Photon production in an expanding gluon-enriched plasma
Photon production in an expanding gluon-enriched plasma
Kämpfer, B.; Pavlenko, O. P.
Abstract
Photon production in an expanding gluon plasma with initially little quark admixture
is considered. Photons are created by lowest order a, processes which include quarks.
Chemical equilibration of the quarks in turn is followed by rate equations which rely on lowest order αsgg = qq processes. Expansion slows down the quark cooking. Compared with the standard local equilibrium estimates we find a drastic reduction of mediumenergy photons if the initial quark admixure is below 20% of the chemical saturation density. Higher initial temperatures increase significantly the high-energy photon yield and overcompensate this reduction.
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Forschungszentrum Rossendorf; FZR 93-09 Preprint
ISSN: 1436-3976 - Jadernaja fizika 58, (1995), 2260-2265
- Phys. Atom. Nucl. 58, (1995), 2144-2149
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