Texture of a Four-Neutrino Mass Matrix

Details Texture of a Four-Neutrino Mass Matrix Texture of a Four-Neutrino Mass Matrix

1998-08-28

arxiv.org/abs/hep-ph/9808451v3

Phys.Lett. B445 (1998) 185-190

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages latex file; Revised version (to be published in Phys. Lett. B)

Scientific paper

10.1016/S0370-2693(98)01481-6

We propose a simple texture of the neutrino mass matrix with one sterile neutrino along with the three standard ones. It gives maximal mixing angles for $\nu_e \to \nu_S$ and $\nu_\mu \to \nu_\tau$ oscillations or vice versa. Thus with only four parameters, this mass matrix can explain the solar neutrino anomaly, atmospheric neutrino anomaly, LSND result and the hot dark matter of the universe, while satisfying all other Laboratory constraints. Depending on the choice of parameters, one can get the vacuum oscillation or the large angle MSW solution of the solar neutrino anomaly.

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