Soft Photon Production Rate in Resummed Perturbation Theory of High Temperature QCD

Abstract

We calculate the production rate of soft real photons from a hot quark -- gluon plasma using Braaten -- Pisarski's perturbative resummation method. To leading order in the QCD coupling constant $g$ we find a logarithmically divergent result for photon energies of order $gT$, where $T$ is the plasma temperature. This divergent behaviour is due to unscreened mass singularities in the effective hard thermal loop vertices in the case of a massless external photon.

13 pages (2 figures not included), PLAINTEX, LPTHE-Orsay 93/46, BI-TP 93/55

References in corpus (1)

• Dilepton and photon production in the 'hot-glue' scenario

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