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amagnan |
1.1 |
#include <iostream>
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#include <fstream>
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#include "Math/VectorUtil.h"
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#include "UserCode/HbbAnalysis/interface/JetFlavour.hh"
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namespace HbbAnalysis {
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void JetFlavour::Initialise(TFileDirectory & aDir, unsigned short aDebug, unsigned int aFlavour){
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debug_ = aDebug;
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flavour_ = aFlavour;
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partons_.clear();
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flav_.clear();
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eid_.clear();
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muid_.clear();
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p_nQuarks = aDir.make<TH1F>("p_nQuarks",";n_{q};N_{entries}",10,0,10);
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p_nAntiQuarks = aDir.make<TH1F>("p_nAntiQuarks",";n_{#bar{q}};N_{entries}",10,0,10);
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p_partonFlavour = aDir.make<TH1F>("p_partonFlavour",";pdgId of initial parton;N_{entries}",28,-6,22);
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p_parentOfStableFlavour = aDir.make<TH1F>("p_parentOfStableFlavour",";pdgId of parent of stable particle;N_{entries}",12000,-6000,6000);
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p_stableFlavour = aDir.make<TH1F>("p_stableFlavour",";pdgId of stable particle;N_{entries}",2000,-1000,1000);
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p_numberOfParentsOfStable = aDir.make<TH1F>("p_numberOfParentsOfStable",";number of parents of stable particle;N_{entries}",50,0,50);
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nTot_ = 0;
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nLight_ = 0;
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nGluon_ = 0;
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nCharm_ = 0;
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nBottom_ = 0;
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nTotal_ = 0;
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nHeavy_ = 0;
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nSemiHeavy_ = 0;
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nZEvts_ = 0;
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nWEvts_ = 0;
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if (debug_) std::cout << " --- JetFlavour::Initialise success ! " << std::endl;
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}
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unsigned int JetFlavour::fillPartons(const edm::Handle<reco::GenParticleCollection> & aGenParticles) {//genMatching
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nTot_++;
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partons_.clear();
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flav_.clear();
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eid_.clear();
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muid_.clear();
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partons_.reserve(10);
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eid_.reserve(10);
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muid_.reserve(10);
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flav_.reserve(10);
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unsigned int n_quarks = 0;
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unsigned int n_antiquarks = 0;
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bool isZ = false;
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bool isW = false;
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unsigned int lNMC = aGenParticles->size();
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if (debug_) std::cout << "* nMC = " << lNMC << std::endl;
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//loop on MC part to find b and bbar initial particles.
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for (unsigned int imc(0); imc < lNMC; imc++){//loop on MC particles
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const reco::GenParticle & lPart = (*aGenParticles).at(imc);
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//break loop if W events
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//for QCD, it should never fullfill these criteria anyway....
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if ( lPart.status() == 3 && lPart.numberOfMothers() > 1 &&
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( abs(lPart.pdgId()) == 24 ||
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abs(lPart.pdgId()) == 12 ||
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abs(lPart.pdgId()) == 14 ||
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abs(lPart.pdgId()) == 16 ) ) {
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isW = true;
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nWEvts_++;
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if (!isZ) break;
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}
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//record when Z event
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if ( lPart.status() == 3 && lPart.numberOfMothers() > 1 &&
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( abs(lPart.pdgId()) == 23 ||
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lPart.pdgId() == 11 ||
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lPart.pdgId() == 13 ||
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lPart.pdgId() == 15 ) ) {
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isZ = true;
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nZEvts_++;
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}
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//looking for the final-states partons, which will have 2 parents being the 2 initial states partons.
