Partonic Scattering Cross Sections in the QCD Medium

Details Partonic Scattering Cross Sections in the QCD Medium Partonic Scattering Cross Sections in the QCD Medium

2001-09-05

arxiv.org/abs/hep-ph/0109043v2

Phys.Lett. B520 (2001) 233-242

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, Latex, 3 figures (eps), typos corrected

Scientific paper

10.1016/S0370-2693(01)01190-X

A medium modified gluon propagator is used to evaluate the scattering cross section for the process gg-->gg in the QCD medium by performing an explicit sum over the polarizations of the gluons. We incorporate a magnetic sreening mass from a non-perturbative study. It is shown that the medium modified cross section is finite, divergence free, and is independent of any ad-hoc momentum transfer cut-off parameters. The medium modified finite cross sections are necessary for a realistic investigation of the production and equilibration of the minijet plasma expected at RHIC and LHC.

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