出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The Sudbury Neutrino Observatory (SNO) is a 1000 tonne heavy water
Cherenkov detector placed 2 km underground in Ontario, Canada. Its main purpose
is the detection of solar neutrinos, but it is also sensitive to atmospheric and supernova
neutrinos. In this paper we report our rst measurement of the solar electron-type neutrino
flux using the charged current interaction on deuterium, above an electron kinetic
energy threshold of 6.75 MeV. This measurement, when compared with an electron scattering
measurement from Super Kamiokande, provides the rst evidence for non-electron
neutrino types from the Sun implying flavor change of solar electron neutrinos. We also
present an initial angular distribution of through-going muons, which shows that we can
detect neutrino-induced muons from well above the horizontal. This will give us good
sensitivity to neutrino oscillations in the atmospheric sector.
