Charge asymmetry in top quark pair production in the di-lepton channel at the ATLAS experiment

TL;DR

This paper measures the charge asymmetry in top quark pair production in the di-lepton channel at ATLAS, finding results consistent with the Standard Model using a matrix element reconstruction method.

Contribution

It presents the first measurement of charge asymmetry in top quark pairs in the di-lepton channel at ATLAS with a matrix element approach.

Findings

Results are consistent with Standard Model predictions.

Lepton charge asymmetry measurements are included.

Reconstruction uses a leading order matrix element.

Abstract

The charge asymmetry in top quark pair production in the di-lepton $t\bar t$ channel using the ATLAS experiment at Large Hadron Collider is presented. The asymmetry is studied in the distribution of absolute rapidity difference between top and anti-top. The reconstruction of the $t\bar t$ system is based on a leading order matrix element. The lepton charge asymmetry is also presented. All results are consistent with the Standard Model.