Radiochemical Solar Neutrino Experiments and Implications

Details Radiochemical Solar Neutrino Experiments and Implications Radiochemical Solar Neutrino Experiments and Implications

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ppu..conf...71k&link_type=abstract

PARTICLE PHYSICS AND THE UNIVERSE. Proceedings of Nobel Symposium 109. Held 20-25 August 1998 in Haga Slott, Enköping, Sweden. E

Physics

Solar Neutrinos, Neutrino Mass And Mixing

Scientific paper

The model predictions for the flux of low energy neutrinos produced in the solar core are now rather firm. This allows reliable tests of neutrino properties in solar neutrino experiments; neutrino propagation can be studied with a baseline of 150 million kilometers. Experimental data are available from three radiochemical detectors (Homestake, Gallex, and Sage) and from two real-time detectors (Kamiokande and Superkamiokande). Taking all experimental data together, it appears that the abundant pp-neutrinos are entirely present, the moderately abundant 7Be-neutrinos are strongly or totally suppressed and the rare 8B-neutrinos are partially reduced, by a factor ≈2. This pattern can not be explained by modifications of the stellar model but it is consistent with neutrino flavor oscillations that occur on the way between the solar core and the detector. If this applies, a non-vanishing neutrino restmass follows. The evidence is summarized.

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