Hiding a Higgs width enhancement from off-shell gg (--> h*) --> ZZ measurements

Abstract

Measurements of the off-shell Higgs boson production cross section in gg (--> h*) --> ZZ have recently been used by the CMS and ATLAS collaborations to indirectly constrain the total width of the Higgs boson. I point out that the interpretation of these measurements as a Higgs width constraint can be invalidated if additional neutral Higgs boson(s) are present with masses below about 350 GeV.

5 pages, 1 figure. v2: refs added, minor improvements to text. v3: expanded discussion, refs added, version accepted by PRD

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Cited by in corpus (17)

• Combined measurements of Higgs boson production and decay using up to $80$ fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment
• Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector
• Soft gluon resummation in the signal-background interference process of $gg(\to h^{\ast })\to ZZ$
• Interference in the $gg\to h\to \gamma \gamma$ On-Shell Rate and the Higgs Boson Total Width
• Four-lepton production in gluon fusion at NLO matched to parton showers
• Probing the top-quark width through ratios of resonance contributions of $e^{+}{e}^{-}\to W^{+}{W}^{-}b\bar{b}$
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC
• Two Higgs bosons near 125 GeV in the NMSSM: beyond the narrow width approximation
• Combining LEP and LHC to bound the Higgs Width
• Signal-background interference for a singlet spin-0 digluon resonance at the LHC
• Higgs interference effects at the one-loop level in the 1-Higgs-Singlet extension of the Standard Model
• Signal-background interference effects in Higgs-mediated diphoton production beyond NLO
• Higgs interference effects in top-quark pair production in the 1HSM
• Signal-background interference for digluon resonances at the Large Hadron Collider
• What can we learn from the total width of the Higgs boson?
• Interference effects in Heavy Higgs production via gluon fusion in the Singlet Extension of the Standard Model
• Off-shell effects in Higgs decays to heavy gauge bosons and signal-background interference in Higgs decays to photons at a linear collider