embeddingCustomizeAll Namespace Reference

Functions
def	customise

Function Documentation

def embeddingCustomizeAll.customise

(

process

)

Definition at line 9 of file embeddingCustomizeAll.py.

References list(), mathSSE.return(), and split.

def customise(process):

  # Define configuration parameter default values
  from TauAnalysis.MCEmbeddingTools.setDefaults import setDefaults
  setDefaults(process)
   
  inputProcess = process.customization_options.inputProcessRECO.value()
  print "Input process set to '%s'" % inputProcess
  
  process._Process__name = "EmbeddedRECO"

  # DQM store output for muon acceptance histograms
  process.DQMStore = cms.Service("DQMStore")

  if process.customization_options.isMC.value():
    print "Input is MC"
    
    # select generator level muons
    process.genMuonsFromZs = cms.EDProducer("GenParticlesFromZsSelectorForMCEmbedding",
      src = cms.InputTag("genParticles", "", process.customization_options.inputProcessSIM.value()),
      pdgIdsMothers = cms.vint32(23, 22),
      pdgIdsDaughters = cms.vint32(13),
      maxDaughters = cms.int32(2),
      minDaughters = cms.int32(2),
      before_or_afterFSR = cms.string("afterFSR"),
      verbosity = cms.int32(0)
    )
    process.ProductionFilterSequence.replace(process.cleanedGeneralTracks, process.genMuonsFromZs*process.cleanedGeneralTracks)
    process.ProductionFilterSequence.replace(process.cleanedParticleFlow, process.genMuonsFromZs*process.cleanedParticleFlow)

    # produce generator level MET (= sum of neutrino momenta)
    # in case Embedding is run on Monte Carlo input
    process.genMetCalo = cms.EDProducer("MixedGenMEtProducer",
      srcGenParticles1 = cms.InputTag("genParticles", "", process.customization_options.inputProcessSIM.value()),
      srcGenParticles2 = cms.InputTag("genParticles"),
      srcRemovedMuons = cms.InputTag(process.customization_options.ZmumuCollection.getModuleLabel()),
      type = cms.string("calo"),                                  
      isMC = cms.bool(True)                                
    )
    process.genMetTrue = process.genMetCalo.clone(
      type = cms.string("pf")
    )
  else:
    print "Input is Data"
    
    # produce generator level MET (= sum of neutrino momenta)
    # in case Embedding is run on real Data
    process.genMetCalo = cms.EDProducer("MixedGenMEtProducer",
      srcGenParticles1 = cms.InputTag(""),
      srcGenParticles2 = cms.InputTag("genParticles"),
      srcRemovedMuons = cms.InputTag(process.customization_options.ZmumuCollection.getModuleLabel()),
      type = cms.string("calo"),                                   
      isMC = cms.bool(False)
    )
    process.genMetTrue = process.genMetCalo.clone(
      type = cms.string("pf")
    )
  for p in process.paths:
    pth = getattr(process, p)
    if "genParticles" in pth.moduleNames():
      pth.replace(process.genParticles, process.genParticles*process.genMetCalo*process.genMetTrue)
  
  # update InputTags defined in PFEmbeddingSource_cff.py
  print "Setting collection of Z->mumu candidates to '%s'" % process.customization_options.ZmumuCollection.getModuleLabel()
  if not (hasattr(process, "cleanedGeneralTracks") and hasattr(process, "cleanedParticleFlow")):
    process.load("TauAnalysis.MCEmbeddingTools.PFEmbeddingSource_cff")
  if process.customization_options.replaceGenOrRecMuonMomenta.value() == 'gen':
    print "Taking momenta of generated tau leptons from generator level muons"
    process.generator.src = cms.InputTag('genMuonsFromZs')
  elif process.customization_options.replaceGenOrRecMuonMomenta.value() == 'rec':
    print "Taking momenta of generated tau leptons from reconstructed muons"
    process.generator.src = process.customization_options.ZmumuCollection
  else:
    raise ValueError("Invalid Configuration parameter 'replaceGenOrRecMuonMomenta' = %s !!" % process.customization_options.replaceGenOrRecMuonMomenta.value())
  # update option for removing tracks/charged PFCandidates matched to reconstructed muon
  process.cleanedGeneralTracks.selectedMuons = process.customization_options.ZmumuCollection
  process.cleanedParticleFlow.selectedMuons = process.customization_options.ZmumuCollection  
  if process.customization_options.muonTrackCleaningMode.value() == 1:
    process.cleanedGeneralTracks.removeDuplicates = cms.bool(False)
    process.cleanedParticleFlow.removeDuplicates = cms.bool(False)    
  elif process.customization_options.muonTrackCleaningMode.value() == 2:
    process.cleanedGeneralTracks.removeDuplicates = cms.bool(True)
    process.cleanedParticleFlow.removeDuplicates = cms.bool(True)    
  else:
    raise ValueError("Invalid Configuration parameter 'muonTrackCleaningMode' = %i !!" % process.customization_options.muonTrackCleaningMode.value())

