Switch on BTag from candidates in reco and provide corresponding PAT tools

[arizzi]

This PR runs one candidate based tagging (exploiting the new fwk) in RECO.
The corresponding code in jetTools.py (and related PAT stuff) is also added.

@ferencek @pvmulder

[cmsbuild]

A new Pull Request was created by @arizzi for CMSSW_7_2_X.

Switch on BTag from candidates in reco and provide corresponding PAT tools

It involves the following packages:

DataFormats/PatCandidates
PhysicsTools/PatAlgos
RecoBTag/Configuration
RecoBTag/ImpactParameter
RecoBTag/SecondaryVertex

@nclopezo, @monttj, @cmsbuild, @StoyanStoynev, @slava77, @vadler, @Degano can you please review it and eventually sign? Thanks.
@TaiSakuma, @mmarionncern, @nhanvtran, @schoef, @ferencek, @pvmulder this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.

[cmsbuild]

+1
Tested at: c81f84b
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5064/706/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5064/706/summary.html

[StoyanStoynev]

Can you put this just after softPFElectronBJetTags for better readability

[pvmulder]

We are working in parallel on another PR where I am modifying this file. If you agree can include this minor change in the next PR (it is just cosmetics anyway).

[StoyanStoynev]

OK.

[StoyanStoynev]

+1
Tested c81f84b on top of CMSSW_7_2_X_2014-08-26-1400. No differences in standard plots (FWlite and DQM based scripts; extended matrix tests). New b-tagging modules (input from "Candidates") are run, here timing from wf 202:
pfImpactParameterTagInfos 38.8019 ms/ev
pfSecondaryVertexTagInfos 4.33015 ms/ev
pfCombinedSecondaryVertexBJetTags 1.09675 ms/ev
and new branches appear in the event content as intended (bytes/event in wf 202):
new: recoCandidateedmPtrsrecoJetTagInforecoIPTagInfos_pfImpactParameterTagInfos__RECO. 11655
new: recoTracks_pfImpactParameterTagInfos_ghostTracks_RECO. 7323.95
new: recoCandidateedmPtrsrecoJetTagInforecoIPTagInforecoVertexCompositePtrCandidaterecoTemplatedSecondaryVertexTagInfos_pfSecondaryVertexTagInfos__RECO. 714.445
new: recoJetedmRefToBaseProdTofloatsAssociationVector_pfCombinedSecondaryVertexBJetTags__RECO. 106.36

A couple of fixes in PatCandidates and b-tag plugins do not change the standard reco performance.

[ferencek]

@monttj, @vadler, can you guys sign this one so we can go ahead with another PR that requires this one to be merged first. Many thanks!

[monttj]

+1
PAT workflow runs fine.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_2_X IBs unless changes (tests are also fine).