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source: svn/trunk/Resolutions.cpp@ 258

Last change on this file since 258 was 258, checked in by severine ovyn, 16 years ago

resolution from delphes output
File size: 13.4 KB
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1/*
2 ---- FastSim ----
3 A Fast Simulator for general purpose LHC detector
4 S. Ovyn ~~~~ severine.ovyn@uclouvain.be
5
6 Center for Particle Physics and Phenomenology (CP3)
7 Universite Catholique de Louvain (UCL)
8 Louvain-la-Neuve, Belgium
9*/
10
11/// \file Smearing.cpp
12/// \brief executable for the FastSim
13
14#include "TChain.h"
15#include "TApplication.h"
16#include "TFile.h"
17
18#include "ExRootTreeReader.h"
19#include "ExRootTreeWriter.h"
20#include "ExRootTreeBranch.h"
21#include "TreeClasses.h"
22
23#include "DataConverter.h"
24#include "HEPEVTConverter.h"
25#include "LHEFConverter.h"
26#include "STDHEPConverter.h"
27
28#include "SmearUtil.h"
29#include "JetsUtil.h"
30#include "BFieldProp.h"
31
32//#include "PseudoJet.hh"
33//#include "ClusterSequence.hh"
34
35#include<vector>
36#include<iostream>
37
38using namespace std;
39
40//------------------------------------------------------------------------------
41
42// //********************************** PYTHIA INFORMATION*********************************
43
44TSimpleArray<TRootGenParticle> TauHadr(const TClonesArray *GEN)
45 {
46 TIter it((TCollection*)GEN);
47 it.Reset();
48 TRootGenParticle *gen1;
49 TSimpleArray<TRootGenParticle> array,array2;
50
51 while((gen1 = (TRootGenParticle*) it.Next()))
52 {
53 array.Add(gen1);
54 }
55 it.Reset();
56 bool tauhad;
57 while((gen1 = (TRootGenParticle*) it.Next()))
58 {
59 tauhad=false;
60 if(abs(gen1->PID)==15)
61 {
62cout<<"au moins on a un tau "<<endl;
63 int d1=gen1->D1;
64 int d2=gen1->D2;
65cout<<"il a des filles? "<<endl;
66 if((d1 < array.GetEntries()) && (d1 > 0) && (d2 < array.GetEntries()) && (d2 > 0))
67 {
68 tauhad=true;
69 for(int d=d1; d < d2+1; d++)
70 {cout<<abs(array[d]->PID)<<" "<<endl;
71 if(abs(array[d]->PID)== pE || abs(array[d]->PID)== pMU)tauhad=false;
72 }
73 }
74 }
75 if(tauhad)array2.Add(gen1);
76 }
77 return array2;
78 }
79
80double EnergySmallCone(const vector<TLorentzVector> &towers, const float eta, const float phi,float energy_scone,float JET_seed) {
81 double Energie=0;
82 for(unsigned int i=0; i < towers.size(); i++) {
83 if(towers[i].Pt() < JET_seed) continue;
84 if((DeltaR(phi,eta,towers[i].Phi(),towers[i].Eta()) < energy_scone)) {
85 Energie += towers[i].E();
86 }
87 }
88 return Energie;
89}
90
91
92void PairingJet(TLorentzVector &JETSm, const TLorentzVector &JET, const TClonesArray *branchJet)
93{
94 JETSm.SetPxPyPzE(0,0,0,0);
95 float deltaRtest=5000;
96 TIter itJet((TCollection*)branchJet);
97 TRootJet *jet;
98 itJet.Reset();
99 while( (jet = (TRootJet*) itJet.Next()) )
100 {
101 TLorentzVector Att;
102 Att.SetPxPyPzE(jet->Px,jet->Py,jet->Pz,jet->E);
103 if(DeltaR(JET.Phi(),JET.Eta(),Att.Phi(),Att.Eta()) < deltaRtest)
104 {
105 deltaRtest = DeltaR(JET.Phi(),JET.Eta(),Att.Phi(),Att.Eta());
