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arXiv · 0909.5314

Elliptic Flow at Finite Shear Viscosity in a Kinetic Approach at RHIC

V. Greco·M. Colonna·M. Di Toro·G. Ferini
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Abstract

Within a covariant parton cascade, we discuss the impact of both finite shear viscosity $η$ and freeze-out dynamics on the elliptic flow generated at RHIC. We find that the enhancement of $η/s$ in the cross-over region of the QGP phase transition cannot be neglected in order to extract the information from the QGP phase. We also point out that the elliptic flow $v_2(p_T)$ for a fluid at $η/s \sim 0.1-0.2$ is consistent with the one needed by quark number scaling drawing a nice consistency between the nearly perfect fluid property of QGP and the coalescence process.

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V. Greco, M. Colonna, M. Di Toro, G. Ferini. 2009-09-29. Elliptic Flow at Finite Shear Viscosity in a Kinetic Approach at RHIC. https://doi.org/10.1016/j.nuclphysa.2009.12.057

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