Inclusive Production of Strange and Vector Mesons in Ee± Annihilation at 29 GeV PDF Download
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Author: Heidi Marie Schellman
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Category :
Languages : en
Pages : 210
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Author: Heidi Marie Schellman
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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Book Description
Author:
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Category :
Languages : en
Pages :
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The Mark II detector is used to measure the inclusive production rates for K°, K/sup + -/, rho°, K*° and K*/sup + -/ in a sample of 59,489 hadronic events produced in ee− annihilation at 29 GeV. The inclusive rates for rho° and K*° + anti K*° production for momenta greater than 1 GeV/c are found to be 0.44 +- 0.04 +- 0.06 per event and 0.42 +- 0.05 +- 0.08 per event respectively. The rate for K*/sup + -/ production for momenta greater than 2 GeV/c is found to be 0.26 +- 0.05 +- 0.06 per event. The rate for K° + anti K° production over the full momentum range is found to be 1.27 + 0.03 +- 0.15 per event. The differential production rates for K°, rho° and K*/sup + -/ are, in addition, determined as a function of the particle energy. The inclusive rate for K/sup + -/ is also measured for K/sup + -/ momenta less than 900 MeV/c and is found to be 1.31 +- 0.09 +- 0.19 times the K° + anti K° rate in the same momentum region. These production rates are used to determine the particle content of hadronic events at 29 GeV and are compared to the rates predicted by theoretical models of parton fragmentation. 31 references.
Author: Heidi Marie Schellman
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Category :
Languages : en
Pages : 222
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Author:
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Languages : en
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This thesis describes the measurement of multiplicities and differential cross-sections of the [rho]°, K*°, and [phi] in ee− annihilation at .sqrt.s = 29 GeV, using data collected by the TPC/2.gamma. Detector Facility at PEP. The number of vector mesons per event is determined to be N(/rho/°) = 0.77 +- 0.08 +- 0.15, N(K*° + /bar K/*°) = 0.58 +- 0.05 +- 0.11, and N(/phi/) = 0.076 +- 0.010 +- 0.012. These multiplicities are used to find that the ratio of strange quarks to up quarks produced in the hadronization process is 0.30 +- 0.07, and that the ratio of light vector mesons to all light mesons produced in the hadronization process is 0.45 +- 0.08. All results agree with previous measurements. Measurements are compared with predictions of the Lund and Webber hadronization models, neither model is particularly favored nor disfavored. 60 refs., 32 figs., 24 tabs.
Author: Steven Oscar Melnikoff
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Category : Hadron interactions
Languages : en
Pages : 244
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Languages : en
Pages :
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Recent results on particle production in ee− annihilation at 29 GeV are reviewed. The data were obtained using the High Resolution Spectrometer at PEP and correspond to an integrated luminosity of 300 pb−1. The mean charged particle multiplicity in gluon jets from the three-jet events is found not to differ from that measured for quark jets. The production of the scalar meson S(975) and the tensor mesons f°(1270) and K*(1430) are observed and the rates are compared to the previously observed vector mesons, rho and K*(890). Finally, some of the global properties of charged particle production are presented and compared with similar results from soft hadronic collisions. 16 refs., 7 figs.
Author: Petros-Afentoulis Rapidis
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Category : Annihilation reactions
Languages : en
Pages : 228
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![Inclusive Production of Vector Mesons in E+e± Annihilation at [square Root Sign] S PDF](https://books.google.com/books/content/images/frontcover/fClPAQAAMAAJ?fife=w80-h100)
Author: Timothy Kent Edberg
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Category : Annihilation reactions
Languages : en
Pages : 364
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Author: Deutsches Elektronen-Synchrotron Hamburg
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Languages : de
Pages :
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![Inclusive production of vector mesons p° [p] and K*± [K] in e+e- [ee] annihilation at √s PDF](https://books.google.com/books/content/images/frontcover/KRvVzQEACAAJ?fife=w80-h100)
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Languages : de
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