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Neutrino oscillation; solar neutrino; SuperKamiokande; Sudbury Neutrino Observatory

Results for solar neutrino detection from the SuperKamiokande collaboration have been presented recently while those from the Sudbury Neutrino Observatory are expected in the near future. These experiments are sensitive to the⁸B neutrinos from the sun, the shape of whose spectrum is well-known but the normalization is less certain. We propose several variables, insensitive to the absolute flux of the incident beam, which probe the shape of the observed spectrum and can sensitively signal neutrino oscillations. They provide methods to extract the neutrino mixing angle and mass splitting from the data and also to distinguish oscillation to sequential neutrinos from those to a sterile neutrino.

Debasish Majumdar¹ Amitava Raychaudhuri¹

1. Department of Physics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Calcutta - 700 009, India

Published

May 1999

Manuscript received

4 December 1998

Manuscript revised

16 March 1999