dc.contributor.author | ALICE Collaboration | |
dc.contributor.author | Adam, J. | |
dc.contributor.author | Tapia Takaki, Daniel | |
dc.date.accessioned | 2017-10-13T16:11:10Z | |
dc.date.available | 2017-10-13T16:11:10Z | |
dc.date.issued | 2016-02-04 | |
dc.identifier.citation | J. Adam et al. ALICE Collaboration. Phys. Rev. C 93, 024905 (2016) https://doi.org/10.1103/PhysRevC.93.024905 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/25132 | |
dc.description.abstract | We 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. | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/ | en_US |
dc.title | Centrality dependence of pion freeze-out radii in Pb-Pb collisions at √ s N N = 2.76 TeV | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Tapia Takaki, Daniel | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1103/PhysRevC.93.024905 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | |