Fig. 1.

Invariant mass $m_{\mathrm{W}}^{\text{reco}}$ of the two untagged jets (left) and invariant mass $m_{\text{t}}^{\text{reco}}$ of the two untagged jets and one of the $\text{b}$-tagged jets (right) after the $\text{b}$ tagging requirement. For the simulated $\text{t}\overline{\text{t}}$ events, the jet-parton assignments are classified as correct, wrong, and unmatched permutations as described in the text. The vertical bars show the statistical uncertainty on the data and the hatched bands show the systematic uncertainties considered in Sect. 5. The lower portion of each panel shows the ratio of the yields between data and the simulation. The simulations are normalized to the integrated luminosity