Effective Neutrino Masses from Four Flavor Neutrino Mixing Matrix

Abstract We consider the four neutrino oscillation that accommodate all data. range of corresponding mixing parameters by result experiments. Implicaion search for mass square difference and are discussed. determine possible values effective majorana $|<m>|=|{\sum }_{j}U_{ej}^{2}m_{j}|$ |<m>|=|∑jUej2mj| in scenario. In four-neutrino scheme there is an upper bound on | < m > normal order 2.0074eV α = 0 ∘ , β a n d γ . case inverted 2.0069eV