#include <ShiftedJetProducerT.h>

Inheritance diagram for ShiftedJetProducerT< T, Textractor >:

Public Member Functions
	ShiftedJetProducerT (const edm::ParameterSet &cfg)

	~ShiftedJetProducerT ()

Public Member Functions inherited from edm::EDProducer
	EDProducer ()

virtual	~EDProducer ()

Public Member Functions inherited from edm::ProducerBase
	ProducerBase ()

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

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

virtual	~ProducerBase ()

Private Types
typedef std::vector< T >	JetCollection

Private Member Functions
void	produce (edm::Event &evt, const edm::EventSetup &es)

Private Attributes
bool	addResidualJES_

JetCorrectionUncertainty *	jecUncertainty_

double	jecUncertaintyValue_

double	jetCorrEtaMax_

Textractor	jetCorrExtractor_

edm::FileInPath	jetCorrInputFileName_

std::string	jetCorrLabelUpToL3_

std::string	jetCorrLabelUpToL3Res_

JetCorrectorParameters *	jetCorrParameters_

std::string	jetCorrPayloadName_

std::string	jetCorrUncertaintyTag_

std::string	moduleLabel_

double	shiftBy_

edm::InputTag	src_

int	verbosity_

Additional Inherited Members
Public Types inherited from edm::EDProducer
typedef EDProducer	ModuleType

typedef WorkerT< EDProducer >	WorkerType

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

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

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::EDProducer
CurrentProcessingContext const *	currentContext () const

Protected Member Functions inherited from edm::ProducerBase
template<class TProducer , class TMethod >
void	callWhenNewProductsRegistered (TProducer *iProd, TMethod iMethod)

Detailed Description

template<typename T, typename Textractor>
class ShiftedJetProducerT< T, Textractor >

Vary energy of jets by +/- 1 standard deviation, in order to estimate resulting uncertainty on MET

NOTE: energy scale uncertainties are taken from the Database

Author: Christian Veelken, LLR

Version

Revision:: 1.4

Id:: ShiftedJetProducerT.h,v 1.4 2012/08/31 09:59:15 veelken Exp

Definition at line 40 of file ShiftedJetProducerT.h.

Member Typedef Documentation

template<typename T , typename Textractor >

typedef std::vector<T> ShiftedJetProducerT< T, Textractor >::JetCollection

private

Definition at line 42 of file ShiftedJetProducerT.h.

Constructor & Destructor Documentation

template<typename T , typename Textractor >

ShiftedJetProducerT< T, Textractor >::ShiftedJetProducerT ( const edm::ParameterSet & cfg )

inlineexplicit

Definition at line 46 of file ShiftedJetProducerT.h.

     : moduleLabel_(cfg.getParameter<std::string>("@module_label")),
       src_(cfg.getParameter<edm::InputTag>("src")),
       jetCorrPayloadName_(""),
       jetCorrParameters_(0),
       jecUncertainty_(0),
       jecUncertaintyValue_(-1.)
   {
     if ( cfg.exists("jecUncertaintyValue") ) {
       jecUncertaintyValue_ = cfg.getParameter<double>("jecUncertaintyValue");
     } else {
       jetCorrUncertaintyTag_ = cfg.getParameter<std::string>("jetCorrUncertaintyTag");
       if ( cfg.exists("jetCorrInputFileName") ) {
     jetCorrInputFileName_ = cfg.getParameter<edm::FileInPath>("jetCorrInputFileName");
     if ( jetCorrInputFileName_.location() == edm::FileInPath::Unknown) throw cms::Exception("ShiftedJetProducerT")
       << " Failed to find JEC parameter file = " << jetCorrInputFileName_ << " !!\n";
     std::cout << "Reading JEC parameters = " << jetCorrUncertaintyTag_  
           << " from file = " << jetCorrInputFileName_.fullPath() << "." << std::endl;
     jetCorrParameters_ = new JetCorrectorParameters(jetCorrInputFileName_.fullPath().data(), jetCorrUncertaintyTag_);
     jecUncertainty_ = new JetCorrectionUncertainty(*jetCorrParameters_);
       } else {
     std::cout << "Reading JEC parameters = " << jetCorrUncertaintyTag_
           << " from DB/SQLlite file." << std::endl;
     jetCorrPayloadName_ = cfg.getParameter<std::string>("jetCorrPayloadName");
       }
     }
 
     addResidualJES_ = cfg.getParameter<bool>("addResidualJES");
     jetCorrLabelUpToL3_ = ( cfg.exists("jetCorrLabelUpToL3") ) ?
       cfg.getParameter<std::string>("jetCorrLabelUpToL3") : "";
     jetCorrLabelUpToL3Res_ = ( cfg.exists("jetCorrLabelUpToL3Res") ) ?
       cfg.getParameter<std::string>("jetCorrLabelUpToL3Res") : "";
     jetCorrEtaMax_ = ( cfg.exists("jetCorrEtaMax") ) ?
       cfg.getParameter<double>("jetCorrEtaMax") : 9.9;
 
     shiftBy_ = cfg.getParameter<double>("shiftBy");
 
     verbosity_ = ( cfg.exists("verbosity") ) ?
       cfg.getParameter<int>("verbosity") : 0;
 
     produces<JetCollection>();
   }

template<typename T , typename Textractor >

ShiftedJetProducerT< T, Textractor >::~ShiftedJetProducerT ( )

inline

Definition at line 88 of file ShiftedJetProducerT.h.

