CONTRIBUTION OF INELASTICITY IN NUCLEON-NUCLEON-SCATTERING TO DEUTERON PHOTODISINTEGRATION

Final-state interaction in deuteron photodisintegration is studied in detail. The generalized N/D method is used to construct the amplitude of nucleon-nucleon (N/N) scattering on the basis of data from phase-sh ift analyses (NN phase shifts, N Delta phase shifts, and inelasticity parameters). The NN amplitude obtained in this way is used as the bloc k of final-state interaction. It is shown that the total cross section for E(gamma) up to 50 MeV can be reproduced without invoking exchange currents, provided that inelasticity and final-state interaction are taken into account as completely as possible. Nucleon-nucleon scatteri ng is described in all channels characterized by large inelasticities for T-lab less than or equal to 1 GeV. A relativistic calculation show s that the D-1(2), P-3(2), and F-3(3) waves make significant contribut ions to the total disintegration cross section in the region of isobar production.