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Particles and Fields

Eur. Phys. J. C 10, 491-497
DOI 10.1007/s100529900136

Nearly degenerate mass and bimaximal mixing of neutrinos in the SO(3) gauge model of leptons

Y.-L. Wu

Institute of Theoretical Physics, Academia Sinica, P.O. Box 2735, Beijing 100080, P.R. China (YLWU@ITP.AC.CN)

Received: 10 February 1999 / Published online: 8 September 1999

A realistic scheme for masses and mixing of leptons is investigated in the model with gauged SO(3) lepton flavor symmetry. Within this scheme, a nearly bimaximal neutrino mixing pattern with a maximal CP-violating phase is found to be the only possible solution for reconciling both solar and atmospheric neutrino flux anomalies. Three Majorana neutrino masses are nearly degenerate and large enough to play a significant cosmological role. Lepton flavor-violating effects via SO(3) gauge interactions can be as large as the present experimental limits. Masses of the SO(3) gauge bosons are bounded to be above 24 TeV when the SO(3) gauge boson mixing angle $\theta_{F}$ and coupling constant g'3 are taken to be the same as those ($\theta_{W}$ and g) in the electroweak theory.

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