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. Potel; I. Sugai; G. Susoy; A. Vitturi; H. D. Watanabe; N. Yokota; J. Zenihiro

doi:10.1103/PhysRevC.96.021303

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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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 language	English
Article number	021303
Journal	Physical Review C
Volume	96
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.96.021303
Publication status	Published - 23-08-2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.96.021303

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Ayyad, Y., Lee, J., Tamii, A., Lay, J. A., Macchiavelli, A. O., Aoi, N., Brown, B. A., Fujita, H., Fujita, Y., Ganioglu, E., Hatanaka, K., Hashimoto, T., Ito, T., Kawabata, T., Li, Z., Liu, H., Matsubara, H., Miki, K., Ong, H. J., ... Zenihiro, J. (2017). Investigating neutron-proton pairing in sd -shell nuclei via (p, He 3) and (He 3,p) transfer reactions. Physical Review C, 96(2), Article 021303. https://doi.org/10.1103/PhysRevC.96.021303

@article{619a21f66c9247d99de63204ee260f01,

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

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.",

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

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = aug,

day = "23",

doi = "10.1103/PhysRevC.96.021303",

language = "English",

volume = "96",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

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Ayyad, Y, Lee, J, Tamii, A, Lay, JA, Macchiavelli, AO, Aoi, N, Brown, BA, Fujita, H, Fujita, Y, Ganioglu, E, Hatanaka, K, Hashimoto, T, Ito, T, Kawabata, T, Li, Z, Liu, H, Matsubara, H, Miki, K, Ong, HJ, Potel, G, Sugai, I, Susoy, G, Vitturi, A, Watanabe, HD, Yokota, N & Zenihiro, J 2017, 'Investigating neutron-proton pairing in sd -shell nuclei via (p, He 3) and (He 3,p) transfer reactions', Physical Review C, vol. 96, no. 2, 021303. https://doi.org/10.1103/PhysRevC.96.021303

TY - JOUR

T1 - Investigating neutron-proton pairing in sd -shell nuclei via (p, He 3) and (He 3,p) transfer reactions

AU - Ayyad, Y.

AU - Lee, J.

AU - Tamii, A.

AU - Lay, J. A.

AU - Macchiavelli, A. O.

AU - Aoi, N.

AU - Brown, B. A.

AU - Fujita, H.

AU - Fujita, Y.

AU - Ganioglu, E.

AU - Hatanaka, K.

AU - Hashimoto, T.

AU - Ito, T.

AU - Kawabata, T.

AU - Li, Z.

AU - Liu, H.

AU - Matsubara, H.

AU - Miki, K.

AU - Ong, H. J.

AU - Potel, G.

AU - Sugai, I.

AU - Susoy, G.

AU - Vitturi, A.

AU - Watanabe, H. D.

AU - Yokota, N.

AU - Zenihiro, J.

PY - 2017/8/23

Y1 - 2017/8/23

N2 - 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.

AB - 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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DO - 10.1103/PhysRevC.96.021303

M3 - Article

AN - SCOPUS:85028691354

SN - 2469-9985

VL - 96

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 021303

ER -

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

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