论文标题

在标准模型中,对带电瘦素的电偶极矩的长距离贡献很大

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

论文作者

Yamaguchi, Yasuhiro, Yamanaka, Nodoka

论文摘要

我们使用强子有效模型在标准模型中重新评估了带电液体的电偶极矩(EDM)。我们发现,出乎意料的是,由强子级别长距离效应生成的大型EDM,$ d_e = {5.8 \ times 10^{ - 40}} $,$d_μ= {1.4 \ times 10^{ - 38}} $,和$d_τ= {-7.3 \ times 10^{-38} $ ecnive of indry of in 70 nrive in 70四环水平基本贡献由几个数量级。

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.

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