https://doi.org/10.1140/epjc/s2006-02513-y
Theoretical Physics
Phenomenology of the 
model with right-handed neutrinos
1
Instituto de Física, Universidad de Antioquia, A.A. 1226, Medellín, Colombia
2
Escuela de Física, Universidad Nacional de Colombia, A.A. 3840, Medellín, Colombia
* e-mail: lasanche@unalmed.edu.co
Received:
12
October
2005
Revised:
21
November
2005
Published online:
24
March
2006
A phenomenological analysis of the three-family model based on the local gauge group 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.
© Springer-Verlag, 2006
