Fix PF Met from re-miniAOD about pandatree

[sidnarayanan]

Private fix doesn't work perfectly since PF and SC matching doesn't seem to always work. Let's do it properly:

https://twiki.cern.ch/twiki/bin/view/CMSPublic/ReMiniAOD03Feb2017Notes#MET_Recipes

[sidnarayanan]

One thing to note here: the PF candidates from the fix have to be fed back into puppi and fatjets

[yiiyama]

If you are talking about applying the fix on PF candidates from the bad muon removal to MC, it is propagated everywhere.
https://github.com/PandaPhysics/PandaProd/blob/master/Producer/cfg/prod.py#L369-L372
These lines go into the analyzer and producer configs and replace packedPFCandidates with cleanMuonsPFCandidates.

[sidnarayanan]

No, I was referring to propagating the EG correction back to PF level. Related: right now we set electron pfPt by looking for a PF cand that is an electron, but sometimes it's a photon at pf level (and vice versa). Could we make it an OR of the PF IDs?

[yiiyama]

Yes, that came up with Brandon too. One of my PRs do that - I forgot which..

[yiiyama]

But I thought we don't apply EG correction to PF candidates? CMSSW recipe is to correct just the MET, no?

[yiiyama]

PandaPhysics/PandaProd#6

This does not include fix on PF candidates though, if we want to do that.

[sidnarayanan]

Sorry, that was my mistake. We indeed don't want to propagate things to PF candidate level. PandaPhysics/PandaProd#6 looks good to me

[yiiyama]

Sid is seeing discrepancies between nero and panda.