Implications of recent solar neutrino observations: an analysis of charged current data

Abstract

We have analysed the recent results from the observation of charged current ν_e d \to e^- p p events from solar neutrinos by the Sudbury Neutrino Observatory SNO assuming neutrino oscillations with three active flavours. The data seem to prefer a low mass-squared difference and large mixing angle solution (the so-called LOW solution) in (12) parameter space. However, when combined with the Gallium charged current interaction data from Gallex and GNO, distinct (1σ) allowed regions corresponding to the large mixing angle (LMA) and small mixing angle (SMA) appear while the LOW solution is disfavoured upto 3σstandard deviation. The physical electron neutrino survival probability corresponding to these best fit solutions are then determined and analysed for their energy dependence.

16 pages Latex file, with 5 epsf figures; one reference added

References in corpus (9)

• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Solar Models: current epoch and time dependences, neutrinos, and helioseismological properties
• Global Analysis of Solar Neutrino Oscillations Including SNO CC Measurement
• Model-dependent and independent implications of the first Sudbury Neutrino Observatory results
• Neutrino Reactions on Deuteron
• Impact of the first SNO results on Neutrino Mass and Mixing
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• Neutrinos from Stellar Collapse: Comparison of signatures in water and heavy water detectors
• Electron-neutrino survival probability from solar-neutrino data

Cited by in corpus (3)

• Radiatively Generated ${\nu }_e$ Oscillations: General Analysis, Textures and Models
• Lepton Masses and Mixing in a Left-Right Symmetric Model with a TeV-scale Gravity
• Neutrino Oscillations Due to Nonuniversal Gauge Interactions in the Weak Sector