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Njet unfolding

Njet unfolding. Zhijun Liang. Introduction. Njet unfolding share the same unfolding ntuples setup background normalization Additional systematics on the shape. W+jet shape systematics. Shape systematics are taken from control regions in data

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Njet unfolding

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Presentation Transcript

  1. Njet unfolding Zhijun Liang

  2. Introduction • Njet unfolding share the same • unfolding ntuples setup • background normalization • Additional systematics on the shape.

  3. W+jet shape systematics • Shape systematics are taken from control regions in data • Compare W+jet shape with different anti-tight definition. Feng’s anti tight defintion Zhijun’s anti tight defintion Anti tight in 1fb-1 analysis Njet

  4. WgammaNjet, pT>15GeV

  5. Signal uncertainty Main systematics is photon ID efficiency uncertainty and JES/JER systematics Larger uncertainty in overflow bin

  6. WgammaNjet, pT>60GeV

  7. Unfolding on Wgamma mass

  8. Wgamma mass unfolding MC closeure test

  9. Wgamma mass unfolding signal systematics

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