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Extend the functionality of the PU residual calibs

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

Summary: The changes implemented here are needed to derive:

  • Pile-up residual calibrations for HLT jets using FTK information.
  • Pile-up residual calibrations for HLT jets for the TLA analysis.

Details of the new features:

  • It is now possible to apply the pileup residual calibrations without applying the jet area-based calibration. This is needed for HLT jets where it is not possible to re-apply the jet area-based calibrations since the online rho is not stored in the xAODs. With this, we can pick-up the jets corrected by the jet area-based calibration and apply on top the residual calibrations. This was implemented by @mdaneri.

  • It is possible to use nJet (number of jets above a given threshold) instead of NPV in the pile-up residual calibrations. This is needed for the TLA analysis. This was implemented by @ckaldero.

  • Sequential residual: It is now possible to apply first the mu-based calibration and then NPV- or nJet-based calibration. It is also possible to apply only the mu-, NPV- or nJet-based calibrations, which is helpful for deriving the sequential residual calibrations.

  • It is possible to choose the vertex container to be used to calculate NPV.

Tagging @sschramm to let him know.

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