Sequentially loop suppressed fermion masses from a single discrete symmetry

Abstract

We propose a systematic and renormalizable sequential loop suppression mechanism to generate the hierarchy of the Standard Model fermion masses from one discrete symmetry. The discrete symmetry is sequentially softly broken in order to generate one-loop level masses for the bottom, charm, tau and muon leptons and two-loop level masses for the lightest Standard Model charged fermions. The tiny masses for the light active neutrinos are produced from radiative type-I seesaw mechanism, where the Dirac mass terms are effectively generated at two-loop level.

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Arbeláez, C., Hernández, A.C., Cepedello, R. et al. Sequentially loop suppressed fermion masses from a single discrete symmetry. J. High Energ. Phys. 2020, 43 (2020). https://doi.org/10.1007/JHEP06(2020)043

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Keywords

  • Beyond Standard Model
  • Neutrino Physics
  • Quark Masses and SM Parameters