Journal
NUCLEAR PHYSICS A
Volume 957, Issue -, Pages 99-108Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysa.2016.08.002
Keywords
Triangular flow; SPS; Heavy-ion
Categories
Funding
- Ministry of Education, Science and Technological Development of the Republic of Serbia [171019]
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Differential triangular flow, v(3)(p(T)), of negative pions is measured at root s(NN) = 17.3 GeV around midrapidity by the CERES/NA45 experiment at CERN in central PbAu collisions in the range 0-30% with a mean centrality of 5.5%. This is the first measurement as a function of transverse momentum of the triangular flow at SPS energies. The p(T) range extends from about 0.05 GeV/c to more than 2 GeV/c. The triangular flow magnitude, corrected for the HBT effects, is smaller by a factor of about 2 than the one measured by the PHENIX experiment at RHIC and the ALICE experiment at the LHC. Within the analyzed range of central collisions no significant centrality dependence is observed. The data are found to be well described by a viscous hydrodynamic calculation combined with an UrQMD cascade model for the late stages. (C) 2016 Elsevier B.V. All rights reserved.
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