  try:
    outputModule = process.output
  except:
    pass
  try:
    outputModule = getattr(process, str(getattr(process, list(process.endpaths)[-1])))
  except:
    pass

  print "Changing event-content to AODSIM + Z->mumu candidates"
  outputModule.outputCommands = cms.untracked.vstring("drop *")
  outputModule.outputCommands.extend(process.AODSIMEventContent.outputCommands)

  # get rid of second "drop *"
  index = 0
  for item in outputModule.outputCommands[:]:
    if item == "drop *" and index != 0:
      del outputModule.outputCommands[index]
      index -= 1
    index += 1  

  # keep collections of generator level muons
  outputModule.outputCommands.extend([
    'keep *_genMuonsFromZs_*_*'
  ])

  # keep collections of reconstructed muons
  outputModule.outputCommands.extend([
    'keep *_goodMuons_*_*',
    'keep *_goodMuonsPFIso_*_*',
    'keep *_highestPtMuPlus_*_*',
    'keep *_highestPtMuMinus_*_*',
    'keep *_highestPtMuPlusPFIso_*_*',
    'keep *_highestPtMuMinusPFIso_*_*'    
  ])

  # keep collections of reconstructed Z -> mumu candidates
  # (with different muon isolation criteria applied)
  outputModule.outputCommands.extend([
    'keep *_goldenZmumuCandidatesGe0IsoMuons_*_*',
    'keep *_goldenZmumuCandidatesGe1IsoMuons_*_*',
    'keep *_goldenZmumuCandidatesGe2IsoMuons_*_*',
    'keep TH2DMEtoEDM_MEtoEDMConverter_*_*'
  ])

  # keep flag indicating whether event passes or fails
  #  o Z -> mumu event selection
  #  o muon -> muon + photon radiation filter
  outputModule.outputCommands.extend([
    'keep *_goldenZmumuFilterResult_*_*',
    'keep *_genMuonRadiationFilter_*_*',
    'keep *_muonRadiationFilter_*_*'
  ])

  # CV: keep HepMCProduct for embedded event,
  #     in order to run Validation/EventGenerator/python/TauValidation_cfi.py
  #     for control plots of tau polarization and decay mode information
  outputModule.outputCommands.extend([
    'keep *HepMCProduct_generator_*_*'
  ])

  # keep distance of muons traversed in ECAL and HCAL,
  # expected and removed muon energy deposits
  outputModule.outputCommands.extend([
    'keep *_muonCaloEnergyDepositsByDistance_totalDistanceMuPlus_*',
    'keep *_muonCaloEnergyDepositsByDistance_totalEnergyDepositMuPlus_*',
    'keep *_muonCaloEnergyDepositsByDistance_totalDistanceMuMinus_*',
    'keep *_muonCaloEnergyDepositsByDistance_totalEnergyDepositMuMinus_*',
    'keep *_castorreco_removedEnergyMuMinus*_*',
    'keep *_castorreco_removedEnergyMuPlus*_*',
    'keep *_hfreco_removedEnergyMuMinus*_*',
    'keep *_hfreco_removedEnergyMuPlus*_*',
    'keep *_ecalPreshowerRecHit_removedEnergyMuMinus*_*',
    'keep *_ecalPreshowerRecHit_removedEnergyMuPlus*_*', 
    'keep *_ecalRecHit_removedEnergyMuMinus*_*',
    'keep *_ecalRecHit_removedEnergyMuPlus*_*',
    'keep *_hbhereco_removedEnergyMuMinus*_*',
    'keep *_hbhereco_removedEnergyMuPlus*_*',
    'keep *_horeco_removedEnergyMuMinus*_*',
    'keep *_horeco_removedEnergyMuPlus*_*',
  ])
  
