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JetAnaPythia.cc
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1 // Name: JetAnaPythia
2 // Description: Example of analysis of Pythia produced partons & jets
3 // Based on Kostas Kousouris' templated JetPlotsExample.
4 // Plots are tailored to needs of dijet mass and ratio analysis.
5 // Author: R. Harris
6 // Date: 28 - Oct - 2008
7 #include "RecoJets/JetAnalyzers/interface/JetAnaPythia.h"
8 #include "DataFormats/JetReco/interface/CaloJetCollection.h"
9 #include "DataFormats/JetReco/interface/PFJetCollection.h"
10 #include "DataFormats/JetReco/interface/GenJetCollection.h"
11 #include "DataFormats/JetReco/interface/CaloJet.h"
12 #include "DataFormats/JetReco/interface/PFJet.h"
13 #include "DataFormats/JetReco/interface/GenJet.h"
14 #include "DataFormats/HepMCCandidate/interface/GenParticle.h"
15 #include "SimDataFormats/GeneratorProducts/interface/GenRunInfoProduct.h"
16 #include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
17 #include "FWCore/Framework/interface/Event.h"
18 #include "FWCore/Framework/interface/Run.h"
19 #include "FWCore/ParameterSet/interface/ParameterSet.h"
20 #include <TFile.h>
21 #include <cmath>
22 using namespace edm;
23 using namespace reco;
24 using namespace std;
26 template<class Jet>
27 JetAnaPythia<Jet>::JetAnaPythia(edm::ParameterSet const& cfg)
28 {
29  JetAlgorithm = cfg.getParameter<std::string> ("JetAlgorithm");
30  HistoFileName = cfg.getParameter<std::string> ("HistoFileName");
31  NJets = cfg.getParameter<int> ("NJets");
32  debug = cfg.getParameter<bool> ("debug");
33  eventsGen = cfg.getParameter<int> ("eventsGen");
34  anaLevel = cfg.getParameter<std::string> ("anaLevel");
35  xsecGen = cfg.getParameter< vector<double> > ("xsecGen");
36  ptHatEdges = cfg.getParameter< vector<double> > ("ptHatEdges");
37 
38 }
40 template<class Jet>
41 void JetAnaPythia<Jet>::beginJob()
42 {
43  TString hname;
44  m_file = new TFile(HistoFileName.c_str(),"RECREATE");
46  const int nMassBins = 103;
47  double massBoundaries[nMassBins+1] = {1, 3, 6, 10, 16, 23, 31, 40, 50, 61, 74, 88, 103, 119, 137, 156, 176, 197, 220, 244, 270, 296, 325, 354, 386, 419, 453, 489, 526, 565, 606, 649, 693, 740, 788, 838, 890, 944, 1000, 1058, 1118, 1181, 1246, 1313, 1383, 1455, 1530, 1607, 1687, 1770, 1856, 1945, 2037, 2132, 2231, 2332, 2438, 2546, 2659, 2775, 2895, 3019, 3147, 3279, 3416, 3558, 3704, 3854, 4010, 4171, 4337, 4509, 4686, 4869, 5058, 5253, 5455, 5663, 5877, 6099, 6328, 6564, 6808, 7060, 7320, 7589, 7866, 8152, 8447, 8752, 9067, 9391, 9726, 10072, 10430, 10798, 11179, 11571, 11977, 12395, 12827, 13272, 13732, 14000};
48 
49  hname = "JetPt";
50  m_HistNames1D[hname] = new TH1F(hname,hname,500,0,5000);
51 
52  hname = "JetEta";
53  m_HistNames1D[hname] = new TH1F(hname,hname,120,-6,6);
54 
55  hname = "JetPhi";
56  m_HistNames1D[hname] = new TH1F(hname,hname,100,-M_PI,M_PI);
57 
58  hname = "NumberOfJets";
59  m_HistNames1D[hname] = new TH1F(hname,hname,100,0,100);
60 
61  hname = "DijetMass";
62  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
63 
64  hname = "DijetMassWt";
65  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
66  m_HistNames1D.find(hname)->second->Sumw2();
67 
68  hname = "DijetMassIn";
69  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
70 
71  hname = "DijetMassInWt";
72  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
73  m_HistNames1D.find(hname)->second->Sumw2();
