  Based on recent LHC Higgs analyses and in anticipation of future results we
revisit theories where Higgs bosons can couple to weak gauge bosons with
enhanced strength relative to the Standard Model value. Specifically, we look
at the Georgi-Machacek model and its generalizations where higher "spin"
representations of SU(2)_L break electroweak symmetry while maintaining
custodial SU(2). In these theories, there is not only a Higgs-like boson but
partner Higgs scalars transforming under representations of custodial SU(2),
leading to a rich phenomenology. These theories serve as a consistent
theoretical and experimental framework to explain enhanced couplings to gauge
bosons, including fermiophobic Higgses. We focus on the phenomenology of a
neutral scalar partner to the Higgs, which is determined once the Higgs
couplings are specified. Depending on the parameter space, this partner could
have i) enhanced fermion and gauge boson couplings and should be searched for
at high mass (> 600 GeV), ii) have suppressed couplings and could be searched
for at lower masses, where the Standard Model Higgs has already been ruled out,
and iii) have fermiophilic couplings, where it can be searched for in heavy
Higgs and top resonance searches. In the first two regions, the partner also
has substantial decay rates into a pair of Higgs bosons. We touch briefly on
the more model-dependent effects of the nontrivial SU(2)_C multiplets, which
have exotic signals, such as a doubly-charged Higgs. We also discuss how the
loop induced effects of these scalars tend to reduce the Higgs decay rate to
photons, adding an additional uncertainty when extracting the couplings for the
Higgs boson.
