Kaluza-Klein Dark Matter: Direct Detection vis-a-vis LHC (IDM 2008 proceeding)

Understand

We explore the phenomenology of Kaluza-Klein (KK) dark matter in very general models with universal extra dimensions (UEDs), emphasizing the complementarity between high-energy colliders and dark matter direct detection experiments.

• In models with relatively small mass splittings between the dark matter candidate and the rest of the (colored) spectrum, the collider sensitivity is diminished, but direct detection rates are enhanced.
• UEDs provide a natural framework for such mass degeneracies.
• We consider both 5-dimensional and 6-dimensional non-minimal UED models, and discuss the detection prospects for various KK dark matter candidates: the KK photon \gamma_1 (5D) the KK Z-boson Z_1 (5D) and the spinless KK photon \gamma_H (6D).