What will the first year of SNO show?

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  • 5 November 1999
Abstract
The ratio of measured to combined standard model predicted CC events in SNO will be 0.47 if no oscillations occur. The best-fit oscillation predictions are: 0.35-39 (MSW, active), 0.38-42 (vacuum), and 0.48 (MSW, sterile), all for a 5 MeV threshold. We calculate the ratios allowed at 99% CL and determine their dependence on energy threshold. If the high-energy anomaly observed by SuperKamiokande is due to an enhanced hep flux, MSW active solutions predict between 49 and 54 events will be observed above 13 MeV, whereas only 19 events are expected for no-oscillations and a nominal standard model.

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