Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-10-30
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, TeX file. References updated, misprints corrected and minor changes
Scientific paper
We calculate the damping rate for transverse gluons with {\nineti finite} soft momentum to leading order in perturbative hot QCD. The internal momenta of the one-loop contributing diagrams are soft. This means we have to use effective vertices and propagators which incorporate the so-called hard thermal loops. We expand the damping rate in powers of the incoming momentum and argue that the series ought to converge within a finite radius of convergence. We contrast such a behavior with the one obtained from a previous calculation that produced a logarithmic behavior, a calculation based on letting the gluon momentum come from the hard limit down towards the interior of the soft region. This difference in behavior may point to interesting physics around some `critical' region.
Abada Abdellatif
Azi O.
Tadji A.
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