Table 1.
The observed numbers of events in the data in the e+jets and μ+jets channels, for the two analyses after the common event selection and additional analysis-specific requirements. In addition, the expected numbers of signal and background events corresponding to the integrated luminosity of the data are given, where the single top quark production events are treated as signal for the 1d-analysis, and as background for the 2d-analysis. The Monte Carlo estimates assume SM cross-sections. The W+jets and QCD multijet background contributions are estimated from ATLAS data. The uncertainties for the estimates include different components detailed in the text. All predicted event numbers are quoted using one significant digit for the uncertainties, i.e. the trailing zeros are insignificant
| Process | 1d-analysis | 2d-analysis | ||
|---|---|---|---|---|
| e+jets | μ+jets | e+jets | μ+jets | |
 signal |
990±40 | 1450±50 | 3400±200 | 5100±300 |
| Single top (signal) | 43±2 | 53±3 | 190±10 | 280±20 |
| Z+jets | 12±3 | 8±3 | 83±8 | 100±8 |
| ZZ/WZ/WW | 2±<1 | 2±<1 | 11±2 | 18±2 |
| W+jets (data) | 80±60 | 100±70 | 700±500 | 1100±800 |
| QCD multijet (data) | 50±50 | 40±40 | 200±200 | 400±400 |
| Signal + background | 1180±80 | 1650±80 | 4500±500 | 6900±900 |
| Data | 1151 | 1724 | 4556 | 7225 |