W' → hH± decay in G(221) models

Based on extended SU(2)(1) x SU(2)(2) x U(1)(X) gauge groups, G(221) models predict the existence of an additional heavy gauge boson W' and of a heavy charged Higgs boson H-+/-. Within this model we calculate the coupling of W' to the hH(+/-) pair, where h can be identified with the standard model Higgs boson discovered recently at LHC. Using a phenomenological constraint on the ratio of the symmetry breaking scales in G(221) models, the W' -> hH(+/-) decay width and the hH(+/-) production cross section via an intermediate W' in pp collisions at root s = 8 and 14 TeV are calculated. Fiducial cross sections obtained with G(221) models for several final states produced at LHC through the W' -> hH(+/-) decay are compared with recent results in searches for supersymmetry published by the ATLAS Collaboration.