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

2011/04/30 by Stefano Morisi, S. Morisi, Eduardo Peinado +1 · 3 citations
Mathematics · Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Dirac (video compression format) #Double beta decay #Lepton #MAJORANA #Mathematics #Mixing (physics) #Neutrino #Neutrino Physics Research #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Realization (probability) #Symmetry (geometry) #Upper and lower bounds #hep-ph

paper · pdf · doi:10.1016/j.physletb.2011.06.024

8 pages, minor changes to match version accepted in PLB

arxiv created 2011/06/17 · openalex publication_date 2011/06/22 · arxiv updated 2015/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

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 mee is about two times that of the usual lower bound, within the range of sensitivity of the next generation of experiments.

Citations

• IsS4the horizontal symmetry of tri-bimaximal lepton mixing?
• Fermion masses and mixings in a S4 based model
• S4as a natural flavor symmetry for lepton mixing
• Non-Abelian Discrete Symmetries in Particle Physics
• Neutrinoless double-βdecay in SU(2)×U(1) theories

Cited by

• Neutrino mixing with nonzero θ13 and CP violation in the 3-3-1 model based on S4 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