Dilepton and Photon Emission Rates from a Hadronic Gas III

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

1998-06-17

arxiv.org/abs/hep-ph/9806391v1

Phys.Rev.C58:2899-2906,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages LaTeX, 11 eps figures

Scientific paper

10.1103/PhysRevC.58.2899

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.

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