Relativistic Effects and the Role of Heavy-Meson Exchange in Deuteron Photodisintegration

Abstract.

Relativistic effects and the role of heavy-meson exchange in deuteron photodisintegration are studied systematically for photon energies below the pion-production threshold. In a (p/M)-expansion, all leading-order relativistic one-body and -exchange as well as all static heavy-meson exchange currents consistent with the Bonn momentum-space one-boson-exchange potentials are included. In addition, one- and two-body boost effects have been investigated. Sizeable effects from the various two-body contributions beyond -exchange have been found in almost every observable considered, i.e., differential cross section and single-polarization observables.