Unknowns after the SNO charged-current measurement.
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 cannot fix the fraction of solar nu(e) oscillating to sterile neutrinos. The large uncertainty in the standard solar model (8)B flux impedes a determination of the sterile neutrino fraction.
Barger
V
V
Department of Physics, University of Wisconsin-Madison, Madison, WI 53706, USA.
Marfatia
D
D
Whisnant
K
K