Energy Loss of Heavy Quarks in a QGP with a Running Coupling Constant Approach

Abstract

We show that the effective running coupling constant, ${\alpha }_{\mathrm{eff}}$, and the effective regulator, $\kappa {\tilde{m}}_D^2$, which we used recently to calculate the energy loss, $\frac{dE}{dx}$, and the elliptic flow, $v_2$, of heavy quarks in an expanding quark gluon plasma plasma (QGP) are compatible with lattice results and with recently advanced analytical pQCD calculation.

Comments: 4 pages, 3 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee; v2 with larger figures and modified captions