Abstract
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 right-handed neutrinos 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, produces a quark mass spectrum without hierarchies in the Yukawa coupling constants. We also embed the structure into a simple gauge group and show some conditions for achieving 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.
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12.60.Cn, 12.15.Ff, 12.15.Mm
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Gutiérrez, D., Ponce, W. & Sánchez, L. Phenomenology of the \(SU(3)_c\otimes SU(3)_L\otimes U(1)_X\) model with right-handed neutrinos. Eur. Phys. J. C 46, 497–509 (2006). https://doi.org/10.1140/epjc/s2006-02513-y
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DOI: https://doi.org/10.1140/epjc/s2006-02513-y