Probing the Top-Yukawa Coupling in Associated Higgs production with a Single Top Quark

Abstract

Associated production of the Higgs boson with a single top quark proceeds through Feynman diagrams, which are either proportional to the hWW, top-Yukawa, or the bottom-Yukawa couplings. It was shown in literature that the interference between the top-Yukawa and the gauge-Higgs diagrams can be significant, and thus the measurement of the cross sections can help pin down the sign and the size of the top-Yukawa coupling. Here we perform a detailed study with full detector simulations of such a possibility at the LHC-14 within the current allowed range of hWW and top-Yukawa couplings, using h-> b b-bar, γγ, τ+ τ-, ZZ* -> 4 l modes. We found that the LHC-14 has the potential to distinguish the size and the sign of the top-Yukawa coupling. Among the channels the h-> b b-bar mode mode provides the best chance to probe the signal, followed by the h -> γγ mode, which has the advantage of a narrow reconstructed mass peak. We also pointed out that the spatial separation among the final-state particles has the potential in differentiating among various values of the top-Yukawa coupling.

arXiv comment28 pages, 13 figures; a comment about NLO correction is added, references added; match the published version

References in corpus (23)

• 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
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• MadGraph 5 : Going Beyond
• Implications of CTEQ global analysis for collider observables
• Identification of b-quark jets with the CMS experiment
• Single Top Production as a Window to Physics Beyond the Standard Model
• The fully differential single-top-quark cross section in next-to-leading order QCD
• Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
• CPsuperH: a Computational Tool for Higgs Phenomenology in the Minimal Supersymmetric Standard Model with Explicit CP Violation
• Next-to-leading-order predictions for t-channel single-top production at hadron colliders
• Performance of tau-lepton reconstruction and identification in CMS
• Higgs Precision (Higgcision) Era begins
• Disentangling Higgs-Top Couplings in Associated Production
• Lifting degeneracies in Higgs couplings using single top production in association with a Higgs boson
• Associated production of Higgs and single top at hadron colliders
• Higher-order soft gluon corrections in single top quark production at the LHC
• Single top and Higgs associated production as a probe of the Htt coupling sign at the LHC
• Single top and Higgs associated production at the LHC
• Effect of Anomalous Couplings on the Associated Production of a Single Top Quark and a Higgs Boson at the LHC
• Direct constraints on the top-Higgs coupling from the 8 TeV LHC data
• Next-to-leading order QCD corrections to s-channel single top quark production and decay at the LHC
• Bounding the top Yukawa with Higgs-associated single-top production

Cited by in corpus (35)

• The Standard Model as an Effective Field Theory
• Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques
• Electroweak Sector Under Scrutiny: A Combined Analysis of LHC and Electroweak Precision Data
• Lab-frame observables for probing the top-Higgs interaction
• Single-top associated production with a $Z$ or $H$ boson at the LHC: the SMEFT interpretation
• Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies
• Anomalous Top-Higgs Couplings and Top Polarisation in Single Top and Higgs Associated Production at the LHC
• Measurement of the production cross-section of a single top quark in association with a $Z$ boson in proton--proton collisions at 13 TeV with the ATLAS detector
• Exploring the Anomalous Higgs-top Couplings
• Enhanced $thj$ signal at the LHC with $h\to \gamma \gamma$ decay and $\mathcal{C}\mathcal{P}$-violating top-Higgs coupling
• Single top-quark production at the Tevatron and the LHC
• Implications of CP-violating Top-Higgs Couplings at LHC and Higgs Factories
• Searching for Heavier Higgs Boson via Di-Higgs Production at LHC Run-2
• Constraining CP-violation in the Higgs-top-quark interaction using machine-learning-based inference
• Enhancing $thj$ Production from Top-Higgs FCNC Couplings
• Impact of top-Higgs couplings on di-Higgs production at future colliders
• Electroweak Baryogenesis with Anomalous Higgs Couplings
• Single top quark production at the LHC
• Golden Probe of the Top Yukawa
• Searches for top-Higgs FCNC couplings via the Whj signal with $h\to \gamma \gamma$ at the LHC
• Anomalous Higgs-top Coupling Pollution on Triple Higgs Coupling Extraction at Future High-Luminosity Electron-Positron Collider
• Study of top quark dipole interactions in $t\bar{t}$ production associated with two heavy gauge bosons at the LHC
• Top Yukawa coupling measurement with indefinite CP Higgs in $e^{+}{e}^{-}\to t\bar{t}\Phi$
• Associated production of single top and Higgs at the LHC in the littlest Higgs model with T-parity
• Rare Standard Model processes for present and future hadronic colliders
• The accidental Higgs
• Discovery potential of Higgs boson pair production through 4$\ell$+$E/$ final states at a 100 TeV collider
• Exploring BSM Higgs couplings in single top-quark production
• Top polarisation as a probe of CP-mixing top-Higgs coupling in $tjh$ signals
• Probing the top Yukawa coupling at the LHC via associated production of single top and Higgs
• Entangling Higgs production associated with a single top and a top-quark pair in the presence of anomalous top-Yukawa coupling
• Sensitivity to $\mathcal{C}\mathcal{P}$-violating effective couplings in the top-Higgs sector
• Enhancing $t\bar{t}hh$ production through CP-violating top-Higgs interaction at the LHC, ILC and a 100 TeV collider
• Search for the production of a Higgs boson in association with a single top quark in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Experimental searches for tHq