Status Report on Universal Extra Dimensions After LHC8
arXiv:1401.4176 · doi:10.1142/S0217732315400118
Abstract
Although they do not address the hierarchy problem, models with Universal Extra Dimensions have attracted a lot of attention as simple benchmark models characterized by small mass splittings and a dark matter WIMP played by the Lightest Kaluza-Klein particle (LKP). We review their status, with emphasis on the minimal implementation in 5 dimensions (MUED) in which the LKP is a massive hypercharge gauge boson. In this case, the mass range accounting for the correct dark matter abundance (around 1.4 TeV) remains untouched by LHC8 and is out of reach of present DM direct detection experiments. However, LHC14 can probe the relevant region in the 3-lepton channel.
Invited review for special issue on "Extra dimensions vs Collider Physics" to appear in IJMPA. 14 pages, 9 figures; v2: Figure 5 clarified and references added; v3:comment added on low cutoff case
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- Current LHC Constraints on Minimal Universal Extra Dimensions
- LHC Collider Phenomenology of Minimal Universal Extra Dimensions
- Rare Top Decays in Minimal and Non-minimal Universal Extra Dimension
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- Signals of Two Universal Extra Dimensions at the LHC
- Universal Extra Dimension models with gravity mediated decays after LHC Run II data
- Effects of universal extra dimensions on top-quark electromagnetic interactions
- Gauge-invariant approach to the beta function in Yang-Mills theories with universal extra dimensions
- Naturally Resonant Dark Matter from Extra Dimensions
- On Production of Excited Kaluza-Klein States in Large Radius Compactification Scenario