Measurement of B0s meson production in pp and PbPb collisions at √sNN=5.02 TeV
dc.contributor.author | Sirunyan, A. M. | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2019-10-11T03:53:58Z | pt_BR |
dc.date.issued | 2019 | pt_BR |
dc.identifier.issn | 0370-2693 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/200500 | pt_BR |
dc.description.abstract | The 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.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physics letters. B. Amsterdam. Vol. 796 (Sep. 2019), p. 168-190 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Physics | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Quark gluon plasma | en |
dc.subject | Colisao de ions pesados | pt_BR |
dc.subject | Plasma de quarks e gluons | pt_BR |
dc.subject | B meson | en |
dc.subject | Mésons B | pt_BR |
dc.subject | Open heavy-flavor | en |
dc.title | Measurement of B0s meson production in pp and PbPb collisions at √sNN=5.02 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001103098 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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