Measurement of the forward-backward asymmetry in top quark-antiquark production in ppbar collisions using the lepton+jets channel

Abstract

We present a measurement of the forward--backward asymmetry in top quark-antiquark production using the full Tevatron Run II dataset collected by the D0 experiment at Fermilab. The measurement is performed in lepton+jets final states using a new kinematic fitting algorithm for events with four or more jets and a new partial reconstruction algorithm for events with only three jets. Corrected for detector acceptance and resolution effects, the asymmetry is evaluated to be 10.6+-3.0 %. Results are consistent with the standard model predictions which range from 5.0% to 8.8%. We also present the dependence of the asymmetry on the invariant mass of the top quark--antiquark system and the difference in rapidities of top quark and antiquark.

16 pages, 9 figures, 11 tables, to be submitted to PRD

References in corpus (11)

• MCFM for the Tevatron and the LHC
• NLO QCD corrections to t tbar + jet production at hadron colliders
• First measurement of the forward-backward charge asymmetry in top quark pair production
• Threshold Resummation for the Top Quark Charge Asymmetry
• Design and Implementation of the New D0 Level-1 Calorimeter Trigger
• Application of the Principle of Maximum Conformality to the Top-Quark Forward-Backward Asymmetry at the Tevatron
• Measurement of the top quark pair production cross section in the lepton+jets channel in proton-antiproton collisions at $\sqrt{s}$=1.96 TeV
• The top quark rapidity distribution and forward-backward asymmetry
• QCD Coherence and the Top Quark Asymmetry
• Puzzles in Hadronic Physics and Novel Quantum Chromodynamics Phenomenology
• Measurement of the forward-backward asymmetry in the distribution of leptons in $t\bar{t}$ events in the lepton+jets channel

Cited by in corpus (13)

• Top-quark charge asymmetry and polarization in $t\bar{t}{W}^{\pm }$ production at the LHC
• Asymmetries in top quark pair production at hadron colliders
• The top quark forward-backward asymmetry at approximate N${}^3$LO
• Measurement of the charge asymmetry in dileptonic decays of top quark pairs in $pp$ collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Application of the Principle of Maximum Conformality to the Top-Quark Charge Asymmetry at the LHC
• Renormalization group-induced phenomena of top pairs from four-quark effective operators
• Stealth QCD-like Strong Interactions and the t-tbar Asymmetry
• Measurement of the Forward-Backward Asymmetry in the Production of $B^{\pm }$ Mesons in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV
• Quantum coherence, top transverse polarisation and the Tevatron asymmetry $A_{FB}^{\ell }$
• Top-quark Polarization and Asymmetries at the LHC in the Effective Description of Squark Interactions
• CDF Results on Heavy Quarks
• Top quark properties
• Top quark properties at the Tevatron