LIMITS ON THE NEUTRINO MAGNETIC-MOMENT FROM SOLAR-NEUTRINO EXPERIMENTS

If neutrinos have non-vanishing mass and non-vanishing magnetic moment s, then electron neutrinos emitted in nuclear reactions in the solar i nterior may undergo flavour oscillations, spin precession or resonant spin-flavour precession. Assuming equal values for the magnetic moment s of all neutrino flavours and using the data from Homestake and Super Kamiokande we obtain an upper Limit on the neutrino magnetic moment an d find mu(nu e) less than or equal to (2.2 - 2.3) x 10(-10) (mu B), wi thin four standard solar models. We also point out that this limit may be further reduced if the detector threshold energy for the nu(e,x)e( -) scattering is decreased.