Unified Approach to Pion Absorption and Double-Charge-Exchange Reactions

摘要

Pion absorption and DCX Reactions are studied by using a unified theory of NN and pi d scattering. It is shown that the theory can describe simultaneously the ( pi exp + ,pp), ( pi exp - ,pn) and ( pi exp - , pi exp + ) reactions of sup 3 He. The study of absorption on heavy nuclei indicates the importance of inelastic absorption processes. It is suggested that the DCX reaction on heavy nuclei also involves multi-step processes which cannot be solved within the conventional distorted-wave theory. 4 refs. (ERA citation 10:035181)