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Charm D Production In Ee Annihilation At 29 Gev
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Book Synopsis Charm D Production in Ee− Annihilation at 29 GeV. by :
Download or read book Charm D Production in Ee− Annihilation at 29 GeV. written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented on the analysis of charm D Production from 300 pb−1 of data taken with the HRS Detector at PEP. The electroweak asymmetry is -8.4 +- 3.6% and R (D + D*) = 1.57 +- 0.17. Fragmentation functions for D°, D, D* production and the results of a search for the D** are given. 10 refs., 9 figs.
Book Synopsis Recent Results on Open and Hidden Charm Production in Ee− Annihilation at 29 GeV. by :
Download or read book Recent Results on Open and Hidden Charm Production in Ee− Annihilation at 29 GeV. written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Inclusive)psi) production in ee/sup)minus/) annihilation at 29 GeV has been measured with the Mark II detector. The)psi) cross section is found to be 1.1)+- ) 0.5)+- ) 0.4 pb. An upper limit of 0.02 sigma/sub .mu mu./ is obtained for other sources of)psi) production.)eta) production has also been investigated, using the .gamma gamma. decay mode. The)eta) fragmentation function has been measured and found to be in good agreement with the Lund model prediction.)eta)' production has been measured for the first time in high energy ee/sup)minus/) annihilation. A search for D/sub s//sup)+-/) decays into)eta) .pi./sup)+-/) and)eta)' .pi./sup)+-/) has been performed and evidence has been found for both decay modes at the 3 sigma level. 11 refs., 5 figs.
Book Synopsis Hadron Production in Ee− Annihilation at 29 GeV. by :
Download or read book Hadron Production in Ee− Annihilation at 29 GeV. written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from HRS on the production of scalar, tensor, and charm mesons and of strange and charm baryons in ee− annihilation are presented. The production of f0(975), f2(1270), and K2*(1430) is shown briefly. The decays of D*(2010) and D*(2007)° are studied in detail. The production of .xi.− and .sigma.(1385)/sup + -/ is mentioned. Finally, the preliminary analyses of .lambda./sub c/ and .sigma./sub c//sup 0,++/ productions are presented.
Book Synopsis Charm Production in E E Annihilation by :
Download or read book Charm Production in E E Annihilation written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The cross sections for charm production in continuum e e annihilation near 10 GeV and near 30 GeV are presented. With the latest values for the D-mesons decay branching ratios, about 70% of the charm quarks end up in the D or D/sup +-/ mesons. There is no evidence for a charm deficit. The relative production of the vector and pseudoscalar mesons is in accord with the expectations of spin counting. Measurements of the D* decay angular distribution show that the vector mesons are primarily produced with equal populations in all helicity states, although there is some evidence for D* alignment for the highest D* momenta in the 10 GeV data. 13 refs., 4 figs., 1 tab.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Single-photon Production in Ee− Annihilation at 29 GeV Center-of-mass Energy by : Christopher Hearty
Download or read book Search for Single-photon Production in Ee− Annihilation at 29 GeV Center-of-mass Energy written by Christopher Hearty and published by . This book was released on 1987 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inclusive D0 Production in E+e Annihilation at 29 GeV by : Raymond Eugene Van Tyen
Download or read book Inclusive D0 Production in E+e Annihilation at 29 GeV written by Raymond Eugene Van Tyen and published by . This book was released on 1989 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties of D* Production in Ee− Annihilation at 29 GeV. by :
Download or read book Properties of D* Production in Ee− Annihilation at 29 GeV. written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: D* production is studied in the decay chain D* .-->. D° .pi. with the D° observed in the K−.pi.+ mode and the corresponding charge conjugate decays. The results were obtained from a preliminary analysis of an 80 pb−1 data sample of e+e− annihilations at 29 GeV taken with the High Resolution Spectrometer at PEP. The excellent mass resolution of the HRS allows the study of the D* production and decay with very low background. We present the fragmentation function over the range of Z from 0.2 to 1.0.
Book Synopsis D Meson Production in E+e− Annihilation by : Petros-Afentoulis Rapidis
Download or read book D Meson Production in E+e− Annihilation written by Petros-Afentoulis Rapidis and published by . This book was released on 1979 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties of Heavy Quark Jets Produced by Ee− Annihilation at 29 GeV. by :
Download or read book Properties of Heavy Quark Jets Produced by Ee− Annihilation at 29 GeV. written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mark II detector in the ee− storage ring PEP at the Stanford Liner Accelerator Center (SLAC) is used to measure selected properties of hadronic events corresponding to produced bottom or charm quarks. Heavy flavor enrichment is accomplished by tagging events with prompt electrons or muons. Differences between bottom, charm and average jets are observed for momentum, transverse momentum, rapidity and jet mass distributions. A detailed study of the charged multiplicity of b- and c-enriched events finds the mean multiplicity of bottom and charm events to be 16.2 +- 0.5 +- 1.0 and 13.2 +- 0.5 +- 0.9, respectively, where the first error is statistical and the second is systematic. The corresponding 'non-leading' multiplicities of charged particles accompanying the pair of heavy hadrons are 5.2 +- 0.5 +- 0.9 for bottom, and 8.0 +- 0.5 +- 0.9 for charm. We find from these non-leading multiplicities that bottom and charm hadrons fragment with mean energy fractions of z/sub b/ = 0.79/sub -0.05//sup +0.10/ and z/sub c/ = 0.60/sub -0.11//sup +0.09/. These results confirm the expected hard fragmentation of heavy quarks and agree with previous measurements based on leptonic inclusive spectra and D* fragmentation. 48 refs., 29 figs.
Book Synopsis Lambda Production in Electron-positron Annihilation at 29 GeV by : Andrew Robert Baden
Download or read book Lambda Production in Electron-positron Annihilation at 29 GeV written by Andrew Robert Baden and published by . This book was released on 1986 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inclusive Hadron Production and Two Particle Correlations in Ee− Annihilation at 29 GeV Center-of-mass Energy by :
Download or read book Inclusive Hadron Production and Two Particle Correlations in Ee− Annihilation at 29 GeV Center-of-mass Energy written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied hadron production in ee− annihilation at 29 GeV center-of-mass energy using the PEP-4 Time Projection Chamber Detector. The inclusive cross sections and mean multiplicities for .pi./sup + -/, K/sup + -/ and (p + anti p) production have been measured using ionization energy loss to separate particle species. We find on average 10.7 +- 0.6 .pi./sup + -/, 1.35 +- 13 K/sup + -/ and 0.60 +- 0.08 (p + anti p) per multihadron event. The differential cross section is well described by a number of Monte Carlo hadronization models. In addition, we have observed correlations in rapidity space for identified pions and kaons. Short-range KK correlations provide evidence for local flavor compensation during hadronization. Long-range .pi pi. and KK correlations indicate that the initial partons carry flavor. We also observe significant long-range .pi. K correlations as a result of heavy quark decays. 85 references, 67 figures, 11 tables.
Download or read book High Energy Physics Index written by and published by . This book was released on 1992 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the International Europhysics Conference on High-Energy Physics, Bari, Italy, 18-24 July 1985 by : L. Nitti
Download or read book Proceedings of the International Europhysics Conference on High-Energy Physics, Bari, Italy, 18-24 July 1985 written by L. Nitti and published by . This book was released on 1985 with total page 1222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics in Collision 6 by : M. Derrick
Download or read book Physics in Collision 6 written by M. Derrick and published by World Scientific Publishing Company. This book was released on 1987 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
