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Cumulants Math

Cumulants Math. Event loop. For each event, loop over hits and calculate a generating function. Calculate the statistical average of G. Cumulants generating function. 13 sub-detectors / MCTrack analysis. 0 1 2 3 4 5 6 7 8 9 10 11 12.

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Cumulants Math

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  1. Cumulants Math Event loop For each event, loop over hits and calculate a generating function Calculate the statistical average of G Cumulants generating function PHOBOS Collaboration meeting (Inkyu Park)

  2. 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, 0<Vz<4, 10K events, PMC primary tracks PHOBOS Collaboration meeting (Inkyu Park)

  3. Poisson Occupancy correction necessary Backgrounds Need MC estimation From the silicon hits primary hits primary hits all hits all hits PHOBOS Collaboration meeting (Inkyu Park)

  4. 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 PHOBOS Collaboration meeting (Inkyu Park)

  5. 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 PHOBOS Collaboration meeting (Inkyu Park)

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