SU(4)_L X U(1)_X three-family model for the electroweak interaction

Luis A. Sanchez, Luis A. Wills-Toro, Jorge I. Zuluaga

An extension of the gauge group $SU(2{)}_L\otimes U(1{)}_Y$ of the standard model to the symmetry group $SU(4{)}_L\otimes U(1{)}_X$ (3-4-1 for short) is presented. The model does not conta…