J. Bellandi et Mm. Guzzo, THE FEYNMAN-LIKE PROCEDURE OF ORDERED EXPONENTIAL OPERATORS APPLIED TO SOLAR NEUTRINOS, Physics letters. Section B, 317(1-2), 1993, pp. 130-136
An analytic resonant solution to the solar neutrino problem induced by
small solar magnetic field phase velocity is derived using the Feynma
n-like procedure of ordered exponential operators. We assume the stand
ard solar model matter distribution inside the Sun and the model propo
sed by Akhmedov and Bychuk for the solar magnetic field to conclude th
at a neutrino magnetic moment of order (5-8) x 10(-13)mu(B) is suffici
ent to explain the experimentally observed solar neutrino deficit, an
improvement by a factor (2-4) relative to the conventional resonant sp
in-precession solution induced by neutrino squared mass difference whe
n the same solar characteristics are considered.