Cumulants Math

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Cumulants Math
Event loop
For each event, loop over hits and calculate a
generating function
Calculate the statistical average of G
Cumulants generating function
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13 sub-detectors / MCTrack analysis
0 1 2 3 4 5 6 7 8
9 10 11 12
Each sub-detector works independently
Detector ID
Run 6110, 8 flat flow, 0ltVzlt4, 10K events, PMC
primary tracks
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From the silicon hits
primary hits
primary hits
all hits
all hits
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After full simulation, using TPhMultHits

• Using TPhMultHits with SpecVertex
• Poisson occupancy correction not yet done

Very similar shape to our very first plot of
SymOct Flat MC analysis
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summary

• We understand better the cumulants method
• Amazingly, no need to fill Vtx, Spec holes. It
  works fine!
• Cumulants is not a magic box, it still sees all
  the pixel detector effects.
• Needs Poisson occupancy correction.
• Ring signals are suppressed by backgrounds hits.
• Hope to show Data soon