Energy-dependent Lorentz covariant parameterization of the NN interaction between 50 and 200 MeV

TL;DR

This paper develops an energy-dependent Lorentz covariant model for nucleon-nucleon scattering amplitudes between 50 and 200 MeV, accurately describing observables and extendable to 40-300 MeV.

Contribution

It introduces a novel Lorentz covariant parameterization based on Yukawa-type meson exchanges for NN interactions in the specified energy range.

Findings

Accurately describes NN scattering observables between 50 and 200 MeV.

Can be extrapolated to energies between 40 and 300 MeV.

Provides a Lorentz covariant framework for NN interaction modeling.

Abstract

For laboratory kinetic energies between 50 and 200 MeV, we focus on generating an energy-dependent Lorentz covariant parameterization of the on-shell nucleon-nucleon (NN) scattering amplitudes in terms of a number of Yukawa-type meson exchanges in first-order Born approximation. This parameterization provides a good description of NN scattering observables in the energy range of interest, and can also be extrapolated to energies between 40 and 300 MeV.