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

Abstract

All realistic potential models for the two-nucleon interaction are to some extent based on boson exchange. However, in order to achieve an essentially perfect fit to the scattering data, characterized by a chi2/Ndata ~ 1, previous potentials have abandoned a pure one boson-exchange mechanism (OBE). Using a covariant theory, we have found a OBE potential that fits the 2006 world np data below 350 MeV with a chi2/Ndata = 1.06 for 3788 data. Our potential has fewer adjustable parameters than previous high-precision potentials, and also reproduces the experimental triton binding energy without introducing additional irreducible three-nucleon forces.

4 pages; revised version with augmented data sets; agrees with published version

References in corpus (8)

• An accurate nucleon-nucleon potential with charge-independence breaking
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• Relativistic calculation of the triton binding energy and its implications
• Covariant equations for the three-body bound state
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