been studied extensively [1]. If the electron neutrino is a Majorana particle or a pseudo-Dirac particle (i.e., the symmetry of the mass matrix is not the symmetry of the weak interaction), then they can contribute to neutrinoless double beta decay, while if it is a Dirac particle then there is no neutrinoless double beta decay. A Dirac particle can be viewed as a combination of two Majorana particles

Patrick J. O’donnell; Utpal Sarkar

1993-01-01T23:59:59.000Z

230

Recent Results on Semileptonic Decays at Babar  

SciTech Connect (OSTI)

Some recent BABAR results on semileptonic decays are presented. They focus on the determination of the CKM matrix elements |V{sub ub}| and |V{sub cb}| in inclusive and exclusive b {yields} u{ell}v and b {yields} c{ell}v decays, and on form factors measurement in exclusive c {yields} s{ell}v decays. Semileptonic decays play a crucial role in the determination of the unitarity triangle parameters: decays of the b quark give access to the CKM matrix elements |V{sub ub}| and |V{sub cb}|, while charm decays provide a way to validate lattice QCD computations through form factors measurements. Such calculations provide theoretical inputs that are used, especially, in the b sector. A lot of new results have been obtained by the BABAR collaboration during the last years, thanks to the large b{bar b} and c{bar c} production cross-sections and to the large recorded statistics. Some of these measurements are presented here.

Serrano, Justine; /Orsay, LAL

2011-11-07T23:59:59.000Z

231

Ratios of heavy hadron semileptonic decay rates  

E-Print Network [OSTI]

Ratios of charmed meson and baryon semileptonic decay rates appear to be satisfactorily described by considering only the lowest-lying (S-wave) hadronic final states and assuming the kinematic factor describing phase space suppression is the same as that for free quarks. For example, the rate for $D_s$ semileptonic decay is known to be $(17.0 \\pm 5.3)%$ lower than those for $D^0$ or $D^+$, and the model accounts for this difference. When applied to hadrons containing $b$ quarks, this method implies that the $B_s$ semileptonic decay rate is about 1% higher than that of the nonstrange $B$ mesons. This small difference thus suggests surprisingly good local quark-hadron duality for $B$ semileptonic decays, complementing the expectation based on inclusive quark-hadron duality that these differences in rates should not exceed a few tenths of a percent. For $\\Lambda_b$ semileptonic decay, however, the inclusive rate is predicted to be about 13% greater than that of the nonstrange $B$ mesons. This value, representing a considerable departure from a calculation using a heavy quark expansion, is close to the corresponding experimental ratio $\\Gamma(\\Lambda_b)/ \\bar \\Gamma(B) = 1.13 \\pm 0.03$ of total decay rates.

Michael Gronau; Jonathan L. Rosner

2010-12-27T23:59:59.000Z

232

Calculated final state probability distributions for T2 -decay measurements  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1.6.1 Neutrinoless double beta decay . . . . . . . . . . . . . . . . . . . . 19 1.6.2 Cosmological

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

233

New results on direct CP violation in charged kaon decays by NA48/2  

E-Print Network [OSTI]

The NA48/2 result, based on the data collected during the 2003 run, on direct CP violation in $K^{\\pm}\\to\\pi^{\\pm}\\pi^0\\pi^0$ decay is presented. The main goal of the experiment is to reach a sensitivity at level of $10^{-4}$ in the measurement of the charge asymmetry parameter $A_g=(g^+-g^-)/(g^++g^-)$, where $g$ is the \\emph{linear slope} of the Dalitz plot in the $K\\to 3\\pi$ decay. Thanks to the simultaneous collection of the two kaon charges and to the high resolution of the main sub-detectors, the systematics uncertainties are kept under the statistical error level. The experimental procedure, the analysis technique and the main systematics are discussed to present the final result $$ A_g=(1.8\\pm2.6)\\times 10^{-4} $$ This result based on more than $45\\cdot10^6$ events, correspondig to one half of the whole two year data taking, is about an order of magnitude more precise with respect to the previous measurement.

G. Lamanna

2006-05-15T23:59:59.000Z

234

Exact Primitives for Time Series Data Mining  

E-Print Network [OSTI]

142 Sony AIBO Robot: Surfacetrajectories and ac- celerometer signals from SONY AIBOclasses of time series from the SONY AIBO accelerometer. (b)

Mueen, Abdullah Al

2012-01-01T23:59:59.000Z

235

Analysis of environmental influences in nuclear half-life measurements exhibiting time-dependent decay rates  

E-Print Network [OSTI]

In a recent series of papers evidence has been presented for correlations between solar activity and nuclear decay rates. This includes an apparent correlation between Earth-Sun distance and data taken at Brookhaven National Laboratory (BNL), and at the Physikalisch-Technische Bundesanstalt (PTB). Although these correlations could arise from a direct interaction between the decaying nuclei and some particles or fields emanating from the Sun, they could also represent an "environmental" effect arising from a seasonal variation of the sensitivities of the BNL and PTB detectors due to changes in temperature, relative humidity, background radiation, etc. In this paper, we present a detailed analysis of the responses of the detectors actually used in the BNL and PTB experiments, and show that sensitivities to seasonal variations in the respective detectors are likely too small to produce the observed fluctuations.

Jenkins, Jere H; Fischbach, Ephraim

2009-01-01T23:59:59.000Z

236

Analysis of environmental influences in nuclear half-life measurements exhibiting time-dependent decay rates  

E-Print Network [OSTI]

In a recent series of papers evidence has been presented for correlations between solar activity and nuclear decay rates. This includes an apparent correlation between Earth-Sun distance and data taken at Brookhaven National Laboratory (BNL), and at the Physikalisch-Technische Bundesanstalt (PTB). Although these correlations could arise from a direct interaction between the decaying nuclei and some particles or fields emanating from the Sun, they could also represent an "environmental" effect arising from a seasonal variation of the sensitivities of the BNL and PTB detectors due to changes in temperature, relative humidity, background radiation, etc. In this paper, we present a detailed analysis of the responses of the detectors actually used in the BNL and PTB experiments, and show that sensitivities to seasonal variations in the respective detectors are likely too small to produce the observed fluctuations.

Jere H. Jenkins; Daniel W. Mundy; Ephraim Fischbach

2009-12-29T23:59:59.000Z

237

Training Program Handbook: A systematic approach to training  

SciTech Connect (OSTI)

This DOE handbook describes a systematic method for establishing and maintaining training programs that meet the requirements and expectations of DOE Orders 5480.18B and 5480.20. The systematic approach to training includes 5 phases: Analysis, design, development, implementation, and evaluation.

Not Available

1994-08-01T23:59:59.000Z

238

Exact and Approximate Sampling by Systematic Stochastic Search  

E-Print Network [OSTI]

Exact and Approximate Sampling by Systematic Stochastic Search Vikash Mansinghka MIT BCS & CSAIL exact samples over high-dimensional spaces from exact sam- ples over lower-dimensional subspaces. Our do this by generalizing ideas from classic AI search to the stochastic setting. Just as systematic

Tenenbaum, Josh

239

BEAM RELATED SYSTEMATICS IN HIGGS BOSON MASS MEASUREMENT  

E-Print Network [OSTI]

BEAM RELATED SYSTEMATICS IN HIGGS BOSON MASS MEASUREMENT A.RASPEREZA DESY, Notkestrasse 85, D­22607#erential luminosity spectrum measurements and beam energy spread on the precision of the Higgs boson mass measurement possible impact of the beam related systematic errors on the Higgs boson mass measurement is discussed

240

Power line harmonic radiation: A systematic study using DEMETER spacecraft  

E-Print Network [OSTI]

Power line harmonic radiation: A systematic study using DEMETER spacecraft F. Nemec a,b,*, O of a systematic survey of Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft. DEME- TER frequency spacing corresponds well to the power system frequency at anticipated source locations. Moreover

Santolik, Ondrej

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


241

Scientific Correspondence Plant Systematics in the Age of Genomics  

E-Print Network [OSTI]

, New York 10458­5126 As plant biologists enter a new era in which com- parative genomics promises, the inestimable value and usefulness of robust systematic studies quickly be- come clear. In simplest terms, systematic studies can indicate which genomes in the plant kingdom to search, sample, and study

Law, Wayne

242

DRAM Decay: Using Decay Counters to Reduce Energy Consumption in DRAMs  

E-Print Network [OSTI]

DRAM Decay: Using Decay Counters to Reduce Energy Consumption in DRAMs Mrinmoy Ghosh Hsien-Hsin S. Lee School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, GA 30332 technology they use. For each refresh in a DRAM row, the stored information in each cell is read out

Lee, Hsien-Hsin "Sean"

243

Neutrino Decay and Neutrinoless Double Beta Decay in a 3-3-1 Model  

E-Print Network [OSTI]

In this work we show that the implementation of spontaneous breaking of the lepton number in the 3-3-1 model with right-handed neutrinos gives rise to fast neutrino decay with majoron emission and generates a bunch of new contributions to the neutrinoless double beta decay.

Alex G. Dias; A. Doff; C. A. de S. Pires; P. S. Rodrigues da Silva

2005-08-11T23:59:59.000Z

244

Neutrino decay and neutrinoless double beta decay in a 3-3-1 model  

SciTech Connect (OSTI)

In this work we show that the implementation of spontaneous breaking of the lepton number in the 3-3-1 model with right-handed neutrinos gives rise to fast neutrino decay with Majoron emission and generates a bunch of new contributions to the neutrinoless double beta decay.

Dias, Alex G. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66.318, 05315-970, Sao Paulo-SP (Brazil); Doff, A. [Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 Sao Paulo-SP (Brazil); Pires, C.A. de S; Rodrigues da Silva, P.S. [Departamento de Fisica, Universidade Federal da Paraiba, Caixa Postal 5008, 58051-970, Joao Pessoa-PB (Brazil)

2005-08-01T23:59:59.000Z

245

Time Series Analysis James D. Hamilton  

E-Print Network [OSTI]

Time Series Analysis James D. Hamilton Since its publication just over ten years ago, James Hamilton's Time Series Analysis has taken its place in the canon of modern technical eco- nomic literature study, Hamilton's book en- joyed popularity among econometricians in seminars in Europe and North

Landweber, Laura

246

Denman Forestry Issues Series: Washington's Forest Regulations  

E-Print Network [OSTI]

Denman Forestry Issues Series: Washington's Forest Regulations and Their Impacts on The Private College of Forest Resources continued its Denman Forestry Issues Series on May 30, 2001. Alumni landowners. Policy analysts and speakers representing the Washington Farm Forestry Assn., Washington Forest

Borenstein, Elhanan

247

Sustainability Bulletin USGBC Sustainable Speaker Series  

E-Print Network [OSTI]

series of events recognizing Earth Day and the need to increase sustainable living on campus. This yearMay 2014 Sustainability Bulletin #12;USGBC Sustainable Speaker Series May 13 Give and Go May 13th themselves from many of the technology devices that have become ubiquitous in our daily lives, and to start

Kidd, William S. F.

248

Statistical criteria for characterizing irradiance time series.  

SciTech Connect (OSTI)

We propose and examine several statistical criteria for characterizing time series of solar irradiance. Time series of irradiance are used in analyses that seek to quantify the performance of photovoltaic (PV) power systems over time. Time series of irradiance are either measured or are simulated using models. Simulations of irradiance are often calibrated to or generated from statistics for observed irradiance and simulations are validated by comparing the simulation output to the observed irradiance. Criteria used in this comparison should derive from the context of the analyses in which the simulated irradiance is to be used. We examine three statistics that characterize time series and their use as criteria for comparing time series. We demonstrate these statistics using observed irradiance data recorded in August 2007 in Las Vegas, Nevada, and in June 2009 in Albuquerque, New Mexico.

Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.

2010-10-01T23:59:59.000Z

249

Leptonic B Decays at BaBar  

SciTech Connect (OSTI)

The authors will present the most recent results on leptonic B decays B{sup {+-}(0)} {yields} K*{sup {+-}(0)} {nu}{bar {nu}} and B{sup {+-}} {yields} {mu}{sup {+-}}{nu}, based on the data collected by the BaBar detector at PEP-II, an asymmetric e{sup +}e{sup -} collider at the center of mass energy of the {Upsilon}(4S) resonance. Rare B decays have always been a standard probe for New Physics (NP) searches. The very low Standard Model (SM) rate of these decays often make them unaccessible with the present experimental datasets, unless NP effects enhance the rate up to the current experimental sensitivity. Moreover, as NP effects can modify the decay kinematic, particular attention must be payed in order to perform a model independent analysis. A B-Factory provides an unique environment where to investigate these processes. The high number of B{bar B} pairs produced by a B-Factory often allows to approach the needed experimental sensitivity. Moreover, the clean environment and the closed kinematic of the initial state enable to obtaining a very pure sample where to look for these decays.

Monorchio, Diego; /INFN, Naples /Naples U.

2011-09-13T23:59:59.000Z

250

The search for neutrinoless double beta decay  

E-Print Network [OSTI]

In the last two decades the search for neutrinoless double beta decay has evolved into one of the highest priorities for understanding neutrinos and the origin of mass. The main reason for this paradigm shift has been the discovery of neutrino oscillations, which clearly established the existence of massive neutrinos. An additional motivation for conducting such searches comes from the existence of an unconfirmed, but not refuted, claim of evidence for neutrinoless double decay in $^{76}\\text{Ge}$. As a consequence, a new generation of experiments, employing different detection techniques and $\\beta\\beta$ isotopes, is being actively promoted by experimental groups across the world. In addition, nuclear theorists are making remarkable progress in the calculation of the neutrinoless double beta decay nuclear matrix elements, thus eliminating a substantial part of the theoretical uncertainties affecting the particle physics interpretation of this process. In this report, we review the main aspects of the double beta decay process and some of the most relevant experiments. The picture that emerges is one where searching for neutrinoless double beta decay is recognized to have both far-reaching theoretical implications and promising prospects for experimental observation in the near future.

J. J. Gomez-Cadenas; J. Martin-Albo; M. Mezzetto; F. Monrabal; M. Sorel

2012-01-16T23:59:59.000Z

251

Random matrix description of decaying quantum systems  

E-Print Network [OSTI]

This contribution describes a statistical model for decaying quantum systems (e.g. photo-dissociation or -ionization). It takes the interference between direct and indirect decay processes explicitely into account. The resulting expressions for the partial decay amplitudes and the corresponding cross sections may be considered a many-channel many-resonance generalization of Fano's original work on resonance lineshapes [Phys. Rev 124, 1866 (1961)]. A statistical (random matrix) model is then introduced. It allows to describe chaotic scattering systems with tunable couplings to the decay channels. We focus on the autocorrelation function of the total (photo) cross section, and we find that it depends on the same combination of parameters, as the Fano-parameter distribution. These combinations are statistical variants of the one-channel Fano parameter. It is thus possible to study Fano interference (i.e. the interference between direct and indirect decay paths) on the basis of the autocorrelation function, and thereby in the regime of overlapping resonances. It allows us, to study the Fano interference in the limit of strongly overlapping resonances, where we find a persisting effect on the level of the weak localization correction.

T. Gorin

2005-10-04T23:59:59.000Z

252

Test Series 2. 3 detailed test plan  

SciTech Connect (OSTI)

Test Series 2.3 is chronologically the second of the five sub-series of tests which comprise Test Series 2, the second major Test Series as part of the combustion research phase to be carried out at the Grimethorpe Experimental Pressurised Fluidised Bed Combustion Facility. Test Series 2.3 will consist of 700 data gathering hours which is expected to require some 1035 coal burning hours. The tests will be performed using US supplied coal and dolomite. This will be the first major series of tests on the Facility with other than the UK datum coal and dolomite. The document summarises the background to the facility and the experimental program. Described are modifications which have been made to the facility following Test Series 2.1 and a series of Screening Tests. Detailed test objectives are specified as are the test conditions for the experiments which comprise the test series. The test results will provide information on the effects of the bed temperature, excess air level, Ca/S ratio, number of coal feed lines, and combustion efficiency and sulphur retention. A significant aspect of the test series will be part load tests which will investigate the performance of the facility under conditions of turn down which simulate load following concepts specified for two combined cycle concepts, i.e., their CFCC combined cycle and a turbo charged combined cycle. The material test plan is also presented. The principal feature of the materials programme is the planned exposure of a set of static turbine blade specimens in a cascade test loop to the high temperature, high pressure flue gas. A schedule for the programme is presented as are contingency plans.

Not Available

1983-12-01T23:59:59.000Z

253

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double beta decay violates lepton number by two units, a positive observation therefore necessarily implies physics beyond the standard model. Here, three possible contributions to neutrinoless double beta decay are briefly reviewed: (a) The mass mechanism and its connection to neutrino oscillations; (b) Left-right symmetric models and the lower limit on the right-handed W boson mass; and (c) R-parity violating supersymmetry. In addition, the recently published ``extended black box'' theorem is briefly discussed. Combined with data from oscillation experiments this theorem provides proof that the neutrinoless double beta decay amplitude must receive a non-zero contribution from the mass mechanism, if neutrinos are indeed Majorana particles.

M. Hirsch

2006-09-15T23:59:59.000Z

254

BES Results on Charmonium Decays and Transitions  

E-Print Network [OSTI]

Results are reported based on samples of 58 million $J/\\psi$ and 14 million $\\psi(2S)$ decays obtained by the BESII experiment. Improved branching fraction measurements are determined, including branching fractions for $J/\\psi\\to\\pi^+\\pi^-\\pi^0$, $\\psi(2S)\\to \\pi^0 J/\\psi$, $\\eta J/\\psi$, $\\pi^0 \\pi^0 J/\\psi$, anything $J/\\psi$, and $\\psi(2S)\\to\\gamma\\chi_{c1},\\gamma\\chi_{c2}\\to\\gamma\\gamma\\jpsi$. Using 14 million $\\psi(2S)$ events, $f_0(980)f_0(980)$ production in $\\chi_{c0}$ decays and $K^*(892)^0\\bar K^*(892)^0$ production in $\\chi_{cJ}~(J=0,1,2)$ decays are observed for the first time, and branching ratios are determined.

Frederick A. Harris

2004-09-29T23:59:59.000Z

255

Correlations and the neutrinoless double beta decay  

SciTech Connect (OSTI)

We explore the influence of the deformation on the nuclear matrix elements of the neutrinoless double beta decay (NME), concluding that the difference in deformation -or more generally on the amount of quadrupole correlations- between parent and grand daughter nuclei quenchs strongly the decay. We discuss how varies the nuclear matrix element of {sup 76}Ge decay when the wave functions of the two nuclei involved in the transition are constrained to reproduce the experimental occupancies. In the Interacting Shell Model description the value of the NME is enhanced about 15% compared to previous calculations, whereas in the QRPA the NME's are reduced by 20%-30%, thus, the discrepancies between both approaches diminish.

Menendez, J.; Poves, A. [Departamento de Fisica Teorica, and IFT, UAM-CSIC, Universidad Autonoma de Madrid, 28049-Madrid (Spain); Caurier, E.; Nowacki, F. [IPHC, IN2P3-CNRS/Universite Louis Pasteur, 67037-Strasbourg (France)

2009-11-09T23:59:59.000Z

256

Rare K decays: Challenges and Perspectives  

E-Print Network [OSTI]

At this stage of the LHC program, the prospect for a new physics signal in the very rare K ---> pi nu nu bar decays may be dented, but remains well alive thanks to their intrinsic qualities. First, these decays are among the cleanest observables in the quark flavor sector. When combined with their terrible suppression in the Standard Model, they thus offer uniquely sensitive probes. Second, the LHC capabilities are not ideal for all kinds of new physics, even below the TeV scale. For example, rather elusive scenarios like natural-SUSY-like hierarchical spectrum, baryon number violation, or new very light but very weakly interacting particles may well induce deviations in rare K decays. Even though experimentalists should brace themselves for tiny deviations, these modes thus have a clear role to play in the LHC era.

Christopher Smith

2014-09-22T23:59:59.000Z

257

Factorization in B to V gamma Decays  

SciTech Connect (OSTI)

The factorization properties of the radiative decays B {yields} V{gamma} are analyzed at leading order in 1/mb using the soft-collinear effective theory. It is shown that the decay amplitudes can be expressed in terms of a B {yields} V form factor evaluated at q{sup 2} = 0, light-cone distribution amplitudes of the B and V mesons, and calculable hard-scattering kernels. The renormalization-group equations in the effective theory are solved to resume perturbative logarithms of the different scales in the decay process. Phenomenological implications for the B {yields} K*{gamma} branching ratio, isospin asymmetry, and CP asymmetries are discussed, with particular emphasis on possible effects from physics beyond the Standard Model.

Becher, T

2005-03-28T23:59:59.000Z

258

BaBar: Rare Charmless B Decays  

SciTech Connect (OSTI)

Three two body and two resonance decays of the B mesons have been measured using data from the BABAR detector: B{sup 0} {yields} {pi}{sup {+-}}, K{sup {-+}}, K{sup +}K{sup -}, K{sub S}{sup 0}{pi}{sup +}{pi}{sup -} and B{sup 0} {yields} a{sub 1}{sup +}(1260){pi}{sup -}. The branching ratio and that of some intermediate resonances are presented along with the Cp asymmetry of the decay B{sup 0} {yields} K*{sup +}{pi}{sup -}.

Hutchcroft, D.; /Liverpool U.

2006-04-14T23:59:59.000Z

259

Simulated progress in double-beta decay  

SciTech Connect (OSTI)

A Monte Carlo code has been developed to accurately simulate double-beta decay measurements. Coincident gamma rays, beta spectra, and angular correlations have been added to adequately simulate a complete {sup 100}Mo nuclear decay and provide corrections to experimentally determined detector efficiencies. This code has been used to strip certain low-background spectra obtained in the Homestake gold mine in Lead, SD, for the purpose of extremely sensitive materials assay for the construction of new, large, enriched germanium detectors. Assays as low as 9 {mu}Bq/g of {sup 210}Pb in lead shielding were obtained.

Miley, H.S.; Arthur, R.J. [Pacific Northwest Lab., Richland, WA (United States); Avignone, F.T. [South Carolina Univ., Columbia, SC (United States)] [and others

1993-09-01T23:59:59.000Z

260

On the neutrinoless double ?{sup +}/EC decays  

SciTech Connect (OSTI)

The neutrinoless double positron-emission/electron-capture (0??{sup +}/EC) decays are studied for the magnitudes of the involved nuclear matrix elements (NMEs). Decays to the ground state, 0{sub gs}{sup +}, and excited 0{sup +} states are discussed. The participant many-body wave functions are evaluated in the framework of the quasiparticle random-phase approximation (QRPA). Effective, G-matrix-derived nuclear forces are used in realistic single-particle model spaces. The channels ?{sup +}?{sup +}, ?{sup +}EC, and the resonant neutrinoless double electron capture (R0?ECEC) are discussed.

Suhonen, Jouni [Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä (Finland)

2013-12-30T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

SU(3) Sum Rules for Charm Decay  

E-Print Network [OSTI]

We present flavor SU(3) sum rules for $D \\to PP$ and $D \\to PV$ decay amplitudes, that are valid to second order in symmetry breaking by the strange quark mass spurion. Decay rate sum rules are also computed to this order. Particular attention is given to sum rules arising from the isospin and U-spin subgroups, the former providing sensitive tests for alternative sources of SU(3) breaking. We apply the latter together with the postulated $\\Delta U = 0$ rule for the large penguin picture to predict the ratio and difference of the direct CP asymmetries for $D \\to KK^*$ and $D \\to \\pi \\rho$.

Yuval Grossman; Dean J Robinson

2012-11-14T23:59:59.000Z

262

The double-beta decay: Theoretical challenges  

SciTech Connect (OSTI)

Neutrinoless double beta decay is a unique process that could reveal physics beyond the Standard Model of particle physics namely, if observed, it would prove that neutrinos are Majorana particles. In addition, it could provide information regarding the neutrino masses and their hierarchy, provided that reliable nuclear matrix elements can be obtained. The two neutrino double beta decay is an associate process that is allowed by the Standard Model, and it was observed for about ten nuclei. The present contribution gives a brief review of the theoretical challenges associated with these two process, emphasizing the reliable calculation of the associated nuclear matrix elements.

