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arXiv · hep-ph/9907267

Angular Dependence of the Radiative Gluon Spectrum and the Energy Loss of Hard Jets in QCD Media

R. Baier·Yu. L. Dokshitzer·A. H. Mueller·D. Schiff
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Abstract

The induced momentum spectrum of soft gluons radiated from a high energy quark propagating through a QCD medium is derived in the BDMPS formalism. A calorimetric measurement for the medium dependent energy lost by a jet with opening angle $θ_{\rm cone}$ is proposed.The fraction of this energy loss with respect to the integrated one appears to be the relevant observable.It exhibits a universal behaviour in terms of the variable $θ^2_{\rm cone} L^3 \hat q$ where $L$ is the size of the medium and $\hat q$ the transport coefficient. Phenomenological implications for the differences between cold and hot QCD matter are discussed.

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R. Baier, Yu. L. Dokshitzer, A. H. Mueller, D. Schiff. 1999-07-07. Angular Dependence of the Radiative Gluon Spectrum and the Energy Loss of Hard Jets in QCD Media. https://doi.org/10.1103/physrevc.60.064902

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