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Anisotropic Flow of Charged Particles in Pb-Pb Collisions at sNN =5.02 TeV

J., Adam ; Christiansen, P. LU ; Ljunggren, H. ; Oskarsson, A. LU ; Richert, T. LU ; Silvermyr, D. LU orcid ; Stenlund, E. LU ; Vislavicius, V. LU and M., Zyzak (2016) In Physical Review Letters 116(13).
Abstract
We report the first results of elliptic (v2), triangular (v3), and quadrangular (v4) flow of charged particles in Pb-Pb collisions at a center-of-mass energy per nucleon pair of √sNN=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<pT<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 √sNN=2.76  TeV, the anisotropic flow coefficients v2, v3, and v4 are found to increase by (3.0±0.6)%, (4.3±1.4)%, and (10.2±3.8)%, respectively, in the... (More)
We report the first results of elliptic (v2), triangular (v3), and quadrangular (v4) flow of charged particles in Pb-Pb collisions at a center-of-mass energy per nucleon pair of √sNN=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<pT<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 √sNN=2.76  TeV, the anisotropic flow coefficients v2, v3, and v4 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. (Less)
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author
; ; ; ; ; ; ; and
author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Anisotropy, Binary alloys, Colliding beam accelerators, Heavy ions, Hydrodynamics, Temperature distribution, Anisotropic flows, Cumulant methods, Heavy ion collision, Hydrodynamic model, Large Hadron Collider, Temperature dependence, Transverse momenta, Two particle correlation, Lead alloys
in
Physical Review Letters
volume
116
issue
13
article number
132302
publisher
American Physical Society
external identifiers
  • scopus:84963641155
ISSN
0031-9007
DOI
10.1103/PhysRevLett.116.132302
language
English
LU publication?
yes
id
ed723aa3-eae7-40f5-b372-fc3614f649c7
date added to LUP
2022-04-04 15:34:26
date last changed
2023-05-10 15:22:13
@article{ed723aa3-eae7-40f5-b372-fc3614f649c7,
  abstract     = {{We report the first results of elliptic (v2), triangular (v3), and quadrangular (v4) flow of charged particles in Pb-Pb collisions at a center-of-mass energy per nucleon pair of √sNN=5.02  TeV with the ALICE detector at the CERN Large Hadron Collider. The measurements are performed in the central pseudorapidity region |η|&lt;0.8 and for the transverse momentum range 0.2&lt;pT&lt;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 √sNN=2.76  TeV, the anisotropic flow coefficients v2, v3, and v4 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.}},
  author       = {{J., Adam and Christiansen, P. and Ljunggren, H. and Oskarsson, A. and Richert, T. and Silvermyr, D. and Stenlund, E. and Vislavicius, V. and M., Zyzak}},
  issn         = {{0031-9007}},
  keywords     = {{Anisotropy; Binary alloys; Colliding beam accelerators; Heavy ions; Hydrodynamics; Temperature distribution; Anisotropic flows; Cumulant methods; Heavy ion collision; Hydrodynamic model; Large Hadron Collider; Temperature dependence; Transverse momenta; Two particle correlation; Lead alloys}},
  language     = {{eng}},
  number       = {{13}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Anisotropic Flow of Charged Particles in Pb-Pb Collisions at sNN =5.02 TeV}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.116.132302}},
  doi          = {{10.1103/PhysRevLett.116.132302}},
  volume       = {{116}},
  year         = {{2016}},
}