Yields. Lumi = 19.66 fb^{-1}


                    & $N_1$         &$N_2$  \\
Data                & 23761 $\pm$ 154     &9809 $\pm$ 99 \\
Signal              & 21354.2 $\pm$ 146.13     &9391.6 $\pm$ 96.9 \\
SingleTop           & 2045.6  $\pm$ 613.7    &  251.6  $\pm$ 75.5 \\
Rare                &  58.6   $\pm$ 17.6     &  28.1  $\pm$  8.4  \\
Fake                &  48.5   $\pm$ 14.6     &  8.4  $\pm$  2.5   \\
DY                  & 280.0   $\pm$ 42.1     &  8.5  $\pm$  1.3   \\
Diboson             & 171.4   $\pm$ 34.3     &  8.9  $\pm$  1.8   \\

List of systematical uncertainties
\toprule
B-tagging                &      0.7  ( 0.3) \\
Mis-tagging              &      0.3  ( 0.1) \\
Jet Energy Scale         &      0.5  ( 0.2) \\
Jet Enery Resolution     &      0.1  ( 0.0) \\
Lepton Energy Scale      &      0.2  ( 0.1) \\
Pile-up                  &      1.1  ( 0.5) \\ 
Top Pt                   &      0.9  ( 0.4) \\
Lepton Efficiencies      &      3.5  ( 1.4) \\ 
Trigger Efficiencies     &      2.5  ( 1.0) \\
PDF Uncertainty          &      2.6 ( 1.1 ) \\
\midrule
SingleTop                &      7.5  ( 3.1) \\
Rare                     &      0.2  ( 0.1) \\
Fake                     &      0.2  ( 0.1) \\ 
DY                       &      0.5  ( 0.2) \\
Diboson                  &      0.4  ( 0.2) \\
Matching                 &      0.8  ( 0.3) \\
QCD scale                &      2.7  ( 1.1) \\
\midrule
Total systematics        &     9.7  ( 4.0) \\
Statistical              &     1.9  ( 0.8) \\
Luminosity               &     6.5  ( 2.7) \\
\midrule
Total                    &    11.8  ( 4.8) \\
\bottomrule

Measured x-section:

ElMu Channel: $\sigma_{t\bar{t}} = 243.0  \pm   9.7  \mathrm{(sys.)}  \pm  1.9 \mathrm{(stat.)} \pm  6.5 \mathrm{(lumi.)} \mathrm{pb}$
Measured eps_b: ElMu $\epsilon_b = 0.470  \pm 0.022 $