Warped 5D standard model consistent with EWPT

doi:10.1002/prop.201100054

Warped 5D standard model consistent with EWPT

2011-05-30

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DOI：10.1002/prop.201100054

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For a 5D Standard Model propagating in an AdS background with an IR localized Higgs, compatibility of bulk KK gauge modes with EWPT yields a phenomenologically unappealing KK spectrum (m(KK) >= 12.5 TeV) and leads to a little hierarchy problem. For a bulk Higgs the solution to the hierarchy problem reduces the previous bound only by similar to root 3. As a way out, models with an enhanced bulk gauge symmetry SU(2)(R) x U(1)(B-L) were proposed. In this note we describe a much simpler (5D Standard) Model, where introduction of an enlarged gauge symmetry is no longer required. It is based on a warped gravitational background which departs from AdS at the IR brane and a bulk propagating Higgs. The model is consistent with EWPT for a range of KK masses within the LHC reach. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords:

Extra dimensions

electroweak breaking

warped spaces

Warped 5D standard model consistent with EWPT

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