Meson-Baryon potentials by one-hadron-exchange mechanisms with gaussian sources

摘要

Meson-baryon potentials in momentum space are proposed on the basis of one-hadronexchange mechanisms. The Gaussian source parameters and SU(3) coupling constants are determined so as to reproduce the φN and KN scatterings at low energies, fixing all the parameters predetermined in the baryon-baryon potentials proposed previously. Using the same values, we predict the K?N-φδ-φσ coupled-channel potentials. To explain the experimental cross sections and δ(1405) as a quasibound state, we need an overall factor of approximately 0.7.