Abstract
Simple -nucleus optical potentials constructed from phase shifts yield poor fits to elastic scattering from He and C below 75 MeV. Forcing a fit gives potentials which are pion producing or in violation of unitarity. The forward position (∼65°) and breadth of the minimum are shown to be partially responsible. These features are also shown to require a much stronger -wave interaction with nuclei than that derived from scattering.
NUCLEAR REACTIONS Scattering theory for elastic pions, light nuclei, low energy. Model shortcomings related to features of data.
- Received 16 June 1975
DOI:https://doi.org/10.1103/PhysRevC.13.1334
©1976 American Physical Society