Damping of very soft moving quarks in high-temperature QCD

Details Damping of very soft moving quarks in high-temperature QCD Damping of very soft moving quarks in high-temperature QCD

2000-08-31

arxiv.org/abs/hep-ph/0008335v1

Eur.Phys.J.C18:765-777,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, REVTeX

Scientific paper

10.1007/s100520100554

We determine the analytic expression of the damping rates for very soft moving quarks in an expansion to second order in powers of their momentum in the context of QCD at high temperature. The calculation is performed using the hard-thermal-loop-summed perturbation scheme. We describe the range of validity of the expansion and make a comparison with other calculations, particularly those using a magnetic mass as a shield from infrared sensitivity. We discuss the possible occurrence of infrared divergences in our results and argue that they are due to magnetic sensitivity.

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