References ShiftedJetProducerT< T, Textractor >::jecUncertainty_, and ShiftedJetProducerT< T, Textractor >::jetCorrParameters_.

   {
     delete jetCorrParameters_;
     delete jecUncertainty_;
   }

Member Function Documentation

template<typename T , typename Textractor >

void ShiftedJetProducerT< T, Textractor >::produce	(	edm::Event &	evt,
		const edm::EventSetup &	es
	)

inlineprivatevirtual

Implements edm::EDProducer.

Definition at line 96 of file ShiftedJetProducerT.h.

   {
     if ( verbosity_ ) {
       std::cout << "<ShiftedJetProducerT::produce>:" << std::endl;
       std::cout << " moduleLabel = " << moduleLabel_ << std::endl;
       std::cout << " src = " << src_.label() << std::endl;
     }
 
     edm::Handle<JetCollection> originalJets;
     evt.getByLabel(src_, originalJets);
 
     std::auto_ptr<JetCollection> shiftedJets(new JetCollection);
     
     if ( jetCorrPayloadName_ != "" ) {
       edm::ESHandle<JetCorrectorParametersCollection> jetCorrParameterSet;
       es.get<JetCorrectionsRecord>().get(jetCorrPayloadName_, jetCorrParameterSet); 
       const JetCorrectorParameters& jetCorrParameters = (*jetCorrParameterSet)[jetCorrUncertaintyTag_];
       delete jecUncertainty_;
       jecUncertainty_ = new JetCorrectionUncertainty(jetCorrParameters);
     }
 
     for ( typename JetCollection::const_iterator originalJet = originalJets->begin();
       originalJet != originalJets->end(); ++originalJet ) {
       reco::Candidate::LorentzVector originalJetP4 = originalJet->p4();
       if ( verbosity_ ) {
     std::cout << "originalJet: Pt = " << originalJetP4.pt() << ", eta = " << originalJetP4.eta() << ", phi = " << originalJetP4.phi() << std::endl;
       }
 
       double shift = 0.;
       if ( jecUncertaintyValue_ != -1. ) {
     shift = jecUncertaintyValue_;
       } else {
     jecUncertainty_->setJetEta(originalJetP4.eta());
     jecUncertainty_->setJetPt(originalJetP4.pt());
     
     shift = jecUncertainty_->getUncertainty(true);
       }
       if ( verbosity_ ) {
     std::cout << "shift = " << shift << std::endl;
       }
 
       if ( addResidualJES_ ) {
     static SmearedJetProducer_namespace::RawJetExtractorT<T> rawJetExtractor;
     reco::Candidate::LorentzVector rawJetP4 = rawJetExtractor(*originalJet);
     if ( rawJetP4.E() > 1.e-1 ) {
       reco::Candidate::LorentzVector corrJetP4upToL3 = 
         jetCorrExtractor_(*originalJet, jetCorrLabelUpToL3_, &evt, &es, jetCorrEtaMax_, &rawJetP4);
       reco::Candidate::LorentzVector corrJetP4upToL3Res = 
         jetCorrExtractor_(*originalJet, jetCorrLabelUpToL3Res_, &evt, &es, jetCorrEtaMax_, &rawJetP4);
       if ( corrJetP4upToL3.E() > 1.e-1 && corrJetP4upToL3Res.E() > 1.e-1 ) {
         double residualJES = (corrJetP4upToL3Res.E()/corrJetP4upToL3.E()) - 1.;
         shift = TMath::Sqrt(shift*shift + residualJES*residualJES);
       }
     }
       }
 
       shift *= shiftBy_;
       if ( verbosity_ ) {
     std::cout << "shift*shiftBy = " << shift << std::endl;
       }
 
       T shiftedJet(*originalJet);
       shiftedJet.setP4((1. + shift)*originalJetP4);
       if ( verbosity_ ) {
     std::cout << "shiftedJet: Pt = " << shiftedJet.pt() << ", eta = " << shiftedJet.eta() << ", phi = " << shiftedJet.phi() << std::endl;
       }
     
       shiftedJets->push_back(shiftedJet);
     }
   
     evt.put(shiftedJets);
   }