Unknowns after the SNO Charged-Current Measurement

Abstract

We perform a model-independent analysis of solar neutrino flux rates including the recent charged-current measurement at the Sudbury Neutrino Observatory (SNO). We derive a universal sum rule involving SNO and SuperKamiokande rates, and show that the SNO neutral-current measurement can not fix the fraction of solar ${\nu }_e$ oscillating to sterile neutrinos. The large uncertainty in the SSM ${}^8$B flux impedes a determination of the sterile neutrino fraction.

Version to appear in PRL; includes analysis with anticipated SNO NC measurement

References in corpus (6)

• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Solar 8B and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
• Constraints on Neutrino Oscillations Using 1258 Days of Super-Kamiokande Solar Neutrino Data
• Solar neutrinos: global analysis and implications for SNO
• Solar and Atmospheric Four-Neutrino Oscillations
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