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Observation of the Bc+ Meson in Pb-Pb and pp Collisions at sNN =5.02 TeV and Measurement of its Nuclear Modification Factor

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dc.contributor.authorChadeeva, M.
dc.contributor.authorOskin, A.
dc.contributor.authorParygin, P.
dc.contributor.authorPopova, E.
dc.contributor.authorMatveev, V.
dc.contributor.authorBychkova, O.
dc.contributor.authorPolikarpov, S.
dc.contributor.authorЧадеева, Марина Валентиновна
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.contributor.authorПоликарпов, Сергей Михайлович
dc.date.accessioned2024-12-25T07:36:35Z
dc.date.available2024-12-25T07:36:35Z
dc.date.issued2022
dc.description.abstractThe Bc+ meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the Bc+ meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center-of-mass energy per nucleon pair of sNN=5.02 TeV, via the Bc+→(J/ψ→μ+μ-)μ+νμ decay. The Bc+ nuclear modification factor, derived from the Pb-Pb-to-pp ratio of production cross sections, is measured in two bins of the trimuon transverse momentum and of the Pb-Pb collision centrality. The Bc+ meson is shown to be less suppressed than quarkonia and most of the open heavy-flavor mesons, suggesting that effects of the hot and dense nuclear matter created in heavy ion collisions contribute to its production. This measurement sets forth a promising new probe of the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma. © 2022 CERN.
dc.identifier.citationObservation of the Bc+ Meson in Pb-Pb and pp Collisions at sNN =5.02 TeV and Measurement of its Nuclear Modification Factor / Tumasyan, A. [et al.] // Physical Review Letters. - 2022. - 128. - № 25. - 10.1103/PhysRevLett.128.252301
dc.identifier.doi10.1103/PhysRevLett.128.252301
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevLett.128.252301
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85134350004&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/27328
dc.relation.ispartofPhysical Review Letters
dc.titleObservation of the Bc+ Meson in Pb-Pb and pp Collisions at sNN =5.02 TeV and Measurement of its Nuclear Modification Factor
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue25
oaire.citation.volume128
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