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dc.contributor.authorSirunyan, A. M.pt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2019-10-11T03:53:58Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0370-2693pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/200500pt_BR
dc.description.abstractThe production cross sections of BOs mesons and charge conjugates are measured in proton-proton (pp) and PbPb collisions via the exclusive decay channel B0s→J/ψφ→μ+μ−K+K at a center-of-mass energy of 5.02 TeV per nucleon pair and within the rapidity range|y|<2.4 using the CMS detector at the LHC. The pp measurement is performed as a function of transverse momentum (pT) of the B0s mesons in the range of 7 to 50 GeV/c and is compared to the predictions of perturbative QCD calculations. The B0s production yield in PbPb collisions is measured in two pT intervals, 7 to 15 and 15 to 50 GeV/c, and compared to the yield in pp collisions in the same kinematic region. The nuclear modification factor (RAA) is found to be 1.5±0.6(stat)±0.5(syst) for 7–15 GeV/c, and 0.87±0.30(stat)±0.17(syst) for 15–50 GeV/c, respectively. Within current uncertainties, the BOs results are consistent with models of strangeness enhancement, and suppression by parton energy loss, as observed for the B+ mesons.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysics letters. B. Amsterdam. Vol. 796 (Sep. 2019), p. 168-190pt_BR
dc.rightsOpen Accessen
dc.subjectPhysicsen
dc.subjectAceleradores de partículaspt_BR
dc.subjectQuark gluon plasmaen
dc.subjectColisao de ions pesadospt_BR
dc.subjectPlasma de quarks e gluonspt_BR
dc.subjectB mesonen
dc.subjectMésons Bpt_BR
dc.subjectOpen heavy-flavoren
dc.titleMeasurement of B0s meson production in pp and PbPb collisions at √sNN=5.02 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001103098pt_BR
dc.type.originEstrangeiropt_BR


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