Observation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at √SNN=5.02 TeV

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dc.authoridLevchuk, Leonid/0000-0001-5889-7410
dc.authoridRedondo, Ignacio/0000-0003-3737-4121
dc.authoridSarkar, Tanmay/0000-0003-0582-4167
dc.authoridBenato, Lisa/0000-0001-5135-7489
dc.authoridGallinaro, Michele/0000-0003-1261-2277
dc.authoridTully, Christopher/0000-0001-6771-2174
dc.authoridDozen, Candan/0000-0002-4301-634X
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorEro, J.
dc.contributor.authorDel Valle, A. Escalante
dc.date.accessioned2025-03-23T19:38:39Z
dc.date.available2025-03-23T19:38:39Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractThe B-s(0) and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity of 1.7 nb(-1). The mesons are reconstructed in the exclusive decay channels B-s(0) -> J/psi (mu(+)mu(-))phi(K+K-) and B+ -> J/psi(mu(+)mu(-))K+ in the transverse momentum range 7-50 GeV/c and absolute rapidity 0-2.4. The B-s(0) meson is observed with a statistical significance in excess of five standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio of production yields of B-s(0) and B+ is measured and compared to theoretical models that include quark recombination effects. (C) 2022 The Author(s). Published by Elsevier B.V.
dc.description.sponsorshipBMBWF (Austria); FWF (Austria); FNRS
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid and other centres for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMS detector, and the supporting computing infrastructure provided by the following funding agencies: BMBWF and FWF (Austria); FNRS the determination of the uncertainties related to data/MC comparisons, an identical procedure to that used for the production yield is employed, but utilizing only tracking related variables, using the B+ channel. The dominant uncertainty arises from data/MC agreement and the limited MC sample size. The Rratio results are shown in Fig. 3as functions of the mesons' pT(upper) and event centrality (lower).
dc.identifier.doi10.1016/j.physletb.2022.137062
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.scopus2-s2.0-85129387077
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2022.137062
dc.identifier.urihttps://hdl.handle.net/11486/6177
dc.identifier.volume829
dc.identifier.wosWOS:000821534900017
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysics Letters B
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectCMS
dc.subjectQuark gluon plasma
dc.subjectHeavy flavor
dc.subjectB mesons
dc.subjectHadronization
dc.titleObservation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at √SNN=5.02 TeV
dc.typeArticle

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