Off-shell effects in dilepton production from hot interacting mesons

Details Off-shell effects in dilepton production from hot interacting mesons Off-shell effects in dilepton production from hot interacting mesons

1997-11-04

arxiv.org/abs/nucl-th/9711006v1

Phys.Rev.C57:254-260,1998

Physics

Nuclear Physics

Nuclear Theory

14 pages, LaTeX2e, 2 figures

Scientific paper

10.1103/PhysRevC.57.254

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 with results obtained using experimentally-extracted spectral functions.

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