Asymmetry and angular distribution of deuteron photodisintegration in the 20--60 MeV range

Theoretical results on the asymmetry function and angular distribution parameters for deuteron photodisintegration are obtained by adding the one- and two-body relativistic corrections to the charge density and meson exchange corrections to the current density to the normal E1, M1, and E2 multipoles and compared with the recent measurements of De Pascale et al. Phenomenologically, it is found that agreement with the angular distribution coefficients which depend on the E2 transitions can be improved if the E2 radial matrix elements are reduced by about 15%. The physical process responsible for this reduction is not clear