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Possible Explanation of the Solar-Neutrino Puzzle

1986/03/24 by H. A. Bethe · 547 citations
Physics and Astronomy · #Neutrino Physics Research #Astrophysics and Cosmic Phenomena #Particle physics theoretical and experimental studies #Neutrino #Physics #Solar neutrino #Particle physics #Lepton #Electron #Solar neutrino problem #Energy (signal processing) #Nuclear physics #Neutrino oscillation #Quantum mechanics

paper · doi:10.1103/physrevlett.56.1305

published in Physical Review Letters 56(12), 1305-1308 (American Physical Society)

openalex publication_date 1986/03/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/05/16

Abstract

Mikheyev and Smirnov have shown that electron neutrinos above a certain minimum energy Em may all be converted into \ensuremathμ neutrinos on their way out through the sun. We assume here that this is the reason why Davis and collaborators, in their experiments, find many fewer solar neutrinos than predicted. The minimum energy Em is found to be about 6 MeV, the mass m of the \ensuremathμ neutrino must be greater than that of the electron neutrino, m22\ensuremath-m12=6\ifmmode×\else\texttimes\fi10^\ensuremath-5 eV2, and there is a very minor restriction on the neutrino mixing angle.

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