On the modeling of $t\bar{t}W^\pm$ signatures at the LHC

TL;DR

This paper reviews recent advances in accurately modeling the $tar{t}W^ ext{±}$ process at the LHC, emphasizing the impact of various computational techniques on predicting fiducial signatures involving top-quark decays.

Contribution

It compares multiple modeling approaches for $tar{t}W^ ext{±}$ production, highlighting their effects on theoretical predictions for LHC signatures.

Findings

Parton shower matching significantly affects predictions.

Off-shell effects are important for accurate modeling.

Different approaches yield varying levels of precision.

Abstract

We discuss our recent progress on improving the theoretical description of the $pp \to t\bar{t}W^\pm$ process with particular focus on fiducial signatures that include top-quark decays. We employ a wide range of techniques from parton shower matching, narrow width approximation to full off-shell computations to assess the importance of the different modeling approaches.