Zee-type Neutrino Mass Matrix and Bi-Maximal Mixing

Abstract

It is shown that the bi-maximal solution is the only possibility to reconcile Zee-type neutrino mass matrix with three flavors to the current atmospheric and solar neutrino experimental data. The mass of the lightest neutrino, which consist mostly of ${\nu }_{\mu }$ and ${\nu }_{\tau }$, is $\simeq \Delta m_{\odot }^2/(2\sqrt{\Delta m_{atm}^2})$. The related topics on Zee-type neutrino mass matrix are also discussed.

Comments: 5 pages, no figure, Talk given by M. Matsuda at Workshop on Neutrino Oscillations and their Origin, Fuji-Yoshida, Japan, 11-13 Feb 2000