@article{1780882,
abstract = {We study the thermal production of large-invariant-mass photon pairs emitted from a quark-gluon plasma at high temperature. To lowest order in perturbation theory the cross section for the annihilation process (qqBAR-->gamma-gamma) is known to lead to logarithmically divergent thermal production rates for massless quarks. We apply recently developed resummation methods of finite-temperature perturbation theory and show how screening effects on quarks in the plasma provide finite thermal rates for gamma-gamma pairs. We compare these results with previous estimates of gamma-gamma production rates. Finally, for the phenomenology of heavy-ion collisions we present the screened gamma-gamma emission spectra by taking into account the space-time history of these collisions.},
author = {Baier, Rudolf and Nakkagawa, H. and Niegawa, A. and Redlich, K.},
issn = {0556-2821},
journal = {Physical review D: Particles, fields, gravitation, and cosmology},
number = {11},
pages = {4323--4332},
title = {{Production of [Gamma]-[Gamma] pairs in a hot quark-gluon plasma and shielding of the quark mass singularity}},
doi = {10.1103/PhysRevD.45.4323},
volume = {45},
year = {1992},
}