Production of Υ(1S) Mesons from χ<sub>b</sub> Decays in <em>pp</em> Collisions at s√=1.8TeV

CDF Collaboration

doi:10.1103/PhysRevLett.84.2094

Scientific article

English

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

ContributorsCDF Collaboration

CollaboratorsClark, Allan Geoffrey; Kambara, Hisanori; Speer, Thomas; Strumia Michelini, Federica; Wu, Xin

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)]%.

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

CDF Collaboration. Production of Υ(1S) Mesons from χ_b Decays in pp Collisions at s√=1.8TeV. In: Physical review letters, 2000, vol. 84, n° 10, p. 2094–2099. doi: 10.1103/PhysRevLett.84.2094

Article (Published version)

Identifiers

PID : unige:37877
DOI : 10.1103/PhysRevLett.84.2094

Additional URL for this publicationhttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.84.2094

Journal ISSN0031-9007

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Update14/03/2023 21:21:36

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

Technical informations

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