The D

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The DØ Detector at Fermilab
Muon Detector
Tracking Silicon detector Fiber Tracker 2T
magnetic field
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Event Selection

• Trigger on events with one muon and one central
  track with PT gt 10 GeV.

• Require an isolated muon of good quality, matched
  to a well reconstructed central track with PT gt
  20 GeV.
• ET gt 20 GeV.
• Veto on cosmic ray muons.