One-loop decays $A^0\to ZZ,Z\gamma ,\gamma \gamma$ within the 2HDM and its search at the LHC

Abstract

The general two-higgs doublet model (2HDM) contains a rich spectrum of neutral and charged Higgs bosons, whose detection would be a clear signal of new physics. When the Higgs potential is CP-conserving, the spectrum includes a pseudoscalar mass eigenstate $A^0$, which does not couple to vector bosons at tree-level. However, fermionic loops (top and bottom mainly) induce the coupling $AV{V}^{\prime }$ (with $V,V^{\prime }=\gamma ,Z$) at higher orders. We evaluate the amplitude for the decays $A^0\to ZZ,Z\gamma ,\gamma \gamma$, including a generic fermionic loop contribution, and present results on the branching ratios for 2HDM-I,II and III. Current LHC searches on heavy Higgs bosons are used as an estimate to constrain the allowed mass range for $A^0$.

19 pages, 8 figures, This article has been accepted for publication in Physical Review D

References in corpus (9)

• 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
• An update of the constraints on the phenomenological MSSM from the new LHC Higgs results
• A four-dimensional approach to quantum field theories
• Pseudoscalar Higgs Bosons at the LHC: Production and Decays into Electroweak Gauge Bosons Revisited
• Slim SUSY
• Connecting (Supersymmetry) LHC Measurements with High Scale Theories
• Impact of a four-zero Yukawa texture on $h\to \gamma \gamma$ and $\gamma Z$ in the framework of the Two Higgs Doublet Model Type III
• SM Precision Constraints at the LHC/ILC

Cited by in corpus (7)

• Phenomenological Comparison of Models with Extended Higgs Sectors
• Search for ${\delta }^{\pm \pm }$ with new decay patterns at the LHC
• Limits on ALP-neutrino couplings from loop-level processes
• Pseudoscalar decays to gauge bosons at the LHC and at a future 100 TeV collider
• Probing flavor parameters in the scalar sector and new bounds for the fermion sector
• Decays $A\to Z\gamma \gamma$ and $\varphi \to Z\gamma \gamma$ ($\varphi =h,H$) in two-Higgs doublet models
• Brief description of the flavor-changing neutral scalar interactions at two-loop level