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arXiv 1603.03136nucl-thhep-exhep-phnucl-ex
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$^{13}$ C的电偶极矩

Electric dipole moment of $^{13}$C

Nodoka Yamanaka, Taiichi Yamada, Emiko Hiyama, Yasuro Funaki

摘要:

首次在$α$ -集团模型中计算了由等矢量CP-奇π交换核力产生的$^{13}$ C的电偶极矩,较好地描述了$^{13}$ C核的低激发态结构.发现$^{13}$ C的EDM与中子EDM和等矢量CP奇核耦合的线性关系为$d_{^{13}{\rm C}} = -0.33 d_n - 0.0020 \bar G_π^{(1)}$。由于$1/2^-_1$态和相反宇称态($1/2^+$)的结构差异,CP-奇核耦合的线性增强因子小于氘核耦合的线性增强因子。我们澄清的结构中发挥的作用,在增强的EDM。这一结果为寻找其他具有大增强因子的核提供了很好的指导原则。我们还提到了$^{13}$ C的EDM在确定超越标准模型的新物理中的作用。

英文摘要:

We calculate for the first time the electric dipole moment (EDM) of $^{13}$C generated by the isovector CP-odd pion exchange nuclear force in the $α$-cluster model, which describes well the structures of low lying states of the $^{13}$C nucleus. The linear dependence of the EDM of $^{13}$C on the neutron EDM and the isovector CP-odd nuclear coupling is found to be $d_{^{13}{\rm C}} = -0.33 d_n - 0.0020 \bar G_π^{(1)}$. The linear enhancement factor of the CP-odd nuclear coupling is smaller than that of the deuteron, due to the difference of the structure between the $1/2^-_1$ state and the opposite parity ($1/2^+$) states. We clarify the role of the structure played in the enhancement of the EDM. This result provides good guiding principles to search for other nuclei with large enhancement factor. We also mention the role of the EDM of $^{13}$C in determining the new physics beyond the standard model.

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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