Phenomenology of the SU(3)c ⊗ SU(3)L ⊗ U(1)X model with exotic charged leptons

A phenomenological analysis of the three-family model based on the local gauge group SU(3)(c)circle times SU(3)(L)circle times U(1)(X) with exotic charged leptons, is carried out. Instead of using the minimal scalar sector able to break the symmetry in a proper way, we introduce an alternative set of four Higgs scalar triplets, which combined with an anomaly-free discrete symmetry, produce quark and charged lepton mass spectrum without hierarchies in the Yukawa coupling constants. We also embed the structure into a simple gauge group and show some conditions to achieve a low energy gauge coupling unification, avoiding possible conflict with proton decay bounds. By using experimental results from the CERN-LEP, SLAC linear collider, and atomic parity violation data, we update constraints on several parameters of the model.