Abstract
A dynamical model for [ital S]- and [ital P]-wave correlated two-pion exchange between two nucleons is presented, starting from corresponding [ital N[bar N]][r arrow][pi][pi] amplitudes in the pseudophysical region, which have been constructed from nucleon and [Delta]-isobar exchange Born terms and a meson exchange model of [pi][pi] scattering which satisfactorily describes the empirical [pi][pi] data. It is demonstrated that the results have quite different characteristics, in both strength and range, compared to (sharp mass) [sigma][prime], [rho] exchange as used in the Bonn potential. Consequences for the description of high partial wave [ital NN] scattering phase shifts are discussed.
Published Version
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