Ultrasoft Quark Damping in Hot QCD

Details Ultrasoft Quark Damping in Hot QCD Ultrasoft Quark Damping in Hot QCD

2005-11-22

arxiv.org/abs/hep-ph/0511258v1

Int.J.Mod.Phys.A21:5317-5332,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages

Scientific paper

10.1142/S0217751X06033052

We determine the quark damping rates in the context of next-to-leading order hard-thermal-loop summed perturbation of high-temperature QCD where weak coupling is assumed. The quarks are ultrasoft. Three types of divergent behavior are encountered: infrared, light-cone and at specific points determined by the gluon energies. The infrared divergence persists and is logarithmic whereas the two others are circumvented.

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