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dc.contributor.authorALICE Collaboration
dc.date.accessioned2015-08-11T11:50:15Z
dc.date.available2015-08-11T11:50:15Z
dc.date.issued2015
dc.identifier.citationALICE Collaboration. (2015). Elliptic flow of identified hadrons in Pb-Pb collisions at √sNN = 2.76 TeV. <i>Journal of High Energy Physics</i>, <i>2015</i>(6), Article 190. <a href="https://doi.org/10.1007/JHEP06(2015)190" target="_blank">https://doi.org/10.1007/JHEP06(2015)190</a>
dc.identifier.otherCONVID_24811155
dc.identifier.otherTUTKAID_66708
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/46596
dc.description.abstractThe elliptic flow coefficient (v2) of identified particles in Pb-Pb collisions at √ sNN = 2.76 TeV was measured with the ALICE detector at the Large Hadron Collider (LHC). The results were obtained with the Scalar Product method, a two-particle correlation technique, using a pseudo-rapidity gap of |∆η| > 0.9 between the identified hadron under study and the reference particles. The v2 is reported for π ±, K±, K0 S , p+p, φ, Λ+Λ, Ξ −+Ξ + and Ω−+Ω + in several collision centralities. In the low transverse momentum (pT) region, pT < 3 GeV/c, v2(pT) exhibits a particle mass dependence consistent with elliptic flow accompanied by the transverse radial expansion of the system with a common velocity field. The experimental data for π ± and the combined K± and K0 S results, are described fairly well by hydrodynamic calculations coupled to a hadronic cascade model (VISHNU) for central collisions. However, the same calculations fail to reproduce the v2(pT) for p+p, φ, Λ+ Λ and Ξ−+Ξ + . For transverse momentum values larger than about 3 GeV/c, particles tend to group according to their type, i.e. mesons and baryons. The present measurements exhibit deviations from the number of constituent quark (NCQ) scaling at the level of ±20% for pT > 3 GeV/c.
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofseriesJournal of High Energy Physics
dc.subject.othercollective flow
dc.subject.otherheavy ions
dc.subject.otherparticle correlations
dc.subject.otherfluctuations
dc.titleElliptic flow of identified hadrons in Pb-Pb collisions at √sNN = 2.76 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201508112642
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-08-11T09:15:05Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn1126-6708
dc.relation.numberinseries6
dc.relation.volume2015
dc.type.versionpublishedVersion
dc.rights.copyright© CERN, for the benefit of the ALICE Collaboration. Funded by SCOAP3 and licensed under CC BY 4.0
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.1007/JHEP06(2015)190
dc.type.okmA1


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© CERN, for the benefit of the ALICE Collaboration. Funded by SCOAP3 and licensed under CC BY 4.0
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