#include <ImpactParameterAlgorithm.h>

Public Member Functions
	ImpactParameterAlgorithm (const edm::ParameterSet &parameters)

	ImpactParameterAlgorithm ()

void	setPrimaryVertex (reco::Vertex *pv)

void	setTransientTrackBuilder (const TransientTrackBuilder *)

std::pair< float, reco::TauImpactParameterInfo >	tag (const reco::IsolatedTauTagInfoRef &, const reco::Vertex &)

	~ImpactParameterAlgorithm ()

Private Attributes
double	ip_max

double	ip_min

reco::Vertex *	primaryVertex

double	sip_min

const TransientTrackBuilder *	transientTrackBuilder

bool	use3D

bool	use_sign

Detailed Description

Definition at line 23 of file ImpactParameterAlgorithm.h.

Constructor & Destructor Documentation

ImpactParameterAlgorithm::ImpactParameterAlgorithm ( const edm::ParameterSet & parameters )

Definition at line 17 of file ImpactParameterAlgorithm.cc.

References edm::ParameterSet::getParameter(), ip_max, ip_min, sip_min, use3D, and use_sign.

                                                                                     {
     ip_min       = parameters.getParameter<double>("TauImpactParameterMin");
     ip_max       = parameters.getParameter<double>("TauImpactParameterMax");
     sip_min      = parameters.getParameter<double>("TauImpactParameterSignificanceMin");
     use_sign     = parameters.getParameter<bool>("UseTauImpactParameterSign");
     use3D        = parameters.getParameter<bool>("UseTau3DImpactParameter");
 
 }

ImpactParameterAlgorithm::ImpactParameterAlgorithm ( )

Definition at line 9 of file ImpactParameterAlgorithm.cc.

References ip_max, ip_min, sip_min, use3D, and use_sign.

                                                   {
         ip_min   = -9999;
         ip_max   = 9999;
         sip_min  = 0;
         use_sign = false;
     use3D    = false; 
 }

ImpactParameterAlgorithm::~ImpactParameterAlgorithm ( )

inline

Definition at line 34 of file ImpactParameterAlgorithm.h.

34 {}

Member Function Documentation

void ImpactParameterAlgorithm::setPrimaryVertex ( reco::Vertex * pv )

inline

Definition at line 36 of file ImpactParameterAlgorithm.h.

References primaryVertex.

36 {primaryVertex = pv;}

ImpactParameterAlgorithm::primaryVertex

reco::Vertex * primaryVertex

Definition: ImpactParameterAlgorithm.h:44

void ImpactParameterAlgorithm::setTransientTrackBuilder ( const TransientTrackBuilder * builder )

Definition at line 26 of file ImpactParameterAlgorithm.cc.

References transientTrackBuilder.

Referenced by ImpactParameter::produce().

                                                                                              { 
     transientTrackBuilder = builder; 
 }

std::pair< float, reco::TauImpactParameterInfo > ImpactParameterAlgorithm::tag	(	const reco::IsolatedTauTagInfoRef &	tauRef,
		const reco::Vertex &	pv
	)

Definition at line 31 of file ImpactParameterAlgorithm.cc.

References SignedImpactParameter3D::apply(), SignedTransverseImpactParameter::apply(), TransientTrackBuilder::build(), reco::TauImpactParameterInfo::discriminator(), Measurement1D::error(), edm::hlt::Exception, edm::Ref< C, T, F >::get(), reco::TauImpactParameterTrackData::ip3D, ip_max, ip_min, metsig::jet, LogDebug, reco::LeafCandidate::px(), reco::LeafCandidate::py(), reco::LeafCandidate::pz(), reco::TauImpactParameterInfo::setIsolatedTauTag(), sip_min, reco::TauImpactParameterInfo::storeTrackData(), testEve_cfg::tracks, transientTrackBuilder, reco::TauImpactParameterTrackData::transverseIp, use3D, use_sign, Measurement1D::value(), and reco::Vertex::z().

Referenced by ImpactParameter::produce(), and Inspector.Inspector::SetTag().

                                                                                                                                        {
 
     if(transientTrackBuilder == 0){
       throw cms::Exception("NullTransientTrackBuilder") << "Transient track builder is 0. ";
     }
 
         reco::TauImpactParameterInfo resultExtended;
     resultExtended.setIsolatedTauTag(tauRef);
 
     const reco::Jet* jet = tauRef->jet().get();
     GlobalVector direction(jet->px(),jet->py(),jet->pz());
 
         const reco::TrackRefVector& tracks = tauRef->selectedTracks();
 
     edm::RefVector<reco::TrackCollection>::const_iterator iTrack;
     for(iTrack = tracks.begin(); iTrack!= tracks.end(); iTrack++){
 
           const reco::TransientTrack transientTrack = (transientTrackBuilder->build(&(**iTrack)));
 
           SignedTransverseImpactParameter stip;
       Measurement1D ip = stip.apply(transientTrack,direction,pv).second;
 
       SignedImpactParameter3D signed_ip3D;
       Measurement1D ip3D = signed_ip3D.apply(transientTrack,direction,pv).second;
       LogDebug("ImpactParameterAlgorithm::tag") << "check pv,ip3d " << pv.z() << " " << ip3D.value()  ;
       if(!use_sign){
         Measurement1D tmp2D(fabs(ip.value()),ip.error());
         ip = tmp2D;
 
         Measurement1D tmp3D(fabs(ip3D.value()),ip3D.error());
             ip3D = tmp3D;
       }
 
           reco::TauImpactParameterTrackData theData;
 
       theData.transverseIp = ip;
           theData.ip3D = ip3D;
       resultExtended.storeTrackData(*iTrack,theData);
 
     }
 
     float discriminator = resultExtended.discriminator(ip_min,ip_max,sip_min,use_sign,use3D);
 
     return std::make_pair( discriminator, resultExtended );
 }