"Figure 6 (SR2b resolved)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

Post-fit distributions of the reconstructed mt̄t for the three signal regions of the 1-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (nobs-npred)/√nobs, and nobs and npred refer to the number of observed events in data and the number of predicted events, respectively. "Vjets" refers to the Z + jets and W+ jets backgrounds, whilst "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together. The table below shows the total number of events in each bin, and is not normalised by bin width.