Top quark forward-backward asymmetry from new t-channel physics

Abstract

Motivated by recent measurements of the top quark forward-backward asymmetry at the Tevatron, we study how t-channel new physics can contribute to a large value. We concentrate on a theory with an abelian gauge boson possessing flavor changing couplings between up and top quarks, but satisfies flavor physics constraints. Collider constraints are strong, but can be consistent with the aid of small flavor diagonal couplings. We find that M_Z' ~ 160 GeV can yield a total lab-frame asymmetry of ~18% without being in conflict with other observables. There are implications for future collider searches, including exotic top quark decays, like-sign top quark production, and detailed measurements of the top production cross section. An alternate model with a gauged non-Abelian flavor symmetry would have similar phenomenology, but lacks the like-sign top signal.

5 pages, 4 figures

References in corpus (12)

• Implications of CTEQ global analysis for collider observables
• Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
• First measurement of the forward-backward charge asymmetry in top quark pair production
• The theoretical top quark cross section at the Tevatron and the LHC
• Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders
• Threshold Resummation for the Top Quark Charge Asymmetry
• Theory and Phenomenology of Exotic Isosinglet Quarks and Squarks
• Massive color-octet bosons and the charge asymmetries of top quarks at hadron colliders
• Heavy-quark pair production at two loops in QCD
• Top production at the Tevatron/LHC and nonstandard, strongly interacting spin one particles
• Measurement of the ttbar production cross section and top quark mass extraction using dilepton events in ppbar collisions
• Collider Signals of Maximal Flavor Violation: Same-Sign Leptons from Same-Sign Tops at the Tevatron

Cited by in corpus (152)

