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arXiv · 1906.11984

Elastic Antiproton-Nucleus Scattering from Chiral Forces

Matteo Vorabbi·Michael Gennari·Paolo Finelli·Carlotta Giusti·Petr Navrátil
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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.

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Matteo Vorabbi, Michael Gennari, Paolo Finelli, Carlotta Giusti, Petr Navrátil. 2020-09-15. Elastic Antiproton-Nucleus Scattering from Chiral Forces. https://doi.org/10.1103/physrevlett.124.162501

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