Eur. Phys. J. C (2009) 62: 15-20
https://doi.org/10.1140/epjc/s10052-009-1014-2

Regular Article - Theoretical Physics

Heavy-quark energy loss in pQCD and SYM plasmas

¹ Institut de Physique Théorique, CEA/Saclay, 91191, Gif-sur-Yvette cedex, France
² Department of Physics, Columbia University, New York, NY, 10027, USA

^* e-mail: cyrille@phys.columbia.edu

Received: 7 October 2008
Revised: 30 January 2009
Published online: 14 May 2009

Abstract

We consider heavy-quark energy loss and p _⊥ -broadening in a strongly-coupled N=4 Super Yang–Mills (SYM) plasma, and the problem of finite-extent matter is addressed. When expressed in terms of the appropriate saturation momentum, one finds identical parametric forms for the energy loss in pQCD and SYM theory, while p _⊥ -broadening is radiation dominated in SYM theory and multiple scattering dominated in pQCD.