Nucleus?Nucleus Elastic Scattering at Ultra-high Energies

Abstract

Nucleus-nucleus elastic scattering at ultra-high energy is studied within the scheme of Glauber multiple scattering and also within the geometrical picture of the Chou-Yang model. Both models offer a reasonable explanation of a recent CERN experiment on a-a elastic scattering and their differences are discussed. Results are presented for (X-a elastic scattering at ultra-high energies, and for a-9Be, a_1 2C, a_1 60 and a_24Mg elastic scatterings at currently accessible energies. The A dependence of the total cross section is approximately An with n ~ 0�55.