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arXiv · hep-ph/9701342

The Higgs - photon - Z boson coupling revisited

A. Djouadi·V. Driesen·W. Hollik·A. Kraft
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Abstract

We analyze the coupling of CP-even and CP-odd Higgs bosons to a photon and a Z boson in extensions of the Standard Model. In particular, we study in detail the effect of charged Higgs bosons in two-Higgs doublet models, and the contribution of SUSY particle loops in the minimal supersymmetric extension of the Standard Model. The Higgs-$γZ$ coupling can be measured in the decay $Z \to γ$+Higgs at $e^+e^-$ colliders running on the Z resonance, or in the reverse process Higgs $\to Z γ$ with the Higgs boson produced at LHC. We show that a measurement of this coupling with a precision at the percent level, which could be the case at future $e^+e^-$ colliders, would allow to distinguish between the lightest SUSY and standard Higgs bosons in large areas of the parameter space.

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A. Djouadi, V. Driesen, W. Hollik, A. Kraft. 2012-08-09. The Higgs - photon - Z boson coupling revisited. https://doi.org/10.1007/bf01245806

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