A Higher-Order Calculation of $np$ Scattering in Cut-Off Effective Field Theory

C. H. Hyun, T. -S. Park, D. -P. Min

We report a next-to-leading-order (NLO) chiral perturbation theory calculation of the neutron-proton scattering cross section in the ${}^1{S}_0$ channel using a cut-off regularizatio…