Deuteron photodisintegration

Abstract
The photodisintegration of the deuteron is investigated with emphasis on the differential cross section D(γ,p)n in the forward direction. However the angular distribution as well as the γ asymmetry are also given. The calculation takes relativistic, pion exchange, and Δ(1232) corrections into account. Nonlocal nucleon-nucleon interactions are treated in a manner in which gauge invariance is respected. The differences between various approximations beyond the Siegert limit are discussed. The role of the D-state probability of the deuteron in the forward direction is studied and the difference of two gauges before and after the inclusion of various corrections are presented. Finally a comparison with experiment is carried out.