LHC experiments have discovered a new boson with mass of about 126 GeV
and properties consistent with the Standard Model (SM) Higgs.
The next stage will be to determine whether this Higgs-like particle
is fully responsible for the generation of the masses of the other SM
particles. If not, then additional new physics must be present to play
this role.
I will consider models with a light neutral Higgs boson that is part
of an extended Higgs sector and I will discuss a phenomenological
approach to search for a second scalar particle in the high mass
region by using the current searches in the SM framework.