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noimgSummary of the leading experimental and theoretical uncertainties on the \CHI distributions. The maximum uncertainties over all \CHI bins for the lowest and highest $M_{jj}$ ranges are given. The dominant experimental contribution is the statistical uncertainty while the dominant contribution to the NLO perturbative QCD uncertainty is the factorization and renormalization scale uncertainty.

Normalized dijet angular distributions for $|y_\text{boost}|<1.11$ in several $M_{jj}$ ranges. For clarity, the distributions are shifted vertically by the additive amounts shown in parentheses in the figure. The vertical error bars represent the statistical and systematic uncertainties added in quadrature. The horizontal bars correspond to the $\chi_\text{dijet}$ bin width. The results are compared with the predictions of NLO QCD with CTEQ6.6 PDF (shaded band) and with predictions for QCD+CI from~\cite{gao_nlo} at the CI scale $\Lambda^{+}_{LL/RR}=7$\TeV (dashed histogram). Non-perturbative corrections due to hadronization and multiple parton interactions are applied to the predictions. The shaded band indicates the total uncertainty on the NLO QCD predictions due to $\mu_r$ and $\mu_f$ scale variations, PDFs, as well as the uncertainties from the non-perturbative corrections, which have all been added in quadrature.

The normalized dijet angular distribution in the highest dijet mass range $M_{jj}>3$\TeV compared to various contact interaction models (dashed and dotted histograms). Non-perturbative corrections due to hadronization and multiple parton interactions are applied to the predictions. The vertical error bars represent the statistical and systematic uncertainties added in quadrature. The horizontal bars correspond to the $\chi_\text{dijet}$ bin width. The shaded band represents the NLO QCD prediction and includes the systematic uncertainties due to $\mu_r$ and $\mu_f$ scale variations and PDF uncertainties, as well as the uncertainties from the non-perturbative corrections added in quadrature.

Observed (solid lines) and expected (dashed lines) 95\% C.L. limits for the contact interaction scale $\Lambda$ for the different CI models. The dark (light) gray bands indicate the $\pm 1 \sigma$ ($\pm 2 \sigma$) uncertainties on the expected limits.