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arXiv · 0909.3772

Pseudoscalar Higgs Boson Decays into W and Z Bosons Revisited

Werner Bernreuther·Patrick Gonzalez·Martin Wiebusch
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Abstract

We examine, in a number of Standard Model extensions, whether the decays $A \to WW/ZZ$ of a neutral pseudoscalar (Higgs) resonance can have branching ratios at the percent level and we determine the possible size of $B(A \to WW/ZZ)$ relative to the respective branching ratios of a scalar boson $H$. The branching ratios of the these decay modes and the total widths $Γ_A$, $Γ_H$ are computed in the minimal supersymmetric extension of the SM, in a type-II two-Higgs doublet extension (2HDM), in a 2HDM with 4 chiral fermion generations, in a 2HDM with additional heavy vector-like quarks, and in a top-color assisted technicolor model. We find that in the above non-supersymmetric models $B(A \to WW)$ can be about 2%, while $B(A \to ZZ) \lesssim 10^{-3}.$ The ratio $B(A \to WW)/B(H \to WW)$ can be of order 10% in large regions of the parameter space of the models.

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Werner Bernreuther, Patrick Gonzalez, Martin Wiebusch. 2009-09-21. Pseudoscalar Higgs Boson Decays into W and Z Bosons Revisited. https://arxiv.org/abs/0909.3772

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