Dilepton production in pion-nucleon collisions in an effective field theory approach

Abstract

We present a model of electron-positron pair production in pion-nucleon collisions in the exclusive reaction πN -> Ne^+e^-. The model is based on an effective field theory approach, incorporating 16 baryon resonances below 2 GeV. Parameters of the model are fitted to pion photoproduction data. We present the resulting dilepton invariant mass spectra for π^- p collisions up to sqrt(s)=1.9 GeV center-of-mass collision energy. These results are meant to give predictions for the planned experiments at the HADES spectrometer in GSI, Darmstadt.

published version

References in corpus (4)

• Effective Lagrangian Approach to pion photoproduction from the nucleon
• Dilepton production in proton-proton and quasifree proton-neutron reactions at 1.25 GeV
• Dilepton production in nucleon-nucleon collisions reexamined
• Di-electrons from $\eta$ meson Dalitz decay in proton-proton collisions