Interpreting OPERA results on superluminal neutrino
arXiv:1109.5682 · doi:10.1016/j.nuclphysb.2012.03.008
Abstract
OPERA has claimed the discovery of superluminal propagation of neutrinos. We analyze the consistency of this claim with previous tests of special relativity. We find that reconciling the OPERA measurement with information from SN1987a and from neutrino oscillations requires stringent conditions. The superluminal limit velocity of neutrinos must be nearly flavor independent, must decrease steeply in the low-energy domain, and its energy dependence must depart from a simple power law. We construct illustrative models that satisfy these conditions, by introducing Lorentz violation in a sector with light sterile neutrinos. We point out that, quite generically, electroweak quantum corrections transfer the information of superluminal neutrino properties into Lorentz violations in the electron and muon sector, in apparent conflict with experimental data.
21 pages, 4 figures. Final version to appear on NPB. The electroweak corrections that transfer Lorentz violation from neutrinos to electrons have now been computed finding a result in agreement with the estimate in the first version of the paper
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