Repository for collecting recipes for standard physics objects for analysis of simulated events with the CMS phase 2 detector.

Contains (in the future)

a) scripts/recipes to set up the correct CMSSW environment

b) a collection of latest recipes and a CMSSW config to apply them to get collections of standard objects suitable for physics analysis as CMSSW producers (e.g. recommendedTightMuons = tightMuonProducer(slimmedMuons) etc.)

c) an ntuple production configuration file that produces an ntuple that can be analysed in a similar manner als Delphes samples (with the DAnalysis framework)

Installation

cmsrel CMSSW_9_3_5
cd CMSSW_9_3_5/src
cmsenv
git cms-init
mkdir -p RecoEgamma && pushd RecoEgamma
git clone https://github.com/nsmith-/Phase2InterimID.git
popd
git clone https://github.com/jkiesele/PhaseTwoAnalysis.git
scram b -j 8

As the global tag contains Run-2 JEC, you might want to download an SQLite file to rerun JEC. See the TWiki for more details.

Producing flat ntuples (only recommended mode for the moment)

Flat ntuples can be produced in the NTupler folder, either from PAT or RECO events, by running interactively:

cmsRun scripts/produceNtuples_cfg.py skim=False/True outFilename=MiniEvents.root inputFormat=RECO/PAT

If you want to rerun JEC, you can use the updateJEC argument with the path to the SQLite file.

The skim flag can be used to reduce the size of the output files. A histogram containing the number of events before the skim is then stored in the output files. By default, events are required to contain at least 1 lepton and 2 jets, but this can be easily modified ll.71-97 of src/produceNtuples_cfg.py.

The structure of the output tree can be seen/modified in interface/MiniEvent.h and src/MiniEvent.cc.

The main analyzers are:

• plugins/MiniFromPat.cc -- to run over PAT events
• plugins/MiniFromReco.cc -- to run over RECO events (not recommended)

Details on the object definitions are given in the implementation section.

A skeleton of crab configuration file is also provided. The following fields need to be updated:

• config.General.requestName
• config.Data.inputDataset
• config.Data.outLFNDirBase

before running

source /cvmfs/cms.cern.ch/crab3/crab.sh
crab submit crabConfig.py

To adjust the input parameters of scripts/produceNtuples_cfg.py, the three following fields need to be modified consistently:

• config.JobType.pyCfgParams
• config.JobType.inputFiles
• config.JobType.outputFiles

If you experience problems with multicrab, please consult the following link: https://twiki.cern.ch/twiki/bin/view/CMSPublic/CRAB3FAQ#Multiple_submission_fails_with_a

There is also an example multicrab script provided in the NTupler directory