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

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.

preprint2013arXivOpen access
Miklós ZétényiGyörgy Wolf
nucl-th
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Open access2 authors1 topic
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Miklós ZétényiGyörgy Wolf

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