From Tevatron's top and lepton-based asymmetries to the LHC

Abstract

We define a lepton-based asymmetry in semi-leptonic ttbar production at the LHC. We show that the ratio of this lepton-based asymmetry and the ttbar charge asymmetry, measured as a function of the lepton transverse momentum or the ttbar invariant mass is a robust observable in the Standard Model. It is stable against higher order corrections and mis-modeling effects. We show that this ratio can also be a powerful discriminant among different new physics models and between them and the Standard Model. Finally, we show that a related ratio defined at the Tevatron is also robust as a function of the ttbar invariant mass.

20 pages

References in corpus (3)

• Parton distributions for the LHC
• Searches for new physics using the ttbar invariant mass distribution in pp collisions at sqrt(s)=8 TeV
• No like-sign tops at Tevatron: Constraints on extended models and implications for the t tbar asymmetry

Cited by in corpus (9)

• Asymmetries in top quark pair production at hadron colliders
• A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions
• Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 8 TeV using a template method
• Simultaneous measurement of forward-backward asymmetry and top polarization in dilepton final states from $t\bar{t}$ production at the Tevatron
• Looking for bSM physics using top-quark polarization and decay-lepton kinematic asymmetries
• First measurement of the forward-backward asymmetry in bottom-quark pair production at high mass
• Top Quark Charge Asymmetry: Searching for Light Axigluons in top pair + jet Production at the LHC
• Measurement of top quark polarization in $t\overline{t}$ lepton+jets final states
• Single lepton charge asymmetries in $t\bar{t}$ and $t\bar{t}\gamma$ production at the LHC