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if (lPart.status() == 3 && lPart.numberOfMothers() > 1 &&
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( ( flavour_ == 45 && (abs(lPart.pdgId()) == 4 || abs(lPart.pdgId()) == 5) ) ||
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( flavour_ > 3 && flavour_ < 22 && abs(lPart.pdgId()) == flavour_) ||
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( flavour_ == 3 && ( (abs(lPart.pdgId()) <= flavour_ ||
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lPart.pdgId() == 21)
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)
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)
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)
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) {
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if (debug_ > 0) {
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std::cout << "** initial parton #" << imc ;
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printParticle(lPart);
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}
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partons_.push_back(imc);
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if (lPart.pdgId() > 0) n_quarks++;
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else n_antiquarks++;
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p_partonFlavour->Fill(lPart.pdgId());
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}
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else if ((debug_ > 0 && imc < 15) || debug_ > 1) {
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std::cout << "** not selected: #" << imc;
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printParticle(lPart);
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}
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}//loop on MC particles
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//if (isW == isZ) std::cout << "*** WARNING *** isW = " << isW << ", isZ = " << isZ << std::endl;
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if ((flavour_ > 3 && flavour_ != 21) && !isZ) return 0;
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if (debug_) {
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std::cout << "nQuarks = " << n_quarks << ", n_antiQuarks = " << n_antiquarks << std::endl;
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std::cout << "nPartons = " << partons_.size() << " with indices " << std::endl;
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for (unsigned int ip(0); ip<partons_.size();ip++){
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std::cout << "#" << partons_.at(ip) << ": " ;
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printParticle(parton(aGenParticles,ip));
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}
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}
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const unsigned int nPartons = partons_.size();
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if (nPartons == 0) {
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nHeavy_++;
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return 0;
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}
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if (nPartons == 1) nSemiHeavy_++;
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nTotal_ += nPartons;
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assert (nPartons == n_quarks+n_antiquarks);
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if (flavour_ > 3) {
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assert(n_quarks >= 1 && n_antiquarks >= 1);
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assert (nPartons == 2);
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}
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p_nQuarks->Fill(n_quarks);
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p_nAntiQuarks->Fill(n_antiquarks);
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//loop on MC to find partons daughters
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unsigned int *nDaugh = new unsigned int[nPartons];
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//vectors of indices of parents/daughters
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//indices with respect to initial genParticle collection (always read in the same order)
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std::vector<unsigned int> *parents = new std::vector<unsigned int>[nPartons];
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std::vector<unsigned int> *daughters = new std::vector<unsigned int>[nPartons];
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unsigned int *flav = new unsigned int[nPartons];
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//indices of stable electron/muon, if any
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unsigned int *eid = new unsigned int[nPartons];
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unsigned int *muid = new unsigned int[nPartons];
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for (unsigned int ip(0); ip<nPartons; ip++){//loop on partons
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nDaugh[ip] = 0;
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flav[ip] = 1;
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if (flavour_ == 3 || flavour_ == 21){
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if (parton(aGenParticles,ip).pdgId() == 21) flav[ip] = 3;
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else flav[ip] = 2;
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}
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eid[ip] = 0;
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muid[ip] = 0;
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daughters[ip].clear();
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daughters[ip].reserve(250);
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parents[ip].clear();
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parents[ip].reserve(250);
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parents[ip].push_back(partons_.at(ip));
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for (unsigned int pmc = 0; pmc < parents[ip].size(); pmc++){//loop "interactively" on parents
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unsigned int lParIndex = parents[ip].at(pmc);
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if (debug_ > 2) std::cout << "** Looking for parent : #" << lParIndex << " (id " << (*aGenParticles).at(lParIndex).pdgId() << "), vector size = " << parents[ip].size() << std::endl;
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//counter to check a match is found
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unsigned int lNNotFound = 0;
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unsigned int lNTot = 0;
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for (unsigned int imc(0); imc < lNMC; imc++){//loop on parts
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const reco::GenParticle & pgen = (*aGenParticles).at(imc);
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for (unsigned int im(0); im<pgen.numberOfMothers(); im++){//loop on parents
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//recursive loop to find all parents
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if ( compareParticles(pgen.mother(im),(*aGenParticles).at(lParIndex)) ){//if par=parton
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lNTot++;
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if (pgen.status() != 1) {
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nDaugh[ip]++;
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if (debug_ > 2) {
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std::cout << "*** b daughter #" << nDaugh[ip] << " : " << imc ;
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printParticle(pgen);
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}
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//to recursively account for every possible parent until the last stable particles...
