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Improved Bounds on Universal Extra Dimensions and Consequences for LKP Dark Matter

Thomas Flacke·Dan Hooper·John March-Russell
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Abstract

We study constraints on models with a flat "Universal'' Extra Dimension in which all Standard Model fields propagate in the bulk. A significantly improved constraint on the compactification scale is obtained from the extended set of electroweak precision observables accurately measured at LEP1 and LEP2. We find a lower bound of M_c = R^{-1} > 700 (800) GeV at the 99% (95%) confidence level. We also discuss the implications of this constraint on the prospects for the direct and indirect detection of Kaluza-Klein dark matter in this model.

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Thomas Flacke, Dan Hooper, John March-Russell. 2005-10-27. Improved Bounds on Universal Extra Dimensions and Consequences for LKP Dark Matter. https://doi.org/10.1103/physrevd.73.095002%2010.1103%2Fphysrevd.74.019902

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