Right-right-left extension of the standard model

A right-right-left extension of the standard model is proposed. In this model, the standard model gauge group $SU(2{)}_L\otimes U(1{)}_Y$ is extended to $SU(2)_L \otimes SU(2)_R \otimes SU(2)^{\prime}_R \otimes SU(2)^{\prime}L \otimes U(1){Y}$\mathrm{.}Thegaugesymmetries$SU(2)^{\prime}_R$,$SU(2)^{\prime}_L$arethemirrorcounter-partsofthe$SU(2)_L$and$SU(2)_R$ respectively. Parity is spontaneously broken when the scalar Higgs fields acquire vacuum-expectation values in a certain pattern. Parity is restored at the scale of $SU(2{)}_L^{\mathrm{\prime }}$. The gauge sector has a unique pattern. The scalar sector of the model is optimum, elegant and unique.