New parameterization of effective nucleon-nucleon $t$-matrix interaction for scattering at intermediate energies

TL;DR

This paper introduces a new parameterization of the nucleon-nucleon t-matrix interaction model for intermediate energies, improving the fit to experimental data from 100 to 1100 MeV using modern partial-wave analysis.

Contribution

It provides a revised parameterization of the Love and Franey model based on updated partial-wave analysis, enhancing the accuracy of nucleon-nucleon scattering predictions at intermediate energies.

Findings

Improved fit to differential cross section data

Accurate predictions of analyzing power and spin correlation

Enhanced model consistency with experimental measurements

Abstract

The model suggested by Love and Franey for description of the nucleon-nucleon interaction was used as the base. The new fitting of the model parameters was done in the energy range from 100 MeV up to 1100 MeV. It is based on the modern partial-wave-analysis solution for NN-amplitudes. The three observables: differential cross section, vector analyzing power, and spin correlation coefficient -- were obtained at every energy. The results are compared with existing the experimental data.