| 17 |
|
Source & Value (\%) & Method \\ |
| 18 |
|
\hline |
| 19 |
|
Luminosity & 4.4 & official CMS value \\ |
| 20 |
< |
Trigger efficiency & 3 & efficiency measurements documented in Sec. 4, Table 9 of AN-2012/248 \\ |
| 20 |
> |
Trigger efficiency & 5 & efficiency measurements documented in Sec. 4, Table 9 of AN-2012/248 \\ |
| 21 |
|
Lepton ID/isolation & 2 (per lepton) & Z tag-and-probe measurements in AN-2012/257 \\ |
| 22 |
|
B-veto & 6 & dedicated measurement in AN-2012/248 Sec. 7.6 \\ |
| 23 |
|
Z mass window requirement & 3 & see text and Table~\ref{tab:mllsyst} \\ |
| 29 |
|
\end{table} |
| 30 |
|
|
| 31 |
|
A summary of the efficiency uncertainties is presented in Table~\ref{tab:syst}. |
| 32 |
< |
The CMS uncertainty in the luminosity is 4.4\%. The trigger efficiency is measured in AN-2102/248 with an uncertainty of 3\%. |
| 32 |
> |
The CMS uncertainty in the luminosity is 4.4\%. The trigger efficiency is measured in AN-2102/248 with an uncertainty of 5\%. |
| 33 |
|
The lepton identification and isolation requirements are measured in data and MC and found to be consistent within 2\%, for |
| 34 |
|
the \pt\ $>$ 20 GeV region relevant for this analysis, in AN-2012/257. The impact of the b-veto on the signal acceptance |
| 35 |
|
is quantified with a dedicated measurement performed in Sec. 7.6 of AN-2012/248. The uncertainty in the selection of dilepton |
