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

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

2005-09-29

arxiv.org/abs/hep-ph/0509352v2

Phys.Rev.D73:095002,2006; Erratum-ibid.D74:019902,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 3 figures; typos fixed, references added

Scientific paper

10.1103/PhysRevD.73.095002

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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