Radiative energy loss in a finite dynamical QCD medium

Details Radiative energy loss in a finite dynamical QCD medium Radiative energy loss in a finite dynamical QCD medium

2008-02-08

arxiv.org/abs/0802.1230v1

Phys.Rev.Lett.101:022302,2008

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.101.022302

The radiative energy loss of a quark jet traversing a finite size QCD medium with dynamical constituents is calculated to first order in opacity. Although finite size corrections reduce the energy loss relative to an infinite dynamical QCD medium, under realistic conditions it remains significantly larger than in a static medium. Quantitative predictions of jet suppression in relativistic heavy ion collisions must therefore account for the dynamics of the medium's constituents. Finite size effects are shown to induce a non-linear path length dependence of the energy loss. Our results suggest a simple general mapping between energy loss expressions for static and dynamical QCD media.

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