Ep combination protection

[rafaellopesdesa]

The W' group reported that the electron Ep combination was returning unphysical values at high energies when the track pT was consistent with 0. We added a protection in the combination code to only use the Ep combination MVA at high energies when the track pT error is smaller than 10 times the track pT. It is a pretty safe cut that removes these badly measured tracks from the determination of the electron energy.

Reference: https://hypernews.cern.ch/HyperNews/CMS/get/physTools/3446/1/1/1/1.html

[cmsbuild]

A new Pull Request was created by @rafaellopesdesa (Rafael Lopes de Sa) for CMSSW_8_0_X.

It involves the following packages:

EgammaAnalysis/ElectronTools

@cmsbuild, @vadler, @davidlange6, @monttj can you please review it and eventually sign? Thanks.
@Sam-Harper this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

cms-bot commands are list here #13028

[fcouderc]

@cmsbuild please test

[slava77]

@cmsbuild please test

@fcouderc , since jenkins testing is a limited resource, there is also a limited list of people to trigger the tests

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/11224/console

[cmsbuild]

+1
Tested at: 1343ced
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13279/11224/summary.html

[slava77]

@cmsbuild please test
the comparison job failed

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/11233/console

[cmsbuild]

+1
Tested at: 1343ced
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13279/11233/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13279/11233/summary.html

[rafaellopesdesa]

Hi,

I don't fully understand the result. Looking at the DQM comparison, I see
differences in HcalHitsV, but that doesn't make much sense given that the
only modification was on very high level EGamma code. Is that something
expected?

Thanks,
-- Rafael.

On Mon, Feb 15, 2016 at 9:12 PM, cmsbuild [email protected] wrote:

Comparison is ready

https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13279/11233/summary.html

—
Reply to this email directly or view it on GitHub
#13279 (comment).

[davidlange6]

Is a bug in Dqm for fast sim.