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Revision 1.9 by benhoob, Fri Oct 5 18:28:04 2012 UTC

# Line 1 | Line 1
1   %\section{Systematics Uncertainties on the Background Prediction}
2   %\label{sec:systematics}
3  
4 < [ADD INTRODUCTORY BLURB ON UNCERTAINTIES \\
5 < ADD COMPARISONS OF ALL THE ALTERNATIVE SAMPLES FOR ALL THE SIGNAL
6 < REGIONS \\
7 < LIST ALL THE UNCERTAINTIES INCLUDED AND THEIR VALUES]
4 > [DESCRIBE HERE ONE BY ONE THE UNCERTAINTIES THAT ARE PRESENT IN THE SPREADSHHET
5 > FROM WHICH WE CALCULATE THE TOTAL UNCERTAINTY. WE KNOW HOW TO DO THIS
6 > AND
7 > WE HAVE THE TECHNOLOGY FROM THE 7 TEV ANALYSIS TO PROPAGATE ALL
8 > UNCERTAINTIES
9 > CORRECTLY THROUGH.  WE WILL DO IT ONCE WE HAVE SETTLED ON THE
10 > INDIVIDUAL PIECES WHICH ARE STILL IN FLUX]
11 >
12 > In this Section we discuss the systematic uncertainty on the BG
13 > prediction.  This prediction is assembled from the event
14 > counts in the peak region of the transverse mass distribution as
15 > well as Monte Carlo
16 > with a number of correction factors, as described previously.
17 > The
18 > final uncertainty on the prediction is built up from the uncertainties in these
19 > individual
20 > components.
21 > The calculation is done for each signal
22 > region,
23 > for electrons and muons separately.
24 >
25 > The choice to normalizing to the peak region of $M_T$ has the
26 > advantage that some uncertainties, e.g., luminosity, cancel.
27 > It does however introduce complications because it couples
28 > some of the uncertainties in non-trivial ways.  For example,
29 > the primary effect of an uncertainty on the rare MC cross-section
30 > is to introduce an uncertainty in the rare MC background estimate
31 > which comes entirely from MC.   But this uncertainty also affects,
32 > for example,
33 > the $t\bar{t} \to$ dilepton BG estimate because it changes the
34 > $t\bar{t}$ normalization to the peak region (because some of the
35 > events in the peak region are from rare processes).  These effects
36 > are carefully accounted for.  The contribution to the overall
37 > uncertainty from each BG source is tabulated in
38 > Section~\ref{sec:bgunc-bottomline}.
39 > First, however, we discuss the uncertainties one-by-one and we comment
40 > on their impact on the overall result, at least to first order.
41 > Second order effects, such as the one described, are also included.
42 >
43 > \subsection{Statistical uncertainties on the event counts in the $M_T$
44 > peak regions}
45 > These vary between XX and XX \%, depending on the signal region
46 > (different
47 > signal regions have different \met\ requirements, thus they also have
48 > different $M_T$ regions used as control.
49 > Since
50 > the major BG, eg, $t\bar{t}$ are normalized to the peak regions, this
51 > fractional uncertainty is pretty much carried through all the way to
52 > the end.  There is also an uncertainty from the finite MC event counts
53 > in the $M_T$ peak regions.  This is also included, but it is smaller.
54 >
55 > \subsection{Uncertainty from the choice of $M_T$ peak region}
56 > IN 7 TEV DATA WE HAD SOME SHAPE DIFFERENCES IN THE MTRANS REGION THAT
57 > LED US TO CONSERVATIVELY INCLUDE THIS UNCERTAINTY.  WE NEED TO LOOK
58 > INTO THIS AGAIN
59 >
60 > \subsection{Uncertainty on the Wjets cross-section and the rare MC cross-sections}
61 > These are taken as 50\%, uncorrelated.  
