Low energy n-3H scattering:: A novel testground for nuclear interactions -: art. no. 034004

Low energy n-H-3 elastic cross sections near the resonance peak are calculated by solving the four-nucleon problem with realistic NN interactions. Three different methods-Alt, Grassberger, and Shandas; hyperspherical harmonics; and Faddeev-Yakubovsky-have been used and their respective results are compared. We conclude on a failure of the existing NN forces to reproduce the n-H-3 total cross section.