Higher order corrections to spin correlations in top quark pair production at the LHC

Abstract

We calculate, for the first time, the next-to-next-to leading order (NNLO) QCD corrections to spin correlations in top quark pair production at the LHC. The NNLO corrections play an important role in the description of the corresponding differential distributions. We observe that the Standard Model calculation describes the available delta-phi data in the fiducial region but does not agree with the delta-phi measurement extrapolated to full phase space. Most likely this discrepancy is due to the difference in precision between existing event generators and NNLO calculations for dilepton top-pair final states.

arXiv comment6 pages, 5 figures

References in corpus (59)

• The anti-k_t jet clustering algorithm
• Parton distributions from high-precision collider data
• New parton distribution functions from a global analysis of quantum chromodynamics
• 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
• A novel subtraction scheme for double-real radiation at NNLO
• GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
• 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.
• Top Production: Sensitivity to New Physics
• 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
• Top-Quark Decay at Next-to-Next-to-Leading Order in QCD
• 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
• On-the-fly reduction of open loops
• Top quark spin correlations at hadron colliders: Predictions at next-to-leading order QCD
• Dynamical scales for multi-TeV top-pair production at the LHC
• NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron
• Measurement of differential cross sections for top quark pair production using the lepton+jets final state in proton-proton collisions at 13 TeV
• Virtual amplitudes and threshold behaviour of hadronic top-quark pair-production cross sections
• Spin Correlation Effects in Top Quark Pair Production at the LHC
• $O({\alpha }_s^2)$ corrections to fully-differential top quark decays
• NNLO QCD Corrections to t-channel Single Top-Quark Production and Decay
• (Light) Stop Signs
• Fermionic Corrections to the Heavy-Quark Pair Production in the Quark-Antiquark Channel
• Two-Loop QCD Corrections to the Heavy-to-Light Quark Decay
• Two-loop QCD correction to differential semi-leptonic b --> u decays in the shape-function region
• NLO electroweak corrections to off-shell top-antitop production with leptonic decays at the LHC
• Measurements of t t-bar spin correlations and top-quark polarization using dilepton final states in pp collisions at sqrt(s) = 7 TeV
• A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions
• A New Twist on Top Quark Spin Correlations
• Measurements of spin correlation in top-antitop quark events from proton-proton collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Measurements of top-quark pair differential cross-sections in the lepton+jets channel in $pp$ collisions at $\sqrt{s}$=13 TeV using the ATLAS detector
• Measurements of t t-bar spin correlations and top quark polarization using dilepton final states in pp collisions at sqrt(s) = 8 TeV
• Transverse Polarization of Top Quark Pairs at the Tevatron and the Large Hadron Collider
• Heavy-to-light decays with a two-loop accuracy
• Next-to-leading order QCD corrections to top quark spin correlations at hadron colliders: the reactions $gg\to t\bar{t}(g)$ and $gq(\bar{q})\to t\bar{t}q(\bar{q})$
• 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
• fastNLO tables for NNLO top-quark pair differential distributions
• Next-to-leading order QCD corrections to top quark spin correlations at hadron colliders: the reactions $q\bar{q}\to t\bar{t}(g)$
• Measurements of top quark spin observables in $t\bar{t}$ events using dilepton final states in $\sqrt{s}=8$ TeV $pp$ collisions with the ATLAS detector
• Renormalization-group improved fully differential cross sections for top pair production
• Determination of the top quark mass from leptonic observables
• Enhancing the ttH signal through top-quark spin polarization effects at the LHC
• Top-quark pair-production and decay at high precision
• Top quark spin correlations at the Tevatron and the LHC
• Polarized double-virtual amplitudes for heavy-quark pair production
• Top-quark physics at the Large Hadron Collider
• Measurement of spin correlation between top and antitop quarks produced in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Production of heavy Higgs bosons and decay into top quarks at the LHC. II: Top-quark polarization and spin correlation effects
• Dilepton azimuthal correlations in $t\bar{t}$ production
• Quantum Chromodynamics and the Precision Phenomenology of Heavy Quarks

