Investigating neutron-proton pairing in sd -shell nuclei via (p, He 3) and (He 3,p) transfer reactions

Y. Ayyad, J. Lee, A. Tamii, J. A. Lay, A. O. Macchiavelli, N. Aoi, B. A. Brown, H. Fujita, Y. Fujita, E. Ganioglu, K. Hatanaka, T. Hashimoto, T. Ito, T. Kawabata, Z. Li, H. Liu, H. Matsubara, K. Miki, H. J. Ong, G. PotelI. Sugai, G. Susoy, A. Vitturi, H. D. Watanabe, N. Yokota, J. Zenihiro

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5 Citations (Scopus)

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.

Original languageEnglish
Article number021303
JournalPhysical Review C
Volume96
Issue number2
DOIs
Publication statusPublished - 23-08-2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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