Separable-Potential Models of the Nucleon-Nucleon Interaction

Abstract

We present four different separable-potential models of the nucleon-nucleon interaction which fit both the low-energy data and the MacGregor-Arndt-Wright phase parameters for partial waves through $J=4\mathrm{}$ in the energy range 0 to 400 MeV. The partial-wave scattering amplitudes resulting from our potentials have driving singularities at real negative values of the complex energy variable, and the appropriate amplitudes contain the deuteron pole and the singlet antibound-state pole at the correct energies. The present work extends and completes the results of an earlier paper.