Horoi, Mihai [Department of Physics, Central Michigan University, Mount Pleasant, Michigan, 48859 (United States)

2012-11-20T23:59:59.000Z

263

Neutrinoless double beta decay and neutrino masses  

SciTech Connect (OSTI)

Neutrinoless double beta decay (0{nu}{beta}{beta}) is a promising test for lepton number violating physics beyond the standard model (SM) of particle physics. There is a deep connection between this decay and the phenomenon of neutrino masses. In particular, we will discuss the relation between 0{nu}{beta}{beta} and Majorana neutrino masses provided by the so-called Schechter-Valle theorem in a quantitative way. Furthermore, we will present an experimental cross check to discriminate 0{nu}{beta}{beta} from unknown nuclear background using only one isotope, i.e., within one experiment.

Duerr, Michael [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)

2012-07-27T23:59:59.000Z

264

Electromagnetic corrections to pseudoscalar decay constants  

E-Print Network [OSTI]

The effects of electromagnetic interactions on pseudoscalar decay constants are investigated. Using a compact QED and QCD action we are able to resolve differences of about 0.1 MeV. We obtain the preliminary results f_pi^0-f_pi^+/- =0.09(3) MeV and f_D^0-f_D^+/- =0.79(11) MeV for light and charmed pseudoscalar decay constants on a N_f=2 nonperturbatively improved Sheikholeslami-Wohlert ensemble.

Benjamin Glaessle; Gunnar S. Bali

2011-11-16T23:59:59.000Z

265

Detecting Double Beta Decays Using Nuclear Emulsions  

E-Print Network [OSTI]

Neutrino nature and absolute mass scale are major questions in particle physics which cannot be addressed by the present neutrino oscillation program. To answer these two questions, several neutrinoless double beta decay experiments are underway or planed for the near future. These experiments, mainly use bolometric techniques or gaseous counters coupled with scintillator detectors. The energy resolution is better in bolometric experiments but experiments coupling tracking with calorimetry have the advantage of observing the two electron tracks and remove many background sources. Here, we present a proposal of using nuclear emulsions to observe double beta decays. This technique has the advantage of precise tracking and vertexing even for low energy electrons.

Marcos Dracos

2008-05-20T23:59:59.000Z

266

Neutrinoless double beta decay and nuclear matrix elements  

SciTech Connect (OSTI)

The fundamental importance of searching for neutrinoless double-beta decay (0{nu}{beta}{beta}-decay) is widely recognized. Observation of the decay would tell us that the total lepton number is not conserved and that, consequently, neutrinos are massive Majorana fermions. The 0{nu}{beta}{beta}-decay is discussed in context of neutrino oscillation data. The perspectives of the experimental 0{nu}{beta}{beta}-decay searches are analyzed. The importance of reliable determination of the 0{nu}{beta}{beta}-decay nuclear matrix elements is pointed out.

Simkovic, Fedor [BLTP, JINR Dubna, 141980 Dubna, Moscow region (Russian Federation); Comenius University, Mlynska dolina, Bratislava (Slovakia)

2011-11-23T23:59:59.000Z

267

Neutrinoless double beta decay in deformed nuclei: its implications in particle and nuclear physics .  

E-Print Network [OSTI]

??In my thesis, we calculated the Nuclear Matrix Elements (NME) for neutrinoless double beta decay (0??? decay). Neutrinoless double beta decay is a rare nuclear… (more)

Fang, DongLiang

2011-01-01T23:59:59.000Z

268

Measurement of the Top Quark Mass Simultaneously in Dilepton and Lepton + Jets Decay Channels  

SciTech Connect (OSTI)

The authors present the first measurement of the top quark mass using simultaneously data from two decay channels. They use a data sample of {radical}s = 1.96 TeV collisions with integrated luminosity of 1.9 fb{sup -1} collected by the CDF II detector. They select dilepton and lepton + jets channel decays of t{bar t} pairs and reconstruct two observables in each topology. They use non-parametric techniques to derive probability density functions from simulated signal and background samples. The observables are the reconstructed top quark mass and the scalar sum of transverse energy of the event in the dilepton topology and the reconstructed top quark mass and the invariant mass of jets from the W boson decay in lepton + jets channel. They perform a simultaneous fit for the top quark mass and the jet energy scale which is constrained in situ by the hadronic W boson resonance from the lepton + jets channel. Using 144 dilepton candidate events and 332 lepton + jets candidate events they measure: M{sub top} = 171.9 {+-} 1.7 (stat. + JES) {+-} 1.1 (other sys.) GeV/c{sup 2} = 171.9 {+-} 2.0 GeV/c{sup 2}. The measurement features a robust treatment of the systematic uncertainties, correlated between the two channels and develops techniques for a future top quark mass measurement simultaneously in all decay channels. Measurements of the W boson mass and the top quark mass provide a constraint on the mass of the yet unobserved Higgs boson. The Higgs boson mass implied by measurement presented here is higher than Higgs boson mass implied by previously published, most precise CDF measurements of the top quark mass in lepton + jets and dilepton channels separately.

Fedorko, Wojciech T.; /Chicago U.

2008-09-01T23:59:59.000Z

269

Observation of the Upsilon(13DJ ) Bottomonium State through Decays to pi+pi-Upsilon(1S)  

SciTech Connect (OSTI)

Based on 122X10{sup 6} {upsilon}(3S) events collected with the BABAR detector, we have observed the {upsilon}(1{sup 3}D{sub J}) bottomonium state through the {upsilon}(3S){yields}{gamma}{gamma}{upsilon}(1{sup 3}D{sub J}){yields}{gamma}{gamma}{pi}{sub +}{pi}{sub -}{upsilon}(1S) decay chain. The significance is 6.2 standard deviations including systematic uncertainties. The mass of the J = 2 member of the {upsilon}(1{sup 3}D{sub J}) triplet is determined to be 10164.5{-+}0.8 (stat.) {-+} 0.5 (syst.) MeV/c{sup 2}. We use the {pi}{sup +}{pi}{sup -} invariant mass and decay angular distributions to confirm the consistency of the observed state with the orbital angular momentum and parity assignments of the {upsilon}(1{sup 3}D{sub J}).

del Amo Sanchez, P.; Lees, J.P.; Poireau, V.; Prencipe, E.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Martinelli, M.; Palano, A.; Pappagallo, M.; /INFN, Bari /Bari U.; Eigen, G.; Stugu, B.; Sun, L.; /Bergen U.; Battaglia, M.; Brown, D.N.; Hooberman, B.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; Osipenkov, I.L.; Tanabe, T.; /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /INFN, Ferrara /Frascati /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /Indian Inst. Tech., Guwahati /Harvard U. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U. /INFN, Milan /Milan U. /INFN, Milan /INFN, Milan /Milan U. /Mississippi U. /Montreal U. /INFN, Naples /Naples U. /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U. /Oregon U. /INFN, Padua /Padua U. /INFN, Padua /INFN, Padua /Padua U. /Paris U., VI-VII /INFN, Perugia /Perugia U. /INFN, Pisa /Pisa U. /INFN, Pisa /Pisa, Scuola Normale Superiore /INFN, Pisa /Pisa U. /INFN, Pisa /Princeton U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /Rostock U. /Rutherford /DAPNIA, Saclay /SLAC /South Carolina U. /Southern Methodist U. /Stanford U., Phys. Dept. /SUNY, Albany /Tel Aviv U. /Tennessee U. /Texas U. /Texas U., Dallas /INFN, Turin /Turin U. /INFN, Trieste /Trieste U. /Valencia U. /Victoria U. /Warwick U. /Wisconsin U., Madison

2010-06-02T23:59:59.000Z

270

Latin American & Caribbean Studies Seminar Series  

E-Print Network [OSTI]

S Latin American & Caribbean Studies Seminar Series Learn more: www.LatinAmerica.isp.msu.edu All presentations take place in room 201 International Center at 3:00-4:30 pm unless noted. September 14 Caribbean

Liu, Taosheng

271

Frontiers in Global Change Seminar Series presents ...  

E-Print Network [OSTI]

Frontiers in Global Change Seminar Series presents ... The Frozen Ocean of Snowball Earth Monday in the interaction of solar radiation with snow, clouds, and sea ice, and their role in climate. His work has driven

272

Summer Series 2012 - Conversation with Omar Yaghi  

ScienceCinema (OSTI)

Jeff Miller, head of Public Affairs, sat down in conversation with Omar Yaghi, director of the Molecular Foundry, in the first of a series of "powerpoint-free" talks on July 11th 2012, at Berkeley Lab.

Omar Yaghi

2013-06-24T23:59:59.000Z

273

2012-2013 Series College of Agriculture  

E-Print Network [OSTI]

2012-2013 Series College of Agriculture and School of Human Environmental Sciences University about the accreditation of University of Kentucky. AgriculturalBiotechnology Agriculturalbiotechnologyencompassescellularandmolecularapproaches to the manipulation and improvement of agricultural plants, animals and microorganisms

Hayes, Jane E.

274

Human Biology Program Brown Bag Series  

E-Print Network [OSTI]

Human Biology Program Brown Bag Series Fall 2012 12:001:00 pm Morrison Hall 103 SeptemberVisser Department of Biology & Human Biology Prog. "Good Behavior, Bad Behavior: Insights From the Microbial

Indiana University

275

Security Lab Series Introduction to Web Technologies  

E-Print Network [OSTI]

Security Lab Series Introduction to Web Technologies Prof. Lixin Tao Pace University http...........................................................................................................................................1 1.1 Web ArchitectureScript..................................................................................16 4.6 Creating Your First JavaServer Page Web Application

Tao, Lixin

276

Frontiers in Chemical Imaging Seminar Series  

E-Print Network [OSTI]

Frontiers in Chemical Imaging Seminar Series On the trail of the Chimera The Atom the Chimera is still elusive. 1. Thomas F. Kelly and David J. Larson. Ann Rev. Materials Res 42 (2012) 1. 2

277

ORC Seminar Series Presents: "Nonlinear laser lithography  

E-Print Network [OSTI]

ORC Seminar Series Presents: "Nonlinear laser lithography: formation of self-authored 50 journal and more than 150 conference papers and he has given more than 100 invited talks. http://www.orc

Anderson, Jim

278

Advances in Photosynthesis and Respiration Series Editor  

E-Print Network [OSTI]

Springer Advances in Photosynthesis and Respiration Series Editor: Govindjee, University of Illinois at Urbana-Champaign, USA Volume 29 Photosynthesis in silico Understanding Complexity from Molecules to Ecosystems Edited by; A. Laisk, L. Nedbal, and Govindjee Photosynthesis in silico

Govindjee "Gov"

279

Dual Lindstedt series and KAM theorem  

E-Print Network [OSTI]

We prove that exists a Lindstedt series that holds when a Hamiltonian is driven by a perturbation going to infinity. This series appears to be dual to a standard Lindstedt series as it can be obtained by interchanging the role of the perturbation and the unperturbed system. The existence of this dual series implies that a dual KAM theorem holds and, when a leading order Hamiltonian exists that is non degenerate, the effect of tori reforming can be observed with a system passing from regular motion to fully developed chaos and back to regular motion with the reappearance of invariant tori. We apply these results to a perturbed harmonic oscillator proving numerically the appearance of tori reforming. Tori reforming appears as an effect limiting chaotic behavior to a finite range of parameter space of some Hamiltonian systems. Dual KAM theorem, as proved here, applies when the perturbation, combined with a kinetic term, provides again an integrable system.

Marco Frasca

2009-09-09T23:59:59.000Z

280

Summer Series 2012 - Conversation with Kathy Yelick  

ScienceCinema (OSTI)

Jeff Miller, head of Public Affairs, sat down in conversation with Kathy Yelick, Associate Berkeley Lab Director, Computing Sciences, in the second of a series of "powerpoint-free" talks on July 18th 2012, at Berkeley Lab.

Kathy Yelick

2013-06-24T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Environmental Research Group 2014 Fall Seminar Series  

E-Print Network [OSTI]

Environmental Research Group 2014 Fall Seminar Series October 24, 2014 Gregg 320, 12:00 ­ 1 of five hours, the city of Boston would have sustained even more damage from Hurricane Sandy than New York

282

Measurement of CP Content and Time-Dependent CP Violation in B0 --> D*+D*- Decays  

SciTech Connect (OSTI)

This dissertation presents the measurement of the Cp-odd fraction and time-dependent CP violation parameters for the B{sup 0} {yields} D*{sup +} D*{sup -} decay. These results are based on the full BABAR dataset of (467 {+-} 5) x 10{sup 6} B{bar B} pairs collected at the PEP-II B Factory at the Stanford Linear Accelerator Center. An angular analysis finds that the CP-odd fraction of the B{sup 0} {yields} D*{sup +} D*{sup -} decay is R{sub {perpendicular}} = 0.158 {+-} 0.028 {+-} 0.006, where the first uncertainty is statistical, and the second is systematic. A fit to the flavor-tagged, time-dependent, angular decay rate yields C{sub +} = 0.02 {+-} 0.12 {+-} 0.02; C{sub {perpendicular}} = 0.41 {+-} 0.50 {+-} 0.08; S{sub +} = -0.76 {+-} 0.16 {+-} 0.04; S{sub {perpendicular}} = -1.81 {+-} 0.71 {+-} 0.16, for the CP-odd ({perpendicular}) and CP-even (+) contributions. Constraining these two contributions to be the same results in C = 0.047 {+-} 0.091 {+-} 0.019; S = -0.71 {+-} 0.16 {+-} 0.03. These measurements are consistent with the Standard Model and with measurements of sin2{beta} from B{sup 0} {yields} (c{bar c})K{sup 0} decays.

Anderson, Jacob M.; /SLAC; ,

2009-01-05T23:59:59.000Z

283

Laboratory services series: a programmed maintenance system  

SciTech Connect (OSTI)

The diverse facilities, operations and equipment at a major national research and development laboratory require a systematic, analytical approach to operating equipment maintenance. A computer-scheduled preventive maintenance program is described including program development, equipment identification, maintenance and inspection instructions, scheduling, personnel, and equipment history.

Tuxbury, D.C.; Srite, B.E.

1980-01-01T23:59:59.000Z

284

Turbulencelike Behavior of Seismic Time Series  

SciTech Connect (OSTI)

We report on a stochastic analysis of Earth's vertical velocity time series by using methods originally developed for complex hierarchical systems and, in particular, for turbulent flows. Analysis of the fluctuations of the detrended increments of the series reveals a pronounced transition in their probability density function from Gaussian to non-Gaussian. The transition occurs 5-10 hours prior to a moderate or large earthquake, hence representing a new and reliable precursor for detecting such earthquakes.

Manshour, P.; Saberi, S. [Department of Physics, Sharif University of Technology, Tehran 11155-9161 (Iran, Islamic Republic of); Sahimi, Muhammad [Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089-1211 (United States); Peinke, J. [Institute of Physics, Carl von Ossietzky University, D-26111 Oldenburg (Germany); Pacheco, Amalio F. [Department of Theoretical Physics, University of Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza (Spain); Rahimi Tabar, M. Reza [Department of Physics, Sharif University of Technology, Tehran 11155-9161 (Iran, Islamic Republic of); Institute of Physics, Carl von Ossietzky University, D-26111 Oldenburg (Germany); CNRS UMR 6202, Observatoire de la Cote d'Azur, BP 4229, 06304 Nice Cedex 4 (France)

2009-01-09T23:59:59.000Z

285

Search for rare and forbidden eta ' decays  

E-Print Network [OSTI]

We have searched for rare and forbidden decays of the eta' meson in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb(-1) of e(+)e(-) collisions at 10.6 GeV center-of-mass energy at the Cornell Electron Storage Ring. We...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, X.

2000-01-01T23:59:59.000Z

286

Search for neutrinoless ? decays: ??e? and ????  

E-Print Network [OSTI]

A search for the lepton-family-number-violating decays ??e? and ???? has been performed using CLEO II data. No evidence of a signal has been found and the corresponding upper limits are B(??e?)<2.7×10(-6) and B(????)<3.0×10(-6) at 90% C.L....

Baringer, Philip S.

1997-04-01T23:59:59.000Z

287

New limits for neutrinoless tau decays  

E-Print Network [OSTI]

Neutrinoless 3-prong tau lepton decays into a charged lepton and either two charged particles or one neutral meson have been searched for using 4.79fb(-1) of data collected with the CLEO II detector at Cornell Electron Storage Ring. This analysis...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L.

1998-05-01T23:59:59.000Z

288

Nuclear physics aspects of double beta decay  

E-Print Network [OSTI]

Comprehensive description of the phenomenology of the $\\beta\\beta$ decay is given, with emphasis on the nuclear physics aspects. After a brief review of the neutrino oscillation results and of motivation to test the lepton number conservation, the mechanism of the $0\

Petr Vogel

2008-07-15T23:59:59.000Z

289

Neutrinoless double beta decay in seesaw models  

E-Print Network [OSTI]

We study the general phenomenology of neutrinoless double beta decay in seesaw models. In particular, we focus on the dependence of the neutrinoless double beta decay rate on the mass of the extra states introduced to account for the Majorana masses of light neutrinos. For this purpose, we compute the nuclear matrix elements as functions of the mass of the mediating fermions and estimate the associated uncertainties. We then discuss what can be inferred on the seesaw model parameters in the different mass regimes and clarify how the contribution of the light neutrinos should always be taken into account when deriving bounds on the extra parameters. Conversely, the extra states can also have a significant impact, cancelling the Standard Model neutrino contribution for masses lighter than the nuclear scale and leading to vanishing neutrinoless double beta decay amplitudes even if neutrinos are Majorana particles. We also discuss how seesaw models could reconcile large rates of neutrinoless double beta decay with more stringent cosmological bounds on neutrino masses.

Mattias Blennow; Enrique Fernandez-Martinez; Jacobo Lopez-Pavon; Javier Menendez

2014-05-12T23:59:59.000Z

290

Neutrinoless Double $?$-Decay: Status and Future  

E-Print Network [OSTI]

A brief summary of the status of neutrino masses, mixing and oscillations is presented. Neutrinoless double $\\beta$-decay is considered. Predictions for the effective Majorana mass are reviewed. A possible test of the calculations of nuclear matrix elements of the $0\

S. M. Bilenky

2005-09-11T23:59:59.000Z

291

Higgs Bosons from Top Quark Decays  

E-Print Network [OSTI]

In light of the discovery of a Standard Model (SM)-like Higgs boson ($h$) at the LHC, we investigate the top quark to Higgs boson transition $t\\rightarrow W^{*}bh$, which is the leading $t\\to h$ decay mode in the SM. We find the decay branching fraction to be $1.80\\times 10^{-9}$. In comparison, the two-body, loop-induced $t\\rightarrow ch$ transition occurs at $\\sim10^{-14}$ in the SM. We consider the consequences of gauge invariant dimension-6 operators affecting the $t\\bar{t}h$ interaction and find that the decay branching fraction may be increased by a factor of two within current constraints on the coupling parameters from collider experiments. We also extend the calculation to the CP-conserving Type I and Type II Two Higgs Doublet Models (2HDM), including both CP-even and CP-odd Higgs bosons. For neutral scalar masses at about $100$ GeV, the decay rates can be several times larger than the SM result in the allowed range of model parameters. Observation prospects at present and future colliders are briefly addressed.

Tao Han; Richard Ruiz

2014-04-28T23:59:59.000Z

292

Non-leptonic decays of charmed mesons into two Pseudoscalars  

E-Print Network [OSTI]

We examine the role of resonant coupled channel final state interactions (FSI), as well as weak annihilation and exchange contributions in explaining all the two body hadronic $D\\rightarrow PP$ decay modes data. In the un-unitarized amplitudes we include modified Wilson coefficients with non-factorizable corrections as parameters. For the hadronic form factors the z-series expansion method is used to get the $q^2$ dependence. The FSI effects are incorporated via a phenomenological approach with widths of resonances to various channels taken from observations where available, and others as additional parameters to be determined from fits of all the theoretical rates to the measured ones. Our results for the rather hard to explain $D^0\\rightarrow K^+K^-, \\pi^+\\pi^- $ are in agreement with measured values. We demonstrate that both weak exchange as well as FSI effects are required to get the correct branching ratio for the $D^0\\rightarrow K^0\\bar{K^0}$ mode. Using our unitarized amplitudes we evaluate the strong ...

Biswas, Aritra; Abbas, Gauhar

2015-01-01T23:59:59.000Z

293

Radiative decays of the psi prime to all-photon final states  

SciTech Connect (OSTI)

Results of studies of selected radiative decays of the psi' to charmonium and non-charmonium states which decay into photons are presented. These studies were performed using a sample of 1.8 x 10/sup 6/ produced psi''s collected by the Crystal Ball detector at the SPEAR electron-positron storage ring. The branching ratios of the chi/sub 0/, chi/sub 2/, and eta'/sub c/ to two photons have been measured to be (4.5 +- 2.2 +- 2.0) x 10/sup -4/, (9.5 +- 2.9 +- 4.5) x 10/sup -4/ (first errors statistical, second systematic), and <1 x 10/sup -2/ (90% C.L.). The signal from the decay chain psi' ..-->.. ..gamma..chi/sub 0/, chi/sub 0/ ..-->.. ..pi../sup 0/..pi../sup 0/ has been observed with essentially no background. Using the observed line shape of the radiative photon in this reaction, the full width of the psi/sub 0/ has been found to be 8.8 +- 1.3 +- 1.5 MeV/c/sup 2/. In addition, the branching ratios of the chi/sub 0/ and chi/sub 2/ to ..pi../sup 0/..pi../sup 0/ have been measured to be (3.5 +- 0.3 +- 1.2) x 10/sup -3/ and (1.2 +- 0.2 +- 0.4) x 10/sup -3/; the branching ratios of the chi/sub 0/ and chi/sub 2/ to eta eta have been measured to be (2.8 +- 0.9 +- 1.3) x 10/sup -3/ and (8.4 +- 4.2 +- 4.0) x 10/sup -4/. The decays of the psi' to four non-charmonium states have been investigated. The branching ratios and upper limits of these decays have been normalized to the branching ratios of the corresponding decays from the J/psi which have been measured using a sample of 2.2 x 10/sup 6/ produced J/psi's collected by the Crystal Ball detector. The ratios of the psi' branching ratios to the J/psi branching ratios for the final states ..gamma..eta, ..gamma..eta', ..gamma..theta, and ..gamma..f have been measured to be <1.8%, <2.6%, <10 to 15%, and 9 +- 3%. These results are compared with the theoretical expectations of lowest-order quantum chromodynamics potential models. Substantial disagreement is found between theory and experiment.

Lee, R.A.

1985-06-01T23:59:59.000Z

294

On compensation of systematic manufacturing variations in physical design  

E-Print Network [OSTI]

2004. P. Gupta, F. -L. Heng, M. Lavin, “Merits of CellwiseManufacturing, 2004. F. -L. Heng, P. Gupta, R. L. Gordon, K.P. Gupta and F. -L. Heng, “Toward a Systematic-Variation

Gupta, Puneet

2007-01-01T23:59:59.000Z

295

A systematic analysis of defenses against code reuse attacks  

E-Print Network [OSTI]

In this thesis, we developed a systematic model of the code reuse attack space where facts about attacks and defenses were represented as propositional statements in boolean logic and the possibility of deploying malware ...

Casteel, Kelly (Kelly C.)

2013-01-01T23:59:59.000Z

296

A Systematic Approach to Creating and Maintaining Software Documentation  

E-Print Network [OSTI]

and SODOS integrated database management systems with the software documentation associatedUVA A Systematic Approach to Creating and Maintaining Software Documentation Allison L. Powell CODE INTERFACE BROWSING INTERFACE STATUS FUTURE PLANS WHY SOFTWARE DOCUMENTATION AS AN APPLICATION AREA

French, James C.

297

Advance of Systematic Design Methods on Fuzzy Control  

E-Print Network [OSTI]

The heating, ventilation and air-conditioning (HVAC) system possesses some characteristics such as multi-parameters, nonlinear, and coupled parameters. Aimed at control problems, the author targets real-time fuzzy control and research systematically...

Zhang, J.; Chen, Y.

2006-01-01T23:59:59.000Z

298

acquisition systematic review: Topics by E-print Network  

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

Cochrane Library 2010, Issue 10 (see unknown authors 2010-01-01 76 Association Between Gout and All-Cause as well as Cardiovascular Mortality: A Systematic Review CiteSeer...

