  One of the simplest extensions of the Standard Model (SM) consists in adding
a scalar singlet. This second Higgs boson is able to solve several fundamental
problems of SM. Additional scalar particles arise naturally in composite Higgs
scenarios in which some confining "strong sector" beyond the SM drives the
electroweak symmetry breaking. The underlying strongly coupled gauge theory may
be similar to QCD and could be modeled holographically. We construct a
bottom-up holographic model for description of the spectrum of composite Higgs
particles. The model is based on the holographic Soft Wall model and the Wilson
confinement criterion. The constructed model predicts the existence of a second
Higgs boson with a mass of about 515 GeV.
