Fig. 3.
Measurements of as a function of the invariant mass of the system (upper left), the number of jets (upper right), the pseudorapidity of the jet assigned to the hadronic decay branch (lower left) and the between the light-quark jets (lower right) compared to different generator models The filled circles represent the data, and the other symbols are for the simulations. For reasons of clarity, the horizontal bars indicating the bin widths are shown only for the data points and each of the simulations is shown as a single offset point with a vertical error bar representing its statistical uncertainty. The statistical uncertainty of the data is displayed by the inner error bars. For the outer error bars, the systematic uncertainties are added in quadrature.