62 > The primary effect is to introduce a 50\%
63 > uncertainty
64 > on the $W +$ jets and rare BG
65 > background predictions, respectively.  However they also
66 > have an effect on the other BGs via the $M_T$ peak normalization
67 > in a way that tends to reduce the uncertainty.  This is easy
68 > to understand: if the $W$ cross-section is increased by 50\%, then
69 > the $W$ background goes up.  But the number of $M_T$ peak events
70 > attributed to $t\bar{t}$ goes down, and since the $t\bar{t}$ BG is
71 > scaled to the number of $t\bar{t}$ events in the peak, the $t\bar{t}$
72 > BG goes down.  
73 >
74 > \subsection{Scale factors for the tail-to-peak ratios for lepton +
75 >  jets top and W events}
76 > These tail-to-peak ratios are described in Section~\ref{sec:ttp}.
77 > They are studied in CR1 and CR2.  The studies are described
78 > in Sections~\ref{sec:cr1} and~\ref{sec:cr2}), respectively, where
79 > we also give the uncertainty on the scale factors.
80 >
81 > \subsection{Uncertainty on extra jet radiation for dilepton
82 >  background}
83 > As discussed in Section~\ref{sec:jetmultiplicity}, the
84 > jet distribution in
85 > $t\bar{t} \to$
86 > dilepton MC is rescaled by the factors $K_3$ and $K_4$ to make
87 > it agree with the data.  The XX\% uncertainties on $K_3$ and $K_4$
88 > comes from data/MC statistics.  This  
89 > result directly in a XX\% uncertainty on the dilepton BG, which is by far
90 > the most important one.
91 >
92  
93   \subsection{Uncertainty on the \ttll\ Acceptance}
94  
# Line 60 | Line 144 | The variations considered are
144            alternative sample predictions are indicated by the
145            datapoints. The uncertainties on the alternative predictions
146            correspond to the uncorrelated statistical uncertainty from
147 <          the size of the alternative sample only.}
147 >          the size of the alternative sample only.
148 >        [TO BE UPDATED WITH THE LATEST SELECTION AND SFS]}
149        \end{center}
150      \end{figure}
151  
152 <
152 > \clearpage
153  
154   %
155   %
# Line 200 | Line 285 | The variations considered are
285   %\end{center}
286   %\end{table}
287  
288 + \subsection{Uncertainty from the isolated track veto}
289 + This is the uncertainty associated with how well the isolated track
290 + veto performance is modeled by the Monte Carlo.  This uncertainty
291 + only applies to the fraction of dilepton BG events that have
292 + a second e/$\mu$ or a one prong $\tau \to h$, with
293 + $P_T > 10$ GeV in $|\eta| < 2.4$.  This fraction is 1/3 (THIS WAS THE
294 + 7 TEV NUMBER, CHECK).  The uncertainty for these events
295 + is XX\% and is obtained from Tag and Probe studies of Section~\ref{sec:trkveto}
296  
297 < \subsection{Isolated Track Veto: Tag and Probe Studies}
