NNLO QCD corrections to leptonic observables in top-quark pair production and decay

Abstract

We calculate a comprehensive set of spin correlations and differential distributions in top-quark pair production and decay to dilepton final states. This is the first time such a complete study is performed at next-to-next-to leading order in QCD. Both inclusive and fiducial distributions are presented and analyzed. Good agreement between NNLO QCD predictions and data is found. We demonstrate that it is possible to perform high-precision comparisons of fixed-order calculations with fiducial-level data. Subtleties of the top quark definition are raised and clarified. Some of those are found to have a very significant impact on top-quark pair production at absolute threshold.

arXiv comment49 pages, 94 figures, published version, minor changes in the figures and text

References in corpus (67)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• LHAPDF6: parton density access in the LHC precision era
• Parton distributions from high-precision collider data
• Scattering Amplitudes with Open Loops
• The Dipole Formalism for Next-to-Leading Order QCD Calculations with Massive Partons
• The Dipole Formalism for the Calculation of QCD Jet Cross Sections at Next-to-Leading Order
• OpenLoops 2
• Electroweak corrections to charged-current e+e- --> 4 fermion processes - technical details and further results
• Predictions for all processes e^+e^- -> 4 fermions + gamma
• A novel subtraction scheme for double-real radiation at NNLO
• Reduction of one-loop tensor 5-point integrals
• High-precision differential predictions for top-quark pairs at the LHC
• Top quark pair production and decay at hadron colliders
• Single top production and decay at next-to-leading order
• Distributions and correlations for top quark pair production and decay at the Tevatron and LHC.
• Angular Correlations in Top Quark Pair Production and Decay at Hadron Colliders
• Double-real radiation in hadronic top quark pair production as a proof of a certain concept
• Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order
• NLO QCD corrections to WWbb production at hadron colliders
• Top-pair production at the LHC through NNLO QCD and NLO EW
• Infrared safe definition of jet flavour
• Four-dimensional formulation of the sector-improved residue subtraction scheme
• Resolving the Tevatron Top Quark Forward-Backward Asymmetry Puzzle: Fully Differential Next-to-Next-to-Leading-Order Calculation
• NLO QCD corrections to top quark pair production and decay at hadron colliders
• NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders
• An NLO+PS generator for $t\bar{t}$ and $Wt$ production and decay including non-resonant and interference effects
• QCD-corrected spin analysing power of jets in decays of polarized top quarks
• Dynamical scales for multi-TeV top-pair production at the LHC
• Tracing CP violation in the production of top quark pairs by multiple TeV proton-proton collisions
• NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron
• Spin Correlation Effects in Top Quark Pair Production at the LHC
• $O({\alpha }_s^2)$ corrections to fully-differential top quark decays
• Narrow-width approximation accuracy
• NNLO QCD corrections to three-photon production at the LHC
• Measurement of the top quark polarization and $\mathrm{t}\bar{\mathrm{t}}$ spin correlations using dilepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Top quark pair production in association with a jet: QCD corrections and jet radiation in top quark decays
• Two-Loop QCD Corrections to the Heavy-to-Light Quark Decay
• Fermionic Corrections to the Heavy-Quark Pair Production in the Quark-Antiquark Channel
• Two-loop QCD correction to differential semi-leptonic b --> u decays in the shape-function region
• Single-jet inclusive rates with exact color at $\mathcal{O}({\alpha }_s^4)$
• Higher order corrections to spin correlations in top quark pair production at the LHC
• Bottom-quark production at hadron colliders: fully differential predictions in NNLO QCD
• The top induced backgrounds to Higgs production in the WW -> llvv decay channel at NLO in QCD
• Measurements of $\mathrm{t}\overline{\mathrm{t}}$ differential cross sections in proton-proton collisions at $\sqrt{s}=$ 13 TeV using events containing two leptons
• Measurements of top-quark pair spin correlations in the $e\mu$ channel at $\sqrt{s}=13$ TeV using $pp$ collisions in the ATLAS detector
• A unified NLO description of top-pair and associated Wt production
• Specialized minimal PDFs for optimized LHC calculations
• Single-top-quark production in the $t$-channel at NNLO
• The top-quark charge asymmetry at the LHC and Tevatron through NNLO QCD and NLO EW
• Differential Distributions for t-channel Single Top-Quark Production and Decay at Next-to-Next-to-Leading Order in QCD
• NNLO corrections to B --> X_u l nu in the shape-function region
• Top-quark pair hadroproduction at NNLO: differential predictions with the MSbar mass
• Measurement of lepton differential distributions and the top quark mass in $t\bar{t}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• fastNLO tables for NNLO top-quark pair differential distributions
• Top quark pair production near threshold: single/double distributions and mass determination
• Determination of the top quark mass from leptonic observables
• PARNI for importance sampling and density estimation
• Top quark physics at the LHC
• Top-quark pair-production and decay at high precision
• Off-shell vs on-shell modelling of top quarks in photon associated production
• NLO and off-shell effects in top quark mass determinations
• Top-quark processes at NLO in production and decay
• Polarized double-virtual amplitudes for heavy-quark pair production
• Precise predictions for $t\bar{t}\gamma /t\bar{t}$ cross section ratios at the LHC
• Top-quark pair production at complete-NLO accuracy with NNLO+NNLL${}^{\prime }$ corrections in QCD
• Bump-hunting in LHC ttbar events

Cited by in corpus (25)

• Constraining new physics in entangled two-qubit systems: top-quark, tau-lepton and photon pairs
• Event Generators for High-Energy Physics Experiments
• Quantum entanglement and top spin correlations in SMEFT at higher orders
• Infrared-safe flavoured anti-$k_T$ jets
• Two-loop leading-color helicity amplitudes for three-photon production at the LHC
• Top-quark pair production in association with a $W^{\pm }$ gauge boson in the POWHEG-BOX
• NNLO QCD predictions for W+c-jet production at the LHC
• B-hadron hadro-production in NNLO QCD: application to LHC $t\bar{t}$ events with leptonic decays
• NNLO QCD study of polarised $W^{+}{W}^{-}$ production at the LHC
• Zero-jettiness resummation for top-quark pair production at the LHC
• Production and decay of the Higgs boson in association with top quarks
• Projected transverse momentum resummation in top-antitop pair production at LHC
• Polarised W+j production at the LHC: a study at NNLO QCD accuracy
• A detailed investigation of W+c-jet at the LHC
• Non-factorisable contribution to $t$-channel single-top production
• A study of additional jet activity in top quark pair production and decay at the LHC
• Computational challenges for multi-loop collider phenomenology
• $t\bar{t}b\bar{b}$ at the LHC: On the size of off-shell effects and prompt $b$-jet identification
• Non-local slicing approaches for NNLO QCD in MCFM
• $\mathcal{C}\mathcal{P}$ structure of the top-quark Yukawa interaction: NLO QCD corrections and off-shell effects
• QCD improved top-quark decay at next-to-next-to-leading order
• On two-body and three-body spin correlations in leptonic $t\bar{t}Z$ production and anomalous couplings at the LHC
• The impact of top-quark modelling on the exclusion limits in $\mathbf{t}\bar{\mathbf{t}}+\text{DM}$ searches at the LHC
• A template method to measure the $t\bar{t}$ polarisation
• Probing the spin correlations of $t\bar{t}$ production at NLO QCD+EW