Abstract
A widely accepted practice for treating deuteron breakup in reactions relies on solving a three-body Schrödinger equation with pairwise , and interactions. However, it was shown in Phys. Rev. C 89, 024605 (2014) that projection of the many-body wave function into the three-body channel results in a complicated three-body operator that cannot be reduced to a sum of pairwise potentials. It contains explicit contributions from terms that include interactions between the neutron and proton via excitation of the target . Such terms are normally neglected. We estimate the first-order contribution of these induced three-body terms and show that applying the adiabatic approximation to solving the model results in a simple modification of the two-body nucleon optical potentials. We illustrate the role of these terms for the case of transfer reactions at incident deuteron energies of 11.8, 20, and 56 MeV, using several parametrizations of nonlocal optical potentials.
- Received 27 February 2019
DOI:https://doi.org/10.1103/PhysRevC.99.064612
©2019 American Physical Society