CPT-violating neutrino oscillations

Details CPT-violating neutrino oscillations CPT-violating neutrino oscillations

2009-06-30

arxiv.org/abs/0906.5542v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

revtex, 4 pages, no figures

Scientific paper

We propose a simple phenomenological model predicting, through Lorentz symmetry breaking, a CPT-violating asymmetry between particle and antiparticle states in neutrino oscillations involving sterile neutrinos. Such a model is able to explain the apparently observed anomalous excess of low-energy \nu_e-like events, reported by the MiniBooNE collaboration, as well as the non-observation of the corresponding anomalous excess of \ov{\nu}_e-like events. The present model leads to very specific physical predictions in the neutrino oscillations scenario, and account for the observed anomalies in terms of only one CPT-Lorentz violation parameter of the order of the Grand-Unification energy scale.

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