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arXiv · 1111.0769

Jets in medium - what RHIC and LHC measurements of R_AA and I_AA can teach about the parton-medium interaction

Thorsten Renk
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Abstract

High P_T observables associated with hard pQCD processes are regarded as tomographic probes of the medium created in ultrarelativistic heavy-ion collisions. Unfortunately, tomography is unexpectedly complicated in practice due to model uncertainties and the highly averaged nature of many observables. However, a systematic comparison study demanding a simultaneous description of many observables within the same framework is sufficiently powerful to rule out a large fraction of conjectured models about the physics mechanism of parton-medium interaction. From this study, it can be inferred that the relevant mechanism is likely to be perturbatively tractable medium-induced radiation with a small component of elastic energy transfer into the medium.

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Thorsten Renk. 2011-11-03. Jets in medium - what RHIC and LHC measurements of R_AA and I_AA can teach about the parton-medium interaction. https://doi.org/10.1143/ptps.193.101

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