On the Angular Dependence of the Radiative Gluon Spectrum

Abstract

The induced momentum spectrum of soft gluons radiated from a high energy quark produced in and propagating through a QCD medium is reexamined in the BDMPS formalism. A mistake in our published work (Physical Review C60 (1999) 064902) is corrected. The correct dependence of the fractional induced loss $R({\theta }_{\mathrm{cone}})$ as a universal function of the variable ${\theta }_{\mathrm{cone}}^2{L}^3\hat{q}$ where $L$ is the size of the medium and $\hat{q}$ the transport coefficient is presented. We add the proof that the radiated gluon momentum spectrum derived in our formalism is equivalent with the one derived in the Zakharov-Wiedemann approach.

LaTex, 5 pages, 1 figure

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