Solar neutrinos and the violation of the equivalence principle

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Abstract
In this Brief Report, a non-standard solution to the solar neutrino problem is reexamined. This solution assumes that neutrino flavors could have different couplings to gravity; hence, the equivalence principle is violated in this mechanism. The gravity induced mixing has the potential of accounting for the current solar neutrino data from several experiments even for massless neutrinos. We fit this solution to the total rate of neutrino events in the SuperKamiokande detector (first 504 days) together with the total rate from other detectors and also with the SuperKamiokande results for the recoil-electron spectrum.
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