Fig. 9.

Reconstruction efficiencies (relative to the ID efficiency) and scale factors for CB muons (from $Z$ decays) as a function of detector region, muon $p_{\mathrm{T}}$ and muon $\mathit{\eta }$ as indicated in the figure. The efficiencies for the two reconstruction chains, obtained from data (without background correction) and Monte Carlo simulation (including backgrounds) are shown in the upper part of each figure. The corresponding scale factors are shown in the lower panels. The uncertainties are statistical only. The systematic uncertainties are discussed in Sect. 8.4