  # replace HLT process name
  # (needed for certain reprocessed Monte Carlo samples)
  hltProcessName = "HLT"
  try:
    hltProcessName = __HLT__
  except:
    pass    
  try:
    process.dimuonsHLTFilter.TriggerResultsTag.processName = hltProcessName
    process.goodZToMuMuAtLeast1HLT.TrigTag.processName = hltProcessName
    process.goodZToMuMuAtLeast1HLT.triggerEvent.processName = hltProcessName
    process.hltTrigReport,HLTriggerResults.processName = hltProcessName
  except:
    pass

  # disable L1GtTrigReport module
  # (not used for anything yet, just prints error for every single event)
  if hasattr(process, 'HLTAnalyzerEndpath'):
    process.HLTAnalyzerEndpath.remove(process.hltL1GtTrigReport)
  
  # apply configuration parameters
  print "Setting mdtau to %i" % process.customization_options.mdtau.value()
  process.generator.Ztautau.TauolaOptions.InputCards.mdtau = process.customization_options.mdtau
  if hasattr(process.generator, "ParticleGun"):
    process.generator.ParticleGun.ExternalDecays.Tauola.InputCards.mdtau = process.customization_options.mdtau
  if process.customization_options.useTauolaPolarization.value():
    print "Enabling tau polarization effects in TAUOLA"
    # NOTE: polarization effects are only approximate,
    #       because Embedded events do not have proper parton history in HepMC::GenEvent
    #      (cf. arXiv:hep-ph/0101311 and arXiv:1201.0117)
    process.generator.Ztautau.TauolaOptions.UseTauolaPolarization = cms.bool(True)
  else:
    print "Disabling tau polarization effects in TAUOLA"
    # NOTE: tau polarization effects need to be added by reweighting Embedded events
    #       using weights computed by TauSpinner package
    process.generator.Ztautau.TauolaOptions.UseTauolaPolarization = cms.bool(False)
  
  print "Setting minVisibleTransverseMomentum to '%s'" % process.customization_options.minVisibleTransverseMomentum.value()
  process.generator.Ztautau.minVisibleTransverseMomentum = process.customization_options.minVisibleTransverseMomentum

  print "Setting transformationMode to %i" % process.customization_options.transformationMode.value()
  process.generator.Ztautau.transformationMode = process.customization_options.transformationMode

  print "Setting rfRotationAngle to %1.0f" % process.customization_options.rfRotationAngle.value()
  process.generator.Ztautau.rfRotationAngle = process.customization_options.rfRotationAngle

  print "Setting rfMirror to %s" % process.customization_options.rfMirror.value()
  process.generator.Ztautau.rfMirror = process.customization_options.rfMirror

  print "Setting muon radiation corrections to \"%s\"" % process.customization_options.applyMuonRadiationCorrection.value()
  process.generator.Ztautau.applyMuonRadiationCorrection = process.customization_options.applyMuonRadiationCorrection

  if process.customization_options.overrideBeamSpot.value():
    bs = cms.string("BeamSpotObjects_2009_LumiBased_SigmaZ_v28_offline")
    process.GlobalTag.toGet = cms.VPSet(
      cms.PSet(
        record = cms.string("BeamSpotObjectsRcd"),
        tag = bs,
        connect = cms.untracked.string("frontier://FrontierProd/CMS_COND_31X_BEAMSPOT")
      )
    )
    print "BeamSpot in globaltag set to '%s'" % bs 
  else:
    print "BeamSpot in globaltag not changed"

