Triviality Bounds in Two-Doublet Models
Abstract
We examine perturbatively the two-Higgs-doublet extension of the \ in the context of the suspected triviality of theories with fundamental scalars. Requiring the model to define a consistent effective theory for scales below a cutoff of 2π times the largest mass of the problem, as motivated by lattice investigations of the one-Higgs-doublet model, we obtain combined bounds for the parameters of the model. We find upper limits of 470 GeV for the mass of the light CP--even neutral scalar and 650--700 GeV for the other scalar masses.
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