#include <RecoBTag/ConeIsolation/src/ConeIsolation.cc>

Inheritance diagram for ConeIsolation:

Public Member Functions
	ConeIsolation (const edm::ParameterSet &)
virtual void	produce (edm::Event &, const edm::EventSetup &)
	~ConeIsolation ()
Private Attributes
edm::InputTag	beamSpotProducer
edm::InputTag	jetTrackSrc
ConeIsolationAlgorithm *	m_algo
bool	usingBeamSpot
bool	usingVertex
edm::InputTag	vertexSrc

Detailed Description

Description: <one line="" class="" summary>="">

Implementation: <Notes on="" implementation>="">

EDProducer of the tagged TauJet with the ConeIsolationAlgorithm. It returns two collections: base collection is the JetTag, and extended Collection which is the IsolatedTauTagInfo. The method implemented in the IsolatedTauTagInfo class are used to compute the discriminator variable. A trick is used to link the IsolatedTauTagInfo to a smart reference to the JetTag.

Revision:: 1.2

Author:: Simone Gennai

Definition at line 24 of file ConeIsolation.h.

Constructor & Destructor Documentation

ConeIsolation::ConeIsolation ( const edm::ParameterSet & iConfig ) [explicit]

Definition at line 52 of file ConeIsolation.cc.

References edm::ParameterSet::getParameter(), and PixelTracksForL3Isolation_cfi::vertexSrc.

{
  jetTrackSrc = iConfig.getParameter<InputTag>("JetTrackSrc");
  vertexSrc = iConfig.getParameter<InputTag>("vertexSrc");
  usingVertex = iConfig.getParameter<bool>("useVertex");
  usingBeamSpot = iConfig.getParameter<bool>("useBeamSpot"); //If false the OfflinePrimaryVertex will be used.
  beamSpotProducer = iConfig.getParameter<edm::InputTag>("BeamSpotProducer");
  m_algo = new ConeIsolationAlgorithm(iConfig);
  
  produces<reco::JetTagCollection>(); 
   produces<reco::IsolatedTauTagInfoCollection>();       



}

ConeIsolation::~ConeIsolation ( )

Definition at line 69 of file ConeIsolation.cc.

{
  delete m_algo;
}

Member Function Documentation

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

Implements edm::EDProducer.

Definition at line 81 of file ConeIsolation.cc.

References reco::Vertex::chi2(), reco::Vertex::error(), edm::Event::getByLabel(), i, reco::Vertex::ndof(), AlCaHLTBitMon_ParallelJobs::p, parseEventContent::prod, edm::Event::put(), reco::Vertex::tracksSize(), PixelTracksForL3Isolation_cfi::vertexSrc, and reco::Vertex::z().

{
   using namespace edm;
   //Get jets with tracks
   Handle<reco::JetTracksAssociationCollection> jetTracksAssociation;
   iEvent.getByLabel(jetTrackSrc,jetTracksAssociation);

   std::auto_ptr<reco::JetTagCollection>             tagCollection;
   std::auto_ptr<reco::IsolatedTauTagInfoCollection> extCollection( new reco::IsolatedTauTagInfoCollection() );
if (not jetTracksAssociation->empty()) {
     RefToBaseProd<reco::Jet> prod( jetTracksAssociation->begin()->first );
     tagCollection.reset( new reco::JetTagCollection(prod) );
   } else {
     tagCollection.reset( new reco::JetTagCollection() );
   }

   Vertex::Error e;
   e(0,0)=1;
   e(1,1)=1;
   e(2,2)=1;
   Vertex::Point p(0,0,-1000);
   Vertex myPVtmp(p,e);//Fake vertex to be used in case no vertex is found
   Vertex myPV;

   //Get pixel vertices
   Handle<reco::VertexCollection> vertices;
   iEvent.getByLabel(vertexSrc,vertices);
   const reco::VertexCollection vertCollection = *(vertices.product());
   //Check if there is the PV!!!!
   if(vertCollection.begin() != vertCollection.end())
     myPVtmp = *(vertCollection.begin());

   //In case the beam spot is used, the Z of the vertex still comes from the PV, while the (x,y) is taken from the beamspot
   reco::BeamSpot vertexBeamSpot;
   edm::Handle<reco::BeamSpot> recoBeamSpotHandle;
   
   if(usingBeamSpot)
     {
       //Create a new vertex with the information on x0 and Y0 from the beamspot, to be used in HLT.
       iEvent.getByLabel(beamSpotProducer,recoBeamSpotHandle);
       vertexBeamSpot = *recoBeamSpotHandle;
       Vertex::Point bspoint(vertexBeamSpot.x0(),vertexBeamSpot.y0(),myPVtmp.z());
       Vertex combinedVertex = Vertex(bspoint,myPVtmp.error(),myPVtmp.chi2(),myPVtmp.ndof(),myPVtmp.tracksSize());
       myPV = combinedVertex;
         }else{
           myPV = myPVtmp;
         }
   
   for (unsigned int i = 0; i < jetTracksAssociation->size(); ++i)
     {
       pair<float,IsolatedTauTagInfo> myPair =m_algo->tag(edm::Ref<JetTracksAssociationCollection>(jetTracksAssociation,i),myPV); 
       tagCollection->setValue(i, myPair.first);
       extCollection->push_back(myPair.second);
     }

   iEvent.put(extCollection);
   iEvent.put(tagCollection);

}