Electric charge quantization in 331 Models with exotic charges

David Romero Abad, Jose Reyes Portales, Elmer Ramirez Barreto

The extensions of the Standard Model based on the $SU(3{)}_C\otimes SU(3{)}_L\otimes U(1{)}_X$ gauge group are known as 331 Models. Different properties such as the fermion assig…