Constraints on split-UED from Electroweak Precision Tests

Abstract

We present strongly improved electroweak precision constraints on the split-UED model. We find that the dominating effect arises from contributions to the muon decay rate by the exchange of even-numbered W-boson Kaluza-Klein modes at tree-level, which so far have not been discussed in the context of UED models. The constraints on the split-UED parameter space are translated into bounds on the mass difference of the first Kaluza-Klein mode of fermions and the lightest Kaluza-Klein mode, which will be tested is the LHC.

4 pages, 2 figures

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• A Review on Non-Minimal Universal Extra Dimensions
• Non-minimal UED confronts $B_s\to {\mu }^{+}{\mu }^{-}$
• Minimal and non-minimal Universal Extra Dimension models in the light of LHC data at 13 TeV
• Active Dirac Neutrinos via $SU(2{)}_L$ Doublets in 5d
• Possible Suppression of Resonant Signals for Split-UED by Mixing at the LHC?
• $B$ anomalies in the nonminimal universal extra dimension model