- Scattering at Intermediate Energies: Applicability of Orthogonality Condition Model and Upper Limit of Isoscalar Meson-Nucleon Coupling Constants Inferred from Potential Tail

Abstract

Intermediate energy a-a scattering is studied by the resonating group method with the Coulomb exchange kernel, in order to resolve the discrepancy between the potential tail for the S, D and G waves and that for higher partial waves which was reported in a previous phenomenological analysis_ but hardly understandable from a microscopic point of view. It is shown that this discrepancy can be removed if we employ the new solution of the pha;;e shift analysis. Validity of the orthogonality condition model in the inelastic region is shown if a suitable imaginary potential ·is added to the direct potential. The real phase shifts of the !-wave dominated by the direct potential tail restrict the coupling constants of isoscalar mesons with nucleon as g62/4n=3.5~6 and g.'/4n=8~11.