106 if(deltaRtest < 0.25)
107 {
108 JETSm = Att;
109 }
110 }
111 }
112}
113
114void PairingElec(TLorentzVector &ELECSm, const TLorentzVector &ELEC, const TClonesArray *branchElec)
115{
116 ELECSm.SetPxPyPzE(0,0,0,0);
117 float deltaRtest=5000;
118 TIter itElec((TCollection*)branchElec);
119 TRootElectron *elec;
120 itElec.Reset();
121 while( (elec = (TRootElectron*) itElec.Next()) )
122 {
123 TLorentzVector Att;
124 Att.SetPxPyPzE(elec->Px,elec->Py,elec->Pz,elec->E);
125 if(DeltaR(ELEC.Phi(),ELEC.Eta(),Att.Phi(),Att.Eta()) < deltaRtest)
126 {
127 deltaRtest = DeltaR(ELEC.Phi(),ELEC.Eta(),Att.Phi(),Att.Eta());
128 if(deltaRtest < 0.025)
129 {
130 ELECSm = Att;
131 }
132 }
133 }
134}
135
136void PairingMuon(TLorentzVector &MUONSm, const TLorentzVector &MUON, const TClonesArray *branchMuon)
137{
138 MUONSm.SetPxPyPzE(0,0,0,0);
139 float deltaRtest=5000;
140 TIter itMuon((TCollection*)branchMuon);
141 TRootMuon *muon;
142 itMuon.Reset();
143 while( (muon = (TRootMuon*) itMuon.Next()) )
144 {
145 TLorentzVector Att;
146 Att.SetPxPyPzE(muon->Px,muon->Py,muon->Pz,muon->E);
147 if(DeltaR(MUON.Phi(),MUON.Eta(),Att.Phi(),Att.Eta()) < deltaRtest)
148 {
149 deltaRtest = DeltaR(MUON.Phi(),MUON.Eta(),Att.Phi(),Att.Eta());
150 if(deltaRtest < 0.025)
151 {
152 MUONSm = Att;
153 }
154 }
155 }
156}
157
158unsigned int NumTracks(const TClonesArray *branchTracks, const float pt_track, const float eta, const float phi,float track_scone) {
159 unsigned int numtrack=0;
160 TIter itTrack((TCollection*)branchTracks);
161 TRootTracks *track;
162 itTrack.Reset();
163 while( (track = (TRootTracks*) itTrack.Next()) )
164 {
165 if((track->PT < pt_track )||
166 (DeltaR(phi,eta,track->Phi,track->Eta) > track_scone)
167 )continue;
168 numtrack++;
169 }
170 return numtrack;
171}
172
173
174
175int main(int argc, char *argv[])
176{
177 int appargc = 2;
178 char *appName = "Resolution";
179 char *appargv[] = {appName, "-b"};
180 TApplication app(appName, &appargc, appargv);
181
182 if(argc != 3) {
183 cout << " Usage: " << argv[0] << " input_file" << " output_file" << endl;
184 cout << " input_list - list of files in root format," << endl;
185 cout << " output_file - output file." << endl;
186 exit(1);
187 }
188
189 srand (time (NULL)); /* Initialisation du générateur */
190
191 //read the input TROOT file
192 string inputfilename(argv[1]), outputfilename(argv[2]);
193
194 if(outputfilename.find(".root") > outputfilename.length() ) {
195 cout << "output_file should be a .root file!\n";
196 return -1;
197 }
198
199
200
201 TFile *outputFile = TFile::Open(outputfilename.c_str(), "RECREATE"); // Creates the file, but should be closed just after
202 outputFile->Close();
203
204 TChain chainGEN("GEN");
205 chainGEN.Add(inputfilename.c_str());
206 ExRootTreeReader *treeReaderGEN = new ExRootTreeReader(&chainGEN);
207 TChain chain("Analysis");
208 chain.Add(inputfilename.c_str());
209 ExRootTreeReader *treeReader = new ExRootTreeReader(&chain);
210 const TClonesArray *branchJet = treeReader->UseBranch("Jet");
