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Some Thoughts on Systematic Uncertainties in the Determination of the Jet Energy Scale

Some Thoughts on Systematic Uncertainties in the Determination of the Jet Energy Scale. Calorimeter response Model (e.g. QGSP vs EMV). Jet Composition And Fragmentation Model. Jet Location. Generator/Fragmentation ATL-COM-PHYS-2009-042 (Sergei Chekanov).

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Some Thoughts on Systematic Uncertainties in the Determination of the Jet Energy Scale

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  1. Some Thoughts on Systematic Uncertainties in the Determination of the Jet Energy Scale Calorimeter response Model (e.g. QGSP vs EMV) Jet Composition And Fragmentation Model Jet Location

  2. Generator/Fragmentation ATL-COM-PHYS-2009-042 (Sergei Chekanov) Uncertainties on backgrounds to prompt g

  3. Other Contributors: Anything we use to correct the response • GEANT4 model for energy deposition • Charged particle fraction • EM fraction by depth • Numerical method (inversion) • Jet Isolation cut • Cut on additional jets (ISR/FSR model) • Out-of-Cone energy (offset not a scale) • Underlying event energy (offset not a scale, and process dependent) • In-time pileup • Bunch structure • Luminosity dependence within runs

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