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

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 $pp\to e^+ν_eμ^- \barν_μb\bar{b}b\bar{b}$ 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.

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