  Composite Higgs models, where the Higgs boson is identified with the
pseudo-Nambu-Goldstone-Boson (pNGB) of a strong sector, typically have light
composite fermions (top partners) to account for a light Higgs. This type of
models generically also predicts the existence of heavy vector fields
(composite gluons) which appear as an octet of QCD. These composite gluons
generically become very broad resonances once phase-space allows them to decay
into two composite fermions. This makes their traditional experimental
searches, which are designed to look for narrow resonances, quite ineffective.
In this paper we, as an alternative, propose to utilize the impact of composite
gluons on the production of top partners to constrain their parameter space. We
place constraints on the parameters of the composite resonances using the 8 TeV
LHC data and also assess the reach of the 14 TeV LHC. We find that the high
luminosity LHC will be able to probe composite gluon masses up to $\sim 6$ TeV,
even in the broad resonance regime.
