QCD plasma equilibration, elliptic flow and jet-quenching - phenomena of common origin

Details QCD plasma equilibration, elliptic flow and jet-quenching - phenomena of common origin QCD plasma equilibration, elliptic flow and jet-quenching - phenomena of common origin

2008-10-31

arxiv.org/abs/0810.5667v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Proc. 24th Winter Workshop on Nuclear Dynamics (2008), South Padre, Texas, USA

Scientific paper

Fast thermalization, a subsequent strong buildup of elliptic flow of QCD matter and jet-quenching as found at the Relativistic Heavy Ion Collider (RHIC) are understood as the consequence of perturbative QCD (pQCD) interactions within the 3+1 dimensional parton cascade BAMPS. The main contributions stem from pQCD inspired bremsstrahlung. Comparisons to Au+Au data of the flow parameter v_2 as a function of participation number as well as the gluonic contribution to the nuclear modification factor R_AA for most central collisions are given. Also the shear viscosity to entropy ratio is dynamically extracted, which lies in the range of 0.08-0.15, depending on the chosen coupling constant.

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