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Simple Model for (3+2) Neutrino Oscillations
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We formulate a set of naturalness criteria for sterile neutrinos (\nu') to be light, needed for reconciling the LSND neutrino anomaly with the other neutrino data. A light sterile neutrino becomes as natural as the light active neutrinos if it carries quantum numbers of a chiral gauge symmetry broken at the TeV scale. The simplest such theory is shown to be an SU(2) gauge theory with the \nu' transforming as a spin 3/2 multiplet. We develop this model and show that it leads naturally to the phenomenologically viable (3+2) neutrino oscillation scheme. We also present next-to-minimal models for light sterile neutrinos based on a chiral U(1) gauge symmetry.
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Cited by 1 Pith paper
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Multi-component secluded WIMP dark matter and Dirac neutrino masses with an extra Abelian gauge symmetry
An anomaly-free two-component secluded WIMP model with a dark photon, dark Higgs, and scotogenic Dirac neutrino masses can account for the observed relic density while evading cosmological bounds.
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