Skip to content

Neutrino Mass Matrix from S4 Symmetry

Ernest Ma

hep-pharXiv:hep-ph/0508231

Abstract

The cubic symmetry S4 contains A4 and S3, both of which have been used to study neutrino mass matrices. Using S4 as the family symmetry of a complete supersymmetric theory of leptons, it is shown how the requirement of breaking S4 at the seesaw scale without breaking supersymmetry enforces a special form of the neutrino mass matrix which exhibits maximal numu - nutau mixing as well as zero Ue3. In addition, (nue + numu + nutau)/sqrt3 is naturally close to being a mass eignestate, thus predicting tan2 theta12 to be near but not equal to 1/2.

Create a lesson