  We perform frequentist and Bayesian statistical analyses of Higgs- and
Z-portal models of dark matter particles with spin 0, 1/2 and 1. Our analyses
incorporate data from direct detection and indirect detection experiments, as
well as LHC searches for monojet and monophoton events, and we also analyze the
potential impacts of future direct detection experiments. We find acceptable
regions of the parameter spaces for Higgs-portal models with real scalar,
neutral vector, Majorana or Dirac fermion dark matter particles, and Z-portal
models with Majorana or Dirac fermion dark matter particles. In many of these
cases, there are interesting prospects for discovering dark matter particles in
Higgs or Z decays, as well as dark matter particles weighing $\gtrsim 100$ GeV.
Negative results from planned direct detection experiments would still allow
acceptable regions for Higgs- and Z-portal models with Majorana or Dirac
fermion dark matter particles.
