Meson-Exchange Model for πN Scatterings and Pion Photoproduction Reactions

楊信男(Shin-Nan Yang)

Chinese Journal of Physics

29卷5期（1991 / 10 / 01）

485 - 496

英文

A meson-exchange model, based on a three-dimensional reduction of Bethe-Salpeter equation, for πN interaction and pion photoproduction reactions is presented. The model is able to describe πN phase shifts and pion photoproductions from nucleon at low energy. Rescattering effects are found to play important role in γπ reaction in most multipole channels. The constructed meson-exchange potential is used to evaluate rescattering effects in the dipole amplitude E0+of π^0 photoproduction from proton near threshold. The results are close to the most recent Mainz data.