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

TL;DR

This paper develops high-precision covariant one-boson-exchange potentials for neutron-proton scattering below 350 MeV using the Covariant Spectator Theory, achieving excellent data fit with fewer parameters and reproducing the triton binding energy without extra forces.

Contribution

The paper introduces a covariant OBE potential within CST that fits np scattering data with fewer parameters and reproduces the triton binding energy without three-nucleon forces.

Findings

Achieved /N_data close to 1 for 3788 data points

Fewer adjustable parameters than previous models

Reproduces triton binding energy without three-nucleon forces

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 \chi^2/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.