Observation of the B+c meson in Pb-Pb and pp collisions at √sNN = 5.02 TeV and measurement of its nuclear modification factor
dc.contributor.author | Tumasyan, Armen | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | Bernardes, César Augusto | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2022-10-03T04:48:51Z | pt_BR |
dc.date.issued | 2022 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/249590 | pt_BR |
dc.description.abstract | The B+c meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B+c 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 B+c → (J/ψ→μ+μ−)μ+νμ decay. The B+c 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 B+c 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. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Melville. Vol. 128, no. 25 (June 2022), 252301, 19 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.subject | Colisao de ions pesados | pt_BR |
dc.subject | Mesons | pt_BR |
dc.title | Observation of the B+c meson in Pb-Pb and pp collisions at √sNN = 5.02 TeV and measurement of its nuclear modification factor | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001147235 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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