VertexHigherPtSquared Class Reference

#include <VertexHigherPtSquared.h>

Public Member Functions
bool	operator() (const TransientVertex &v1, const TransientVertex &v2) const
bool	operator() (const reco::Vertex &v1, const reco::Vertex &v2) const
double	sumPtSquared (const reco::Vertex &v) const
double	sumPtSquared (const std::vector< reco::TransientTrack > &tks) const

Detailed Description

operator for sorting TransientVertex objects in decreasing order of the sum of the squared track pT's

Definition at line 13 of file VertexHigherPtSquared.h.

Member Function Documentation

bool VertexHigherPtSquared::operator()	(	const TransientVertex &	v1,
		const TransientVertex &	v2
	)		const

Definition at line 6 of file VertexHigherPtSquared.cc.

References TransientVertex::originalTracks().

{
  //  return (sumPtSquared(v1) > sumPtSquared(v2));  V-01-05-02
  const  std::vector<reco::TransientTrack> & tks1 = v1.originalTracks();
  const  std::vector<reco::TransientTrack> & tks2 = v2.originalTracks();
  return (sumPtSquared(tks1) > sumPtSquared(tks2));
}

bool VertexHigherPtSquared::operator()	(	const reco::Vertex &	v1,
		const reco::Vertex &	v2
	)		const

Definition at line 17 of file VertexHigherPtSquared.cc.

{
  return (sumPtSquared(v1) > sumPtSquared(v2));
}

double VertexHigherPtSquared::sumPtSquared

(

const reco::Vertex &

v

)

const

Definition at line 26 of file VertexHigherPtSquared.cc.

References reco::Vertex::tracks_begin(), and reco::Vertex::tracks_end().

Referenced by PrimaryVertexProducerAlgorithm::vertices().

{
  double sum = 0.;
  double pT;
  for (Vertex::trackRef_iterator it = v.tracks_begin(); it != v.tracks_end(); it++) {
    pT = (**it).pt();
    double epT=(**it).ptError(); 
    pT=pT>epT ? pT-epT : 0;

    sum += pT*pT;
  }
  return sum;
}

double VertexHigherPtSquared::sumPtSquared

(

const std::vector< reco::TransientTrack > &

tks

)

const

Definition at line 41 of file VertexHigherPtSquared.cc.

{
  double sum = 0.;
 for (std::vector<reco::TransientTrack>::const_iterator it = tks.begin(); 
      it != tks.end(); it++) {
   double pT = (it->track()).pt();
   double epT=(it->track()).ptError(); 
   pT=pT>epT ? pT-epT : 0;

   sum += pT*pT;
 }
 return sum;
}