Maximal CP violation in flavor neutrino masses

Since flavor neutrino masses M-mu mu,M-tau tau,M-mu tau can be expressed in terms of M-ee,(e mu),(e tau), mutual dependence among M-mu mu,M-tau tau,M-mu tau is derived by imposing some constraints on M-ee,(e mu),(e tau). For appropriately imposed constraints on M-ee,M-e mu,M-e tau giving rise to both maximal CP violation and the maximal atmospheric neutrino mixing, we show various specific textures of neutrino mass matrices including the texture with M-mu mu = M*(mu mu)derived as the simplest solution to the constraint of M-tau tau-M*(mu mu) = imaginary, which is required by the constraint of M-e mu cos theta(23) - M-e tau sin theta(23) = real for cos 2 theta(23) = 0. It is found that Majorana CP violation depends on the phase of M-ee.