Abstract
Phys. Rev. Lett. 124, 162501 (2020) 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.