Charge asymmetry of top quarks

Understand

The LHC is a promising machine to discover new physics in the top sector.

• There are several models that predict the existence of heavy colored resonances decaying to top quarks in the TeV energy range.
• The production of such resonances might generate a sizable charge asymmetry of top versus antitop quarks.
• At the Tevatron, a 2 sigma discrepancy with the SM prediction for the forward--backward asymmetry has been found, boosting a renewed interest for this kind of models.