Same-sign Tops: A Powerful Diagnostic Test for Models of New Physics

Abstract

We study the connection between the same sign top (SST) and the top quark forward-backward asymmetry $A_{FB}^t$. We find that a large class of new physics models that have been proposed to account for the $A_{FB}^t$ lead to SST quark production rate much larger than the observed rate at the LHC and consequently are severely constrained or ruled out. Our model independent, general, operator analysis shows that none of the tree-level flavor-changing operators are able to explain $A_{FB}^t$ and simultaneously remain consistent with the same-sign top-quark production constraints from the LHC data.

19 LaTeX pages, 3 Tables and 4 png Figures, accepted version for publication in JHEP

References in corpus (94)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• MadGraph 5 : Going Beyond
• MadGraph/MadEvent v4: The New Web Generation
• FeynRules - Feynman rules made easy
• An update on vector boson pair production at hadron colliders
• Automatic Generation of Tree Level Helicity Amplitudes
• Inclusive Jet Production, Parton Distributions, and the Search for New Physics
• Forward-backward asymmetry in top quark-antiquark production
• Charge asymmetry of heavy quarks at hadron colliders
• NLO QCD corrections to t tbar + jet production at hadron colliders
• Renormalization-Group Improved Predictions for Top-Quark Pair Production at Hadron Colliders
• Charge asymmetry in hadroproduction of heavy quarks
• Charge asymmetries of top quarks at hadron colliders revisited
• Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders
• Top quark forward-backward asymmetry from new t-channel physics
• Search for the decay $B_s^0\to {\overline{D}}^0{f}_0(980)$
• The electroweak contribution to the top quark forward-backward asymmetry at the Tevatron
• Threshold Resummation for the Top Quark Charge Asymmetry
• NLO QCD corrections to top quark pair production in association with one hard jet at hadron colliders
• Top Quark Forward-Backward Asymmetry
• Explorations of the Top Quark Forward-Backward Asymmetry at the Tevatron
• Same-sign W pair production as a probe of double parton scattering at the LHC
• Search for new physics in events with same-sign dileptons and jets in pp collisions at sqrt(s) = 8 TeV
• Light colored scalars from grand unification and the forward-backward asymmetry in top quark pair production
• Forward-Backward Asymmetry of Top Quark Pair Production
• Standard Model Top Quark Asymmetry at the Fermilab Tevatron
• Probing the Tevatron t tbar asymmetry at LHC
• 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
• Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at sqrt(s) = 7 TeV
• Combination of ttbar cross section measurements and constraints on the mass of the top quark and its decays into charged Higgs bosons
• Top quark forward-backward asymmetry at the Tevatron: a comparative study in different new physics models
• Like-Sign W Boson Production at the LHC as a Probe of Double Parton Scattering
• Forward-backward asymmetry of top quark in diquark models
• Forward-backward asymmetry in t anti-t production from flavour symmetries
• On Models of New Physics for the Tevatron Top A_FB
• Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry
• Explaining the t-tbar asymmetry with a light axigluon
• Top production at the Tevatron/LHC and nonstandard, strongly interacting spin one particles
• 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
• Forward-backward asymmetry in top quark production from light colored scalars in SO(10) model
• Top polarization, forward-backward asymmetry and new physics
• Top Quark Forward-Backward Asymmetry in the Large Invariant Mass Region
• Simple models for the top asymmetry: constraints and predictions
• Tevatron Asymmetry of Tops in a W',Z' Model
• New-physics contributions to the forward-backward asymmetry in B -> K* mu+ mu-
• Top quark forward-backward asymmetry, FCNC decays and like-sign pair production as a joint probe of new physics
• Longitudinal top polarization as a probe of a possible origin of forward-backward asymmetry of the top quark at the Tevatron
• 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
• Search for same-sign top-quark pair production at sqrt(s) = 7 TeV and limits on flavour changing neutral currents in the top sector
