Anisotropic Flow of Charged Particles in Pb-Pb Collisions at √S<sub>NN</sub>=5.02 TeV



Adam, J, Adamova, D, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Aiola, S
et al (show 984 more authors) (2016) Anisotropic Flow of Charged Particles in Pb-Pb Collisions at √S<sub>NN</sub>=5.02 TeV. PHYSICAL REVIEW LETTERS, 116 (13). 132302-.

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Abstract

We report the first results of elliptic (v_{2}), triangular (v_{3}), and quadrangular (v_{4}) flow of charged particles in Pb-Pb collisions at a center-of-mass energy per nucleon pair of sqrt[s_{NN}]=5.02  TeV with the ALICE detector at the CERN Large Hadron Collider. The measurements are performed in the central pseudorapidity region |η|<0.8 and for the transverse momentum range 0.2<p_{T}<5  GeV/c. The anisotropic flow is measured using two-particle correlations with a pseudorapidity gap greater than one unit and with the multiparticle cumulant method. Compared to results from Pb-Pb collisions at sqrt[s_{NN}]=2.76  TeV, the anisotropic flow coefficients v_{2}, v_{3}, and v_{4} are found to increase by (3.0±0.6)%, (4.3±1.4)%, and (10.2±3.8)%, respectively, in the centrality range 0%-50%. This increase can be attributed mostly to an increase of the average transverse momentum between the two energies. The measurements are found to be compatible with hydrodynamic model calculations. This comparison provides a unique opportunity to test the validity of the hydrodynamic picture and the power to further discriminate between various possibilities for the temperature dependence of shear viscosity to entropy density ratio of the produced matter in heavy-ion collisions at the highest energies.

Item Type: Article
Uncontrolled Keywords: ALICE Collaboration
Depositing User: Symplectic Admin
Date Deposited: 13 Jul 2016 11:06
Last Modified: 05 Oct 2023 11:33
DOI: 10.1103/PhysRevLett.116.132302
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3002300

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