Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron

Abstract

The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of $\sqrt{s}=1.96$ TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is $A_{\mathrm{FB}}^{t\bar{t}}=0.128\pm 0.025$. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.

arXiv commentSubmitted to PRL, 18 pages, 9 figures, includes PRL supplemental material as appendix

References in corpus (24)

• Matching NLO QCD computations and parton shower simulations
• Measurement of the J/Psi Meson and b-Hadron Production Cross Sections in ppbar Collisions at sqrt s = 1960 GeV
• The Upgraded D0 Detector
• Matching NLO QCD and parton showers in heavy flavour production
• Forward-backward asymmetry in top quark-antiquark production
• Non-perturbative QCD Effects and the Top Mass at the Tevatron
• Measurement of the top quark forward-backward production asymmetry and its dependence on event kinematic properties
• Resolving the Tevatron Top Quark Forward-Backward Asymmetry Puzzle: Fully Differential Next-to-Next-to-Leading-Order Calculation
• Top quark and leptonic charge asymmetries for the Tevatron and LHC
• NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron
• Measurement of the forward-backward asymmetry in top quark-antiquark production in ppbar collisions using the lepton+jets channel
• Asymmetries in top quark pair production at hadron colliders
• Review of new physics effects in t-tbar production
• Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF
• The top quark forward-backward asymmetry at approximate N${}^3$LO
• Measurement of the asymmetry in angular distributions of leptons produced in dilepton ttbar final states in ppbar collisions at sqrt(s)=1.96 TeV
• Monte Carlo tuning in the presence of Matching
• Analytic solutions for neutrino momenta in decay of top quarks
• Measurement of the leptonic asymmetry in ttbar events produced in ppbar collisions at sqrt(s)=1.96 TeV
• Measurement of the forward-backward asymmetry in the distribution of leptons in $t\bar{t}$ events in the lepton+jets channel
• Simultaneous measurement of forward-backward asymmetry and top polarization in dilepton final states from $t\bar{t}$ production at the Tevatron
• Interpretations and Implications of the Top Quark Rapidity Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Measurement of the forward-backward asymmetry of top-quark and antiquark pairs using the full CDF Run II data set
• On the Forward-Backward Asymmetry of Leptonic Decays of $t\bar{t}$ at the Fermilab Tevatron

Cited by in corpus (9)

• The Standard Model as an Effective Field Theory
• The top-quark charge asymmetry at the LHC and Tevatron through NNLO QCD and NLO EW
• Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at $\sqrt{s}=$ 13 TeV
• Signals of $W^{\prime }$ and $Z^{\prime }$ bosons at the LHC in the $SU(3)\times SO(5)\times U(1)$ gauge-Higgs unification
• Measurement of the $\mathrm{t}\bar{\mathrm{t}}$ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at $\sqrt{s}$ = 13 TeV
• Confronting $B$ anomalies with low energy parity violation
• Top quark properties at Tevatron
• Single-top production and rare top interactions
• Measurement of the top-quark production cross-section and charge asymmetry at LHCb