Triple Higgs coupling effect on $h^0\to b\bar{b}$ and $h^0\to {\tau }^{+}{\tau }^{-}$ in the 2HDM

Abstract

We study the one loop electroweak radiative corrections to $h^0\to b\bar{b}$ and $h^0\to {\tau }^{+}{\tau }^{-}$ in the framework of two Higgs doublet Model (2HDM). We evaluate the deviation of these couplings from their Standard Model (SM) values. $h^0\to b\bar{b}$ and $h^0\to {\tau }^{+}{\tau }^{-}$ may receives large contribution from triple couplings $h^0{H}^0{H}^0$, $H^0{h}^0{h}^0$, $h^0{A}^0{A}^0$ and $h^0{H}^{+}{H}^{-}$ which are absent in the Standard Model. It is found that in 2HDM, these corrections could be significant and may reach more than 20\% for not tow heavy $H^0$ or $A^0$ or $H^{\pm }$. We also study the ratio of branching ratios $R=BR(h^0\to b\bar{b})/BR(h^0\to {\tau }^{+}{\tau }^{-})$ of Higgs boson decays which could be used to disentangle SM from other models such as 2HDM.

18 pages, 6 figures, typos corrected, references added

References in corpus (15)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• The oblique parameters in multi-Higgs-doublet models
• Weak Radiative Decays of the B Meson and Bounds on $M_{H^{\pm }}$ in the Two-Higgs-Doublet Model
• Techniques for the calculation of electroweak radiative corrections at the one-loop level and results for W-physics at LEP200
• Precision Measurements of Higgs Couplings: Implications for New Physics Scales
• Fingerprinting the extended Higgs sector using one-loop corrected Higgs boson couplings and future precision measurements
• News from FormCalc and LoopTools
• Fingerprinting non-minimal Higgs sectors
• Constraints on and future prospects for Two-Higgs-Doublet Models in light of the LHC Higgs signal
• Gauge invariant one-loop corrections to Higgs boson couplings in non-minimal Higgs models
• Two-loop corrections to the $\rho$ parameter in Two-Higgs-Doublet Models

Cited by in corpus (7)

• H-COUP Version 2: a program for one-loop corrected Higgs boson decays in non-minimal Higgs sectors
• Probing extended Higgs sectors by the synergy between direct searches at the LHC and precision tests at future lepton colliders
• Loop effects on the Higgs decay widths in extended Higgs models
• Signature of 2HDM at Higgs Factories
• Radiative corrections to decay branching ratios of the CP-odd Higgs boson in two Higgs doublet models
• Multi-photon production in the Type-I 2HDM
• Next-to-leading-order corrections to the Higgs strahlung process from electron-positron collisions in extended Higgs models