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Damping of very soft moving quarks in high-temperature QCD

  • A. Abada
  • K. Bouakaz
  • N. Daira-Aifa
Theoretical physics

Abstract.

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.

Keywords

Infrared Divergence Perturbation Scheme Magnetic Mass Magnetic Sensitivity Infrared Sensitivity 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • A. Abada
    • 1
  • K. Bouakaz
    • 1
  • N. Daira-Aifa
    • 2
  1. 1.Département de Physique, Ecole Normale Supérieure, BP 92 Vieux Kouba, 16050 Alger, Algeria DZ
  2. 2.Faculté de Physique, Université des Sciences et de la Technologie Houari Boumediene, BP 32 El-Alia, Bab Ezzouar 16111 Alger, Algeria DZ

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