Dirac neutrinos from flavor symmetry

Abstract

We present a model where Majorana neutrino mass terms are forbidden by the flavor symmetry group Delta(27). Neutrinos are Dirac fermions and their masses arise in the same way as that of the charged fermions, due to very small Yukawa couplings. The model fits current neutrino oscillation data and correlates the octant of the atmospheric angle with the magnitude of the lightest neutrino mass, with maximal mixing excluded for any neutrino mass

6 pages, 2 figures, references added, discussion of FCNC processes added. Version to appear in PRD

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• $Z^{\prime }$s in neutrino scattering at DUNE
• Naturally Small Dirac Neutrino Mass with Intermediate $SU(2{)}_L$ Multiplet Fields
• Linear Seesaw for Dirac Neutrinos with $A_4$ Flavour Symmetry
• Generalized Bottom-Tau unification, neutrino oscillations and dark matter: predictions from a lepton quarticity flavor approach
• Improved Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Origin of Constrained Maximal CP Violation in Flavor Symmetry
• Dynamical seesaw mechanism for Dirac neutrinos
• Common Origin of Neutrino Mass, Dark Matter and Dirac Leptogenesis
• Naturally Light Dirac Neutrino in Left-Right Symmetric Model
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• The $\Delta (27)$ flavor 3-3-1 model with neutral leptons
• Naturally light neutrinos in $Diracon$ model
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• CP Violation from Flavor Symmetry in a Lepton Quarticity Dark Matter Model
• Flavour-symmetric type-II Dirac neutrino seesaw mechanism
• Fermion and scalar phenomenology of a 2-Higgs doublet model with $S_3$
• Light Dirac neutrino portal dark matter with observable $\Delta N_{\mathrm{eff}}$
• Neutrino oscillations and the seesaw origin of neutrino mass
• Connecting Light Dirac Neutrinos to a Multi-component Dark Matter Scenario in Gauged $B-L$ Model
• The $\mu$-$\tau$ reflection symmetry of Majorana neutrinos
• Common Origin of Dirac Neutrino Mass and Freeze-in Massive Particle Dark Matter
• The first $\Delta (27)$ flavor 3-3-1 model with low scale seesaw mechanism
• Fermion Masses and Mixings and Dark Matter Constraints in a Model with Radiative Seesaw Mechanism
• A highly predictive $A_4$ flavour 3-3-1 model with radiative inverse seesaw mechanism
• Towards distinguishing Dirac from Majorana neutrino mass with gravitational waves
• The symmetry approach to quark and lepton masses and mixing
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• Two-Loop $Z_4$ Dirac Neutrino Masses and Mixing, with Self-Interacting Dark Matter
• Neutrino predictions from a left-right symmetric flavored extension of the standard model
• Radiative Seesaw-type Mechanism of Fermion Masses and Non-trivial Quark Mixing
• Radiative Dirac Neutrino Mass with Dark Matter and it's implication to $0\nu 4\beta$ in the $U(1{)}_{B-L}$ extension of the Standard Model
• Scotogenic dark matter and Dirac neutrinos from unbroken gauged $B-L$ symmetry
• Littlest Inverse Seesaw Model
• A novel Randall-Sundrum model with $S_3$ flavor symmetry
• Low scale Dirac leptogenesis and dark matter with observable $\Delta N_{\mathrm{eff}}$
• $\Delta (27)$ framework for cobimaximal neutrino mixing models
• Survey of Texture Zeros with Light Dirac Neutrinos
• Delta(54) flavor phenomenology and strings
• $\Delta \left(27\right)$ flavor singlet-triplet Higgs model for fermion masses and mixings
• Correlation of normal neutrino mass ordering with upper octant of ${\theta }_{23}^{}$ and third quadrant of $\delta$ via RGE-induced $\mu$-$\tau$ symmetry breaking
• Common origin of modified chaotic inflation, non thermal dark matter and Dirac neutrino mass
• A new radiative neutrino mass generation mechanism with higher dimensional scalar representations and custodial symmetry
• Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT
• Discrete symmetries and mixing of Dirac neutrinos
• Muon anomalies and the $SU(5)$ Yukawa relations
• Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos
• Controlled fermion mixing and FCNCs in a $\Delta (27)$ 3+1 Higgs Doublet Model
• Bulk Majorana mass terms and Dirac neutrinos in Randall Sundrum Model
• Revisiting the Dirac Nature of Neutrinos in the Light of $\Delta (27)$ and Cyclic Symmetries
• Soft RPV Through the Baryon Portal
• Five Texture Zeros for Dirac Neutrino Mass Matrices
• 3HDM with $\Delta (27)$ symmetry and its phenomenological consequences
• The role of residual symmetries in dark matter stability and the neutrino nature
• Axion framework with color-mediated Dirac neutrino masses
• Singlet Fermion Assisted Dominant Seesaw with Lepton Flavor and Number Violations and Leptogenesis
• Predictive linear seesaw model with $\Delta \left(27\right)$ family symmetry
• Two-zero textures for Dirac Neutrinos
• Cartan's Supersymmetry and Weak and Electromagnetic Interactions
• Theory and phenomenology of Dirac neutrinos
• Sterile neutrino Dark Matter in the minimal Dirac Seesaw