  This letter presents new results on the combined sensitivity of the LHC and
underground dark matter search experiments to the lightest neutralino as WIMP
candidate in the minimal Supersymmetric extension of the Standard Model. We
show that monojet searches significantly extend the sensitivity to the
neutralino mass in scenarios where scalar quarks are nearly degenerate in mass
with it. The inclusion of the latest bound by the LUX experiment on the
neutralino-nucleon spin-independent scattering cross section expands this
sensitivity further, highlighting the remarkable complementarity of
jets/$\ell$s+MET and monojet at LHC and dark matter searches in probing models
of new physics with a dark matter candidate. The qualitative results of our
study remain valid after accounting for theoretical uncertainties.
