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Fake Jet Rejection Analysis with Sum Jt Calculated for AvgCellBkgrSubtr

Explore fake jet rejection methods with Sum Jt calculations for background subtraction. Analyze efficiency, rates, and comparison between truth and found jets.

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Fake Jet Rejection Analysis with Sum Jt Calculated for AvgCellBkgrSubtr

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  1. Fake Jet Rejection: Sum Jt • The quantity: • Calculated for AvgCellBkgrSubtr jets. • Duplicate jets removed at the beginning. • “Data” sets • Hijing Hardcut b=2 • Maximum Hijing particle within R = 0.4 < 30 GeV • Total Hijing particle pt (pt > 2.5 GeV) < 30 GeV • Pythia dijet events merged with Hijing b=2 hardcut • J2, J3, and J4 • All plots update from 1 week ago • Re-reconstructed, re-analyzed. Cole -- Fake Jet Rejection w/ Sum Jt

  2. SumJt vs Jet Et: Background • Purple points, line show profile and linear fit. Cole -- Fake Jet Rejection w/ Sum Jt

  3. SumJt corrected vs Jet Et: Background • Subtracted off linear fit from previous slide Cole -- Fake Jet Rejection w/ Sum Jt

  4. SumJt corrected: Background • Summed over all jet Et (background) Cole -- Fake Jet Rejection w/ Sum Jt

  5. Background Rejection “Efficiency” • Good rejection at lower Et, decreasing with Et Cole -- Fake Jet Rejection w/ Sum Jt

  6. J2, J3, J4 Combined Jet Efficiency Cole -- Fake Jet Rejection w/ Sum Jt

  7. Fake Rate After Rejection Cole -- Fake Jet Rejection w/ Sum Jt

  8. Rate Comparison w/True Jets Cole -- Fake Jet Rejection w/ Sum Jt

  9. Merged, Real (found) Jets Cole -- Fake Jet Rejection w/ Sum Jt

  10. Merged Truth Jets Cole -- Fake Jet Rejection w/ Sum Jt

  11. Truth vs Found Comparison Truth Reconstructed Cole -- Fake Jet Rejection w/ Sum Jt

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