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

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.

Comments: Talk at the 14th International Workshop on Top Quark Physics (videoconference), 13-17 September 2021