off-shell $t\bar{t}b\bar{b}$ in the di-lepton channel

TL;DR

This paper presents a detailed NLO QCD calculation of the off-shell $t\bar{t}b\bar{b}$ process in the di-lepton channel at the LHC, including all relevant contributions and uncertainties.

Contribution

It provides the first comprehensive NLO QCD analysis of the off-shell $t\bar{t}b\bar{b}$ process with full decay and resonance effects at the LHC.

Findings

NLO corrections significantly affect the cross section.

Theoretical uncertainties are quantified and analyzed.

Different $b$ jet definitions impact the results.

Abstract

We report on our recent calculation for the off-shell $t\bar{t}b\bar{b}$ process in the di-lepton decay channel at the LHC. Our results take into account NLO QCD corrections for the complete $pp\to e^+\nu_e\mu^- \bar{\nu}_\mu b\bar{b}b\bar{b}$ process, and include all double, single and non-resonant contributions. We investigate the size of the corrections and their associated theoretical uncertainties. We also briefly comment on the impact of different $b$ jet definitions on our results.