Momentum-space second-order pion-nucleus potential including medium effects in the $\Delta(1232)$ region
Nuclear Theory
2024-02-27 v2 High Energy Physics - Phenomenology
Abstract
In this work, we develop an updated model for pion-nucleus scattering in the framework of the distorted wave impulse approximation in momentum space. We construct the second-order pion-nucleus potential, which involves analysis of pion-nucleus elastic scattering as a solution of the Lippmann-Schwinger equation. The potential is based on the individual pion-nucleon scattering amplitudes extracted from SAID, and its second-order correction is presented in detail. We estimate optimal energy-independent parameters of the potential by a multi-energy fit of the pion-C total, reaction, and differential elastic cross sections. We show the predictive power by applying it to pion elastic scattering on O, Si, and Ca.
Keywords
Cite
@article{arxiv.2306.04913,
title = {Momentum-space second-order pion-nucleus potential including medium effects in the $\Delta(1232)$ region},
author = {Viacheslav Tsaran and Marc Vanderhaeghen},
journal= {arXiv preprint arXiv:2306.04913},
year = {2024}
}