299

areas systematic review: Topics by E-print Network  

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

Cochrane Library 2010, Issue 10 (see unknown authors 2010-01-01 77 Association Between Gout and All-Cause as well as Cardiovascular Mortality: A Systematic Review CiteSeer...

300

agonists systematic review: Topics by E-print Network  

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

Cochrane Library 2010, Issue 10 (see unknown authors 2010-01-01 77 Association Between Gout and All-Cause as well as Cardiovascular Mortality: A Systematic Review CiteSeer...

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Life cycle evolution and systematics of Campanulariid hydrozoans  

E-Print Network [OSTI]

The purpose of this thesis is to study campanulariid life cycle evolution and systematics. The Campanulariidae is a hydrozoan family with many life cycle variations, and provide an excellent model system to study life cycle ...

Govindarajan, Annette Frese, 1970-

2004-01-01T23:59:59.000Z

302

Physics 116A Winter 2011 The Alternating Series Test  

E-Print Network [OSTI]

Physics 116A Winter 2011 The Alternating Series Test An alternating series is defined to be a series of the form: S = n=0 (-1)n an , (1) where all the an > 0. The alternating series test is a set and/or property 2 do not hold, then the alternating series test is inconclusive. Note that property 1

California at Santa Cruz, University of

303

Physics 116A Winter 2011 The Alternating Series Test  

E-Print Network [OSTI]

Physics 116A Winter 2011 The Alternating Series Test An alternating series is defined to be a series of the form: S = # # n=0 (-1) n a n , (1) where all the a n > 0. The alternating series test but property 1 and/or property 2 do not hold, then the alternating series test is inconclusive. Note

California at Santa Cruz, University of

304

A new expected upper limit on the rare decay B(s) ---> mu+ mu- with the D0 experiment  

SciTech Connect (OSTI)

We present a new expected upper limit of the rare decay branching ratio B{sub s} {yields} {mu}{sup +}{mu}{sup -} using about 5 fb{sup -1} of Run II data collected with the D0 detector at the Tevatron. When setting limits on the branching ratio, selected events are normalized to reconstructed B{sup {+-}} {yields} J/{Psi}K{sup {+-}} events in order to decrease the systematic uncertainty. The resulting expected upper limit is {Beta}(B{sub s} {yields} {mu}{sup +}{mu}{sup -}) = 4.3(5.3) x 10{sup -8} at the 90% (95%) C.L.

Ripp-Baudot, Isabelle; /Strasbourg, IPHC

2009-01-01T23:59:59.000Z

305

Quantum theory of dissipation of a harmonic oscillator coupled to a nonequilibrium bath; Wigner-Weisskopf decay and physical spectra  

E-Print Network [OSTI]

We extend the quantum theory of dissipation in the context of system-reservoir model, where the reservoir in question is kept in a nonequilibrium condition. Based on a systematic separation of time scales involved in the dynamics, appropriate generalizations of the fluctuation-dissipation and Einstein's relations have been pointed out. We show that the Wigner-Weisskopf decay of the system mode results in a rate constant which depending on the relaxation of nonequilibrium bath is dynamically modified. We also calculate the time-dependent spectra of a cavity mode with a suitable gain when the cavity is kept in contact with a nonequilibrium bath.

Jyotipratim Ray Chaudhuri; Bimalendu Deb; Gautam Gangopadhyay Deb Shankar Ray

1999-02-15T23:59:59.000Z

306

Precise Branching Ratio Measurements of the Decays D0-->pi- pi+ pi0 and D0-->K- K+ pi0  

E-Print Network [OSTI]

Using 232 fb-1 of e+e- collision data recorded by the BaBar experiment, we measure the ratios of three-body Cabibbo-suppressed decay rates of the D^0 meson relative to that of the Cabibbo-favored decay: B(D0 --> pi- pi+ pi0)/ B(D0 --> K- pi+ pi0) = (10.59 +/- 0.06 +/- 0.13).10^{-2} and B(D0 --> K- K+ pi0)/ B(D0 --> K- pi+ pi0) = (2.37 +/- 0.03 +/- 0.04). 10^{-2}, where the errors are statistical and systematic respectively. The precisions of these measurements are significantly better than those of the current world average values.We note that the second result differs significantly from the current world average value. Using the PDG-2006 value for D0 --> K- pi+ pi0 branching fraction, we obtain, B(D0 --> pi- pi+ pi0) = (1.493 +/- 0.008 +/- 0.018 +/- 0.053). 10^{-2}, B(D0 --> K- K+ pi0) = (0.334 +/- 0.004 +/- 0.006 +/- 0.012). 10^{-2}, where the errors are statistical, systematic, and due to the uncertainty of B(D0 --> K- pi+ pi0). The average squared matrix elements for both of the singly Cabibbo-suppressed decays are roughly a factor of sin^2 \\theta_C smaller than that for the Cabibbo-favored decay and are therefore, in contrast to the corresponding two-body modes, consistent with the naive expectations.

The BABAR Collaboration; B. Aubert

2006-08-03T23:59:59.000Z

307

SciTech Connect: Radioactive decay data tables  

Office of Scientific and Technical Information (OSTI)

Radioactive decay data tables Citation Details In-Document Search Title: Radioactive decay data tables You are accessing a document from the Department of Energy's (DOE) SciTech...

308

A Search for Neutrinoless Double Beta Decay of Te-130  

E-Print Network [OSTI]

Decay of Te by Adam Douglas Bryant A dissertation submitted2010 by Adam Douglas Bryant Te Abstract A Search forDecay of Te by Adam Douglas Bryant Doctor of Philosophy in

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

309

Leptonic $D_s$ decays at $B$-factories  

E-Print Network [OSTI]

We review recent measurements of leptonic $D_s$-meson decays performed by Belle and BaBar collaborations. Described measurements enable experimental extraction of the $D_s$-meson decay constant which can be compared with lattice QCD calculations.

A. Zupanc

2013-01-30T23:59:59.000Z

310

Sensitivity of CUORE to Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

Sensitivity of CUORE to Neutrinoless Double-Beta Decay b c,:Results of the Search for Neutrinoless D o u b l e - B e t ah e i n a , Evidence for neutrinoless double beta decay, M o

Alessandria, F.

2013-01-01T23:59:59.000Z

311

A Search for Neutrinoless Double Beta Decay of Te-130  

E-Print Network [OSTI]

Bolometric experiments for neutrinoless double beta 3.2.1A Search for Neutrinoless Double Beta Decay of Te by AdamSpring 2010 A Search for Neutrinoless Double Beta Decay of

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

312

Demolishing Decay at the Hanford Site | Department of Energy  

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

Demolishing Decay at the Hanford Site Demolishing Decay at the Hanford Site February 22, 2011 - 5:44pm Addthis The stacks and support structures of the 284 West Power House at the...

313

Comparing radiative and recoil corrections in neutron beta-decay and inverse beta-decay  

E-Print Network [OSTI]

The inverse $\\beta$-decay reaction, anti-nu_e + p --> e^+ + n, for low-energy anti-neutrinos coming from nuclear reactors is of great current interest in connection with high-precision measurements of the neutrino mixing angle $\\theta_{13}$. We have previously derived analytic expressions, up to next-to-leading order in heavy-baryon chiral perturbation theory, for the radiative corrections (RCs) and the nucleon-recoil corrections both for this reaction and for the related neutron $\\beta$-decay process. We investigate here the numerical consequences of these analytic expressions. We show that the recoil corrections are small for neutron $\\beta$-decay, but for inverse $\\beta$-decay, the recoil corrections are comparable in size to the RCs for typical energies of reactor anti-neutrinos, and they have opposite signs. It turns out that the RCs and the recoil corrections exhibit very different dependences on the neutrino energy.

U. Raha; F. Myhrer; K. Kubodera

2014-05-06T23:59:59.000Z

314

Systematic errors in current quantum state tomography tools  

E-Print Network [OSTI]

Common tools for obtaining physical density matrices in experimental quantum state tomography are shown here to cause systematic errors. For example, using maximum likelihood or least squares optimization for state reconstruction, we observe a systematic underestimation of the fidelity and an overestimation of entanglement. A solution for this problem can be achieved by a linear evaluation of the data yielding reliable and computational simple bounds including error bars.

Christian Schwemmer; Lukas Knips; Daniel Richart; Tobias Moroder; Matthias Kleinmann; Otfried Gühne; Harald Weinfurter

2014-07-22T23:59:59.000Z

315

Hybrid meson decay from lattice QCD  

E-Print Network [OSTI]

Besides the conventional hadrons containing valence quarks and valence antiquarks, quantum chromodynamics (QCD) suggests the existence of the hybrid hadrons containing valence gluons in addition to the quarks and antiquarks, and some experiments may have found some. A decisive experimental confirmation of its existence, however, is still needed. At present, lattice simulations have offered the practicable ways of theoretically guiding us to search for the hybrid states. In this dissertation, we study the spectroscopy and the decay rate of the heavy hybrid mesons made of a heavy $b$ quark, a heavy $\\bar b$ antiquark, and a gluon ($b\\bar{b}g$) to selected channels, and use lattice methods to extract the transition matrix elements in full QCD. We are particular interested in the spin-exotic hybrid mesons. For sufficiently heavy quarks (e.g., $b$ quark), we use the leading Born-Oppenheimer (LBO) approximation to calculate the static potential energy at all $b\\bar{b}$ separations. Then, by solving the Schr\\"odinger equation with this potential, we reconstruct the motion of the heavy quarks. In a similar way we can determine decay rates. In this dissertation, we use the numerical lattice method to calculate the mass of the $f_0$ meson at a single lattice spacing and light quark mass, namely, $m_{f_0} = (768 \\pm 136)$ MeV. Most of all we consider the decay channels involving the production of a scalar meson. We obtain the partial decay rate ($\\Gamma$) for the channel $ H \\rightarrow \\chi_b + \\pi + \\pi $, namely, $ \\Gamma = 3.62(98)$ MeV. All of our results are consistent with those of other researchers. Knowledge of the masses and the decay rates should help us considerably in experimental searches for the hybrid mesons.

Ziwen Fu

2011-03-08T23:59:59.000Z

316

Neutrinoless Double Beta Decay and Physics Beyond the Standard Model  

E-Print Network [OSTI]

Neutrinoless double beta decay is the most powerful tool to probe not only for Majorana neutrino masses but for lepton number violating physics in general. We discuss relations between lepton number violation, double beta decay and neutrino mass, review a general Lorentz invariant parametrization of the double beta decay rate, highlight a number of different new physics models showing how different mechanisms can trigger double beta decay, and finally discuss possibilities to discriminate and test these models and mechanisms in complementary experiments.

Frank F. Deppisch; Martin Hirsch; Heinrich Päs

2012-08-03T23:59:59.000Z

317

/ Search for Neutrinoless Double Beta Decay with CUORE  

E-Print Network [OSTI]

neutrinoless double beta decay (??0?) in 130 Te and other rare processes. The observation of ??0? would

Elena Ferri

318

Search for neutrinoless decays of the tau lepton  

E-Print Network [OSTI]

. The upper limits obtained for 22 decay branching fractions are several times more stringent than those set previously....

Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Lam, H.

1994-10-01T23:59:59.000Z

319

The Neutrinoless Double Beta Decay: The Case for Germanium Detectors  

E-Print Network [OSTI]

An overview of the current status of Neutrinoless Double Beta Decay is presented, emphasizing on the case of Germanium Detectors.

A. Morales; J. Morales

2002-11-21T23:59:59.000Z

320

Search for neutrinoless double beta decay with NEMO 3 experiment  

E-Print Network [OSTI]

NEMO 3 experiment is designed to search for neutrinoless double beta decay. It is located in the Modane Underground Laboratory (LSM) and has been taking data since February 2003. The half- lives of two neutrino beta decay have been measured for seven isotopes. No evidence of neutrinoless double beta decay has been found. The limits on both the half-lives of the neutrinoless double beta decay and the corresponding Majorana effective masses are derived

Zornitza Daraktchieva

2009-01-18T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Threshold resummed spectra in semi-inclusive B decays  

E-Print Network [OSTI]

I discuss some aspects of the universality of soft gluon dynamics in semileptonic and radiative decays at the threshold region.

Giulia Ricciardi

2006-07-05T23:59:59.000Z

322

DECAY CONSTANTS OF CHARGED PSEUDO-SCALAR MESONS  

E-Print Network [OSTI]

- and D+ s decays, the existence of a charged Higgs boson (or any other charged object beyond the Standard

323

Hadronic B_u and B_d decays  

E-Print Network [OSTI]

I present latest measurements from the B factories of branching fractions for B meson decays to hadronic two- and three-body final states. These include the rate of doubly Cabibbo-suppressed charge states of charmed mesons in two-body decays, charmed baryons and other structure seen in baryonic B decays, and charmless mesonic two-body decays in comparison with estimates from theory.

W. T. Ford

2008-10-02T23:59:59.000Z

324

Search for Invisibly Decaying Higgs Bosons with Large Decay Width Using the OPAL Detector at LEP  

E-Print Network [OSTI]

This paper describes a topological search for an invisibly decaying Higgs boson,H, produced via the Bjorken process (e+e- -> HZ). The analysis is based on data recorded using the OPAL detector at LEP at centre-of-mass energies from 183 to 209 GeV corresponding to a total integrated luminosity of 629pb-1. In the analysis only hadronic decays of the Z boson are considered. A scan over Higgs boson masses from 1 to 120 GeV and decay widths from 1 to 3000 GeV revealed no indication for a signal in the data. From a likelihood ratio of expected signal and Standard Model background we determine upper limits on cross-section times branching ratio to an invisible final state. For moderate Higgs boson decay widths, these range from about 0.07pb Mh = 60GeV) to 0.57pb (Mh = 114GeV). For decay widths above 200GeV the upper limits are of the order of 0.15pb. The results can be interpreted in general scenarios predicting a large invisible decay width of the Higgs boson. As an example we interpret the results in the so-called...

Abbiendi, G; Ĺkesson, P F; Alexander, G; Anagnostou, G; Anderson, K J; Asai, S; Axen, D; Bailey, I; Barberio, E; Barillari, T; Barlow, R J; Batley, J Richard; Bechtle, P; Behnke, T; Bell, K W; Bell, P J; Bella, G; Bellerive, A; Benelli, G; Bethke, Siegfried; Biebel, O; Boeriu, O; Bock, P; Boutemeur, M; Braibant, S; Brown, R M; Burckhart, H J; Campana, S; Capiluppi, P; Carnegie, R K; Carter, A A; Carter, J R; Chang, C Y; Charlton, D G; Ciocca, C; Csilling, A; Cuani, M; Dado, S; de Roeck, A; De Wolf, E A; Desch, K; Dienes, B; Dubbert, J; Duchovni, E; Duckeck, G; Duerdoth, I P; Etzion, E; Fabbri, F; Ferrari, P; Fiedler, F; Fleck, I; Ford, M; Frey, A; Gagnon, P; Gary, J W; Geich-Gimbel, C; Giacomelli, G; Giacomelli, P; Giunta, M; Goldberg, J; Gross, E; Grunhaus, J; Gruwé, M; Sen-Gupta, A; Hajdu, C; Hamann, M; Hanson, G G; Harel, A; Hauschild, M; Hawkes, C M; Hawkings, R; Herten, G; Heuer, R D; Hill, J C; Horváth, D; Igo-Kemenes, P; Ishii, K; Jeremie, H; Jovanovic, P; Junk, T R; Kanzaki, J; Karlen, D; Kawagoe, K; Kawamoto, T; Keeler, R K; Kellogg, R G; Kennedy, B W; Kluth, S; Kobayashi, T; Kobel, M; Komamiya, S; Kramer, T; Krasznahorkay, A; Krieger, P; Von Krogh, J; Kühl, T; Kupper, M; Laerty, G D; Landsman, H; Lanske, D; Lellouch, D; Letts, J; Levinson, L; Lillich, J; Lloyd, S L; Loebinger, F K; Lü, J; Ludwig, A; Ludwig, J; Mader, W; Marcellini, S; Martin, A J; Mashimo, T; Mättig, P; McKenna, J; McPherson, R A; Meijers, F; Menges, W; Merritt, F S; Mes, H; Meyer, N; Michelini, A; Mihara, S; Mikenberg, G; Miller, D J; Mohr, W; Mori, T; Mutter, A; Nagai, K; Nakamura, I; Nanjo, H; Neal, H A; Nisius, R; O'Neale, S W; Oh, A; Oreglia, M J; Orito, S; Pahl, C; Pásztor, G; Pater, J R; Pilcher, J E; Pinfold, J L; Plane, D E; Pooth, O; Przybycien, M B; Quadt, A; Rabbertz, K; Rembser, C; Renkel, P; Roney, J M; Rossi, A M; Rozen, Y; Runge, K; Sachs, K; Saeki, T; Sarkisyan-Grinbaum, E; Schaile, A D; Schaile, O; Schar-Hansen, P; Schieck, J; Schörner-Sadenius, T; Schröder, M; Schumacher, M; Seuster, R; Shears, T G; Shen, B C; Sherwood, P; Skuja, A; Smith, A M; Sobie, R J; Söldner-Rembold, S; Spanó, F; Stahl, A; Strom, D; Ströhmer, R; Tarem, S; Tasevsky, M; Teuscher, R; Thomson, M A; Torrence, E; Toya, D; Tran, P; Trigger, I; Trócsányi, Z L; Tsur, E; Turner-Watson, M F; Ueda, I; Ujvári, B; Vollmer, C F; Vannerem, P; Vertesi, R; Verzocchi, M; Voss, H; Vossebeld, Joost Herman; Ward, C P; Ward, D R; Watkins, P M; Watson, A T; Watson, N K; Wells, P S; Wengler, T; Wermes, N; Wilson, G W; Wilson, J A; Wolf, G; Wyatt, T R; Yamashita, S; Zer-Zion, D; Zivkovic, L

2007-01-01T23:59:59.000Z

325

Double Beta Decay Experiments Department of Physics and Astronomy  

E-Print Network [OSTI]

1 Double Beta Decay Experiments A. Piepkea a Department of Physics and Astronomy University. The experimen- tal investigation of the nuclear double beta decay is one of the key techniques for solving, such as the evaluation of the beta spec- tra near their endpoint, or neutrinoless double beta decay. The latter technique

Piepke, Andreas G.

326

Measurement of CP Violation in B[0 over s] ? ?? decays  

E-Print Network [OSTI]

A measurement of the decay time-dependent CP-violating asymmetry in B[0 over s] ? ?? decays is presented, along with measurements of the T-odd triple-product asymmetries. In this decay channel, the CP-violating weak phase ...

Counts, Ian Thomas Hunt

327

Imperfect World of $\\beta\\beta$-decay Nuclear Data Sets  

E-Print Network [OSTI]

The precision of double-beta ($\\beta\\beta$) decay experimental half lives and their uncertainties is reanalyzed. The method of Benford's distributions has been applied to nuclear reaction, structure and decay data sets. First-digit distribution trend for $\\beta\\beta$-decay T$_{1/2}^{2\

Pritychenko, B

2015-01-01T23:59:59.000Z

328

Sensitivity of CUORE to Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

of CUORE to Neutrinoless Double-Beta Decay b c,:L d e f F .s t results on neutrinoless double beta decay of T e w i t hthe study of neutrinoless double beta decay, J . C r y s t .

Alessandria, F.

2013-01-01T23:59:59.000Z

329

The Majorana Neutrinoless Double-Beta Decay Experiment  

E-Print Network [OSTI]

The Majorana Neutrinoless Double-Beta Decay Experiment Pre-conceptual Design Proposal November 22 Motivation for Neutrinoless Double-Beta Decay Experiments . . . . . . . . . 4 2.1.1 Community Guidance Neutrinoless Double-Beta Decay Results . . . . . . . . . . . . . . . . . . . . 12 2.5 Next

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

330

National Adaptation Forum Webinar Series: Out of Town, Not Out...  

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

Adaptation Forum Webinar Series: Out of Town, Not Out of Trouble: Small Agriculture and Indigenous Communities National Adaptation Forum Webinar Series: Out of Town, Not Out of...

331

Tribal Renewable Energy Webinar Series | Department of Energy  

Office of Environmental Management (EM)

Resources Education and Training Tribal Renewable Energy Webinar Series Tribal Renewable Energy Webinar Series The DOE Office of Indian Energy Policy and Programs, in...

332

3800 Green Series Cost Elements | Department of Energy  

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

(formerly EPP) Program 3800 Green Series Cost Elements 06112014 (Rev. 7) 3800 Green Series Cost Elements More Documents & Publications 1 OPAM Policy Acquisition Guides...

333

Building America Best Practices Series: Volume 12. EnergyRenovations...  

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

Building America Best Practices Series: Volume 12. Energy Renovations-Insulation: A Guide for Contractors to Share With Homeowners Building America Best Practices Series: Volume...

334

Chassis Dynamometer Testing of Parallel and Series Diesel Hybrid...  

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

Chassis Dynamometer Testing of Parallel and Series Diesel Hybrid Buses Chassis Dynamometer Testing of Parallel and Series Diesel Hybrid Buses Emissions and fuel economy data were...

335

National High Magnetic Field Laboratory - Series Connected Hybrid...  

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

Spallation Neutron Source Series Connected Hybrid Figure 3. Vertical Section of the Series Connected Hybrid Magnet and Cryostat for the SNS. The SCH for the Spallation Neutron...

336

Focus Series: Maine-Residential Direct Install Program | Department...  

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

Maine-Residential Direct Install Program Focus Series: Maine-Residential Direct Install Program Better Buildings Neighborhood Program Focus Series: MAINE-Residential Direct Install...

337

The Isospin Model prediction for multi-pion tau decays  

E-Print Network [OSTI]

The predictions of an isospin model are compared with the branching ratios of the 5 and 6 pion decays of the tau lepton. In both cases, the isospin model suggests that the tau favours decays in which there is an omega resonance. Recent measurements of such tau decays confirm this hypothesis. If the decay of the tau to 7 pions also proceeds through an intermediate omega, then the isospin model predicts that the branching ratio of the tau to seven charged pions should be small when compared with other 7 pion decays. New limits on this mode appear to support this argument.

Randall J. Sobie

1998-10-19T23:59:59.000Z

338

The nuclear matrix elements for neutrinoless double beta decay  

SciTech Connect (OSTI)

The status of calculation of the neutrinoless double beta decay (0{nu}{beta}{beta}-decay) nuclear matrix elements (NME's) is reviewed. The spread of published values of NME's is discussed. The main attention is paid to the recent progress achieved in the evaluation of the 0{nu}{beta}{beta}-decay NME's in the framework of the quasiparticle random phase approximation (QRPA). The obtained results are compared with those of the nuclear shell model. The problem of reliable determination of the 0{nu}{beta}{beta}-decay NME's is addressed. The uncertainty in NME's are analyzed and further progress in calculation of the 0{nu}{beta}{beta}-decay NME's is outlined.

Simkovic, Fedor [Department of Nuclear Physics and Biophysics, Comenius University, Mlynska dolina, SK-84248 Bratislava (Slovakia)

2007-10-12T23:59:59.000Z

339

Nuclear matrix elements in neutrinoless double beta decay: beyond mean-field covariant density functional theory  

E-Print Network [OSTI]

We report a systematic study of nuclear matrix elements (NMEs) in neutrinoless double-beta decays with state-of-the-art beyond mean-field covariant density functional theory. The dynamic effects of particle-number and angular-momentum conservations as well as quadrupole shape fluctuations are taken into account with projections and generator coordinate method for both initial and final nuclei. The full relativistic transition operator is adopted to calculate the NMEs which are found to be consistent with the results of previous beyond non-relativistic mean-field calculation based on a Gogny force with the exception of $^{150}$Nd. Our study shows that the total NMEs can be well approximated by the pure axial-vector coupling term, the calculation of which is computationally much cheaper than that of full terms.

