Meson retardation in deuteron photodisintegration above pi-threshold

Abstract

Photodisintegration of the deuteron above pi-threshold is studied in a coupled channel approach including N Delta- and pi d-channels with pion retardation in potentials and exchange currents. A much improved description of total and differential cross sections in the energy region between pi-threshold and 400-450 MeV is achieved.

Comments: 12 pages revtex including 5 postscript figures