Change the type1 jet pt threshold from 10 to 15 GeV

[mmarionncern]

Following the discussion of https://indico.cern.ch/event/446476/, the jet pT threshold in type1 MET is raised from 10 to 15 GeV.

Packages modified :

• JetMETCorrections/Type1MET
• PhysicsTools/PatUtils

Expected changes in performances :
All MET variables will be impacted in a quite minimal way. Preliminary studies shows that changes are indeed here, but minimal on DY/QCD/ttbar and W+jets events.

[cmsbuild]

A new Pull Request was created by @mmarionncern for CMSSW_7_5_X.

Change the type1 jet pt threshold from 10 to 15 GeV

It involves the following packages:

JetMETCorrections/Type1MET
PhysicsTools/PatUtils

@cmsbuild, @vadler, @monttj can you please review it and eventually sign? Thanks.
@rappoccio, @imarches, @ahinzmann, @acaudron, @TaiSakuma, @jdolen, @nhanvtran, @schoef, @ferencek, @gpetruc, @mariadalfonso, @pvmulder this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 35c5148
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11362/8208/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11362/8208/summary.html

[mmarionncern]

ping?

[monttj]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_7_6_X is complete. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1