Democratic Neutrino Mixing Reexamined

Details Democratic Neutrino Mixing Reexamined Democratic Neutrino Mixing Reexamined

2004-06-19

arxiv.org/abs/hep-ph/0406206v1

Phys.Lett. B598 (2004) 237-242

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTex 8 pages

Scientific paper

10.1016/j.physletb.2004.07.061

We reexamine the democratic neutrino mixing ansatz, in which the mass matrices of charged leptons and Majorana neutrinos arise respectively from the explicit breaking of S(3)_L x S(3)_R and S(3) flavor symmetries. It is shown that a democracy term in the neutrino sector can naturally allow the ansatz to fit the solar neutrino mixing angle \theta_sun \approx 33^\circ. We predict \sin^2 2\theta_atm \approx 0.95 for atmospheric neutrino mixing and J \approx 1.2% for leptonic CP violation in neutrino oscillations without any fine-tuning. Direct relations between the model parameters and experimental observables are also discussed.

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