Universal Extra Dimensions and the Higgs Boson Mass

Details Universal Extra Dimensions and the Higgs Boson Mass Universal Extra Dimensions and the Higgs Boson Mass

2002-11-04

arxiv.org/abs/hep-ph/0211023v2

Phys.Rev.D67:055002,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, Latex, 6 eps figures, an error in calculations was corrected and results of analysis changed accordingly, references

Scientific paper

10.1103/PhysRevD.67.055002

We study the combined constraints on the compactification scale 1/R and the Higgs mass m_H in the standard model with one or two universal extra dimensions. Focusing on precision measurements and employing the Peskin-Takeuchi S and T parameters, we analyze the allowed region in the (m_H, 1/R) parameter space consistent with current experiments. For this purpose, we calculate complete one-loop KK mode contributions to S, T, and U, and also estimate the contributions from physics above the cutoff of the higher-dimensional standard model. A compactification scale 1/R as low as 250 GeV and significantly extended regions of m_H are found to be consistent with current precision data.

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