Report on: Constraining the viscous freeze out distribution function with RHIC data

by Vinod Chandra Joshi (DTP, TIFR)

Friday 23 Apr 2010, 11:30 → 12:30 Asia/Kolkata

A-304 (Colaba Campus)

Matthew Luzum, Jean-Yves Ollitrault Abstract: We investigate the form of the viscous correction to the equilibrium distribution function in the context of a Cooper-Frye freeze out prescription for viscous hydrodynamic simulations of relativistic heavy ion collisions. The standard quadratic ansatz for the case of shear viscosity is found to be disfavored by experimental data for v4/(v2)^2 at the Relativistic Heavy Ion Collider, and is unlikely to be correct for the hadron resonance gas present at freeze out. Instead, data for v2(pt) along with v4/(v2)^2 favor a momentum dependence between linear and quadratic.

Paper http://in.arxiv.org/abs/1004.2023