Observation of the Charged-Particle Multiplicity Dependence of (Formula presented) in (Formula presented)-Pb Collisions at 8.16 TeV

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dc.contributor.authorChekhovsky, V.
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorMakarenko, V.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J.W.
dc.contributor.authorBenato, L.
dc.date.accessioned2026-04-25T14:13:21Z
dc.date.available2026-04-25T14:13:21Z
dc.date.issued2025
dc.departmentSinop Üniversitesi
dc.description.abstractBound states of charm and anticharm quarks, known as charmonia, have a rich spectroscopic structure that can be used to probe the dynamics of hadron production in high-energy hadron collisions. Here, the cross section ratio of excited (Formula presented) and ground state (Formula presented) vector mesons is measured as a function of the charged-particle multiplicity in proton-lead ((Formula presented)) collisions at a center-of-mass (CM) energy per nucleon pair of 8.16 TeV. The data corresponding to an integrated luminosity of (Formula presented) were collected using the CMS detector. The ratio is measured separately for prompt and nonprompt charmonia in the transverse momentum range (Formula presented) and in four rapidity ranges spanning (Formula presented). For the first time, a statistically significant multiplicity dependence of the prompt cross section ratio is observed in proton-nucleus collisions. There is no clear rapidity dependence in the ratio. The prompt measurements are compared with a theoretical model which includes interactions with nearby particles during the evolution of the system. These results provide additional constraints on hadronization models of heavy quarks in nuclear collisions. © 2025 CERN, for the CMS Collaboration.
dc.identifier.doi10.1103/c9wp-5tq3
dc.identifier.issn0031-9007
dc.identifier.issue9
dc.identifier.pmid40952232
dc.identifier.scopus2-s2.0-105016046382
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1103/c9wp-5tq3
dc.identifier.urihttps://hdl.handle.net/11486/8029
dc.identifier.volume135
dc.indekslendigikaynakScopus
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.snmzKA_Scopus_20260420
dc.subjectBosons
dc.subjectCharged particles
dc.subjectExcited states
dc.subjectHadrons
dc.subjectNuclear reactions
dc.subjectParticle detectors
dc.subjectTellurium compounds
dc.subjectA-center
dc.subjectBound-states
dc.subjectCenter-of-mass energies
dc.subjectCharged particle multiplicities
dc.subjectCharm+
dc.subjectCharmonium
dc.subjectHadron collisions
dc.subjectHadron production
dc.subjectHigh-energy hadrons
dc.subjectVector meson
dc.subjectarticle
dc.subjectGround state
dc.titleObservation of the Charged-Particle Multiplicity Dependence of (Formula presented) in (Formula presented)-Pb Collisions at 8.16 TeV
dc.typeArticle

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