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Investigating neutron-proton pairing in sd-shell nuclei via (p,He3) and (He3,p) transfer reactions

Y. Ayyad et al.
Phys. Rev. C 96, 021303(R) – Published 23 August 2017

Abstract

Neutron-proton pairing correlations are investigated in detail via np transfer reactions in N=Zsd-shell nuclei. In particular, we study the cross-section ratio of the lowest 0+ and 1+ states as an observable to quantify the interplay between T=0 (isoscalar) and T=1 (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 sd-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.

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  • Received 15 June 2017

DOI:https://doi.org/10.1103/PhysRevC.96.021303

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 96, Iss. 2 — August 2017

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