Observation of B0 s mesons and measurement of the B0 s /B+ yield ratio in PbPb collisions at √snn = 5.02 TeV
dc.contributor.author | Tumasyan, A. | |
dc.contributor.author | Işıldak, Bora | |
dc.date.accessioned | 2023-09-13T05:42:54Z | |
dc.date.available | 2023-09-13T05:42:54Z | |
dc.date.issued | 2022-06-10 | |
dc.identifier.issn | 0370-2693 | en_US |
dc.identifier.uri | http://hdl.handle.net/10679/8807 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0370269322001964 | |
dc.description.abstract | The Bs 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→s0J/ψ(μ+μ−)ϕ(K+K−) and B→+J/ψ(μ+μ−)K+, in the transverse momentum range 7–50 GeV/c and absolute rapidity 0–2.4. The Bs 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 Bs 0 and B+ is measured and compared to theoretical models that include quark recombination effects. | en_US |
dc.description.sponsorship | 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.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.ispartof | Physics Letters B | |
dc.rights | Attribution 4.0 International | * |
dc.rights | openAccess | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.title | Observation of B0 s mesons and measurement of the B0 s /B+ yield ratio in PbPb collisions at √snn = 5.02 TeV | en_US |
dc.type | Article | en_US |
dc.description.version | Publisher version | en_US |
dc.peerreviewed | yes | en_US |
dc.publicationstatus | Published | en_US |
dc.contributor.department | Özyeğin University | |
dc.contributor.authorID | (ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora | |
dc.contributor.ozuauthor | Işıldak, Bora | |
dc.creator | The CMS Collaboration | |
dc.identifier.volume | 829 | en_US |
dc.identifier.wos | WOS:000821534900017 | |
dc.identifier.doi | 10.1016/j.physletb.2022.137062 | en_US |
dc.subject.keywords | B mesons | en_US |
dc.subject.keywords | CMS | en_US |
dc.subject.keywords | Hadronization | en_US |
dc.subject.keywords | Heavy flavor | en_US |
dc.subject.keywords | Quark gluon plasma | en_US |
dc.identifier.scopus | SCOPUS:2-s2.0-85129387077 | |
dc.relation.publicationcategory | Article - International Refereed Journal - Institutional Academic Staff |
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