RECENT DEVELOPMENTS INVOLVING ISOBARS IN NUCLEAR SYSTEMS — Workshop D

1977

Developments of the last year or two concerning the role of isobar resonances in nuclear systems are reviewed. Special attention is given to the influence of the A isobar in the nucleon-nucleon force and to the possibility of the existence of NA or AA bound states. Also mentioned are the effects of the A in polarized pp scattering, in proton-nucleus scattering and in nuclear matter and the ground states of finite nuclei. Recent experiments intended to observe preexisting isobar configurations in nuclei are briefly surveyed. Approaches to pion-nucleus scattering based on NA interactions are discussed.