Weak Interactions in Top-Quark Pair Production at Hadron Colliders: An Update

Abstract

Weak corrections for top-quark pair production at hadron colliders are revisited. Predictions for collider energies of 8 TeV, adopted to the recent LHC run, and for 13 as well as 14 TeV, presumably relevant for the next round of LHC experiments, are presented. Kinematic regions with large momentum transfer are identified, where the corrections become large and may lead to strong distortions of differential distributions, thus mimicking anomalous top quark couplings. As a complementary case we investigate the threshold region, corresponding to configurations with small relative velocity between top and antitop quark, which is particularly sensitive to the top-quark Yukawa coupling. We demonstrate, that nontrivial upper limits on this coupling, complementary to those recently derived by the CMS and the ATLAS collaorations, are well within reach of ongoing experiments. In addition we suggest a prescription that allows the implementation of these corrections in current Monte Carlo generators. Furthermore, the weak corrections have been included in the publicly available Hathor library. The numerical results presented in this article use the same setup as the recently calculated NNLO QCD corrections. The results can thus be combined to give the most precise theoretical predictions.

Updated version with extended discussion on the top-quark Yukawa coupling, input parameters updated to recent values

References in corpus (50)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Parton distributions for the LHC
• The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• Percent level precision physics at the Tevatron: first genuine NNLO QCD corrections to q qbar -> t tbar + X
• Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation
• NNLO corrections to top-pair production at hadron colliders: the all-fermionic scattering channels
• NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction
• Theoretical status and prospects for top-quark pair production at hadron colliders
• Inadequacy of zero-width approximation for a light Higgs boson signal
• Forward-backward asymmetry in top quark-antiquark production
• Charge asymmetry of heavy quarks at hadron colliders
• Constraining the Higgs boson width with ZZ production at the LHC
• Charge asymmetry in hadroproduction of heavy quarks
• Charge asymmetries of top quarks at hadron colliders revisited
• The theoretical top quark cross section at the Tevatron and the LHC
• Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
• Measurement of the top quark forward-backward production asymmetry and its dependence on event kinematic properties
• Measurement of differential top-quark pair production cross sections in pp collisions at sqrt(s) = 7 TeV
• The electroweak contribution to the top quark forward-backward asymmetry at the Tevatron
• Top quark and leptonic charge asymmetries for the Tevatron and LHC
• Combination of the top-quark mass measurements from the Tevatron collider
• Threshold Resummation for the Top Quark Charge Asymmetry
• Summing up Subleading Sudakov Logarithms
• Electroweak effects in top-quark pair production at Hadron Colliders
• Weak interaction corrections to hadronic top quark pair production
• Top-quark pair production near threshold at LHC
• Precision predictions for the t+t(bar) production cross section at hadron colliders
• Electroweak corrections to top-quark pair production in quark--antiquark annihilation
• Next-to-Next-to-Leading Logarithms in Four-Fermion Electroweak Processes at High Energy
• Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at sqrt(s) = 7 TeV
• The top-pair forward-backward asymmetry beyond NLO
• Mixed QCD and weak corrections to top quark pair production at hadron colliders
• Measurement of the t t-bar production cross section in pp collisions at sqrt(s) = 7 TeV with lepton + jets final states
• Weak corrections to gluon-induced top-antitop hadro-production
• NLO QED contributions to top-pair production at hadron collider
• Inclusive top-pair production phenomenology with TOPIXS
• Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s) = 8 TeV
• Measurement of the top quark pair cross section with ATLAS in pp collisions at sqrt(s) = 7 TeV using final states with an electron or a muon and a hadronically decaying tau lepton
• A search for ttbar resonances in the lepton plus jets final state with ATLAS using 4.7 fb^-1 of pp collisions at sqrt(s) = 7 TeV
• Measurement of Leptonic Asymmetries and Top Quark Polarization in ttbar Production
• On top-pair hadro-production at next-to-next-to-leading order
• Search for Z' resonances decaying to ttbar in dilepton+jets final states in pp collisions at sqrt(s) = 7 TeV
• Measurement of the ttbar production cross section in the tau+jets channel using the ATLAS detector
• Search for resonant t t-bar production in lepton+jets events in pp collisions at sqrt(s) = 7 TeV
• Top-quark production and QCD
• Measurement of the top-antitop production cross section in the tau+jets channel in pp collisions at sqrt(s) = 7 TeV
• Measurement of the ttbar production cross section in pp collisions at sqrt(s) = 8 TeV in dilepton final states containing one tau lepton
• Measurement of the t t-bar production cross section in the all-jet final state in pp collisions at sqrt(s) = 7 TeV

