Prospects for the determination of the top-quark Yukawa coupling at future $e^{+}{e}^{-}$ colliders

Abstract

We estimate the sensitivity to the top-quark Yukawa coupling $y_t$ at future $e^{+}{e}^{-}$ colliders. We go beyond the standard approach that focuses on $t\bar{t}h$ production and consider final states with a Higgs boson but not top quarks. The sensitivity to $y_t$ in such processes comes from the coupling of the Higgs boson to top quarks in loops. Such final states can be produced in significant numbers at center-of-mass energies that will be accessible by all proposed $e^{+}{e}^{-}$ colliders. In a simplified theoretical framework to parametrise deviations from the Standard Model, we find that at FCC-$ee$ and CEPC operating at $\sqrt{s}=240$ GeV, $y_t$ could potentially be measured with precision better than $1\%$. For CLIC and ILC the extraction of $y_t$ could be improved by a factor of about 2 and 7 respectively, compared to its extraction from just $t\bar{t}h$ final states.

arXiv comment14 pages, 2 figures. v2 (published version): added references, extended discussion

References in corpus (55)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Higgs mass and vacuum stability in the Standard Model at NNLO
• Investigating the near-criticality of the Higgs boson
• Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
• WHIZARD: Simulating Multi-Particle Processes at LHC and ILC
• Renormalization Group Evolution of the Standard Model Dimension Six Operators II: Yukawa Dependence
• Renormalization Group Evolution of the Standard Model Dimension Six Operators I: Formalism and lambda Dependence
• The Standard Model as an Effective Field Theory
• First Look at the Physics Case of TLEP
• The top quark and Higgs boson masses and the stability of the electroweak vacuum
• pySecDec: a toolbox for the numerical evaluation of multi-scale integrals
• Handbook of LHC Higgs Cross Sections: 2. Differential Distributions
• Higgs boson pair production in gluon fusion at NLO with full top-quark mass dependence
• Updated Global SMEFT Fit to Higgs, Diboson and Electroweak Data
• Full top quark mass dependence in Higgs boson pair production at NLO
• Higgs windows to new physics through d = 6 operators: Constraints and one-loop anomalous dimensions
• Complete Higgs Sector Constraints on Dimension-6 Operators
• Towards the Ultimate SM Fit to Close in on Higgs Physics
• Higgs Physics at the CLIC Electron-Positron Linear Collider
• The Gauge-Higgs Legacy of the LHC Run I
• NLO QCD corrections to Higgs boson plus jet production with full top-quark mass dependence
• A global view on the Higgs self-coupling
• Next-to-next-to-next-to-leading order QCD prediction for the top anti-top S-wave pair production cross section near threshold in e+ e- annihilation
• Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD
• Current and future constraints on Higgs couplings in the nonlinear Effective Theory
• Probing the Higgs self coupling via single Higgs production at the LHC
• A global view on the Higgs self-coupling at lepton colliders
• Trilinear Higgs coupling determination via single-Higgs differential measurements at the LHC
• On the ultimate uncertainty of the top quark pole mass
• The CLIC Potential for New Physics
• Constraints on the trilinear Higgs coupling from vector boson fusion and associated Higgs production at the LHC
• Measuring Higgs Couplings at a Linear Collider
• The leptonic future of the Higgs
• Scheming in the SMEFT... and a reparameterization invariance!
• Updated baseline for a staged Compact Linear Collider
• Effective field theory approach to LHC Higgs data
• Sensitivities of Prospective Future e+e- Colliders to Decoupled New Physics
• Associated Production of Higgs Bosons and a Photon in High-Energy $e^{+}{e}^{-}$ Collisions
• Constraining the Higgs self couplings at $e^{+}{e}^{-}$ colliders
• Higgs-photon associated production at $e\bar{e}$ colliders
• Dimension-six electroweak top-loop effects in Higgs production and decay
• NLO Higgs+jet at large transverse momenta including top quark mass effects
• Double-Higgs boson production in the high-energy limit: planar master integrals
• Near-threshold production of heavy quarks with QQbar_threshold
• Dimension-6 Operator Analysis of the CLIC Sensitivity to New Physics
• Non-resonant and electroweak NNLO correction to the $e^{+}{e}^{-}$ top anti-top threshold
• Measuring the Top Yukawa Coupling at 100 TeV
• Implications of CP-violating Top-Higgs Couplings at LHC and Higgs Factories
• Higgs effects in top anti-top production near threshold in e+ e- annihilation
• Bottom Quark Mass from ${\rm Y}$ Sum Rules to $\mathcal{O}({\alpha }_s^3)$
• Two-loop amplitudes for processes $gg\to Hg,qg\to Hq$ and $q\bar{q}\to Hg$ at large Higgs transverse momentum
• Loopedia, a Database for Loop Integrals
• Next-to-leading-order QCD corrections to $e^{+}{e}^{-}\to H+\gamma$
• Higgs boson couplings: measurements and theoretical interpretation
• Systematic approximation of multi-scale Feynman integrals

Cited by in corpus (5)

• Precision Higgs Physics at CEPC
• On the future of Higgs, electroweak and diboson measurements at lepton colliders
• Top-Quark Physics at the CLIC Electron-Positron Linear Collider
• The electro-weak couplings of the top and bottom quarks -- global fit and future prospects
• Investigating Bottom-Quark Yukawa Interaction at Higgs Factory