Scattering of high-energy partons off ultrasoft gluon fluctuations in hot QCD plasma and energy losses

Details Scattering of high-energy partons off ultrasoft gluon fluctuations in hot QCD plasma and energy losses Scattering of high-energy partons off ultrasoft gluon fluctuations in hot QCD plasma and energy losses

2003-12-04

arxiv.org/abs/hep-ph/0312059v3

J.Phys. G31 (2005) 1375-1390

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 2 EPS figures. Changed content

Scientific paper

10.1088/0954-3899/31/11/017

Within the framework of the effective theory for ultrasoft field modes a problem of interacting an energetic color particle with ultrasoft fluctuations in hot gluon plasma is considered. The procedure of calculation of certain effective current generating the process of interaction is proposed, and the problem of its gauge independence is discussed. The application of the theory developed to the problem of energy losses of the energetic color particle propagating through hot QCD-medium is given. It is shown that the perturbation approach for calculation of energy losses breaks down at the ultrasoft momentum scale of plasma excitations.

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