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Production of Υ(1S) Mesons from χb Decays in pp Collisions at s√=1.8TeV

CollaborationWith : Clark, Allan Geoffrey / Kambara, Hisanori / Speer, Thomas / Strumia Michelini, Federica / Wu, Xin
Published in Physical Review Letters. 2000, vol. 84, no. 10, p. 2094-2099
Abstract We have reconstructed the radiative decays χb(1P)→Υ(1S)γ and χb(2P)→Υ(1S)γ in pp¯ collisions at s√=1.8TeV, and measured the fraction of Υ(1S) mesons that originate from these decays. For Υ(1S) mesons with pΥT>8.0GeV/c, the fractions that come from χb(1P) and χb(2P) decays are [27.1±6.9(stat)±4.4(syst)]% and [10.5±4.4(stat)±1.4(syst)]%, respectively. We have derived the fraction of directly produced Υ(1S) mesons to be [50.9±8.2(stat)±9.0(syst)]%.
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CDF COLLABORATION. Production of Υ(1S) Mesons from χb Decays in pp Collisions at s√=1.8TeV. In: Physical Review Letters, 2000, vol. 84, n° 10, p. 2094-2099. https://archive-ouverte.unige.ch/unige:37877

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Deposited on : 2014-06-17

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