Abstract
Neutron-proton pairing correlations are investigated in detail via transfer reactions in -shell nuclei. In particular, we study the cross-section ratio of the lowest and states as an observable to quantify the interplay between (isoscalar) and (isovector) pairing strengths. The experimental results are compared to second-order distorted-wave Born approximation calculations with proton-neutron amplitudes obtained in the shell-model formalism using the universal -shell interaction B. Our results suggest underestimation of the nonneglible isoscalar pairing strength in the shell-model descriptions at the expense of the isovector channel.
- Received 15 June 2017
DOI:https://doi.org/10.1103/PhysRevC.96.021303
©2017 American Physical Society