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if (std::find(parents[ip].begin(),parents[ip].end(),imc)==parents[ip].end()) parents[ip].push_back(imc);
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}
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else {
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nDaugh[ip]++;
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if (debug_ > 2) {
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std::cout << "*** b stable daughter #" << nDaugh[ip] << " : " << imc;
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printParticle(pgen);
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}
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if (std::find(daughters[ip].begin(),daughters[ip].end(),imc)==daughters[ip].end()) {
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daughters[ip].push_back(imc);
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p_stableFlavour->Fill(pgen.pdgId());
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p_numberOfParentsOfStable->Fill(pgen.numberOfMothers());
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p_parentOfStableFlavour->Fill(pgen.mother(0)->pdgId());
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if (fabs(pgen.pdgId()) == 11) {
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assert(pgen.numberOfMothers() == 1);
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}
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else if (fabs(pgen.pdgId()) == 13) {
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assert(pgen.numberOfMothers() == 1);
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}
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}
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}
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}//if par=parton
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else {
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lNNotFound++;
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lNTot++;
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}
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}//loop on parents
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}//loop on parts
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if (lNNotFound == lNTot ) {
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std::cout << " --- WARNING: no particle found for parton #" << lParIndex ;
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printParticle((*aGenParticles).at(lParIndex));
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}
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| 233 |
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}//loop on parents
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//loop on daughters to find e/mu coming from B and D mesons only
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//and associate flav=2 if b,c decay into e, 3 if mu
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| 238 |
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if (flavour_ > 3 && flavour_ != 21){//for b and c jets
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if (abs(parton(aGenParticles,ip).pdgId()) == 4) nCharm_++;
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else nBottom_++;
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| 241 |
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for (unsigned int dmc = 0; dmc < daughters[ip].size(); dmc++){//loop on daughters
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const reco::GenParticle & pgen = (*aGenParticles).at(daughters[ip].at(dmc));
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if (fabs(pgen.pdgId()) == 11 && pgen.numberOfMothers() > 1) std::cout << "***WARNING*** b Electron has more than one parent !! : " << pgen.numberOfMothers() << std::endl;
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if (fabs(pgen.pdgId()) == 13 && pgen.numberOfMothers() > 1) std::cout << "***WARNING*** b Muon has more than one parent !! : " << pgen.numberOfMothers() << std::endl;
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if (fabs(pgen.pdgId()) == 11 && pgen.numberOfMothers() == 1 && ((fabs(pgen.mother(0)->pdgId()) > 400 && fabs(pgen.mother(0)->pdgId()) < 600) || fabs(pgen.mother(0)->pdgId()) > 4000))
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{
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| 247 |
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flav[ip] = 2;
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| 248 |
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eid[ip] = daughters[ip].at(dmc);
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| 249 |
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| 250 |
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break;
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| 251 |
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}
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| 252 |
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if (fabs(pgen.pdgId()) == 13 && pgen.numberOfMothers() == 1 && ((fabs(pgen.mother(0)->pdgId()) > 400 && fabs(pgen.mother(0)->pdgId()) < 600) || fabs(pgen.mother(0)->pdgId()) > 4000))
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| 253 |
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{
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| 254 |
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flav[ip] = 3;
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| 255 |
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muid[ip] = daughters[ip].at(dmc);
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| 256 |
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break;
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| 257 |
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}
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| 258 |
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}//loop on daughters
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| 259 |
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| 260 |
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flav_.push_back(flav[ip]);
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| 261 |
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eid_.push_back(eid[ip]);
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| 262 |
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muid_.push_back(muid[ip]);
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| 263 |
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| 264 |
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}//for b and c jets
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| 265 |
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| 266 |
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| 267 |
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if (parents[ip].size() > 250) std::cout << "WARNING ! Initial default size of parents not sufficient = " << parents[ip].size() << std::endl;
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| 268 |
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if (daughters[ip].size() > 250) std::cout << "WARNING ! Initial default size of daughters not sufficient = " << daughters[ip].size() << std::endl;
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| 269 |
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| 270 |
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| 271 |
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}//loop on partons
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| 272 |
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| 273 |
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//reject QCD if B or C in the decay chain
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| 274 |
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if (flavour_ == 3 || flavour_ == 21){//for light jets
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| 275 |
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int pp = 0;
|
| 276 |
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for (std::vector<unsigned int>::iterator lPart = partons_.begin(); lPart!= partons_.end(); lPart++){//loop on partons
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| 277 |
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bool isHeavy = false;
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| 278 |
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for (unsigned int dmc = 0; dmc < daughters[pp].size(); dmc++){//loop on daughters
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| 279 |
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const reco::GenParticle & pgen = (*aGenParticles).at(daughters[pp].at(dmc));
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| 280 |
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| 281 |
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if (abs(pgen.pdgId()) == 4 || abs(pgen.pdgId()) == 5) {
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| 282 |
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//if (debug_ > 2)
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| 283 |
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std::cout << "*** Found daughter with pdgId = " << pgen.pdgId() << " in decay chain of parton #" << pp << ", deleting from partons vector and going to next parton." << std::endl;
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| 284 |
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if (abs(pgen.pdgId()) == 4) nCharm_++;
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| 285 |
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else nBottom_++;
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| 286 |
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isHeavy = true;
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| 287 |
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partons_.erase(lPart);
|
| 288 |
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break;
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| 289 |
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}
|
| 290 |
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}//loop on daughters
|
| 291 |
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if (!isHeavy) {
|
| 292 |
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flav_.push_back(flav[pp]);
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| 293 |
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//to ensure all vectors have the same size...
