The Two-Nucleon System beyond the Pion Threshold
A model is developed for the hadronic and electromagnetic interaction in the two-nucleon system above pion threshold in the framework of meson, nucleon and Δ degrees of freedom. It is based on time-ordered perturbation theory and includes full meson retardation in potentials and exchange currents as well as loop contributions to the nucleonic one-body current. Results for some selected processes are discussed.
KeywordsSpin Asymmetry Final State Interaction Unpolarized Cross Section Meson Exchange Current Pion Threshold
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