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Reevaluation of heavy-fermion-induced electron EDM at three loops

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arxiv 2207.01679 v1 pith:JJEQIEJG submitted 2022-07-04 hep-ph hep-exnucl-th

Reevaluation of heavy-fermion-induced electron EDM at three loops

classification hep-ph hep-exnucl-th
keywords edmselectronlimitsadditionalapplyingbeforebottombounds
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Motivated by improved limits on electric dipole moments (EDMs), we revisit the three-loop light-by-light mechanism that transmits $CP$ violation from a heavy fermion to a light one. Applying it to the electron EDM induced by EDMs of heavier flavors, we find additional contributions at the order $ m_e/m_\mu $ or $m_e/m_\tau$ that were missing before and that make the result 1.4 times larger. Consequently we improve bounds on the tau EDM, and update indirect limits on the muon EDM as well as charm and bottom quark color EDMs.

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Cited by 3 Pith papers

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    Explores q² dependence and imaginary parts of tau g-2 and EDM in SMEFT and 2HDM, proposing methods to measure them at Belle II and STCF to improve a_τ bounds by over an order of magnitude.

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