Isoscalar neutron-proton pairing and SU(4)-symmetry breaking in Gamow-Teller transitions
文献类型：期刊论文
| 作者 | Kaneko, K.1; Sun, Y.2,3,4; Mizusaki, T.5 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2018-05-29 |
| 卷号 | 97期号:5页码:054326 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.97.054326 |
| 英文摘要 | The isoscalar neutron-proton pairing is thought to be important for nuclei with equal number of protons and neutrons but its manifestation in structure properties remains to be understood. We investigate the Gamow-Teller (GT) transitions for the f(7/2)-shell nuclei in large-scale shell-model calculations with the realistic Hamiltonian. We show that the isoscalar T = 0, J(pi) = 1(+) neutron-proton pairing interaction plays a decisive role for the concentration of GT strengths at the first-excited 1(1)(+) state in Sc-42, and that the suppression of these strengths in V-46, Mn-50, and Co-54 is mainly caused by the spin-orbit force supplemented by the quadrupole-quadrupole interaction. Based on the good reproduction of the charge-exchange reaction data, we further analyze the interplay between the isoscalar and isovector pairing correlations. We conclude that even for the most promising A = 42 nucleiwhere the SU(4) isoscalar-isovector-pairing symmetry is less broken, the probability of forming an isoscalar neutron-proton pairing condensation is less than 60% as compared to the expectation at the SU(4)-symmetry limit. |
| WOS关键词 | SOLVABLE MODEL ; PF-SHELL ; NUCLEI ; EXCITATIONS ; ISOVECTOR |
| 资助项目 | National Key Program for S&T Research and Development[2016YFA0400501] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000433289200001 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/56794]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Sun, Y. |
| 作者单位 | 1.Kyushu Sangyo Univ, Dept Phys, Fukuoka, Fukuoka 8138503, Japan 2.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China 3.Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 5.Senshu Univ, Inst Nat Sci, Tokyo 1018425, Japan |
| 推荐引用方式 GB/T 7714 | Kaneko, K.,Sun, Y.,Mizusaki, T.. Isoscalar neutron-proton pairing and SU(4)-symmetry breaking in Gamow-Teller transitions[J]. PHYSICAL REVIEW C,2018,97(5):054326. |
| APA | Kaneko, K.,Sun, Y.,&Mizusaki, T..(2018).Isoscalar neutron-proton pairing and SU(4)-symmetry breaking in Gamow-Teller transitions.PHYSICAL REVIEW C,97(5),054326. |
| MLA | Kaneko, K.,et al."Isoscalar neutron-proton pairing and SU(4)-symmetry breaking in Gamow-Teller transitions".PHYSICAL REVIEW C 97.5(2018):054326. |
入库方式： OAI收割
来源：近代物理研究所
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