Abstract
This work assesses the impact of three-body interactions within the ADWA on (d,p) transfer reaction observables used as an indirect method to study astrophysically relevant
processes.
We provide a practical framework for the inclusion of induced three-body effects within the n+p+A system and describe their significance for reaction observables for 40Ca(d,p)41Ca and demonstrate that these terms provide a reduction of between 20-30% to differential cross sections when using a non-local dispersive optical model potential. We are able to reproduce these findings for global non-local potentials, and we investigate the significance of these terms for 26Al, 30P, 34Cl and 56Ni, all nuclei that are known to be important in determining destruction rates in the astrophysical rp-process. For these N=Z nuclei, we show that non-local calculations result in reductions of 10-45% in differential and total cross sections, with the magnitude of these reductions dependent on neutron separation energy Sn and the transferred angular momentum l.
We also investigate the contribution of three-nucleon forces to (d,p) cross sections with both zero-range and finite-range potentials, demonstrating that three-body interactions result in a consistent, non-negligible, contribution to differential cross sections for 26Al and 56Ni (d,p) reactions, particularly at small angles, before going on to show that the contribution of these three-nucleon potentials to reaction cross sections is reduced once induced three-body effects are included.