2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82188We present consistent theoretical descriptions of the $πN \to e^+e^- N$ and $γN \to e^+e^- N$ reactions on proton and neutron targets for total center of mass energies $\sqrt s$ ranging between 1.50 GeV and 1.75 GeV. These reactions are complementary to study the coupling of low-lying baryon resonances to vector meson-nucleon channels. We show in particular how the resonant structure of the amplitudes for both processes generates specific and large quantum interferences between $ρ$- and $ω$-meson decays into $e^+e^-$ pairs. Data on the $πN \to e^+e^- N$ and $γN \to e^+e^- N$ reactions are expected in the near future from the HADES program at GSI and from dilepton studies with CLAS at JLab.6 pages, 6 figures, Paper presented at Hirschegg 2004, 'Probing nuclei and nucleons with electrons and photons', January 12th-16th, 2004Nuclear Theorytext