Testing nonradiative neutrino decay scenarios with IceCube data

The hypothesis of nonradiative neutrino decay is tested using the latest IceCube data. The track-to-shower ratio expected in IceCube is calculated in a complete decay scenario, taking into account the uncertainties in neutrino oscillation parameters and assuming only one stable neutrino. The subset of high-energy neutrino events observed by IceCube above 60 TeV, combined with the information provided by passing muons, actually disfavors the possibility of neutrinos decay at about a 2 σ level of significance for both the normal and inverted neutrino mass hierarchy.