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arXiv · hep-ph/0108108

Electron-neutrino survival probability from solar-neutrino data

V. Berezinsky·M. Lissia
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Abstract

With SNO data on electron-neutrino flux from the sun, it is possible to derive the $ν_e$ survival probability $P_{ee}(E)$ from existing experimental data of Super-Kamiokande, gallium experiments and Homestake. The combined data of SNO and Super-Kamiokande provide boron $ν_e$ flux and the total flux of all active boron neutrinos, giving thus $P_{ee}(E)$ for boron neutrinos. The Homestake detector, after subtraction of the signal from boron neutrinos, gives the flux of Be+CNO neutrinos, and $P_{ee}$ for the corresponding energy interval, if the produced flux is taken from the Standard Solar Model (SSM). Gallium detectors, GALLEX, SAGE and GNO, detect additionally pp-neutrinos. The pp-flux can be calculated subtracting from the gallium signal the rate due to boron, beryllium and CNO neutrinos. The ratio of the measured $pp$-neutrino flux to that predicted by the SSM gives the survival probability for $pp$-neutrinos. Comparison with theoretical survival probabilities shows that the best (among known models) fit is given by LMA and LOW solutions.

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V. Berezinsky, M. Lissia. 2001-08-28. Electron-neutrino survival probability from solar-neutrino data. https://doi.org/10.1016/s0370-2693(01)01212-6

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