Inheritance diagram for GenParticles2HepMCConverter:

Public Member Functions
	GenParticles2HepMCConverter (const edm::ParameterSet &pset)

void	produce (edm::Event &event, const edm::EventSetup &eventSetup) override

	~GenParticles2HepMCConverter ()

Public Member Functions inherited from edm::stream::EDProducer<>
	EDProducer ()=default

Public Member Functions inherited from edm::stream::EDProducerBase
	EDProducerBase ()

ModuleDescription const &	moduleDescription () const

virtual	~EDProducerBase ()

Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

	ProducerBase ()

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...

virtual	~ProducerBase ()

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

	EDConsumerBase ()

ProductHolderIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductHolderIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductHolderIndexAndSkipBit > &) const

std::vector < ProductHolderIndexAndSkipBit > const &	itemsToGetFromEvent () const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesDependentUpon (std::string const &iProcessName, std::string const &iModuleLabel, bool iPrint, std::vector< char const * > &oModuleLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

bool	registeredToConsume (ProductHolderIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

void	updateLookup (BranchType iBranchType, ProductHolderIndexHelper const &)

virtual	~EDConsumerBase ()

Private Member Functions
HepMC::FourVector	FourVector (const reco::Candidate::Point &point)

HepMC::FourVector	FourVector (const reco::Candidate::LorentzVector &lvec)

Private Attributes
const double	cmEnergy_

edm::EDGetTokenT < GenEventInfoProduct >	genEventInfoToken_

edm::EDGetTokenT < reco::CandidateView >	genParticlesToken_

edm::ESHandle< ParticleDataTable >	pTable_

std::vector< int >	signalParticlePdgIds_

Additional Inherited Members
Public Types inherited from edm::stream::EDProducer<>
typedef CacheContexts< T...>	CacheTypes

typedef CacheTypes::GlobalCache	GlobalCache

typedef AbilityChecker< T...>	HasAbility

typedef CacheTypes::LuminosityBlockCache	LuminosityBlockCache

typedef LuminosityBlockContextT < LuminosityBlockCache, RunCache, GlobalCache >	LuminosityBlockContext

typedef CacheTypes::LuminosityBlockSummaryCache	LuminosityBlockSummaryCache

typedef CacheTypes::RunCache	RunCache

typedef RunContextT< RunCache, GlobalCache >	RunContext

typedef CacheTypes::RunSummaryCache	RunSummaryCache

Public Types inherited from edm::stream::EDProducerBase
typedef EDProducerAdaptorBase	ModuleType

Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Static Public Member Functions inherited from edm::stream::EDProducerBase
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Detailed Description

Definition at line 27 of file GenParticles2HepMCConverter.cc.

Constructor & Destructor Documentation

GenParticles2HepMCConverter::GenParticles2HepMCConverter ( const edm::ParameterSet & pset )

explicit

Definition at line 58 of file GenParticles2HepMCConverter.cc.

References genEventInfoToken_, genParticlesToken_, edm::ParameterSet::getParameter(), and signalParticlePdgIds_.

                                                                                    :
   cmEnergy_(pset.getUntrackedParameter<double>("cmEnergy", 13000)) // dummy value to set incident proton pz for particle gun samples
 {
   genParticlesToken_ = consumes<reco::CandidateView>(pset.getParameter<edm::InputTag>("genParticles"));
   genEventInfoToken_ = consumes<GenEventInfoProduct>(pset.getParameter<edm::InputTag>("genEventInfo"));
   signalParticlePdgIds_ = pset.getParameter<std::vector<int>>("signalParticlePdgIds");
 
   produces<edm::HepMCProduct>("unsmeared");
 }

GenParticles2HepMCConverter::~GenParticles2HepMCConverter ( )

inline

Definition at line 31 of file GenParticles2HepMCConverter.cc.

31 {};

Member Function Documentation

HepMC::FourVector GenParticles2HepMCConverter::FourVector ( const reco::Candidate::Point & point )

inlineprivate

Definition at line 44 of file GenParticles2HepMCConverter.cc.

Referenced by produce().

   {
     return HepMC::FourVector(10*point.x(), 10*point.y(), 10*point.z(), 0);
   };

HepMC::FourVector GenParticles2HepMCConverter::FourVector ( const reco::Candidate::LorentzVector & lvec )

inlineprivate

Definition at line 49 of file GenParticles2HepMCConverter.cc.

References bookConverter::max.

