Bounding the top Yukawa with Higgs-associated single-top production

Abstract

After the discovery of the 125 GeV scalar boson with gauge properties similar to the Standard Model Higgs, the search for beyond the SM interactions will focus on studying the discovered particles' coupling properties more precisely and shedding light on the relation of fermion masses with the electroweak vacuum. The large mass of the top quark and the SM-predicted order one top Yukawa coupling is a natural candidate for BSM physics, though experimentally challenging to constrain. In this paper, we argue that investigating angular correlations in $pp\to tHj$ production provides an excellent handle to constrain the top Yukawa coupling $y_t$ via direct measurements, even when we focus on rare exclusive final states. We perform a hadron-level analysis and show that we may expect to constrain $y_t\gtrsim 0.5y_t^{\text{SM}}$ at 95%-99% confidence level at the high luminosity LHC using semi-leptonic top decays and $H\to \gamma \gamma$ alone, by employing a two-channel measurement approach.

Improved a couple of sentences, improved quality of fig.1, added 1 citation, matches version published in PRD

References in corpus (8)

• 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
• Herwig++ Physics and Manual
• Jet substructure as a new Higgs search channel at the LHC
• Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
• Next-to-leading-order predictions for t-channel single-top production at hadron colliders
• Constraints on CP-violating Higgs couplings to the third generation
• Electroweak Symmetry Breaking and the Higgs Boson: Confronting Theories at Colliders

Cited by in corpus (25)

• The Standard Model as an Effective Field Theory
• Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques
• Lab-frame observables for probing the top-Higgs interaction
• Resolving the Higgs-Gluon Coupling with Jets
• Better Higgs Measurements Through Information Geometry
• Exploring the Anomalous Higgs-top Couplings
• Probing the Top-Yukawa Coupling in Associated Higgs production with a Single Top Quark
• Enhanced $thj$ signal at the LHC with $h\to \gamma \gamma$ decay and $\mathcal{C}\mathcal{P}$-violating top-Higgs coupling
• Higgs-Strahlung: Merging the NLO Drell-Yan and Loop-Induced 0+1 jet Multiplicities
• Implications of CP-violating Top-Higgs Couplings at LHC and Higgs Factories
• Impact of top-Higgs couplings on di-Higgs production at future colliders
• Electroweak Baryogenesis with Anomalous Higgs Couplings
• Probing the CP properties of top Yukawa coupling at an $e^{+}{e}^{-}$ collider
• 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
• Searches for the FCNC couplings from top-Higgs associated production signal with $h\to \gamma \gamma$ at the LHC
• Measuring the signal strength in ttH with H->bb
• Mono-top Signature from Supersymmetric $t\bar{t}H$ Channel
• Perturbative Higgs CP violation, unitarity and phenomenology
• Discovery potential of Higgs boson pair production through 4$\ell$+$E/$ final states at a 100 TeV collider
• The accidental Higgs
• Exploring BSM Higgs couplings in single top-quark production
• Entangling Higgs production associated with a single top and a top-quark pair in the presence of anomalous top-Yukawa coupling
• Enhancing $t\bar{t}hh$ production through CP-violating top-Higgs interaction at the LHC, ILC and a 100 TeV collider
• Higgs production in association with a single top quark at the LHC