• Charge asymmetries of top quarks at hadron colliders revisited
• Explorations of the Top Quark Forward-Backward Asymmetry at the Tevatron
• Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Light colored scalars from grand unification and the forward-backward asymmetry in top quark pair production
• Forward-Backward Asymmetry of Top Quark Pair Production
• Probing the Tevatron t tbar asymmetry at LHC
• Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy
• Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs
• Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron
• Top quark asymmetry from a non-Abelian horizontal symmetry
• Top quark forward-backward asymmetry at the Tevatron: a comparative study in different new physics models
• Forward-backward asymmetry of top quark in diquark models
• Forward-backward asymmetry in t anti-t production from flavour symmetries
• Z'-induced FCNC decays of top, beauty and strange quarks
• Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry
• On Models of New Physics for the Tevatron Top A_FB
• An Effective Z'
• Explaining the t-tbar asymmetry with a light axigluon
• Light Z' Bosons at the Tevatron
• Axigluons cannot explain the observed top quark forward-backward asymmetry
• Direct CP violation in charm and flavor mixing beyond the SM
• Explaining the t tbar forward-backward asymmetry without dijet or flavor anomalies
• A Polarized View of the Top Asymmetry
• No like-sign tops at Tevatron: Constraints on extended models and implications for the t tbar asymmetry
• Top polarization, forward-backward asymmetry and new physics
• Measurement of the top quark pair production charge asymmetry in proton-proton collisions at 7 TeV using the ATLAS detector
• Asymmetries in t tbar production: LHC versus Tevatron
• Asymmetries in top quark pair production at hadron colliders
• Top Quark Forward-Backward Asymmetry in the Large Invariant Mass Region
• Tevatron Asymmetry of Tops in a W',Z' Model
• Review of new physics effects in t-tbar production
• Forward-backward asymmetry of top quark in unparticle physics
• Top quark forward-backward asymmetry, FCNC decays and like-sign pair production as a joint probe of new physics
• Discerning New Physics in Top-Antitop Production using Top Spin Observables at Hadron Colliders
• Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z^{\prime }$ model at $\mathcal{O}({\alpha }_s^2{\alpha }_X)$
• Top quark forward-backward asymmetry at Tevatron and its implications at the LHC
• Top-flavored dark matter and the forward-backward asymmetry
• Measurement of Leptonic Asymmetries and Top Quark Polarization in ttbar Production
• Phenomenology of a light gluon resonance in top-physics at Tevatron and LHC
• Search for same-sign top-quark pair production at sqrt(s) = 7 TeV and limits on flavour changing neutral currents in the top sector
• New physics effects on top quark spin correlation and polarization at the LHC: a comparative study in different models
• 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
• Searching for Top Flavor Violating Resonances
• Top Quark Physics at the LHC: A Review of the First Two Years
• Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF
• 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
• Implications of the CDF t\bar{t} Forward-Backward Asymmetry for Boosted Top Physics
• Boosting the t tbar charge asymmetry
• Flavor Symmetric Sectors and Collider Physics
• Measurement of the asymmetry in angular distributions of leptons produced in dilepton ttbar final states in ppbar collisions at sqrt(s)=1.96 TeV
• $A_{FB}^t$ Meets LHC
• Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the Standard Model with the ATLAS detector
• A Theory for Maximal Flavor Violation
• Searching for $Z^{{}^{\prime }}$ Gauge Boson in an Anomaly-Free U(1)${}^{\prime }$ Gauge Family Model
• Top condensation as a motivated explanation of the top forward-backward asymmetry
• An effective approach to same sign top pair production at the LHC and the forward-backward asymmetry at the Tevatron
• Testing new physics models by top charge asymmetry and polarization at the LHC
• Top quark forward-backward asymmetry from the $3-3-1$ model
• LHC Charge Asymmetry as Constraint on Models for the Tevatron Top Anomaly
• Top forward-backward asymmetry and the CDF Wjj excess in leptophobic U(1)' flavor models
• Exploring top quark FCNC within 2HDM type III in association with flavor physics
• Confronting Top AFB with Parity Violation Constraints
• Beautiful Mirrors at the LHC
• New Strongly Coupled Sector at the Tevatron and the LHC
• The Top Forward Backward Asymmetry with general Z ' couplings
• Shedding light on the $t\bar{t}$ asymmetry: the photon handle
• Collider-independent t tbar forward-backward asymmetries
• The Top Quark Production Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• A Revisit to Top Quark Forward-Backward Asymmetry
• Forward-Backward t tbar Asymmetry from Anomalous Stop Pair Production
• Tevatron Top $A_{FB}$ Versus LHC Top Physics
• Top quark asymmetry and dijet resonances
• Edge Charge Asymmetry in Top Pair Production at the LHC
• Leptonic Monotops at LHC
• A charged Z' to conciliate the apparent disagreement between top-antitop Tevatron forward-backward asymmetry and LHC charge asymmetry
• Top quark forward-backward asymmetry from SU(N_c) color
• Implications of the effective axial-vector coupling of gluon on top-quark charge asymmetry at the LHC
• Top A_FB at the Tevatron vs. charge asymmetry at the LHC in chiral U(1) flavor models with flavored Higgs doublets
• On mass limit for chiral color symmetry $G^{\prime }$-boson from Tevatron data on $t\bar{t}$ production
• Can Up FCNC solve the $\Delta A_{CP}$ puzzle?