   {
     // Avoid negative mass, set minimum m^2 = 0
     return HepMC::FourVector(lvec.px(), lvec.py(), lvec.pz(), std::hypot(lvec.P(), std::max(0., lvec.mass())));
   };

void GenParticles2HepMCConverter::produce	(	edm::Event &	event,
		const edm::EventSetup &	eventSetup
	)

overridevirtual

Implements edm::stream::EDProducerBase.

Definition at line 68 of file GenParticles2HepMCConverter.cc.

References funct::abs(), cmEnergy_, reco::Candidate::daughter(), reco::Candidate::eta(), edm::EventID::event(), spr::find(), FourVector(), genEventInfoToken_, GenParticle::GenParticle, genParticlesToken_, edm::EventSetup::getData(), i, gen::PdfInfo::id, edm::EventBase::id(), j, ResonanceBuilder::mass, reco::Candidate::mass(), reco::Candidate::mother(), gen::n, reco::Candidate::numberOfMothers(), or, AlCaHLTBitMon_ParallelJobs::p, reco::Candidate::p4(), SingleMuPt40Fwdv2_cfi_GEN_SIM::pdgId, reco::Candidate::pdgId(), pTable_, reco::Candidate::pz(), gen::PdfInfo::scalePDF, signalParticlePdgIds_, reco::Candidate::status(), findQualityFiles::v, reco::Candidate::vertex(), gen::PdfInfo::x, and gen::PdfInfo::xPDF.

 {
   edm::Handle<reco::CandidateView> genParticlesHandle;
   event.getByToken(genParticlesToken_, genParticlesHandle);
 
   edm::Handle<GenEventInfoProduct> genEventInfoHandle;
   event.getByToken(genEventInfoToken_, genEventInfoHandle);
 
   eventSetup.getData(pTable_);
 
   HepMC::GenEvent* hepmc_event = new HepMC::GenEvent();
   hepmc_event->set_event_number(event.id().event());
   hepmc_event->set_signal_process_id(genEventInfoHandle->signalProcessID());
   hepmc_event->set_event_scale(genEventInfoHandle->qScale());
   hepmc_event->set_alphaQED(genEventInfoHandle->alphaQED());
   hepmc_event->set_alphaQCD(genEventInfoHandle->alphaQCD());
 
   hepmc_event->weights() = genEventInfoHandle->weights();
 
   // Set PDF
   const gen::PdfInfo* pdf = genEventInfoHandle->pdf();
   if ( pdf != nullptr ) {
     const int pdf_id1 = pdf->id.first, pdf_id2 = pdf->id.second;
     const double pdf_x1 = pdf->x.first, pdf_x2 = pdf->x.second;
     const double pdf_scalePDF = pdf->scalePDF;
     const double pdf_xPDF1 = pdf->xPDF.first, pdf_xPDF2 = pdf->xPDF.second;
     HepMC::PdfInfo hepmc_pdfInfo(pdf_id1, pdf_id2, pdf_x1, pdf_x2, pdf_scalePDF, pdf_xPDF1, pdf_xPDF2);
     hepmc_event->set_pdf_info(hepmc_pdfInfo);
   }
 
   // Prepare list of HepMC::GenParticles
   std::map<const reco::Candidate*, HepMC::GenParticle*> genCandToHepMCMap;
   HepMC::GenParticle* hepmc_parton1 = nullptr, * hepmc_parton2 = nullptr;
   std::vector<HepMC::GenParticle*> hepmc_particles;
   const reco::Candidate* parton1 = nullptr, * parton2 = nullptr;
   for ( unsigned int i=0, n=genParticlesHandle->size(); i<n; ++i )
   {
     const reco::Candidate* p = &genParticlesHandle->at(i);
     HepMC::GenParticle* hepmc_particle = new HepMC::GenParticle(FourVector(p->p4()), p->pdgId(), p->status());
     hepmc_particle->suggest_barcode(i+1);
 
     // Assign particle's generated mass from the standard particle data table
     double particleMass;
     if ( pTable_->particle(p->pdgId()) ) particleMass = pTable_->particle(p->pdgId())->mass();
     else particleMass = p->mass();
 
     hepmc_particle->set_generated_mass(particleMass);
 
     hepmc_particles.push_back(hepmc_particle);
     genCandToHepMCMap[p] = hepmc_particle;
 