  # CV: disable gen. vertex smearing
  #    (embed tau leptons exactly at Z->mumu event vertex)
  print "Disabling gen. vertex smearing"
  process.VtxSmeared = cms.EDProducer("FlatEvtVtxGenerator", 
    MaxZ = cms.double(0.0),
    MaxX = cms.double(0.0),
    MaxY = cms.double(0.0),
    MinX = cms.double(0.0),
    MinY = cms.double(0.0),
    MinZ = cms.double(0.0),
    TimeOffset = cms.double(0.0),
    src = cms.InputTag("generator","unsmeared")
  )  

  if process.customization_options.useJson.value():
    print "Enabling event selection by JSON file"
    import PhysicsTools.PythonAnalysis.LumiList as LumiList
    import FWCore.ParameterSet.Types as CfgTypes
    myLumis = LumiList.LumiList(filename = 'my.json').getCMSSWString().split(',')
    process.source.lumisToProcess = CfgTypes.untracked(CfgTypes.VLuminosityBlockRange())
    process.source.lumisToProcess.extend(myLumis)

  #----------------------------------------------------------------------------------------------------------------------
  # CV: need to rerun particle-flow algorithm in order to create links between PFMuon -> PFBlocks -> PFClusters -> PFRecHits
  #    (configure particle-flow sequence before overwriting modules in order to mix collections
  #     of objects reconstructed and Z -> mu+ mu- event with simulated tau decay products)
  if process.customization_options.embeddingMode.value() == "RH" and process.customization_options.cleaningMode == 'PF':
    rerunParticleFlow(process, inputProcess)
    process.ProductionFilterSequence += process.rerunParticleFlowSequenceForPFMuonCleaning
  #----------------------------------------------------------------------------------------------------------------------  

  # mix "general" Track collection
  process.generalTracksORG = process.generalTracks.clone()
  process.generalTracks = cms.EDProducer("TrackMixer",
    todo = cms.VPSet(
      cms.PSet(                                     
        collection1 = cms.InputTag("generalTracksORG", "", "EmbeddedRECO"),
        collection2 = cms.InputTag("cleanedGeneralTracks")
      )
    ),
    verbosity = cms.int32(0)                                         
  )
     
  for p in process.paths:
    pth = getattr(process,p)
    if "generalTracks" in pth.moduleNames():
      pth.replace(process.generalTracks, process.generalTracksORG*process.generalTracks)

  #----------------------------------------------------------------------------------------------------------------------
  # CV/TF: mixing of std::vector<Trajectory> from Zmumu event and embedded tau decay products does not work yet.
  #        For the time-being, we need to use the Trajectory objects from the embedded event
  process.trackerDrivenElectronSeedsORG = process.trackerDrivenElectronSeeds.clone()
  process.trackerDrivenElectronSeedsORG.TkColList = cms.VInputTag(
    cms.InputTag("generalTracksORG")
  )

  process.trackerDrivenElectronSeeds = cms.EDProducer("ElectronSeedTrackRefUpdater",
    PreIdLabel = process.trackerDrivenElectronSeedsORG.PreIdLabel,
    PreGsfLabel = process.trackerDrivenElectronSeedsORG.PreGsfLabel,
    targetTracks = cms.InputTag("generalTracks"),
    inSeeds = cms.InputTag("trackerDrivenElectronSeedsORG", process.trackerDrivenElectronSeedsORG.PreGsfLabel.value()),
    inPreId = cms.InputTag("trackerDrivenElectronSeedsORG", process.trackerDrivenElectronSeedsORG.PreIdLabel.value()),
  )

  for p in process.paths:
    pth = getattr(process,p)
    if "trackerDrivenElectronSeeds" in pth.moduleNames():
        pth.replace(process.trackerDrivenElectronSeeds, process.trackerDrivenElectronSeedsORG*process.trackerDrivenElectronSeeds)

  # CV: need to keep 'generalTracksORG' collection in event-content,
  #     as (at least electron based) PFCandidates will refer to it,
  #     causing exception in 'pfNoPileUp' module otherwise
  outputModule.outputCommands.extend(['keep recoTracks_generalTracksORG_*_*'])
  #----------------------------------------------------------------------------------------------------------------------
  
