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Title: Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC)

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 v{sub 4}/(v{sub 2}){sup 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 v{sub 2}(p{sub t}) along with v{sub 4}/(v{sub 2}){sup 2} favor a momentum dependence between linear and quadratic.

Authors:
;  [1]
  1. Institut de Physique Theorique, CEA Saclay and CNRS URA 2306, F-91191 Gif-sur-Yvette (France)
Publication Date:
OSTI Identifier:
21389216
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 82; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.82.014906; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BNL; BROOKHAVEN RHIC; CORRECTIONS; DISTRIBUTION FUNCTIONS; EQUILIBRIUM; FREEZING OUT; HADRONS; HEAVY ION REACTIONS; RELATIVISTIC RANGE; RESONANCE; SIMULATION; VISCOSITY; ACCELERATORS; ELEMENTARY PARTICLES; ENERGY RANGE; FUNCTIONS; HEAVY ION ACCELERATORS; NATIONAL ORGANIZATIONS; NUCLEAR REACTIONS; SEPARATION PROCESSES; STORAGE RINGS; US AEC; US DOE; US ERDA; US ORGANIZATIONS

Citation Formats

Luzum, Matthew, and Ollitrault, Jean-Yves. Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC). United States: N. p., 2010. Web. doi:10.1103/PHYSREVC.82.014906.
Luzum, Matthew, & Ollitrault, Jean-Yves. Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC). United States. doi:10.1103/PHYSREVC.82.014906.
Luzum, Matthew, and Ollitrault, Jean-Yves. Thu . "Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC)". United States. doi:10.1103/PHYSREVC.82.014906.
@article{osti_21389216,
title = {Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider (RHIC)},
author = {Luzum, Matthew and Ollitrault, Jean-Yves},
abstractNote = {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 v{sub 4}/(v{sub 2}){sup 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 v{sub 2}(p{sub t}) along with v{sub 4}/(v{sub 2}){sup 2} favor a momentum dependence between linear and quadratic.},
doi = {10.1103/PHYSREVC.82.014906},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 1,
volume = 82,
place = {United States},
year = {2010},
month = {7}
}