MSW Effects in Vacuum Oscillations

Details MSW Effects in Vacuum Oscillations MSW Effects in Vacuum Oscillations

2000-02-06

arxiv.org/abs/hep-ph/0002063v2

Phys.Rev.Lett. 85 (2000) 936-939

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 5 figures. The calculation of the level crossing probability is now performed numerically using the BP2000 solar dens

Scientific paper

10.1103/PhysRevLett.85.936

We point out that for solar neutrino oscillations with the mass-squared difference of Delta m^2 ~ 10^-10 - 10^-9 eV^2, traditionally known as ``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 theta and pi/2-theta are not equivalent, leading to the need to consider the entire physical range of the mixing angle 0<=theta<=pi/2 when determining the allowed values of the neutrino oscillation parameters.

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