LHC Prospects for Asymmetric Top-Antitop Production

TL;DR

This paper discusses the potential of the LHC to measure the top-antitop charge asymmetry, which tests quantum chromodynamics and could reveal new physics beyond the standard model, especially in associated production channels.

Contribution

It provides a comprehensive overview of the prospects for studying top charge asymmetry at the LHC, including novel observables in associated production processes.

Findings

Charge asymmetry is a key test of QCD.

Associated production channels enhance sensitivity to new physics.

Prospects for measurements at the LHC are promising.

Abstract

The charge asymmetry in hadronic top-antitop-quark production is a powerful test observable of perturbative quantum chromodynamics. Since its origin in terms of Feynman diagrams is distinct from charge-symmetric top-antitop production, probing the charge asymmetry provides complementary information to cross section measurements. Furthermore, asymmetric observables offer new ways to distinguish new physics beyond the standard model. This article summarizes prospects to investigate the top-quark charge asymmetry at the LHC in and beyond the standard model. Particular attention is given to observables in top-antitop production in association with a jet, a photon or a W boson.