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/*
* See header file for a description of this class.
*
* \author Paolo Ronchese INFN Padova
*
*/
//-----------------------
// This Class' Header --
//-----------------------
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHDecayToV0DiffMassBuilder.h"
//-------------------------------
// Collaborating Class Headers --
//-------------------------------
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHDecayGenericBuilderBase.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHDecayToTkpTknSymChargeBuilder.h"
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHRecoBuilder.h"
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHPlusMinusCandidate.h"
#include "DataFormats/Candidate/interface/Candidate.h"
//---------------
// C++ Headers --
//---------------
#include <cmath>
using namespace std;
//-------------------
// Initializations --
//-------------------
//----------------
// Constructors --
//----------------
BPHDecayToV0DiffMassBuilder::BPHDecayToV0DiffMassBuilder(const BPHEventSetupWrapper& es,
const string& daug1Name,
double daug1Mass,
double daug1Sigma,
const string& daug2Name,
double daug2Mass,
double daug2Sigma,
const BPHRecoBuilder::BPHGenericCollection* daug1Collection,
const BPHRecoBuilder::BPHGenericCollection* daug2Collection,
double expectedMass)
: BPHDecayGenericBuilderBase(es),
BPHDecayToV0Builder(es, daug1Name, daug2Name, daug1Collection, daug2Collection),
BPHDecayToTkpTknSymChargeBuilder(es,
daug1Name,
daug1Mass,
daug1Sigma,
daug2Name,
daug2Mass,
daug2Sigma,
daug1Collection,
daug2Collection,
expectedMass),
p1Mass(daug1Mass),
p2Mass(daug2Mass),
p1Sigma(daug1Sigma),
p2Sigma(daug2Sigma),
expMass(expectedMass) {}
BPHDecayToV0DiffMassBuilder::BPHDecayToV0DiffMassBuilder(const BPHEventSetupWrapper& es,
const string& daug1Name,
double daug1Mass,
double daug1Sigma,
const string& daug2Name,
double daug2Mass,
double daug2Sigma,
const vector<reco::VertexCompositeCandidate>* v0Collection,
double expectedMass,
const string& searchList)
: BPHDecayGenericBuilderBase(es),
BPHDecayToV0Builder(es, daug1Name, daug2Name, v0Collection, searchList),
BPHDecayToTkpTknSymChargeBuilder(
es, daug1Name, daug1Mass, daug1Sigma, daug2Name, daug2Mass, daug2Sigma, nullptr, nullptr, expectedMass),
p1Mass(daug1Mass),
p2Mass(daug2Mass),
p1Sigma(daug1Sigma),
p2Sigma(daug2Sigma),
expMass(expectedMass) {}
BPHDecayToV0DiffMassBuilder::BPHDecayToV0DiffMassBuilder(const BPHEventSetupWrapper& es,
const string& daug1Name,
double daug1Mass,
double daug1Sigma,
const string& daug2Name,
double daug2Mass,
double daug2Sigma,
const vector<reco::VertexCompositePtrCandidate>* vpCollection,
double expectedMass,
const string& searchList)
: BPHDecayGenericBuilderBase(es),
BPHDecayToV0Builder(es, daug1Name, daug2Name, vpCollection, searchList),
BPHDecayToTkpTknSymChargeBuilder(
es, daug1Name, daug1Mass, daug1Sigma, daug2Name, daug2Mass, daug2Sigma, nullptr, nullptr, expectedMass),
p1Mass(daug1Mass),
p2Mass(daug2Mass),
p1Sigma(daug1Sigma),
p2Sigma(daug2Sigma),
expMass(expectedMass) {}
//--------------
// Operations --
//--------------
void BPHDecayToV0DiffMassBuilder::buildFromBPHGenericCollection() {
BPHDecayToTkpTknSymChargeBuilder::build();
return;
}
BPHPlusMinusCandidatePtr BPHDecayToV0DiffMassBuilder::buildCandidate(const reco::Candidate* c1,
const reco::Candidate* c2,
const void* v0,
v0Type type) {
BPHPlusMinusCandidatePtr candX = BPHPlusMinusCandidateWrap::create(evSetup);
BPHPlusMinusCandidatePtr candY = BPHPlusMinusCandidateWrap::create(evSetup);
BPHPlusMinusCandidate* cptrX = candX.get();
BPHPlusMinusCandidate* cptrY = candY.get();
cptrX->add(p1Name, c1, sList, p1Mass, p1Sigma);
cptrX->add(p2Name, c2, sList, p2Mass, p2Sigma);
cptrY->add(p1Name, c2, sList, p1Mass, p1Sigma);
cptrY->add(p2Name, c1, sList, p2Mass, p2Sigma);
double mv0 = 0.0;
switch (type) {
case VertexCompositeCandidate:
mv0 = static_cast<const reco::VertexCompositeCandidate*>(v0)->mass();
break;
case VertexCompositePtrCandidate:
mv0 = static_cast<const reco::VertexCompositePtrCandidate*>(v0)->mass();
break;
default:
mv0 = expMass;
break;
}
double m1 = 0.0;
double m2 = 0.0;
if (p1Mass > p2Mass) {
m1 = c1->mass();
m2 = c2->mass();
} else {
m1 = c2->mass();
m2 = c1->mass();
}
// check daughter masses in V0 CompositeCandidate
double mcut = (p1Mass + p2Mass) / 2;
if ((m1 > mcut) && (m2 < mcut))
return candX;
if ((m1 < mcut) && (m2 > mcut))
return candY;
// choose combination having the best invariant mass
return (fabs(mv0 - cptrX->mass()) < fabs(mv0 - cptrY->mass()) ? candX : candY);
}
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