Probing top-Z dipole moments at the LHC and ILC

Abstract

We investigate the weak electric and magnetic dipole moments of top quark-Z boson interactions at the Large Hadron Collider (LHC) and the International Linear Collider (ILC). Their vanishingly small magnitude in the Standard Model makes these couplings ideal for probing New Physics interactions and for exploring the role of top quarks in electroweak symmetry breaking. In our analysis, we consider the production of two top quarks in association with a Z boson at the LHC, and top quark pairs mediated by neutral gauge bosons at the ILC. These processes yield direct sensitivity to top quark-Z boson interactions and complement indirect constraints from electroweak precision data. Our computation is accurate to next-to-leading order in QCD, we include the full decay chain of top quarks and the Z boson, and account for theoretical uncertainties in our constraints. We find that LHC experiments will soon be able to probe weak dipole moments for the first time.

17 pages, 6 figures

References in corpus (17)

• Parton distributions for the LHC
• General Minimal Flavor Violation
• Collider Signals of Top Quark Flavor Violation from a Warped Extra Dimension
• Next-to-leading order QCD corrections to t-tbar-Z production at the LHC
• Electroweak effects in top-quark pair production at Hadron Colliders
• Weak interaction corrections to hadronic top quark pair production
• Next-to-Leading-Order QCD corrections to J/ψ(Υ)+γproduction at the LHC
• Weak corrections to gluon-induced top-antitop hadro-production
• Pinning down top dipole moments with ultra-boosted tops
• Measurement of top quark-antiquark pair production in association with a W or Z boson in pp collisions at sqrt(s) = 8 TeV
• The Chromoelectric Dipole Moment of the Top Quark in Models with Vector Like Multiplets
• Top-quark forward-backward asymmetry in e+e- annihilation at NNLO in QCD
• Electroweak prodution of top-quark pairs in e+e- annihilation at NNLO in QCD: the vector contributions
• Probing anomalous $t\bar{t}Z$ interactions with rare meson decays
• The real-virtual antenna functions for $S\to Q\bar{Q}X$ at NNLO QCD
• Can LHC observe an anomaly in ttZ production?
• O(alpha) electroweak corrections to the processes e+e- -> tau-tau+, c bar-c, b bar-b, t bar-t: a comparison

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• Single-top associated production with a $Z$ or $H$ boson at the LHC: the SMEFT interpretation
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• Global and optimal probes for the top-quark effective field theory at future lepton colliders
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• Single top production in association with a $WZ$ pair at the LHC in the SMEFT
• New Physics from High Energy Tops
• NLO QCD corrections to full off-shell production of $t\bar{t}Z$ including leptonic decays
• Production of electroweak bosons at hadron colliders: theoretical aspects
• Optimal determination of New Physics couplings: A comparative study
• Top-quark pair production at next-to-next-to-leading order QCD in electron positron collisions
• Boosting New Physics Searches in $t\bar{t}Z$ and $tZj$ Production with Angular Moments
• Complete NLO corrections to top-quark pair production with isolated photons
• Study of top quark dipole interactions in $t\bar{t}$ production associated with two heavy gauge bosons at the LHC
• Limits on the anomalous $Wtq$ couplings
• A precise characterisation of the top quark electro-weak vertices at the ILC
• On two-body and three-body spin correlations in leptonic $t\bar{t}Z$ production and anomalous couplings at the LHC
• Electroweak Loops as a Probe of New Physics in $t\bar{t}$ Production at the LHC
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• Asymmetry Observables for Measuring Spin Correlations in Top-Quark Pair Production
• Sensitivity measuring expected on the electromagnetic anomalous couplings in the $t\bar{t}\gamma$ vertex at the FCC-he
• Combining Pati-Salam and Flavour Symmetries
• Top quark physics in the Large Hadron Collider era
• Signs of new physics in top quark pair production associated with a neutrino pair at the LHC
• Theoretical aspects of the study of top quark properties
• Measurement of the inclusive and differential $\mathrm{t}\overline{\mathrm{t}}\gamma$ cross sections in the single-lepton channel and EFT interpretation at $\sqrt{s}$ = 13 TeV
• Observing $t\bar{t}Z$ spin correlations at the LHC
• Differential measurement of $\mathrm{t}\bar{\mathrm{t}}\mathrm{Z}$ production at $\sqrt{s}=13\mathrm{TeV}$ with the CMS experiment
• Analyzing $t\bar{t}Z$-couplings at the future $e^{-}p$ collider