A “composite” scalar–vector system at the LHC Original Research Article

In the framework of a strong dynamics for Electro-Weak Symmetry Breaking (EWSB), both vector and scalar degrees of freedom have been studied in the literature within an effective Lagrangian approach. Here we consider the case in which both a scalar, h, and a vector, V – respectively an iso-singlet and an iso-triplet under a custodial image – are relevant with a mass below the cut-off image. We study the amplitudes for the processes image. Requiring unitarity for the elastic channel image we can reduce the parameter space to two free parameters for given masses of the heavy vector and the scalar. We study the numerical total cross sections for the associated productions image by Vector Boson Fusion (VBF) and image by Drell–Yan (DY) annihilation as functions of these free parameters. The expected rates of same-sign di-lepton and tri-lepton events from the decay of the Vh final state are also given.