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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, dₑ=5.8×10^-40, d_μ=1.4×10^-38, and d_τ=-7.3×10^-38 e cm, with an error bar of 70%, exceeding the conventionally known four-loop level elementary contribution by several orders of magnitude.
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Yamaguchi et al. (2020) studied this question.
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