Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs

Abstract

The top quark forward-backward asymmetry measured at the Tevatron collider shows a large deviation from standard model expectations. Among possible interpretations, a non-universal $Z^{\prime }$ model is of particular interest as it naturally predicts a top quark in the forward region of large rapidity. To reproduce the size of the asymmetry, the couplings of the $Z^{\prime }$ to standard model quarks must be large, inevitably leading to copious production of same-sign top quark pairs at the energies of the Large Hadron Collider (LHC). We explore the discovery potential for $tt$ and $ttj$ production in early LHC experiments at 7-8 TeV and conclude that if {\it no} $tt$ signal is observed with 1 fb${}^{-1}$ of integrated luminosity, then a non-universal $Z^{\prime }$ alone cannot explain the Tevatron forward-backward asymmetry.

arXiv commentTevatron limit from same-sign tt search added

References in corpus (47)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• MadGraph/MadEvent v4: The New Web Generation
• Measuring masses of semi-invisibly decaying particles pair produced at hadron colliders
• 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
• Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders
• Effective-Field-Theory Approach to Top-Quark Production and Decay
• Top quark forward-backward asymmetry from new t-channel physics
• Axigluon as Possible Explanation for $p\bar{p}\to t\bar{t}$ Forward-Backward Asymmetry
• Threshold Resummation for the Top Quark Charge Asymmetry
• Non-resonant New Physics in Top Pair Production at Hadron Colliders
• 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
• Effective four-fermion operators in top physics: a roadmap
• First Measurement of the $\lowercase{\ttbar}$ Differential Cross Section $\lowercase{dσ/d}M_{\lowercase{t\overline{t}}}$ in $\lowercase{\ppbar}$ Collisions at $\sqrt{\lowercase{s}}=1.96$ 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
• The forward-backward asymmetry of top quark production at the Tevatron in warped extra dimensional models
• Constraining heavy colored resonances from top-antitop quark events
• Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron
• LHC Predictions from a Tevatron Anomaly in the Top Quark Forward-Backward Asymmetry
• Top quark forward-backward asymmetry at the Tevatron: a comparative study in different new physics models
• Massive color-octet bosons and the charge asymmetries of top quarks at hadron colliders
• Forward-backward asymmetry of top quark in diquark models
• Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry
• Axigluons cannot explain the observed top quark forward-backward asymmetry
• Top-Quark Forward-Backward Asymmetry in Randall-Sundrum Models Beyond the Leading Order
• Top Quark Forward-Backward Asymmetry in the Large Invariant Mass Region
• Forward-backward asymmetry of top quark in unparticle physics
• Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC
• Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z^{\prime }$ model at $\mathcal{O}({\alpha }_s^2{\alpha }_X)$
• Color Sextet Scalars in Early LHC Experiments
• Analytical solution of ttbar dilepton equations
• Color Sextet Vector Bosons and Same-Sign Top Quark Pairs at the LHC
• FCNC top quark production via anomalous tqV couplings beyond leading order
• New Strongly Coupled Sector at the Tevatron and the LHC
• Heavy colored resonances in top-antitop + jet at the LHC
• Chiral color symmetry and possible $G^{\prime }$-boson effects at the Tevatron and LHC
• FCNC production of same sign Top quark pairs at the LHC
• On mass limit for chiral color symmetry $G^{\prime }$-boson from Tevatron data on $t\bar{t}$ production
• Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
• Same-sign top pair production in an extra-dimension model of flavor at the CERN Large Hadron Collider

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