Observation of the Υ(3S) meson and suppression of Υ states in Pb-Pb collisions at √sNN=5.02 TeV

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dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J. W.
dc.contributor.authorBergauer, Thomas
dc.contributor.authorChatterjee, S.
dc.contributor.authorDamanakis, Konstantinos
dc.contributor.authorDragicevic, M.
dc.date.accessioned2024-10-31T06:08:23Z
dc.date.available2024-10-31T06:08:23Z
dc.date.issued2024
dc.departmentİstanbul Gedik Üniversitesi
dc.description.abstractThe production of Upsilon(2S) and Upsilon(3S) mesons in lead-lead (Pb-Pb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The Upsilon(3S) meson is observed for the first time in Pb-Pb collisions, with a significance above 5 standard deviations. The ratios of yields measured in Pb-Pb and pp collisions are reported for both the Upsilon(2S) and Upsilon(3S) mesons, as functions of transverse momentum and Pb-Pb collision centrality. These ratios, when appropriately scaled, are significantly less than unity, indicating a suppression of Upsilon yields in Pb-Pb collisions. This suppression increases from peripheral to central Pb-Pb collisions. Furthermore, the suppression is stronger for Upsilon(3S) mesons compared to Upsilon(2S) mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the J/psi, psi(2S), Upsilon(1S), and Upsilon(2S) mesons.
dc.description.sponsorshipSC (Armenia) ; BMBWF (Austria) ; Austrian Science Fund (FWF) ; Fonds de la Recherche Scientifique - FNRS ; FWO ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) ; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ)
dc.identifier.doi10.1103/PhysRevLett.133.022302
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.issue2
dc.identifier.pmid39073941
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.133.022302
dc.identifier.urihttps://hdl.handle.net/11501/1547
dc.identifier.volume133
dc.identifier.wosWOS:001290703500001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review Letters
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject√sNN=5.02 TeV
dc.subjectPb-Pb Collisions
dc.subjectMeson and Suppression
dc.titleObservation of the Υ(3S) meson and suppression of Υ states in Pb-Pb collisions at √sNN=5.02 TeV
dc.typeArticle

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