J. M. Yao; L. S. Song; K. Hagino; P. Ring; J. Meng

2014-10-23T23:59:59.000Z

340

Nuclear matrix elements in neutrinoless double beta decay: beyond mean-field covariant density functional theory  

E-Print Network [OSTI]

We report a systematic study of nuclear matrix elements (NMEs) in neutrinoless double-beta decays with state-of-the-art beyond mean-field covariant density functional theory. The dynamic effects of particle-number and angular-momentum conservations as well as quadrupole shape fluctuations are taken into account with projections and generator coordinate method for both initial and final nuclei. The full relativistic transition operator is adopted to calculate the NMEs which are found to be consistent with the results of previous beyond non-relativistic mean-field calculation based on a Gogny force with the exception of $^{150}$Nd. Our study shows that the total NMEs can be well approximated by the pure axial-vector coupling term, the calculation of which is computationally much cheaper than that of full terms.

Yao, J M; Hagino, K; Ring, P; Meng, J

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Evidence for {psi}' Decays into {gamma}{pi}{sup 0} and {gamma}{eta}  

SciTech Connect (OSTI)

The decays {psi}{sup '}{yields}{gamma}{pi}{sup 0}, {gamma}{eta} and {gamma}{eta}{sup '} are studied using data collected with the BESIII detector at the BEPCII e{sup +}e{sup -} collider. The processes {psi}{sup '}{yields}{gamma}{pi}{sup 0} and {psi}{sup '}{yields}{gamma}{eta} are observed for the first time with signal significances of 4.6{sigma} and 4.3{sigma}, respectively. The branching fractions are determined to be B({psi}{sup '}{yields}{gamma}{pi}{sup 0})=(1.58{+-}0.40{+-}0.13)x10{sup -6}, B({psi}{sup '}{yields}{gamma}{eta})=(1.38{+-}0.48{+-}0.09)x10{sup -6}, and B({psi}{sup '}{yields}{gamma}{eta}{sup '})=(126{+-}3{+-}8)x10{sup -6}, where the first errors are statistical and the second ones systematic.

Ablikim, M.; An, Z. H.; Bai, J. Z.; Berger, N.; Bian, J. M.; Cai, X.; Cao, G. F.; Cao, X. X.; Chang, J. F.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, Y.; Chen, Y. B.; Chu, Y. P.; Dai, H. L.; Dai, J. P.; Deng, Z. Y.; Dong, L. Y. [Institute of High Energy Physics, Beijing 100049 (China)

2010-12-31T23:59:59.000Z

342

Importance of neutrinoless double beta decay  

E-Print Network [OSTI]

A natural explanation for the smallness of the neutrino mass requires them to be Majorana particles violating lepton number by two units. Since lepton number violation can have several interesting consequences in particle physics and cosmology, it is of utmost importance to find out if there is lepton number violation in nature and what is its magnitude. The neutrinoless double beta decay experiment can answer these questions: if there is lepton number violation and if neutrinos are Majorana particles. In addition, the magnitude of neutrinoless double beta decay will constrain any other lepton number violating processes. This lepton number violation may also be relatd to the matter-antimatter asymmetry of the universe, dark matter and cosmological constant.

Utpal Sarkar

2007-12-17T23:59:59.000Z

343

Searches for very rare decays of kaons  

SciTech Connect (OSTI)

The physics motivation for searches for very rare kaon decays, either forbidden or suppressed within the Standard Model, is briefly discussed. Simple arguments conclude that such searches probe possible new forces at a 200 TeV mass scale or constitute a precision test of the electroweak model. The examples of such process are decays of K{sub L}{sup 0} {yields} {mu} {sup {+-}}e{sup -+}, K{sup +} {yields} {pi}{sup +} {mu}{sup +} e{sup -}, K{sub L}{sup 0} {yields} {mu}{sup +} {mu}{sup -}, and K{sup +} {yields} {pi} {yields} {pi}{sup +}{nu}{bar {nu}}. We present the current experimental status and describe the new efforts to reach sensitivities down to one part in 10{sup 12}. The discussion is focused on the experimental program at the Alternating Gradient Synchrotron at Brookhaven National Laboratory, where intense beams make such studies possible.

Lang, K. [Univ. of Texas, Austin, TX (United States)

1997-01-01T23:59:59.000Z

344

Neutrinoless Double Beta Decay and its "Inverse"  

E-Print Network [OSTI]

Recent considerations by these authors pointed out the attractive features which a search for the exchange of heavy Majorana neutrinos could have for solving the mass and the lepton number puzzles for all neutrinos, in TeV-level electron-electron scattering. In the present note, we show that, contrary to subsequently published arguments, non-observation of neutrinoless double beta decay has, to date, no bearing on the promise of this important task for future linear electron colliders.

Clemens A. Heusch; Peter Minkowski

1996-11-18T23:59:59.000Z

345

Neutrinoless Double Beta Decay in Particle Physics  

E-Print Network [OSTI]

Neutrinoless double beta decay is a process of fundamental importance for particle physics. It can be mediated by light massive Majorana neutrinos (standard interpretation) or by something else (non-standard interpretations). We review its dependence on the neutrino parameters, its complementarity to other observables sensitive to neutrino mass, and emphasize its ability to distinguish different neutrino mass models. Then we discuss mechanisms different from light Majorana neutrino exchange, and show what can be learned from those and how they could be tested.

Werner Rodejohann

2010-11-22T23:59:59.000Z

346

Electroweak Corrections to the Top Quark Decay  

E-Print Network [OSTI]

We have calculated the one-loop electroweak corrections to the decay t-> bW+, including the counterterm for the CKM matrix elements V(tb). Previous calculations used an incorrect delta V(tb) that led to a gauge dependent amplitude. However, since the contribution stemming from delta V(tb) is small, those calculations only underestimate the width by roughly one part in 10^5.

S. M. Oliveira; L. Bruecher; R. Santos; A. Barroso

2001-01-18T23:59:59.000Z

347

Analysis of exponential decay curves of mixtures  

E-Print Network [OSTI]

. Tommy Cobb who kept me on the straight and narrow during those first few trying weeks, and to Richard "Hoot" Gibson for his help with LP/90. TABLE OF CONTENTS Acknowledgments List of Tables CHAPTER Page lil Introduction III IV Linear... thesis written by Lt, Col. Tommy Cobb at Texas A&M University in the spring of 1966. When most substances are irradiated, radioactive isotopes are created which give off radioactive emissions according to the exponen- tial decay formula. The half...

McGaughey, Robert Lee

1967-01-01T23:59:59.000Z

348

Can biomass time series be reliably assessed from CPUE time series data Francis Lalo1  

E-Print Network [OSTI]

1 Can biomass time series be reliably assessed from CPUE time series data only? Francis Laloë1 to abundance. This means (i) that catchability is constant and (ii) that all the biomass is catchable. If so, relative variations in CPUE indicate the same relative variations in biomass. Myers and Worm consider

Hawai'i at Manoa, University of

349

User's Guide Agilent Technologies 8560 E-Series and EC-Series  

E-Print Network [OSTI]

User's Guide Agilent Technologies 8560 E-Series and EC-Series Spectrum Analyzers Manufacturing Part. Refer servicing to qualified personnel. To prevent electrical shock do not remove covers. WARNING Before power cable to a socket outlet provided with protective earth contact. WARNING There are many points

Ravikumar, B.

350

Alternative Fuels Data Center: P-Series  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone by E-mail Share Alternative Fuels Data Center: P-Series on

351

Series connected OLED structure and fabrication method  

DOE Patents [OSTI]

A light emitting device comprises a plurality of organic light emitting diode (OLED) modules. The OLED modules are arranged into a series group where the individual OLED modules are electrically connected in series. The device is configured to be coupled to a power supply. A display is also provided. The display includes a plurality of OLED modules arranged to depict a shape selected from the group consisting of at least one letter, at least one number, at least one image, and a combination thereof.

Foust, Donald Franklin; Balch, Ernest Wayne; Duggal, Anil Raj; Heller, Christian Maria; Guida, Renato; Nealon, William Francis; Faircloth, Tami Janene

2006-05-23T23:59:59.000Z

352

Universal decay rule for reduced widths  

SciTech Connect (OSTI)

Emission processes including {alpha} decay, heavy cluster decay, and proton and di-proton emission are analyzed in terms of the well-known factorization between the penetrability and the reduced width. By using a shifted harmonic oscillator plus Coulomb cluster-daughter interaction it is possible to derive a linear relation between the logarithm of the reduced width squared and the fragmentation potential, defined as the difference between the Coulomb barrier and the Q value. This relation is fulfilled with a good accuracy for transitions between ground states, as well as for most {alpha} decays to low-lying 2{sup +} excited states. The well-known Viola-Seaborg rule, connecting half-lives with the Coulomb parameter and the product between fragment charge numbers, as well as the Blendowske scaling rule, connecting the spectroscopic factor with the mass number of the emitted cluster, can be easily understood in terms of the fragmentation potential. It is shown that the recently evidenced two regions in the dependence of reduced proton half-lives versus the Coulomb parameter are directly connected with the corresponding regions of the fragmentation potential.

Delion, D. S. [Horia Hulubei National Institute of Physics and Nuclear Engineering, 407 Atomistilor, Bucharest-Magurele 077125 (Romania) and Academy of Romanian Scientists, 54 Splaiul Independentei, Bucharest 050094 (Romania)

2009-08-15T23:59:59.000Z

353

Double beta decays of {sup 106}Cd  

SciTech Connect (OSTI)

The two-neutrino (2{nu}2{beta}) and neutrinoless (0{nu}2{beta}) double beta decays of {sup 106}Cd are studied for the transitions to the ground state 0{sub gs}{sup +} and 0{sup +} and 2{sup +} excited states in {sup 106}Pd by using realistic many-body wave functions calculated in the framework of the quasiparticle random-phase approximation. Effective, G-matrix-derived nuclear forces are used in realistic single-particle model spaces. All the possible channels, {beta}{sup +}{beta}{sup +}, {beta}{sup +}EC, and ECEC, are discussed for both the 2{nu}2{beta} and 0{nu}2{beta} decays. The associated half-lives are computed and particular attention is devoted to the study of the detectability of the resonant neutrinoless double electron capture (R0{nu}ECEC) process in {sup 106}Cd. The calculations of the present article constitute the thus far most complete and up-to-date investigation of the double-beta-decay properties of {sup 106}Cd.

Suhonen, Jouni [Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyvaeskylae (Finland)

2011-12-16T23:59:59.000Z

354

A background free double beta decay experiment  

E-Print Network [OSTI]

We present a new detection scheme for rejecting backgrounds in neutrino less double beta decay experiments. It relies on the detection of Cherenkov light emitted by electrons in the MeV region. The momentum threshold is tuned to reach a good discrimination between background and good events. We consider many detector concepts and a range of target materials. The most promising is a high-pressure 136Xe emitter for which the required energy threshold is easily adjusted. Combination of this concept and a high pressure Time Projection Chamber could provide an optimal solution. A simple and low cost effective solution is to use the Spherical Proportional Counter that provides two delayed signals from ionization and Cherenkov light. In solid-state double beta decay emitters, because of their higher density, the considered process is out of energy range. An alternative solution could be the development of double decay emitters with lower density by using for instance the aerogel technique. It is surprising that a technology used for particle identification in high-energy physics becomes a powerful tool for rejecting backgrounds in such low-energy experiments.

Ioannis Giomataris

2010-12-20T23:59:59.000Z

355

A background free double beta decay experiment  

E-Print Network [OSTI]

We present a new detection scheme for rejecting backgrounds in neutrino less double beta decay experiments. It relies on the detection of Cherenkov light emitted by electrons in the MeV region. The momentum threshold is tuned to reach a good discrimination between background and good events. We consider many detector concepts and a range of target materials. The most promising is a high-pressure 136Xe emitter for which the required energy threshold is easily adjusted. Combination of this concept and a high pressure Time Projection Chamber could provide an optimal solution. A simple and low cost effective solution is to use the Spherical Proportional Counter that provides two delayed signals from ionization and Cherenkov light. In solid-state double beta decay emitters, because of their higher density, the considered process is out of energy range. An alternative solution could be the development of double decay emitters with lower density by using for instance the aerogel technique. It is surprising that a te...

Giomataris, Ioannis

2010-01-01T23:59:59.000Z

356

Age-dependent decay in the landscape  

E-Print Network [OSTI]

The picture of the "multiverse" arising in diverse cosmological scenarios involves transitions between metastable vacuum states. It was pointed out by Krauss and Dent that the transition rates decrease at very late times, leading to a dependence of the transition probability between vacua on the age of each vacuum region. I investigate the implications of this non-Markovian, age-dependent decay on the global structure of the spacetime in landscape scenarios. I show that the fractal dimension of the eternally inflating domain is precisely equal to 3, instead of being slightly below 3 in scenarios with purely Markovian, age-independent decay. I develop a complete description of a non-Markovian landscape in terms of a nonlocal master equation. Using this description I demonstrate by an explicit calculation that, under some technical assumptions about the landscape, the probabilistic predictions of our position in the landscape are essentially unchanged, regardless of the measure used to extract these predictions. I briefly discuss the physical plausibility of realizing non-Markovian vacuum decay in cosmology in view of the possible decoherence of the metastable quantum state.

Sergei Winitzki

2007-12-14T23:59:59.000Z

357

Delayed Nickel Decay in Gamma Ray Bursts  

E-Print Network [OSTI]

Recently observed emission lines in the X-ray afterglow of gamma ray bursts suggest that iron group elements are either produced in the gamma ray burst, or are present nearby. If this material is the product of a thermonuclear burn, then such material would be expected to be rich in Nickel-56. If the nickel remains partially ionized, this prevents the electron capture reaction normally associated with the decay of Nickel-56, dramatically increasing the decay timescale. Here we examine the consequences of rapid ejection of a fraction of a solar mass of iron group material from the center of a collapsar/hypernova. The exact rate of decay then depends on the details of the ionization and therefore the ejection process. Future observations of iron, nickel and cobalt lines can be used to diagnose the origin of these elements and to better understand the astrophysical site of gamma ray bursts. In this model, the X-ray lines of these iron-group elements could be detected in suspected hypernovae that did not produce an observable gamma ray burst due to beaming.

G. C. McLaughlin; R. A. M. J. Wijers

2002-05-19T23:59:59.000Z

358

Systematics of 2{sub 1}{sup +} states in semimagic nuclei  

SciTech Connect (OSTI)

We propose a simple systematics of low-lying 2{sub 1}{sup +} energy levels and electromagnetic transitions in semimagic isotopic chains Z=28,50,82 and isotonic chains N=28,50,82,126. To this purpose we use a two-level pairing plus quadrupole Hamiltonian, within the spherical quasiparticle random phase approximation (QRPA). We derive a simple relation connecting the 2{sub 1}{sup +} energy with the pairing gap and quadrupole-quadupole (QQ) interaction strength. It turns out that the systematics of energy levels and B(E2) values predicted by this simple model is fulfilled with a reasonable accuracy by all available experimental data. This systematics suggests that not only active nucleons but also those filling closed shells play an important role.

Delion, D. S. ['Horia Hulubei' National Institute of Physics and Nuclear Engineering, 407 Atomistilor, Bucharest-Magurele 077125 (Romania); Academy of Romanian Scientists, 54 Splaiul Independentei, Bucharest 050094 (Romania); Zamfir, N. V. ['Horia Hulubei' National Institute of Physics and Nuclear Engineering, 407 Atomistilor, Bucharest-Magurele 077125 (Romania)

2010-09-15T23:59:59.000Z

359

Solar Instructor Series A PROJECT BY  

E-Print Network [OSTI]

9. NEC ® 2011 Code Updates PV 10. Integra ng Solar into Exis ng Curricula 11. How to Land YourSolar Instructor Series A PROJECT BY: FUNDING PROVIDED BY: The NC Solar Center at NC State University is the Southern Mid Atlan c Provider of Solar Instructor Training (SMAPSIT) a Train

360

2014-2015Series College of Agriculture,  

E-Print Network [OSTI]

2014-2015Series College of Agriculture, Food and Environment University of Kentucky is accredited of University of Kentucky. Agricultural Economics The Agricultural Economics program enables graduates to pursue and production. Opportunities are also available in public policy for agriculture and rural America

MacAdam, Keith

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

2012-2013 Series College of Agriculture  

E-Print Network [OSTI]

2012-2013 Series College of Agriculture and School of Human Environmental Sciences University about the accreditation of University of Kentucky. AgriculturalEconomics The Agricultural Economics for agriculture and rural America and environmental economics. These career opportunities may be found in both

Hayes, Jane E.

362

Distinguished Lecturer Series Understanding Climate Change  

E-Print Network [OSTI]

Distinguished Lecturer Series Understanding Climate Change: Opportunities and Challenges for Data A Climate change is the defining environmental challenge facing our planet, yet there is considerable.Anew and transformative approach is required to understand the potential impact of climate change. Data driven approaches

California at Davis, University of

363

Integrated method for chaotic time series analysis  

DOE Patents [OSTI]

Methods and apparatus for automatically detecting differences between similar but different states in a nonlinear process monitor nonlinear data are disclosed. Steps include: acquiring the data; digitizing the data; obtaining nonlinear measures of the data via chaotic time series analysis; obtaining time serial trends in the nonlinear measures; and determining by comparison whether differences between similar but different states are indicated. 8 figs.

Hively, L.M.; Ng, E.G.

1998-09-29T23:59:59.000Z

364

ELKHORN SLOUGH TECHNICAL REPORT SERIES 2009: 1  

E-Print Network [OSTI]

Research Reserve and the Elkhorn Slough Foundation Synthesis for Management of Eutrophication Issues in Elkhorn Slough Brent Hughes April 2009 (Updated March 2010) #12;Eutrophication in Elkhorn Slough 2 B of eutrophication issues in Elkhorn Slough. Elkhorn Slough Technical Report Series 2009:1. AUTHOR AFFLIATION

California at Santa Cruz, University of

365

High Noon Lecture Series 2012 Fall Schedule  

E-Print Network [OSTI]

signed the Affordable Care Act into law. Some health insurance reforms have already taken place at how important arenas of constitutional law, from health care reform to abortion to affirmative actionHigh Noon Lecture Series 2012 Fall Schedule September 19 "Deciphering the Affordable Care Act" Glen

366

Denman Forestry Issues Series presents: "Seeking Sustainability"  

E-Print Network [OSTI]

and Introduction - Dr. B. Bruce Bare, Dean, College of Forest Resources 10:20 - 10:45 Sustainability in the FaceDenman Forestry Issues Series presents: "Seeking Sustainability" Monday, November 18, 2002, 10AM how to manage natural resources in a sustainable way. The question of sustainability is a complex one

Borenstein, Elhanan

367

Frontiers in Chemical Imaging Seminar Series  

E-Print Network [OSTI]

the positions of Professor in the Dept. of Materials Science and Engineering, University of TennesseeFrontiers in Chemical Imaging Seminar Series Presented by Dr. Stephen J Pennycook, Ph.D. Materials properties. Finally, the direct imaging and identification of point defect configurations in monolayer BN

368

Boston University Seminar Series on Climate Change  

E-Print Network [OSTI]

Boston University Seminar Series on Climate Change Free and open to the public Thursdays, September for Societal Change Matthew Nisbet, Associate Professor of Communication Studies, Public Policy and Urban National Assessments of Climate Change Tony Janetos, Professor of Earth and Environment and Director

Marchant, David R.

369

HEART SMART NUTRITION Lesson Series Evaluation  

E-Print Network [OSTI]

HEART SMART NUTRITION Lesson Series Evaluation Please check the appropriate column if you did any of these activities either before or after receiving and reading the HeartSmart Nutrition lessons. Lifestyle Practices/Activities BEFORE Reading Lessons AFTER Reading Lessons Read any heart disease and nutrition information or website

370

Time Series Models: Hidden Markov Models  

E-Print Network [OSTI]

Time Series Models: Hidden Markov Models & Linear Dynamical Systems Sam Roweis Gatsby Computational before. Discrete state: { Moore and Mealy machines (engineering) { stochastic #12;nite state automata (CS chain with stochastic measurements. Gauss-Markov process in a pancake. PSfrag replacements x 1 y 1 x 2 y

Roweis, Sam

371

Time Series Models: Hidden Markov Models  

E-Print Network [OSTI]

Time Series Models: Hidden Markov Models & Linear Dynamical Systems Sam Roweis Gatsby Computational. Discrete state: { Moore and Mealy machines (engineering) { stochastic #12;nite state automata (CS with stochastic measurements. Gauss-Markov process in a pancake. PSfrag replacements x 1 y 1 x 2 y 2 x 3 y 3 x T y

Roweis, Sam

372

NZER WORKING PAPER SERIES BOLIVIA'S ECONOMIC CRISIS  

E-Print Network [OSTI]

NZER WORKING PAPER SERIES BOLIVIA'S ECONOMIC CRISIS Juan Antonio Morales Jeffrey Sachs Working Paper No. 2620 NATIONAL BUREAU OF ECONOMIC RESEARCH 1050 Massachusetts Avenue Cambridge, MA 02138 of a monograph on "Bolivian Economic Performance and Foreign Debt", undertaken as part of the NBER project

373

Denman Forestry Issues Series presents: Spring 2009  

E-Print Network [OSTI]

Denman Forestry Issues Series presents: Spring 2009 Future of Forestry in the Pacific Northwest May, College of Forest Resources Session 1: The Future of Forestry in the Pacific Northwest "The Future of Forestry in the Pacific Northwest" Bruce Bare "Markets Happen: The value of diversifying markets" Ivan

Borenstein, Elhanan

374

Physics Meets Biology (LBNL Summer Lecture Series)  

ScienceCinema (OSTI)

Summer Lecture Series 2006: If scientists could take advantage of the awesomely complex and beautiful functioning of biologys natural molecular machines, their potential for application in many disciplines would be incalculable. Nobel Laureate and Director of the Lawrence Berkeley National Laboratory Steve Chu explores Possible solutions to global warming and its consequences.

Chu, Steve [Director, LBNL

2011-04-28T23:59:59.000Z

375

Integrated method for chaotic time series analysis  

DOE Patents [OSTI]

Methods and apparatus for automatically detecting differences between similar but different states in a nonlinear process monitor nonlinear data. Steps include: acquiring the data; digitizing the data; obtaining nonlinear measures of the data via chaotic time series analysis; obtaining time serial trends in the nonlinear measures; and determining by comparison whether differences between similar but different states are indicated.

Hively, Lee M. (Philadelphia, TN); Ng, Esmond G. (Concord, TN)

1998-01-01T23:59:59.000Z

376

UC Laboratory Safety Systemwide Webinar Series  

E-Print Network [OSTI]

Force Report on Improving the Culture of Laboratory Safety in Academic Institutions Speaker: Dr. RobertUC Laboratory Safety Systemwide Webinar Series Webinars are being developed and will be scheduled on the following topics, with all webinars to be recorded and posted on the UC Lab Safety SharePoint site. ACS Task

Tsien, Roger Y.

377

VPL-E Series Data Projectors  

E-Print Network [OSTI]

lter Eco-friendly,GoodTCO,and Easy Operation The VPL-E Series is an Excellent Choice for Education consumption, allowing users to make significant savings on their electricity expenses. Simple Projector in education or business. The values are approximate. VPL-EX120 Conventional Model 6000 hours Longer Lamp

Saskatchewan, University of

378

2012-2013 Series College of Agriculture  

E-Print Network [OSTI]

renew- able natural resources, including forests, soils, water, and wildlife. These missions involve.Theresearchgoalofthedepartmentistoobtainbasicandapplied information leading to wise and effective management of our natural resources. Forestry extension seeks2012-2013 Series College of Agriculture and School of Human Environmental Sciences University

Hayes, Jane E.

379

Segmenting Time Series for Weather Forecasting  

E-Print Network [OSTI]

) models is summarised as weather forecast texts. In the domain of gas turbines, sensor data from an operational gas turbine is summarised for the maintenance engineers. More details on SUMTIME have been to develop a generic model for summarisation of time series data. Initially, we have applied standard

Sripada, Yaji

380

Simulation free measurement of the B+ lifetime using decays selected using displaced tracks  

SciTech Connect (OSTI)

The lifetime of the B{sup {+-}} meson is measured using the decay channel B{sup +} {yields} {bar D}{sup 0}{pi}{sup +}. The measurement is made using approximately 1.0 fb{sup -1} of Tevatron proton-anti-proton collision data at {radical}s = 1.96 TeV collected by the CDF detector. The data were collected using impact parameter based triggers that were designed to select events with a secondary vertex. The trigger selection criteria result in data rich in a variety of B hadron decays, but intrinsically bias the lifetime distribution of the collected signal events. The traditional way to compensate for the bias is to use information from simulation. Presented here is a new method for correction of the lifetime bias using an analytical technique that uses information from the data only. This eliminates measurement uncertainty due to data and simulation agreement, ultimately resulting in a smaller systematic measurement uncertainty. The B{sup {+-}} lifetime measurement is the first measurement using this new technique and demonstrates its potential for use in future measurements. The B{sup {+-}} lifetime is measured to be {tau}(B{sup {+-}}) = 1.662 {+-} 0.023(stat) {+-} 0.015(syst)ps.

