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arXiv 1402.7040hep-ph
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$m α^7$阶电子偶素超精细分裂:双光子交换通道中的光-光散射

Positronium hyperfine splitting at order $m α^7$: light-by-light scattering in the two-photon-exchange channel

Gregory S. Adkins, Richard N. Fell

摘要:

计算了正负电子交换双光子过程中光-光散射过程对正电子偶素$m α^7$级超精细分裂的贡献。我们的结果是$ΔE = -0.235355(8) m α^4 \left ( \fracαπ \right )^3 = -1.034 kHz$。作为检查我们的方法,我们证实了早期的评估类似的修正约束系统(如μ)与不等质量。

英文摘要:

We have calculated the contribution to the positronium hyperfine splitting at order $m α^7$ of the light-by-light scattering process in the exchange of two photons between the electron and positron. Our result is $ΔE = -0.235355(8) m α^4 \left ( \fracαπ \right )^3 = -1.034 kHz$. As a check of our approach we confirm earlier evaluations of the analogous correction for a bound system (such as muonium) with unequal masses.

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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