Radiative Seesaw Mechanism for Charged Leptons

Abstract

We discuss a mechanism where charged lepton masses are derived from one-loop diagrams mediated by particles in a dark sector including a dark matter candidate. We focus on a scenario where the muon and electron masses are generated at one loop with new $\mathcal{O}(1)$ Yukawa couplings. The measured muon anomalous magnetic dipole moment, $(g-2{)}_{\mu }$, can be explained in this framework. As an important prediction, the muon and electron Yukawa couplings can largely deviate from their standard model predictions, and such deviations can be tested at High-Luminosity LHC and future $e^{+}{e}^{-}$ colliders.

Version accepted for publication in PRD

References in corpus (3)

• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
• Dilepton constraints in the Inert Doublet Model from Run 1 of the LHC

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• Fermion mass hierarchy and g-2 anomalies in an extended 3HDM Model
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