New model for the neutrino mass matrix

Details New model for the neutrino mass matrix New model for the neutrino mass matrix

2000-05-31

arxiv.org/abs/hep-ph/0005321v1

Phys.Rev. D62 (2000) 093011

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages including 3 figures

Scientific paper

10.1103/PhysRevD.62.093011

I suggest a model based on a softly broken symmetry L_e - L_mu - L_tau and on Babu's mechanism for two-loops radiative generation of the neutrino masses. The model predicts that one of the physical neutrinos (nu_3) is massless and that its component along the nu_e direction (U_e3) is zero. Moreover, if the soft-breaking term is assumed to be very small, then the vacuum oscillations of nu_e have almost maximal amplitude and solve the solar-neutrino problem. New scalars are predicted in the 10 TeV energy range, and a breakdown of e-mu-tau universality should not be far from existing experimental bounds.

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