CP violating anomalous top-quark couplings at the LHC

TL;DR

This paper investigates CP violating anomalous top-quark couplings at the LHC by analyzing T odd correlations and asymmetries in top-quark pair production and decay, aiming to identify sensitive observables.

Contribution

It identifies the most sensitive T odd correlations and asymmetries for detecting CP violating anomalous top-quark couplings at the LHC.

Findings

Certain counting asymmetries show high sensitivity to CP violating couplings.

Methodology for analyzing T odd correlations in top-quark processes.

Potential to improve detection of CP violation in top-quark interactions.

Abstract

We study the T odd correlations induced by CP violating anomalous top-quark couplings at both production and decay level in the process gg --> t t_bar --> (b mu+ nu_mu) (b_bar mu- nu_mu_bar). We consider several counting asymmetries at the parton level and find the ones with the most sensitivity to each of these anomalous couplings at the LHC.