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arXiv 2103.01037physics.atom-phhep-ph
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氦原子三重态的完全$α^7\,m$兰姆位移

Complete $α^7\,m$ Lamb shift of helium triplet states

Vojtěch Patkóš, Vladimir A. Yerokhin, Krzysztof Pachucki

摘要:

我们导出了$α^7\,m$对氦原子任意三重态能级贡献的完整公式,并对$2^3S$和$2^3P$态进行了数值计算,从而使这些态的电离能的理论精度提高了一个数量级以上.利用从μ子氦兰姆位移中提取的核电荷半径,我们得到了与测量的$2^3S - 2^3P$跃迁能[X.~ Zheng等人,物理修订信函{ \bf 199},263002(2017)]。同时,我们观察到的$2^3S- 3^3D$和$2^3P - 3^3D$转换与实验的显着差异。

英文摘要:

We have derived the complete formula for the $α^7\,m$ contribution to energy levels of an arbitrary triplet state of the helium atom, performed numerical calculations for the $2^3S$ and $2^3P$ states, and thus improved the theoretical accuracy of ionization energies of these states by more than an order of magnitude. Using the nuclear charge radius extracted from the muonic helium Lamb shift, we obtain the theoretical prediction in excellent agreement with the measured $2^3S - 2^3P$ transition energy [X.~Zheng et al., Phys. Rev. Lett. {\bf 199}, 263002 (2017)]. At the same time we observe significant discrepancies with experiments for the $2^3S- 3^3D$ and $2^3P - 3^3D$ transitions.

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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