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

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

1993-11-22

arxiv.org/abs/hep-ph/9311329v1

Z.Phys. C62 (1994) 337-342

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1007/BF01560248

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.

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