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dc.contributor.authorALICE Collaboration
dc.contributor.authorChang, BeomSu
dc.contributor.authorKim, Dong Jo
dc.contributor.authorKral, Jiri
dc.contributor.authorRak, Jan
dc.contributor.authorRäsänen, Sami
dc.contributor.authorSlupecki, Maciej
dc.contributor.authorSnellman, Tomas
dc.contributor.authorTrzaska, Wladyslaw
dc.contributor.authorVargyas, Márton
dc.contributor.authorViinikainen, Jussi
dc.date.accessioned2016-03-16T09:44:42Z
dc.date.available2016-03-16T09:44:42Z
dc.date.issued2016
dc.identifier.citationALICE Collaboration. (2016). Centrality dependence of pion freeze-out radii in Pb-Pb collisions at √sNN = 2.76 TeV. <em>Physical Review C</em>, 93 (2), 024905. <a href="http://dx.doi.org/10.1103/PhysRevC.93.024905">doi:10.1103/PhysRevC.93.024905</a>
dc.identifier.otherTUTKAID_69297
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/49076
dc.description.abstractWe report on the measurement of freeze-out radii for pairs of identical-charge pions measured in Pb-Pb collisions at √sNN = 2.76 TeV as a function of collision centrality and the average transverse momentum of the pair kT. Three-dimensional sizes of the system (femtoscopic radii), as well as direction-averaged onedimensional radii are extracted. The radii decrease with kT, following a power-law behavior. This is qualitatively consistent with expectations from a collectively expanding system, produced in hydrodynamic calculations. The radii also scale linearly with dNch/dη 1/3. This behavior is compared to world data on femtoscopic radii in heavy-ion collisions. While the dependence is qualitatively similar to results at smaller √sNN, a decrease in the ratio Rout/Rside is seen, which is in qualitative agreement with a specific prediction from hydrodynamic models: a change from inside-out to outside-in freeze-out configuration. The results provide further evidence for the production of a collective, strongly coupled system in heavy-ion collisions at the CERN Large Hadron Collider.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherPb-Pb collisions
dc.subject.otherpions
dc.titleCentrality dependence of pion freeze-out radii in Pb-Pb collisions at √sNN = 2.76 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201603011732
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-03-01T13:15:11Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn0556-2813
dc.relation.volume93
dc.type.versionpublishedVersion
dc.rights.copyright©2016 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/3.0/
dc.relation.doi10.1103/PhysRevC.93.024905


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©2016 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.
Except where otherwise noted, this item's license is described as ©2016 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.