297 > \subsubsection{Isolated Track Veto: Tag and Probe Studies}
298 > \label{sec:trkveto}
299  
300   [EVERYTHING IS 7TEV HERE, UPDATE WITH NEW RESULTS \\
301   ADD TABLE WITH FRACTION OF EVENTS THAT HAVE A TRUE ISOLATED TRACK]
# Line 327 | Line 421 | jet multiplicity requirements.}
421   \begin{tabular}{l|l|c|c|c|c|c}
422   \hline
423   \hline
424 < e + $\geq$0 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
424 >
425 > e + $\geq$0 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
426   \hline
427 <      data   &  0.088 $\pm$ 0.0003   &  0.030 $\pm$ 0.0002   &  0.013 $\pm$ 0.0001   &  0.007 $\pm$ 0.0001   &  0.005 $\pm$ 0.0001  \\
428 <        mc   &  0.087 $\pm$ 0.0001   &  0.030 $\pm$ 0.0001   &  0.014 $\pm$ 0.0001   &  0.008 $\pm$ 0.0000   &  0.005 $\pm$ 0.0000  \\
429 <   data/mc   &     1.01 $\pm$ 0.00   &     0.99 $\pm$ 0.01   &     0.97 $\pm$ 0.01   &     0.95 $\pm$ 0.01   &     0.93 $\pm$ 0.01  \\
427 >      data   &  0.097 $\pm$ 0.0002   &  0.035 $\pm$ 0.0001   &  0.016 $\pm$ 0.0001   &  0.009 $\pm$ 0.0001   &  0.005 $\pm$ 0.0000  \\
428 >        mc   &  0.096 $\pm$ 0.0005   &  0.034 $\pm$ 0.0003   &  0.015 $\pm$ 0.0002   &  0.008 $\pm$ 0.0002   &  0.005 $\pm$ 0.0001  \\
429 >   data/mc   &     1.01 $\pm$ 0.01   &     1.04 $\pm$ 0.01   &     1.06 $\pm$ 0.02   &     1.04 $\pm$ 0.02   &     1.01 $\pm$ 0.02  \\
430   \hline
431   \hline
432 < $\mu$ + $\geq$0 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
432 > $\mu$ + $\geq$0 jets          &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
433   \hline
434 <      data   &  0.087 $\pm$ 0.0002   &  0.031 $\pm$ 0.0001   &  0.015 $\pm$ 0.0001   &  0.008 $\pm$ 0.0001   &  0.005 $\pm$ 0.0001  \\
435 <        mc   &  0.085 $\pm$ 0.0001   &  0.030 $\pm$ 0.0001   &  0.014 $\pm$ 0.0000   &  0.008 $\pm$ 0.0000   &  0.005 $\pm$ 0.0000  \\
436 <   data/mc   &     1.02 $\pm$ 0.00   &     1.06 $\pm$ 0.00   &     1.06 $\pm$ 0.01   &     1.03 $\pm$ 0.01   &     1.02 $\pm$ 0.01  \\
434 >      data   &  0.094 $\pm$ 0.0001   &  0.034 $\pm$ 0.0001   &  0.016 $\pm$ 0.0001   &  0.009 $\pm$ 0.0000   &  0.006 $\pm$ 0.0000  \\
435 >        mc   &  0.093 $\pm$ 0.0004   &  0.033 $\pm$ 0.0003   &  0.015 $\pm$ 0.0002   &  0.008 $\pm$ 0.0001   &  0.005 $\pm$ 0.0001  \\
436 >   data/mc   &     1.01 $\pm$ 0.00   &     1.04 $\pm$ 0.01   &     1.05 $\pm$ 0.01   &     1.06 $\pm$ 0.02   &     1.07 $\pm$ 0.02  \\
437   \hline
343 \hline
344 e + $\geq$1 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
438   \hline
439 <      data   &  0.099 $\pm$ 0.0008   &  0.038 $\pm$ 0.0005   &  0.019 $\pm$ 0.0004   &  0.011 $\pm$ 0.0003   &  0.008 $\pm$ 0.0002  \\
347 <        mc   &  0.100 $\pm$ 0.0004   &  0.038 $\pm$ 0.0003   &  0.019 $\pm$ 0.0002   &  0.012 $\pm$ 0.0002   &  0.008 $\pm$ 0.0001  \\
