Pion Electroproduction and Pion-induced Dileptonproduction on the Nucleon

Details Pion Electroproduction and Pion-induced Dileptonproduction on the Nucleon Pion Electroproduction and Pion-induced Dileptonproduction on the Nucleon

1998-02-03

arxiv.org/abs/nucl-th/9802010v1

Physics

Nuclear Physics

Nuclear Theory

11 pages, 7 figures, talk given at the XXXVI International Winter Meeting on Nuclear Physics

Scientific paper

By introducing electromagnetic formfactors in the spacelike region we extend an effective, gauge invariant Lagrangian model considering Born terms, baryon resonances up to 1.7 GeV and vector meson contributions (Rho, Omega) to calculate electroproduction of Pi-mesons. This model forms the basis for predictions of pion induced dilepton production on the nucleon. Therefore, the implemented formfactors are constructed in such a way that their analytic continuation into the timelike region is possible. It is shown that the seagull term and the N*(1520) resonance play a dominant role in the dilepton production.

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