  #----------------------------------------------------------------------------------------------------------------------
  # mix collections of GSF electron tracks
  process.electronGsfTracksORG = process.electronGsfTracks.clone()
  process.electronGsfTracks = cms.EDProducer("GsfTrackMixer", 
    collection1 = cms.InputTag("electronGsfTracksORG", "", "EmbeddedRECO"),
    collection2 = cms.InputTag("electronGsfTracks", "", inputProcess)
  )

  process.gsfConversionTrackProducer.TrackProducer = cms.string('electronGsfTracksORG')

  for p in process.paths:
    pth = getattr(process,p)
    if "electronGsfTracks" in pth.moduleNames():
        pth.replace(process.electronGsfTracks, process.electronGsfTracksORG*process.electronGsfTracks)

  process.generalConversionTrackProducer.TrackProducer = cms.string('generalTracksORG')
  process.uncleanedOnlyGeneralConversionTrackProducer.TrackProducer = cms.string('generalTracksORG')

  process.gsfElectronsORG = process.gsfElectrons.clone()
  process.gsfElectrons = cms.EDProducer("GSFElectronsMixer",
      col1 = cms.InputTag("gsfElectronsORG"),
      col2 = cms.InputTag("gsfElectrons", "", inputProcess)
  )
  for p in process.paths:
    pth = getattr(process,p)
    if "gsfElectrons" in pth.moduleNames():
      pth.replace(process.gsfElectrons, process.gsfElectronsORG*process.gsfElectrons)
  #----------------------------------------------------------------------------------------------------------------------
  
  # dE/dx information for mixed track collections not yet implemented in 'TracksMixer' module,
  # disable usage of dE/dx information in all event reconstruction modules for now
  for p in process.paths:
    pth = getattr(process,p)
    for mod in pth.moduleNames():
      if mod.find("dedx") != -1 and mod.find("Zmumu") == -1:
        if mod.find("ForPFMuonCleaning") == -1:
          print "Removing %s" % mod
        module = getattr(process, mod)
        pth.remove(module)

  # CV: Compute expected energy deposits of muon in EB/EE, HB/HE and HO:
  #      (1) compute distance traversed by muons produced in Z -> mu+ mu- decay
  #          through individual calorimeter cells
  #      (2) scale distances by expected energy loss dE/dx of muon
  from TrackingTools.TrackAssociator.default_cfi import TrackAssociatorParameterBlock
  process.muonCaloDistances = cms.EDProducer('MuonCaloDistanceProducer',
    trackAssociator = TrackAssociatorParameterBlock.TrackAssociatorParameters,
    selectedMuons = process.customization_options.ZmumuCollection)
  process.ProductionFilterSequence += process.muonCaloDistances

  # mix collections of L1Extra objects
  l1ExtraCollections = [
      [ "L1EmParticle",     "Isolated"    ],
      [ "L1EmParticle",     "NonIsolated" ],
      [ "L1EtMissParticle", "MET"         ],
      [ "L1EtMissParticle", "MHT"         ],
      [ "L1JetParticle",    "Central"     ],
      [ "L1JetParticle",    "Forward"     ],
      [ "L1JetParticle",    "Tau"         ],
      [ "L1MuonParticle",   ""            ]
  ]
  l1extraParticleCollections = []
  for l1ExtraCollection in l1ExtraCollections:
      inputType = l1ExtraCollection[0]
      pluginType = None
      srcVeto = cms.InputTag('')
      dRveto = 0.
      if inputType == "L1EmParticle":
          pluginType = "L1ExtraEmParticleMixerPlugin"
          srcSelectedMuons = process.customization_options.ZmumuCollection
          dRveto = 0.3
      elif inputType == "L1EtMissParticle":
          pluginType = "L1ExtraMEtMixerPlugin"
      elif inputType == "L1JetParticle":
          pluginType = "L1ExtraJetParticleMixerPlugin"
          srcSelectedMuons = process.customization_options.ZmumuCollection
          dRveto = 0.3
      elif inputType == "L1MuonParticle":
          pluginType = "L1ExtraMuonParticleMixerPlugin"
          srcSelectedMuons = process.customization_options.ZmumuCollection
          dRveto = 0.8
      else:
          raise ValueError("Invalid L1Extra type = %s !!" % inputType)
      instanceLabel = l1ExtraCollection[1]
      l1extraParticleCollections.append(cms.PSet(
          pluginType = cms.string(pluginType),
      instanceLabel = cms.string(instanceLabel),
      srcSelectedMuons2 = srcSelectedMuons,
          dRveto2 = cms.double(dRveto)))
      if inputType == 'L1EtMissParticle':
        l1extraParticleCollections[-1].srcMuons = cms.InputTag("muonCaloDistances", "muons")
        l1extraParticleCollections[-1].distanceMapMuPlus = cms.InputTag("muonCaloDistances", "distancesMuPlus")
        l1extraParticleCollections[-1].distanceMapMuMinus = cms.InputTag("muonCaloDistances", "distancesMuPlus")
        l1extraParticleCollections[-1].H_Calo_AbsEtaLt12 = cms.double(process.customization_options.muonCaloCleaningSF.value()*0.75)
        l1extraParticleCollections[-1].H_Calo_AbsEta12to17 = cms.double(process.customization_options.muonCaloCleaningSF.value()*0.6)
        l1extraParticleCollections[-1].H_Calo_AbsEtaGt17 = cms.double(process.customization_options.muonCaloCleaningSF.value()*0.3)        

