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

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