Delta R overlap filter for Candidates

[olivito]

Adds a filter that runs on a collection of Cands and removes those that overlap in deltaR with another collection. Also adds dictionary for output of this module when running on PFCandidates.

The use case is for L3 muons in HLT paths with PF iso, which are seen to occasionally overlap with PF Hadrons. Hopefully going to be a temporary fix until the PF behavior there is fully understood.

The implementation was discussed on the physTools hn:
https://hypernews.cern.ch/HyperNews/CMS/get/physTools/3163/1/1/1/1/1/2/1/1/1.html

Would also like to backport this to 70X if possible.

[cmsbuild]

A new Pull Request was created by @olivito (Dominick Olivito) for CMSSW_7_1_X.

Delta R overlap filter for Candidates

It involves the following packages:

CommonTools/UtilAlgos
DataFormats/ParticleFlowCandidate

@nclopezo, @monttj, @cmsbuild, @anton-a, @thspeer, @slava77, @vadler, @Degano can you please review it and eventually sign? Thanks.
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@nclopezo, @ktf you are the release manager for this.
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[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2614/278/summary.html

[anton-a]

+1

[olivito]

I see this is still "analysis-pending." Could the responsibles please check this request and either comment or approve it?

[monttj]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?