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A Phenomenological Description of (π^{-}Δ^{++}) Photo- and Electroproduction in Nucleon Resonance Region

M. Ripani·V. Mokeev·M. Anghinolfi·M. Battaglieri·G. Fedotov·E. Golovach·B. Ishkhanov·M. Osipenko·G. Ricco·V. Sapunenko·M. Taiuti
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Abstract

The (π^{-}Δ^{++}) production on the nucleon by real and virtual photons is discussed as initial step in a simple model approach for the two pion photo- and electroproduction on the nucleon, with emphasis on nucleon resonance excitation which is of interest for new facilities like TJNAF. A calculation for (π^{-}Δ^{++}) channel in resonance excitation region is presented and compared to existing experimental data along with a discussion of physical effects that we find to be of relevance. The calculation is proposed as a starting basis for the investigation of (N^{*}) electromagnetic form factors using experimental data about two pion production by real and virtual photons.

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M. Ripani, V. Mokeev, M. Anghinolfi, M. Battaglieri, G. Fedotov, E. Golovach, B. Ishkhanov, M. Osipenko, G. Ricco, V. Sapunenko, M. Taiuti. 2000-01-25. A Phenomenological Description of (π^{-}Δ^{++}) Photo- and Electroproduction in Nucleon Resonance Region. https://doi.org/10.1016/s0375-9474(99)00853-2

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