Table 3

CERN-LHC-ATLAS. Measurements of the inclusive and differential fiducial cross-sections for $t\bar{t}+Z$ production in proton-proton collisions at a centre-of-mass energy of 13 TeV with 139 fb−1 of data collected between 2015 and 2018. The fiducial regions for the trilepton channel are defined as: - Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 20 GeV for leading, subleading and third lepton, respectively. - The sum of the three lepton charges is required to be $\pm$1. - At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|<10$ GeV) and $m_{OSSF}>10$ GeV for each OSSF lepton pair. - Two orthogonal regions combined for inclusive measurement, different region for differential measurement. - $b$-jets requirements: pseudo-continuous $b$-tagging with different working points for inclusive measurement, fixed 85% $b$-tagging worki...