Antiproton scattering off ${}^{3}He$ and ${}^{4}He$ nuclei at low and intermediate energies

Abstract

Antiproton scattering off ${}^3\text{He}$ and ${}^4\text{He}$ targets is considered at beam energies below 300 MeV within the Glauber-Sitenko approach, utilizing the $\bar{N}N$ amplitudes of the Jülich model as input. A good agreement with available data on differential ${\bar{p}}^4\text{He}$ cross sections and on ${\bar{p}}^3\text{He}$ and ${\text{pbar}}^4\text{He}$ reaction cross sections is obtained. Predictions for polarized total ${\bar{p}}^3$He cross sections are presented, calculated within the single-scattering approximation and including Coulomb-nuclear interference effects. The kinetics of the polarization buildup is discussed.

Comments: 11 pages, 6 figures