Getting the most from the statistical analysis of solar neutrino oscillations

Fogli, G. L.; Lisi, E; Marrone, A; Montanino, D.; Palazzo, A

doi:10.1103/PhysRevD.66.053010

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Getting the most from the statistical analysis of solar neutrino oscillations

Author(s): G. L. Fogli , E. Lisi , A. Marrone , D. Montanino , A. Palazzo

Publication date (Electronic): September 30 2002

Journal: Physical Review D

Publisher: American Physical Society (APS)

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Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory

Q. R. Ahmad, R C Allen, T. C. Andersen … (2002)

Observations of neutral-current nu interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current (NC), elastic scattering, and charged current reactions and assuming the standard 8B shape, the nu(e) component of the 8B solar flux is phis(e) = 1.76(+0.05)(-0.05)(stat)(+0.09)(-0.09)(syst) x 10(6) cm(-2) s(-1) for a kinetic energy threshold of 5 MeV. The non-nu(e) component is phi(mu)(tau) = 3.41(+0.45)(-0.45)(stat)(+0.48)(-0.45)(syst) x 10(6) cm(-2) s(-1), 5.3sigma greater than zero, providing strong evidence for solar nu(e) flavor transformation. The total flux measured with the NC reaction is phi(NC) = 5.09(+0.44)(-0.43)(stat)(+0.46)(-0.43)(syst) x 10(6) cm(-2) s(-1), consistent with solar models.