$SU(3{)}_c\otimes SU(3{)}_L\otimes U(1{)}_X$ models with four families

Abstract

In the context of the local gauge group $SU(3{)}_c\otimes SU(3{)}_L\otimes U(1{)}_X$, we look for possible four family models, where all the particles carry ordinary electric charges. Thirteen different anomaly-free fermion structures emerge, out of which only two are realistic. For the simplest physical structure, we calculate the charged and neutral weak currents and the tree-level Fermion masses. We also look for new sources of flavor changing neutral currents in the quark sector, in connection with the upcoming experimental results at the Large Hadron Collider.

Accepted for publication in Phys. Rev. D

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