D(p,p)D elastic scattering with rigorous Coulomb treatment

Abstract

Low-energy D(p,p)D elastic scattering using a rigorous Coulomb treatment in momentum space is considered. The treatment is an extension of an exact two-body Coulomb theory—different from the approximate method which is based on a screened Coulomb potential. In contrast to the latter, the two-body Coulomb potential employed is fully equivalent to the pure Coulomb potential in configuration space. It is shown that the approximation based on the Coulomb half-shell function ensures the reliability of the renormalization method. The difference between the rigorous treatment and the approximate method is demonstrated by numerical results.