PdfWeightProducer Class Reference

Inheritance diagram for PdfWeightProducer:

Public Member Functions
	PdfWeightProducer (const edm::ParameterSet &)
	~PdfWeightProducer () override
Public Member Functions inherited from edm::EDProducer
	EDProducer ()
ModuleDescription const &	moduleDescription () const
	~EDProducer () override
Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)
std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const
	ProducerBase ()
std::vector< edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const
void	registerProducts (ProducerBase *, ProductRegistry *, ModuleDescription const &)
std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...
void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)
virtual	~ProducerBase () noexcept(false)
Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const
void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...
	EDConsumerBase ()
	EDConsumerBase (EDConsumerBase const &)=delete
	EDConsumerBase (EDConsumerBase &&)=default
ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const
void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const
void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const
std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const
void	labelsForToken (EDGetToken iToken, Labels &oLabels) const
void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const
EDConsumerBase const &	operator= (EDConsumerBase const &)=delete
EDConsumerBase &	operator= (EDConsumerBase &&)=default
bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const
bool	registeredToConsumeMany (TypeID const &, BranchType) const
ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const
void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)
virtual	~EDConsumerBase () noexcept(false)

Private Member Functions
void	beginJob () override
void	endJob () override
void	produce (edm::Event &, const edm::EventSetup &) override

Private Attributes
std::string	fixPOWHEG_
edm::InputTag	genTag_
edm::EDGetTokenT< reco::GenParticleCollection >	genToken_
edm::InputTag	pdfInfoTag_
edm::EDGetTokenT< GenEventInfoProduct >	pdfInfoToken_
std::vector< std::string >	pdfSetNames_
std::vector< std::string >	pdfShortNames_
bool	useFirstAsDefault_

Additional Inherited Members
Public Types inherited from edm::EDProducer
typedef EDProducer	ModuleType
Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const *, const char *, edm::ProductResolverIndex >>
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList
Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels
Static Public Member Functions inherited from edm::EDProducer
static const std::string &	baseType ()
static void	fillDescriptions (ConfigurationDescriptions &descriptions)
static void	prevalidate (ConfigurationDescriptions &descriptions)
static bool	wantsGlobalLuminosityBlocks ()
static bool	wantsGlobalRuns ()
static bool	wantsStreamLuminosityBlocks ()
static bool	wantsStreamRuns ()
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 21 of file PdfWeightProducer.cc.

Constructor & Destructor Documentation

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

explicit

Definition at line 54 of file PdfWeightProducer.cc.

References dot(), fixPOWHEG_, gen::k, pdfSetNames_, and pdfShortNames_.

                                                                :
 fixPOWHEG_(pset.getUntrackedParameter<std::string> ("FixPOWHEG", "")),
 useFirstAsDefault_(pset.getUntrackedParameter<bool>("useFirstAsDefault",false)),
 genTag_(pset.getUntrackedParameter<edm::InputTag> ("GenTag", edm::InputTag("genParticles"))),
 genToken_(mayConsume<reco::GenParticleCollection>(genTag_)),
 pdfInfoTag_(pset.getUntrackedParameter<edm::InputTag> ("PdfInfoTag", edm::InputTag("generator"))),
 pdfInfoToken_(consumes<GenEventInfoProduct>(pdfInfoTag_)),
 pdfSetNames_(pset.getUntrackedParameter<std::vector<std::string> > ("PdfSetNames"))
{
      if (fixPOWHEG_ != "") pdfSetNames_.insert(pdfSetNames_.begin(),fixPOWHEG_);

      if (pdfSetNames_.size()>3) {
            edm::LogWarning("") << pdfSetNames_.size() << " PDF sets requested on input. Using only the first 3 sets and ignoring the rest!!";
            pdfSetNames_.erase(pdfSetNames_.begin()+3,pdfSetNames_.end());
      }

      for (unsigned int k=0; k<pdfSetNames_.size(); k++) {
            size_t dot = pdfSetNames_[k].find_first_of('.');
            size_t underscore = pdfSetNames_[k].find_first_of('_');
            if (underscore<dot) {
                  pdfShortNames_.push_back(pdfSetNames_[k].substr(0,underscore));
            } else {
                  pdfShortNames_.push_back(pdfSetNames_[k].substr(0,dot));
            }
            produces<std::vector<double> >(pdfShortNames_[k]);
      }
}

PdfWeightProducer::~PdfWeightProducer ( )

override

Definition at line 83 of file PdfWeightProducer.cc.

{}

Member Function Documentation

void PdfWeightProducer::beginJob ( void  )

overrideprivatevirtual

Reimplemented from edm::EDProducer.

Definition at line 86 of file PdfWeightProducer.cc.

References LHAPDF::initPDFSet(), gen::k, and pdfSetNames_.

                                 {
      for (unsigned int k=1; k<=pdfSetNames_.size(); k++) {
            LHAPDF::initPDFSet(k,pdfSetNames_[k-1]);
      }
}

void PdfWeightProducer::endJob ( void  )

overrideprivatevirtual

Reimplemented from edm::EDProducer.

Definition at line 93 of file PdfWeightProducer.cc.

{}

void PdfWeightProducer::produce ( edm::Event &  iEvent, const edm::EventSetup &    )

overrideprivate

Definition at line 96 of file PdfWeightProducer.cc.

