The solar LMA neutrino oscillation solution in the Zee model

We examine the neutrino mass matrix in the version of Zee model where both Higgs doublets couple to the leptons. We show that in this case one can acc ommodate the large mixing angle (LMA) MSW solution of the solar neutrino pr oblem, while avoiding maximal solar mixing and conflicts with constraints o n lepton family number-violating interactions. In the simplified scenario w e consider, we have the neutrino mass spectrum characterized by m(1) simila r or equal to m(2) similar or equal to root Deltam(atm)(2)/sin 2 theta and m(3)/m(1) similar or equal to cos 2 theta, where theta is the solar mixing angle. (C) 2001 Published by Elsevier Science B.V.