language: en

Competition of Heavy Quark Radiative and Collisional Energy Loss in Deconfined Matter

P.B. Gossiaux, J. Aichelin, T. Gousset and V. Guiho
SUBATECH, Université de Nantes, EMN, IN2P3/CNRS
4 rue Alfred Kastler, 44307 Nantes cedex 3, France
E-mail: pol.gossiaux@subatech.in2p3.fr

Abstract. We extend our recently advanced model on collisional energy loss of heavy quarks in a quark gluon plasma (QGP) by including radiative energy loss. We discuss the approach and present first preliminary results, including a comparison of the role of both types of energy loss for experimental data. We draw the conclusion that the present nuclear modification factor R AA data on non-photonic single electrons does not permit to " select " between this two types of energy-loss mechanisms.

1. Introduction