English

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

Nuclear Theory 2010-03-04 v1 Nuclear Experiment

Abstract

Within a covariant parton cascade, we discuss the impact of both finite shear viscosity η\eta and freeze-out dynamics on the elliptic flow generated at RHIC. We find that the enhancement of η/s\eta/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 v2(pT)v_2(p_T) for a fluid at η/s0.10.2\eta/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.

Keywords

Cite

@article{arxiv.0909.5314,
  title  = {Elliptic Flow at Finite Shear Viscosity in a Kinetic Approach at RHIC},
  author = {V. Greco and M. Colonna and M. Di Toro and G. Ferini},
  journal= {arXiv preprint arXiv:0909.5314},
  year   = {2010}
}

Comments

3 pages, 4 figures, Proceedings of "Nucleus-Nucleus 2009" -Beijing (China), 16-21 August 2009. To be pubblished in Nucl. Phys. A