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Properties Of Heavy Quark Jets Produced By E E Annihilation At 29 Gev
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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 Properties of Heavy Quark Jets Produced by E+e± Annihilation at 29 GeV by : Peter Cavanagh Rowson
Download or read book Properties of Heavy Quark Jets Produced by E+e± Annihilation at 29 GeV written by Peter Cavanagh Rowson and published by . This book was released on 1985 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties of Jets in High-E written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of jets in high-E/sub tau/ events produced in pp collisions at .sqrt.s = 63 GeV have been studied at the CERN Intersecting Storage Rings. The fragmentation of the jets is found to be similar to that of jets produced in ee− annihilation. The jets are wider than calculated from a constituent scattering model with no hard bremsstrahlung component. The charge correlations of positive and negative particles show differences consistent with expectation from valence-quark scattering. 11 references.
Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Quark Fragmentation at 29 GeV. by :
Download or read book Study of Quark Fragmentation 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: The study of multi-particle final state in high-energy reactions has a long history. Detailed studies of hadronic interactions at Fermilab and at the CERN ISR have shown that particles are emitted in clear jets of hadrons along the beam directions. For the highest energies, a small fraction of events contains large-angle jets originating from hard collisions, in addition to the beam and target fragmentation products. The clearest observation of jets has been in high-energy ee− reactions. Hadronic interactions contain 5 or 6 valence quarks already in the initial state. The final state in ee− annihilation represents at the parton level a relatively simple dynamical system: a q anti q state plus possibly a hard gluon therefore jets produced in e+e− annihilation have to be considered as the cleanest ones. The study of their properties can help, not only to understand quark fragmentation but may also serve as an important tool in the analysis of the much more complex mechanism in hadronic interactions. In this paper we present preliminary results of the overall features of our first sample of e+e− annihilation events at 29 GeV. The data were taken using the High Resolution Spectrometer (HRS) operated at the PEP storage ring at the Stanford Linear Accelerator Center.
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 Study of Quark Fragmentation in Ee− Annihilation at 29 GeV by :
Download or read book Study of Quark Fragmentation in 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: This paper presents the charged particle multiplicity distributions for ee− annihilation at .sqrt.s = 29 GeV measured in the High Resolution Spectrometer. The data, which correspond to an integrated luminosity of 185 pb−1, were obtained at the ee− storage ring PEP. The techniques used to obtain the original distributions from the observed prong numbers are discussed. The multiplicity distribution of the charged particles with a two jet selection has a mean value Nch = 13.02 +- 0.03 +- 0.5; and a dispersion D = 3.84 +- 0.02 +- 0.1. The mean multiplicity increases with the event sphericity. No correlation is observed between the multiplicities in the two jets that characterize most of the events. For the single jets a value of D = 2.71 +- 0.02 +- 0.06 is measured which gives further support the idea of independent jet fragmentation. When compared with e+e− data at other energies, the multiplicity distributions exhibit the scaling behavior in the mean first suggested by Koba, Nielsen and Olsen (KNO). The KNO distribution in the central rapidity interval is broader than that for the whole rapidity span and agrees well with the generalized Bose-Einstein formula for three independent sources. 17 refs., 14 figs.
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 Inclusive Electron Production from Heavy Quarks with the TASSO Lead-liquid Argon Calorimeters in E+ E− Annihilation at PETRA by : Eric John Wicklund
Download or read book Inclusive Electron Production from Heavy Quarks with the TASSO Lead-liquid Argon Calorimeters in E+ E− Annihilation at PETRA written by Eric John Wicklund and published by . This book was released on 1984 with total page 248 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 1992 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pion and Kaon Multiplicities in Heavy Quark Jets from E+e ̄annihilation at 29 GeV by : TPC/Two Gamma Collaboration
Download or read book Pion and Kaon Multiplicities in Heavy Quark Jets from E+e ̄annihilation at 29 GeV written by TPC/Two Gamma Collaboration and published by . This book was released on 1986 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quark Fragmentation in E+e- Annihilation at 29 GeV by : Gregory John Baranko
Download or read book Quark Fragmentation in E+e- Annihilation at 29 GeV written by Gregory John Baranko and published by . This book was released on 1983 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Jet properties in e_1hn+e_1hn_346 annihilation [ee annihilation] at the center of mass energies between 14 and 44 GeV by : Krzysztof Genser
Download or read book Jet properties in e_1hn+e_1hn_346 annihilation [ee annihilation] at the center of mass energies between 14 and 44 GeV written by Krzysztof Genser and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Hadronization Using Energy Flow from E+e− Annihilation Into Quarks and Gluons at [square Root]s of 29 GeV by : Leslie J. Rosenberg
Download or read book A Study of Hadronization Using Energy Flow from E+e− Annihilation Into Quarks and Gluons at [square Root]s of 29 GeV written by Leslie J. Rosenberg and published by . This book was released on 1985 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties of charm jets produced in e- annihilation near 34 GeV by :
Download or read book Properties of charm jets produced in e- annihilation near 34 GeV written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties of Charm Jets Produced in E+e- Annihilation Near 34 GeV by : TASSO Collaboration
Download or read book Properties of Charm Jets Produced in E+e- Annihilation Near 34 GeV written by TASSO Collaboration and published by . This book was released on 1983 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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