Dilepton and Photon Emission Rates from a Hadronic Gas

Details Dilepton and Photon Emission Rates from a Hadronic Gas Dilepton and Photon Emission Rates from a Hadronic Gas

1996-03-12

arxiv.org/abs/hep-ph/9603290v2

Phys.Lett. B384 (1996) 255-262

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, LaTeX using revTeX, 6 figures imbedded in text. Figures slightly changed, text left unchanged

Scientific paper

10.1016/0370-2693(96)00802-7

We analyze the dilepton and photon emission rates from a hadronic gas using chiral reduction formulas and a virial expansion. The emission rates are reduced to pertinent vacuum correlation functions, most of which can be assessed from experiment. Our results indicate that in the low mass region, the dilepton and photon rates are enhanced compared to most of the calculations using chiral Lagrangians. The enhancement is further increased through a finite pion chemical potential. An estimate of the emission rates is also made using Haag's expansion for the electromagnetic current. The relevance of these results to dilepton and photon emission rates in heavy-ion collisions is discussed.

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