Dilepton and Photon Emission Rates from a Hadronic Gas III

Abstract

We extend our early analyses of the dilepton and photon emission rates from a hadronic gas to account for strange mesons using a density expansion. The emission rates are reduced to vacuum correlation functions using three-flavor chiral reduction formulas, and the latters are assessed in terms of empirical data. Using a fire-ball, we compare our results to the low and intermediate mass dilepton data available from CERN. Our results suggest that a baryon free hadronic gas does not account for the excess of low mass dielectrons observed at CERES but do well in accounting for the intermediate dimuons at HELIOS. The same observations apply to the recent low and high $p_t$ dielectron rates from CERES.

12 pages LaTeX, 11 eps figures

References in corpus (3)

• Rho Meson Propagation and Dilepton Enhancement in Hot Hadronic Matter
• Dilepton and Photon Emission Rates from a Hadronic Gas II
• Intermediate-mass dilepton production in heavy-ion collisions at 200A GeV

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• Master Formulae Approach to Photon Fusion Reactions
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