Cited by in corpus (49)

• New parton distribution functions from a global analysis of quantum chromodynamics
• Resolving the Tevatron Top Quark Forward-Backward Asymmetry Puzzle: Fully Differential Next-to-Next-to-Leading-Order Calculation
• Measurements of top-quark pair differential cross-sections in the lepton+jets channel in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector
• An NLO+PS generator for $t\bar{t}$ and $Wt$ production and decay including non-resonant and interference effects
• A search for $t\bar{t}$ resonances using lepton-plus-jets events in proton-proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Top-quark pair production at the LHC: Fully differential QCD predictions at NNLO
• Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurement of $\mathrm{t}\bar{\mathrm{t}}$ normalised multi-differential cross sections in pp collisions at $\sqrt{s}=13$ TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions
• Search for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• NLO QCD corrections to W+ W- b anti-b production with leptonic decays in the light of top quark mass and asymmetry measurements
• Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum in $\sqrt{s}$ = 8 TeV proton-proton collisions using the ATLAS detector
• Multi-jet merged top-pair production including electroweak corrections
• Probing top-Z dipole moments at the LHC and ILC
• Pinning down electroweak dipole operators of the top quark
• Zero and one jet combined NLO analysis of the top quark forward-backward asymmetry
• The impact of the photon PDF and electroweak corrections on $t\bar{t}$ distributions
• Search for heavy particles decaying into a top-quark pair in the fully hadronic final state in $pp$ collisions at $\sqrt{s}=13$ TeV with 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
• Resummation for (boosted) top-quark pair production at NNLO+NNLL' in QCD
• Production of heavy Higgs bosons and decay into top quarks at the LHC
• 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
• Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Study of weak corrections to Drell-Yan, top-quark pair and dijet Production at high energies with MCFM
• Top quark pair production near threshold: single/double distributions and mass determination
• Probing the CP structure of the top quark Yukawa coupling: Loop sensitivity vs. on-shell sensitivity
• Observation of a pseudoscalar excess at the top quark pair production threshold
• Measurement of the charge asymmetry in highly boosted top-quark pair production in $\sqrt{s}=$ 8 TeV $pp$ collision data collected by the ATLAS experiment
• Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Production of semi-inclusive doubly heavy baryons via top-quark decays
• Projected transverse momentum resummation in top-antitop pair production at LHC
• Top-quark pair production at high invariant mass: an NNLO soft plus virtual approximation
• Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the lepton+jets final state in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Four-top as probe of light top-philic New Physics
• Top-quark pair production at complete-NLO accuracy with NNLO+NNLL${}^{\prime }$ corrections in QCD
• Top-quark pair production as a probe of light top-philic scalars and anomalous Higgs interactions
• The next-to-next-to-leading order soft function for top quark pair production
• Search for heavy pseudoscalar and scalar bosons decaying to a top quark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Electroweak Loops as a Probe of New Physics in $t\bar{t}$ Production at the LHC
• Four top final states with NLO accuracy in perturbative QCD: 4 lepton channel
• Excited doubly heavy baryons production via top-quark decays
• Kinematics of Top Quark Final States: A Snowmass White Paper
• About the EW contribution to the relation between pole and MS-masses of the top-quark in the Standard Model
• 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
• State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections
• Measurement of the top-quark Yukawa coupling from $t\overline{t}$ production in the lepton+jets final state using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Hadroproduction of four top quarks in the POWHEG BOX
• Search for single production of vector-like quarks decaying into $W(\ell \nu )b$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Interpretation of LHC excesses in ditop and ditau channels as a 400-GeV pseudoscalar resonance
• EW corrections to $t\bar{t}$ distributions: the photon PDF effect