Neutron-${}^3$H scattering above the four-nucleon breakup threshold

TL;DR

This paper solves four-body equations for neutron-3H scattering above the four-nucleon breakup threshold, improving computational methods to achieve accurate results that align well with experimental data.

Contribution

It introduces an improved complex energy method with special weights for solving four-body scattering equations, enhancing accuracy and convergence.

Findings

Achieved fully converged results with realistic nuclear interactions.

Provided a satisfactory description of existing neutron-3H elastic scattering data.

Enhanced the practical applicability of four-body scattering calculations.

Abstract

The four-body equations of Alt, Grassberger and Sandhas are solved for the neutron-${}^3$H scattering at energies above the four-nucleon breakup threshold. The accuracy and practical applicability of the employed complex energy method is significantly improved by the use of integration with the special weights. This allows to obtain fully converged results with realistic nuclear interactions. A satisfactory description of the existing neutron-${}^3$H elastic scattering data is obtained.