Theory advances for $t\bar{t}W$ multi-lepton predictions

TL;DR

This paper reviews recent theoretical progress in predicting the $t\bar{t}W$ process, focusing on multi-lepton signatures, higher-order QCD and electroweak contributions, and multi-jet merging techniques.

Contribution

It provides a comparison of advanced predictions for $t\bar{t}W$ production, including higher-order corrections and improved merging methods.

Findings

Comparison of state-of-the-art predictions for multi-lepton signatures.

Inclusion of leading QCD and subleading electroweak contributions.

Discussion of recent improvements with multi-jet merging techniques.

Abstract

We report on recent theoretical advances in the description of the $pp\to t\bar{t}W$ process. First, we discuss a comparison of many state-of-the-art predictions for multi-lepton signatures including the leading QCD contributions at $\mathcal{O}(\alpha_s^3\alpha^6)$ as well as subleading EW contributions at $\mathcal{O}(\alpha_s\alpha^8)$. Furthermore, we briefly discuss recent improvements using multi-jet merging techniques.