Effects for atmospheric neutrino experiments from electron neutrino oscillations

Abstract

The minimal interpretation of the atmospheric neutrino data suggests that the muon neutrino oscillates into another species with a mixing angle close to the maximal π/4. In the Exact Parity Symmetric Model, both the muon and electron neutrinos are expected to be maximally mixed with essentially sterile partners (v'μ and v'e respectively). We examine the impact of maximal ve - v'e oscillations on the atmospheric neutrino experiments. We estimate that maximal ve - v'e oscillations will have effects on atmospheric neutrino data for |δm2(ve - v'e)| > 7 × 10-5 eV2. For δm2 in this range, a slight but distinctive rise in the ratio of muon-like to electron-like events is predicted for the low-energ..