Modified Higgs couplings and unitarity violation

Abstract

Prompted by the recent observation of a Higgs-like particle at the CERN Large Hadron Collider (LHC), we investigate a quantitative correlation between possible departures of the gauge and Yukawa couplings of this particle from their Standard Model expectations and the scale of unitarity violation in the processes $WW\to WW$ and $t\bar{t}\to WW$.

6 pages, 6 eps figures, Arrayeq.sty attached; v2: minor updates, version published: PRD 87 (2013) 011702(R), Rapid Communication

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• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
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• Is the resonance at 125 GeV the Higgs boson?
• First Glimpses at Higgs' face
• New Higgs interactions and recent data from the LHC and the Tevatron
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Cited by in corpus (26)

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• A reappraisal of constraints on $Z^{\prime }$ models from unitarity and direct searches at the LHC
• Optimized probes of $CP$-odd effects in the $t\bar{t}h$ process at hadron colliders
• Enhanced $thj$ signal at the LHC with $h\to \gamma \gamma$ decay and $\mathcal{C}\mathcal{P}$-violating top-Higgs coupling
• Impact of top-Higgs couplings on di-Higgs production at future colliders
• Probing Higgs Boson $CP$ Properties with $t\bar{t}H$ at the LHC and the 100 TeV $pp$ Collider
• Anomalous Higgs Couplings as a Window to New Physics
• Hiding a Higgs width enhancement from off-shell gg (--> h*) --> ZZ measurements
• Higgs data does not rule out a sequential fourth generation with an extended scalar sector
• Unraveling the CP phase of top-Higgs coupling in associated production at the LHC
• Probing the CP properties of top Yukawa coupling at an $e^{+}{e}^{-}$ collider
• The Role of the $t\bar{t}h$ Rest Frame in Direct Top-Quark Yukawa Coupling Measurements
• Perturbative Higgs CP violation, unitarity and phenomenology
• Unitarity in composite Higgs approaches with vector resonances
• Confronting the fourth generation two Higgs doublet model with the phenomenology of heavy Higgs bosons
• Democratic three Higgs-doublet models: the custodial limit and wrong-sign Yukawa
• Top polarisation as a probe of CP-mixing top-Higgs coupling in $tjh$ signals
• Double Higgs boson production as an exclusive probe for a sequential fourth generation with wrong-sign Yukawa couplings
• Implications Of The Higgs Discovery On Physics Beyond The Standard Model
• Higgs, supersymmetry and dark matter after Run I of the LHC
• Scalar Supersymmetry in Bi-Spinor Gauge Theory
• Enhancing $t\bar{t}hh$ production through CP-violating top-Higgs interaction at the LHC, ILC and a 100 TeV collider
• Exploring the extended scalar sector with resonances in vector boson scattering