The top-quark window on compositeness at future lepton colliders

Abstract

In composite Higgs (CH) models, large mixings between the top quark and the new strongly interacting sector are required to generate its sizeable Yukawa coupling. Precise measurements involving top as well as left-handed bottom quarks therefore offer an interesting opportunity to probe such new physics scenarios. We study the impact of third-generation-quark pair production at future lepton colliders, translating prospective effective-field-theory sensitivities into the CH parameter space. Our results show that one can probe a significant fraction of the natural CH parameter space through the top portal, especially at TeV centre-of-mass energies.

20 pages, 2 figures, 3 tables

References in corpus (13)

• A custodial symmetry for Zbb
• A unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures
• ILC Operating Scenarios
• A global view on the Higgs self-coupling at lepton colliders
• The Baryon Asymmetry from a Composite Higgs
• Top-Quark Physics at the CLIC Electron-Positron Linear Collider
• Learning from Higgs Physics at Future Higgs Factories
• Interpreting top-quark LHC measurements in the standard-model effective field theory
• Global and optimal probes for the top-quark effective field theory at future lepton colliders
• On Flavour and Naturalness of Composite Higgs Models
• Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter
• Measurement of b quark EW couplings at ILC
• Tree-level Quartic for a Holographic Composite Higgs

Cited by in corpus (13)

• Putting SMEFT Fits to Work
• The electro-weak couplings of the top and bottom quarks -- global fit and future prospects
• Tests of the Standard Model at the International Linear Collider
• Quantum tops at circular lepton colliders
• Learning from Radiation at a Very High Energy Lepton Collider
• The top quark electro-weak couplings after LHC Run 2
• Broad toplike vector quarks at LHC and HL-LHC
• Impact of a colored vector resonance on the collider constraints for top-like top partner
• Constraining New Physics with Single Top production at LHC
• Dilaton at the LHC: Complementary Probe of Composite Higgs
• Higgs, top and electro-weak precision measurements at future $e^{+}{e}^{-}$ colliders; a combined effective field theory analysis with renormalization mixing
• Constants of motion in gravitational self-force theory
• Single-spin measurements and heavy new physics in the $e^{+}{e}^{-}\to t\bar{t}$ process at an FCC-ee