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.
Categories: nucl-th nucl-ex