74 
75  hname = "DijetMassOut";
76  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
77 
78  hname = "DijetMassOutWt";
79  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
80  m_HistNames1D.find(hname)->second->Sumw2();
81 
82  hname = "ResonanceMass";
83  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
84 
85  hname = "DipartonMass";
86  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
87 
88  hname = "DipartonMassWt";
89  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
90  m_HistNames1D.find(hname)->second->Sumw2();
91 
92  hname = "DipartonMassIn";
93  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
94 
95  hname = "DipartonMassInWt";
96  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
97  m_HistNames1D.find(hname)->second->Sumw2();
98 
99  hname = "DipartonMassOut";
100  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
101 
102  hname = "DipartonMassOutWt";
103  m_HistNames1D[hname] = new TH1F(hname,hname,nMassBins,massBoundaries);
104  m_HistNames1D.find(hname)->second->Sumw2();
105 
106  hname = "PtHat";
107  m_HistNames1D[hname] = new TH1F(hname,hname,1000,0,5000);
108 
109  hname = "PtHatWt";
110  m_HistNames1D[hname] = new TH1F(hname,hname,1000,0,5000);
111  m_HistNames1D.find(hname)->second->Sumw2();
112 
113  hname = "PtHatFine";
114  m_HistNames1D[hname] = new TH1F(hname,hname,5000,0,5000);
115 
116  hname = "PtHatFineWt";
117  m_HistNames1D[hname] = new TH1F(hname,hname,5000,0,5000);
118  m_HistNames1D.find(hname)->second->Sumw2();
119 
120  mcTruthTree_ = new TTree("mcTruthTree","mcTruthTree");
121  mcTruthTree_->Branch("xsec", &xsec, "xsec/F");
122  mcTruthTree_->Branch("weight", &weight, "weight/F");
123  mcTruthTree_->Branch("pt_hat", &pt_hat, "pt_hat/F");
124  mcTruthTree_->Branch("nJets", &nJets, "nJets/I");
125  mcTruthTree_->Branch("etaJet1", &etaJet1, "etaJet1/F");
126  mcTruthTree_->Branch("etaJet2", &etaJet2, "etaJet2/F");
127  mcTruthTree_->Branch("ptJet1", &ptJet1, "ptJet1/F");
128  mcTruthTree_->Branch("ptJet2", &ptJet2, "ptJet2/F");
129  mcTruthTree_->Branch("diJetMass", &diJetMass, "diJetMass/F");
130  mcTruthTree_->Branch("etaPart1", &etaPart1, "etaPart1/F");
131  mcTruthTree_->Branch("etaPart2", &etaPart2, "etaPart2/F");
132  mcTruthTree_->Branch("ptPart1", &ptPart1, "ptPart1/F");
133  mcTruthTree_->Branch("ptPart2", &ptPart2, "ptPart2/F");
134  mcTruthTree_->Branch("diPartMass", &diPartMass, "diPartMass/F");
135 
136 
137 }
139 template<class Jet>
140 void JetAnaPythia<Jet>::analyze(edm::Event const& evt, edm::EventSetup const& iSetup)
141 {
142  int notDone=1;
143  while(notDone)
144  { //while loop to allow us to tailor the analysis level for faster running.
145  TString hname;
146 
147  // Process Info
148 
149  //edm::Handle< double > genEventScale;
150  //evt.getByLabel("genEventScale", genEventScale );
151  //pt_hat = *genEventScale;
152 
153  edm::Handle<edm::HepMCProduct> MCevt;
154  evt.getByLabel("generator", MCevt);
155  HepMC::GenEvent * myGenEvent = new HepMC::GenEvent(*(MCevt->GetEvent()));
156 
157  double pthat = myGenEvent->event_scale();
158  pt_hat = float(pthat);
159 
160  delete myGenEvent;
161 
162  if(anaLevel != "generating"){ //We are not generating events, so xsec is there
163  //edm::Handle< GenRunInfoProduct > genInfoProduct;
165  //xsec = (double)genInfoProduct->externalXSecLO();
166  xsec=0.0;
167  if( ptHatEdges.size()>xsecGen.size() ){
