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Electroexcitation of nucleon resonances at Q^2=0.65 GeV/c^2 from a combined analysis of single- and double-pion electroproduction data

I. G. Aznauryan·V. D. Burkert·G. V. Fedotov·B. S. Ishkhanov·V. I. Mokeev
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Abstract

Data on single- and double-charged pion electroproduction off protons are successfully described in the second and third nucleon resonance regions with common N* photocouplings. The analysis was carried out using separate isobar models for both reactions. From the combined analysis of two exclusive channels, the gamma* p --> N*+ helicity amplitudes are obtained for the resonances P11(1440), D13(1520), S31(1620), S11(1650), F15(1680), D33(1700), D13(1700), and P13(1720) at Q2=0.65 GeV/c^2.

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I. G. Aznauryan, V. D. Burkert, G. V. Fedotov, B. S. Ishkhanov, V. I. Mokeev. 2005-10-21. Electroexcitation of nucleon resonances at Q^2=0.65 GeV/c^2 from a combined analysis of single- and double-pion electroproduction data. https://doi.org/10.1103/physrevc.72.045201

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