Yukawa couplings behavior for mass degenerate spectrum in Two Higgs Doublet Model

The event excess reported by CMS and ATLAS collaborations from difotonic and ζζ* → 4l channels allow a signal discrimination at regime between 125-126 GeV. This result could open a new window in the Extender Higgs Sector applicability like phenomenological implications of Two Higgs Doublet Model (2HDM) even with its possible incoming strong experimental constraints. There are two phenomenological extreme regimes on 2HDM that could still be compatible with data: the decoupling limit and the scalar degenerate mass spectrum. The first one is based in the supposition that the lightest scalar Higgs has the same couplings than minimal Higgs while the other Higgs reside ar energy scale higher than the electroweak cut (i.e ΛEW << Λ2H D M). In the second one, all neutral Higgs have similar mass values (e.g mho ∼≅ mh2 ∼≅ mAo with sin(β - α) ∼≅ 1) which approximately reproduce observed data and the signal from γ γ and four leptons channels. For this parameter region, we study in CP-conserving frame the behavior of Yukawa sector in 2HDM type I, II and III through f f- → W+W- processes at tree level. For 2HDM-III, we make a discrimination between diagonal Yukawa couplings with aim to analyze their influence in Flavor Changing Neutral Currents processes and their behavior between the CP-even scalar Higgs. (Author)