Neutrino Oscillation Results from the Sudbury Neutrino Observatory

The Sudbury Neutrino Observatory (SNO) has determined the flavor content of the ⁸B solar neutrino flux by measuring the rates of charged current and neutral current neutrino interactions on deuterium. These results directly demonstrate neutrino flavor transformation at greater than 5 σ significance. The total flux of ⁸B neutrinos is found to be in good agreement with solar model predictions. Measurements of the day and night neutrino energy spectra probe models of neutrino oscillation. A global fit of SNO data and results from other solar neutrino experiments to neutrino oscillation models strongly favors the Large Mixing Angle (LMA) MSW solution.