Two-Higgs-Doublet Models with CP violation

Abstract

We consider the Two-Higgs-Doublet Model and determine the range of parameters for which CP violation and Flavor Changing Neutral Current effects are naturally small. It corresponds to small values of the mass parameter m_{12}^2, describing soft (ϕ_1,ϕ_2) mixing in the potential. We discuss how, in this approach, some Higgs bosons can be heavy, with mass of the order of 1 TeV. The possibility that at the Tevatron, LHC and an e^+e^- Linear Collider, only one Higgs boson will be found, with properties indistinguishable from those in the Standard Model (SM), we define as the SM-like scenario. While this scenario can be obtained with large μ^2 \sim \Re m_{12}^2 parameter, in which case there is decoupling, we here discuss the opposite case of small μ^2, without decoupling.

5 pages, LaTeX, including figures. Presented at SUSY02, DESY, June 2002 and LCWS02, Jeju, Korea, August 2002. To appear in the proceedings. Version 2: minor changes, additional references

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