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arXiv 2003.08195hep-phhep-exnucl-th
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标准模型中带电轻子电偶极矩的大的长距离贡献

Large long-distance contributions to the electric dipole moments of charged leptons in the standard model

Yasuhiro Yamaguchi, Nodoka Yamanaka

摘要:

利用强子有效模型重新计算了标准模型中带电轻子的电偶极矩。我们发现意外的大EDM产生的强子水平的长距离效应,$d_e = { 5.8 \times 10^{-40} }$,$d_μ= { 1.4 \times 10^{-38}}$,和$d_τ= { -7.3 \times 10^{-38} }$ ECM,与70\%的误差棒,超过了传统的已知的四圈水平的基本贡献的几个数量级。

英文摘要:

We reevaluate the electric dipole moment (EDM) of charged leptons in the standard model using hadron effective models. We find unexpectedly large EDM generated by the hadron level long-distance effect, $d_e = { 5.8 \times 10^{-40} }$, $d_μ= { 1.4 \times 10^{-38}}$, and $d_τ= { -7.3 \times 10^{-38} }$ ecm, with an error bar of 70\%, exceeding the conventionally known four-loop level elementary contribution by several orders of magnitude.

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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