CorrT1METJet should have pt and rawFactor instead of rawPt

[jrueb]

Currently there is CorrT1METJet_rawPt but no CorrT1METJet_pt and CorrT1METJet_rawFactor (defined the same way as Jet_pt and Jet_rawFactor). I think there should rather be CorrT1METJet_pt and CorrT1METJet_rawFactor.

Please let me know if I'm misunderstanding something or there is an intention behind this choice other than the space reduction, this would probably help me improving my code. But with this choice right now I see two major downsides:

• When applying type-1 MET corrections because of varying jet uncertainties, one depends on the entire JEC computation (FactorizedJetCorrector and JetCorrectionUncertainty). With rawFactor and pt, FactorizedJetCorrector would become unnecessary.
• When applying different JEC than what is already applied in NanoAOD, the difference between the NanoAOD JEC of the jets in CorrT1METJet and the new JEC is unknown. However, this difference is needed in order to propagate the change to MET. With pt and rawFactor it would be trivial to compute.

What do you think?

[mariadalfonso]

@camclean @kirschen @lathomas please comment

[vlimant]

dully noted