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

Yoshio Koide·Ambar Ghosal
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Abstract

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 $Δm^2_{solar}/Δm^2_{atm} \simeq \sqrt{2} m_e/m_μ=6.7 \times 10^{-3}$, which are in excellent agreement with the observed data. In the near future, the lepton-number violating decay $Z\to μ^\pm τ^\mp$ will be observed.

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Yoshio Koide, Ambar Ghosal. 2000-09-15. Bimaximal Neutrino Mixing in a Zee-type Model with Badly Broken Flavor Symmetry. https://doi.org/10.1103/physrevd.63.037301

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