Elastic p-³He and n-³H scattering with two- and three-body forces

We report on a microscopic calculation of n-³H and p-³He scattering employing the Argonne v₁₈ and v₈^′ nucleon-nucleon potentials with and without additional three-nucleon force. An R-matrix analysis of the p-³He and n-³H scattering data is presented. Comparisons are made for the phase shifts and a selection of measurements in both scattering systems. Differences between our calculation and the R-matrix results or the experimental data can be attributed to only two partial waves (³P₀ and ³P₂). We find the effect of the Urbana IX and the Texas-Los Alamos three-nucleon forces on the phase shifts to be negligible.