  process.l1extraParticlesORG = process.l1extraParticles.clone()
  process.l1extraParticles = cms.EDProducer('L1ExtraMixer',
      src1 = cms.InputTag("l1extraParticlesORG"),                                          
      src2 = cms.InputTag("l1extraParticles", "", inputProcess),
      collections = cms.VPSet(l1extraParticleCollections)
  )
  for p in process.paths:
      pth = getattr(process,p)
      if "l1extraParticles" in pth.moduleNames():
          pth.replace(process.l1extraParticles, process.l1extraParticlesORG*process.l1extraParticles)

  if process.customization_options.embeddingMode.value() == "PF":
    print "Using PF-embedding"
    from TauAnalysis.MCEmbeddingTools.embeddingCustomizePF import customise as customisePF
    customisePF(process, inputProcess)
  elif process.customization_options.embeddingMode.value() == "RH":
    print "Using RH-embedding"
    from TauAnalysis.MCEmbeddingTools.embeddingCustomizeRH import customise as customiseRH
    customiseRH(process, inputProcess)
  else:
    raise ValueError("Invalid Configuration parameter 'embeddingMode' = %s !!" % process.customization_options.embeddingMode.value())

  # it should be the best solution to take the original beam spot for the
  # reconstruction of the new primary vertex
  # use the one produced earlier, do not produce your own
  for s in process.sequences:
     seq = getattr(process,s)
     seq.remove(process.offlineBeamSpot) 

  try:
    process.metreco.remove(process.BeamHaloId)
  except:
    pass

  try:
    outputModule = process.output
  except:
    pass
  try:
    outputModule = getattr(process, str(getattr(process, list(process.endpaths)[-1])))
  except:
    pass

  process.filterEmptyEv.src = cms.untracked.InputTag("generatorSmeared", "", "EmbeddedRECO")

  try:
    process.schedule.remove(process.DQM_FEDIntegrity_v3)
  except:
    pass

  process.load("TauAnalysis/MCEmbeddingTools/ZmumuStandaloneSelection_cff")
  process.goldenZmumuFilter.src = process.customization_options.ZmumuCollection
  if process.customization_options.applyZmumuSkim.value():
    print "Enabling Zmumu skim"
    process.load("TrackingTools/TransientTrack/TransientTrackBuilder_cfi")
    for path in process.paths:
      if process.customization_options.isMC.value():
        getattr(process,path)._seq = process.goldenZmumuFilterSequence * getattr(process,path)._seq
      else:
        getattr(process,path)._seq = process.goldenZmumuFilterSequenceData * getattr(process,path)._seq
    process.options = cms.untracked.PSet(
      wantSummary = cms.untracked.bool(True)
    )
    # CV: keep track of Z->mumu selection efficiency
    process.goldenZmumuFilterResult = cms.EDProducer("CandViewCountEventSelFlagProducer",
      src = process.customization_options.ZmumuCollection,
      minNumber = cms.uint32(1)
    )
    process.goldenZmumuFilterEfficiencyPath = cms.Path(process.goldenZmumuSelectionSequence + process.goldenZmumuFilterResult + process.MEtoEDMConverter)
    process.schedule.append(process.goldenZmumuFilterEfficiencyPath)
  else:
    print "Zmumu skim disabled"

