Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-03-30
PoS High-pTphysics09 2009:002,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
Proceedings for workshop 'High-pt at the LHC 09', Prague, submitted to Proceedings of Science. 8 pages, 3 figures Update v2: f
Scientific paper
High-pT particle production is suppressed in heavy ion collisions due to parton energy loss in dense QCD matter. Here we present a systematic comparison of two different theoretical approximations to parton energy loss calculations: the opacity expansion and the multiple-soft scattering approximation for the simple case of a quark traversing a homogeneous piece of matter with fixed length (the TECHQM 'brick problem'), with focus on the range of parameters that is relevant for interpreting RHIC measurements of high-pT hadron suppression.
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