Muon Tracking Slides 9-May-2001
I ran FakeEv under cdf2sim
generating 2000 positive and 2000 negative muons with from 30 to 37
degree range in theta, from 2 to 30 GeV pt, and from 20 to 40 degrees
in phi. Of the negative muons 1802 had an IMUS stub (inefficiency is
understood) and of those 1326 were linked with a track. Of the positive
muons 1768 had an IMUS stub and of those 1314 were linked with a track.
This gives an IMUS stub a 74% chance of linking.
There is a dependence on initial track
eta. Tracks were generated uniformly in eta from .8 to 1.6.
I need to check to see if all the calorimeters are in place here. The
Pt seems to quit at about 1.5 GeV, dropping off starting at about 1.8 GeV.
With better statistics: 5000 muons of each type gives 4377 negative stubs
and 3222 satisfactory links, and 4384 positive stubs with 3213 satisfactory
links. 73.6 +- 1.7% for negative, 73.3 +- 1.7% for positive muons linking
stubs with COT tracks. This means we lose about 27% of the COT tracks in
- Deviations in rphi for positive and negative
muons, alone and versus the original pt.
- Fraction of links surviving as a
function of the cut on the mismeasurement of the track Pt in the COT.
This is relative to the total number of links, not the total number of tracks.
Both positive and negative are shown: The positive is the slightly
- Mismeasurement of the Pt in the COT versus
the Pt. 'OPT' is for O-riginal PT.
- Turn-on curve as a function of Pt for
low Pt postive muons (generated from Pt=1 to 5).
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