Wing Sheung Chan

Object reconstruction and identification 61 0 5 10 15 20 25 [GeV] T true E 0 0.2 0.4 0.6 0.8 1 Reconstruction efficiency Cluster Track Cluster and t rack Electron c andidate ATLAS Simulation (a) 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 true /E calib IQE of E Simulation ATLAS |<1.37 η Electron, 0.8<| Supercluster (SC) Fixed-size cluster (SW) 6 78 10 20 30 40 2 10 2 10 × 2 3 10 [GeV] true T E 0.6 0.8 1 1.2 SW /IQE SC IQE (b) 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 true /E calib IQE of E Simulation ATLAS |<2.2 η Electron, 2.0<| Supercluster (SC) Fixed-size cluster (SW) 6 78 10 20 30 40 2 10 2 10 × 2 3 10 [GeV] true T E 0.6 0.8 1 1.2 SW /IQE SC IQE (c) Efficiency 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 id ε Data identification efficiency Loose Medium Tight ATLAS -1 = 13 TeV, 37.1 fb s [GeV] T E 20 40 60 80 100 120 140 Data / MC 0.9 1 1.1 (d) Efficiency 0.4 0.5 0.6 0.7 0.8 0.9 1 iso ε Data isolation efficiency Fix (Loose) Fix (Tight, Track Only) Fix (Calo only) = 0.4) max Fix (Track R Fix (Tight) ATLAS -1 = 13 TeV, 37.1 fb s [GeV] T E 20 40 60 80 100 120 140 Data / MC 0.96 0.98 1 1.02 1.04 (e) Figure 3.6.: The (a) estimated reconstruction efficiency, (b), (c) estimated energy resolution, (d) measured identification efficiency and (e) measured isolation efficiency of electrons as functions of the electron transverse energy [84, 85] . The energy resolution is given as effective interquartile range (IQE).