Constraints on Exotic Mixing of Three Neutrinos

Details Constraints on Exotic Mixing of Three Neutrinos Constraints on Exotic Mixing of Three Neutrinos

1999-07-23

arxiv.org/abs/hep-ph/9907478v1

Phys.Rev. D61 (2000) 033011

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 4 figures

Scientific paper

10.1103/PhysRevD.61.033011

Exotic explanations are considered for atmospheric neutrino observations. Our analysis includes matter effects and the mixing of all three neutrinos under the simplifying assumption of only one relevant mixing scale. Constraints from accelerator, reactor and solar neutrinos are included. We find that the proposed mixing mechanisms based on violations of Lorentz invariance or on violations of the equivalence principle cannot explain the recent observations of atmospheric neutrino mixing. However the data still allow a wide range of energy dependences for the vacuum mixing scale, and also allow large electron-neutrino mixing of atmospheric neutrinos. Next generation long baseline experiments will constrain these possibilities.

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