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ParticleDecayProducer Class Reference

Original Author: Nicola De Filippis. More...

Inheritance diagram for ParticleDecayProducer:

List of all members.

Public Member Functions
	ParticleDecayProducer (const edm::ParameterSet &)
	~ParticleDecayProducer ()
Private Member Functions
virtual void	produce (edm::Event &, const edm::EventSetup &)
Private Attributes
std::vector< int >	daughtersPdgId_
std::string	decayChain_
edm::InputTag	genCandidates_
int	motherPdgId_
std::vector< std::string >	valias

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Detailed Description

Original Author: Nicola De Filippis.

Definition at line 14 of file ParticleDecayProducer.cc.

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Constructor & Destructor Documentation

ParticleDecayProducer::ParticleDecayProducer

(

const edm::ParameterSet &

iConfig

)

[explicit]

Definition at line 40 of file ParticleDecayProducer.cc.

References collection, daughtersPdgId_, decayChain_, index, j, and valias.

                                                                           :
  genCandidates_(iConfig.getParameter<InputTag>("src")),
  motherPdgId_(iConfig.getParameter<int>("motherPdgId")),
  daughtersPdgId_(iConfig.getParameter<vector<int> >("daughtersPdgId")),
  decayChain_(iConfig.getParameter<std::string>("decayChain")) {
  string alias;
  produces<CandidateCollection >(alias = decayChain_+ "Mother").setBranchAlias(alias);
  for (unsigned int j = 0; j < daughtersPdgId_.size(); ++ j) {
    ostringstream index,collection;
    index << j;
    collection << decayChain_ << "Lepton" << index.str();
    valias.push_back(collection.str());
    produces<CandidateCollection >(valias.at(j)).setBranchAlias( valias.at(j) );
  }
}

ParticleDecayProducer::~ParticleDecayProducer

(

)

Definition at line 57 of file ParticleDecayProducer.cc.

                                              {
}

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Member Function Documentation

void ParticleDecayProducer::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)			[private, virtual]

Implements edm::EDProducer.

Definition at line 60 of file ParticleDecayProducer.cc.

References clone(), daughtersPdgId_, decayChain_, genCandidates_, edm::Event::getByLabel(), i, j, motherPdgId_, p, edm::Event::put(), row, and valias.

                                                                                 {
  // get gen particle candidates
  edm::Handle<CandidateCollection> genCandidatesCollection;
  iEvent.getByLabel(genCandidates_, genCandidatesCollection);

  auto_ptr<CandidateCollection> mothercands(new CandidateCollection);
  auto_ptr<CandidateCollection> daughterscands(new CandidateCollection);
  size_t daughtersize = daughtersPdgId_.size();
  for( CandidateCollection::const_iterator p = genCandidatesCollection->begin();p != genCandidatesCollection->end(); ++ p ) {
    if (p->pdgId() == motherPdgId_  && p->status() == 3){
      mothercands->push_back(p->clone());
      size_t ndau = p->numberOfDaughters();
      for(size_t i = 0; i < ndau; ++ i){
        for (size_t j = 0; j < daughtersize; ++j){
          if (p->daughter(i)->pdgId()==daughtersPdgId_[j] && p->daughter(i)->status()==3){
            daughterscands->push_back(p->daughter(i)->clone());
          }
        }
      }      
    }
  }

  iEvent.put(mothercands, decayChain_ + "Mother");
  daughterscands->sort(GreaterByPt<reco::Candidate>());
  
  for (unsigned int row = 0; row < daughtersize; ++ row ){
    auto_ptr<CandidateCollection> leptonscands_(new CandidateCollection);
    leptonscands_->push_back((daughterscands->begin()+row)->clone());
    iEvent.put(leptonscands_, valias.at(row));
  }
}

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Member Data Documentation

std::vector<int> ParticleDecayProducer::daughtersPdgId_ [private]

Definition at line 23 of file ParticleDecayProducer.cc.

Referenced by ParticleDecayProducer(), and produce().

std::string ParticleDecayProducer::decayChain_ [private]

Definition at line 24 of file ParticleDecayProducer.cc.

Referenced by ParticleDecayProducer(), and produce().

edm::InputTag ParticleDecayProducer::genCandidates_ [private]

Definition at line 21 of file ParticleDecayProducer.cc.

Referenced by produce().

int ParticleDecayProducer::motherPdgId_ [private]

Definition at line 22 of file ParticleDecayProducer.cc.

Referenced by produce().

std::vector<std::string> ParticleDecayProducer::valias [private]

Definition at line 25 of file ParticleDecayProducer.cc.

Referenced by ParticleDecayProducer(), and produce().

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The documentation for this class was generated from the following file:

• PhysicsTools/CandAlgos/plugins/ParticleDecayProducer.cc

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