nbOfDaughters_electrons_correction_Histos_90X_V2

[archiron]

It is a modification of the validation code (ElectronMcMiniAODSignalValidator.cc & ElectronMcSignalValidator.cc) in order to avoid nbOfDaughters >2 (i.e. 3 or 4). This lead to difference in the entries for miniAOD if nbOfDaughters is >2.

in addition, a few files were cleaned to take into account the SingleElectronPtxx with SingleElectronPtxx_UP15 with xx = 10, 35, 1000.

@beaudett @fcouderc

[cmsbuild]

A new Pull Request was created by @archiron (Chiron) for CMSSW_9_0_X.

It involves the following packages:

Validation/RecoEgamma

@cmsbuild, @dmitrijus, @vanbesien, @davidlange6 can you please review it and eventually sign? Thanks.
@davidlange6, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[beaudett]

Hi,
adding some information: this PR solves a long standing issue that we had in the miniAOD validation: the number of reco-electrons matched to gen electrons was sometimes different by 1 or 2 (more) in the validation of ttbar samples.
It should be mentioned that the gen electrons are coming from W's.

We found out that due to the pruning of the GenParticle in the miniAOD. Indeed, one has
W+->W+ + (gamma -> e+ + e-)
the intermediate particles (e.g. the gamma) are dropped and the W+ is set as parent of the e+ and of the e-. In that case, the W+ has 3 or 4 daughters and that's how we detect the problem.
In RECO/AOD, the intermediate particles are kept, so there is no problem.

[That said, I am surprised that the gamma->e+ + e- gets recorded in the original GenParticle collection, but that's off topic]

For consistency, we applied the same check on the number of daughters in the RECO validation

[archiron]

any update or pbm ?

[dmitrijus]

+1
I somehow missed this PR :(

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/18521/console Started: 2017/03/17 17:09

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_9_0_X IBs after it passes the integration tests. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @smuzaffar

[cmsbuild]

+1
Tested at: 19f13d2
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-17672/18521/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-17672/18521/summary.html

[davidlange6]

+1