Hydrodynamical analysis of centrality dependence of charged particle's multiplicity in ${\sqrt{s}}_{NN}$=2.76 TeV Pb+Pb collisions

Abstract

In Israel-Stewart's theory of dissipative hydrodynamics, we have analyzed the recent ALICE data for the centrality dependence of charged particle multiplicity, centrality dependence of integrated elliptic flow and 0-5% charged particles $p_T$ spectra in ${\sqrt{s}}_{NN}$=2.76 TeV Pb+Pb collisions and determined the initial or the thermalisation time. Analysis indicate that the ALICE data disfavor very early thermalsiation ${\tau }_i$=0.2 fm, or very late thermalsation ${\tau }_i$= 4fm. Data are best explained for thermalisation time ${\tau }_i=0.88_{+0.68}^{-0.14}$ fm.

Final version published in Phys. Rev. C. 4 pages, 3 figures

References in corpus (9)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV
• 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
• Charged-particle multiplicity density at mid-rapidity in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Multiplicity scaling in ideal and viscous hydrodynamics
• Bulk viscosity of QCD matter near the critical temperature
• Equation of state and more from lattice regularized QCD
• Dissipative hydrodynamics and heavy ion collisions

Cited by in corpus (4)

• Modification of Eckart theory of relativistic dissipative fluid by introducing extended matching conditions
• Nonconformal holographic model for D-meson suppression at energies available at the CERN Large Hadron Collider
• Electromagnetic signals from Au+Au collisions at RHIC energy, $\sqrt{s_{NN}}$=200 GeV and Pb+Pb collisions at LHC energy, $\sqrt{s_{NN}}$=2.76 TeV
• Relativistic dissipative hydrodynamics with extended matching conditions for ultra-relativistic heavy-ion collisions