The role of interference in unraveling the ZZ-couplings of the newly discovered boson at the LHC

Abstract

We present a general procedure for measuring the tensor structure of the coupling of the scalar Higgs-like boson recently discovered at the LHC to two Z bosons, including the effects of interference among different operators. To motivate our concern with this interference, we explore the parameter space of the couplings in the effective theory describing these interactions and illustrate the effects of interference on the differential dilepton mass distributions. Kinematic discriminants for performing coupling measurements that utilize the effects of interference are developed and described. We present projections for the sensitivity of coupling measurements that use these discriminants in future LHC operation in a variety of physics scenarios.

29 pages, 9 Figures

References in corpus (25)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• FeynRules - Feynman rules made easy
• MCFM for the Tevatron and the LHC
• Evidence for the spin-0 nature of the Higgs boson using ATLAS data
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• A framework for Higgs characterisation
• Constraining the Higgs boson width with ZZ production at the LHC
• Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS
• Constraining anomalous HVV interactions at proton and lepton colliders
• Aspects of CP violation in the HZZ coupling at the LHC
• Bounding the Higgs Boson Width Through Interferometry
• Landau-Yang Theorem and Decays of a Z' Boson into Two Z Bosons
• Measuring spin and CP from semi-hadronic ZZ decays using jet substructure
• Higgs CP Properties From Early LHC Data
• Precision studies of the Higgs boson decay channel H -> ZZ -> 4l with MEKD
• Inadequacy of zero-width approximation for a light Higgs boson signal
• Searching for New Physics in the Three-Body Decays of the Higgs-like Particle
• Single-variable asymmetries for measuring the `Higgs' boson spin and CP properties
• Telling the spin of the "Higgs boson" at the LHC
• CP mixed property of the Higgs-like particle in the decay channel $h\to Z{Z}^{\ast }\to 4l$
• Extending the Matrix Element Method to Next-to-Leading Order
• Comment on the evidence of the Higgs boson at LHC
• Identification of the 125 GeV Resonance as a Pseudoscalar Quarkonium Meson
• Determination of the Higgs CP property in Hadron Colliders

Cited by in corpus (28)

• Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV
• Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC
• Measurements of the Higgs boson width and anomalous HVV couplings from on-shell and off-shell production in the four-lepton final state
• Constraints on anomalous Higgs boson couplings using production and decay information in the four-lepton final state
• Beyond Geolocating: Constraining Higher Dimensional Operators in $H\to 4\ell$ with Off-Shell Production and More
• Constraints on anomalous Higgs boson couplings to vector bosons and fermions in its production and decay using the four-lepton final state
• New features in the JHU generator framework: constraining Higgs boson properties from on-shell and off-shell production
• Interference effects for H --> WW/ZZ --> l anti-nu_l anti-l nu_l searches in gluon fusion at the LHC
• Probing the Higgs Couplings to Photons in $h\to 4\ell$ at the LHC
• Extracting Effective Higgs Couplings in the Golden Channel
• A note on Higgs decays into $Z$ boson and $J/\Psi ({\rm Y})$
• 8D Likelihood Effective Higgs Couplings Extraction Framework in the Golden Channel
• Probing $Zt\bar{t}$ couplings using $Z$ boson polarization in $ZZ$ production at hadron colliders
• Golden Probe of Electroweak Symmetry Breaking
• Golden Probe of the Top Yukawa
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC
• CP violation effects in the diphoton spectrum of heavy scalars
• Constraining anomalous Higgs boson couplings to virtual photons
• Higgs Boson Contributions to the Electron Electric Dipole Moment
• Angular asymmetries as a probe for anomalous contributions to HZZ vertex at the LHC
• Search for diboson resonances in the 2$\ell$2$\nu$ final state in proton-proton collisions at 13 TeV
• Decays of a neutral particle with zero spin and arbitrary CP parity into two off-mass-shell Z bosons
• Discoveries far from the Lamppost with Matrix Elements and Ranking
• Signal-background interference for digluon resonances at the Large Hadron Collider
• Disentangling the Spin-Parity of a Resonance via the Gold-Plated Decay Mode
• Measuring the mass, width, and couplings of semi-invisible resonances with the Matrix Element Method
• The Standard Model from the LHC to future colliders: a contribution to the Workshop "What Next" of INFN
• Anomalous $H\to ZZ\to 4\ell$ decay and its interference effects at the LHC