This article is cited in 66 papers

FIELDS, PARTICLES, AND NUCLEI

Parton energy loss in an expanding quark-gluon plasma: Radiative vs collisional

B. G. Zakharov

Landau Institute for Theoretical Physics

Abstract: We perform a comparison of the radiative and collisional parton energy losses in an expanding quark-gluon plasma. The radiative energy loss is calculated within the light-cone path integral approach. The collisional energy loss is calculated using the Bjorken method with an accurate treatment of the binary collision kinematics. Our numerical results demonstrate that for RHIC and LHC conditions the collisional energy loss is relatively small in comparison to the radiative one. We find an enhancement of the heavy quark radiative energy loss as compared to that of the light quarks at high energies.

PACS: 24.85.+p

Received: 08.08.2007
Revised: 27.08.2007

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2007, 86:7, 444–450

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