The centrality dependence of : the ideal hydro limit and

✍ Scribed by H. Masui; J.-Y. Ollitrault; R. Snellings; A. Tang

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 324 KB
• Volume: 830
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2009.10.103

✦ Synopsis

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 v 2 scaled by the spatial eccentricity ε. We show by comparing to viscous hydrodynamical calculations that these two parameters are in good approximation proportional to the shear viscosity over entropy ratio η/s and the ideal hydro limit of the ratio v 2 /ε.