Unitarity Constraints on non-minimal Universal Extra Dimensional Model

Abstract

We examine the unitarity constraints in gauge and scalar sectors of non-minimal Universal Extra Dimensional model. We show that some of the tree-level two-body scattering amplitudes in gauge and scalar sectors do not respect partial wave unitarity. Unitarity analysis of this model leads to an upper bound on corresponding boundary-localized (BLT) parameter which depends on the maximum number of Kaluza-Klein (KK) mode considered in the analysis. This upper bound of the relevant BLT parameter decreases with the increasing KK-modes. The results are, in effect, independent of the inverse of compactifiaction radius. The upper bound on BLT parameter also results in a lower bound on gauge and scalar KK-masses.

40 pages, 11 figures and 3 tables; added new discussions and figures; typos fixed; references added; matches published version

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• Non-minimal universal extra dimensions
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• KK-parity non-conservation in UED confronts LHC data
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Cited by in corpus (8)

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• Exploring non minimal Universal Extra Dimensional Model at the LHC
• Minimal and non-minimal Universal Extra Dimension models in the light of LHC data at 13 TeV
• The impact of nonminimal Universal Extra Dimensional model on $\Delta B=2$ transitions
• Belle II Constraints on the Non-Minimal Universal Extra Dimensional Model