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Update TLA Pile-up residual calibration

Jonathan Bossio requested to merge jbossios/athena:21.2-JetCalibTools-TLAPileupResidual into 21.2

Changes:

  • Use JetPileupScaleMomentum to calculate nJet (it has been shown that is more robust in the different MC16 campaigns)
  • Decorate jets with pt after jet pile-up area-based correction (which for HLT jets is pt at JetPileupScaleMomentum since no pile-up residual calibration is applied to online jets) when requested -- This is needed to calculate nJet elsewhere when an offline pile-up residual calibration is applied and hence JetPileupScaleMomentum is overwritten.

Note:

  • nJet-based pile-up residual correction is only used for the TLA analysis and HLT jets

Also, remove commented code

Tagging @mtoscani and @ckaldero to let them know.

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