Faddeev calculations of proton-deuteron radiative capture with exchange currents

Abstract

$\mathrm{pd}$ capture processes at various energies have been analyzed based on solutions of three-nucleon (3N)-Faddeev equations and using modern $\mathrm{NN}$ forces. The application of the Siegert theorem is compared to the explicit use of $\ensuremath{\pi}$- and $\ensuremath{\rho}$-like exchange currents connected to the AV18 $\mathrm{NN}$ interaction. Overall good agreement with cross sections and spin observables has been obtained but leaving room for improvement in some cases. Feasibility studies for three-nucleon forces (3NF's) consistently included in the 3N continuum and the 3N bound state have been performed as well.