Influence of solar chaotic magnetic fields on neutrino oscillations

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 $(\Delta m^2,{\sin }^{2}2\theta )$ is excluded: this model of noisy magnetic field is not compatible with particle physics solutions to the SNP. scenario.

10pp+2figs. To be published in the proceedings of 2nd ICRA Network Workshop: The Chaotic Universe: Theory and observations, Rome, Italy, 1-5 Feb 1999

Cited by in corpus (5)

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