Charged particle's elliptic flow in 2+1D viscous hydrodynamics at LHC ($\sqrt{s}$= 2.76 TeV) energy in Pb+Pb collision

Abstract

In the Israel-Stewart's theory of second order hydrodynamics, we have simulated $\sqrt{s}$=2.76 TeV Pb+Pb collisions. ALICE data for the centrality dependence of charged particles multiplicity, $p_T$ spectra in 0-5% collisions, centrality dependence of integrated and differential elliptic flow are analysed. Analysis indicate that while ALICE data on charged particles multiplicity or $p_T$ spectra do not demand any viscosity, viscosity is demanded by the elliptic flow data. From a simulataneous fit to all the data sets, viscosity to entropy ratio in ${\sqrt{s}}_{NN}$=2.76 TeV Pb+Pb collisions is extracted as, $\eta /s=0.06\pm 0.02$.

Significantly revised version. New figures are added. Accepted in Phys. Lett. B. 6 pages, 6 figures

References in corpus (12)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• The QCD equation of state with dynamical quarks
• The QCD transition temperature: results with physical masses in the continuum limit II.
• Centrality dependence of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Suppression of charged particle production at large transverse momentum in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• On the Strongly-Interacting Low-Viscosity Matter Created in Relativistic Nuclear Collisions
• Multiplicity scaling in ideal and viscous hydrodynamics
• Bulk viscosity of QCD matter near the critical temperature
• Components of the elliptic flow in Pb-Pb collisions at 2.76 TeV
• Dissipative hydrodynamics and heavy ion collisions
• Multiplicity, mean $p_T$, $p_T$-spectra and elliptic flow of identified particles in Pb+Pb collisions at LHC

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