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| 294 |
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eid_.push_back(0);
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| 295 |
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muid_.push_back(0);
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| 296 |
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| 297 |
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if (flav[pp] == 3) nGluon_++;
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| 298 |
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else nLight_++;
|
| 299 |
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}
|
| 300 |
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pp++;
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| 301 |
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| 302 |
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}//loop on partons
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| 303 |
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| 304 |
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}//for light jets
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| 305 |
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| 306 |
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delete[] nDaugh;
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| 307 |
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delete[] parents;
|
| 308 |
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delete[] daughters;
|
| 309 |
|
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delete[] flav;
|
| 310 |
|
|
delete[] eid;
|
| 311 |
|
|
delete[] muid;
|
| 312 |
|
|
|
| 313 |
|
|
return nPartons;
|
| 314 |
|
|
|
| 315 |
|
|
|
| 316 |
|
|
}//fillPartons
|
| 317 |
|
|
|
| 318 |
|
|
|
| 319 |
|
|
std::pair<int,unsigned int> JetFlavour::partonMatchingGenJet(const pat::Jet & aJet, const edm::Handle<reco::GenParticleCollection> & aGenParticles, double aDR){//parton match with gen jet
|
| 320 |
|
|
|
| 321 |
|
|
int aIndex = -1;
|
| 322 |
|
|
double deltaRMin = 1000;
|
| 323 |
|
|
|
| 324 |
|
|
if (!aJet.genJet()) return std::pair<int,unsigned int>(aIndex,0);
|
| 325 |
|
|
|
| 326 |
|
|
for (unsigned int lPart(0); lPart<nPartons(); lPart++){
|
| 327 |
|
|
double lDR = ROOT::Math::VectorUtil::DeltaR(parton(aGenParticles,lPart).p4(),aJet.genJet()->p4());
|
| 328 |
|
|
if (lDR < deltaRMin) {
|
| 329 |
|
|
deltaRMin = lDR;
|
| 330 |
|
|
aIndex = lPart;
|
| 331 |
|
|
}
|
| 332 |
|
|
}
|
| 333 |
|
|
|
| 334 |
|
|
if (deltaRMin < aDR) return std::pair<int,unsigned int>(aIndex,partonFlavour(aIndex));
|
| 335 |
|
|
else return std::pair<int,unsigned int>(aIndex,0);
|
| 336 |
|
|
|
| 337 |
|
|
}//parton match with gen jet
|
| 338 |
|
|
|
| 339 |
|
|
unsigned int JetFlavour::leptonMatchingGenJet(const pat::Jet & aJet, const edm::Handle<reco::GenParticleCollection> & aGenParticles, double aDR){//lepton match with gen jet
|
| 340 |
|
|
|
| 341 |
|
|
int aIndex = -1;
|
| 342 |
|
|
double deltaRMin = 1000;
|
| 343 |
|
|
|
| 344 |
|
|
if (!aJet.genJet()) return 0;
|
| 345 |
|
|
|
| 346 |
|
|
if (flavour_ > 3 && flavour_ != 21) {
|
| 347 |