Malde, Sneha; /Oxford U.

2009-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Search for neutrinoless double-beta decay of Mo 100 with the NEMO-3 detector  

SciTech Connect (OSTI)

We report the results of a search for the neutrinoless double-ß decay (0?ßß ) of Mo 100 , using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7??kg·y , no evidence for the 0?ßß signal has been found, yielding a limit for the light Majorana neutrino mass mechanism of T 1/2 (0?ßß)>1.1×10 24 years (90% C.L.) once both statistical and systematic uncertainties are taken into account. Depending on the nuclear matrix elements this corresponds to an upper limit on the Majorana effective neutrino mass of ?m ? ?<0.3–0.9??eV (90% C.L.). Constraints on other lepton number violating mechanisms of 0?ßß decays are also given. Searching for high-energy double electron events in all suitable sources of the detector, no event in the energy region [3.2–10] MeV is observed for an exposure of 47??kg·y .

John D. Baker; A. J. Caffrey

2014-06-01T23:59:59.000Z

382

LM79XX Series 3-Terminal Negative Regulators  

E-Print Network [OSTI]

LM79XX Series 3-Terminal Negative Regulators General Description The LM79XX series of 3-terminal external component -- a compensation ca- pacitor at the output. The LM79XX series is packaged in the TO-220 conditions. Low ground pin current of the LM79XX series allows output voltage to be easily boosted above

Berns, Hans-Gerd

383

X-ray Practicals Series 1 Advanced Data Reduction  

E-Print Network [OSTI]

X-ray Practicals Series 1 Advanced Data Reduction Instructor J. Reibenspies, Ph. D. Nattamai Bhuvanesh, Ph.D. Version 1.0.0 #12;X-ray Practicals Series 2 #12;X-ray Practicals Series 3 #12;X-ray is good. The y direction is shifting the most, but the shift is ok #12;X-ray Practicals Series 5 Other

Meagher, Mary

384

Measurement of the polarization amplitudes of the Bs -> PhiPhi decay at CDF II  

SciTech Connect (OSTI)

In this thesis we present the first measurement of the polarization amplitudes for the charmless B{sub s} {yields} {phi}{phi} {yields} [K{sup +}K{sup -}][K{sup +}K{sup -}] decay of the B{sub s} meson. The result is achieved using an unbinned Maximum Likelihood fit to the data collected by the Collider Detector at Fermilab (CDF) in Run II (CDFII), in a period starting from March 2001 till April 2008, which corresponds to an integrated luminosity of 2.9 fb{sup -1}. The resulting yield consists of 300 signal events selected by the Two Track Trigger (TTT). Furthermore, our work puts in evidence an original topic, that was never observed until now: an unexpected dependence of the signal acceptance on the proper decay time (t) of the B{sub s} mesons. This specific issue, which is most likely a general feature induced by any signal selection based on the lifetime information, is supposed to be related to the on-line TTT and off-line selections based on the impact parameter. The involved fit, indeed, reproduces the biases observed in large statistics Monte Carlo (MC) samples. The thesis presents the same analysis performed for the B{sub s}{sup 0} {yields} J{psi}{phi} decay as well, which is used as a control sample. The polarizations amplitudes we find are consistent with the published ones; this result contributes to enforce the reliability of the analysis. This work is considered ready to begin the procedure for official approval by the CDF collaboration pending the finalization of the systematic uncertainty which has not yet been fully completed.

Dorigo, Mirco; /Trieste U. /INFN, Trieste

2009-10-01T23:59:59.000Z

385

Automatic computation of Taylor's series which are powers of Taylor's series  

E-Print Network [OSTI]

is concerned with the development of three machine methods for computing the coefficients of Taylor's series which are the powers of other Taylor's series. It is limited to the mathematical development of the three methods cited and the automatic... = 1, P 0 ~ Since the ob)ect of this study is to determine the coefficients P (X) as functions of b, it vrlll be relevant to consider the nature of these coefficients and the region of convergence of series (1. 1) ~ In the form of the expansion...

Cappellucci, Theodore Joseph

1963-01-01T23:59:59.000Z

386

Uranium-series constraints on radionuclide transport and groundwater flow at the Nopal I uranium deposit, Sierra Pena Blanca, Mexico  

SciTech Connect (OSTI)

Uranium-series data for groundwater samples from the Nopal I uranium ore deposit were obtained to place constraints on radionuclide transport and hydrologic processes for a nuclear waste repository located in fractured, unsaturated volcanic tuff. Decreasing uranium concentrations for wells drilled in 2003 are consistent with a simple physical mixing model that indicates that groundwater velocities are low ({approx}10 m/y). Uranium isotopic constraints, well productivities, and radon systematics also suggest limited groundwater mixing and slow flow in the saturated zone. Uranium isotopic systematics for seepage water collected in the mine adit show a spatial dependence which is consistent with longer water-rock interaction times and higher uranium dissolution inputs at the front adit where the deposit is located. Uranium-series disequilibria measurements for mostly unsaturated zone samples indicate that {sup 230}Th/{sup 238}U activity ratios range from 0.005-0.48 and {sup 226}Ra/{sup 238}U activity ratios range from 0.006-113. {sup 239}Pu/{sup 238}U mass ratios for the saturated zone are <2 x 10{sup -14}, and Pu mobility in the saturated zone is >1000 times lower than the U mobility. Saturated zone mobility decreases in the order {sup 238}U{approx}{sup 226}Ra > {sup 230}Th{approx}{sup 239}Pu. Radium and thorium appear to have higher mobility in the unsaturated zone based on U-series data from fractures and seepage water near the deposit.

Goldstein, S.J.; Abdel-Fattah, A.I.; Murrell, M.T.; Dobson, P.F.; Norman, D.E.; Amato, R.S.; Nunn, A. J.

2009-10-01T23:59:59.000Z

387

NONIDEAL MAGNETOHYDRODYNAMIC TURBULENT DECAY IN MOLECULAR CLOUDS  

SciTech Connect (OSTI)

It is well known that nonideal magnetohydrodynamic (MHD) effects are important in the dynamics of molecular clouds: both ambipolar diffusion and possibly the Hall effect have been identified as significant. We present the results of a suite of simulations with a resolution of 512{sup 3} of turbulent decay in molecular clouds, incorporating a simplified form of both ambipolar diffusion and the Hall effect simultaneously. The initial velocity field in the turbulence is varied from being super-Alfvenic and hypersonic, through to trans-Alfvenic but still supersonic. We find that ambipolar diffusion increases the rate of decay of the turbulence increasing the decay from t {sup -1.25} to t {sup -1.4}. The Hall effect has virtually no impact in this regard. The power spectra of density, velocity, and the magnetic field are all affected by the nonideal terms, being steepened significantly when compared with ideal MHD turbulence with exponents. The density power-spectra components change from {approx}1.4 to {approx}2.1 for the ideal and nonideal simulations respectively, and power spectra of the other variables all show similar modifications when nonideal effects are considered. Again, the dominant source of these changes is ambipolar diffusion rather than the Hall effect. There is also a decoupling between the velocity field and the magnetic field at short length scales. The Hall effect leads to enhanced magnetic reconnection, and hence less power, at short length scales. The dependence of the velocity dispersion on the characteristic length scale is studied and found not to be power law in nature.

Downes, T. P. [School of Cosmic Physics, Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2 (Ireland); O'Sullivan, S. [National Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9 (Ireland)], E-mail: turlough.downes@dcu.ie

2009-08-20T23:59:59.000Z

388

Fission-product-decay characteristics. Master's thesis  

SciTech Connect (OSTI)

This theses determined fission-product decay characteristics , including the total activity, the gamma-ray emission rate (GER) and gamma-ray energy spectra. The activity and GER decay were compared to Way and Wigner's t(exp(-1.2)) approximation, and the effects the spectra, activity, and GER have on the Source Normalization Constant (K) were examined. Most of the fission-product data were obtained from DKPOWR, and were compared with data obtained from ORIGIN2. Since the gamma rays are of primary concern in fallout studies, the GER is used instead of activity. The ratio of GER to activity changes significantly with time. Results of this study calculate a GER of 590 x 10/sup 16/ gamma rays/second per kT of fission yield from U-235 fuel and a K of 7059 R/Hr/(kT/sq.km.). The calculation of K includes the contribution from scattered photons. The GER result is 11% higher than reference values, while the K is within 2% of the current value in Glasstone and Dolan's The Effects of Nuclear Weapons. The Ks for Pu-239 and U-238 were within 5% of the U-235 results. The wax-wigners t(exp(-1.2)) approximation differs from time dependent GER and K up to 85% for times less than 6 months. The approximation is not valid for the GER or K at times greater than 6 months. The approximation is within about 45%, for the activity from fission-product decay to at least 5 years. A more accurate measure of exposure requires a numerical integration of the time dependent GER and Source Normalization Constant.

Millage, K.K.

1989-03-01T23:59:59.000Z

389

Measurement of the decay UPSILON(2S). -->. pi. /sup 0/. pi. /sup 0/UPSILON(1S)  

SciTech Connect (OSTI)

The hadronic transitions UPSILON(2S) ..-->.. ..pi../sup 0/..pi..UPSILON(1S) ..-->.. ..gamma gamma gamma gamma..l/sup +/l/sup -/ (l = ..mu.. or e) are investigated using the Crystal Ball detector. The analysis is based on 193,000 UPSILON(2S) events produced at the DORIS II e/sup +/e/sup -/ storage ring from November 1982 to February 1984. We observe 44 events with a muon pair and 46 events with an electron pair in the final state. The signals in both channels are relatively background free. Assuming lepton universality, we average the results for the two channels and obtain the product branching ratio B(UPSILON(2S) ..-->.. ..pi../sup 0/..pi../sup 0/UPSILON(1S)) x B/sub ll/(UPSILON(1S)) = (2.3 +- 0.3 +- 0.3) x 10/sup -3/ where the first error is statistical and the second is systematic. Using the present world average value of B/sub ll/(UPSILON(1S)) = (2.9 +- 0.3)% we derive a branching ratio B(UPSILON(2S) ..-->.. ..pi../sup 0/..pi../sup 0/UPSILON(1S)) = (8.0 +- 1.5)% where the statistical and systematic errors have been added in quadrature. This result is compared with previous results for the charged pion transitions UPSILON(2S) ..-->.. ..pi../sup +/..pi../sup -/UPSILON(1S) and with the expectation from theory. We have also investigated the mass spectrum M/sub ..pi../sup 0/..pi../sup 0// resulting from these decays and find a peaking toward high masses not accounted for the phase space alone. Fits to the ..pi../sup 0/..pi../sup 0/ mass spectrum are in quantitative agreement with previous results for the ..pi../sup +/..pi../sup -/ transitions. Angular distribution for the ..pi../sup 0/..pi../sup 0/ system and its decay products are presented in reference frames appropriate for analyzing the spin of the ..pi../sup 0/..pi../sup 0/ system, even if the initial UPSILON(1S) and the di-pion system are emitted in a relative S-wave. We find the decay distributions to be consistent with those expected for a spin zero di-pion system emitted in a relative S-wave with the UPSILON(1S).

Gelphman, D.M.

1985-09-01T23:59:59.000Z

390

A Systematic Approach to Creating and Maintaining Software Documentation  

E-Print Network [OSTI]

& Williamson) ­ Both DIF and SODOS integrated database management systems with the software documentationUVA A Systematic Approach to Creating and Maintaining Software Documentation Allison L. Powell SOURCE CODE INTERFACE BROWSING INTERFACE STATUS FUTURE PLANS WHY SOFTWARE DOCUMENTATION AS AN APPLICATION

French, James C.

391

Designing Directories in Distributed Systems: A Systematic Framework  

E-Print Network [OSTI]

Designing Directories in Distributed Systems: A Systematic Framework K. Mani Chandy and Eve M of directory­based distributed applications. We evaluate a space of directory designs using our frame­ work. We distributed applications, including directory design. We propose a weaker con­ cept: estimation. We define

392

ORIGINAL RESEARCH Systematic family-wide analysis of sodium bicarbonate  

E-Print Network [OSTI]

ORIGINAL RESEARCH Systematic family-wide analysis of sodium bicarbonate cotransporter NBCn1/SLC4A7/NBCn1 pulled down syntrophin c2 and con- versely GST/syntrophin c2 pulled down NBCn1. Moreover normally moves Na+ and HCO3 Ă? into cells and protects intracel- lular pH (pHi) from falling below normal

Hall, Randy A

393

Magnetic nanoworms Systematic Surface Engineering of Magnetic Nanoworms  

E-Print Network [OSTI]

Magnetic nanoworms Systematic Surface Engineering of Magnetic Nanoworms for in vivo Tumor Targeting and Engineering Program Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman magnetic materials nanoworms peptides tumor targeting 694 ß 2009 Wiley-VCH Verlag GmbH & Co. KGa

Bhatia, Sangeeta

394

Using Agile Practices in Global Software Development: A Systematic Review  

E-Print Network [OSTI]

Using Agile Practices in Global Software Development: A Systematic Review Emam Hossain1 Muhammad There is a growing interest in applying agile approaches in Global Software Development (GSD) projects. Recently;1 Introduction The trend in the recent software development industry is to move towards Global Software

New South Wales, University of

395

Systematic Nonlinear Planning David McAllester \\Lambda  

E-Print Network [OSTI]

of Naval Research contract N00014­85­K­0124 and N00014­89­j­3202 earliest planning systems were ``liftedSystematic Nonlinear Planning David McAllester \\Lambda MIT Artificial Intelligence Laboratory dam verifiable, lifting transformation. Previ­ ous planners have been designed directly as lifted pro­ cedures

McAllester, David

396

Removing Systematic Errors from Rotating Shadowband Pyranometer Data Frank Vignola  

E-Print Network [OSTI]

Removing Systematic Errors from Rotating Shadowband Pyranometer Data Frank Vignola Solar Radiation irradiance be- cause they do not require manual adjustment of trackers. However, a RSP requires the use of solar cell based pyranometers which underestimate diffuse irradiance by 20- 30% under clear sky

Oregon, University of

397

A Systematic Approach to the Design of Buffer Tanks  

E-Print Network [OSTI]

#12;A Systematic Approach to the Design of Buffer Tanks Audun Faanes £ ½ Sigurd Skogestad Abstract: Buffer tanks are often designed and implemented for control purposes, yet control theory is rarely used when sizing and designing buffer tanks and their control system. Instead, rules of thumb

Skogestad, Sigurd

398

A Systematic Approach to the Design of Buffer Tanks  

E-Print Network [OSTI]

#12; A Systematic Approach to the Design of Buffer Tanks Audun Faanes #3;;1 Sigurd Skogestad #3 Trondheim, NORWAY Abstract: Buffer tanks are often designed and implemented for control purposes, yet control theory is rarely used when sizing and designing buffer tanks and their control system. Instead

Skogestad, Sigurd

399

Neutrinoless double beta decay and QCD corrections  

E-Print Network [OSTI]

We consider one loop QCD corrections and renormalization group running of the neutrinoless double beta decay amplitude focusing on the short-range part of the amplitude (without the light neutrino exchange) and find that these corrections can be sizeable. Depending on the operator under consideration, there can be moderate to large cancellations or significant enhancements. We discuss several specific examples in this context. Such large corrections will lead to significant shifts in the half-life estimates which currently are known to be plagued with the uncertainties due to nuclear physics inputs to the physical matrix elements.

Namit Mahajan

2014-01-30T23:59:59.000Z

400

Inclusive B decays from resummed perturbation theory.  

E-Print Network [OSTI]

ar X iv :h ep -p h/ 07 03 03 6v 1 4 M ar 2 00 7 Inclusive B decays from resummed perturbation theory Einan Gardi Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK and Department of Applied Mathematics... for the experimentally–relevant branching fractions can be derived from resummed perturbation theory and explain the way in which the resummation further provides guidance in parametrizing non-perturbative Fermi–motion effects. Finally I address the comparison between...

Gardi, Einan

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Electron shell and the alpha-decay  

E-Print Network [OSTI]

The ratio of the alpha-decay widths of a bare nucleus and the related atom is calculated. Both the change of the form and thus the penetrability of the potential barrier and the effect of reflection in the classically-allowed region appearing due to the electron shell are taken into account in the calculations of this ratio. The contribution of each of these two effects is of one and the same order of magnitude. For long-lived radioactive samples the values of the total effect turn out to be somewhat below 1 percent.

Sergey Yu. Igashov; Yury M. Tchuvil'sky

2012-12-03T23:59:59.000Z

402

Rare b hadron decays at the LHC  

E-Print Network [OSTI]

With the completion of Run~I of the CERN Large Hadron Collider, particle physics has entered a new era. The production of unprecedented numbers of heavy-flavoured hadrons in high energy proton-proton collisions allows detailed studies of flavour-changing processes. The increasingly precise measurements allow to probe the Standard Model with a new level of accuracy. Rare $b$ hadron decays provide some of the most promising approaches for such tests, since there are several observables which can be cleanly interpreted from a theoretical viewpoint. In this article, the status and prospects in this field are reviewed, with a focus on precision measurements and null tests.

Blake, T; Hiller, G

2015-01-01T23:59:59.000Z

403

Tunneling decay rate in quantum cosmology  

E-Print Network [OSTI]

In canonical quantum cosmology, the wave function of the universe lacks explicit time dependence. However, time evolution may be present implicitly through the semiclassical superspace variables, which themselves depend on time in classical dynamics. In this paper, we apply this approach to an oscillating universe model recently introduced by Graham et al. By extending the model to include a massless, minimally coupled scalar field $\\phi$ which has little effect on the dynamics but can play the role of a "clock", we determine the decay rate of the oscillating universe.

Mithani, Audrey T

2015-01-01T23:59:59.000Z

404

Tunneling decay rate in quantum cosmology  

E-Print Network [OSTI]

In canonical quantum cosmology, the wave function of the universe lacks explicit time dependence. However, time evolution may be present implicitly through the semiclassical superspace variables, which themselves depend on time in classical dynamics. In this paper, we apply this approach to an oscillating universe model recently introduced by Graham et al. By extending the model to include a massless, minimally coupled scalar field $\\phi$ which has little effect on the dynamics but can play the role of a "clock", we determine the decay rate of the oscillating universe.

Audrey T. Mithani; Alexander Vilenkin

2015-03-02T23:59:59.000Z

405

E-Print Network 3.0 - asi series series Sample Search Results  

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

Interface for Multi-User Interaction with a Storytelling System Summary: , and poisoning food. Characters can plan a series of such actions to try to achieve a goal they have... ....

406

Summer Series 2012 - Conversation with Omar Yaghi (LBNL Summer Lecture Series)  

SciTech Connect (OSTI)

Jeff Miller, head of Public Affairs, sat down in conversation with Omar Yaghi, director of the Molecular Foundry, in the first of a series of "powerpoint-free" talks on July 11th 2012, at Berkeley Lab.

Yaghi, Omar

2012-07-11T23:59:59.000Z

407

Vector and scalar form factors for K- and D-meson semileptonic decays from twisted mass fermions with Nf = 2  

E-Print Network [OSTI]

We present lattice results for the form factors relevant in the K -> pion and D -> pion semileptonic decays, obtained from simulations with two flavors of dynamical twisted-mass fermions and pion masses as light as 260 MeV. For K -> pion decays we discuss the estimates of the main sources of systematic uncertainties, including the quenching of the strange quark, leading to our final result f+(0) = 0.9560 (57) (62). Combined with the latest experimental data, our value of f+(0) implies for the CKM matrix element |Vus| the value 0.2267 (5) (20) consistent with the first-row CKM unitarity. For D -> pion decays the application of Heavy Meson Chiral Perturbation Theory allows to extrapolate our results for both the scalar and the vector form factors at the physical point with quite good accuracy, obtaining a nice agreement with the experimental data. In particular at zero-momentum transfer we obtain f+(0) = 0.64 (5).

S. Di Vita; B. Haas; F. Mescia; V. Lubicz; S. Simula; C. Tarantino

2009-10-26T23:59:59.000Z

408

Measurement of Branching Fractions of B0 Decays to K1(1270)+ pi- and K1(1400)+ pi-  

SciTech Connect (OSTI)

We present a measurement of the branching fraction of neutral B meson decaying to final states containing a K1 meson, i.e. K{sub 1}(1270) and K{sub 1}(1400), and a charged pion. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 454 million B{bar B} pairs produced in e{sup +}e{sup -} annihilation. We measure the branching fraction {Beta}(B{sup 0} {yields} K{sub 1}{sup +}{pi}{sup -}) = (31.0 {+-} 2.7 {+-} 6.9) x 10{sup -6}, where the first error quoted is statistical and the second is systematic. In the framework of the K-matrix formalism used to describe these decays, we also set limits on the ratio of the production constants for the K{sub 1}(1270){sup +} and K{sub 1}(1400){sup +} mesons in B{sup 0} decays.

Aubert, Bernard; Bona, M.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Lopez, L.; Palano, Antimo; Pappagallo, M.; /Bari U. /INFN, Bari; Eigen, G.; Stugu, Bjarne; Sun, L.; /Bergen U.; Abrams, G.S.; Battaglia, M.; Brown, D.N.; Cahn, Robert N.; Jacobsen, R.G.; /LBL, Berkeley /Birmingham U. /Ruhr U., Bochum /Bristol U. /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San Diego /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /Ferrara U. /INFN, Ferrara /Frascati /Genoa U. /INFN, Genoa /Harvard U. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U. /Consorzio Milano Ricerche /INFN, Milan /Mississippi U. /Montreal U. /Mt. Holyoke Coll. /Napoli Seconda U. /INFN, Naples /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U. /Oregon U. /Padua U. /INFN, Padua /Paris U., VI-VII /Pennsylvania U. /Perugia U. /INFN, Perugia /INFN, Pisa /Princeton U. /Banca di Roma /Frascati /Rostock U. /Rutherford /DAPNIA, Saclay /South Carolina U. /SLAC /Stanford U., Phys. Dept. /SUNY, Albany /Tennessee U. /Texas U. /Texas U., Dallas /Turin U. /INFN, Turin /Trieste U. /INFN, Trieste /Valencia U., IFIC /Victoria U. /Warwick U. /Wisconsin U., Madison

2008-08-04T23:59:59.000Z

409

Measurement of the Inclusive Electron Spectrum in Charmless Semileptonic B Decays Near the Kinematic Endpoint and Determination of |Vub|  

SciTech Connect (OSTI)

We present a measurement of the inclusive electron spectrum in B {yields} X{sub u}e{nu} decays near the kinematic limit for B {yields} X{sub c}e{nu} transitions, using a sample of 88 million B{bar B} pairs recorded by the BABAR detector at the {Upsilon}(4S) resonance. Partial branching fraction measurements are performed in five overlapping intervals of the electron momentum; for the interval of 2.0-2.6 GeV/c we obtain {Delta}{Beta}(B {yields} X{sub u}e{nu}) = (0.572 {+-} 0.041{sub stat} {+-} 0.065{sub syst}) x 10{sup -3}. Combining this result with shape function parameters extracted from BABAR measurements of moments of the inclusive photon spectrum in B {yields} X{sub s}{gamma} decays and moments of the hadron mass and lepton energy spectra in B {yields} X{sub c}l{nu} decays we determine |V{sub ub}| = 4.44 {+-} 0.25{sub exp{sub -0.38}{sup +0.42}SF} {+-} 0.22{sub theory} x 10{sup -3}. Here the first error represents the combined statistical and systematic experimental uncertainties of the partial branching fraction measurement, the second error refers to the uncertainty of the determination of the shape function parameters, and the third error is due to theoretical uncertainties in the QCD calculations.

Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; /Annecy, LAPP; Grauges, E.; /Barcelona, IFAE; Palano, A.; Pappagallo, M.; Pompili, A.; /Bari U. /INFN, Bari; Chen, J.C.; Qi, N.D.; Rong, G.; Wang, P.; Zhu, Y.S.; /Beijing, Inst. High Energy Phys.; Eigen, G.; Ofte, I.; Stugu, B. /Bergen U. /LBL, Berkeley /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /Bristol U. /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San

2005-09-30T23:59:59.000Z

410

On charm and beauty decays: A theorist's perspective  

SciTech Connect (OSTI)

The present understanding of charm and bottom decays is reviewed. Special emphasis is placed on discussing the theoretical uncertainties in view of the particularly rich harvest of new data from the last year. A semi-quantitative description of D decays has emerged enabling us to address rather detailed and relatively subtle questions there, like on once and twice Cabibbo suppressed decays. Beauty physics having left its infancy is now in its adolescence; its future development towards maturity is analyzed.

Bigi, I.I.

1987-10-01T23:59:59.000Z

411

Neutrinoless Double Beta Decay in Supersymmetric Seesaw model  

E-Print Network [OSTI]

Inspired by the recent HEIDELBERG-MOSCOW double beta decay experiment, we discuss the neutrinoless double beta decay in the supersymmetric seesaw model. Our numerical analysis indicates that we can naturally explain the data of the observed neutrinoless double beta decay, as well as that of the solar and atmospheric neutrino experiments with at least one Majorana-like sneutrino of middle energy scale in the model.

Tai-Fu Feng; Xue-Qian Li; Yan-An Luo

2002-09-26T23:59:59.000Z

412

Decay of charged fields in de Sitter spacetime  

E-Print Network [OSTI]

We study the decay of charged scalar and spinor fields around Reissner-Nordstrom black holes in de Sitter spacetime through calculations of quasinormal frequencies of the fields. The influence of the parameters of the black hole (charge, mass), of the decaying fields (charge, spin), and of the spacetime (cosmological constant) on the decay is analyzed. The analytic formula for calculation quasinormal frequencies for a large multipole number (eikonal approximation) is derived both for the spinor and scalar fieldss.

A. A. Smirnov

2005-05-12T23:59:59.000Z

413

Neutrinoless double beta decay search with the NEMO 3 experiment  

E-Print Network [OSTI]

The NEMO 3 experiment searches for neutrinoless double beta decay and makes precision measurements of two-neutrino double beta decay in seven isotopes. The latest two-neutrino half-life results are presented, together with the limits on neutrinoless half-lives and the corresponding effective Majorana neutrino masses. Also given are the limits obtained on neutrinoless double beta decay mediated by Rp-violating SUSY, right-hand currents and different Majoron emission modes.

Irina Nasteva; for the NEMO 3 Collaboration

2008-10-03T23:59:59.000Z

414

Neutrinoless double beta decay search with the NEMO 3 experiment  

SciTech Connect (OSTI)

The NEMO 3 experiment searches for neutrinoless double beta decay and makes precision measurements of two-neutrino double beta decay in seven isotopes. The latest two-neutrino half-life results are presented, together with the limits on neutrinoless half-lives and the corresponding effective Majorana neutrino masses. Also given are the limits obtained on neutrinoless double beta decay mediated by R{sub p}-violating SUSY, right-hand currents and different Majoron emission modes.

Nasteva, Irina [Particle Physics Group, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL (United Kingdom)

2008-11-23T23:59:59.000Z

415

Results of the NEMO-3 Double Beta Decay Experiment  

E-Print Network [OSTI]

The NEMO-3 experiment is searching for neutrinoless double beta decay for 2 main isotopes (100Mo and 82Se) and is studying the two-neutrino double beta decay of seven isotopes. The experiment has been taking data since 2003 and, up to the end of 2009, showed no evidence for neutrinoless double beta decay. Two 90 % CL lower limits on the half-lives of the transitions were obtained : T_{1/2}^{0\

Mathieu BONGRAND for the NEMO-3 Collaboration

2011-05-12T23:59:59.000Z

416

Normalizing the causality between time series  

E-Print Network [OSTI]

Recently, a rigorous yet concise formula has been derived to evaluate the information flow, and hence the causality in a quantitative sense, between time series. To assess the importance of a resulting causality, it needs to be normalized. The normalization is achieved through distinguishing three types of fundamental mechanisms that govern the marginal entropy change of the flow recipient. A normalized or relative flow measures its importance relative to other mechanisms. In analyzing realistic series, both absolute and relative information flows need to be taken into account, since the normalizers for a pair of reverse flows belong to two different entropy balances; it is quite normal that two identical flows may differ a lot in relative importance in their respective balances. We have reproduced these results with several autoregressive models. We have also shown applications to a climate change problem and a financial analysis problem. For the former, reconfirmed is the role of the Indian Ocean Dipole as ...

Liang, X San

2015-01-01T23:59:59.000Z

417

Director`s series on proliferation  

SciTech Connect (OSTI)

This series is an occasional publication of essays on the topics of nuclear, chemical, biological, and missile proliferation. Essays contained in this document include: Key issues on NPT renewal and extension, Africa and nuclear nonproliferation, Kenya`s views on the NPT, Prospects for establishing a zone free of weapons of mass destruction in the middle east, effects of a special nuclear weapon materials cut-off convention, and The UK view of NPT renewal.

Bailey, K.C.; Price, M.E. [eds.

1994-10-17T23:59:59.000Z

418

Decay of Solutions to Viscous asymptotical models for waterwaves ...  

E-Print Network [OSTI]

Global Science Preprint .... We plan to let ? ?0. We then apply the ... From the energy equality in the section above, it transpires that the solution decays to 0.

2010-02-08T23:59:59.000Z

419

Searches for Leptonic B Decays at BaBar  

SciTech Connect (OSTI)

Measurements of the branching fractions of purely leptonic decays of B-mesons translate into constraints in the plane of the charged Higgs mass versus tan {beta} which are relatively insensitive to the particular theoretical model. Using the full BABAR dataset of 450 million B-decays we search for these decays. No significant signal is found in the decays into electrons or muons and we set upper limits on the branching fractions of the order of a 10{sup -6} at 90% confidence level. We measure the branching fraction of B {yields} {tau}{mu} to be (1.7 {+-} 0.6) x 10{sup -4}.

Nelson, Silke; /SLAC

2012-04-25T23:59:59.000Z

420

Search for New Physics in Rare Top Decays  

E-Print Network [OSTI]

Top physics provides a fertile ground for new-physics searches. At present, most top observables appear to be in good agreement with the respective Standard Model predictions. However, in the case of decay modes that are suppressed in the Standard Model, new-physics contributions of comparable magnitude may exist and yet go unnoticed because their impact on the total decay width is small. Hence it is interesting to probe rare top decays. This analysis focuses on the decay $t \\to b \\bar b c$. Useful observables are identified and prospects for measuring new-physics parameters are examined.

Pratishruti Saha

2014-11-27T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Spectroscopy and Decay of $B$ Hadrons at the Tevatron  

SciTech Connect (OSTI)

The authors review recent results on heavy quark physics focusing on Run II measurements of B hadron spectroscopy and decay at the Tevatron. A wealth of new B physics measurements from CDF and D0 has been available. These include the spectroscopy of excited B states (B**, B**{sub s}) and the observation of the {Sigma}{sub b} baryon. The discussion of the decays of B hadrons and measurements of branching fractions focuses on charmless two-body decays of B {yields} h{sup +}h{sup -}. They report several new B{sub s}{sup 0} and {Lambda}{sub b}{sup 0} decay channels.

Paulini, Manfred

2007-02-01T23:59:59.000Z

422

Remarks on the formation and decay of multidimensional shock waves  

E-Print Network [OSTI]

In this paper, we present a formula describing the formation and decay of shock wave type solutions in some special cases.

V. G. Danilov

2005-12-27T23:59:59.000Z

423

About radiative kaon decay \\k+ \\to ?+\\pi0?  

E-Print Network [OSTI]

With usage of the Low theorem the general expression for amplitude of radiative kaon decay \\k+ \\to \\pi+\\pi0\\gamma is determined.

V. P. Efrosinin

2006-06-20T23:59:59.000Z

424

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

We assess how well next generation neutrinoless double beta decay and normal neutrino beta decay experiments can answer four fundamental questions. 1) If neutrinoless double beta decay searches do not detect a signal, and if the spectrum is known to be inverted hierarchy, can we conclude that neutrinos are Dirac particles? 2) If neutrinoless double beta decay searches are negative and a next generation ordinary beta decay experiment detects the neutrino mass scale, can we conclude that neutrinos are Dirac particles? 3) If neutrinoless double beta decay is observed with a large neutrino mass element, what is the total mass in neutrinos? 4) If neutrinoless double beta decay is observed but next generation beta decay searches for a neutrino mass only set a mass upper limit, can we establish whether the mass hierarchy is normal or inverted? We base our answers on the expected performance of next generation neutrinoless double beta decay experiments and on simulations of the accuracy of calculations of nuclear matrix elements.

John N. Bahcall; Hitoshi Murayama; Carlos Pena-Garay

2004-04-08T23:59:59.000Z

425

Mass Measurement Using Energy Spectra in Three-body Decays  

E-Print Network [OSTI]

In previous works we have demonstrated how the energy distribution of massless decay products in two body decays can be used to measure the mass of decaying particles. In this work we show how such results can be generalized to the case of multi-body decays. The key ideas that allow us to deal with multi-body final states are an extension of our previous results to the case of massive decay products and the factorization of the multi-body phase space. The mass measurement strategy that we propose is distinct from alternative methods because it does not require an accurate reconstruction of the entire event, as it does not involve, for instance, the missing transverse momentum, but rather requires measuring only the visible decay products of the decay of interest. To demonstrate the general strategy, we study a supersymmetric model wherein pair-produced gluinos each decay to a stable neutralino and a bottom quark-antiquark pair via an off-shell bottom squark. The combinatorial background stemming from the indistinguishable visible final states on both decay sides can be treated by an "event mixing" technique, the performance of which is discussed in detail. Taking into account dominant backgrounds, we are able to show that the mass of the gluino and, in favorable cases, that of the neutralino can be determined by this mass measurement strategy.

Kaustubh Agashe; Roberto Franceschini; Doojin Kim; Kyle Wardlow

2015-03-12T23:59:59.000Z

426

Role of deformation in exotic decay studies  

SciTech Connect (OSTI)

We have recently constructed a model for exotic decay studies using a cubic potential for the overlapping region that is smoothly connected by a Yukawa-plus-exponential potential for the region after separation. In this model, the zero-point vibration energy is explicitly used without violating the energy conservation and the inertial mass coefficient is made dependent on the center of mass distance, but the deformation effect has not been included. In this work, it is taken into account in both the parent and the daughter nuclei, keeping the emitted nucleus always spherical. This model is applied to the cases of {sup 14}C and {sup 24}Ne emissions and also for the recently reported cases of {sup 26}Ne, {sup 28,30}Mg, and {sup 34}Si emissions. It is found that the effect of the fragment deformation (which is always very small in the above decays) on lifetime is negligible while the parent deformation plays an appreciable role in the lifetime calculations.

Shanmugam, G.; Kamalaharan, B. (Department of Physics, Presidency College, Madras 600 005, India (IN))

1990-03-01T23:59:59.000Z

427

Interacting Dark Energy: Decay into Fermions  

E-Print Network [OSTI]

A dark energy component is responsible for the present stage of acceleration of our universe. If no fine tuning is assumed on the dark energy potential then it will end up dominating the universe at late times and the universe will not stop this stage of acceleration. On the other hand, the equation of state of dark energy seems to be smaller than -1 as suggested by the cosmological data. We take this as an indication that dark energy does indeed interact with another fluid (we consider fermion fields) and we determine the interaction through the cosmological data and extrapolate it into the future. We study the conditions under which a dark energy can dilute faster or decay into the fermion fields. We show that it is possible to live now in an accelerating epoch dominated by the dark energy and without introducing any fine tuning parameters the dark energy can either dilute faster or decaying into fermions in the future. The acceleration of the universe will then cease.

A. de la Macorra

2007-02-08T23:59:59.000Z

428

SEE Action Series: Local Strategies for Whole-Building Energy...  

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

management that sets long-term goals and systematically monitors progress at building and organizational level * Why strategic energy management? - Increase energy savings and...

429

In-pile measurements of the decay constants and relative abundances of delayed neutrons  

SciTech Connect (OSTI)

An in-pile experimental technique to measure the decay constants and the relative abundances of the delayed neutron groups applicable for a given reactor system is presented. The method is based on a least-squares-fitting technique that simultaneously fits a series of transients produced by small reactivity perturbations to a reactor operating initially at delayed critical. The function that is least-squares fit is the analytic solution (written in terms of an arbitrary number of delayed neutron groups) as obtained by the point reactor model for the reactor response following a step change in reactivity. The application of the method does not require any knowledge of the size of the reactivity perturbations, and the method is independent of the detector efficiency. The results are based solely on the measurable quantities of relative power, time, and one measurable root of the Inhour equation.

Spriggs, G.D. (Los Alamos National Lab., NM (United States))

1993-08-01T23:59:59.000Z

430

ON THE ESTIMATION OF SYSTEMATIC UNCERTAINTIES OF STAR FORMATION HISTORIES  

SciTech Connect (OSTI)

In most star formation history (SFH) measurements, the reported uncertainties are those due to effects whose sizes can be readily measured: Poisson noise, adopted distance and extinction, and binning choices in the solution itself. However, the largest source of error, systematics in the adopted isochrones, is usually ignored and very rarely explicitly incorporated into the uncertainties. I propose a process by which estimates of the uncertainties due to evolutionary models can be incorporated into the SFH uncertainties. This process relies on application of shifts in temperature and luminosity, the sizes of which must be calibrated for the data being analyzed. While there are inherent limitations, the ability to estimate the effect of systematic errors and include them in the overall uncertainty is significant. The effects of this are most notable in the case of shallow photometry, with which SFH measurements rely on evolved stars.

Dolphin, Andrew E., E-mail: adolphin@raytheon.com [Raytheon Company, Tucson, AZ 85734 (United States)

2012-05-20T23:59:59.000Z

431

A systematic approach to recurring event/problem determination  

SciTech Connect (OSTI)

This paper describes the basic elements and systematic process developed at Duke Power Company for determining recurring events and recurring problems. The first basic element used to support this process is the problem investigation report (PIR) program. The PIR program serves as the mechanism by which US Nuclear Regulatory Commission (NRC) reportable and nonreportable events and problems are identified, investigated, and resolved. The second basic element used to support this process is the in-house operating experience (OE) computerized data base. This data base contains information specific to each event and designed to facilitate data manipulation and sorting. Finally, the recurring event/problem guideline has been developed to systematically lead the user through the process using the PIR and OE programs. This paper very briefly describes the PIR data-handling process and summarizes the major changes to the process.

Futrell, R.C.

1990-06-01T23:59:59.000Z

432

Constraints from cosmic rays on non-systematic Lorentz violation  

E-Print Network [OSTI]

In this article we analyze the radiation loss from a high energy cosmic ray proton propagating in a spacetime with non-systematic Lorentz violation. From an effective field theory perspective we illuminate flaws in previous attempts that use threshold approaches to analyze this problem. We argue that in general such approaches are of rather limited use when dealing with non-systematic Lorentz violating scenarios. The main issues we raise are a) the limited applicability of threshold energy conservation rules when translation invariance is broken and b) the large amounts of proton particle production due to the time dependence of the fluctuations. Ignoring particle production, we derive a constraint on the magnitude of velocity fluctuation $|v_f|<10^{-6.5}$, much weaker than has been previously argued. However, we show that in fact particle production makes any such constraint completely unreliable.

Sayandeb Basu; David Mattingly

2005-07-05T23:59:59.000Z

433

Accurate and systematically improvable density functional theory embedding for correlated wavefunctions  

SciTech Connect (OSTI)

We analyze the sources of error in quantum embedding calculations in which an active subsystem is treated using wavefunction methods, and the remainder using density functional theory. We show that the embedding potential felt by the electrons in the active subsystem makes only a small contribution to the error of the method, whereas the error in the nonadditive exchange-correlation energy dominates. We test an MP2 correction for this term and demonstrate that the corrected embedding scheme accurately reproduces wavefunction calculations for a series of chemical reactions. Our projector-based embedding method uses localized occupied orbitals to partition the system; as with other local correlation methods, abrupt changes in the character of the localized orbitals along a reaction coordinate can lead to discontinuities in the embedded energy, but we show that these discontinuities are small and can be systematically reduced by increasing the size of the active region. Convergence of reaction energies with respect to the size of the active subsystem is shown to be rapid for all cases where the density functional treatment is able to capture the polarization of the environment, even in conjugated systems, and even when the partition cuts across a double bond.

Goodpaster, Jason D.; Barnes, Taylor A.; Miller, Thomas F., E-mail: tfm@caltech.edu [Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125 (United States); Manby, Frederick R., E-mail: fred.manby@bristol.ac.uk [Centre for Computational Chemistry, School of Chemistry, University of Bristol, Bristol BS8 ITS (United Kingdom)

2014-05-14T23:59:59.000Z

434

Energy systematics of heavy nuclei -- mean field models in comparison  

E-Print Network [OSTI]

We compare the systematics of binding energies computed within the standard and extended versions of the relativistic mean-field (RMF) model and the Skyrme Hartree-Fock (SHF) model. The general trends for the binding energies for super-heavy nuclei are significantly different for these models. The SHF models tend to underbind the superheavy nuclei, while, RMF models show just the opposite trend. The extended RMF model seems to provide remarkable improvements over the results obtained for the standard RMF model.

P. -G. Reinhard; B. K. Agrawal

2010-12-10T23:59:59.000Z

435

Significant neutrinoless double beta decay with quasi-Dirac neutrinos  

E-Print Network [OSTI]

A significant signal of neutrinoless double beta decay can be consistent with the existence of light quasi-Dirac neutrinos. To demonstrate this possibility, we consider a realistic model where the neutrino masses and the neutrinoless double beta decay can be simultaneously generated after a Peccei-Quinn symmetry breaking.

Pei-Hong Gu

2012-09-13T23:59:59.000Z

436

Mass Measurement Using Energy Spectra in Three-body Decays  

E-Print Network [OSTI]

In previous works we have demonstrated how the energy distribution of massless decay products in two body decays can be used to measure the mass of decaying particles. In this work we show how such results can be generalized to the case of multi-body decays. The key ideas that allow us to deal with multi-body final states are an extension of our previous results to the case of massive decay products and the factorization of the multi-body phase space. The mass measurement strategy that we propose is distinct from alternative methods because it does not require an accurate reconstruction of the entire event, as it does not involve, for instance, the missing transverse momentum, but rather requires measuring only the visible decay products of the decay of interest. To demonstrate the general strategy, we study a supersymmetric model wherein pair-produced gluinos each decay to a stable neutralino and a bottom quark-antiquark pair via an off-shell bottom squark. The combinatorial background stemming from the indi...

Agashe, Kaustubh; Kim, Doojin; Wardlow, Kyle

2015-01-01T23:59:59.000Z

437

Double beta decay to the excited states: experimental review  

E-Print Network [OSTI]

A brief review on double beta decay to excited states of daughter nuclei is given. The ECEC(ov) transision to the excited states are discussed in association with a possible enhancement of the decay rate by several orders of magnitude.

A. S. Barabash

2007-10-11T23:59:59.000Z

438

SciTech Connect: Beta Decay of B12  

Office of Scientific and Technical Information (OSTI)

Journal Article: Beta Decay of B12 Citation Details In-Document Search Title: Beta Decay of B12 The 3.23-Mev gamma-ray transition between the 7.66 and 4.43-Mev states of C12 has...

439

Dalitz Analysis of Three-Body B Decays  

E-Print Network [OSTI]

Results on Dalitz analysis of three-body charmless B+=>K+pi+pi- and B+=>K+K+K- decays are reported. We also present preliminary results on the studies of direct CP violation in three-body decay B+-=>K+-pi+pi-. The analysis is performed using a large data sample collected with the Belle detector.

A. Garmash; for the Belle Collaboration

2005-05-16T23:59:59.000Z

440

One Year of Evidence for Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The present experimental status in the search for neutrinoless double beta decay is reviewed, with emphasis on the first indication for neutrinoless double beta decay found in the HEIDELBERG-MOSCOW experiment, giving first evidence for lepton number violation and a Majorana nature of the neutrinos. Future perspectives of the field are briefly outlined.

H. V. Klapdor-Kleingrothaus

2003-02-26T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Evidence for the Decay X(3872) ? ?(2S)?  

E-Print Network [OSTI]

Evidence for the decay mode X(3872) ? ?(2S)? in B[superscript +] ? X(3872)K[superscript +] decays is found with a significance of 4.4 standard deviations. The analysis is based on a data sample of proton–proton collisions, ...

Counts, Ian Thomas Hunt

442

Scaling Factor Inconsistencies in Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The modern theory of neutrinoless double beta decay includes a scaling factor that has often been treated inconsistently in the literature. The nuclear contribution to the decay half life can be suppressed by 15-20% when scaling factors are mismatched. Correspondingly, $$ is overestimated.

S. Cowell

2005-12-05T23:59:59.000Z

443

Scaling factor inconsistencies in neutrinoless double beta decay  

SciTech Connect (OSTI)

The modern theory of neutrinoless double beta decay includes a scaling factor that has often been treated inconsistently in the literature. The nuclear contribution to the decay half-life can be suppressed by 15%-20% when scaling factors are mismatched. Correspondingly, is overestimated.

Cowell, S. [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2006-02-15T23:59:59.000Z

444

Neutrinoless double-{beta} decay: Status and future  

SciTech Connect (OSTI)

A brief summary of the status of neutrino masses, mixing, and oscillations is presented. Neutrinoless double {beta} decay is considered. Predictions for the effective Majorana mass are reviewed. A possible test of the calculations of nuclear matrix elements of the 0{nu}{beta}{beta} decay is proposed.

Bilenky, S. M. [Joint Institute for Nuclear Research (Russian Federation)], E-mail: bilenky@he.sissa.it

2006-12-15T23:59:59.000Z

445

Strategies for Next Generation Neutrinoless Double-Beta Decay Experiments  

E-Print Network [OSTI]

Strategies for Next Generation Neutrinoless Double-Beta Decay Experiments F. T. Avignone III A brief discussion of the connection between neutrino oscillation data and predictions of neutrinoless the necessary tools for comparative evaluation. 1. INTRODUCTION Neutrinoless double-beta (0)-decay has been

446

Neutrinoless double-beta decay. A brief review  

E-Print Network [OSTI]

In this brief review we discuss the generation of Majorana neutrino masses through the see-saw mechanism, the theory of neutrinoless double-beta decay, the implications of neutrino oscillation data for the effective Majorana mass, taking into account the recent Daya Bay measurement of theta_13, and the interpretation of the results of neutrinoless double-beta decay experiments.

S. M. Bilenky; C. Giunti

2012-03-23T23:59:59.000Z

447

Study of Bc->KK decay with perturbative QCD approach  

E-Print Network [OSTI]

In the framework of the perturbative QCD approach, we study the charmless pure weak annihilation Bc->KK decay and find that the branching ratio BR(Bc->KK) O(10^-7). This prediction is so tiny that the Bc->KK decay might be unmeasurable at the Large Hadron Collider.

Yue-Ling Yang; Jun-Feng Sun; Na Wang

2010-04-16T23:59:59.000Z

448

Search for baryon number violation in top-quark decays  

E-Print Network [OSTI]

A search for baryon number violation (BNV) in top-quark decays is performed using pp collisions produced by the LHC at [sqrt s]=8 TeV. The top-quark decay considered in this search results in one light lepton (muon or ...

CMS Collaboration

449

Hadronic B decays at BaBar and Belle  

SciTech Connect (OSTI)

The authors review recent results of the BABAR and Belle Collaborations on the {alpha} and {gamma} angles of the unitarity triangle, on the B {yields} K{pi}{pi} Dalitz-plot analyses, and on the searches for baryonic B decays and for B {yields} D{bar D} decays.

Lombardo, Vincenzo; /Milan U. /INFN, Milan

2008-08-11T23:59:59.000Z

450

Double Beta Decay and the Absolute Neutrino Mass Scale  

E-Print Network [OSTI]

After a short review of the current status of three-neutrino mixing, the implications for the values of neutrino masses are discussed. The bounds on the absolute scale of neutrino masses from Tritium beta-decay and cosmological data are reviewed. Finally, we discuss the implications of three-neutrino mixing for neutrinoless double-beta decay.

