Systematic error from bg subtraction

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• Systematic error from bg subtraction
• Tuning of MC matching
• Include Toms mom_buner

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Bg subtraction estimate
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Tune the matching distribution in MC

• Apply the same tuning as sasha did for data

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Zed dependence of pc3sdz

• There is a systematic shift of pc3sdz match at
  large zed
• However no need to correct if one does
  abs(zed)lt40cm cut

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Ratio of corrected yield for different matching
window

• Vary the matching window in data/MC
  simultaneously
• From here, the error on matching systematic is
  lt5

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2.5 s zedlt40cm
Black before burn Red after burn
West
West -
east
east -
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Red/black
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Plus minus
west
east
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• Change p scale factor to 1.029-anne juse
  rungt69000
• Evaluate p scale, dp/p effect axel
• Ratio of corrected e/w anne
• Evaluate syst for z dependent p scale
  anujbabara
• Width of m2 vs run -anuj
• Redo resolution study for - together anuj
• Complete study of /- split and p vs phi - tom