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

Abstract

Antiproton scattering off ^3\He and ^4\He targets is considered at beam energies below 300 MeV within the Glauber-Sitenko approach, utilizing the $\bar N N$ amplitudes of the J\"ulich model as input. A good agreement with available data on differential \bar p ^4\He cross sections and on \bar p ^3\He and \pbar ^4\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.Comment: 11 pages, 6 figure