Abstract
Previous analytical formulas in the Glauber model for high-energy
nucleus-nucleus collisions developed by Wong are utilized and extended
to study Antiproton-nucleus annihilations for both high and low
energies, after taking into account the effects of Coulomb and nuclear
interactions, and the change of the antiproton momentum inside a
nucleus. The extended analytical formulas capture the main features
of the experimental antiproton-nucleus annihilation cross sections for
all energies and mass numbers. At high antiproton energies, they
exhibit the granular property for the lightest nuclei and the
black-disk limit for the heavy nuclei. At low antiproton energies,
they display the effect of the antiproton momentum increase due to the
nuclear interaction for the light nuclei, and the effect of the
magnification due to the attractive Coulomb interaction for the heavy
nuclei.