168  for(unsigned int i_pthat = 0; i_pthat < xsecGen.size(); ++i_pthat){
169  if( pthat >= ptHatEdges[i_pthat] && pthat < ptHatEdges[i_pthat+1])xsec=float(xsecGen[i_pthat]);
170  }
171  }
172  else
173  {
174  std::cout << "Number of PtHat bin edges too small. Xsec set to zero" << std::endl;
175  }
176  }
177  else
178  {
179  xsec = xsecGen[0]; //Generating events, no xsec in event, get xsec from user input
180  }
181  if(debug)std::cout << "cross section=" <<xsec << " pb" << std::endl;
182  weight = xsec/eventsGen;
183 
184  if(debug)std::cout << "pt_hat=" <<pt_hat << std::endl;
185  hname = "PtHat";
186  FillHist1D(hname, pt_hat, 1.0);
187  hname = "PtHatFine";
188  FillHist1D(hname, pt_hat, 1.0);
189  hname = "PtHatWt";
190  FillHist1D(hname, pt_hat, weight);
191  hname = "PtHatFineWt";
192  FillHist1D(hname, pt_hat, weight);
193  if(anaLevel=="PtHatOnly")break; //ptHatOnly should be very fast
194 
195  // Jet Info
196  math::XYZTLorentzVector p4jet[2];
197  float etajet[2];
199  Handle<JetCollection> jets;
200  evt.getByLabel(JetAlgorithm,jets);
201  typename JetCollection::const_iterator i_jet;
202  int index = 0;
203 
205  hname = "NumberOfJets";
206  nJets = jets->size();
207  FillHist1D(hname,nJets,1.0);
208 
209 
210  // Two Leading Jet Info
211  for(i_jet = jets->begin(); i_jet != jets->end() && index < 2; ++i_jet)
212  {
213  hname = "JetPt";
214  FillHist1D(hname,i_jet->pt(),1.0);
215  hname = "JetEta";
216  FillHist1D(hname,i_jet->eta(),1.0);
217  hname = "JetPhi";
218  FillHist1D(hname,i_jet->phi(),1.0);
219  p4jet[index] = i_jet->p4();
220  etajet[index] = i_jet->eta();
221  if(debug)std::cout << "jet " << index+1 <<": pt=" <<i_jet->pt() << ", eta=" <<etajet[index] << std::endl;
222  index++;
223  }
224 
225  // TTree variables //
226  etaJet1 = etajet[0];
227  etaJet2 = etajet[1];
228  ptJet1 = p4jet[0].pt();
229  ptJet2 = p4jet[1].pt();
230  diJetMass = (p4jet[0]+p4jet[1]).mass();
231 
233  if(index==2&&abs(etaJet1)<1.3&&abs(etaJet2)<1.3){
234  hname = "DijetMass";
235  FillHist1D(hname,diJetMass ,1.0);
236  hname = "DijetMassWt";
237  FillHist1D(hname,diJetMass ,weight);
238  }
239 
241  if(index==2&&abs(etaJet1)<0.7&&abs(etaJet2)<0.7){
242  hname = "DijetMassIn";
243  FillHist1D(hname,diJetMass ,1.0);
244  hname = "DijetMassInWt";
245  FillHist1D(hname,diJetMass ,weight);
246  }
248  if(index==2 && (abs(etaJet1)>0.7&&abs(etaJet1)<1.3)
249  && (abs(etaJet2)>0.7&&abs(etaJet2)<1.3) ){
250  hname = "DijetMassOut";
251  FillHist1D(hname, diJetMass ,1.0);
252  hname = "DijetMassOutWt";
253  FillHist1D(hname,diJetMass ,weight);
254  }
255  if(anaLevel=="Jets")break; //Jets level for samples without genParticles
256 
257 
258  // Parton Info
259  edm::Handle<std::vector<reco::GenParticle> > genParticlesHandle_;
260  evt.getByLabel("genParticles",genParticlesHandle_);
261  if(debug)for( size_t i = 0; i < genParticlesHandle_->size(); ++ i ) {
262  const reco::GenParticle & p = (*genParticlesHandle_)[i];
263  int id = p.pdgId();
264  int st = p.status();
265  math::XYZTLorentzVector genP4 = p.p4();
266  if(i>=2&&i<=8)std::cout << "particle " << i << ": id=" << id << ", status=" << st << ", mass=" << genP4.mass() << ", pt=" << genP4.pt() << ", eta=" << genP4.eta() << std::endl;
267  }
268  // Examine the 7th particle in pythia.
269  // It should be either a resonance (abs(id)>=32) or the first outgoing parton
270  // for the processes we will consider: dijet resonances, QCD, or QCD +contact interactions.
271  const reco::GenParticle & p = (*genParticlesHandle_)[6];
272  int id = p.pdgId();
273  math::XYZTLorentzVector resonance_p, parton1_p, parton2_p;
274  if(abs(id)>=32){
276  resonance_p = p.p4();
277  hname = "ResonanceMass";
278  FillHist1D(hname,resonance_p.mass() ,1.0);
279  const reco::GenParticle & q = (*genParticlesHandle_)[7];
280  parton1_p = q.p4();
281  const reco::GenParticle & r = (*genParticlesHandle_)[8];
282  parton2_p = r.p4();
283  if(debug)std::cout << "Resonance mass=" << resonance_p.mass() << ", parton 1 pt=" << parton1_p.pt() << ", parton 2 pt=" << parton2_p.pt() << ", diparton mass=" << (parton1_p+parton2_p).mass() << std::endl;
284  }
285  else
286  {
288  parton1_p = p.p4();
289  const reco::GenParticle & q = (*genParticlesHandle_)[7];
290  parton2_p = q.p4();
291  if(debug)std::cout << "parton 1 pt=" << parton1_p.pt() << ", parton 2 pt=" << parton2_p.pt() << ", diparton mass=" << (parton1_p+parton2_p).mass() << std::endl;
292  }
293 
294  etaPart1 = parton1_p.eta();
295  etaPart2 = parton2_p.eta();
296  ptPart1 = parton1_p.pt();
297  ptPart2 = parton2_p.pt();
298  diPartMass = (parton1_p+parton2_p).mass();
300  if(abs(etaPart1)<1.3&&abs(etaPart2)<1.3){
301  hname = "DipartonMass";
302  FillHist1D(hname,diPartMass ,1.0);
303  hname = "DipartonMassWt";
304  FillHist1D(hname,diPartMass ,weight);
305  }
307  if(abs(etaPart1)<0.7&&abs(etaPart2)<0.7){
308  hname = "DipartonMassIn";
309  FillHist1D(hname,diPartMass ,1.0);
310  hname = "DipartonMassInWt";
311  FillHist1D(hname,diPartMass ,weight);
312  }
314  if( (abs(etaPart1)>0.7&&abs(etaPart1)<1.3)
315  && (abs(etaPart2)>0.7&&abs(etaPart2)<1.3) ){
316  hname = "DipartonMassOut";
317  FillHist1D(hname,diPartMass ,1.0);
318  hname = "DipartonMassOutWt";
319  FillHist1D(hname,diPartMass ,weight);
320  }
321 
322  // Fill the TTree //
323  mcTruthTree_->Fill();
324 
325  notDone=0; //We are done, exit the while loop
326  }//end of while
327 
328 }
330 template<class Jet>
331 void JetAnaPythia<Jet>::endJob()
332 {
334  if (m_file !=0)
335  {
336  m_file->cd();
337  mcTruthTree_->Write();
338  for (std::map<TString, TH1*>::iterator hid = m_HistNames1D.begin(); hid != m_HistNames1D.end(); hid++)
339  hid->second->Write();
340  delete m_file;
341  m_file = 0;
342  }
343 }
345 template<class Jet>
346 void JetAnaPythia<Jet>::FillHist1D(const TString& histName,const Double_t& value, const Double_t& wt)
347 {
348  std::map<TString, TH1*>::iterator hid=m_HistNames1D.find(histName);
349  if (hid==m_HistNames1D.end())
350  std::cout << "%fillHist -- Could not find histogram with name: " << histName << std::endl;
351  else
352  hid->second->Fill(value,wt);
353 }
355 #include "FWCore/Framework/interface/MakerMacros.h"
357 typedef JetAnaPythia<CaloJet> CaloJetAnaPythia;
358 DEFINE_FWK_MODULE(CaloJetAnaPythia);
360 typedef JetAnaPythia<GenJet> GenJetAnaPythia;
361 DEFINE_FWK_MODULE(GenJetAnaPythia);
363 typedef JetAnaPythia<PFJet> PFJetAnaPythia;
364 DEFINE_FWK_MODULE(PFJetAnaPythia);
edm::ParameterSet::getParameter
T getParameter(std::string const &) const
i
int i
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reco::LeafCandidate::pdgId
virtual int pdgId() const
PDG identifier.
Definition: LeafCandidate.h:236
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Definition: looper.py:237
JetAnaPythia::JetAnaPythia
JetAnaPythia(edm::ParameterSet const &cfg)
Definition: JetAnaPythia.cc:27
CaloJetAnaPythia
JetAnaPythia< CaloJet > CaloJetAnaPythia
Definition: JetAnaPythia.cc:357
JetAnaPythia::FillHist1D
void FillHist1D(const TString &histName, const Double_t &x, const Double_t &wt)
Definition: JetAnaPythia.cc:346
DEFINE_FWK_MODULE
#define DEFINE_FWK_MODULE(type)
Definition: MakerMacros.h:17
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virtual int status() const
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Definition: LeafCandidate.h:240
JetAnaPythia::beginJob
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Definition: JetAnaPythia.cc:41
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JetAnaPythia::analyze
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Definition: JetAnaPythia.cc:140
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Definition: AlCaHLTBitMon_QueryRunRegistry.py:255
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XYZTLorentzVectorD XYZTLorentzVector
Lorentz vector with cylindrical internal representation using pseudorapidity.
Definition: LorentzVector.h:29
fwrapper::jets
vector< PseudoJet > jets
Definition: fastjetfortran_madfks.cc:42
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Abs< T >::type abs(const T &t)
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Definition: JetAnaPythia.cc:360
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Definition: gather_cfg.py:121
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Definition: histoStyle.py:50
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Definition: JetAnaPythia.cc:363
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