Admixture of quasi-Dirac and Majorana neutrinos with tri-bimaximal mixing

Abstract

We propose a realization of the so-called bimodal/schizophrenic model proposed recently. We assume S4, the permutation group of four objects as flavor symmetry giving tri-bimaximal lepton mixing at leading order. In these models the second massive neutrino state is assumed quasi-Dirac and the remaining neutrinos are Majorana states. In the case of inverse mass hierarchy, the lower bound on the neutrinoless double beta decay parameter m_ee is about two times that of the usual lower bound, within the range of sensitivity of the next generation of experiments.

8 pages, minor changes to match version accepted in PLB

References in corpus (8)

• CP Violation and Neutrino Oscillations
• The Unique Horizontal Symmetry of Leptons
• Is S4 the horizontal symmetry of tri-bimaximal lepton mixing?
• The 3-3-1 model with S_4 flavor symmetry
• Neutrino masses and mixing from S4 flavor twisting
• Schizophrenic Neutrinos and $\nu$-less Double Beta Decay
• Tri-bimaximal Mixing and Cabibbo Angle in S4 Flavor Model with SUSY
• Schizophrenic active neutrinos and exotic sterile neutrinos

Cited by in corpus (11)

• Model for T2K indication with maximal atmospheric angle and tri-maximal solar angle
• The S_3 flavor symmetry in 3-3-1 models
• The D_4 flavor symmery in 3-3-1 model with neutral leptons
• The T7 flavor symmetry in 3-3-1 model with neutral leptons
• Neutrino Mixing with Non-Zero ${\theta }_{13}$ and CP Violation in the 3-3-1 Model Based on $S_4$ Flavor Symmetry
• The quest for neutrinoless double beta decay: Pseudo-Dirac, Majorana and sterile neutrinos
• Realizing Tri-bimaximal Mixing in Minimal Seesaw Model with S4 Family Symmetry
• Quasi-Dirac neutrinos in a model with local $B-L$ symmetry
• Lepton mass and mixing in a Neutrino Mass Model based on $S_4$ flavor symmetry
• Non-vanishing $U_{e3}$ under $S_3$ symmetry
• Split neutrinos - leptogenesis, dark matter and inflation