Friedland A. Mikheyev-smirnov-wolfenstein effects in vacuum oscillations.
PHYSICAL REVIEW LETTERS 2000;
85:936-939. [PMID:
10991443 DOI:
10.1103/physrevlett.85.936]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2000] [Indexed: 05/23/2023]
Abstract
We point out that for solar neutrino oscillations with the mass-squared difference of Deltam(2) approximately 10(-10)-10(-9) eV(2), i.e., in the so-called vacuum oscillation range, the solar matter effects are non-negligible, particularly for the low energy pp neutrinos. One consequence of this is that the values of the mixing angle straight theta and pi/2-straight theta are not equivalent, making it necessary to consider the entire physical range of the mixing angle 0</=straight theta</=pi/2 when determining the allowed values of the neutrino oscillation parameters.
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