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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

Abstract:

The 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.

Año de publicación:

2022

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Física de partículas

    Áreas temáticas:

    • Física moderna
    • Química orgánica

    Contribuidores:

    Taliercio A.Taliercio A.
    Sfar H.R.Sfar H.R.
    Makarenko V.Makarenko V.
    Bruno G.Bruno G.
    Litomin A.Litomin A.
    Schöfbeck R.Schöfbeck R.
    Pitters F.M.Pitters F.M.
    Vander Velde C.Vander Velde C.
    Adam W.Adam W.
    Valle A.E.D.Valle A.E.D.
    Vit M.Vit M.
    Pétré L.Pétré L.
    Frühwirth R.Frühwirth R.
    Grebenyuk A.Grebenyuk A.
    Dobur D.Dobur D.
    D’Hondt J.D’Hondt J.
    Thomas L.Thomas L.
    Mondal K.Mondal K.
    Bethani A.Bethani A.
    Tran T.T.Tran T.T.
    Samalan A.Samalan A.
    Jain S.Jain S.
    Paulitsch P.Paulitsch P.
    Wulz C.E.Wulz C.E.
    Chatterjee S.Chatterjee S.
    De Lentdecker G.De Lentdecker G.
    Tavernier S.Tavernier S.
    Lambrecht L.Lambrecht L.
    Chekhovsky V.Chekhovsky V.
    Janssen T.Janssen T.
    Tytgat M.Tytgat M.
    Skovpen K.Skovpen K.
    Favart L.Favart L.
    Dragicevic M.Dragicevic M.
    Van Doninck W.Van Doninck W.
    Darwish M.R.Darwish M.R.
    Delcourt M.Delcourt M.
    Caputo C.Caputo C.
    Faham H.E.Faham H.E.
    Starling E.Starling E.
    David P.David P.
    Mahdavikhorrami M.Mahdavikhorrami M.
    Cornelis T.Cornelis T.
    Edgar Carrera JarrinEdgar Carrera Jarrin
    Krammer N.Krammer N.
    Bergauer T.Bergauer T.
    Prisciandaro J.Prisciandaro J.
    Van Putte S.Van Putte S.
    Van Remortel N.Van Remortel N.
    Benecke A.Benecke A.
    Popov A.Popov A.
    Vanden Bemden M.Vanden Bemden M.
    Jeitler M.Jeitler M.
    Schieck J.Schieck J.
    Wertz S.Wertz S.
    Clerbaux B.Clerbaux B.
    Moraes A.Moraes A.
    Kalsi A.K.Kalsi A.K.
    Vanlaer P.Vanlaer P.
    Mestdach G.Mestdach G.
    Van Mulders P.Van Mulders P.
    Andrejkovic J.W.Andrejkovic J.W.
    Wezenbeek L.Wezenbeek L.
    Hensel C.Hensel C.
    Roskas C.Roskas C.
    Bols E.S.Bols E.S.
    Schwarz D.Schwarz D.
    Lelek A.Lelek A.
    Knolle J.Knolle J.
    Lee K.Lee K.
    Jaffel K.Jaffel K.
    Liko D.Liko D.
    Lechner L.Lechner L.
    Blekman F.Blekman F.
    Makarenko I.Makarenko I.
    Moureaux L.Moureaux L.
    Morton A.Morton A.
    Lowette S.Lowette S.
    Templ S.Templ S.
    Alves G.A.Alves G.A.
    Teklishyn M.Teklishyn M.
    Delaere C.Delaere C.
    Mikulec I.Mikulec I.
    Beghin D.Beghin D.
    Bury F.Bury F.
    Bilin B.Bilin B.
    Kello T.Kello T.
    Vermassen B.Vermassen B.
    Tumasyan A.Tumasyan A.
    Giammanco A.Giammanco A.
    Postiau N.Postiau N.
    Müller D.Müller D.
    Waltenberger W.Waltenberger W.
    De Wolf E.A.De Wolf E.A.
    Vischia P.Vischia P.
    Donertas I.S.Donertas I.S.
    Sahasransu A.R.Sahasransu A.R.
    Lemaitre V.Lemaitre V.
    Van Mechelen P.Van Mechelen P.
    Niedziela M.Niedziela M.
    Moortgat S.Moortgat S.