cms-nanoAOD/nanoAOD-tools

MET and (Fat)Jet JME uncertaintes in data with jetmetHelperRun2.py

bartokm opened this issue · 1 comments

When using the createJMECorrector function with data there are no Up/Down fluctuation variables saved in the tree. I see in jetmetUncertainties.py that it is saved only when isData=False. The JES uncertainties for jets, and the JES and UES uncertainties for MET should be saved for data as well. If not, why, and what is the recommended way for calculating them?

fgolf commented

Variations (for evaluation of uncertainties) are only performed for simulation, not data. Closing.