Cited by in corpus (48)

• 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
• NNLO QCD corrections to diphoton production with an additional jet at the LHC
• Single-jet inclusive rates with exact color at $\mathcal{O}({\alpha }_s^4)$
• Next-to-next-to-leading order event generation for top-quark pair production
• NNLO QCD corrections to leptonic observables in top-quark pair production and decay
• Measurements of top-quark pair spin correlations in the $e\mu$ channel at $\sqrt{s}=13$ TeV using $pp$ collisions in the ATLAS detector
• Spin correlations in final-state parton showers and jet observables
• Infrared-safe flavoured anti-$k_T$ jets
• Top-pair production at the LHC with MiNNLO${}_{\mathrm{PS}}$
• PineAPPL: combining EW and QCD corrections for fast evaluation of LHC processes
• The emergence of multi-lepton anomalies at the LHC and their compatibility with new physics at the EW scale
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• 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
• Probing the CP structure of the top quark Yukawa coupling: Loop sensitivity vs. on-shell sensitivity
• NNLO QCD study of polarised $W^{+}{W}^{-}$ production at the LHC
• Zero-jettiness resummation for top-quark pair production at the LHC
• Off-shell vs on-shell modelling of top quarks in photon associated production
• Analytic results for deep-inelastic scattering at NNLO QCD with the nested soft-collinear subtraction scheme
• Soft-parton contributions to heavy-quark production at low transverse momentum
• One-loop QCD helicity amplitudes for $pp\to t\bar{t}j$ to $O({\epsilon }^2)$
• Projected transverse momentum resummation in top-antitop pair production at LHC
• Measurements of differential cross-sections in top-quark pair events with a high transverse momentum top quark and limits on beyond the Standard Model contributions to top-quark pair production with the ATLAS detector at $\sqrt{s}=13$ TeV
• A detailed investigation of W+c-jet at the LHC
• Differential $t\bar{t}$ cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb${}^{-1}$ of ATLAS data
• Non-factorisable contribution to $t$-channel single-top production
• $t\bar{t}b\bar{b}$ at the LHC: On the size of off-shell effects and prompt $b$-jet identification
• A study of additional jet activity in top quark pair production and decay at the LHC
• Complete NLO corrections to top-quark pair production with isolated photons
• Master integrals of a planar double-box family for top-quark pair production
• Associated production of a top-quark pair with two isolated photons at the LHC through NLO in QCD
• Spin Correlations in $t\bar{t}$ Production and Decay at the LHC in QCD Perturbation Theory
• Modeling of $t$-channel single top-quark production at the LHC
• Electroweak Loops as a Probe of New Physics in $t\bar{t}$ Production at the LHC
• On two-body and three-body spin correlations in leptonic $t\bar{t}Z$ production and anomalous couplings at the LHC
• Four top final states with NLO accuracy in perturbative QCD: 4 lepton channel
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• The impact of top-quark modelling on the exclusion limits in $\mathbf{t}\bar{\mathbf{t}}+\text{DM}$ searches at the LHC
• Prospects for measuring quark polarization and spin correlations in $b\bar{b}$ and $c\bar{c}$ samples at the LHC
• Robust estimates of theoretical uncertainties at fixed-order in perturbation theory
• The $q_{\mathrm{T}}$ and $\Delta {\varphi }_{t\bar{t}}$ spectra in top-antitop hadroproduction at NNLL+NNLO: the interplay of soft-collinear resummation and Coulomb singularities
• Study of anomalous gauge boson self-couplings and the role of spin-$1$ polarizations
• Probing the spin correlations of $t\bar{t}$ production at NLO QCD+EW
• Top2018: Experimental Summary
• Top quark spin and quantum entanglement in the ATLAS experiment
• Complete NLO corrections to off-shell $\mathbf{t}\bar{\mathbf{t}}$ production in the $\mathbf{\ell }+\mathbf{j}$ decay channel
• Observing $t\bar{t}Z$ spin correlations at the LHC