High-precision covariant one-boson-exchange potentials for np scattering below 350 MeV

Abstract

Using the covariant spectator theory (CST), we have found one-boson-exchange (OBE) potentials that fit the 2006 world np data below 350 MeV with a χ2/N data very close to 1, for a total of 3788 data. Our potentials have significantly fewer adjustable parameters than previous high-precision potentials, and they also reproduce the experimental triton binding energy without introducing additional irreducible three-nucleon forces.