Abstract
We start by presenting the current status of a complex flavour conserving two-Higgs doublet model. We will focus on some very interesting scenarios where unexpectedly the light Higgs couplings to leptons and to b-quarks can have a large pseudoscalar component with a vanishing scalar component. Predictions for the allowed parameter space at end of the next run with a total collected luminosity of 300 fb −1 and 3000 fb −1 are also discussed. These scenarios are not excluded by present data and most probably will survive the next LHC run. However, a measurement of the mixing angle ϕ τ , between the scalar and pseudoscalar component of the 125 GeV Higgs, in the decay h → τ +τ − will be able to probe many of these scenarios, even with low luminosity. Similarly, a measurement of ϕ t in the vertex \( \overline{t}th \) could help to constrain the low tan β region in the Type I model.
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Fontes, D., Romão, J.C., Santos, R. et al. Large pseudoscalar Yukawa couplings in the complex 2HDM. J. High Energ. Phys. 2015, 60 (2015). https://doi.org/10.1007/JHEP06(2015)060
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DOI: https://doi.org/10.1007/JHEP06(2015)060