Takuya Kakuda, Kenji Nishiwaki, Kin-ya Oda, Ryoutaro Watanabe
We show bounds on five- and six-dimensional universal extra dimension (UED) models from the latest results of the Higgs searches at the LHC and from the electroweak precision data for the S and T parameters. We consider the minimal UED model in five dimensions and the six-dimensional ones. The highest possible ultraviolet cutoff scale for each UED model is evaluated from the electroweak vacuum stability by solving the renormalization group equation of the Higgs self coupling. The resultant bound on the first KK scale in the minimal UED model is 650 GeV from the LHC results and 700 GeV from the S, T analysis, both at the 95% confidence level, while those in the 6D UED models are 850--1350 GeV and 900--1500 GeV, respectively.
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http://arxiv.org/abs/1305.1686
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