A non-QE signature of nue appearance in a water Cherenkov detector
A. Asratyan, V. Verebryusov
Abstract
We argue that analyzing the nue- and barnue-induced CC reactions nue n --> e- pi0 p and barnue p --> e+ pi0 n along with quasielastics may significantly enhance the sensitivity of a water Cherenkov detector to subleading oscillations numu --> nue and barnumu --> barnue at neutrino energies ~ 2 GeV, as projected for the off-axis neutrino beam of NuMI.The neutral-current background to these reactions is less than to quasielastics, and can be further suppressed by reconstructing theprimary vertex of the collision.
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