How unique are the MSW parameters ?

Details How unique are the MSW parameters ? How unique are the MSW parameters ?

1992-12-14

arxiv.org/abs/hep-ph/9212258v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures in two pages

Scientific paper

We investigate the effect of a possible large frozen-in magnetic field in the core of the sun and a neutrino magnetic moment of the order of $10^{-10}$ Bohr magneton on the MSW parameters. Such a possibility can completely depolarize the $\nu_{eL}$ resulting in a factor of half of the emitted number. This in combination with MSW can explain the present experimental data on solar neutrinos but with a different region of the parameter space than the regular MSW alone. In this scenario there is a larger region of parameter space allowed. There is a large strip of parameter space corresponding to adiabatic solution and no solution for large mixing angle region. The non-adiabatic region still remains as a solution but shifted and larger relative to the regular MSW.

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