(Z_2)^3 Symmetry of the Tripartite Model

Details (Z_2)^3 Symmetry of the Tripartite Model (Z_2)^3 Symmetry of the Tripartite Model

2009-09-04

arxiv.org/abs/0909.0828v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

Substantial changes: enlarging the paper and changing the title. 11 pages

Scientific paper

We derive in a simple way the $(Z_2)^3$ symmetry which characterizes uniquely the phenomenologically successful tripartite form leading to the tribimaximal mixing in the neutrino mass matrix. We impose this symmetry in a setup including the charged leptons and find that it can accommodate all the possible patterns of lepton masses in the framework of type-I and type-II seesaw mechanisms. We also discuss the possibility of generating enough baryon asymmetry through lepton-lepton asymmetry.

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