Two-Loop $Z_4$ Dirac Neutrino Masses and Mixing, with Self-Interacting Dark Matter

Abstract

Choosing how gauge $U(1{)}_{\chi }$ breaks in the context of $SO(10)\to SU(5)\times U(1{)}_{\chi }$, $Z_4$ lepton number may be obtained which maintains neutrinos as Dirac fermions. Choosing $\Delta (27)$ as the family symmetry of leptons, tree-level Dirac neutrino masses may be forbidden. Choosing a specific set of self-interacting dark-matter particles, Dirac neutrino masses and mixing may then be generated in two loops. This framework allows the realization of cobimaximal neutrino mixing, i.e. ${\theta }_{13}\ne 0$, ${\theta }_{23}=\pi /4$, ${\delta }_{CP}=\pm \pi /2$, as well as the desirable feature that the light scalar mediator of dark-matter interactions decays only to neutrinos, thereby not disrupting the cosmic microwave background (CMB).

15 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1905.01535

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Cited by in corpus (19)

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• Universal Inverse seesaw mechanism as a source of the SM fermion mass hierarchy
• Dark Stars Powered by Self-Interacting Dark Matter
• Anomaly-free Abelian gauge symmetries with Dirac scotogenic models
• Dirac neutrinos in the 2HDM with restrictive Abelian symmetries
• Dark Matter and $(g-2{)}_{\mu ,e}$ in radiative Dirac neutrino mass models
• Scotogenic Dirac neutrino mass models embedded with leptoquarks: one pathway to address the flavor anomalies and the neutrino masses together
• Flavor Seesaw Mechanism
• Controlled fermion mixing and FCNCs in a $\Delta (27)$ 3+1 Higgs Doublet Model
• Sequentially loop supressed fermion masses from a unique discrete symmetry
• Multiscalar $B-L$ extension based on $S_4$ flavor symmetry for neutrino mass and mixing
• CDF-II W boson mass in the Dirac Scotogenic model
• Fermion mass hierarchy and g-2 anomalies in an extended 3HDM Model
• Double type-II Dirac seesaw accompanied by Dirac fermionic dark matter
• Unified Origin of Dirac Neutrino and Asymmetric Dark Matter Masses via a Dirac-Type Leptogenesis
• Theory and phenomenology of Dirac neutrinos