348 <   data/mc   &     0.99 $\pm$ 0.01   &     1.00 $\pm$ 0.02   &     0.99 $\pm$ 0.02   &     0.98 $\pm$ 0.03   &     0.97 $\pm$ 0.03  \\
439 > e + $\geq$1 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
440   \hline
441 +      data   &  0.109 $\pm$ 0.0005   &  0.043 $\pm$ 0.0003   &  0.022 $\pm$ 0.0002   &  0.013 $\pm$ 0.0002   &  0.009 $\pm$ 0.0002  \\
442 +        mc   &  0.109 $\pm$ 0.0014   &  0.042 $\pm$ 0.0009   &  0.020 $\pm$ 0.0006   &  0.012 $\pm$ 0.0005   &  0.008 $\pm$ 0.0004  \\
443 +   data/mc   &     1.00 $\pm$ 0.01   &     1.04 $\pm$ 0.02   &     1.08 $\pm$ 0.04   &     1.13 $\pm$ 0.05   &     1.13 $\pm$ 0.06  \\
444   \hline
351 $\mu$ + $\geq$1 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
445   \hline
446 <      data   &  0.100 $\pm$ 0.0006   &  0.041 $\pm$ 0.0004   &  0.022 $\pm$ 0.0003   &  0.014 $\pm$ 0.0002   &  0.010 $\pm$ 0.0002  \\
354 <        mc   &  0.099 $\pm$ 0.0004   &  0.039 $\pm$ 0.0002   &  0.020 $\pm$ 0.0002   &  0.013 $\pm$ 0.0001   &  0.009 $\pm$ 0.0001  \\
355 <   data/mc   &     1.01 $\pm$ 0.01   &     1.05 $\pm$ 0.01   &     1.05 $\pm$ 0.02   &     1.06 $\pm$ 0.02   &     1.06 $\pm$ 0.03  \\
446 > $\mu$ + $\geq$1 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
447   \hline
448 +      data   &  0.106 $\pm$ 0.0004   &  0.043 $\pm$ 0.0003   &  0.023 $\pm$ 0.0002   &  0.014 $\pm$ 0.0002   &  0.010 $\pm$ 0.0001  \\
449 +        mc   &  0.107 $\pm$ 0.0012   &  0.042 $\pm$ 0.0008   &  0.021 $\pm$ 0.0005   &  0.013 $\pm$ 0.0004   &  0.009 $\pm$ 0.0004  \\
450 +   data/mc   &     1.00 $\pm$ 0.01   &     1.03 $\pm$ 0.02   &     1.07 $\pm$ 0.03   &     1.12 $\pm$ 0.04   &     1.17 $\pm$ 0.05  \\
451   \hline
358 e + $\geq$2 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
452   \hline
453 <      data   &  0.105 $\pm$ 0.0020   &  0.042 $\pm$ 0.0013   &  0.021 $\pm$ 0.0009   &  0.013 $\pm$ 0.0007   &  0.009 $\pm$ 0.0006  \\
361 <        mc   &  0.109 $\pm$ 0.0011   &  0.043 $\pm$ 0.0007   &  0.021 $\pm$ 0.0005   &  0.013 $\pm$ 0.0004   &  0.009 $\pm$ 0.0003  \\
362 <   data/mc   &     0.96 $\pm$ 0.02   &     0.97 $\pm$ 0.03   &     1.00 $\pm$ 0.05   &     1.01 $\pm$ 0.06   &     0.97 $\pm$ 0.08  \\
453 > e + $\geq$2 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
454   \hline
455 +      data   &  0.115 $\pm$ 0.0012   &  0.049 $\pm$ 0.0008   &  0.026 $\pm$ 0.0006   &  0.017 $\pm$ 0.0005   &  0.012 $\pm$ 0.0004  \\
456 +        mc   &  0.114 $\pm$ 0.0032   &  0.046 $\pm$ 0.0021   &  0.023 $\pm$ 0.0015   &  0.015 $\pm$ 0.0012   &  0.010 $\pm$ 0.0010  \\
457 +   data/mc   &     1.01 $\pm$ 0.03   &     1.09 $\pm$ 0.05   &     1.13 $\pm$ 0.08   &     1.09 $\pm$ 0.09   &     1.14 $\pm$ 0.12  \\
458   \hline
365 $\mu$ + $\geq$2 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
