Tau neutrino magnetic moments from the Super-Kamiokande and νe-scattering data

Combined results on νμ→ντ oscillations and νe-scattering from the Super-Kamiokande and LAMPF experiments, respectively, limit the Dirac ντ diagonal magnetic moment to μντ<1.9×10−9μB. For the scheme with 3 Majorana neutrinos the LAMPF results allow the limitation of effective ντ magnetic moment to μντ<7.6×10−10μB. The moments in the scheme with additional Majorana light sterile neutrinos as well as experiments on stimulated radiative neutrino conversion are also discussed.