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Random magnetic fields inducing solar neutrino spin-flavor precession in a three generation context

M. M. Guzzo·P. C. de Holanda·O. L. G. Peres
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Abstract

We study the effect of random magnetic fields in the spin-flavor precession of solar neutrinos in a three generation context, when a non-vanishing transition magnetic moment is assumed. While this kind of precession is strongly constrained when the magnetic moment involves the first family, such constraints do not apply if we suppose a transition magnetic moment between the second and third families. In this scenario we can have a large non-electron anti-neutrino flux arriving on Earth, which can lead to some interesting phenomenological consequences, as, for instance, the suppression of day-night asymmetry. We have analyzed the high energy solar neutrino data and the KamLAND experiment to constrain the solar mixing angle, and solar mass difference, and we have found a larger shift of allowed values.

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M. M. Guzzo, P. C. de Holanda, O. L. G. Peres. 2005-04-20. Random magnetic fields inducing solar neutrino spin-flavor precession in a three generation context. https://doi.org/10.1103/physrevd.72.073004

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