Embedding A4 into left–right flavor symmetry: Tribimaximal neutrino mixing and fermion hierarchy

2007/10/16 by F. Bazzocchi, Federica Bazzocchi, Stefano Morisi +1 · 3 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1016/j.physletb.2007.11.083

published as Phys.Lett.B659:628-633,2008 · 9 pages, uses revtex4 and axodraw.sty

arxiv created 2007/10/16 · openalex publication_date 2007/12/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

Abstract

We address two fundamental aspects of flavor physics: the mass hierarchy and the large lepton mixing angles. On one side, left–right flavor symmetry realizes the democratic mass matrix patterns and explains why one family is much heavier than the others. On the other side, discrete flavor symmetry such as A4 leads to the observed tribimaximal mixing for the leptons. We show that, by explicitly breaking the left–right flavor symmetry into the diagonal A4, it is possible to explain both the observed charged fermion mass hierarchies and quark and lepton mixing angles. In particular we predict a heavy 3rd family, the tribimaximal mixing for the leptons, and we suggest a possible origin of the Cabibbo and other mixing angles for the quarks.

Citations

• Obtaining the neutrino mixing matrix with the tetrahedral group
• Model for fermion masses and lepton mixing inSO(10)×A4
• Models of Neutrino Masses and Mixings

Cited by

• SUSY adjoint SU(5) grand unified model with S4 flavor symmetry
• Fermion masses and mixings in a S4 based model
• A4-based see-saw model for realistic neutrino masses and mixing