Scattering of W and Z Bosons at High-Energy Lepton Colliders

Abstract

We present a new study of quasi-elastic $W$ and $Z$ scattering processes in high-energy $e^{+}{e}^{-}$ collisions, based on and extrapolating the low-energy effective theory which extends the Standard Model with a 125 GeV Higgs boson. Besides parameterizing deviations in terms of the dimension-8 operators that arise in the effective theory, we also study simplified models of new physics in $W/Z$ scattering in terms of scalar and tensor resonance multiplets. The high-energy asymptotics of all models is regulated by a universal unitarization procedure. This enables us to provide benchmark scenarios which can be meaningfully evaluated off-shell and in exclusive event samples, and to determine the sensitivity of an $e^{+}{e}^{-}$ collider to the model parameters. We analyze the longitudinal vector boson scattering modes, where we optimize the cuts for the fiducial cross section for different collider scenarios. Here, we choose energy stages of 1.0, 1.4 and 3 TeV, as motivated by the extendability of the ILC project and the staging scenario of the CLIC project.

31 pages, 14 figures

References in corpus (6)

• p p -> j j e+/- mu+/- nu nu and j j e+/- mu-/+ nu nu at O(α_{em}^6) and O(α_{em}^4 α_s^2) for the Study of the Quartic Electroweak Gauge Boson Vertex at LHC
• Evidence for Electroweak Production of $W^{\pm }{W}^{\pm }jj$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
• Determination of New Electroweak Parameters at the ILC - Sensitivity to New Physics
• QCD in the Color-Flow Representation
• NLO Event Generation for Chargino Production at the ILC
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC

Cited by in corpus (10)

• Event Generators for High-Energy Physics Experiments
• Precision Test of the Muon-Higgs Coupling at a High-energy Muon Collider
• Vector Boson Scattering Processes: Status and Prospects
• Study of the projected sensitivity on the anomalous quartic gauge couplings via $Z\gamma \gamma$ production at the CLIC
• Search for the anomalous $ZZZ$ and $ZZ\gamma$ gauge couplings through the process $e^{+}{e}^{-}\to ZZ$ with unpolarized and polarized beams
• The future muon collider for the research of the anomalous neutral quartic $Z\gamma \gamma \gamma$, $ZZ\gamma \gamma$, and $ZZZ\gamma$ couplings
• Sensitivities on the anomalous quartic $\gamma \gamma \gamma \gamma$ and $\gamma \gamma \gamma Z$ couplings at the CLIC
• Anomalous production of massive gauge boson pairs at muon colliders
• Effective Field Theory and Unitarity in Vector Boson Scattering
• EVAluation of the Equivalent Vector Boson Approximation at highest energy colliders