Atmospheric neutrinos: phenomenological summary and outlook
Abstract
The predictions of the atmospheric nu event rates are affected by significant uncertainties, however the evidence for the `disappearance' of numu's and nubarmu's obtained by SK (and other underground detectors) is robust and cannot be accounted in the framework of the minimum standard model without assuming very large ad hoc experimental systematic effects. The existence of `new physics' beyond the standard model is therefore close to be established; neutrino oscillations provide a very good fit to all data. The theoretical uncertainties do have an important role in the detailed interpretation of the data, and in the estimate of oscillation parameters.
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