459   \hline
460 <      data   &  0.106 $\pm$ 0.0016   &  0.045 $\pm$ 0.0011   &  0.025 $\pm$ 0.0008   &  0.016 $\pm$ 0.0007   &  0.012 $\pm$ 0.0006  \\
368 <        mc   &  0.108 $\pm$ 0.0009   &  0.044 $\pm$ 0.0006   &  0.024 $\pm$ 0.0004   &  0.016 $\pm$ 0.0004   &  0.011 $\pm$ 0.0003  \\
369 <   data/mc   &     0.98 $\pm$ 0.02   &     1.04 $\pm$ 0.03   &     1.04 $\pm$ 0.04   &     1.04 $\pm$ 0.05   &     1.06 $\pm$ 0.06  \\
460 > $\mu$ + $\geq$2 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
461   \hline
462 +      data   &  0.111 $\pm$ 0.0010   &  0.048 $\pm$ 0.0007   &  0.026 $\pm$ 0.0005   &  0.018 $\pm$ 0.0004   &  0.013 $\pm$ 0.0004  \\
463 +        mc   &  0.114 $\pm$ 0.0027   &  0.046 $\pm$ 0.0018   &  0.024 $\pm$ 0.0013   &  0.014 $\pm$ 0.0010   &  0.010 $\pm$ 0.0009  \\
464 +   data/mc   &     0.98 $\pm$ 0.03   &     1.04 $\pm$ 0.04   &     1.12 $\pm$ 0.07   &     1.26 $\pm$ 0.10   &     1.30 $\pm$ 0.12  \\
465   \hline
372 e + $\geq$3 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
466   \hline
467 <      data   &  0.117 $\pm$ 0.0055   &  0.051 $\pm$ 0.0038   &  0.029 $\pm$ 0.0029   &  0.018 $\pm$ 0.0023   &  0.012 $\pm$ 0.0019  \\
375 <        mc   &  0.120 $\pm$ 0.0031   &  0.052 $\pm$ 0.0021   &  0.027 $\pm$ 0.0015   &  0.018 $\pm$ 0.0012   &  0.013 $\pm$ 0.0011  \\
376 <   data/mc   &     0.97 $\pm$ 0.05   &     0.99 $\pm$ 0.08   &     1.10 $\pm$ 0.13   &     1.03 $\pm$ 0.15   &     0.91 $\pm$ 0.16  \\
467 > e + $\geq$3 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
468   \hline
469 +      data   &  0.122 $\pm$ 0.0030   &  0.058 $\pm$ 0.0022   &  0.034 $\pm$ 0.0017   &  0.023 $\pm$ 0.0014   &  0.017 $\pm$ 0.0012  \\
470 +        mc   &  0.125 $\pm$ 0.0080   &  0.060 $\pm$ 0.0057   &  0.032 $\pm$ 0.0043   &  0.023 $\pm$ 0.0036   &  0.017 $\pm$ 0.0031  \\
471 +   data/mc   &     0.98 $\pm$ 0.07   &     0.97 $\pm$ 0.10   &     1.06 $\pm$ 0.15   &     1.01 $\pm$ 0.17   &     1.01 $\pm$ 0.20  \\
472   \hline
379 $\mu$ + $\geq$3 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
473   \hline
474 <      data   &  0.111 $\pm$ 0.0044   &  0.050 $\pm$ 0.0030   &  0.029 $\pm$ 0.0024   &  0.019 $\pm$ 0.0019   &  0.014 $\pm$ 0.0017  \\
382 <        mc   &  0.115 $\pm$ 0.0025   &  0.051 $\pm$ 0.0017   &  0.030 $\pm$ 0.0013   &  0.020 $\pm$ 0.0011   &  0.015 $\pm$ 0.0009  \\
383 <   data/mc   &     0.97 $\pm$ 0.04   &     0.97 $\pm$ 0.07   &     0.95 $\pm$ 0.09   &     0.97 $\pm$ 0.11   &     0.99 $\pm$ 0.13  \\
474 > $\mu$ + $\geq$3 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
475   \hline
476 +      data   &  0.121 $\pm$ 0.0025   &  0.055 $\pm$ 0.0018   &  0.033 $\pm$ 0.0014   &  0.022 $\pm$ 0.0011   &  0.017 $\pm$ 0.0010  \\
