Hard parton damping in hot QCD

Details Hard parton damping in hot QCD Hard parton damping in hot QCD

2004-09-23

arxiv.org/abs/hep-ph/0409270v1

J.Phys. G31 (2005) S371-S378

Physics

High Energy Physics

High Energy Physics - Phenomenology

invitetd talk given at 'Hot Quarks 04', July 18-24 2004, Taos Valley, NM, USA

Scientific paper

10.1088/0954-3899/31/4/046

The gluon and quark collisional widths in hot QCD plasmas are discussed with emphasis on temperatures near Tc, where the coupling is large. Considering the effect on the entropy, which is known from lattice calculations, it is argued that the width of the partons, which in the perturbative limit is given by gamma ~ g^2 ln(1/g) T, should be sizeable at intermediate temperatures but has to be small close to Tc. This behavior implies a substantial reduction of the radiative energy loss of jets near Tc.

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