|
|
for (unsigned int lPart(0); lPart<nPartons(); lPart++){
|
| 348 |
|
|
if (eid_.at(lPart)){
|
| 349 |
|
|
double lDR = ROOT::Math::VectorUtil::DeltaR(stableElectron(aGenParticles,lPart).p4(),aJet.genJet()->p4());
|
| 350 |
|
|
if (lDR < deltaRMin) {
|
| 351 |
|
|
deltaRMin = lDR;
|
| 352 |
|
|
aIndex = lPart;
|
| 353 |
|
|
}
|
| 354 |
|
|
}
|
| 355 |
|
|
else if (muid_.at(lPart)){
|
| 356 |
|
|
double lDR = ROOT::Math::VectorUtil::DeltaR(stableMuon(aGenParticles,lPart).p4(),aJet.genJet()->p4());
|
| 357 |
|
|
if (lDR < deltaRMin) {
|
| 358 |
|
|
deltaRMin = lDR;
|
| 359 |
|
|
aIndex = lPart;
|
| 360 |
|
|
}
|
| 361 |
|
|
}
|
| 362 |
|
|
if (eid_.at(lPart) && muid_.at(lPart)) {
|
| 363 |
|
|
std::cerr << " ---- Problem !! found electron and muon for parton ";
|
| 364 |
|
|
printParticle(parton(aGenParticles,lPart));
|
| 365 |
|
|
}
|
| 366 |
|
|
}
|
| 367 |
|
|
|
| 368 |
|
|
if (deltaRMin < aDR) return partonFlavour(aIndex);
|
| 369 |
|
|
else return 0;
|
| 370 |
|
|
}
|
| 371 |
|
|
else return 0;
|
| 372 |
|
|
|
| 373 |
|
|
}//lepton match with gen jet
|
| 374 |
|
|
|
| 375 |
|
|
unsigned int JetFlavour::partonMatchingRecoJet(const pat::Jet & aJet, const edm::Handle<reco::GenParticleCollection> & aGenParticles, double aDR){//parton match with reco jet
|
| 376 |
|
|
|
| 377 |
|
|
int aIndex = -1;
|
| 378 |
|
|
double deltaRMin = 1000;
|
| 379 |
|
|
|
| 380 |
|
|
for (unsigned int lPart(0); lPart<nPartons(); lPart++){
|
| 381 |
|
|
double lDR = ROOT::Math::VectorUtil::DeltaR(parton(aGenParticles,lPart).p4(),aJet.p4());
|
| 382 |
|
|
if (lDR < deltaRMin) {
|
| 383 |
|
|
deltaRMin = lDR;
|
| 384 |
|
|
aIndex = lPart;
|
| 385 |
|
|
}
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
if (deltaRMin < aDR) return partonFlavour(aIndex);
|
| 389 |
|
|
else return 0;
|
| 390 |
|
|
|
| 391 |
|
|
}//parton match with reco jet
|
| 392 |
|
|
|
| 393 |
|
|
unsigned int JetFlavour::leptonMatchingRecoJet(const pat::Jet & aJet, const edm::Handle<reco::GenParticleCollection> & aGenParticles, double aDR){//lepton match with reco jet
|
| 394 |
|
|
|
| 395 |
|
|
int aIndex = -1;
|
| 396 |
|
|
double deltaRMin = 1000;
|
| 397 |
|
|
|
| 398 |
|
|
if (flavour_ > 3 && flavour_ != 21) {
|
| 399 |
|
|
for (unsigned int lPart(0); lPart<nPartons(); lPart++){
|
| 400 |
|
|
if (eid_.at(lPart)){
|
| 401 |
|
|
double lDR = ROOT::Math::VectorUtil::DeltaR(stableElectron(aGenParticles,lPart).p4(),aJet.p4());
|
| 402 |
|
|
if (lDR < deltaRMin) {
|
| 403 |
|
|
deltaRMin = lDR;
|
| 404 |
|
|
aIndex = lPart;
|
| 405 |
|
|
}
|
| 406 |
|
|
}
|
| 407 |
|
|
else if (muid_.at(lPart)){
|
| 408 |
|
|
double lDR = ROOT::Math::VectorUtil::DeltaR(stableMuon(aGenParticles,lPart).p4(),aJet.p4());
|
| 409 |
|
|
if (lDR < deltaRMin) {
|
| 410 |
|
|
deltaRMin = lDR;
|
| 411 |
|
|
aIndex = lPart;
|
| 412 |
|
|
}
|
| 413 |
|
|
}
|
| 414 |
|
|
if (eid_.at(lPart) && muid_.at(lPart)) {
|
| 415 |
|
|
std::cerr << " ---- Problem !! found electron and muon for parton ";
|
| 416 |
|
|
printParticle(parton(aGenParticles,lPart));
|
| 417 |
|
|
}
|
| 418 |
|
|
}
|
| 419 |
|
|
|
| 420 |
|
|
if (deltaRMin < aDR) return partonFlavour(aIndex);
|
| 421 |
|
|
else return 0;