     // Find incident proton pair
     if ( p->mother() == nullptr and std::abs(p->eta()) > 5 and std::abs(p->pz()) > 1000 ) {
       if ( !parton1 and p->pz() > 0 ) {
         parton1 = p;
         hepmc_parton1 = hepmc_particle;
       }
       else if ( !parton2 and p->pz() < 0 ) {
         parton2 = p;
         hepmc_parton2 = hepmc_particle;
       }
     }
   }
 
   HepMC::GenVertex* vertex1 = nullptr;
   HepMC::GenVertex* vertex2 = nullptr;
   if ( parton1 == nullptr and parton2 == nullptr ) {
     // Particle gun samples do not have incident partons. Put dummy incident particle and prod vertex
     // Note: leave parton1 and parton2 as nullptr since it is not used anymore after creating hepmc_parton1 and 2
     const reco::Candidate::LorentzVector nullP4(0,0,0,0);
     const reco::Candidate::LorentzVector beamP4(0,0,cmEnergy_/2, cmEnergy_/2);
     vertex1 = new HepMC::GenVertex(FourVector(nullP4));
     vertex2 = new HepMC::GenVertex(FourVector(nullP4));
     hepmc_parton1 =  new HepMC::GenParticle(FourVector(+beamP4), 2212, 4);
     hepmc_parton2 =  new HepMC::GenParticle(FourVector(-beamP4), 2212, 4);
   }
   else {
     // Put incident beam particles : proton -> parton vertex
     vertex1 = new HepMC::GenVertex(FourVector(parton1->vertex()));
     vertex2 = new HepMC::GenVertex(FourVector(parton2->vertex()));
   }
   hepmc_event->add_vertex(vertex1);
   hepmc_event->add_vertex(vertex2);
   vertex1->add_particle_in(hepmc_parton1);
   vertex2->add_particle_in(hepmc_parton2);
   hepmc_event->set_beam_particles(hepmc_parton1, hepmc_parton2);
 
   // Prepare vertex list
   typedef std::map<const reco::Candidate*, HepMC::GenVertex*> ParticleToVertexMap;
   ParticleToVertexMap particleToVertexMap;
   particleToVertexMap[parton1] = vertex1;
   particleToVertexMap[parton2] = vertex2;
   for ( unsigned int i=0, n=genParticlesHandle->size(); i<n; ++i )
   {
     const reco::Candidate* p = &genParticlesHandle->at(i);
     if ( p == parton1 or p == parton2 ) continue;
 
     // Connect mother-daughters for the other cases
     for ( unsigned int j=0, nMothers=p->numberOfMothers(); j<nMothers; ++j )
     {
       // Mother-daughter hierarchy defines vertex
       const reco::Candidate* elder = p->mother(j)->daughter(0);
       HepMC::GenVertex* vertex;
       if ( particleToVertexMap.find(elder) == particleToVertexMap.end() )
       {
         vertex = new HepMC::GenVertex(FourVector(elder->vertex()));
         hepmc_event->add_vertex(vertex);
         particleToVertexMap[elder] = vertex;
       }
       else
       {
         vertex = particleToVertexMap[elder];
       }
 
       // Vertex is found. Now connect each other
       const reco::Candidate* mother = p->mother(j);
       vertex->add_particle_in(genCandToHepMCMap[mother]);
       vertex->add_particle_out(hepmc_particles[i]);
     }
   }
 
   // Finalize HepMC event record
   bool hasSignalVertex = false;
   if ( !signalParticlePdgIds_.empty() ) {
     // Loop over all vertices to assign the signal vertex, decaying to a signal particle
     for ( auto v = hepmc_event->vertices_begin(); v != hepmc_event->vertices_end(); ++v ) {
       for ( auto p = (*v)->particles_begin(HepMC::children);
             p != (*v)->particles_end(HepMC::children); ++p ) {
         const int pdgId = (*p)->pdg_id();
         if ( std::find(signalParticlePdgIds_.begin(), signalParticlePdgIds_.end(), pdgId) != signalParticlePdgIds_.end() ) {
           hepmc_event->set_signal_process_vertex(*v);
           hasSignalVertex = true;
           break;
         }
       }
       if ( hasSignalVertex ) break;
     }
   }
   // Set the default signal vertex if still not set
   if ( !hasSignalVertex ) hepmc_event->set_signal_process_vertex(*(vertex1->vertices_begin()));
 
   std::auto_ptr<edm::HepMCProduct> hepmc_product(new edm::HepMCProduct());
   hepmc_product->addHepMCData(hepmc_event);
   event.put(hepmc_product, "unsmeared");
 
 }