Carlo Giunti

2003-08-20T23:59:59.000Z

451

First search for CP violation in tau lepton decay  

E-Print Network [OSTI]

We have performed the first search for CP violation in tau lepton decay. CP violation in lepton decay does not occur in the minimal standard model but can occur in extensions such as the multi-Higgs doublet model. It appears as a characteristic...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L.

1998-11-01T23:59:59.000Z

452

anisotropic decay dynamics: Topics by E-print Network  

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

anisotropic decay dynamics First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Anisotropic decay dynamics...

453

Series Resonant Inverter with Contactless Transformers for Multiple LED Lamps.  

E-Print Network [OSTI]

??A half-bridge series-resonant inverter adopted to realize the quasi current source and the constant current source with a number of contactless transformers in series for… (more)

Cheng, Shuen-Wen

2013-01-01T23:59:59.000Z

454

National High Magnetic Field Laboratory - Series Connected Hybrid  

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

Magnet Lab Series Connected Hybrid for Magnet Lab Figure 1. Vertical Section of the Series Connected Hybrid Magnet for the Mag Lab. The Magnet Lab has embarked on innovative...

455

EECLP Webinar Series - #4 Residential Energy Efficiency Deep...  

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

Series - 4 Residential Energy Efficiency Deep Dive, Part Two EECLP Webinar Series - 4 Residential Energy Efficiency Deep Dive, Part Two December 18, 2014 3:00PM to 4:00PM EST...

456

Progress in computing inclusive B decay spectra.  

E-Print Network [OSTI]

ar X iv :h ep -p h/ 06 01 18 1v 1 2 1 Ja n 20 06 Progress in computing inclusive B decay spectra Einan Gardi and Jeppe R. Andersen Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK We review the progress... V, M0E =1.7GeV x =1GeV, M0E =1.7GeV, fully diff. x =1GeV, M0E =0.66GeV max + =1GeV, P0E =0.66GeV, fully diff. max + =1GeV, P0E Figure 4. The P? spectrum in BŻ ?? Xul?Ż as calculated by DGE [17], after integration over P+ and El in four different...

Gardi, Einan; Andersen, Jeppe R

457

Noncharacteristic half-lives in radioactive decay  

SciTech Connect (OSTI)

Half-lives of radionuclides span more than 50 orders of magnitude. We characterize the probability distribution of this broad-range data set at the same time that we explore a method for fitting power laws and testing goodness-of-fit. It is found that the procedure proposed recently by Clauset et al.[SIAM Rev. 51, 661 (2009)] does not perform well as it rejects the power-law hypothesis even for power-law synthetic data. In contrast, we establish the existence of a power-law exponent with a value around 1.1 for the half-life density, which can be explained by the sharp relationship between decay rate and released energy, for different disintegration types. For the case of alpha emission, this relationship constitutes an original mechanism of power-law generation.

Corral, Alvaro; Font, Francesc [Centre de Recerca Matematica, Edifici Cc, Campus Bellaterra, E-08193 Barcelona (Spain); Camacho, Juan [Grup FESTA, Facultat de Ciencies, Universitat Autonoma de Barcelona, E-08193 Barcelona (Spain)

2011-06-15T23:59:59.000Z

458

Neutrinoless Double Beta Decay with SNO+  

E-Print Network [OSTI]

SNO+ will search for neutrinoless double beta decay by loading 780 tonnes of linear alkylbenzene liquid scintillator with O(tonne) of neodymium. Using natural Nd at 0.1% loading will provide 43.7 kg of 150Nd given its 5.6% abundance and allow the experiment to reach a sensitivity to the effective neutrino mass of 100-200 meV at 90% C.L in a 3 year run. The SNO+ detector has ultra low backgrounds with 7000 tonnes of water shielding and self-shielding of the scintillator. Distillation and several other purification techniques will be used with the aim of achieving Borexino levels of backgrounds. The experiment is fully funded and data taking with light-water will commence in 2012 with scintillator data following in 2013.

J. Hartnell; for the SNO+ collaboration

2012-01-30T23:59:59.000Z

459

Experimental searches of neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double decay is a unique probe for lepton number conservation and neutrino properties. It allows to investigate the Dirac/Majorana nature of the neutrinos and their absolute mass scale (hierarchy problem) with unprecedented sensitivity. A number of experiments are presently under preparation to cover the quasi-degenerate region of the neutrino mass spectrum. Improved sensitivities are however required to sound the so-called inverted hierarchy region. This is a real challenge faced by a number of new proposed projects, based either on large expansions of the present experiments or on new ideas top improve the technical performance or reduce the background contributions. A review of the most relevant ongoing experiments is given. The most relevant parameters contributing to the experimental sensitivity are discussed and a critical comparison of the future projects is proposed.

Oliviero Cremonesi

2012-12-19T23:59:59.000Z

460

Nonsingular Decaying Vacuum Cosmology and Entropy Production  

E-Print Network [OSTI]

The thermodynamic behavior of a decaying vacuum cosmology describing the entire cosmological history evolving between two extreme (early and late time) de Sitter eras is investigated. The thermal evolution from the early de Sitter to the radiation phase is discussed in detail. The temperature evolution law and the increasing entropy function are analytically determined. The entropy of the effectively massless particles is initially zero but evolves continuously to the present day maximum value within the current Hubble radius, $S_0 \\sim 10^{88}$ in natural units. By using the Gibbons-Hawking temperature relation for the de Sitter spacetime, it is found that the ratio between the primeval and the late time vacuum energy densities is $\\rho_{vI}/\\rho_{v0} \\sim 10^{123}$, as required by some naive estimates from quantum field theory.

J. A. S. Lima; S. Basilakos; Joan Solŕ

2015-03-08T23:59:59.000Z

Note: This page contains sample records for the topic "decay series systematics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Macdonald Polynomials and Multivariable Basic Hypergeometric Series  

E-Print Network [OSTI]

We study Macdonald polynomials from a basic hypergeometric series point of view. In particular, we show that the Pieri formula for Macdonald polynomials and its recently discovered inverse, a recursion formula for Macdonald polynomials, both represent multivariable extensions of the terminating very-well-poised 6-phi-5 summation formula. We derive several new related identities including multivariate extensions of Jackson's very-well-poised 8-phi-7 summation. Motivated by our basic hypergeometric analysis, we propose an extension of Macdonald polynomials to Macdonald symmetric functions indexed by partitions with complex parts. These appear to possess nice properties.

Michael J. Schlosser

2007-03-30T23:59:59.000Z

462

Director`s series on proliferation  

SciTech Connect (OSTI)

The Director`s Series on Proliferation is an occasional publication of essays on the topics of nuclear, chemical, biological, and missile proliferation. The seven papers presented in this issue cover the following topics: Should the Treaty on the Nonproliferation of Nuclear Weapons (NPT) be amended?; NPT extension - Legal and procedural issues; An Indonesian view of NPT review conference issues; The treaty of Tlatelolco and the NPT - Tools for peace and development; Perspectives on cut-off, weapons dismantlement, and security assurances; Belarus and NPT challenges; A perspective on the chemical weapons convention - Lessons learned from the preparatory commission.

Bailey, K.C.; Price, M.E. [eds.

1994-12-27T23:59:59.000Z

463

Celebrating Einstein A Series of Articles  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation Sites ProposedOccupational Healthcatalysts .Cees de LaatA Series of

464

Fermilab Arts & Lecture Series Tickets  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxial ThinFORFALL NEWSFemtosecond X-ray4, Archive

465

Fermilab | Physics for Everyone | Lecture Series  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxialtransatlantic network to benefitgreen thumbsPhysics for

466

Measurement of the CP-violating phase ?sJ/?? using the flavor-tagged decay Bs0?J/ ?? in 8 fb?ą of pp? collisions  

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

We report an updated measurement of the CP-violating phase, ?sJ/??, and the decay-width difference for the two mass eigenstates, ??s, from the flavor-tagged decay B0s?J/??. The data sample corresponds to an integrated luminosity of 8.0 fb?ą accumulated with the D0 detector using pp? collisions at ?s=1.96 TeV produced at the Fermilab Tevatron collider. The 68% Bayesian credibility intervals, including systematic uncertainties, are ??s=0.163+0.065?0.064 ps?ą and ?sJ/??=?0.55+0.38?0.36. The p-value for the Standard Model point is 29.8%.

Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Alverson, G.; Alves, G. A.; Aoki, M.; Arov, M.; Askew, A.; Ĺsman, B.; Atkins, S.; Atramentov, O.; Augsten, K.; Avila, C.; BackusMayes, J.; Badaud, F.; Bagby, L.; Baldin, B.; Bandurin, D. V.; Banerjee, S.; Barberis, E.; Baringer, P.; Barreto, J.; Bartlett, J. F.; Bassler, U.; Bazterra, V.; Bean, A.; Begalli, M.; Begel, M.; Belanger-Champagne, C.; Bellantoni, L.; Beri, S. B.; Bernardi, G.; Bernhard, R.; Bertram, I.; Besançon, M.; Beuselinck, R.; Bezzubov, V. A.; Bhat, P. C.; Bhatnagar, V.; Blazey, G.; Blessing, S.; Bloom, K.; Boehnlein, A.; Boline, D.; Boos, E. E.; Borissov, G.; Bose, T.; Brandt, A.; Brandt, O.; Brock, R.; Brooijmans, G.; Bross, A.; Brown, D.; Brown, J.; Bu, X. B.; Buehler, M.; Buescher, V.; Bunichev, V.; Burdin, S.; Burnett, T. H.; Buszello, C. P.; Calpas, B.; Camacho-Pérez, E.; Carrasco-Lizarraga, M. A.; Casey, B. C. K.; Castilla-Valdez, H.; Chakrabarti, S.; Chakraborty, D.; Chan, K. M.; Chandra, A.; Chapon, E.; Chen, G.; Chevalier-Théry, S.; Cho, D. K.; Cho, S. W.; Choi, S.; Choudhary, B.; Cihangir, S.; Claes, D.; Clutter, J.; Cooke, M.; Cooper, W. E.; Corcoran, M.; Couderc, F.; Cousinou, M.-C.; Croc, A.; Cutts, D.; Das, A.; Davies, G.; De, K.; de Jong, S. J.; De La Cruz-Burelo, E.; Déliot, F.; Demarteau, M.; Demina, R.; Denisov, D.; Denisov, S. P.; Desai, S.; Deterre, C.; DeVaughan, K.; Diehl, H. T.; Diesburg, M.; Ding, P. F.; Dominguez, A.; Dorland, T.; Dubey, A.; Dudko, L. V.; Duggan, D.; Duperrin, A.; Dutt, S.; Dyshkant, A.; Eads, M.; Edmunds, D.; Ellison, J.; Elvira, V. D.; Enari, Y.; Evans, H.; Evdokimov, A.; Evdokimov, V. N.; Facini, G.; Ferbel, T.; Fiedler, F.; Filthaut, F.; Fisher, W.; Fisk, H. E.; Fortner, M.; Fox, H.; Fuess, S.; Garcia-Bellido, A.; García-Guerra, G. A.; Gavrilov, V.; Gay, P.; Geng, W.; Gerbaudo, D.; Gerber, C. E.; Gershtein, Y.; Ginther, G.; Golovanov, G.; Goussiou, A.; Grannis, P. D.; Greder, S.; Greenlee, H.; Greenwood, Z. D.; Gregores, E. M.; Grenier, G.; Gris, Ph.; Grivaz, J.-F.; Grohsjean, A.; Grünendahl, S.; Grünewald, M. W.; Guillemin, T.; Gutierrez, G.; Gutierrez, P.; Haas, A.; Hagopian, S.; Haley, J.; Han, L.; Harder, K.; Harel, A.; Hauptman, J. M.; Hays, J.; Head, T.; Hebbeker, T.; Hedin, D.; Hegab, H.; Heinson, A. P.; Heintz, U.; Hensel, C.; Heredia-De La Cruz, I.; Herner, K.; Hesketh, G.; Hildreth, M. D.; Hirosky, R.; Hoang, T.; Hobbs, J. D.; Hoeneisen, B.; Hohlfeld, M.; Hubacek, Z.; Huske, N.; Hynek, V.; Iashvili, I.; Ilchenko, Y.; Illingworth, R.; Ito, A. S.; Jabeen, S.; Jaffré, M.; Jamin, D.; Jayasinghe, A.; Jesik, R.; Johns, K.; Johnson, M.; Jonckheere, A.; Jonsson, P.; Joshi, J.; Jung, A. W.; Juste, A.; Kaadze, K.; Kajfasz, E.; Karmanov, D.; Kasper, P. A.; Katsanos, I.; Kehoe, R.; Kermiche, S.; Khalatyan, N.; Khanov, A.; Kharchilava, A.; Kharzheev, Y. N.; Kohli, J. M.; Kozelov, A. V.; Kraus, J.; Kulikov, S.; Kumar, A.; Kupco, A.; Kur?a, T.; Kuzmin, V. A.; Kvita, J.; Lammers, S.; Landsberg, G.; Lebrun, P.; Lee, H. S.; Lee, S. W.; Lee, W. M.; Lellouch, J.; Li, L.; Li, Q. Z.; Lietti, S. M.; Lim, J. K.; Lincoln, D.; Linnemann, J.; Lipaev, V. V.; Lipton, R.; Liu, Y.; Lobodenko, A.; Lokajicek, M.; Lopes de Sa, R.; Lubatti, H. J.; Luna-Garcia, R.; Lyon, A. L.; Maciel, A. K. A.; Mackin, D.; Madar, R.; Magańa-Villalba, R.; Malik, S.; Malyshev, V. L.; Maravin, Y.; Martínez-Ortega, J.; McCarthy, R.; McGivern, C. L.; Meijer, M. M.; Melnitchouk, A.; Menezes, D.; Mercadante, P. G.; Merkin, M.; Meyer, A.; Meyer, J.; Miconi, F.; Mondal, N. K.; Muanza, G. S.; Mulhearn, M.; Nagy, E.; Naimuddin, M.; Narain, M.; Nayyar, R.; Neal, H. A.; Negret, J. P.; Neustroev, P.; Novaes, S. F.; Nunnemann, T.; Obrant, G.; Orduna, J.; Osman, N.; Osta, J.; Otero y Garzón, G. J.; Padilla, M.; Pal, A.; Parashar, N.; Parihar, V.; Park, S. K.; Parsons, J.; Partridge, R.; Parua, N.; Patwa, A.; Penning, B.; Perfilov, M.; Peters, K.; Peters, Y.; Petridis, K.; Petrillo, G.; Pétroff, P.; Piegaia, R.; Pleier, M.-A.; Podesta-Lerma, P. L. M.; Podstavkov, V. M.; Polozov, P.; Popov, A. V.; Prewitt, M.; Price, D.; Prokopenko, N.; Protopopescu, S.; Qian, J.; Quadt, A.; Quinn, B.; Rangel, M. S.; Ranjan, K.; Ratoff, P. N.; Razumov, I.; Renkel, P.; Rijssenbeek, M.; Ripp-Baudot, I.; Rizatdinova, F.; Rominsky, M.; Ross, A.; Royon, C.; Rubinov, P.; Ruchti, R.; Safronov, G.; Sajot, G.; Salcido, P.; Sánchez-Hernández, A.; Sanders, M. P.; Sanghi, B.; Santos, A. S.; Savage, G.; Sawyer, L.; Scanlon, T.; Schamberger, R. D.; Scheglov, Y.; Schellman, H.; Schliephake, T.; Schlobohm, S.; Schwanenberger, C.; Schwienhorst, R.; Sekaric, J.; Severini, H.; Shabalina, E.; Shary, V.; Shchukin, A. A.; Shivpuri, R. K.; Simak, V.; Sirotenko, V.; Skubic, P.; Slattery, P.; Smirnov, D.; Smith, K. J.

2012-02-01T23:59:59.000Z

467

Budgets and behaviors of uranium and thorium series isotopes in the Santa Monica Basin off the California Coast  

SciTech Connect (OSTI)

Samples from three time-series sediment traps deployed in the Santa Monica Basin off the California coast were analyzed to study the flux and scavenging of uranium and thorium series isotopes. Variations of uranium and thorium series isotopes fluxes in the water column were obtained by integrating these time-series deployment results. Mass and radionuclide fluxes measured from bottom sediment traps compare favorably with fluxed determined from sediment core data. This agreement suggests that the near-bottom sediment traps are capable of collecting settling particles representative of the surface sediment. The phase distributions of {sup 234}Th in the water column were calculated by an inverse method using sediment trap data, which help to study the variations of {sup 234}Th scavenging in the water column. Scavenging and radioactive decay of {sup 234}Th are the two principal processes for balancing {sup 234}Th budget in the water column. The residence times of dissolved and particulate {sup 234}Th were determined by a {sup 234}Th scavenging model.

Yu, Lei

1991-12-16T23:59:59.000Z

468

Neutrinoless Double Beta Decay in Gauge Theories  

E-Print Network [OSTI]

Neutrinoless double beta decay is a very important process both from the particle and nuclear physics point of view. Its observation will severely constrain the existing models and signal that the neutrinos are massive Majorana particles. From the elementary particle point of view it pops up in almost every model. In addition to the traditional mechanisms, like the neutrino mass, the admixture of right handed currents etc, it may occur due to the R-parity violating supersymmetric (SUSY) interactions. From the nuclear physics point of view it is challenging, because: 1) The relevant nuclei have complicated nuclear structure. 2) The energetically allowed transitions are exhaust a small part of all the strength. 3) One must cope with the short distance behavior of the transition operators, especially when the intermediate particles are heavy (eg in SUSY models). Thus novel effects, like the double beta decay of pions in flight between nucleons, have to be considered. 4) The intermediate momenta involved are about 100 MeV. Thus one has to take into account possible momentum dependent terms in the nucleon current. We find that, for the mass mechanism, such modifications of the nucleon current for light neutrinos reduce the nuclear matrix elements by about 25 per cent, almost regardless of the nuclear model. In the case of heavy neutrinos the effect is much larger and model dependent. Taking the above effects into account, the available nuclear matrix elements for the experimentally interesting nuclei A = 76, 82, 96, 100, 116, 128, 130, 136 and 150 and the experimental limits on the life times we have extracted new stringent limits on the average neutrino mass and on the R-parity violating coupling for various SUSY models.

J. D. Vergados

1999-07-12T23:59:59.000Z

469

Constraining Mass Spectra with Sterile Neutrinos from Neutrinoless Double Beta Decay, Tritium Beta Decay and Cosmology  

E-Print Network [OSTI]

We analyze the constraints on neutrino mass spectra with extra sterile neutrinos as implied by the LSND experiment. The various mass related observables in neutrinoless double beta decay, tritium beta decay and cosmology are discussed. Both neutrino oscillation results as well as recent cosmological neutrino mass bounds are taken into account. We find that some of the allowed mass patterns are severely restricted by the current constraints, in particular by the cosmological constraints on the total sum of neutrino masses and by the non-maximality of the solar neutrino mixing angle. Furthermore, we estimate the form of the four neutrino mass matrices and also comment on the situation in scenarios with two additional sterile neutrinos.

Srubabati Goswami; Werner Rodejohann

2006-05-18T23:59:59.000Z

470

Constraining mass spectra with sterile neutrinos from neutrinoless double beta decay, tritium beta decay, and cosmology  

SciTech Connect (OSTI)

We analyze the constraints on neutrino mass spectra with extra sterile neutrinos as implied by the LSND experiment. The various mass related observables in neutrinoless double beta decay, tritium beta decay and cosmology are discussed. Both neutrino oscillation results as well as recent cosmological neutrino mass bounds are taken into account. We find that some of the allowed mass patterns are severely restricted by the current constraints, in particular, by the cosmological constraints on the total sum of neutrino masses and by the nonmaximality of the solar neutrino mixing angle. Furthermore, we estimate the form of the four neutrino mass matrices and also comment on the situation in scenarios with two additional sterile neutrinos.

Goswami, Srubabati [Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211 019 (India); Physik-Department, Technische Universitaet Muenchen, James-Franck-Strasse, D-85748 Garching (Germany); Rodejohann, Werner [Physik-Department, Technische Universitaet Muenchen, James-Franck-Strasse, D-85748 Garching (Germany)

2006-06-01T23:59:59.000Z

471

Complex-Energy Shell-Model Description of Alpha Decay  

SciTech Connect (OSTI)

In his pioneering work of alpha decay, Gamow assumed that the alpha particle formed inside the nucleus tunnels through the barrier of the alpha-daughter potential. The corresponding metastable state can be viewed as a complex-energy solution of the time-independent Schroedinger equation with the outgoing boundary condition. The formation of the alpha cluster, missing in the original Gamow formulation, can be described within the R-matrix theory in terms of the formation amplitude. In this work, the alpha decay process is described by computing the formation amplitude and barrier penetrability in a large complex-energy configuration space spanned by the complex-energy eigenstates of the finite Woods-Saxon (WS) potential. The proper normalization of the decay channel is essential as it strongly modifies the alpha-decay spectroscopic factor. The test calculations are carried out for the ^{212}Po alpha decay.

Id Betan, R. [Rosario Physics Institute, Rosario, Argentina] [Rosario Physics Institute, Rosario, Argentina; Nazarewicz, Witold [ORNL] [ORNL

2011-01-01T23:59:59.000Z

472

Dark radiation from particle decay: cosmological constraints and opportunities  

SciTech Connect (OSTI)

We study particle decay as the origin of dark radiation. After elaborating general properties and useful parametrisations we provide model-independent and easy-to-use constraints from nucleosynthesis, the cosmic microwave background and structure formation. Bounds on branching ratios and mass hierarchies depend in a unique way on the time of decay. We demonstrate their power to exclude well-motivated scenarios taking the example of the lightest ordinary sparticle decaying into the gravitino. We point out signatures and opportunities in cosmological observations and structure formation. For example, if there are two dark decay modes, dark radiation and the observed dark matter with adjustable free-streaming can originate from the same decaying particle, solving small-scale problems of structure formation. Hot dark matter mimicking a neutrino mass scale as deduced from cosmological observations can arise and possibly be distinguished after a discovery. Our results can be used as a guideline for model building.

Hasenkamp, Jasper; Kersten, Jörn, E-mail: Jasper.Hasenkamp@desy.de, E-mail: Joern.Kersten@desy.de [II. Institute for Theoretical Physics, University of Hamburg, 22761 Hamburg (Germany)

2013-08-01T23:59:59.000Z

473

Dark radiation from particle decay: cosmological constraints and opportunities  

E-Print Network [OSTI]

We study particle decay as the origin of dark radiation. After elaborating general properties and useful parametrisations we provide model-independent and easy-to-use constraints from nucleosynthesis, the cosmic microwave background and structure formation. Bounds on branching ratios and mass hierarchies depend in a unique way on the time of decay. We demonstrate their power to exclude well-motivated scenarios taking the example of the lightest ordinary sparticle decaying into the gravitino. We point out signatures and opportunities in cosmological observations and structure formation. For example, if there are two dark decay modes, dark radiation and the observed dark matter with adjustable free-streaming can originate from the same decaying particle, solving small-scale problems of structure formation. Hot dark matter mimicking a neutrino mass scale as deduced from cosmological observations can arise and possibly be distinguished after a discovery. Our results can be used as a guideline for model building.

Jasper Hasenkamp; Jörn Kersten

2014-02-13T23:59:59.000Z

474

Sterile Neutrinos in Neutrinoless Double Beta Decay: An Update  

E-Print Network [OSTI]

We revisit the mechanism of neutrinoless double beta (NLDBD) decay mediated by the exchange with the heavy Majorana neutrino N of arbitrary mass mN, slightly mixed with the electron neutrino. By assuming the dominance of this mechanism we update the well known NLDBD-decay exclusion plot in the mass-mixing angle plane taking into account recent progress in calculation of nuclear matrix elements within quasiparticle random phase approximation and improved experimental bounds on the NLDBD-decay half-life of Ge-76 and Xe-136. We also consider the known formula approximating the mN dependence of the NLDBD-decay nuclear matrix element in a simple explicit form. We analyze its accuracy and specify the corresponding parameters allowing one to easily calculate the NLDBD-decay half-life for arbitrary mN for all the experimentally interesting isotopes without resorting to real nuclear structure calculations.

