Physics
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..ses..dd07e&link_type=abstract
American Physical Society, Southeastern Section Meeting, November 13-15, 1998 Miami, Florida, abstract #DD.07
Physics
Scientific paper
SuperKamiokande is a large underground water-Cerenkov detector, located in the Kamioka Mozumi mine, near Toyama, Japan. A US-Japan collaboration constructed the detector for studies of solar neutrinos, atmospheric neutrinos, a search for proton decay, and as a detector of neutrinos from supernova explosions. The detector is a stainless cylinder, containing 50,000 metric tons of purified water, located at a depth of 2700 meters of water equivalent. A central target volume is viewed by 11,146 photomultipliers, and an outer ``veto'' region by 1885 photomultipliers. The detector detects approximately 13 solar neutrinos/day via ν- electron elastic scattering, and 7 atmospheric neutrinos/day via ν- nucleus inelastic interactions. It measures the energies of the secondary leptons, and, for atmospheric events (with visible energy > 350 MeV) is able to tag the lepton flavor. Using data from > 500 live days, the experiment has produced evidence for oscillation of atmospheric μ-neutrinos into either τ or sterile neutrinos. This evidence will be presented.
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