Mass problem in the Standard Model

R. Martinez, S. F. Mantilla

We propose a new $\mathrm{SU}(3{)}_C\otimes \mathrm{SU}(2{)}_L\otimes \mathrm{U}(1{)}_Y\otimes \mathrm{U}(1{)}_X$ gauge model which is non universal respect to the three fermion fam…