A minimal three generation seesaw scenario for LSND

Abstract

We show that in the minimal three generation seesaw models for neutrinos, the presence of leptonic $(L_e+L_{\mu }-L_{\tau })\times S_2$ symmetry leads to one of the right handed neutrinos remaining massless. This state can then be identified with the sterile neutrino required for a simultaneous understanding of solar, atmospheric and LSND observations. We present a gauge model where the presence of higher dimensional operators originating from Planck scale physics lead to a realistic 2+2 mixed scenario that fits all oscillation data. The model predicts a range for the mixing angle $U_{e3}$ and an effective mass for neutrinos emitted in tritium decay, which can be used to test this model.

11 pages, latex, no figures

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Cited by in corpus (8)

• Model Predictions for Neutrino Oscillation Parameters
• Sterile neutrinos as subdominant warm dark matter
• Status of Evidence for Neutrinoless Double Beta Decay
• Seesaw Right Handed Neutrino as the Sterile Neutrino for LSND
• Late Time Neutrino Masses, the LSND Experiment and the Cosmic Microwave Background
• Constraining Mass Spectra with Sterile Neutrinos from Neutrinoless Double Beta Decay, Tritium Beta Decay and Cosmology
• Implications of a Massless Neutralino for Neutrino Physics
• A texture of neutrino mass matrix in view of recent neutrino experimental results