477 +        mc   &  0.125 $\pm$ 0.0070   &  0.053 $\pm$ 0.0047   &  0.027 $\pm$ 0.0035   &  0.018 $\pm$ 0.0028   &  0.013 $\pm$ 0.0024  \\
478 +   data/mc   &     0.97 $\pm$ 0.06   &     1.05 $\pm$ 0.10   &     1.20 $\pm$ 0.16   &     1.19 $\pm$ 0.20   &     1.28 $\pm$ 0.25  \\
479   \hline
386 e + $\geq$4 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
480   \hline
481 <      data   &  0.113 $\pm$ 0.0148   &  0.048 $\pm$ 0.0100   &  0.033 $\pm$ 0.0083   &  0.020 $\pm$ 0.0065   &  0.017 $\pm$ 0.0062  \\
389 <        mc   &  0.146 $\pm$ 0.0092   &  0.064 $\pm$ 0.0064   &  0.034 $\pm$ 0.0048   &  0.024 $\pm$ 0.0040   &  0.021 $\pm$ 0.0037  \\
390 <   data/mc   &     0.78 $\pm$ 0.11   &     0.74 $\pm$ 0.17   &     0.96 $\pm$ 0.28   &     0.82 $\pm$ 0.30   &     0.85 $\pm$ 0.34  \\
481 > e + $\geq$4 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
482   \hline
483 +      data   &  0.130 $\pm$ 0.0079   &  0.069 $\pm$ 0.0060   &  0.044 $\pm$ 0.0048   &  0.031 $\pm$ 0.0041   &  0.021 $\pm$ 0.0034  \\
484 +        mc   &  0.136 $\pm$ 0.0219   &  0.045 $\pm$ 0.0134   &  0.027 $\pm$ 0.0108   &  0.022 $\pm$ 0.0093   &  0.016 $\pm$ 0.0084  \\
485 +   data/mc   &     0.96 $\pm$ 0.17   &     1.55 $\pm$ 0.48   &     1.62 $\pm$ 0.67   &     1.41 $\pm$ 0.63   &     1.28 $\pm$ 0.68  \\
486   \hline
393 $\mu$ + $\geq$4 jets            &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
487   \hline
488 <      data   &  0.130 $\pm$ 0.0128   &  0.052 $\pm$ 0.0085   &  0.028 $\pm$ 0.0063   &  0.019 $\pm$ 0.0052   &  0.019 $\pm$ 0.0052  \\
396 <        mc   &  0.105 $\pm$ 0.0064   &  0.045 $\pm$ 0.0043   &  0.027 $\pm$ 0.0034   &  0.019 $\pm$ 0.0028   &  0.014 $\pm$ 0.0024  \\
397 <   data/mc   &     1.23 $\pm$ 0.14   &     1.18 $\pm$ 0.22   &     1.03 $\pm$ 0.27   &     1.01 $\pm$ 0.32   &     1.37 $\pm$ 0.45  \\
488 > $\mu$ + $\geq$4 jets             &           $>$ 1 GeV   &           $>$ 2 GeV   &           $>$ 3 GeV   &           $>$ 4 GeV   &           $>$ 5 GeV  \\
489   \hline
490 +      data   &  0.136 $\pm$ 0.0067   &  0.064 $\pm$ 0.0048   &  0.041 $\pm$ 0.0039   &  0.029 $\pm$ 0.0033   &  0.024 $\pm$ 0.0030  \\
491 +        mc   &  0.127 $\pm$ 0.0187   &  0.062 $\pm$ 0.0134   &  0.042 $\pm$ 0.0113   &  0.034 $\pm$ 0.0104   &  0.028 $\pm$ 0.0095  \\
492 +   data/mc   &     1.07 $\pm$ 0.17   &     1.04 $\pm$ 0.24   &     0.98 $\pm$ 0.28   &     0.85 $\pm$ 0.28   &     0.87 $\pm$ 0.32  \\
493   \hline
494  
495 +
496   \end{tabular}
497   \end{center}
498   \end{table}
# Line 483 | Line 578 | Why not measure $\epsilon_{fake}$ in the
578   %      \end{center}
579   %\end{figure}
580  
581 + \subsection{Summary of uncertainties}
582 + \label{sec:bgunc-bottomline}.
583 +
584 + THIS NEEDS TO BE WRITTEN

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