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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/BPHDecayToChargedXXbarBuilder.h"
//-------------------------------
// Collaborating Class Headers --
//-------------------------------
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHDecayGenericBuilderBase.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHParticlePtSelect.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHParticleEtaSelect.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHMassSelect.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHChi2Select.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHParticleMasses.h"
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHRecoBuilder.h"
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHPlusMinusCandidate.h"
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHTrackReference.h"
#include "DataFormats/Candidate/interface/Candidate.h"
#include "DataFormats/Math/interface/LorentzVector.h"
//---------------
// C++ Headers --
//---------------
using namespace std;
//-------------------
// Initializations --
//-------------------
//----------------
// Constructors --
//----------------
BPHDecayToChargedXXbarBuilder::BPHDecayToChargedXXbarBuilder(const BPHEventSetupWrapper& es,
const string& dPosName,
const string& dNegName,
double daugMass,
double daugSigma,
const BPHRecoBuilder::BPHGenericCollection* posCollection,
const BPHRecoBuilder::BPHGenericCollection* negCollection)
: BPHDecayGenericBuilderBase(es),
ptMin(-1.0),
etaMax(10.0),
dzMax(1.0),
pName(dPosName),
nName(dNegName),
dMass(daugMass),
dSigma(daugSigma),
pCollection(posCollection),
nCollection(negCollection) {}
//--------------
// Operations --
//--------------
/// set cuts
void BPHDecayToChargedXXbarBuilder::setPtMin(double pt) {
outdated = true;
ptMin = pt;
return;
}
void BPHDecayToChargedXXbarBuilder::setEtaMax(double eta) {
outdated = true;
etaMax = eta;
return;
}
void BPHDecayToChargedXXbarBuilder::setDzMax(double dz) {
outdated = true;
dzMax = dz;
return;
}
/// build candidates
void BPHDecayToChargedXXbarBuilder::fillRecList() {
// extract basic informations from input collections
vector<Particle*> pList;
vector<Particle*> nList;
addParticle(pCollection, +1, pList);
addParticle(nCollection, -1, nList);
int iPos;
int iNeg;
int nPos = pList.size();
int nNeg = nList.size();
double massMin = getMassMin();
double massMax = getMassMax();
double mSqMin = massMin * massMin * 0.9;
double mSqMax = massMax * massMax * 1.1;
if (mSqMin < 0.0)
mSqMin = 0.0;
for (iPos = 0; iPos < nPos; ++iPos) {
Particle* pc = pList[iPos];
const reco::Track* pt = pc->track;
double px = pc->px;
double py = pc->py;
double pz = pc->pz;
double pe = pc->en;
for (iNeg = 0; iNeg < nNeg; ++iNeg) {
Particle* nc = nList[iNeg];
const reco::Track* nt = nc->track;
if (fabs(nt->dz() - pt->dz()) > 1.0)
continue;
double nx = nc->px;
double ny = nc->py;
double nz = nc->pz;
double ne = nc->en;
const float tx = px + nx;
const float ty = py + ny;
const float tz = pz + nz;
const float te = pe + ne;
const float m2 = (te * te) - ((tx * tx) + (ty * ty) + (tz * tz));
if (m2 < mSqMin)
continue;
if (m2 > mSqMax)
continue;
BPHPlusMinusCandidatePtr rc = BPHPlusMinusCandidateWrap::create(evSetup);
rc->add(pName, pc->cand, dMass, dSigma);
rc->add(nName, nc->cand, dMass, dSigma);
double mass = rc->composite().mass();
if (mass < massMin)
continue;
if (mass > massMax)
continue;
if (!chi2Sel->accept(*rc))
continue;
recList.push_back(rc);
}
}
for (iPos = 0; iPos < nPos; ++iPos)
delete pList[iPos];
for (iNeg = 0; iNeg < nNeg; ++iNeg)
delete nList[iNeg];
return;
}
void BPHDecayToChargedXXbarBuilder::addParticle(const BPHRecoBuilder::BPHGenericCollection* collection,
int charge,
vector<Particle*>& list) {
int i;
int n = collection->size();
list.reserve(n);
for (i = 0; i < n; ++i) {
const reco::Candidate& cand = collection->get(i);
int q = cand.charge();
if ((charge > 0) && (q <= 0))
continue;
if ((charge < 0) && (q >= 0))
continue;
const reco::Candidate::LorentzVector p4 = cand.p4();
if (p4.pt() < ptMin)
continue;
if (p4.eta() > etaMax)
continue;
const reco::Track* tk = BPHTrackReference::getTrack(cand, "cfhp");
if (tk == nullptr)
continue;
double px = p4.px();
double py = p4.py();
double pz = p4.pz();
list.push_back(new Particle(&cand, tk, px, py, pz, sqrt((px * px) + (py * py) + (pz * pz) + (dMass * dMass))));
}
return;
}
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