• Searching for Top Flavor Violating Resonances
• Scalar-mediated $t\bar{t}$ forward-backward asymmetry
• Searching for $Z^{{}^{\prime }}$ Gauge Boson in an Anomaly-Free U(1)${}^{\prime }$ Gauge Family Model
• Top quark asymmetry and Wjj excess at CDF from gauged flavor symmetry
• Search for new physics in events with same-sign dileptons and b jets in pp collisions at sqrt(s) = 8 TeV
• An effective approach to same sign top pair production at the LHC and the forward-backward asymmetry at the Tevatron
• Top condensation as a motivated explanation of the top forward-backward asymmetry
• A unified, flavor symmetric explanation for the t-tbar asymmetry and Wjj excess at CDF
• The Axigluon, a Four-Site Model and the Top Quark Forward-Backward Asymmetry at the Tevatron
• Top quark forward-backward asymmetry from the $3-3-1$ model
• Effective axial-vector coupling of gluon as an explanation to the top quark asymmetry
• Top forward-backward asymmetry and the CDF Wjj excess in leptophobic U(1)' flavor models
• Chiral U(1) flavor models and flavored Higgs doublets: the top FB asymmetry and the Wjj
• The Top Forward Backward Asymmetry with general Z ' couplings
• The Top Quark Production Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Forward-Backward t tbar Asymmetry from Anomalous Stop Pair Production
• A Revisit to Top Quark Forward-Backward Asymmetry
• Top quark asymmetry and dijet resonances
• Tevatron Top $A_{FB}$ Versus LHC Top Physics
• Top quark forward-backward asymmetry from SU(N_c) color
• A charged Z' to conciliate the apparent disagreement between top-antitop Tevatron forward-backward asymmetry and LHC charge asymmetry
• B physics constraints on a flavor symmetric scalar model to account for the ttbar asymmetry and Wjj excess at CDF
• Probing topcolor-assisted technicolor from top charge asymmetry and triple-top production at the LHC
• Top asymmetry and the search for a light hadronic resonance in association with single top
• Possible Common Origin of the Top Forward-backward Asymmetry and the CDF Dijet Resonance
• Top quark forward-backward asymmetry and charge asymmetry in left-right twin Higgs model
• Model independent analysis of top quark forward-backward asymmetry at the Tevatron up to $\mathcal{O}(\as^2/Λ^2)$
• Top Quark Pair Production and Asymmetry at the Tevatron and LHC in Left-Right Models
• Color & Weak triplet scalars, the dimuon asymmetry in $B_s$ decay, the top forward-backward asymmetry, and the CDF dijet excess
• Perturbative unitarity constraints on general W' models and collider implications
• Massive Spin-2 States as the Origin of the Top Quark Forward-Backward Asymmetry
• Top quark forward-backward asymmetry and W^prime bosons
• Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks
• Interpretations and Implications of the Top Quark Rapidity Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Next-to-leading order QCD effect of $W^{\prime }$ on top quark Forward-Backward Asymmetry
• New physics contributions to the forward-backward asymmetry at the Tevatron
• Direct detection and CMB constraints on light DM scenario of top quark asymmetry and dijet excess at Tevatron
• 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"
• Top Quark Forward-Backward Asymmetry and Anomalous Right-Handed Charge Currents
• Anomalous Wtb coupling and forward-backward asymmetry of top quark production at the Tevatron
• Same sign top-pairs in a non-universal Z' model at the LHC

Cited by in corpus (11)

• Status of the semileptonic $B$ decays and muon g-2 in general 2HDMs with right-handed neutrinos
• Effective field theory approach to top-quark decay at next-to-leading order in QCD
• Top-flavored dark matter and the forward-backward asymmetry
• Rare Top Decays as Probes of Flavorful Higgs Bosons
• Constraining the flavor changing Higgs couplings to the top-quark at the LHC
• Search for top quark flavour changing neutral currents in same-sign top quark production
• Limits on the anomalous $Wtq$ couplings
• Same-sign top pair plus $W$ production in flavor changing vector and scalar models
• Top FCNC induced by a Z' boson
• Signs of Tops from Highly Mixed Stops
• Constraining parameter space of the Little Higgs model by data of tera-Z factory and ILC