-- EstebanFullana - 01 Jun 2009

Thursday 25th June 2009, 9:30-11:00: Jet energy scale - Part I : Introduction + Corrections I

Convener: Esteban Fullana Torregrosa (ANL) , Mario Martinez-Perez (IFAE-Barcelona), Ariel Schwartzman (SLAC)

Overview of the calibration schemes

Jet corrections: Offset

  • Tower based method
  • Random cone method
  • Object based method
  • Jet areas method
  • Comparison of techniques and systematic uncertainties

Thursday 25th June 2009, 11:00-13:00: Jet energy scale - Part II : Corrections II

Convener: Esteban Fullana Torregrosa (ANL), Mario Martinez-Perez (IFAE-Barcelona), Ariel Schwartzman (SLAC)

Jet corrections: Relative Eta correction across the calorimeter

  • Description of technique (traditional, 2D), event selection, trigger
  • Performance at the EM scale, after cell-density, after local hadron
  • Validation + pile-up effect
  • Systematic uncertainties

Determination of Jet Energy Resolution

  • Bisector Method in Dijets (Data and MC comparison)

Jet corrections: Absolute response

  • Corrections based on MC
    • Simple pT-Eta correction
    • Layer energy weighting
    • Jet-moment corrections
  • Corrections based on Data
    • Z/gamma+jet balance
    • Missing pT fraction (MPF)
    • Di-muons
  • Extrapolation to high Pt

Thursday 25th June 2009, 14:30-16:00: Jet energy scale - Part III : Corrections III + Closure tests

Convener: Esteban Fullana Torregrosa (ANL), Mario Martinez-Perez (IFAE-Barcelona), Ariel Schwartzman (SLAC)

Jet corrections: Out-of-cone corrections

  • EM scale, H1 and LC jets
  • Systematic uncertainties
  • Etmiss consistency

Jet corrections: configurations with close by jets

  • Present status and future strategy

Jet corrections: Order of corrections???

Closure tests

  • W-mass constrained in top pairs
  • gamma/Z-balance
  • Drell-Yan pairs
  • Jet shapes : Data-MC comparison

Thursday 25th June 2009, 16:30-18:00: Jet energy scale - Part IV : Resolution improvements + systematic uncertainty

Convener: Esteban Fullana Torregrosa (ANL), Mario Martinez-Perez (IFAE-Barcelona), Ariel Schwartzman (SLAC)

Jet energy resolution improvement after calibration

  • Jet vertex fraction event-by-event pile-up correction
  • Layer energy fraction corrections
  • Track-based response corrections

Methodology to establish a systematic jet energy scale uncertainty

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Topic revision: r2 - 2009-06-01 - EstebanFullana
 
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