Photons from Hadronic Matter at Finite Temperature

Details Photons from Hadronic Matter at Finite Temperature Photons from Hadronic Matter at Finite Temperature

1997-12-02

arxiv.org/abs/nucl-th/9712007v3

Nucl.Phys. A634 (1998) 206-230

Physics

Nuclear Physics

Nuclear Theory

changed content, added references and figures.(30 pages, Figures included). To appear in Nuclear Physics A

Scientific paper

10.1016/S0375-9474(98)00159-6

Temperature dependence of hadronic decay widths and masses are studied within the framework of an effective Lagrangian approach. At finite temperature the hadronic masses do not seem to follow a universal scaling law. Considering an exhaustive set of hadronic reactions and vector meson decays we have estimated the photon spectrum emitted from hot hadronic matter taking into account medium effects through thermal loop corrections on the hadronic decay widths and masses. An enhancement in photon emission rate is obtained when we use the in-medium masses of vector mesons in our calculations. It is observed that the effect of $\rho$ decay width on the photon spectra is negligible.

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