References funct::abs(), DEFINE_FWK_MODULE, edm::InputTag::encode(), fixPOWHEG_, GenHFHadronMatcher_cfi::genParticles, genTag_, genToken_, edm::Event::getByToken(), mps_fire::i, gen::PdfInfo::id, globals_cff::id1, globals_cff::id2, edm::EventBase::isRealData(), gen::k, reco::LeafCandidate::mass(), eostools::move(), LHAPDF::numberPDF(), GenEventInfoProduct::pdf(), pdfInfoTag_, pdfInfoToken_, pdfSetNames_, pdfShortNames_, reco::LeafCandidate::pdgId(), edm::Event::put(), class-composition::Q, gen::PdfInfo::scalePDF, mathSSE::sqrt(), mps_update::status, reco::LeafCandidate::status(), useFirstAsDefault_, LHAPDF::usePDFMember(), create_public_lumi_plots::weights, gen::PdfInfo::x, globals_cff::x1, globals_cff::x2, LHAPDF::xfx(), and gen::PdfInfo::xPDF.

Referenced by JSONExport.JsonExport::export(), HTMLExport.HTMLExport::export(), and HTMLExport.HTMLExportStatic::export().

                                                                      {

      if (iEvent.isRealData()) return;

      edm::Handle<GenEventInfoProduct> pdfstuff;
      if (!iEvent.getByToken(pdfInfoToken_, pdfstuff)) {
            edm::LogError("PDFWeightProducer") << ">>> PdfInfo not found: " << pdfInfoTag_.encode() << " !!!";
            return;
      }

      float Q = pdfstuff->pdf()->scalePDF;

      int id1 = pdfstuff->pdf()->id.first;
      double x1 = pdfstuff->pdf()->x.first;
      double pdf1 = pdfstuff->pdf()->xPDF.first;

      int id2 = pdfstuff->pdf()->id.second;
      double x2 = pdfstuff->pdf()->x.second;
      double pdf2 = pdfstuff->pdf()->xPDF.second;
      if (useFirstAsDefault_ && pdf1 == -1. && pdf2 == -1. ) {
         LHAPDF::usePDFMember(1,0);
         pdf1 = LHAPDF::xfx(1, x1, Q, id1)/x1;
         pdf2 = LHAPDF::xfx(1, x2, Q, id2)/x2;
      }

      // Ad-hoc fix for POWHEG
      if (fixPOWHEG_!="") {
            edm::Handle<reco::GenParticleCollection> genParticles;
            if (!iEvent.getByToken(genToken_, genParticles)) {
                  edm::LogError("PDFWeightProducer") << ">>> genParticles  not found: " << genTag_.encode() << " !!!";
                  return;
            }
            unsigned int gensize = genParticles->size();
            double mboson = 0.;
            for(unsigned int i = 0; i<gensize; ++i) {
                  const reco::GenParticle& part = (*genParticles)[i];
                  int status = part.status();
                  if (status!=3) continue;
                  int id = part.pdgId();
                  if (id!=23 && abs(id)!=24) continue;
                  mboson = part.mass();
                  break;
            }
            Q = sqrt(mboson*mboson+Q*Q);
            LHAPDF::usePDFMember(1,0);
            pdf1 = LHAPDF::xfx(1, x1, Q, id1)/x1;
            pdf2 = LHAPDF::xfx(1, x2, Q, id2)/x2;
      }

      // Put PDF weights in the event
      for (unsigned int k=1; k<=pdfSetNames_.size(); ++k) {
            std::unique_ptr<std::vector<double> > weights (new std::vector<double>);
            unsigned int nweights = 1;
            if (LHAPDF::numberPDF(k)>1) nweights += LHAPDF::numberPDF(k);
            weights->reserve(nweights);

            for (unsigned int i=0; i<nweights; ++i) {
                  LHAPDF::usePDFMember(k,i);
                  double newpdf1 = LHAPDF::xfx(k, x1, Q, id1)/x1;
                  double newpdf2 = LHAPDF::xfx(k, x2, Q, id2)/x2;
                  weights->push_back(newpdf1/pdf1*newpdf2/pdf2);
            }
            iEvent.put(std::move(weights),pdfShortNames_[k-1]);
      }
}

Member Data Documentation

std::string PdfWeightProducer::fixPOWHEG_

private

Definition at line 31 of file PdfWeightProducer.cc.

Referenced by PdfWeightProducer(), and produce().

edm::InputTag PdfWeightProducer::genTag_

private

Definition at line 33 of file PdfWeightProducer.cc.

Referenced by produce().

edm::EDGetTokenT<reco::GenParticleCollection> PdfWeightProducer::genToken_

private

Definition at line 34 of file PdfWeightProducer.cc.

Referenced by produce().

edm::InputTag PdfWeightProducer::pdfInfoTag_

private

Definition at line 35 of file PdfWeightProducer.cc.

Referenced by produce().

edm::EDGetTokenT<GenEventInfoProduct> PdfWeightProducer::pdfInfoToken_

private

Definition at line 36 of file PdfWeightProducer.cc.

Referenced by produce().

std::vector<std::string> PdfWeightProducer::pdfSetNames_

private

Definition at line 37 of file PdfWeightProducer.cc.

Referenced by beginJob(), PdfWeightProducer(), and produce().

std::vector<std::string> PdfWeightProducer::pdfShortNames_

private

Definition at line 38 of file PdfWeightProducer.cc.

Referenced by PdfWeightProducer(), and produce().

bool PdfWeightProducer::useFirstAsDefault_

private

Definition at line 32 of file PdfWeightProducer.cc.

Referenced by produce().