Four-body resonances of 7B using the complex scaling method

被引：13
作者：
Myo, Takayuki [1 ,2 ]
Kikuchi, Yuma [2 ]
Kato, Kiyoshi [3 ]
机构：
[1] Osaka Inst Technol, Fac Engn, Osaka 5358585, Japan
[2] Osaka Univ, RCNP, Ibaraki 5670047, Japan
[3] Hokkaido Univ, Div Phys, Grad Sch Sci, Sapporo, Hokkaido 0600810, Japan
来源：
PHYSICAL REVIEW C | 2011年 / 84卷 / 06期
基金：
日本学术振兴会;
关键词：
SHELL-MODEL; SCATTERING; HE-7; STATES;
D O I：
10.1103/PhysRevC.84.064306
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the resonance spectroscopy of the proton-rich nucleus B-7 in the He-4 + p + p + p cluster model. Many-body resonances are treated under the correct boundary condition as Gamow states using the complex scaling method. We predict five resonances of B-7 and evaluate the spectroscopic factors of the Be-6-p components. The importance of the Be-6(2(+))-p component is shown in several states of B-7; this is a common feature of He-7, a mirror nucleus of B-7. For only the ground state of B-7, the mixing of the Be-6(2(+)) state is larger than that of He-6(2(+)) in He-7, which indicates a breaking of mirror symmetry. This is caused by the small energy difference between B-7 and the excited Be-6(2(+)) state, the origin of which is Coulomb repulsion.
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页数：9
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