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oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/126692026-10-18T20:27:32Zopenairedrivercom_ebyu_10000col_ebyu_10001

Observation of the Bc+ Meson in Pb-Pb and pp Collisions at sNN =5.02 TeV and Measurement of its Nuclear Modification FactorTumasyan, A.Adam, W.Andrejkovic, J.W.Bergauer, T.Chatterjee, S.Dragicevic, M.Del Valle, A. EscalanteFrühwirth, R.Jeitler, M.Krammer, N.Lechner, L.Liko, D.Mikulec, I.Paulitsch, P.Pitters, F.M.Schieck, J.Schöfbeck, R.Schwarz, D.Templ, S.Waltenberger, W.Wulz, C.-E.Chekhovsky, V.Litomin, A.Makarenko, V.Darwish, M.R.De Wolf, E.A.Janssen, T.Kello, T.Lelek, A.Sfar, H. RejebVan Mechelen, P.Van Putte, S.Van Remortel, N.Blekman, F.Bols, E.S.D’Hondt, J.Delcourt, M.Faham, H. ElLowette, S.Moortgat, S.Morton, A.Müller, D.Sahasransu, A.R.Tavernier, S.Van Doninck, W.Van Mulders, P.Beghin, D.Bilin, B.Clerbaux, B.De Lentdecker, G.Binary alloysBosonsColliding beam acceleratorsHadronsIon sourcesLead alloysNitrogen compoundsA-centerCenter-of-mass energiesCentre-of-mass energiesCMS detectorsHeavy flavoursHeavy-ion collisionsMeasurements ofNuclear modification factorsProduction cross sectionProton proton collisionsHeavy ionsThe 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.American Physical Society2022Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/12669https://doi.org/10.1103/physrevlett.128.2523010031-9007enPhysical Review Lettersinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/12669