| 26 |
|
$P_T>20$ GeV is very high, except in some corners |
| 27 |
|
of phase space, see Section~\ref{sec:trgeffsum}. |
| 28 |
|
We estimate the efficiency uncertainty to be a few percent, |
| 29 |
< |
mostly in the low $P_T$ region. |
| 29 |
> |
mostly in the low $P_T$ region. For $t\bar{t}$, LM0 and LM1 |
| 30 |
> |
we find trigger efficiency uncertainties of less than 1\%, evaluated |
| 31 |
> |
by taking the difference in yields in the signal region between |
| 32 |
> |
assuming 100\% trigger efficiency and using the trigger efficiency model. |
| 33 |
> |
% trigger efficiency uncertainties: ttbar 0.3%, LM0 0.6%, LM1 0.6% |
| 34 |
|
|
| 35 |
|
\begin{figure}[tbh] |
| 36 |
|
\begin{center} |
| 72 |
|
the final state. For example, in MC we find that the |
| 73 |
|
lepton isolation efficiency differs by $\approx 4\%$ |
| 74 |
|
{\bf per lepton} between $Z$ events and $t\bar{t}$ events\cite{ref:top}. |
| 75 |
+ |
{\bf \color{red} VERIFY THAT THESE VALUES ARE UNCHANGED IN 38X MC. } |
| 76 |
|
%\noindent {\bf This figure should be cut off at 100 GeV, and |
| 77 |
|
%the y-axis should be zero-suppressed} |
| 78 |
|
|
| 87 |
|
and two benchmark SUSY points. The uncertainties are calculated |
| 88 |
|
assuming a 5\% uncertainty to the hadronic energy scale in CMS. |
| 89 |
|
|
| 90 |
< |
For $t\bar{t}$ we find uncertainties of 8\% (baseline |
| 91 |
< |
selection) and 30\% (signal region D); for LM0 and LM1 we find |
| 92 |
< |
14\% and 6\% respectively for signal region D. |
| 90 |
> |
For $t\bar{t}$ we find uncertainties of 3\% (baseline |
| 91 |
> |
selection) and 21\% (signal region D); for LM0 and LM1 we find |
| 92 |
> |
15\% and 6\% respectively for signal region D |
| 93 |
> |
{\bf \color{red} THESE VALUES HAVE BEEN RECALCULATED FOR 38X MC, AWAITING VERIFICATION} |
