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Based on extended $SU(2)_1 \times SU(2)_2 \times U(1)_\text{X}$ gauge groups,$G(221)$ models predict the existence of an additional heavy gauge boson $W'$and of a heavy charged Higgs boson $H^\pm$. Within this model we calculate thecoupling of the $W'$ to $(h,H^{\pm})$, where $h$ can be identified with theStandard Model Higgs boson discovered recently at LHC. Using a phenomenologicalconstraint on the ratio of the symmetry breaking scales in $G(221)$ models, the$W' \to hH^{\pm}$ decay width and the $(h,H^{\pm})$ production cross sectionvia an intermediate $W'$ in $pp$ collisions at $\sqrt{s} = 8$ TeV arecalculated. Fiducial cross sections obtained with $G(221)$ models for severalfinal states are compared with recent results in searches for supersymmetry atLHC published by the ATLAS Collaboration.

$W' \to hH^{\pm}$ decay in $G(221)$ models