# Elastic Antiproton-Nucleus Scattering from Chiral Forces

## TL;DR

This paper presents the first microscopic calculation of elastic antiproton-nucleus scattering using chiral forces, achieving good agreement with experimental data and demonstrating theoretical convergence.

## Contribution

It introduces a fully microscopic approach combining chiral antiproton-nucleon interactions with ab initio target densities for the first time.

## Key findings

- Results agree well with experimental data.
- Chiral interaction orders show expected convergence.
- Method provides a new microscopic framework for antiproton scattering.

## Abstract

Elastic scattering of antiprotons off $^4$He, $^{12}$C, and $^{16,18}$O is described for the first time with a totally microscopic approach based on the calculation of an optical potential (OP) describing the antiproton-target interaction. The OP is derived using the recent antiproton-nucleon ($\bar{p}N$) chiral interaction to calculate the $\bar{p}N$ $t$ matrix, while the target densities are computed with the ab initio no-core shell model using chiral interactions as well. Our results are in a good agreement with the existing experimental data and the results computed at different chiral orders of the $\bar{p}N$ interaction display the convergence pattern expected from the theory.