Measurement of prompt D0 and D?0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s NN =5.02TeV

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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorAmbrogi, Federico
dc.contributor.authorBergauer, Thomas
dc.contributor.authorDragicevic, Marko
dc.contributor.authorErö, Janos
dc.date.accessioned2026-01-22T19:46:04Z
dc.date.issued2021
dc.departmentŞırnak Üniversitesi
dc.description.abstractThe strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference (?v<inf>2</inf>) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v<inf>2</inf>) between D0 (u?c) and D?0 (uc?) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of ?v<inf>2</inf>. The rapidity-averaged value is found to be ??v<inf>2</inf>?=0.001±0.001(stat)±0.003(syst) in PbPb collisions at s<inf> <inf>NN</inf> </inf>=5.02TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D?0mesons v<inf>2</inf> and triangular flow coefficient (v<inf>3</inf>) as functions of rapidity, transverse momentum (p<inf>T</inf>), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v<inf>2</inf> values is observed, while the v<inf>3</inf> is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry. © 2021 The Author
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dc.description.sponsorshipInstitut National de Physique Nucléaire et de Physique des Particules, IN2P3
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dc.description.sponsorshipNarodowe Centrum Nauki, NCN, (2012/07/E/ST2/01406, 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, 2014/14/M/ST2/00428, 2015/19/B/ST2/02861)
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dc.identifier.doi10.1016/j.physletb.2021.136253
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-85106117663
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2021.136253
dc.identifier.urihttps://hdl.handle.net/11503/3201
dc.identifier.volume816
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier B.V.
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_Scopus_20260122
dc.subjectCharm
dc.subjectCMS
dc.subjectElectromagnetic fields
dc.subjectHeavy-flavor
dc.titleMeasurement of prompt D0 and D?0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s NN =5.02TeV
dc.typeArticle

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