Faessler, Amand; Kovalenko, Sergey; Simkovic, Fedor

2014-01-01T23:59:59.000Z

475

Arbitrary mass Majorana neutrinos in neutrinoless double beta decay  

E-Print Network [OSTI]

We revisit the mechanism of neutrinoless double beta (NLDBD) decay mediated by the exchange with the heavy Majorana neutrino N of arbitrary mass mN, slightly mixed with the electron neutrino. By assuming the dominance of this mechanism, we update the well-known NLDBD-decay exclusion plot in the mass-mixing angle plane taking into account recent progress in the calculation of nuclear matrix elements within quasiparticle random phase approximation and improved experimental bounds on the NLDBD-decay half-life of Ge-76 and Xe-136. We also consider the known formula approximating the mN dependence of the NLDBD-decay nuclear matrix element in a simple explicit form. We analyze its accuracy and specify the corresponding parameters, allowing one to easily calculate the NLDBD-decay half-life for arbitrary mN for all the experimentally interesting isotopes without resorting to real nuclear structure calculations.

Amand Faessler; Marcela Gonzalez; Sergey Kovalenko; Fedor Simkovic

2014-08-26T23:59:59.000Z

476

A search for two body muon decay signals  

E-Print Network [OSTI]

Lepton family number violation is tested by searching for $\\mu^+\\to e^+X^0$ decays among the 5.8$\\times 10^8$ positive muon decay events analyzed by the TWIST collaboration. Limits are set on the production of both massless and massive $X^0$ bosons. The large angular acceptance of this experiment allows limits to be placed on anisotropic $\\mu^+\\to e^+X^0$ decays, which can arise from interactions violating both lepton flavor and parity conservation. Branching ratio limits of order $10^{-5}$ are obtained for bosons with masses of 13 - 80 MeV/c$^2$ and with different decay asymmetries. For bosons with masses less than 13 MeV/c$^{2}$ the asymmetry dependence is much stronger and the 90% limit on the branching ratio varies up to $5.8 \\times 10^{-5}$. This is the first study that explicitly evaluates the limits for anisotropic two body muon decays.

R. Bayes; J. Bueno; Yu. I. Davydov; P. Depommier; W. Faszer; M. C. Fujiwara; C. A. Gagliardi; A. Gaponenko; D. R. Gill; A. Grossheim; P. Gumplinger; M. D. Hasinoff; R. S. Henderson; A. Hillairet; J. Hu; D. D. Koetke; R. P. MacDonald; G. M. Marshall; E. L. Mathie; R. E. Mischke; K. Olchanski; A. Olin; R. Openshaw; J. -M. Poutissou; R. Poutissou; V. Selivanov; G. Sheffer; B. Shin; T. D. S. Stanislaus; R. Tacik; R. E. Tribble

2015-03-10T23:59:59.000Z

477

The retention time of inorganic mercury in the brain — A systematic review of the evidence  

SciTech Connect (OSTI)

Reports from human case studies indicate a half-life for inorganic mercury in the brain in the order of years—contradicting older radioisotope studies that estimated half-lives in the order of weeks to months in duration. This study systematically reviews available evidence on the retention time of inorganic mercury in humans and primates to better understand this conflicting evidence. A broad search strategy was used to capture 16,539 abstracts on the Pubmed database. Abstracts were screened to include only study types containing relevant information. 131 studies of interest were identified. Only 1 primate study made a numeric estimate for the half-life of inorganic mercury (227–540 days). Eighteen human mercury poisoning cases were followed up long term including autopsy. Brain inorganic mercury concentrations at death were consistent with a half-life of several years or longer. 5 radionucleotide studies were found, one of which estimated head half-life (21 days). This estimate has sometimes been misinterpreted to be equivalent to brain half-life—which ignores several confounding factors including limited radioactive half-life and radioactive decay from surrounding tissues including circulating blood. No autopsy cohort study estimated a half-life for inorganic mercury, although some noted bioaccumulation of brain mercury with age. Modelling studies provided some extreme estimates (69 days vs 22 years). Estimates from modelling studies appear sensitive to model assumptions, however predications based on a long half-life (27.4 years) are consistent with autopsy findings. In summary, shorter estimates of half-life are not supported by evidence from animal studies, human case studies, or modelling studies based on appropriate assumptions. Evidence from such studies point to a half-life of inorganic mercury in human brains of several years to several decades. This finding carries important implications for pharmcokinetic modelling of mercury and potentially for the regulatory toxicology of mercury.

Rooney, James P.K., E-mail: jrooney@rcsi.ie

2014-02-01T23:59:59.000Z

478

Exploring the Neutrinoless Double Beta Decay in the Inverted Neutrino Hierarchy with Bolometric Detectors  

E-Print Network [OSTI]

Exploring the Neutrinoless Double Beta Decay in the InvertedC. Giunti, Neutrinoless double-beta decay. A brief review,el- ements for neutrinoless double-beta decay and double-

Artusa, D. R.

2014-01-01T23:59:59.000Z

479

First results on neutrinoless double beta decay of Te-130 with the calorimetric cuoricino experiment  

E-Print Network [OSTI]

Evidence for Neutrinoless Double Beta Decay” arXiv:hep-on “Evidence for neutrinoless double beta decay”- arXiv:hep-Results on Neutrinoless Double Beta Decay of 130 Te with the

2003-01-01T23:59:59.000Z

480

A q-PRODUCT TUTORIAL q-SERIES MAPLE PACKAGE  

E-Print Network [OSTI]

A q-PRODUCT TUTORIAL FOR A q-SERIES MAPLE PACKAGE FRANK GARVAN Abstract. This is a tutorial-series and q-products and finding algebraic relations between q-series. Andrews found an algorithm to effectively find finite q-product factorisations when they exist thus answering a question of Andrews. We

Garvan, Frank

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481

HEART SMART NUTRITION Mailout or E-mail Lesson Series  

E-Print Network [OSTI]

HEART SMART NUTRITION Mailout or E-mail Lesson Series MEMORANDUM TO : County Extension Agents Fellow, Professor and Extension Nutrition Specialist SUBJECT: Lesson Series Heart Smart Nutrition Heart. A county-wide Heart Smart seminar would also be another opportunity to sign up participants for the series

482

Univariate Modeling and Forecasting of Monthly Energy Demand Time Series  

E-Print Network [OSTI]

Univariate Modeling and Forecasting of Monthly Energy Demand Time Series Using Abductive and Neural demand time series based only on data for six years to forecast the demand for the seventh year. Both networks, Neural networks, Modeling, Forecasting, Energy demand, Time series forecasting, Power system

Abdel-Aal, Radwan E.

483

The Harmonic Series Diverges Again and Again Steven J. Kifowit  

E-Print Network [OSTI]

The Harmonic Series Diverges Again and Again Steven J. Kifowit Prairie State College Terra A. Stamps Prairie State College The harmonic series, n=1 1 n = 1 + 1 2 + 1 3 + 1 4 + 1 5 + · · · , is one, the harmonic series provides the instructor with a wealth of opportunities. The leaning tower of lire (Johnson

California at Santa Cruz, University of

484

Search for di-muon decays of a low-mass Higgs boson in radiative decays of the ?(1S)  

E-Print Network [OSTI]

We search for di-muon decays of a low-mass Higgs boson (A[superscript 0]) produced in radiative ?(1S) decays. The ?(1S) sample is selected by tagging the pion pair in the ?(2S,3S)??[superscript +]?[superscript -]?(1S) ...

Cowan, Ray Franklin

485

Evidence for a Higgs boson in tau decays with the CMS detector .  

E-Print Network [OSTI]

??In this thesis, I describe the search for a Higgs boson through its decay to a pair of tan leptons with the tau-pair subsequently decaying… (more)

Dutta, Valentina

2014-01-01T23:59:59.000Z

486

Radiative Decays of the B Meson  

SciTech Connect (OSTI)

The radiative decays of the B meson to the final states K *(892){gamma} and {rho}(770){gamma} proceed through virtual effective flavor-changing neutral current processes which are sensitive to contributions from high mass scales from within the Standard Model of particle interactions and from possible new physics. In the context of the Standard Model, these transitions are of interest in probing the weak interaction behavior of the top quark. In particular, the ratio of branching fractions for the two processes can be used to extract the ratio of Cabibbo-Kobayashi-Maskawa matrix elements |V{sub td}/V{sub ts}|. Potential new physics contributions in these virtual transitions may induce new sources of direct CP violation and enhancement or suppression of the rate of these processes. The B {yields} K*{gamma} is a manifestation of the b {yields} s{gamma} radiative transition. This process has been previously observed by the CLEO collaboration and its branching fraction measured. While the theoretical prediction for the inclusive rate of b {yields} s{gamma} transitions is more robust than that of the exclusive B {yields} K*{gamma}, the prospects for precise measurements of {Beta}[B {yields} K*{gamma}] and direct CP violation in this channel has attracted considerable attention. The analysis described here represents an improved measurement of the B {yields} K*{gamma} branching factions and a more sensitive search for direct CP violation. In 22.7 x 10{sup 6} B{bar B} events collected by the BABAR detector in 1999-2000, we measure: {Beta}[B{sup 0} {yields} K*{sup 0}{gamma}] = 4.23 {+-} 0.40(stat.) {+-} 0.22(syst.) x 10{sup -5} and {Beta}[B{sup +} {yields} K*{sup +}{gamma}] = 3.83 {+-} 0.62(stat.) {+-} 0.22(syst.) x 10{sup -5}. We find no evidence for direct CP violation in the decays and constrain -0.170 < A{sub CP} < 0.082 at 90% Confidence Level. The B {yields} {rho}{gamma} proceeds through the analogous b {yields} d{gamma} radiative transition. As such, its rate is suppressed by a factor of |V{sub td}/V{sub ts}|{sup 2} {approx} {Omicron}(50) relative to B {yields} K*{gamma} and remains unobserved. Current limits on the branching fractions of B {yields} {rho}{gamma} are still an order of magnitude above the theoretical predictions. While the uncertainty in the theoretical predictions for the branching fraction of this mode are large, it may be possible to reduce these uncertainties by considering the ratio of the branching fractions for B {yields} {rho}{gamma} and B {yields} K*{gamma} which would lead to a measurement of |V{sub td}/V{sub ts}|. The analysis presented here represents a search with nearly an order of magnitude more data and new analysis techniques. In a sample of 61 .7 x 10{sup 6} B{bar B} events, we find no significant evidence for the decay B {yields} {rho}{gamma} is and establish the following 90% Confidence Level upper limits on the branching fraction: {Beta}[B{sup 0} {yields} {rho}{sup 0}{gamma}] < 1.5 x 10{sup -6} and {Beta}[B{sup +} {yields} {rho}{sup +}{gamma}] < 2.8 x 10{sup -6}.

Tanaka, Hirohisa A

2003-09-23T23:59:59.000Z

487

The First Estimates of Kinematically Forbidden D Meson Decays  

E-Print Network [OSTI]

The weak hadronic decay D^+ -> K^0\\bar a_1^+ is kinematically forbidden at the peak mass values of the particles involved. However, occurrence of this decay has been reported with branching fraction (9.1 \\plusminus 1.8) \\cross 10^{-3} in the analysis of D^+ -> K^\\bar0 4 \\pi decay data. This is due to smearing effects on this decay caused mainly by the large width of a_1-resonance, which extends the phase space and allows this decay. Using a factorization model to evaluate decay amplitudes for external and internal W-emission diagrams, and incorporating Breit-Wigner smearing using the total a_1 width of 400 MeV, we obtain the first estimate for branching fraction of this decay to be 3.3 \\cross 10^{-3} and 7.0 \\cross 10^{-3}, for |V_1^{Da1} (0)|=0.40 and 1.50 respectively corresponding to different theoretical models, where |V_1^{Da1} (q^2)| is the vector form factor appearing in the D -> a_1 s-wave transition. The estimates are of the desired order of magnitude. We also predict branching fractions of its count...

Verma, R C; Odagiri, Kosuke

2015-01-01T23:59:59.000Z

488

Combined Scanning Transmission Electron Microscopy Tilt- and Focal Series  

SciTech Connect (OSTI)

In this study, a combined tilt- and focal series is proposed as a new recording scheme for high-angle annular dark-field scanning transmission electron microscopy (STEM) tomography. Three-dimensional (3D) data were acquired by mechanically tilting the specimen, and recording a through-focal series at each tilt direction. The sample was a whole-mount macrophage cell with embedded gold nanoparticles. The tilt focal algebraic reconstruction technique (TF-ART) is introduced as a new algorithm to reconstruct tomograms from such combined tilt- and focal series. The feasibility of TF-ART was demonstrated by 3D reconstruction of the experimental 3D data. The results were compared with a conventional STEM tilt series of a similar sample. The combined tilt- and focal series led to smaller missing wedge artifacts, and a higher axial resolution than obtained for the STEM tilt series, thus improving on one of the main issues of tilt series-based electron tomography.

Dahmen, Tim [German Research Center for Artificial Intelligence (DFKI), Germany] [German Research Center for Artificial Intelligence (DFKI), Germany; Baudoin, Jean-Pierre G [ORNL] [ORNL; Lupini, Andrew R [ORNL] [ORNL; Kubel, Christian [Karlsruhe Institute of Technology, Leopoldshafen, Germany] [Karlsruhe Institute of Technology, Leopoldshafen, Germany; Slusallek, Phillip [German Research Center for Artificial Intelligence (DFKI), Germany] [German Research Center for Artificial Intelligence (DFKI), Germany; De Jonge, Niels [ORNL] [ORNL

2014-01-01T23:59:59.000Z

489

Convergence and divergence of Fourier series  

E-Print Network [OSTI]

of Theorem 26, in euob gros@ of terse cormsgonaing to Q ~ f cs /~ Ie g substitute C ~ X for g ~ Vc bEIFQ e, series ~ Pt~ &J l~g' ~ ~ es before~ ecgi p~~ 4 ~ m ghenevey 'I gAgf' - &. &~j-c+& ~ 4 gA, k. . -- f, ZA~&g; The serums stiD. oonverges nnifon...myles"aqua~, c~pcpg apop CXQFtQSQ $2VXQ8 M 'eKISR) go eexPop cap. cog. e~~bax s~j go qu~g~ ~~ ~ ssxag go alloy ~c~s, ", pnr ~g~~y s~ ~ jacuzzi ~seps~g a~ oq. ~~ng l @amuse aa~gv ~u m~ ao ~~~ucTsa e &, so. , '3 '3 t &~% ~Q pQO ~EBS 0$ SQ...

Bryant, Jack Douglas

2012-06-07T23:59:59.000Z

490

Transportation Energy Futures Series: Vehicle Technology Deployment Pathways: An Examination of Timing and Investment Constraints  

SciTech Connect (OSTI)

Scenarios of new vehicle technology deployment serve various purposes; some will seek to establish plausibility. This report proposes two reality checks for scenarios: (1) implications of manufacturing constraints on timing of vehicle deployment and (2) investment decisions required to bring new vehicle technologies to market. An estimated timeline of 12 to more than 22 years from initial market introduction to saturation is supported by historical examples and based on the product development process. Researchers also consider the series of investment decisions to develop and build the vehicles and their associated fueling infrastructure. A proposed decision tree analysis structure could be used to systematically examine investors' decisions and the potential outcomes, including consideration of cash flow and return on investment. This method requires data or assumptions about capital cost, variable cost, revenue, timing, and probability of success/failure, and would result in a detailed consideration of the value proposition of large investments and long lead times. This is one of a series of reports produced as a result of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency effort to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.

Plotkin, S.; Stephens, T.; McManus, W.

2013-03-01T23:59:59.000Z

491

Need for Systematic Retrofit Analysis in Multifamily Buildings  

SciTech Connect (OSTI)

Multifamily housing offers high potential for energy savings through retrofits. A comprehensive energy audit with systematic evaluation of alternative energy measures is one of the key steps to realizing the full energy savings potential. However, this potential often remains unrealized when the selection of measures is (1) based on a one-size-fits-all approach originating from accustomed practices, (2) intended merely to meet code-compliance requirements, and/or (3) influenced by owner renter split incentive. In such cases, the benefits of comprehensive energy auditing are disregarded in view of the apparent difficulty in diagnosing multifamily buildings, evaluating alternative measures, and installing customized sets of measures. This paper highlights some of the barriers encountered in a multifamily housing retrofit project in Georgia and demonstrates the merits of systematic retrofit analysis by identifying opportunities for higher energy savings and improved comfort and indoor air quality that were missed in this project. The study uses a whole-building energy analysis conducted for a 10-unit, low-rise, multifamily building of a 110-unit apartment complex. The analysis projected a 24% energy savings from the measures installed in the building with a payback period of 10 years. Further analysis with a systematic evaluation of alternative measures showed that without compromising on the objectives of durability, livability, and appearance of the building, energy savings of up to 34% were achievable with a payback period of 7 years. The paper concludes by outlining recommendations that may benefit future retrofit projects by improving the audit process, streamlining tasks, and achieving higher energy savings.

Malhotra, Mini [ORNL; Im, Piljae [ORNL

2014-01-01T23:59:59.000Z

492

Sensitivity Increases for the TITAN Decay Spectroscopy Program  

E-Print Network [OSTI]

The TITAN facility at TRIUMF has recently initiated a program of performing decay spectroscopy measurements in an electron-beam ion-trap (EBIT). The unique environment of the EBIT provides backing-free storage of the radioactive ions, while guiding charged decay particles from the trap centre via the strong magnetic field. This measurement technique is able to provide a significant increase in detection sensitivity for photons which result from radioactive decay. A brief overview of this device is presented, along with methods of improving the signal-to-background ratio for photon detection by reducing Compton scattered events, and eliminating vibrational noise.

K. G. Leach; A. Lennarz; A. Grossheim; C. Andreoiu; J. Dilling; D. Frekers; M. Good; S. Seeraji

2014-10-30T23:59:59.000Z

493

T violation in radiative $\\beta$ decay and electric dipole moments  

E-Print Network [OSTI]

In radiative $\\beta$ decay, $T$ violation can be studied through a spin-independent $T$-odd correlation. We consider contributions to this correlation by beyond the standard model (BSM) sources of $T$-violation, arising above the electroweak scale. At the same time such sources, parametrized by dimension-6 operators, can induce electric dipole moments (EDMs). As a consequence, the manifestations of the $T$-odd BSM physics in radiative $\\beta$ decay and EDMs are not independent. Here we exploit this connection to show that current EDM bounds already strongly constrain the spin-independent $T$-odd correlation in radiative $\\beta$ decay.

Dekens, W G

2015-01-01T23:59:59.000Z

494

Improved bounds on SUSY accompanied neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double beta decay induced by light Majorana neutrino exchange between two decaying nucleons with squark/slepton exchange inside one and W exchange inside the other nucleon (so-called vector-scalar exchange) gives stringent limits on R-parity violating interactions. We have extended previous work by including the tensor contribution to the transition rate. We discuss the improved limits on trilinear \\Rp -MSSM couplings imposed by the current experimental limit on the $\\znbb$ decay half-life of $^{76}$Ge.

H. Päs; M. Hirsch; H. V. Klapdor-Kleingrothaus

1999-07-14T23:59:59.000Z

495

Majorons Without Majorana Masses and Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We explain excess events near the endpoints of the double beta decay spectra of several elements, using the neutrinoless emission of massless Goldstone bosons. Models with scalars carrying lepton number $-2$ are proposed for this purpose so that ordinary neutrinoless double beta decay is forbidden, and we can raise the scale of global symmetry breaking above the 10 keV scale needed for observable emission of conventional Majorons in double beta decay. The electron spectrum has a different shape, and the rate depends on different nuclear matrix elements, than for the emission of ordinary Majorons.

C. P. Burgess; J. M. Cline

1992-09-30T23:59:59.000Z

496

Neutrinoless Double Beta Decay and Physics Beyond the Standard Model  

E-Print Network [OSTI]

The various mechanisms for neutrinoless double beta decay in gauge theories are reviewed and the present experimental data is used to set limits on physics scenarios beyond the standard model. The positive indications for nonzero neutrino masses in various experiments such as those involving solar, atmospheric and accelerator neutrinos are discussed and it is pointed out how some neutrino mass textures consistent with all data can be tested by the ongoing double beta decay experiments. Finally, the outlook for observable neutrinoless double beta decay signal in grand unified theories is discussed.

Rabindra N. Mohapatra

1995-07-05T23:59:59.000Z

497

Searches for new physics in top decays at the LHC  

E-Print Network [OSTI]

The search for new physics in top quark decays at the LHC is reviewed in this paper. Results from ATLAS and CMS experiments on top quark decays within the Standard Model are presented together with the measurements of the W boson polarizations and the study of the structure of the Wtb vertex. As a natural step forward, the experimental status on measurements sensitive to top quark couplings to gauge bosons (\\gamma, Z, W and H) is reviewed as well as possible top quark decays Beyond the Standard Model (MSSM and FCNC).

A. Onofre

2012-12-31T23:59:59.000Z

498

Status and prospects of searches for neutrinoless double beta decay  

E-Print Network [OSTI]

The simultaneous beta decay of two neutrons in a nucleus without the emission of neutrinos (called neutrinoless double beta decay) is a lepton number violating process which is not allowed in the Standard Model of particle physics. More than a dozen experiments using different candidate isotopes and a variety of detection techniques are searching for this decay. Some (EXO-200, Kamland-Zen, GERDA) started to take data recently. EXO and Kamland-Zen have reported first limits of the half life $T_{1/2}^{0\

Bernhard Schwingenheuer

2012-10-28T23:59:59.000Z

499

Empirical Survey of Neutrinoless Double Beta Decay Matrix Elements  

E-Print Network [OSTI]

Neutrinoless double beta decay has been the subject of intensive theoretical work as it represents the only practical approach to discovering whether neutrinos are Majorana particles or not, and whether lepton number is a conserved quantum number. Available calculations of matrix elements and phase-space factors are reviewed from the perspective of a future large-scale experimental search for neutrinoless double beta decay. Somewhat unexpectedly, a uniform inverse correlation between phase space and the square of the nuclear matrix element emerges. As a consequence, no isotope is either favored or disfavored; all have qualitatively the same decay rate per unit mass for any given value of the Majorana mass.

R. G. H. Robertson

2013-01-07T23:59:59.000Z

500

Search for CP Violation in D± Meson Decays to ??±  

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

We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D±?K?K??± and the Cabibbo-favored decays D±s?K?K??± in the K?K? mass region of the ? resonance. Using 955 fb?ą of data collected with the Belle detector, we obtain AD?????CP=(+0.51±0.28±0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.

Stari?, M.; Aihara, H.; Arinstein, K.; Asner, D. M.; Aushev, T.; Bakich, A. M.; Bay, A.; Bhardwaj, V.; Bhuyan, B.; Bozek, A.; Bra?ko, M.; Browder, T. E.; Chen, A.; Chen, P.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, I.-S.; Cho, K.; Choi, Y.; Doležal, Z.; Drásal, Z.; Eidelman, S.; Fast, J. E.; Gaur, V.; Gabyshev, N.; Golob, B.; Haba, J.; Hayasaka, K.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y. B.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Iwashita, T.; Julius, T.; Kang, J. H.; Kawasaki, T.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kobayashi, N.; Koblitz, S.; Kodyš, P.; Korpar, S.; Križan, P.; Kumita, T.; Kwon, Y.-J.; Lange, J. S.; Lee, S.-H.; Li, J.; Li, Y.; Libby, J.; Liu, C.; Liu, Z. Q.; Louvot, R.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Nakano, E.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Nozaki, T.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlova, G.; Park, H. K.; Park, K. S.; Pestotnik, R.; Petri?, M.; Piilonen, L. E.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, K.; Sakai, Y.; Sanuki, T.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Seon, O.; Sevior, M. E.; Shebalin, V.; Shen, C. P.; Shibata, T.-A.; Shiu, J.-G.; Shwartz, B.; Simon, F.; Smerkol, P.; Sohn, Y.-S.; Sokolov, A.; Stani?, S.; Sumihama, M.; Sumisawa, K.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Vossen, A.; Wang, C. H.; Wang, M.-Z.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

2012-02-01T23:59:59.000Z