Production of soft photons from the quark-gluon plasma in hot QCD- Screening of mass singularities

Abstract

It has been reported that, within the hard-thermal-loop resummation scheme, the production rate of soft real photons from a hot quark-gluon plasma exhibits unscreened mass singularities. We show that still higher-order resummations screen the mass singularities and obtain the finite soft-photon production rate to leading order at logarithmic accuracy $\mathcal{O}(\alpha {\alpha }_s{\ln }^2{\alpha }_s)$.

arXiv comment15 pages, LaTex

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