  # CV: keep track of which events pass/fail muon -> muon + photon radiation filters
  #     on generator and reconstruction level, but do not actually reject any events
  if process.customization_options.isMC.value():
    process.load("TauAnalysis/MCEmbeddingTools/genMuonRadiationFilter_cfi")
    process.genMuonRadiationFilter.srcGenParticles = cms.InputTag('genParticles::%s' % process.customization_options.inputProcessSIM.value())
    process.genMuonRadiationFilter.invert = cms.bool(False)
    process.genMuonRadiationFilter.filter = cms.bool(False)
    process.reconstruction_step += process.genMuonRadiationFilter
  # CV: keep track of which events pass/fail muon -> muon + photon radiation filter,
  #     but do not actually reject any events
  process.load("TauAnalysis/MCEmbeddingTools/muonRadiationFilter_cfi")
  process.particleFlowPtrsForMuonRadiationFilter.src = cms.InputTag('particleFlow', '', inputProcess)
  process.muonRadiationFilter.srcSelectedMuons = process.customization_options.ZmumuCollection
  process.muonRadiationFilter.invert = cms.bool(False)
  process.muonRadiationFilter.filter = cms.bool(False)  
  process.reconstruction_step += process.muonRadiationFilterSequence

  # CV: disable ECAL/HCAL noise simulation
  if process.customization_options.disableCaloNoise.value():
    print "Disabling ECAL/HCAL noise simulation" 
    process.simEcalUnsuppressedDigis.doNoise = cms.bool(False)
    process.simEcalUnsuppressedDigis.doESNoise = cms.bool(False)
    process.simHcalUnsuppressedDigis.doNoise = cms.bool(False)
    process.simHcalUnsuppressedDigis.doThermalNoise = cms.bool(False)
  else:
    print "Keeping ECAL/HCAL noise simulation enabled"
    
  # AB: The following producers are currently commented out. These mostly produce correction
  # factors from input .root files. Such binary files are not desirable to have in a CMSSW
  # release, so they are not included at the moment. A possible solution is to store and look
  # up the correction factors via the Frontier DB.
  """
  # CV: apply/do not apply muon momentum corrections determined by Rochester group
  if process.customization_options.replaceGenOrRecMuonMomenta.value() == "rec" and hasattr(process, "goldenZmumuSelectionSequence"):
    if process.customization_options.applyRochesterMuonCorr.value():
      print "Enabling Rochester muon momentum corrections"
      process.patMuonsForZmumuSelectionRochesterMomentumCorr = cms.EDProducer("RochesterCorrPATMuonProducer",
        src = cms.InputTag('patMuonsForZmumuSelection'),
        isMC = cms.bool(process.customization_options.isMC.value())
      )
      process.goldenZmumuSelectionSequence.replace(process.patMuonsForZmumuSelection, process.patMuonsForZmumuSelection*process.patMuonsForZmumuSelectionRochesterMomentumCorr)
      process.goodMuons.src = cms.InputTag('patMuonsForZmumuSelectionRochesterMomentumCorr')
  else:
    print "Rochester muon momentum corrections disabled"

  if process.customization_options.applyMuonRadiationCorrection.value() != "":
    print "Muon -> muon + photon radiation correction enabled"
    process.load("TauAnalysis/MCEmbeddingTools/muonRadiationCorrWeightProducer_cfi")
    if process.customization_options.applyMuonRadiationCorrection.value() == "photos":
      process.muonRadiationCorrWeightProducer.lutDirectoryRef = cms.string('genMuonRadCorrAnalyzerPHOTOS')
      process.muonRadiationCorrWeightProducer.lutDirectoryOthers = cms.PSet(                              
        Summer12mcMadgraph = cms.string('genMuonRadCorrAnalyzer')
      )
    elif process.customization_options.applyMuonRadiationCorrection.value() == "pythia":
      process.muonRadiationCorrWeightProducer.lutDirectoryRef = cms.string('genMuonRadCorrAnalyzerPYTHIA')
      process.muonRadiationCorrWeightProducer.lutDirectoryOthers = cms.PSet(                              
        Summer12mcMadgraph = cms.string('genMuonRadCorrAnalyzer')
      )
    else:
      raise ValueError("Invalid Configuration parameter 'applyMuonRadiationCorrection' = %s !!" % process.customization_options.applyMuonRadiationCorrection.value())
    process.reconstruction_step += process.muonRadiationCorrWeightProducer
    outputModule.outputCommands.extend([
      'keep *_muonRadiationCorrWeightProducer_*_*',      
      'keep *_generator_muonsBeforeRad_*',
      'keep *_generator_muonsAfterRad_*'
    ])
  else:
    print "Muon -> muon + photon radiation correction disabled"

