Higgs couplings: disentangling New Physics with off-shell measurements

Abstract

After the discovery of a scalar resonance, resembling the Higgs boson, its couplings have been extensively studied via the measurement of various production and decay channels on the invariant mass peak. Recently, it has been suggested the possibility to use off-shell measurements: in particular, CMS has published results based on the high- invariant mass cross section of the process $gg\to ZZ$, which contains the contribution of the Higgs. While this measurement has been interpreted as a constraint on the Higgs width after very specific assumptions are taken on the Higgs couplings, in this letter we show that a much more model-independent interpretation is possible.

arXiv comment6pp, 1 figure

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• Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
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Cited by in corpus (36)

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• Mass Effects in the Higgs-Gluon Coupling: Boosted vs Off-Shell Production
• Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector
• A global view on the Higgs self-coupling
• Higgs coupling measurements at the LHC
• Taming the off-shell Higgs boson
• Indirect constraints on the Georgi-Machacek model and implications for Higgs couplings
• Constraints on off-shell Higgs boson production and the Higgs boson total width in $ZZ\to 4\ell$ and $ZZ\to 2\ell 2\nu$ final states with the ATLAS detector
• Effective field theory approach to LHC Higgs data
• Resolving the Degeneracy in Single Higgs Production with Higgs Pair Production
• Higgs Physics: It ain't over till it's over
• New features in the JHU generator framework: constraining Higgs boson properties from on-shell and off-shell production
• Higgs Couplings without the Higgs
• Soft gluon resummation in the signal-background interference process of $gg(\to h^{\ast })\to ZZ$
• Off-shell Higgs Probe to Naturalness
• Evidence of off-shell Higgs boson production from $ZZ$ leptonic decay channels and constraints on its total width with the ATLAS detector
• Resolving gluon fusion loops at current and future hadron colliders
• Higgs Couplings at High Scales
• Search for a lighter Higgs in Two Higgs Doublet Models
• Higgs characterisation in the presence of theoretical uncertainties and invisible decays
• Higgs constraints from vector boson fusion and scattering
• Hiding a Higgs width enhancement from off-shell gg (--> h*) --> ZZ measurements
• On-shell interference effects in Higgs final states
• Weak Boson Fusion at 100 TeV
• Off-shell Higgs Couplings in $H^{\ast }\to ZZ\to \ell \ell \nu \nu$
• 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
• New physics and signal-background interference in associated $pp\to HZ$ production
• Extracting the Top-Quark Width from Non-Resonant Production
• Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
• Combining LEP and LHC to bound the Higgs Width
• ZZ production at high transverse momenta beyond NLO QCD
• Bayesian Model comparison of Higgs couplings
• Adding Pseudo-Observables to the Four-Lepton Experimentalist's Toolbox
• Interference Effect on Resonance Studies in Searches of Heavy Particles
• Impact of fermionic operators on the Higgs width measurement