Hadronic resonance gas,pTspectra of charged particles, and elliptic flow ins=200 GeVAu+Aucollisions

Victor Roy, A. K. Chaudhuri
2010 Physical Review C  
Charged particles p_T spectra and elliptic flow in 0-60 at RHIC are analyzed in a hydrodynamic model with hot, hadronic resonance gas in the initial state. Physically conceivable hadronic resonance gas, thermalized in the time scale τ_i=1 fm, at a (central) temperature T_i=220 MeV, with viscosity to entropy ratio η/s=0.24, reasonably well explains p_T spectra in all the collision centralities. Centrality dependence of elliptic flow however demands continual increase of viscosity to entropy ratio with centrality.
doi:10.1103/physrevc.82.031901 fatcat:tqzlg4klbnhrdivguri7cgmcwy