Radiative heavy quark energy loss in a dynamical QCD medium

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2008-02-20

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American Physical Society

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Abstract

The computation of radiative energy loss in a dynamically screened QCD medium is a key ingredient in obtaining reliable predictions for jet quenching in ultrarelativistic heavy-ion collisions. We calculate, to first order in the opacity, the energy loss suffered by a heavy quark traveling through an infinite and time-independent QCD medium and show that the result for a dynamical medium is almost twice that obtained previously for a medium consisting of randomly distributed static scattering centers. A quantitative description of jet suppression in experiments conducted at the BNL Relativistic Heavy-Ion Collider and CERN Large Hadron Collider thus must correctly account for the dynamics of the medium's constituents.

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Magdalena Djordjevic, Ulrich Heinz, "Radiative heavy quark energy loss in a dynamical QCD medium," Physical Review C 77, no. 2 (2008), doi:10.1103/PhysRevC.77.024905