Measurement of the Z boson cross-section in - Harvard University ...

Chapter 6: Event Selection 170
Entries
10
10
10
7
10
6
10
5
10
4
10
3
10
2
10
1
-1
-2
-1
∫L
dt = 331 nb
Data 2010 (
Z → µ µ
bb cc
W → µ ν
Z → τ
tt
s=7
TeV)
0 2 4 6 8 10
Pixel hits/track
Figure 6.5: Pixel hits on inner detector tracks matched to muon spectrometer tracks
for signal Monte Carlo, background Monte Carlo and data after event preselection.
The total Monte Carlo event number has been normalized to the number of events in
data.