Comparing parton energy loss models

Abstract

The similarities and differences between three commonly used formalisms for radiative parton energy loss in hot strongly interacting matter are discussed. The single gluon emission spectra are evaluated for a model system consisting of a homogeneous medium with a fixed length, the `TECHQM brick'. Sizable quantitative differences are found and the origins of these differences are discussed.

Comments: 6 pages, 3 figures, submitted to proceedings of 4th international conference on hard and electromagnetic probes of high-energy nuclear collisions