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dc.contributor.authorALICE Collaboration
dc.date.accessioned2016-09-19T06:25:30Z
dc.date.available2016-09-19T06:25:30Z
dc.date.issued2016
dc.identifier.citationALICE Collaboration. (2016). Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN =2.76 TeV. <i>Journal of High Energy Physics</i>, <i>2016</i>(9), Article 28. <a href="https://doi.org/10.1007/JHEP09(2016)028" target="_blank">https://doi.org/10.1007/JHEP09(2016)028</a>
dc.identifier.otherCONVID_26217500
dc.identifier.otherTUTKAID_71190
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/51402
dc.description.abstractThe elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb–Pb collisions at √ sNN = 2.76 TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient (v2) represents the elliptic flow. The v2 coefficient of inclusive electrons is measured in three centrality classes (0–10%, 10–20% and 20–40%) with the event plane and the scalar product methods in the transverse momentum (pT) intervals 0.5–13 GeV/c and 0.5–8 GeV/c, respectively. After subtracting the background, mainly from photon conversions and Dalitz decays of neutral mesons, a positive v2 of electrons from heavy-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9σ in the interval 2 < pT < 2.5 GeV/c in semicentral collisions (20–40%). The value of v2 decreases towards more central collisions at low and intermediate pT (0.5 < pT < 3 GeV/c). The v2 of electrons from heavy-flavour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4). The results are described within uncertainties by model calculations including substantial elastic interactions of heavy quarks with an expanding strongly-interacting medium.
dc.language.isoeng
dc.publisherSpringer Berlin Heidelberg
dc.relation.ispartofseriesJournal of High Energy Physics
dc.subject.otherheavy ion experiments
dc.titleElliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN =2.76 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201609164131
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-09-16T12:15:04Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1127-2236
dc.relation.numberinseries9
dc.relation.volume2016
dc.type.versionpublishedVersion
dc.rights.copyright© CERN, for the benefit of the ALICE Collaboration. This is an open access article published by Springer Nature and distributed under the terms of a Creative Commons License. Article funded by SCOAP3.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1007/JHEP09(2016)028


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© CERN, for the benefit of the ALICE Collaboration. This is an open access article published by Springer Nature and distributed under the terms of a Creative Commons License. Article funded by SCOAP3.
Except where otherwise noted, this item's license is described as © CERN, for the benefit of the ALICE Collaboration. This is an open access article published by Springer Nature and distributed under the terms of a Creative Commons License. Article funded by SCOAP3.