NLO Dispersion Laws for Slow-Moving Quarks in HTL QCD
arXiv:1501.00140 · doi:10.1007/JHEP03(2015)058
Abstract
We determine the next-to-leading order dispersion laws for slow-moving quarks in hard-thermal-loop perturbation of high-temperature QCD where weak coupling is assumed. Real-time formalism is used. The next-to-leading order quark self-energy is written in terms of three and four HTL-dressed vertex functions. The hard thermal loops contributing to these vertex functions are calculated ab initio and expressed using the Feynman parametrization which allows the calculation of the solid-angle integrals involved. We use a prototype of the resulting integrals to indicate how finite results are obtained in the limit of vanishing regularizer.
arXiv comment28 pages, 7 figures. Changes made to the text. References added
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