Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at sNN=5.02 TeV

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dc.citation.firstpage195
dc.citation.journalTitlePhysics Letters B
dc.citation.lastpage216
dc.citation.volumeNumber776
dc.contributor.authorCMS Collaboration
dc.date.accessioned2018-11-30T18:57:23Z
dc.date.available2018-11-30T18:57:23Z
dc.date.issued2018
dc.description.abstractThe Fourier coefficients v2 and v3 characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at sNN=5.02 TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, 1<pT<100 GeV/c. The analysis focuses on the pT>10 GeV/c range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60% most central events. The v2 coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to initial-state fluctuations. The values from both methods remain positive up to pT∼60–80 GeV/c, in all examined centrality classes. The v3 coefficient, only measured with the scalar product method, tends to zero for pT≳20 GeV/c. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations.
dc.identifier.citationCMS Collaboration. "Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at sNN=5.02 TeV." <i>Physics Letters B,</i> 776, (2018) Elsevier: 195-216. https://doi.org/10.1016/j.physletb.2017.11.041.
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2017.11.041
dc.identifier.urihttps://hdl.handle.net/1911/103495
dc.language.isoeng
dc.publisherElsevier
dc.rightsThis is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.keywordCMS
dc.subject.keywordQGP
dc.subject.keywordHigh-
dc.subject.keywordpT
dc.subject.keywordFlow
dc.subject.keywordParton energy loss
dc.subject.keywordJet quenching
dc.titleAzimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at sNN=5.02 TeV
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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