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Top quark pair production and decay at hadron colliders

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arxiv hep-ph/0403035 v1 pith:HICOQ3OQ submitted 2004-03-03 hep-ph

classification hep-ph
keywords resultsquarkanalyticdecaydifferentialhadronjetsnext-to-leading
verification ladder T0 review T1 audit T2 compute T3 formal

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In ongoing and upcoming hadron collider experiments, top quark physics will play an important role in testing the Standard Model and its possible extensions. In this work we present analytic results for the differential cross sections of top quark pair production in hadronic collisions at next-to-leading order in the QCD coupling, keeping the full dependence on the spins of the top quarks. These results are combined with the corresponding next-to-leading order results for the decay of polarized top quarks into dilepton, lepton plus jets, and all jets final states. As an application we predict double differential angular distributions which are due to the QCD-induced top quark spin correlations in the intermediate state. In addition to the analytic results, we give numerical results in terms of fit functions that can easily be used in an experimental analysis.

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Forward citations

Cited by 8 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Towards NNLO QCD predictions for off-shell top-quark pair production and decays

    hep-ph 2025-07 conditional novelty 8.0 of 10

    The first NNLO QCD prediction for off-shell W+W-bbbar production with massive bottom quarks at the LHC, using a double-pole approximation for the two-loop virtual and an on-shell matching for non-factorisable corrections.

  2. Experimental characterization of the hierarchy of quantum correlations in top quark pairs

    quant-ph 2026-02 conditional novelty 6.0 of 10

    LHC top-quark data show quantum discord at >5σ, first evidence for steering at >3σ, no Bell correlations, and nonzero magic.

  3. New physics in toponium's shadow?

    hep-ph 2025-12 conditional novelty 6.0 of 10

    Consistently including toponium bound-state effects inside the new-physics amplitude, not just the Standard Model one, reshapes the allowed mass–coupling region for a top-philic pseudoscalar near the top-antitop threshold.

  4. Quantum Entanglement Autodistillation in Baryon Pair Decays

    hep-ph 2025-04 conditional novelty 6.0 of 10

    Weak decays of spin-1/2 baryon-antibaryon pairs into a spin-1/2 baryon and a spin-0 meson can probabilistically increase the pair's spin entanglement, with the effect controlled by the decay asymmetry parameter alphaD.

  5. Probing the $CP$ nature of the top quark Yukawa at hadron colliders

    hep-ph 2019-08 conditional novelty 6.0 of 10

    A new charge-blind CP-odd observable in top-antitop-Higgs production could let the HL-LHC probe the CP-violating top Yukawa down to about 0.5 and a 27 TeV HE-LHC down to about 0.1 at 2σ.

  6. Search for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at $\sqrt{s} =$ 13 TeV

    hep-ex 2019-08 accept novelty 6.0 of 10

    CMS sets new 95% CL upper limits on the top-quark coupling of scalar and pseudoscalar Higgs bosons with masses from 400 to 750 GeV, and reports a 1.9 sigma excess near 400 GeV.

  7. Quantum spin correlations in $Z^\prime$-mediated $t\bar{t}$ production at future lepton colliders

    hep-ph 2026-07 conditional novelty 5.0 of 10

    Quantum spin observables of t-bar-t pairs at future lepton colliders can distinguish chiral U(1)_X Z′ charge assignments, and polarized e−e+ beams isolate left- vs right-handed lepton couplings.

  8. Top-quark spin correlations as a tool to distinguish pseudoscalar $A \to ZH$ and scalar $H \to ZA$ signatures in $Z t \bar t$ final states at the LHC

    hep-ph 2025-02 conditional novelty 5.0 of 10

    Angular variables built from lepton directions in fully leptonic ttbar decays can distinguish A to Z H from H to Z A cascades in Z ttbar final states at the HL-LHC, reaching 6.4 to 6.5 sigma for 600/800 GeV 2HDM benchmarks.

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