Model Independent Information On Solar Neutrino Oscillations

Details Model Independent Information On Solar Neutrino Oscillations Model Independent Information On Solar Neutrino Oscillations

2001-11-21

arxiv.org/abs/hep-ph/0111254v3

Phys.Rev. D65 (2002) 093005

Physics

High Energy Physics

High Energy Physics - Phenomenology

40 pages, 20 figures. Added references and improved figures

Scientific paper

10.1103/PhysRevD.65.093005

We present the results of a Bayesian analysis of solar neutrino data in terms of nu_e->nu_{mu,tau} oscillations, independent from the Standard Solar Model predictions for the solar neutrino fluxes. We show that such a model independent analysis allows to constraint the values of the neutrino mixing parameters in limited regions around the usual SMA, LMA, LOW and VO regions. Furthermore, there is a strong indication in favor of large neutrino mixing and large values of Delta m^2 (LMA region). We calculate also the allowed ranges of the neutrino fluxes and we show that they are in good agreement with the Standard Solar Model prediction. In particular, the ratio of the 8B flux with its Standard Solar Model prediction is constrained in the interval [0.45,1.42] with 99.73% probability. Finally, we show that the hypothesis of no neutrino oscillations is strongly disfavored in a model independent way with respect to the hypothesis of neutrino oscillations.

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