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arXiv 0803.3366nucl-th
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核极化和张量耦合对超核磁矩的影响

Core Polarization and Tensor Coupling Effects on Magnetic Moments of Hypernuclei

J. M. Yao, H. F. Lu, G. Hillhouse, J. Meng

摘要:

在Dirac方程下,研究了具有标量、矢量和张量势的$^{13}_Λ$ C、$^{17}_Λ$ O和$^{41}_Λ$ Ca $Λ$ -超核中,核极化和张量耦合对磁矩的影响.发现$Λ$张量耦合抑制了芯极化对磁矩的影响。$Λ$张量势大大降低了$p_Λ$态的自旋轨道分裂。然而,几乎相同的磁矩得到的超子波函数通过狄拉克方程,无论有或没有$Λ$张量势的电磁流顶点。发现$p_Λ$态的磁矩偏离Schmidt值随核质量数的增加而增加。

英文摘要:

The effects of core polarization and tensor coupling on the magnetic moments in $^{13}_Λ$C, $^{17}_Λ$O, and $^{41}_Λ$Ca $Λ$-hypernuclei are studied in the Dirac equation with scalar, vector and tensor potentials. It is found that the effect of core polarization on the magnetic moments is suppressed by $Λ$ tensor coupling. The $Λ$ tensor potential reduces the spin-orbit splitting of $p_Λ$ states considerably. However, almost the same magnetic moments are obtained using the hyperon wave function obtained via the Dirac equation either with or without the $Λ$ tensor potential in the electromagnetic current vertex. The deviations of magnetic moments for $p_Λ$ states from the Schmidt values are found to increase with nuclear mass number.

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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