|
| 422 |
|
|
}
|
| 423 |
|
|
else return 0;
|
| 424 |
|
|
|
| 425 |
|
|
}//lepton match with reco jet
|
| 426 |
|
|
|
| 427 |
|
|
bool JetFlavour::compareParticles(const reco::Candidate * aMum, const reco::GenParticle & aP)
|
| 428 |
|
|
{
|
| 429 |
|
|
|
| 430 |
|
|
if (!aMum) return false;
|
| 431 |
|
|
if ( aMum->pdgId() == aP.pdgId() &&
|
| 432 |
|
|
aMum->status() == aP.status() &&
|
| 433 |
|
|
aMum->pt() >= aP.pt()-0.001 && aMum->pt() <= aP.pt()+0.001 &&
|
| 434 |
|
|
ROOT::Math::VectorUtil::DeltaR(aMum->p4(),aP.p4()) < 0.001 )
|
| 435 |
|
|
return true;
|
| 436 |
|
|
|
| 437 |
|
|
return false;
|
| 438 |
|
|
}
|
| 439 |
|
|
|
| 440 |
|
|
void JetFlavour::printParticle(const reco::GenParticle & aP) const{
|
| 441 |
|
|
std::cout << " HistosJets::printParticle: " << std::endl <<
|
| 442 |
|
|
" ---- pid = " << aP.pdgId() << std::endl <<
|
| 443 |
|
|
" ---- status = " << aP.status() << std::endl <<
|
| 444 |
|
|
" ---- charge = " << aP.charge() << std::endl <<
|
| 445 |
|
|
" ---- pt = " << aP.pt() << std::endl <<
|
| 446 |
|
|
//" ---- eta = " << eta_ << std::endl <<
|
| 447 |
|
|
//" ---- phi = " << phi_ << std::endl <<
|
| 448 |
|
|
//" ---- vertex = " << vx_ << " " << vy_ << " " << vz_ << std::endl <<
|
| 449 |
|
|
" ---- parents : " << aP.numberOfMothers() << ". IDs,status = " ;
|
| 450 |
|
|
for (unsigned int ip(0); ip<aP.numberOfMothers(); ip++){
|
| 451 |
|
|
std::cout << aP.mother(ip)->pdgId() << "," << aP.mother(ip)->status() << " ";
|
| 452 |
|
|
}
|
| 453 |
|
|
std::cout << std::endl;
|
| 454 |
|
|
|
| 455 |
|
|
}
|
| 456 |
|
|
|
| 457 |
|
|
void JetFlavour::printSummary() {
|
| 458 |
|
|
|
| 459 |
|
|
std::cout <<
|
| 460 |
|
|
"=====================================================================" << std::endl <<
|
| 461 |
|
|
"======== Summary: " << std::endl <<
|
| 462 |
|
|
"======== Looking for partons with flavour = " << flavour_ << std::endl <<
|
| 463 |
|
|
"=====================================================================" << std::endl <<
|
| 464 |
|
|
"**** total = " << nTot_ << " events," << std::endl <<
|
| 465 |
|
|
"**** Z events = " << nZEvts_ << ", W events = " << nWEvts_ << std::endl <<
|
| 466 |
|
|
"**** discarded " << nHeavy_ << " Z events with no selected partons," << std::endl <<
|
| 467 |
|
|
"**** selected " << nSemiHeavy_ << " Z events with only 1 selected parton." << std::endl <<
|
| 468 |
|
|
"=====================================================================" << std::endl <<
|
| 469 |
|
|
"**** Selected (Z) events composed of : " << nTotal_ << " quarks, " << std::endl <<
|
| 470 |
|
|
"**** --------------------------- " << nLight_ << " u,d,s " << std::endl <<
|
| 471 |
|
|
"**** --------------------------- " << nGluon_ << " gluon " << std::endl <<
|
| 472 |
|
|
"**** --------------------------- " << nCharm_ << " c " << std::endl <<
|
| 473 |
|
|
"**** --------------------------- " << nBottom_ << " b " << std::endl <<
|
| 474 |
|
|
"=====================================================================" << std::endl;
|
| 475 |
|
|
|
| 476 |
|
|
}
|
| 477 |
|
|
|
| 478 |
|
|
|
| 479 |
|
|
|
| 480 |
|
|
}//namespace
|
| 481 |
|
|
|
| 482 |
|
|
|
