Partonic scattering cross sections in the QCD medium

  • 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 ex- plicit 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 PACS: 12.38.Mh; 14.70.Dj; 12.38.Bx; 11.10.Wx

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Metadaten
Author:Jörg Ruppert, Gouranga C. Nayak, Dennis Dean Dietrich, Horst StöckerORCiDGND, Walter GreinerGND
URN:urn:nbn:de:hebis:30-21447
Document Type:Preprint
Language:English
Date of Publication (online):2005/11/17
Year of first Publication:2001
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/11/17
Tag:(QGP); QCD medium; quark-gluon plasma
Source:Phys.Lett.B520:233-242,2001. [hep-ph/0109043]
HeBIS-PPN:185531903
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht