Forward-backward asymmetry in top quark-antiquark production

Abstract

We present a measurement of forward-backward asymmetry in top quark-antiquark production in proton-antiproton collisions in the final state containing a lepton and at least four jets. Using a dataset corresponding to an integrated luminosity of $5.4{\mathrm{fb}}^{-1}$, collected by the \DZ\ experiment at the Fermilab Tevatron Collider, we measure the \ttbar\ forward-backward asymmetry to be $(9.2\pm 3.7)$% at the reconstruction level. When corrected for detector acceptance and resolution, the asymmetry is found to be $(19.6\pm 6.5)$%. We also measure a corrected asymmetry based on the lepton from a top quark decay, found to be $(15.2\pm 4.0)$%. The results are compared to predictions based on the next-to-leading-order QCD generator {\sc mc@nlo}. The sensitivity of the measured and predicted asymmetries to the modeling of gluon radiation is discussed.

References in corpus (12)

• Measurement of the inclusive jet cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$
• NLO QCD corrections to t tbar + jet production at hadron colliders
• First measurement of the forward-backward charge asymmetry in top quark pair production
• The electroweak contribution to the top quark forward-backward asymmetry at the Tevatron
• Design and Implementation of the New D0 Level-1 Calorimeter Trigger
• Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs
• The top-pair forward-backward asymmetry beyond NLO
• On Models of New Physics for the Tevatron Top A_FB
• A Polarized View of the Top Asymmetry
• 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
• Measurement of the W boson helicity in top quark decays using 5.4 fb^-1 of ppbar collision data

Cited by in corpus (189)

• Percent level precision physics at the Tevatron: first genuine NNLO QCD corrections to q qbar -> t tbar + X
• Implications of LHCb measurements and future prospects
• Charge asymmetries of top quarks at hadron colliders revisited
• 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
• Hadronic top-quark pair-production with one jet and parton showering
• NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders
• Eliminating the Renormalization Scale Ambiguity for Top-Pair Production Using the Principle of Maximum Conformality
• The Renormalization Scale-Setting Problem in QCD
• Measurement of ttbar production with a veto on additional central jet activity in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Setting the Renormalization Scale in QCD: The Principle of Maximum Conformality
• Transverse-momentum resummation for heavy-quark hadroproduction
• Search for anomalous t t-bar production in the highly-boosted all-hadronic final state
• Combination of measurements of the top-quark pair production cross section from the Tevatron Collider
• Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at sqrt(s) = 7 TeV
• Transverse-momentum resummation for top-quark pairs at hadron colliders
• Measurement of the charge asymmetry in top-quark pair production in proton-proton collisions at sqrt(s) = 7 TeV
• Inclusive and differential measurements of the t t-bar charge asymmetry in proton-proton collisions at sqrt(s) = 7 TeV
• Weak Interactions in Top-Quark Pair Production at Hadron Colliders: An Update
• Measurement of the forward-backward asymmetry in top quark-antiquark production in ppbar collisions using the lepton+jets channel
• Top quark pair production at small transverse momentum in hadronic collisions
• Top quark pair production in association with a jet: QCD corrections and jet radiation in top quark decays
• Top-quark charge asymmetry and polarization in $t\bar{t}{W}^{\pm }$ production at the LHC
• The Matrix Element Method at Next-to-Leading Order
• NLO QCD corrections to W+ W- b anti-b production with leptonic decays in the light of top quark mass and asymmetry measurements
• Application of the Principle of Maximum Conformality to the Top-Quark Forward-Backward Asymmetry at the Tevatron
• Heavy and light scalar leptoquarks in proton decay
• Modified Higgs Physics from Composite Light Flavors
• Asymmetries in t tbar production: LHC versus Tevatron
• Measurement of the top quark pair production charge asymmetry in proton-proton collisions at 7 TeV using the ATLAS detector
• Probing the SM with Dijets at the LHC
• Zero and one jet combined NLO analysis of the top quark forward-backward asymmetry
• Asymmetries in top quark pair production at hadron colliders
• Shaping the top asymmetry
• Anticipating Non-Resonant New Physics in Dilepton Angular Spectra at the LHC
• On weak interactions as short-distance manifestations of gravity
• Discerning New Physics in Top-Antitop Production using Top Spin Observables at Hadron Colliders
• Top-flavored dark matter and the forward-backward asymmetry
• Measurement of Leptonic Asymmetries and Top Quark Polarization in ttbar Production
• Inclusive and differential measurements of the t t-bar charge asymmetry in pp collisions at sqrt(s) = 8 TeV
• Flavored Dark Matter: A Review
• Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in $pp$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Top Quark Physics at the LHC: A Review of the First Two Years
• Boosting the t tbar charge asymmetry
• Search for resonant t t-bar production in lepton+jets events in pp collisions at sqrt(s) = 7 TeV
• The top quark forward-backward asymmetry at approximate N${}^3$LO
• Flavor Symmetric Sectors and Collider Physics
• Soft-gluon resummation for boosted top-quark production at hadron colliders
• Measurement of the asymmetry in angular distributions of leptons produced in dilepton ttbar final states in ppbar collisions at sqrt(s)=1.96 TeV
• Measurement of the charge asymmetry in dileptonic decays of top quark pairs in $pp$ collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 8 TeV using a template method
• Measurement of the leptonic asymmetry in ttbar events produced in ppbar collisions at sqrt(s)=1.96 TeV
• Measurement of differential $t\bar{t}$ production cross sections in $p\bar{p}$ collisions
• Production of Massive Color-Octet Vector Bosons at Next-to-Leading Order
• Extra Spin Asymmetries From the Breakdown of TMD-Factorization in Hadron-Hadron Collisions
• Flipping t tbar asymmetries at the Tevatron and the LHC
• Testing new physics models by top charge asymmetry and polarization at the LHC
• Probing chromomagnetic and chromoelectric couplings of the top quark using its polarization in pair production at hadron colliders
• Top forward-backward asymmetry and the CDF Wjj excess in leptophobic U(1)' flavor models
• Confronting Top AFB with Parity Violation Constraints
• NLO QCD Predictions for off-shell $t\bar{t}$ and $t\bar{t}H$ Production and Decay at a Linear Collider
• Measurements of t t-bar charge asymmetry using dilepton final states in pp collisions at sqrt(s) = 8 TeV
• The Top Quark Production Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Collider-independent t tbar forward-backward asymmetries
• A Flavorful Top-Coloron Model
• Tevatron Top $A_{FB}$ Versus LHC Top Physics
• Four tops and the t tbar forward-backward asymmetry
• Measurement of the forward-backward asymmetry in the distribution of leptons in $t\bar{t}$ events in the lepton+jets channel
• Leptonic Monotops at LHC
• Light axigluon explanation of the Tevatron ttbar asymmetry and multijet signals at the LHC
• 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
• Data driving the top quark forward--backward asymmetry with a lepton-based handle
• Search for resonant top plus jet production in ttbar + jets events with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
• Application of the Principle of Maximum Conformality to the Top-Quark Charge Asymmetry at the LHC
• Very Light Axigluons and the Top Asymmetry
• Implications of the effective axial-vector coupling of gluon on top-quark charge asymmetry at the LHC
• A charged Z' to conciliate the apparent disagreement between top-antitop Tevatron forward-backward asymmetry and LHC charge asymmetry
• Top-Quark Charge Asymmetry Goes Forward: Two New Observables for Hadron Colliders
• Identifying the colour of TeV-scale resonances
• Top A_FB at the Tevatron vs. charge asymmetry at the LHC in chiral U(1) flavor models with flavored Higgs doublets
• Transverse Top Quark Polarization and the ttbar Forward-Backward Asymmetry
• Search for charge-asymmetric production of W' bosons in top pair + jet events from pp collisions at sqrt(s) = 7 TeV
• Electroweak top-quark pair production at the LHC with $Z^{\prime }$ bosons to NLO QCD in POWHEG
• Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron
• Search for anomalous production of prompt like-sign lepton pairs at sqrt(s) = 7 TeV with the ATLAS detector
• Spinning the Top
• First measurement of the charge asymmetry in beauty-quark pair production at a hadron collider
• Top physics at the LHC
• Forward Tevatron Tops and Backward LHC Tops with Associates
• Top-quark processes at NLO in production and decay
• Diagnosing the top-quark angular asymmetry using LHC intrinsic charge asymmetries
• Top quark forward-backward asymmetry and charge asymmetry in left-right twin Higgs model
• Bottom-Quark Forward-Backward Asymmetry in the Standard Model and Beyond
• The Top Quark
• Massive Spin-2 States as the Origin of the Top Quark Forward-Backward Asymmetry
• Determining the helicity structure of third generation resonances
• Collider-independent top quark forward-backward asymmetries: standard model predictions
• Effect of spin-3/2 top quark excitation on ttbar production at the LHC
• Z' signals in polarised top-antitop final states
• Bottom-Quark Forward-Backward and Charge Asymmetries at Hadron Colliders
• Distinguishing Color-Octet and Color-Singlet Resonances at the Large Hadron Collider
• Search for a heavy particle decaying to a top quark and a light quark in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks
• Top quark forward-backward asymmetry and W^prime bosons
• Same-sign Tops: A Powerful Diagnostic Test for Models of New Physics
• Predictions for the Top-Quark Forward-Backward Asymmetry at High Invariant Pair Mass Using the Principle of Maximum Conformality
• Top Quark Physics at the Tevatron
• Tracking Down the Top Quark Forward-Backward Asymmetry with Monotops
• Interpretations and Implications of the Top Quark Rapidity Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Measurement of the Forward-Backward Asymmetry in the Production of $B^{\pm }$ Mesons in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV
• Ultraviolet Completions of Axigluon Models and Their Phenomenological Consequences
• New physics contributions to the forward-backward asymmetry at the Tevatron
• Top quark precision physics at the International Linear Collider
• Top Quark Forward-Backward Asymmetry and Anomalous Right-Handed Charge Currents
• Quantum coherence, top transverse polarisation and the Tevatron asymmetry $A_{FB}^{\ell }$
• Explaining the ttbar Forward-Backward Asymmetry from a GUT-Inspired Model
• Dijet resonances, widths and all that
• Status of the Fourth Generation - A Brief Summary of B3SM-III Workshop in Four Parts
• Top-Quark Charge Asymmetry with a Jet Handle
• Signatures of top flavour-changing dark matter
• Top quark physics in the Vector Color-Octet Model
• Some recent theoretical progress in Higgs boson and top quark physics at hadron colliders
• Probing Color Octet Couplings at the Large Hadron Collider
• Multiple Z' -> t-tbar signals in a 4D Composite Higgs Model
• Search for New Physics in Rare Top Decays: $t\bar{t}$ Spin Correlations and Other Observables
• R-Parity Violating Supersymmetry Explanation for Large t tbar Forward-Backward Asymmetry
• Measurement of the forward-backward asymmetry of top-quark and antiquark pairs using the full CDF Run II data set
• Light Axigluon Contributions to b-bbar and c-cbar Asymmetry and Constraints on Flavor Changing Axigluon Currents
• Properties of the Top Quark
• Enhancing the sensitivity to New Physics in the top-antitop invariant mass distribution
• Anomalous Wtb coupling and forward-backward asymmetry of top quark production at the Tevatron
• Various Models Mimicking the SM Higgs Boson
• Non-factorizable effects in top quark production
• Azimuthal decorrelation in $t\bar{t}$ production at hadron colliders
• Single production of an exotic bottom partner at LHC
• Top Quark Asymmetries and Unparticle Physics
• Anomalous Wtb coupling at the LHC
• Comment on the CMS search for charge-asymmetric production of W' boson in ttbar + jet events
• Constraining Unparticles from Top Physics at TeVatron
• Top quark forward-backward asymmetry in R-parity violating supersymmetry
• A supersimple analysis of $e^{-}{e}^{+}\to t\bar{t}$ at high energy
• The Forward-Backward Top Asymmetry in a Singlet extension of the MSSM
• On the Forward-Backward Asymmetry of Leptonic Decays of $t\bar{t}$ at the Fermilab Tevatron
• Top-Quark Asymmetry -- A New Physics Overview
• Implications of effective axial-vector coupling of gluon for $t\bar{t}$ spin polarizations at the LHC
• Constraints on four-fermion interactions from the $t\bar{t}$ charge asymmetry at hadron colliders
• Asymmetry in ${\Lambda }_b$ and ${\bar{\Lambda }}_b$ production
• New Physics effects on hadronic decay asymmetries of the Top quark
• A Pseudoscalar Resonance That Could Resemble the Higgs
• Top Quark Physics at the Tevatron
• Tevatron Top Quark Forward-Backward Asymmetry -- Implications for Same-sign Top Quark Pair Production
• A Higgs-Like Scalar With Mixed-Parity and Standard-Model-Like Couplings Could be Further Evidence for Underlying Massless SU(5) Unification
• Monte Carlo event generators & the top quark forward--backward asymmetry
• Recent theoretical progress in top quark pair production at hadron colliders
• Top-quark forward-backward asymmetry from a color-octet t-channel resonance
• Large Hadron Collider constraints on a light baryon number violating sbottom coupling to a top and a light quark
• Correlation of top asymmetries: loop versus tree origins
• Parity Nonconservation in Strong Interactions
• The ttbar asymmetry in the Standard Model and beyond
• Measurement of the Charge Asymmetry in Top Quark Pair Production
• Improving Combinatorial Ambiguities of ttbar Events Using Neural Networks
• Experimental status of top charge asymmetry measurements
• Impact of Torsion Space-Time on $t\bar{t}$ observables at Hadron Colliders
• LHC Dijet Signals in New Physics Models for Top Forward-Backward Asymmetry
• Diboson production at LHC with warped extra dimensions
• Charge Asymmetry in Top Pair plus Jet Production -- A Snowmass White Paper
• QCD and Collider Processes
• Measurements of the top-quark properties at CMS
• LHC and Tevatron constraints on a W' model interpretation of the top quark forward-backward asymmetry
• Legacy limits and hints of New Physics at the Tevatron
• Study the Forward-Backward Asymmetry of the Top Quark Production in the Randall-Sundrum Model with an Extension of Strong Interaction
• Top-antitop resonance searches beyond 1 TeV
• Top Quark Polarization and the Search for New Physics
• Review of recent measurements in the top quark sector at the Tevatron
• Constraining parameter space of the Little Higgs model by data of tera-Z factory and ILC
• Bottom partner B' and Zb production at the LHC
• Recent studies of top quark properties and decays at hadron colliders
• NLO merging in tt+jets
• MSSM corrections to the top-antitop quark forward-backward asymmetry at the Tevatron
• Beyond the Desert: Tevatron and LHC Results on Searches for Physics Beyond the Standard Model
• Heavy Flavour Working Group Summary
• LHC searches for physics beyond the Standard Model with top quarks
• Non-perturbative approach to the problem of anomalous FB asymmetry in top pair production at TEVATRON
• Measurement of the inclusive ttgamma cross section at sqrt(s) = 7 TeV with the ATLAS detector
• Searches for New Physics in Top Events at the Tevatron
• Mass and rapidity dependent top quark forward-backward asymmetry in the effective Lagrangian approach