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

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 84, no. 10, p. 2094-2099
Publication date2000
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)]%.

Citation (ISO format)
CDF Collaboration. Production of Υ(1S) Mesons from χ<sub>b</sub> Decays in <em>pp</em> Collisions at s√=1.8TeV. In: Physical review letters, 2000, vol. 84, n° 10, p. 2094–2099. doi: 10.1103/PhysRevLett.84.2094
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ISSN of the journal0031-9007
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