Quasi-Dirac neutrinos in a model with local $B-L$ symmetry

Abstract

In a model with $B-L$ gauge symmetry, right-handed neutrinos may have exotic local $B-L$ charge assignment: two of them with $B-L=-4$ and the other one having $B-L=5$. Then, it is natural to accommodate the right-handed neutrinos with the same $B-L$ charge in a doublet of the discrete $S_3$ symmetry, and the third one in a singlet. If the Yukawa interactions involving right-handed neutrinos are invariant under $S_3$, the quasi-Dirac neutrino scheme arise naturally in this model. However, we will show how in this scheme it is possible to give a value for ${\theta }_{13}$ in agreement with the Daya Bay results. For example the $S_3$ symmetry has to be broken in the Yukawa interactions involving right-handed charged lepton.

enlarger version with 17 pages. The title was changed in the published version

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• Bounds on Neutrino-Scalar Yukawa Coupling
• Dirac or Inverse Seesaw Neutrino Masses from Gauged B - L Symmetry
• Complex Scalar DM in a B-L Model
• Simplest Radiative Dirac Neutrino Mass Models
• Minimal Realizations of Dirac Neutrino Mass from Generic One-loop and Two-loop Topologies at $d=5$
• Fermionic dark matter and neutrino masses in a $\mathcal{B}-\mathcal{L}$ model
• Scotogenic Cobimaximal Dirac Neutrino Mixing from $\Delta (27)$ and $U(1{)}_{\chi }$
• Dark Matter and $(g-2{)}_{\mu ,e}$ in radiative Dirac neutrino mass models
• Probing Light Mediators in the Radiative Emission of Neutrino Pair
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• Lepton masses and mixings, and muon anomalous magnetic moment in an extended $B-L$ model with type I seesaw mechanism
• Quasi-Dirac neutrinos and solar neutrino data