• Top LHCb Physics
• Model-independent measurement of the top quark polarisation
• Search for anomalous production of prompt like-sign lepton pairs at sqrt(s) = 7 TeV with the ATLAS detector
• Spinning the Top
• Forward Tevatron Tops and Backward LHC Tops with Associates
• Probing topcolor-assisted technicolor from top charge asymmetry and triple-top production at the LHC
• Search for a low-mass ${\tau }^{-}{\tau }^{+}$ resonance in association with a bottom quark in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Atomki anomaly in gauged $U(1{)}_R$ symmetric model
• One-side forward-backward asymmetry at the LHC
• Top asymmetry and the search for a light hadronic resonance in association with single top
• Model independent analysis of top quark forward-backward asymmetry at the Tevatron up to $\mathcal{O}(\as^2/Λ^2)$
• 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
• Signal from sterile neutrino dark matter in extra $U(1)$ model at direct detection experiment
• Top Quark Pair Production and Asymmetry at the Tevatron and LHC in Left-Right Models
• Leptophobic Z' Boson and Parity-Violating eD Scattering
• Perturbative unitarity constraints on general W' models and collider implications
• Minimal realization of right-handed gauge symmetry
• Looking for bSM physics using top-quark polarization and decay-lepton kinematic asymmetries
• Collider-independent top quark forward-backward asymmetries: standard model predictions
• Top quark forward-backward asymmetry and W^prime bosons
• Neutrino and dark matter in a gauged $U(1{)}_R$ symmetry
• New color-octet axial vector boson revisited
• Probing for chiral $Z^{\prime }$ gauge boson through scattering measurement experiments
• Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks
• Renormalization group-induced phenomena of top pairs from four-quark effective operators
• Same-sign Tops: A Powerful Diagnostic Test for Models of New Physics
• Next-to-leading order QCD effect of $W^{\prime }$ on top quark Forward-Backward Asymmetry
• Interpretations and Implications of the Top Quark Rapidity Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Stealth QCD-like Strong Interactions and the t-tbar Asymmetry
• Impact of extra particles on indirect Z' limits
• Rare B decays and Tevatron top-pair asymmetry
• New physics contributions to the forward-backward asymmetry at the Tevatron
• Comment on measuring the t-tbar forward-backward asymmetry at ATLAS and CMS
• Ultraviolet Completions of Axigluon Models and Their Phenomenological Consequences
• Top Quark Forward-Backward Asymmetry and Anomalous Right-Handed Charge Currents
• Mass dependent top forward backward asymmetry in the effective Lagrangian approach: Addendum to "Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron"
• Signatures of top flavour-changing dark matter
• Probing four-fermion operators in the triple top production at future hadron colliders
• Top quark physics in the Vector Color-Octet Model
• Dirac dark matter, dark radiation, and the type-II seesaw mechanism in alternative $U(1{)}_X$ standard model
• Properties of the Top Quark
• Anomalous Wtb coupling and forward-backward asymmetry of top quark production at the Tevatron
• Azimuthal decorrelation in $t\bar{t}$ production at hadron colliders
• Various Models Mimicking the SM Higgs Boson
• Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production
• Constraining Unparticles from Top Physics at TeVatron
• One-loop effects on top pair production in the littlest Higgs model with T-parity at the LHC
• Top-Quark Asymmetry -- A New Physics Overview
• Evidence for the charge asymmetry in $pp\to t\bar{t}$ production at $\sqrt{s}=13$ TeV with the ATLAS detector
• Tau lepton charge asymmetry and new physics at the LHC
• On the Forward-Backward Asymmetry of Leptonic Decays of $t\bar{t}$ at the Fermilab Tevatron
• Implications of effective axial-vector coupling of gluon for $t\bar{t}$ spin polarizations at the LHC
• Top quark forward-backward asymmetry in R-parity violating supersymmetry
• New Physics effects on hadronic decay asymmetries of the Top quark
• Tevatron Top Quark Forward-Backward Asymmetry -- Implications for Same-sign Top Quark Pair Production
• Multi-Higgs doublet models with local $U(1{)}_H$ gauge symmetry and neutrino physics therein
• Top-quark forward-backward asymmetry from a color-octet t-channel resonance
• Correlation of top asymmetries: loop versus tree origins
• The ttbar asymmetry in the Standard Model and beyond
• Right handed neutrino production from $Z^{\prime }$ interactions in forward search experiments
• Top-philic Machine Learning
• An alternative gauged $U(1{)}_R$ symmetric model in light of the CDF II $W$ boson mass anomaly
• Signature of same-sign top pair production mediated by a nonuniversal $Z^{\prime }$ with QCD next-to-leading accuracy at the LHC
• Impact of Torsion Space-Time on $t\bar{t}$ observables at Hadron Colliders
• Discovery potential of a long-lived partner of inelastic dark matter at MATHUSLA in $U(1{)}_{X_3}$ extension of the standard model
• Colored bosons on top FBA and angular cross section for $t\bar{t}$ production
• LHC and Tevatron constraints on a W' model interpretation of the top quark forward-backward asymmetry
• Top-quark Polarization and Asymmetries at the LHC in the Effective Description of Squark Interactions
• Study the Forward-Backward Asymmetry of the Top Quark Production in the Randall-Sundrum Model with an Extension of Strong Interaction
• Chiral color symmetry and $G^{\prime }$-boson mass limit from Tevatron data on $t\bar{t}$-production
• Top Forward-backward asymmetry at the Tevatron vs. Charge asymmetry at the LHC in chiral $U(1{)}^{\prime }$ models with flavored Higgs fields