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

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.authorÖzok, Ferhat
dc.date.accessioned2025-01-09T20:12:03Z
dc.date.available2025-01-09T20:12:03Z
dc.date.issued2022
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2022.137062
dc.identifier.urihttps://hdl.handle.net/20.500.14124/8301
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.en_US
dc.description.sponsorshipBMBWF (Austria); FWF (Austria); FNRSen_US
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).en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.ispartofPhysics Letters Ben_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCMSen_US
dc.subjectQuark gluon plasmaen_US
dc.subjectHeavy flavoren_US
dc.subjectB mesonsen_US
dc.subjectHadronizationen_US
dc.titleObservation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at ?SNN=5.02 TeVen_US
dc.typearticleen_US
dc.authorid0000-0001-9630-7362
dc.departmentFakülteler, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.institutionauthorÖzok, Ferhat
dc.identifier.doi10.1016/j.physletb.2022.137062
dc.identifier.volume829en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.wosqualityQ1
dc.identifier.wosWOS:000821534900017
dc.identifier.scopus2-s2.0-85129387077
dc.identifier.scopusqualityQ1
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.snmzKA_20250105


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