Bimaximal Neutrino Mixing in a Zee-type Model with Badly Broken Flavor Symmetry

Details Bimaximal Neutrino Mixing in a Zee-type Model with Badly Broken Flavor Symmetry Bimaximal Neutrino Mixing in a Zee-type Model with Badly Broken Flavor Symmetry

2000-08-14

arxiv.org/abs/hep-ph/0008129v2

Phys.Rev. D63 (2001) 037301

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, no figures, a comment added

Scientific paper

10.1103/PhysRevD.63.037301

A Zee-type neutrino mass matrix model with a badly broken horizontal symmetry SU(3)_H is investigated. By putting a simple ansatz on the symmetry breaking effects of SU(3)_H for transition matrix elements, it is demonstrated that the model can give a nearly bimaximal neutrino mixing with the ratio $\Delta m^2_{solar}/\Delta m^2_{atm} \simeq \sqrt{2} m_e/m_{\mu}=6.7 \times 10^{-3}$, which are in excellent agreement with the observed data. In the near future, the lepton-number violating decay $Z\to \mu^\pm \tau^\mp$ will be observed.

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