Tevatron anomalies and LHC cross-checks

TL;DR

This paper reviews the observed charge asymmetry in top quark pair production at the Tevatron and LHC, comparing experimental results with Standard Model predictions and discussing potential new physics explanations.

Contribution

It provides a comprehensive review of the current theoretical and experimental status of top quark charge asymmetry anomalies at Tevatron and LHC.

Findings

Experimental asymmetry exceeds Standard Model predictions

Preliminary LHC results show similar asymmetry effects

Discussion of new physics scenarios to explain anomalies

Abstract

A sizeable charge asymmetry in top quark pair production has been observed at the Tevatron. The experimental results seem to exceed systematically the Standard Model theory predictions by a significant amount and have triggered a large number of suggestions for 'new physics'. The effect is also visible at the LHC, and preliminary results have already been presented by the ATLAS and CMS collaborations. In this talk, we review the present status of the theoretical predictions, and their comparison with the experimental measurements.