Radiative Energy Loss of High Energy Partons Traversing an Expanding QCD Plasma

Abstract

We study analytically the medium-induced energy loss of a high energy parton passing through a finite size QCD plasma, which is expanding longitudinally according to Bjorken's model. We extend the BDMPS formalism already applied to static media to the case of a quark which hits successive layers of matter of decreasing temperature, and we show that the resulting radiative energy loss can be as large as 6 times the corresponding one in a static plasma at the reference temperature $T=T(L)$, which is reached after the quark propagates a distance $L$.

19 pages, REVTEX. 1 figure

References in corpus (2)

• Radiative energy loss of high energy quarks in finite-size nuclear matter and quark-gluon plasma
• Medium-induced radiative energy loss; equivalence between the BDMPS and Zakharov formalisms

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