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

Ayyad, Y.; Lee, J.; Tamii, A.; Lay, J.; MACCHIAVELLI, A.; Aoi, N.; Brown, B.; Fujita, H.; Fujita, Y.; Ganioglu, Ela; Hatanaka, K.; Hashimoto, T.; Ito, T.; Kawabata, T.; Li, Z.; LIU, H.; Matsubara, H.; Miki, K.; Ong, H.; Potel, G.; SUGAI, I.; Susoy, Gülfem; VITTURI, A.; Watanabe, H.; Yokota, N.; Zenihiro, J.

doi:10.1103/physrevc.96.021303

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

Atıf İçin Kopyala

Ayyad Y., Lee J., Tamii A., Lay J. A., MACCHIAVELLI A. O., Aoi N., ...Daha Fazla

PHYSICAL REVIEW C, cilt.96, sa.2, 2017 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 96 Sayı: 2
Basım Tarihi: 2017
Doi Numarası: 10.1103/physrevc.96.021303
Dergi Adı: PHYSICAL REVIEW C
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
İstanbul Üniversitesi Adresli: Evet

Özet

Neutron-proton pairing correlations are investigated in detail via np transfer reactions in N = Z sd-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.