Dynamical gauge symmetry breaking in an SU(3)L⊗U(1)X extension of the standard model -: art. no. 075001

We study the SU(3)(L)xU(1)(x) extension of the standard model with a strong U(1) coupling. We argue that current experiments limit this coupling to be relatively large. The model is dynamically broken to the standard SU(2)(L)xU(1) model at the scale of a few TeV with all the extra gauge bosons and the exotic quarks acquiring masses much larger than the scale of electroweak symmetry breaking. Furthermore we find that the model naturally displays the top condensation mechanism for the dynamical breakdown of electroweak gauge symmetry. By adding an SU(3)(L) singlet quark chi, we find that the model can fit the experimental masses of the top quark and the W,Z bosons. Based on the dynamical symmetry breaking mechanism we predict the masses of the exotic quarks in this model to be of the order of a few TeV.