Thomas Flacke, Dan Hooper, John March-Russell
Published 2005-09-29, updated 2005-10-27Version 2
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.
Comments: 15 pages, 3 figures; typos fixed, references added
Journal: Phys.Rev.D73:095002,2006; Erratum-ibid.D74:019902,2006
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