Store energy fractions of gammas in packedPFCandidates (10_6_X)

[mbluj]

PR description:

This PR adds energy fractions of PFGammas (PFCandidates with pdgId==22) to packedPFCandidate collection in miniAOD. This completes information needed to build tau quantities based on energy fractions of its constituents.

The addition is triggered only for UL re-miniAOD by run2_miniAOD_UL modifier.

Size increase estimated in the original PR with ttbar sample with PU is as follows:

• total size: +0.14% or +107 bytes/event,
• packedPFCandidates: +0.3%.

This PR is a partial backport of #30571. Changes other than energy fraction of PFGammas contained in the original PR can be a subject of another backport PR to 10_6_X series, but as they are not affecting event content will be postponed for more peaceful time.

PR validation:

Tested with standard miniAOD workflow with run2_miniAOD_UL modifier.

if this PR is a backport please specify the original PR and why you need to backport that PR:

It is a partial backport of #30571, needed for UL re-miniAOD production as agreed with XPOG.

[cmsbuild]

A new Pull Request was created by @mbluj for CMSSW_10_6_X.

It involves the following packages:

PhysicsTools/PatAlgos

@perrotta, @jpata, @cmsbuild, @santocch, @slava77 can you please review it and eventually sign? Thanks.
@rappoccio, @gouskos, @JyothsnaKomaragiri, @ahinzmann, @smoortga, @schoef, @mmarionncern, @jdamgov, @jdolen, @nhanvtran, @gkasieczka, @clelange, @emilbols, @hatakeyamak, @ferencek, @gpetruc, @andrzejnovak, @mariadalfonso, @seemasharmafnal this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

• CMSSW_10_6_X_2020-11-27-1100/slc7_amd64_gcc700: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/11105/console Started: 2020/11/27 15:41

[cmsbuild]

+1
Tested at: 94e12aa
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2da63a/11105/summary.html
CMSSW: CMSSW_10_6_X_2020-11-27-1100
SCRAM_ARCH: slc7_amd64_gcc700

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2da63a/11105/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 1 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 3214712
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3214377
• DQMHistoTests: Total skipped: 334
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 140 log files, 26 edm output root files, 34 DQM output files

[santocch]

+1

[slava77]

+1

for #32314 94e12aa

• code changes are in line with the PR description.
  • The changes in this PR are partly from Updates for TauReco at miniAOD #30571 (parts of 0d4f18f and 54785f1).
  • In addition, a new parameter storePfGammaEnFractions is added only for 10_6_X and it's enabled only with run2_miniAOD_UL. I do not see a need for this parameter to be in the master branch.
• jenkins tests pass and comparisons with the baseline show a change in the caloFraction in the UL re-miniAOD workflow 136.88811, as expected more non-zero values are now filled
  

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_10_6_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_11_3_X is complete. This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1