  We report the results of a global analysis of dark matter simplified models
(DMSMs) with leptophobic mediator particles of spin one, considering the cases
of both vector and axial-vector interactions with dark matter (DM) particles
and quarks. We require the DMSMs to provide all the cosmological DM density
indicated by Planck and other observations, and we impose the upper limits on
spin-independent and -dependent scattering from direct DM search experiments.
We also impose all relevant LHC constraints from searches for monojet events
and measurements of the dijet mass spectrum. We model the likelihood functions
for all the constraints and combine them within the MasterCode framework, and
probe the full DMSM parameter spaces by scanning over the mediator and DM
masses and couplings, not fixing any of the model parameters. We find, in
general, two allowed regions of the parameter spaces: one in which the mediator
couplings to Standard Model (SM) and DM particles may be comparable to those in
the SM and the cosmological DM density is reached via resonant annihilation,
and one in which the mediator couplings to quarks are $\lesssim 10^{-3}$ and DM
annihilation is non-resonant. We find that the DM and mediator masses may well
lie within the ranges accessible to LHC experiments. We also present
predictions for spin-independent and -dependent DM scattering, and present
specific results for ranges of the DM couplings that may be favoured in
ultraviolet completions of the DMSMs.
