H. S. Cheon, Sin Kyu Kang
We explore the implications of a 125 GeV Higgs boson indicated by the recent LHC results for two-Higgs doublet model (2HDM). Identifying the 125 GeV Higgs boson as either the lighter or heavier of CP even neutral Higgs bosons in 2HDM, we examine how the masses of Higgs fields and mixing parameters can be constrained by the theoretical conditions and experimental constraints. The theoretical conditions taken into accunt are the vacuum stability and perturbativity required to be satisfied up to a cut-off scale. We also show how bounds on the masses of Higgs bosons and mixing parameters depend on the cut-off scale. In addition, we determine the regions of parameter space accommodating the enhanced di-photon signals and then predict the signal strengths for other accessible channels of the Higgs decay for the regions.
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http://arxiv.org/abs/1207.1083
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