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| VOLUME 90 | ISSUE 4 |
PAGE 259
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| Anomalous mass dependence of radiative quark energy loss in a finite-size quark-gluon plasma
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P. Aurenche+, B. G. Zakharov*
+LAPTH, Université de Savoie, CNRS, BP 110, F-74941 Annecy-le-Vieux Cedex, France
*L.D. Landau Institute for Theoretical Physics RAS, 117334 Moscow, Russia
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PACS: 12.38.-t
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Abstract
We demonstrate that for a finite-size quark-gluon plasma
the induced gluon radiation from heavy quarks is stronger
than that for light quarks when the gluon formation length
becomes comparable with (or exceeds) the size of the plasma.
The effect is due to oscillations
of the light-cone wave function for the in-medium
 transition.
The dead cone model by Dokshitzer and Kharzeev
neglecting quantum
finite-size effects is not valid in this regime.
The finite-size effects
also enhance the photon emission from heavy quarks.
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