Four-nucleon scattering: a new numerical approach

The AGS equations are solved for n3H and p3He scattering including the Coulomb interaction. Comparison with previous work confirms the accuracy of the calculation and helps clarify a number of issues related to the n3H total cross section at the peak of the resonance region, as well as an Ay deficiency in p3He. Calculations are fully converged in terms of NN partial waves and involve no uncontrolled approximations.