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Title

Measurement of B0s meson production in pp and PbPb collisions at √s = 5.02 TeV

AuthorsSirunyan, A. M.; Cabrillo, I. J. ; Calderon, Alicia ; Chazin Quero, B.; Duarte Campderros, J. ; Fernández, M. ; Fernández-Manteca, Pedro; García Alonso, A.; García-Ferrero, J. ; Gómez, G. ; López Virto, A. ; Marco, Jesús ; Martínez-Rivero, Celso ; Martínez Ruiz del Arbol, P. ; Matorras, Francisco ; Piedra, Jonatan ; Prieels, C.; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Trevisani, N. ; Vila, Iván ; Vilar, Rocío
KeywordsPhysics
Quark gluon plasma
B meson
Open heavy-flavor
Issue Date2019
PublisherElsevier
CitationPhysics Letters B 796: 168-190 (2019)
AbstractThe production cross sections of B0s mesons and charge conjugates are measured in proton-proton (pp) and PbPb collisions via the exclusive decay channel B0s →J/ψϕ→μμKK 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 (p) 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 p 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 (R) 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 B0s results are consistent with models of strangeness enhancement, and suppression by parton energy loss, as observed for the B0s mesons.
DescriptionCMS Collaboration: et al.
Publisher version (URL)https://doi.org/10.1016/j.physletb.2019.07.014
URIhttp://hdl.handle.net/10261/213308
Identifiersdoi: 10.1016/j.physletb.2019.07.014
issn: 0370-2693
e-issn: 1873-2445
Appears in Collections:(IFCA) Artículos
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