  A gluphilic scalar dark matter (GSDM) model has recently been proposed as an
interesting vision for WIMP dark matter communicating dominantly with the
Standard Model via gluons. We discuss the collider signature of a hard jet
recoiling against missing momentum ("mono-jet") in such a construction, whose
leading contribution is at one-loop. We compare the full one-loop computation
with an effective field theory (EFT) treatment, and find (as expected) that EFT
does not accurately describe regions of parameter space where mass of the
colored mediator particles are comparable to the experimental cuts on the
missing energy. We determine bounds (for several choices of SU(3)
representation of the mediator) from the $\sqrt{s}=$ 8 TeV data, and show the
expected reach of the $\sqrt{s}=$ 13 TeV LHC and a future 100 TeV $pp$ collider
to constrain or discover GSDM models.
