Role of the a1 meson in dilepton production from hot hadronic matter
Abstract
Dilepton production from hot hadronic matter is studied in an effective chiral Lagrangian with pions, -mesons, and a1 mesons, We find that the production rates from reactions that involve axial-vector mesons dominate over contributions from all other reactions when the dilepton invariant mass is above 1.5 GeV.
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