The ratio of the measured to the predicted standard model CC event rates in SNO will be 0.47 if no oscillations occur .
The best-fit active oscillation predictions for the CC ratio are : 0.35 - 39 ( MSW ) and 0.38 - 42 ( vacuum ) ( all for a 5 MeV energy threshold ) , typically about 20 % less than the no-oscillation expectation .
We calculate the predicted ratios for six active and sterile neutrino oscillation solutions allowed at 99 % CL and determine the dependence of the ratios on energy threshold .
If the high-energy anomaly observed by SuperKamiokande is due to an enhanced hep flux , MSW active solutions predict that out of a total of 5000 CC events above 5 MeV in SNO between 49 and 54 events will be observed above 13 MeV whereas only 19 events are expected for no-oscillations and a nominal standard hep flux .