and jets. The discrimination between jets and light-flavour quark or gluon jets is achieved via the probability ratio defined as $\textit{CvsL} = p(\PQc) / [ p(\PQc) + p(\cPqu{}\cPqd{}\cPqs{}\Pg) ]$. In the same way, discrimination between jets and jets makes use of the probability ratio defined as $\textit{CvsB} = p(\PQc) / [ p(\PQc) + p(\cPqb) ]$. The two discriminator ratio values for each jet define a two-dimensional distribution. The resulting tagging efficiency as a function of the jet and light-flavour quark or gluon jet efficiencies is shown in Fig. \[fig:CTagEfficiency\]. To account for residual O(10%) differences in the distributions of $\textit{CvsL}$ and $\textit{CvsB}$ found in the comparison of data and simulation, reshaping scale factors have been extracted using an iterative fit to distributions in control regions enriched in Drell–Yan+jets, semileptonic +jets, and +events that provide data samples with large fractions of light-flavour quark or gluon jets, jets, and jets, respectively.

![Efficiency to tag a jet as a function of the jet and light-flavour quark or gluon jet mistag rates. The working point adopted in the resolved-jet topology analysis to select the leading *CvsL* jets is shown with a white cross. The white lines correspond to jet iso-efficiency curves. The plot makes 