High energy lepton colliders as the ultimate Higgs microscopes

Abstract

We study standard electroweak/Higgs processes at the high-energy lepton colliders ILC and CLIC. We identify a subset of three operators in the SMEFT that give leading contributions to these processes at high energies. We then perform a `high-energy fit' including these operators. Our final bounds surpass existing LEP bounds and HL-LHC projections by orders of magnitude. Furthermore, we find that these colliders can probe scales up to tens of TeV, corresponding to the highest scales explored in electroweak/Higgs physics.

v3: 25 pages, 8 figures, 5 tables, minor changes, conclusions unchanged; version accepted for publication in JHEP

References in corpus (19)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
• Complete Higgs Sector Constraints on Dimension-6 Operators
• Model-independent precision constraints on dimension-6 operators
• Mass Effects in the Higgs-Gluon Coupling: Boosted vs Off-Shell Production
• Effective Theories and Measurements at Colliders
• New Higgs interactions and recent data from the LHC and the Tevatron
• Constraining Higgs boson effective couplings at electron-positron colliders
• High-energy EFT probes with fully differential Drell-Yan measurements
• Exploration of the Tensor Structure of the Higgs Boson Coupling to Weak Bosons in $e^{+}{e}^{-}$ Collisions
• Higgs characterisation in the presence of theoretical uncertainties and invisible decays
• Precision SMEFT bounds from the VBF Higgs at high transverse momentum
• The CLIC potential for new physics
• Tree boosting for learning EFT parameters
• A fully differential SMEFT analysis of the golden channel using the method of moments
• Improving Higgs coupling measurements through ZZ Fusion at the ILC
• A DELPHES card for the CLIC detector
• Physics at International Linear Collider (ILC)

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• Probing Higgs and Top Interactions through the Muon Lens at multi-TeV Muon Colliders
• An EFT study of the $pp\to \bar{t}tZ(ll)h(bb)$ process at the FCC-$\mathbf{hh}$