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Pion and photon induced reactions on the nucleon in a unitary model

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O. Scholten, A.Y. Korchin, V. Pascalutsa, D. Van Neck
Physics Letters B
384 (1-4), 13-19
1996
A1
Published while none of the authors were employed at the CMM

Abstract 

We present a relativistic calculation of pion scattering, pion photoproduction and Compton scattering on the nucleon in the energy region of the Δ-resonance (upto 450 MeV photon lab energy), in a unified framework which obeys the unitarity constraint. It is found that the recent data on the cross section for nucleon Compton scattering determine accurately the parameters of the electromagnetic nucleon-Δ coupling. The pion-photoproduction partial-wave amplitudes, calculated with parameters fitted to the pion-nucleon and Compton scattering, agree well with the recent Arndt analysis.

DOI 

http://dx.doi.org/10.1016/0370-2693(96)00825-8

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