The following plots were generated using a root script borrowed from the Harvard SecVtx group. The script was modified for JetProb:

• Primary vertex taken from PrimVtx rather than SecVtx
• Secondary vertex removed
• Tracks taken from JetProb tracks
• Starting point of tracks is calculated as follows:
  • An imaginary circle of radius |d0| is drawn around the primary vertex
  • Track phi gives direction of track (assumed straight at this scale)
  • Find the two points on circle tangent to track direction
  • Divide circle in a forward and a backward hemisphere according to jet direction
  • If signD0 is +, choose tangent point on forward hemisphere
  • If signD0 is -, choose tangent point on backward hemisphere
• For tagged jets, positive impact parameter tracks are drawn red
• ALL other (good r-phi) tracks inside jet are drawn blue
• Added hashed cones representing tight jets in the event
• Missing Et direction is the dotted arrow (no change in script)
• Electron tracks are magenta (no change in script)
• Muon tracks are green (no change in script)

Click on an image to get the corresponding eps file
(turn OFF antialias under "state" to see the jet cones)

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Data: bhel0d and bhmu0d

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MC: ttopel PYTHIA ttbar Mtop=178 GeV
(took 30 MC events just to compare to data events)