Appearance-Disappearance Relation in 3+Ns Short-Baseline Neutrino Oscillations
Abstract
We derive the relation between the amplitudes of short-baseline appearance and disappearance oscillations in 3+Ns neutrino mixing schemes which is the origin of the appearance-disappearance tension that is found from the analysis of the existing data in any 3+Ns neutrino mixing scheme. We illustrate the power of the relation to reveal the appearance-disappearance tension in the cases of 3+1 and 3+2 mixing using the results of global fits of short-baseline neutrino oscillation data.
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