LONG-WAVELENGTH VACUUM NEUTRINO OSCILLATIONS AND THE SOLAR-NEUTRINO DEFICIT

Vacuum neutrino oscillations with very long wavelengths, comparable to the radius of the Earths orbit, can simultaneously explain both the Homestake and Kamiokande-II solar-neutrino counting rates. They imply approximately a 50% reduction in the e flux from the p-p process, and seasonal variations in the e scattering rates for Be7 and pep neutrinos, which distinguish this scenario from alternative explanations. © 1990 The American Physical Society.