Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC)
Nuclear Theory
2010-08-11 v2 High Energy Physics - Phenomenology
Nuclear Experiment
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 used by all groups 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.
Keywords
Cite
@article{arxiv.1004.2023,
title = {Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC)},
author = {Matthew Luzum and Jean-Yves Ollitrault},
journal= {arXiv preprint arXiv:1004.2023},
year = {2010}
}
Comments
5 pages, 4 figures; v2: version accepted for publication (minor changes)