Combined results on $\nu_{ \mu}\to \nu_{ \tau}$ oscillations and $\nu e$-scattering from the Super-Kamiokande and LAMPF experiments, respectively, limit the Dirac $\nu_{ \tau}$ diagonal magnetic moment to $\mu_{ \nu_{ \tau}} < 1.9\times 10^{ -9} \mu_{ B}$. For the scheme with 3 Majorana neutrinos the LAMPF results allow the limitation of effective $\nu_{ \tau}$ magnetic moment to $\mu_{ \nu_{ \tau}} < 7.6 \times 10^{ -10}\mu_{ B}$. The moments in the scheme with additional Majorana light sterile neutrinos as well as experiments on stimulated radiative neutrino conversion are also discussed.
Categories: hep-ph