| 35 |
|
\end{figure} |
| 36 |
|
|
| 37 |
|
|
| 38 |
+ |
\begin{table}[hbt] |
| 39 |
+ |
\begin{center} |
| 40 |
+ |
\caption{\label{tab:tagandprobe} Tag and probe results on $Z \to \ell \ell$ |
| 41 |
+ |
on data and MC. We quote ID efficiency given isolation and |
| 42 |
+ |
the isolation efficiency given ID.} |
| 43 |
+ |
\begin{tabular}{|l||c|c|} |
| 44 |
+ |
\hline |
| 45 |
+ |
& Data T\&P & MC T\&P \\ \hline |
| 46 |
+ |
$\epsilon(id|iso)$ electrons & $0.909\pm0.006$ & 0.926 \\ |
| 47 |
+ |
$\epsilon(iso|id)$ electrons & $0.987\pm0.003$ & 0.985 \\ |
| 48 |
+ |
$\epsilon(id|iso)$ muons & $0.955\pm0.003$ & 0.953 \\ |
| 49 |
+ |
$\epsilon(iso|id)$ muons & $0.984\pm0.003$ & 0.981 \\ |
| 50 |
+ |
\hline |
| 51 |
+ |
\end{tabular} |
| 52 |
+ |
\end{center} |
| 53 |
+ |
\end{table} |
| 54 |
+ |
|
| 55 |
+ |
|
| 56 |
|
The ID efficiencies in MC are shown in |
| 57 |
|
Figures~\ref{fig:effttbar} |
| 58 |
|
for the leptons from $t \to W \to \ell$ and $t \to W \to \tau \to \ell$. |
| 59 |
< |
Tag and probe studies show that these are correct to about |
| 60 |
< |
{\color{red} xx\%. (We need to do tag-and-probe on the full sample, |
| 61 |
< |
see what we get, and write text accordingly).} |
| 44 |
< |
|
| 45 |
< |
The isolation efficiency depends on the jet activity in |
| 59 |
> |
Tag and probe studies show that these are correct to about 2\%, |
| 60 |
> |
see Table~\ref{tab:tagandprobe}. |
| 61 |
> |
Note that the isolation efficiency depends on the jet activity in |
| 62 |
|
the final state. For example, in MC we find that the |
| 63 |
|
lepton isolation efficiency differs by $\approx 4\%$ |
| 64 |
|
{\bf per lepton} between $Z$ events and $t\bar{t}$ events\cite{ref:top}. |
| 74 |
|
and two benchmark SUSY points. The uncertainties are calculated |
| 75 |
|
assuming a 5\% uncertainty to the hadronic energy scale in CMS. |
| 76 |
|
|
| 77 |
< |
{\color{red} For $t\bar{t}$ we find uncertainties of 8\% (baseline |
| 77 |
> |
For $t\bar{t}$ we find uncertainties of 8\% (baseline |
| 78 |
|
selection) and 30\% (signal region D); for LM0 and LM1 we find |
| 79 |
< |
14\% and 6\% respectively for signal region D.} |
| 79 |
> |
14\% and 6\% respectively for signal region D. |
