JetVertexMain Class Reference

#include <JetVertexMain.h>

Public Member Functions
	JetVertexMain (const edm::ParameterSet &parameters)
std::pair< double, bool >	Main (const reco::CaloJet &jet, edm::Handle< reco::TrackCollection > tracks, double SIGNAL_V_Z, double SIGNAL_V_Z_Error)
	~JetVertexMain ()

Private Member Functions
double	DeltaR (double eta1, double eta2, double phi1, double phi2)
double	Track_Pt (double px, double py)

Private Attributes
int	Algo
double	cone_size
double	cutDeltaZ
double	cutSigmaZ
std::string	cutType
bool	discriminator
double	threshold

Detailed Description

Definition at line 13 of file JetVertexMain.h.

Constructor & Destructor Documentation

JetVertexMain()

JetVertexMain::JetVertexMain

(

const edm::ParameterSet &

parameters

)

Definition at line 12 of file JetVertexMain.cc.

                                                           {
  cutSigmaZ = parameters.getParameter<double>("JV_sigmaZ");
  cutDeltaZ = parameters.getParameter<double>("JV_deltaZ");
  threshold = parameters.getParameter<double>("JV_alpha_threshold");
  cone_size = parameters.getParameter<double>("JV_cone_size");
  Algo = parameters.getParameter<int>("JV_type_Algo");
  cutType = parameters.getParameter<std::string>("JV_cutType");
}

References AlCaHLTBitMon_QueryRunRegistry::string, and remoteMonitoring_LED_IterMethod_cfg::threshold.

~JetVertexMain()

JetVertexMain::~JetVertexMain ( )

inline

Definition at line 17 of file JetVertexMain.h.

{};

Member Function Documentation

DeltaR()

double JetVertexMain::DeltaR ( double  eta1, double  eta2, double  phi1, double  phi2  )

private

Definition at line 88 of file JetVertexMain.cc.

                                                                               {
  double dphi = fabs(phi1 - phi2);
  if (dphi > M_PI)
    dphi = 2 * M_PI - dphi;
  double deta = fabs(eta1 - eta2);
  return sqrt(dphi * dphi + deta * deta);
}

References HLT_FULL_cff::eta1, HLT_FULL_cff::eta2, M_PI, and mathSSE::sqrt().

Main()

std::pair< double, bool > JetVertexMain::Main	(	const reco::CaloJet &	jet,
		edm::Handle< reco::TrackCollection >	tracks,
		double	SIGNAL_V_Z,
		double	SIGNAL_V_Z_Error
	)

Definition at line 21 of file JetVertexMain.cc.

                                                                        {
  std::pair<double, bool> parameter;
 
  double jet_et = jet.et();
  double jet_phi = jet.phi();
  double jet_eta = jet.eta();
 
  //  cout<<"JET: "<<jet_et<<endl;
  double Pt_jets_X = 0.;
  double Pt_jets_Y = 0.;
  double Pt_jets_X_tot = 0.;
  double Pt_jets_Y_tot = 0.;
 
  TrackCollection::const_iterator track = tracks->begin();
 
  if (!tracks->empty()) {
    for (; track != tracks->end(); track++) {
      double Vertex_Z = track->vz();
      double Vertex_Z_Error = track->dzError();
      double track_eta = track->eta();
      double track_phi = track->phi();
 
      if (DeltaR(track_eta, jet_eta, track_phi, jet_phi) < cone_size) {
        double DeltaZ = Vertex_Z - signal_vert_Z;
        double DeltaZ_Error = sqrt((Vertex_Z_Error * Vertex_Z_Error) + (signal_vert_z_error * signal_vert_z_error));
        Pt_jets_X_tot += track->px();
        Pt_jets_Y_tot += track->py();
        if (cutType == "sig")
          discriminator = (fabs(DeltaZ) / DeltaZ_Error) <= cutSigmaZ;
        else
          discriminator = fabs(DeltaZ) < cutDeltaZ;
 
        if (discriminator) {
          Pt_jets_X += track->px();
          Pt_jets_Y += track->py();
        }
      }
    }
  }
  double Var = -1;
 
  if (Algo == 1)
    Var = Track_Pt(Pt_jets_X, Pt_jets_Y) / jet_et;
  else if (Algo == 2) {
    if (Track_Pt(Pt_jets_X_tot, Pt_jets_Y_tot) != 0)
      Var = Track_Pt(Pt_jets_X, Pt_jets_Y) / Track_Pt(Pt_jets_X_tot, Pt_jets_Y_tot);
    else
      std::cout << "[Jets] JetVertexAssociation: Warning! problems for  Algo = 2: possible division by zero .."
                << std::endl;
  } else {
    Var = Track_Pt(Pt_jets_X, Pt_jets_Y) / jet_et;
    std::cout << "[Jets] JetVertexAssociation: Warning! Algo = " << Algo << " not found; using Algo = 1" << std::endl;
  }
 
  //  cout<<"Var = "<<Var<<endl;
 
  if (Var >= threshold)
    parameter = std::pair<double, bool>(Var, true);
  else
    parameter = std::pair<double, bool>(Var, false);
 
  return parameter;
}

References gather_cfg::cout, electronAnalyzer_cfi::DeltaR, HLT_FULL_cff::DeltaZ, PDWG_TauSkim_cff::discriminator, metsig::jet, pfMETsysShiftCorrections_cfi::parameter, mathSSE::sqrt(), remoteMonitoring_LED_IterMethod_cfg::threshold, HLT_FULL_cff::track, tracks, and common_cff::Var().

Referenced by cms::JetVertexAssociation::produce().

Track_Pt()

double JetVertexMain::Track_Pt ( double  px, double  py  )

private

Definition at line 96 of file JetVertexMain.cc.

{ return sqrt(px * px + py * py); }

References multPhiCorr_741_25nsDY_cfi::px, multPhiCorr_741_25nsDY_cfi::py, and mathSSE::sqrt().

Member Data Documentation

Algo

int JetVertexMain::Algo

private

Definition at line 33 of file JetVertexMain.h.

cone_size

double JetVertexMain::cone_size

private

Definition at line 32 of file JetVertexMain.h.

cutDeltaZ

double JetVertexMain::cutDeltaZ

private

Definition at line 30 of file JetVertexMain.h.

cutSigmaZ

double JetVertexMain::cutSigmaZ

private

Definition at line 29 of file JetVertexMain.h.

cutType

std::string JetVertexMain::cutType

private

Definition at line 34 of file JetVertexMain.h.

discriminator

bool JetVertexMain::discriminator

private

Definition at line 35 of file JetVertexMain.h.

threshold

double JetVertexMain::threshold

private

Definition at line 31 of file JetVertexMain.h.

Referenced by utils.StatisticalTest::get_status().