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Electroweak constraints on warped geometry in five dimensions and beyond

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Abstract

Here we consider the tree level corrections to electroweak (EW) observables from standard model (SM) particles propagating in generic warped extra dimensions. The scale of these corrections is found to be dominated by three parameters, the Kaluza-Klein (KK) mass scale, the relative coupling of the KK gauge fields to the Higgs and the relative coupling of the KK gauge fields to fermion zero modes. It is found that 5D spaces that resolve the hierarchy problem through warping typically have large gauge-Higgs coupling. It is also found in D> 5 where the additional dimensions are warped the relative gauge-Higgs coupling scales as a function of the warp factor. If the warp factor of the additional spaces is contracting towards the IR brane, both the relative gauge-Higgs coupling and resulting EW corrections will be large. Conversely EW constraints could be reduced by finding a space where the additional dimension’s warp factor is increasing towards the IR brane. We demonstrate that the Klebanov Strassler solution belongs to the former of these possibilities.

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Authors and Affiliations

  1. Department of Physics & Astronomy, University of Sussex, Brighton, BN1 9QH, U.K.

    Paul R. Archer & Stephan J. Huber

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  1. Paul R. Archer
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  2. Stephan J. Huber
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Correspondence to Paul R. Archer.

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ArXiv ePrint: 1004.1159

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Archer, P.R., Huber, S.J. Electroweak constraints on warped geometry in five dimensions and beyond. J. High Energ. Phys. 2010, 32 (2010). https://doi.org/10.1007/JHEP10(2010)032

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