Solar neutrino experiments: results and implications

Details Solar neutrino experiments: results and implications Solar neutrino experiments: results and implications

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999rvmp...71.1213k&link_type=abstract

Reviews of Modern Physics, Volume 71, Issue 4, July 1999, pp.1213-1232

Physics

30

Particle Emission, Solar Wind, Solar Interior, Unified Field Theories And Models, Ordinary Neutrinos (Nuw Bosons, Surveys And Tutorial Papers, Resource Letters, Particle Emission, Solar Wind, Solar Interior, Unified Field Theories And Models, Ordinary Neutrinos (Nuw Bosons, Surveys And Tutorial Papers, Resource Letters

Scientific paper

The neutrinos that are produced in the solar fusion reaction chains reflect the conditions in the stellar interior. If the model predictions for the expected neutrino fluxes are firm, then the solar neutrino experiments can also test neutrino properties during propagation along the 1.5×108 kilometer ``baseline'' between ``source'' and detector. So far, results have been acquired with five solar neutrino detectors: Homestake, Kamiokande, Superkamiokande, Gallex, and Sage. Taking all of the experimental data together, it appears that the abundant pp neutrinos are present, the moderately abundant 7Be neutrinos are strongly or totally suppressed, and the rare 8B neutrinos are partially reduced, by a factor of about three. This outcome cannot be explained by modifications of the stellar model but it is consistent with the hypothesis of neutrino flavor oscillations. Such oscillations could occur on the way between the solar core and the detector. In such a scenario, a nonvanishing neutrino rest mass would follow. The evidence is summarized here, and the outlook as regards anticipated future experiments is briefly discussed.

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