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arXiv 1111.5070nucl-thnucl-ex
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用复标度法计算7 B的四体共振

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

Takayuki Myo, Yuma Kikuchi, Kiyoshi Kato

摘要:

本文研究了4 He +p+p+p团簇模型中丰质子核7 B的共振谱。在正确的边界条件下,用复标度法将多体共振作为伽莫夫态处理。我们预测了7 B的5个共振态,并计算了6 Be-p组分的光谱因子。6 Be(2+)-p分量的重要性在7 B的几种状态中表现出来,这是7 B的镜像核7 He的共同特征。在只有7 B的基态时,6 Be(2+)态在7 He中的混合比6 He(2+)态大,表明7 B的镜像对称性破缺。这是由于7 B和激发态6 Be(2+)之间的能量差很小,其起源是库仑排斥。

英文摘要:

We study the resonance spectroscopy of the proton-rich nucleus 7B in the 4He+p+p+p cluster model. Many-body resonances are treated on the correct boundary condition as the Gamow states using the complex scaling method. We predict five resonances of 7B and evaluate the spectroscopic factors of the 6Be-p components. The importance of the 6Be(2+)-p component is shown in several states of 7B, which is a common feature of 7He, a mirror nucleus of 7B. For only the ground state of 7B, the mixing of 6Be(2+) state is larger than that of 6He(2+) in 7He, which indicates the breaking of the mirror symmetry. This is caused by the small energy difference between 7B and the excited 6Be(2+) state, whose origin is the Coulomb repulsion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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