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arXiv · hep-ph/9901385

The Role of Nucleons in Electromagnetic Emission Rates

James V. Steele·Ismail Zahed
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Abstract

Electromagnetic emission rates from a thermalized hadronic gas are important for the interpretation of dilepton signals from heavy-ion collisions. Although there is a consensus in the literature about rates for a pure meson gas, qualitative differences appear with a finite baryon density. We show this to be essentially due to the way in which the pi-N background is treated in regards to the nucleon resonances. Using a background constrained by unitarity and broken chiral symmetry, it is emphasized that the thermalized hadronic gas can be considered dilute.

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James V. Steele, Ismail Zahed. 1999-02-08. The Role of Nucleons in Electromagnetic Emission Rates. https://doi.org/10.1103/physrevd.60.037502

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