/data/doxygen/doxygen-1.7.3/gen/CMSSW_4_2_8/src/RecoBTag/SecondaryVertex/src/GhostTrackComputer.cc File Reference

#include <iostream>
#include <cstddef>
#include <string>
#include <cmath>
#include <vector>
#include <Math/VectorUtil.h>
#include "FWCore/Utilities/interface/Exception.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "DataFormats/Math/interface/Vector3D.h"
#include "DataFormats/Math/interface/LorentzVector.h"
#include "DataFormats/GeometryCommonDetAlgo/interface/Measurement1D.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/GeometryVector/interface/GlobalVector.h"
#include "DataFormats/GeometryVector/interface/VectorUtil.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "DataFormats/BTauReco/interface/TrackIPTagInfo.h"
#include "DataFormats/BTauReco/interface/SecondaryVertexTagInfo.h"
#include "DataFormats/BTauReco/interface/TaggingVariable.h"
#include "DataFormats/BTauReco/interface/VertexTypes.h"
#include "RecoBTag/SecondaryVertex/interface/ParticleMasses.h"
#include "RecoBTag/SecondaryVertex/interface/TrackSorting.h"
#include "RecoBTag/SecondaryVertex/interface/TrackSelector.h"
#include "RecoBTag/SecondaryVertex/interface/TrackKinematics.h"
#include "RecoBTag/SecondaryVertex/interface/V0Filter.h"
#include "RecoBTag/SecondaryVertex/interface/GhostTrackComputer.h"

Go to the source code of this file.

Functions
static void	addMeas (std::pair< double, double > &sum, Measurement1D meas)
static edm::ParameterSet	dropDeltaR (const edm::ParameterSet &pset)
static double	etaRel (const math::XYZVector &dir, const math::XYZVector &track)

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Function Documentation

static void addMeas	(	std::pair< double, double > &	sum,
		Measurement1D	meas
	)		[static]

Definition at line 99 of file GhostTrackComputer.cc.

References Measurement1D::error(), Measurement1D::value(), and CommonMethods::weight().

Referenced by GhostTrackComputer::operator()().

{
        double weight = 1. / meas.error();
        weight *= weight;
        sum.first += weight * meas.value();
        sum.second += weight;
}

static edm::ParameterSet dropDeltaR

(

const edm::ParameterSet &

pset

)

[static]

Definition at line 35 of file GhostTrackComputer.cc.

References edm::ParameterSet::addParameter().

{
        edm::ParameterSet psetCopy(pset);
        psetCopy.addParameter<double>("jetDeltaRMax", 99999.0);
        return psetCopy;
}

static double etaRel	(	const math::XYZVector &	dir,
		const math::XYZVector &	track
	)		[static]

Definition at line 90 of file GhostTrackComputer.cc.

References relval_parameters_module::energy, funct::log(), reco::ParticleMasses::piPlus, and mathSSE::sqrt().

Referenced by GhostTrackComputer::operator()().

{
        double momPar = dir.Dot(track);
        double energy = std::sqrt(track.Mag2() +
                                  ROOT::Math::Square(ParticleMasses::piPlus));

        return 0.5 * std::log((energy + momPar) / (energy - momPar));
}