tbW anomalous couplings in the Two Higgs Doublet Model

Muon Anomalous Magnetic Moment , Two - Higgs - Doublet Model , and Supersymmetry

The recent measurement of the muon anomalous magnetic moment aμ shows a 2.6σ deviation from the standard model value. We show that it puts strong constraints on the parameter space of the two-Higgs doublet model (2HDM) II. The dominant contribution of the Higgs bosons comes at the two-loop level, and in order to explain the data it favors a pseudoscalar A with a light mass range and a large tan...

Top quark anomalous tensor couplings in the two-Higgs-doublet models

We compute the one loop right and left anomalous tensor couplings (gR and gL, respectively) for the top quark, in the aligned two-Higgsdoublet model. They are the magnetic-like couplings in the most general parameterization of the tbW vertex. We find that the aligned two-Higgs doublet model, that includes as particular cases some of the most studied extensions of the Higgs sector, introduces ne...

Electroweak phase transition and Higgs self-couplings in the two-Higgs-doublet model

We calculate both the cubic and the quartic self-couplings of the lighter scalar Higgs boson without assuming the decoupling limit in the two-Higgs-doublet model (THDM). In some regions of parameter space of the THDM where the electroweak phase transition is strongly first order, it is possible that the quartic self-coupling of the lighter scalar Higgs boson might be deviated by at least 40 % f...

In the Two - Higgs Doublet - Model

Simple Two Higgs Doublet Model