One-pion events by atmospheric neutrinos: a three-flavor analysis

Abstract

We study the one-pion events produced via neutral current (NC) and charged current (CC) interactions by the atmospheric neutrinos. We analyze the ratios of CC events to the NC events in the framework of neutrino oscillations. These ratios can distinguish between different combinations of neutrino mixing angles in the case of three-flavor oscillations. They also provide a good diagnostic method to distinguish ν_μ →ν_τ oscillations from ν_μ →ν_s oscillations.