Kaluza-Klein Dark Matter: Direct Detection vis-a-vis LHC (2013 update)
2013
We present updated results on the complementarity between high-energy
collidersand
dark matterdirect detection experiments in the context of
Universal Extra Dimensions(UED). In models with relatively small mass splittings between the
dark mattercandidate and the rest of the (colored) spectrum, the
collidersensitivity is diminished, but direct detection rates are enhanced. UED provide a natural framework to study such mass degeneracies. We discuss the detection prospects for the KK photon $\gamma_1$ and the KK $Z$-boson $Z_1$, combining the expected LHC reach with cosmological constraints from WMAP/Planck, and the sensitivity of current or planned direct detection experiments. Allowing for general mass splittings, neither
colliders, nor direct detection experiments by themselves can explore all of the relevant KK
dark matter
parameter space. Nevertheless, they probe different
parameter spaceregions, and the combination of the two types of constraints can be quite powerful.
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