Predictions for off-shell $t\bar{t}Z$ production at the LHC: the complete set of LO and NLO contributions

TL;DR

This paper provides comprehensive predictions for off-shell top-antitop-Z production at the LHC, including all leading and next-to-leading order contributions, accounting for off-shell effects with full matrix elements.

Contribution

It introduces a complete calculation of LO and NLO contributions for t-tbar-Z production with off-shell effects in a realistic setup.

Findings

Full matrix element calculation including off-shell effects

Integrated and differential cross-sections reported

Complete set of LO and NLO contributions included

Abstract

We present predictions for the production and decay of a top--antitop pair in association with a Z boson in the multi-lepton decay channel at the LHC. Our results include the complete set of LO and NLO contributions. Since our calculation is based on full matrix elements, off-shell effects are entirely taken into account. Integrated and differential cross-sections are reported for a realistic fiducial setup.