Store energy scale and resolution uncertainties for electrons and photons?

[nurfikri89]

This issue is related to the hypernews thread [1] on retrieving and applying energy scale and resolution uncertainties for electrons and photons at the level of nanoAOD post-processing in nanoAOD-tools. In the thread, it was pointed out [2] that

these scale systematics are applied on the ecal energy only (uncorrected for scales but corrected for regression due to loss etc) and then further combined an E-p combination is performed to get the final post scale-smearing corrected p4.

Should we identify these missing variables and add them into nanoAODs? An alternative suggestion is to directly store the scaled (up & down) and smeared energy I suppose this involves adding the following floats for electrons and photons: userFloat("energyScaleUp") userFloat("energyScaleDown") userFloat("energySigmaUp")

Kind regards, Fikri

[1] https://hypernews.cern.ch/HyperNews/CMS/get/physTools/3713.html [2] https://hypernews.cern.ch/HyperNews/CMS/get/physTools/3713/1/1/1/2/1.html

[mariadalfonso]

this is being done in cms-sw/32966

[mariadalfonso]

closing this since has been handled