Weak and Electromagnetic Nuclear Decay Signatures for Neutrino Reactions in SuperKamiokande

Abstract

We suggest the study of events in the SuperKamiokande neutrino data due to charged- and neutral-current neutrino reactions followed by weak and/or electromagnetic decays of struck nuclei and fragments thereof. This study could improve the prospects of obtaining evidence for $τ$ production from $ν_μ\to ν_τ$ oscillations and could augment the data sample used to disfavor $ν_μ\to ν_{sterile}$ oscillations.

7 pages, latex, to appear in Phys. Rev. Lett