Asymmetric left-right model for generating radiative quark and lepton masses

The conventional $\mathrm{SU}{\mathrm{}\left(2\right)\mathrm{}}_L\times \mathrm{SU}{\mathrm{}\left(2\right)\mathrm{}}_R\times \mathrm{U}\mathrm{}\left(1\right)\mathrm{}$ electroweak gauge model is extended to include two heavy singlet quarks and one heavy singlet lepton. The scalar sector consists of two (2,1,½) doublets, two (1,2,½) doublets, one (2,1,$\frac{3}{2}$) doublet, one (1,2,$\frac{3}{2}$) doublet, as well as one (1,3,1) triplet. Realistic radiative masses for all light quarks and leptons are obtained. A $Z_2$ discrete symmetry serves to distinguish the electron (or muon) and its neutrino from the other leptons.