Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-03-28
Phys.Rev.D75:075016,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 6 figures. Accepted for publication in Physical Review D
Scientific paper
10.1103/PhysRevD.75.075016
A phenomenological analysis of the three-family model based on the local gauge group $SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ 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 group and show some conditions to achieve a low 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.
Gutiérrez Diego A.
Ponce William A.
Salazar Juan C.
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