Signature of Pseudo Nambu-Goldstone Higgs boson in its Decay

Abstract

If the Higgs boson is a pseudo Nambu-Goldstone boson (PNGB), the $hZ\gamma$ contact interaction induced by the $\mathcal{O}(p^4)$ invariants of the non-linear sigma model is free from its nonlinearity effects. The process $h\to Z\gamma$ can be used to eliminate the universal effects of heavy particles, which can fake the nonlinearity effects of the PNGB Higgs boson in the process $h\to V^{\ast }V$ ($V=W^{\pm }$,\ $Z$). We demonstrate that the ratio of the signal strength of $h\to Z\gamma$ and $h\to V^{\ast }V$ is good to distinguish the signature of the PNGB Higgs boson from Higgs coupling deviations.

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• Composite Higgses
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Cited by in corpus (13)

• Determining the Shape of Higgs Potential at Future Colliders
• Evidence for the Higgs boson decay to a $Z$ boson and a photon at the LHC
• Resolving the degeneracy in top quark Yukawa coupling with Higgs pair production
• Probing the electroweak symmetry breaking with Higgs production at the LHC
• EFTs meet Higgs Nonlinearity, Compositeness and (Neutral) Naturalness
• Probing composite Higgs boson substructure at the HL-LHC
• Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
• Higgs boson to $\gamma Z$ decay as a probe of flavour changing neutral Yukawa couplings
• Determining Higgs boson width at electron-positron colliders
• Decays of Standard Model like Higgs boson $h\to \gamma \gamma ,Z\gamma$ in a minimal left-right symmetric model
• The SM expected branching ratio for $h\to \gamma \gamma$ and an excess for $h\to Z\gamma$
• $H\to Z\gamma$ decay and $CP$ violation
• Optimal estimation of Higgs-Gauge Boson couplings at the future $e^{+}{e}^{-}$ colliders