  # CV: compute reweighting factors to compensate for smearing of di-muon Pt and mass distributions caused by:
  #    o (mis)reconstruction of muon momenta
  #    o muon -> muon + photon radiation corrections
  #
  #     mdtau values are defined in http:marpix1.in2p3.fr/Physics/biblio_top/mc_toprex_405.ps.gz
  #
  embeddingKineReweightTable = {
    (115, 'elec1_9to30had1_15'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_ePt9to30tauPtGt18_genEmbedded.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_ePt9to30tauPtGt18_recEmbedded.root'),
    (115, 'elec1_20had1_18'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_ePtGt20tauPtGt18_genEmbedded.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_ePtGt20tauPtGt18_recEmbedded.root'),
    (116, 'mu1_7to25had1_15'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_muPt7to25tauPtGt18_genEmbedded.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_muPt7to25tauPtGt18_recEmbedded.root'),
    (116, 'mu1_16had1_18'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_muPtGt16tauPtGt18_genEmbedded.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_muPtGt16tauPtGt18_recEmbedded.root'),
    (121, 'elec1_17elec2_8'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_emu_genEmbedding.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_emu_recEmbedding.root'),
    (122, 'mu1_18mu2_8'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_emu_genEmbedding.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_emu_recEmbedding.root'),
    (123, 'tau1_18tau2_8'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_emu_genEmbedding.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_emu_recEmbedding.root'),
    (132, 'had1_30had2_30'): ('TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_tautau_genEmbedding.root', 'TauAnalysis/MCEmbeddingTools/data/embeddingKineReweight_tautau_recEmbedding.root')
  }

  key = (process.customization_options.mdtau.value(), process.customization_options.minVisibleTransverseMomentum.value())
  if key in embeddingKineReweightTable:
    process.load("TauAnalysis/MCEmbeddingTools/embeddingKineReweight_cff")

    genEmbeddingReweightFile, recEmbeddingReweightFile = embeddingKineReweightTable[key]
    process.embeddingKineReweightGENembedding.inputFileName = cms.FileInPath(genEmbeddingReweightFile)
    process.embeddingKineReweightRECembedding.inputFileName = cms.FileInPath(recEmbeddingReweightFile)

    process.reconstruction_step += process.embeddingKineReweightSequence
    outputModule.outputCommands.extend([
      'keep *_embeddingKineReweight*_*_*'
    ])
  else:
    print 'Do not produce embeddingKineWeights for mdtau=%d, minVisibleTransverseMomuntem=%s !!' % (key[0], key[1])

  # CV: compute weights for correcting Embedded samples 
  #     for efficiency with which Zmumu events used as input for Embedding production were selected
  process.load("TauAnalysis/MCEmbeddingTools/ZmumuEvtSelEffCorrWeightProducer_cfi")
  process.ZmumuEvtSelEffCorrWeightProducer.selectedMuons = process.customization_options.ZmumuCollection
  process.ZmumuEvtSelEffCorrWeightProducer.verbosity = cms.int32(0)
  process.reconstruction_step += process.ZmumuEvtSelEffCorrWeightProducer
  outputModule.outputCommands.extend([
    'keep *_ZmumuEvtSelEffCorrWeightProducer_*_*'
  ])
  """

  # TauSpinner
#  process.RandomNumberGeneratorService.TauSpinnerReco = cms.PSet(
#    initialSeed = cms.untracked.uint32(123456789),
#    engineName = cms.untracked.string('HepJamesRandom')
#  )

#  process.load('GeneratorInterface.ExternalDecays.TauSpinner_cfi')
#  #process.TauSpinnerReco.isTauolaConfigured = cms.bool(True)
#  process.reconstruction_step += process.TauSpinnerReco
#  outputModule.outputCommands.extend([
#    'keep *_TauSpinnerReco_*_*'
#  ])

  return(process)