Off-shell effects in dilepton production from hot interacting mesons

Song Gao, Charles Gale
1998 Physical Review C  
The production of dielectrons in reactions involving a_1 mesons and pions is studied. We compare results obtained with different phenomenological Lagrangians that have been used in connection with hadronic matter and finite nuclei. We insist on the necessity for those interactions to satisfy known empirical properties of the strong interaction. Large off-shell effects in dielectron production are found and some consequences for the interpretation of heavy ion data are outlined. We also compare
more » ... ith results obtained using experimentally-extracted spectral functions.
doi:10.1103/physrevc.57.254 fatcat:fqbduqsolrelzdpqiqfuqgz5fe