Ultrahigh Energy Neutrinos in the Light of SuperK

Abstract

We propose a novel approach for studying neutrino oscillations with extragalactic neutrinos. We show that measurement of the neutrino induced upward hadronic and electromagnetic showers and upward muons could be used to detect ${\nu }_{\mu }\to {\nu }_{\tau }$ oscillations. We find significant signal to background ratios for the hadronic/electromagnetic showers with energies above 10 TeV to 100 TeV initiated by the extragalactic neutrinos. We demonstrate that a kilometer-size neutrino telescope has a very good chance of detecting neutrino oscillations.

Comments: 4 pages, 3 figures, RevTeX4.0; Talk given at Snowmass 2001