The centrality dependence of v2/epsilon: the ideal hydro limit and eta/s
Masui H. (
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA)
Ollitrault J.-Y. (
CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Snellings R. (
NIKHEF, Kruislaan 409, NL-1098 SJ Amsterdam, THE NETHERLANDS)
Tang A. (
Brookhaven National Laboratory (BNL), Upton, NY 11973-5000, USA)
Abstract:
The large elliptic flow observed at RHIC is considered to be evidence for
almost perfect liquid behavior of the strongly coupled quark-gluon plasma
produced in the collisions. In these proceedings we present a two parameter fit
for the centrality dependence of the elliptic flow scaled by the spatial
eccentricity. We show by comparing to viscous hydrodynamical calculations that
these two parameters are in good approximation proportional to the shear
viscosity over entropy ratio and the ideal hydro limit of the ratio v2/epsilon.
Année de publication : 2009
Revue : Nucl. Phys. A
830 463c-466c (2009)
Conférence - Poster : par
R. Snellings; The 21st International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2009) ;
Knoxville, TN ; 2009-03-30 / 2009-04-04
DOI :
10.1016/j.nuclphysa.2009.10.103Preprint :
arXiv:0908.0403 Langue : Anglais
Fichier(s) à télécharger : publi.pdf