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dc.contributor.authorALICE Collaboration
dc.date.accessioned2018-09-17T08:38:16Z
dc.date.available2018-09-17T08:38:16Z
dc.date.issued2018
dc.identifier.citationALICE Collaboration. (2018). Azimuthally-differential pion femtoscopy relative to the third harmonic event plane in Pb–Pb collisions at √sNN = 2.76 TeV. <i>Physics Letters B</i>, <i>785</i>, 320-331. <a href="https://doi.org/10.1016/j.physletb.2018.06.042" target="_blank">https://doi.org/10.1016/j.physletb.2018.06.042</a>
dc.identifier.otherCONVID_28150654
dc.identifier.otherTUTKAID_78189
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/59537
dc.description.abstractAzimuthally-differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze out, provide very important information on the nature and dynamics of the system evolution. While the HBT radii oscillations relative to the second harmonic event plane measured recently reflect mostly the spatial geometry of the source, model studies have shown that the HBT radii oscillations relative to the third harmonic event plane are predominantly defined by the velocity fields. In this Letter, we present the first results on azimuthally-differential pion femtoscopy relative to the third harmonic event plane as a function of the pion pair transverse momentum kT for different collision centralities in Pb–Pb collisions at √sNN = 2.76 TeV. We find that the Rside and Rout radii, which characterize the pion source size in the directions perpendicular and parallel to the pion transverse momentum, oscillate in phase relative to the third harmonic event plane, similar to the results from 3+1D hydrodynamical calculations. The observed radii oscillations unambiguously signal a collective expansion and anisotropy in the velocity fields. A comparison of the measured radii oscillations with the Blast-Wave model calculations indicate that the initial state triangularity is washedout at freeze out.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofseriesPhysics Letters B
dc.rightsCC BY 4.0
dc.subject.otherheavy-ion collisions
dc.subject.otherAzimuthally-differential femtoscopic measurements
dc.titleAzimuthally-differential pion femtoscopy relative to the third harmonic event plane in Pb–Pb collisions at √sNN = 2.76 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201809104053
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2018-09-10T06:15:14Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange320-331
dc.relation.issn0370-2693
dc.relation.numberinseries0
dc.relation.volume785
dc.type.versionpublishedVersion
dc.rights.copyright© 2018 European Organization for Nuclear Research. Funded by SCOAP3.
dc.rights.accesslevelopenAccessfi
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1016/j.physletb.2018.06.042
dc.type.okmA1


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