Probing Electroweak Top Quark Couplings at Hadron Colliders

Abstract

We consider QCD t\bar{t}γand t\bar{t}Z production at hadron colliders as a tool to measure the ttγand ttZ couplings. At the Tevatron it may be possible to perform a first, albeit not very precise, test of the ttγvector and axial vector couplings in t\bar{t}γproduction, provided that more than 5 fb^{-1} of integrated luminosity are accumulated. The t\bar{t}Z cross section at the Tevatron is too small to be observable. At the CERN Large Hadron Collider (LHC) it will be possible to probe the ttγcouplings at the few percent level, which approaches the precision which one hopes to achieve with a next-generation e^+e^- linear collider. The LHC's capability of associated QCD t\bar{t}V (V=γ, Z) production has the added advantage that the ttγand ttZ couplings are not entangled. For an integrated luminosity of 300 fb^{-1}, the ttZ vector (axial vector) coupling can be determined with an uncertainty of 45-85% (15-20%), whereas the dimension-five dipole form factors can be measured with a precision of 50-55%. The achievable limits improve typically by a factor of 2-3 for the luminosity-upgraded (3 ab^{-1}) LHC.

Revtex3, 30 pages, 9 Figures, 6 Tables

References in corpus (52)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• MadEvent: Automatic Event Generation with MadGraph
• Physics potential and experimental challenges of the LHC luminosity upgrade
• A Precision Measurement of the Mass of the Top Quark
• Measurement of the ttbar Production Cross Section in ppbar Collisions at sqrt{s}=1.96 TeV using Lepton + Jets Events with Secondary Vertex b-tagging
• A Heavy Top Quark and the $Zb\bar{b}$ Vertex in Non-Commuting Extended Technicolor
• Single top quarks at the Fermilab Tevatron
• Review of Top Quark Physics
• V-a Tests Through Leptons from Polarised Top Quarks
• Non-Oblique Effects in the Z b b_bar Vertex from ETC Dynamics
• Electroweak Precision Tests: A Concise Review
• Analysis of tbW and ttZ couplings from CLEO and LEP/SLC data
• Top Dipole Form Factors and Loop-induced CP-violation in Supersymmetry
• Measuring the top-quark Yukawa coupling at hadron colliders via tth, h->WW
• Linear Collider Physics Resource Book for Snowmass 2001 - Part 3: Studies of Exotic and Standard Model Physics
• Direct Measurement of the Top Quark Charge at Hadron Colliders
• Higgs Boson Discovery Potential of LHC in the Channel $pp\to \gamma \gamma +jet$
• Precise determination of the Wtb couplings at LHC
• Probing the Top-Quark Electric Dipole Moment at a Photon Linear Collider
• Optimal-Observable Analysis of the Angular and Energy Distributions for Top-Quark Decay Products at Polarized Linear Colliders
• Using $b\to s\gamma$ to Probe Top Quark Couplings
• Measurement of $W\gamma$ and $Z\gamma$ Production in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV
• Probe of the Wtb coupling in $t\bar{t}$ pair production at Linear Colliders
• First Measurement of the Ratio B(t-->Wb)/B(t-->Wq) and Associated Limit on the CKM Element Vtb
• The Rare Top Decays $t\to b{W}^{+}Z$ and $t\to c{W}^{+}{W}^{-}$
• The t->WZb decay in the Standard Model: A Critical Reanalysis
• Dipole Form Factors and Loop-induced CP-violation in Supersymmetry
• CP Violation, Top Quarks and the Tevatron Upgrade
• Finite Width Effects in Top Quark Decays
• A Probe of New Physics in Top Quark Pair Production at $e^{-}{e}^{+}$ Colliders
• Weak magnetic dipole moments in two-Higgs-doublet models
• CP Violation in the Top-Quark Pair Production at a Next Linear Collider
• General Tests for t ---> W+ b couplings at Hadron Colliders
• Test of Analysis Method for Top-Antitop Production and Decay Events
• Electric dipole moment of top quark and CP-violating asymmetries in gamma gamma -> t tbar
• Probing Top-Quark Couplings at Polarized NLC
• Extended technicolor contribution to the Zbb vertex
• Complete Calculations of Wb\bar b and Wb\bar b + jet Production at Tevatron and LHC: Probing Anomalous Wtb Couplings in Single Top Production
• Dominant Three-Body Decays of a Heavy Higgs and Top Quark
• Probing Anomalous Wtb Coupling via Single Top Production at TeV Energy $\gamma$ e Colliders
• Unitarity Constraints on Anomalous Top Quark Couplings to Weak Gauge Bosons
• CP-violating Z-gamma-gamma and top-quark electric dipole couplings in gamma gamma -> t bar{t}
• Top-quark spin correlation at Linear Colliders with anomalous couplings
• Probing anomalous top quark couplings at eγcolliders
• Non-commuting ETC corrections to zt\bar{t} vertex
• Limits on Anomalous Top Couplings from Z Pole Physics
• Importance of Tests for the Complete Lorentz Structure of the t --> W+ b vertex at Hadron Colliders
• Top Quark Physics at a Future $e^{+}{e}^{-}$ Collider: Experimental Aspects

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• Measurements of inclusive and differential cross-sections of combined $t\bar{t}\gamma$ and $tW\gamma$ production in the $e\mu$ channel at 13 TeV with the ATLAS detector
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• Top quark precision physics at the International Linear Collider
• A precise characterisation of the top quark electro-weak vertices at the ILC
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• One-loop QCD and electroweak corrections to $t\bar{t}{Z}^0$ production at an $e^{+}{e}^{-}$ linear collider
• On two-body and three-body spin correlations in leptonic $t\bar{t}Z$ production and anomalous couplings at the LHC
• Top Couplings: pre-Snowmass Energy Frontier 2013 Overview
• Climbing to the Top of the ATLAS 13 TeV data
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• Determining Top Quark Couplings at the LHC: Snowmass White Paper
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• Inclusive and differential measurements of the $\mathrm{t}\bar{\mathrm{t}}\gamma$ cross section and the $\mathrm{t}\bar{\mathrm{t}}\gamma$ / $\mathrm{t}\bar{\mathrm{t}}$ cross section ratio in proton-proton collisions at $\sqrt{s}$ = 13 TeV
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