Global Analysis of Solar Neutrinos with Magnetic Moment and Solar Field Profiles

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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15 pages, includes 4 figures

Scientific paper

A global statistical analysis of the pre-SNO solar neutrino data including the rates and recoil electron spectrum in SuperKamiokande is made assuming the solar neutrino deficit to be resolved by the interaction of the neutrino magnetic moment with the solar magnetic field. Given the general characteristics of the field profiles known to lead to the best event rate predictions, several specific choices of profiles are assumed and global fits investigated. Whereas previous studies revealed an excellent quality of the rate fits within the magnetic moment solution to the solar neutrino problem, the global fits are found to be only of reasonable quality and comparable to the global oscillation fits. This is related to the difficulty of any theoretical model to provide at present an adjustable prediction to the spectral data.

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