This Letter suggests that $\overline{p}$-nucleus scattering might display resonant phenomena at certain energies, arising from the orbiting of the $\overline{p}$ in a pocket of nuclear attraction extending beyond the region of strong absorption. This results in resonances of typical widths 15-150 MeV in the 180° excitation function and large polarizations for large-angle elastic scattering.

• Received 30 October 1980

DOI:https://doi.org/10.1103/PhysRevLett.46.702