Stability of the Higgs mass in theories with extra dimensions
Abstract
We analyze the ultraviolet stability of the Higgs mass in recently proposed Kaluza-Klein models compactified on S1/Z2 or S1/(Z2× Z2'), both at the field theory and string theory level. Fayet-Iliopoulos terms of U(1) hypercharge are shown to be of vital importance for this discussion. Models with a single Higgs doublet seem to be generically affected by quadratic divergences.
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