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Influence of solar chaotic magnetic fields on neutrino oscillations

E. Torrente-Lujan

hep-pharXiv:hep-ph/9912225

Abstract

We consider the effect of a random magnetic field in the convective zone of the Sun on resonant neutrino spin-flavour oscillations. The expected signals in the different experiments (SK, GALLEX-SAGE,Homestake) are obtained as a function of the level of noise, regular magnetic field and neutrino mixing parameters. Previous results obtained for small mixing and ad-hoc regular magnetic profiles are reobtained. We find that MSW regions are stable up to very large levels of noise (P=0.7-0.8) and they are acceptable from the point of view of antineutrino production. For strong noise any parameter region (Δm2, 2 2θ) is excluded: this model of noisy magnetic field is not compatible with particle physics solutions to the SNP. scenario.

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