pf2pat::PFMETAlgo Class Reference

#include <PFMETAlgo.h>

Public Member Functions
	PFMETAlgo (const edm::ParameterSet &)
reco::MET	produce (const reco::PFCandidateCollection &pfCandidates)
	~PFMETAlgo ()

Private Attributes
double	hfCalibFactor_
	HF calibration factor (in 31X applied by PFProducer) More...
bool	verbose_
	verbose ? More...

Detailed Description

Definition at line 30 of file PFMETAlgo.h.

Constructor & Destructor Documentation

PFMETAlgo::PFMETAlgo ( const edm::ParameterSet &  iConfig )

explicit

Definition at line 17 of file PFMETAlgo.cc.

References edm::ParameterSet::getParameter(), and edm::ParameterSet::getUntrackedParameter().

                                                   {
  verbose_ = iConfig.getUntrackedParameter<bool>("verbose", false);

  hfCalibFactor_ = iConfig.getParameter<double>("hfCalibFactor");
}

PFMETAlgo::~PFMETAlgo

(

)

Definition at line 23 of file PFMETAlgo.cc.

{}

Member Function Documentation

reco::MET PFMETAlgo::produce

(

const reco::PFCandidateCollection &

pfCandidates

)

HF calibration factor (in 31X applied by PFProducer)

Definition at line 25 of file PFMETAlgo.cc.

References funct::cos(), gather_cfg::cout, reco::LeafCandidate::energy(), mps_fire::i, HLT_FULL_cff::MET, reco::PFCandidate::particleId(), reco::LeafCandidate::phi(), funct::sin(), mathSSE::sqrt(), theta(), and reco::LeafCandidate::theta().

                                                                        {
  double sumEx = 0;
  double sumEy = 0;
  double sumEt = 0;

  for (unsigned i = 0; i < pfCandidates.size(); i++) {
    const reco::PFCandidate& cand = pfCandidates[i];

    double E = cand.energy();

    if (cand.particleId() == PFCandidate::h_HF || cand.particleId() == PFCandidate::egamma_HF)
      E *= hfCalibFactor_;

    double phi = cand.phi();
    double cosphi = cos(phi);
    double sinphi = sin(phi);

    double theta = cand.theta();
    double sintheta = sin(theta);

    double et = E * sintheta;
    double ex = et * cosphi;
    double ey = et * sinphi;

    sumEx += ex;
    sumEy += ey;
    sumEt += et;
  }

  double Et = sqrt(sumEx * sumEx + sumEy * sumEy);
  XYZTLorentzVector missingEt(-sumEx, -sumEy, 0, Et);

  if (verbose_) {
    cout << "PFMETAlgo: mEx, mEy, mEt = " << missingEt.X() << ", " << missingEt.Y() << ", " << missingEt.T() << endl;
  }

  XYZPoint vertex;  // dummy vertex
  return MET(sumEt, missingEt, vertex);
}

Member Data Documentation

double pf2pat::PFMETAlgo::hfCalibFactor_

private

HF calibration factor (in 31X applied by PFProducer)

Definition at line 40 of file PFMETAlgo.h.

bool pf2pat::PFMETAlgo::verbose_

private

verbose ?

Definition at line 43 of file PFMETAlgo.h.