Colloquia

The Sudbury Neutrino Observatory (SNO) is a heavy water, imaging Cerenkov detector operating 6800 feet underground in the Creighton Nickel Mine in Ontario, Canada. With its heavy water target, SNO has the unique capability to detect and separate three distinct 8B solar neutrino signals through the charged current (CC), neutral current (NC), and elastic scattering (ES) channels. By comparing the solar neutrino flux deduced from the CC interaction (sensitive only to electron neutrinos) with that deduced from the NC or ES interactions (sensitive to all active neutrino flavors), SNO can make a unique study of the solar neutrino deficit and a model independent test for neutrino oscillations. Results from the pure D2O phase of SNO will be presented along with their implications for elementary particle physics, astrophysics, and cosmology.