On The Global Symmetry L(e)—L(μ)—L(τ) In A 3-3-1 Gauge Model With Right-handed Neutrinos

Abstract

The flavor symmetry breaking of nucleon sea in the valon model AIP Conf. Proc. 915, 502 (2007); Abstract. A plausible scenario with conserved lepton number L = L(e)−L(μ)−L(τ) is considered within the framework of the exact solution of the particular 3-3-1 gauge model. We discuss the consequences of conserving this global lepton symmetry from the viewpoint of the neutrino mass matrix constructed via special Yukawa terms. We prove that the actual experimental data can naturally be reproduced by our scenario, since soft breaking terms with respect to this lepton symmetry are properly introduced. As a consequence, our solution predicts for the neutrino sector the correct mass splitting ratio, the inverted mass hierarchy, the correct values for the observed mixing angles and the absolute mass of the lightest neutrino (order of magnitude 0.001eV) independent of the breaking scale of the model.