211 const TClonesArray *branchElec = treeReader->UseBranch("Electron");
212 const TClonesArray *branchMuon = treeReader->UseBranch("Muon");
213 const TClonesArray *branchTracks = treeReader->UseBranch("Tracks");
214 const TClonesArray *branchTowers = treeReader->UseBranch("CaloTower");
215 const TClonesArray *branchGen = treeReaderGEN->UseBranch("Particle");
216 TIter itGen((TCollection*)branchGen);
217
218 //write the output root file
219 ExRootTreeWriter *treeWriter = new ExRootTreeWriter(outputfilename, "Analysis");
220 ExRootTreeBranch *branchjet = treeWriter->NewBranch("JetPTResol", RESOLJET::Class());
221 ExRootTreeBranch *branchelec = treeWriter->NewBranch("ElecEResol", RESOLELEC::Class());
222 ExRootTreeBranch *branchmuon = treeWriter->NewBranch("MuonPTResol", RESOLMUON::Class());
223 ExRootTreeBranch *branchtaujet = treeWriter->NewBranch("TauJetPTResol", TAUHAD::Class());
224 ExRootTreeBranch *branchetmis = treeWriter->NewBranch("ETmisResol",ETMIS::Class());
225
226 TRootGenParticle *particle;
227
228 RESOLELEC * elementElec;
229 RESOLMUON *elementMuon;
230 RESOLJET *elementJet;
231 TAUHAD *elementTaujet;
232 ETMIS *elementEtmis;
233
234 int numTau=0;
235 int numTauRec=0;
236
237 RESOLution *DET = new RESOLution();
238 DET->ReadDataCard("data/Datacard_CMS.dat");
239
240
241 //Jet information
242 JetsUtil *JETRUN = new JetsUtil("data/Datacard_CMS.dat");
243
244 TLorentzVector genMomentum(0,0,0,0);//TLorentzVector containing generator level information
245 TLorentzVector recoMomentum(0,0,0,0);//TLorentzVector containing generator level information
246 LorentzVector jetMomentum;
247
248 vector<fastjet::PseudoJet> input_particlesGEN;//for FastJet algorithm
249 vector<fastjet::PseudoJet> sorted_jetsGEN;
250
251 vector<TLorentzVector> towers;
252
253 // Loop over all events
254 Long64_t entry, allEntries = treeReader->GetEntries();
255 cout << "** Chain contains " << allEntries << " events" << endl;
256 for(entry = 0; entry < allEntries; ++entry)
257 {
258 TLorentzVector PTmisReco(0,0,0,0);
259 TLorentzVector PTmisGEN(0,0,0,0);
260 treeReader->ReadEntry(entry);
261 treeReaderGEN->ReadEntry(entry);
262 treeWriter->Clear();
263 if((entry % 100) == 0 && entry > 0 ) cout << "** Processing element # " << entry << endl;
264
265 TSimpleArray<TRootGenParticle> bGen;
266 itGen.Reset();
267 TSimpleArray<TRootGenParticle> NFCentralQ;
268
269 input_particlesGEN.clear();
270 towers.clear();
271
272 // Loop over all particles in event
273 while( (particle = (TRootGenParticle*) itGen.Next()) )
274 {
275 genMomentum.SetPxPyPzE(particle->Px, particle->Py, particle->Pz, particle->E);
276
277 int pid = abs(particle->PID);
278 float eta = fabs(particle->Eta);
279
280 //input generator level particle for jet algorithm
281 if(particle->Status == 1 && eta < DET->CEN_max_calo_fwd)
282 {
283 input_particlesGEN.push_back(fastjet::PseudoJet(genMomentum.Px(),genMomentum.Py(),genMomentum.Pz(), genMomentum.E()));
284 }
285
286 //Calculate ETMIS from generated particles
287 if((pid == pNU1) || (pid == pNU2) || (pid == pNU3))PTmisGEN = PTmisGEN + genMomentum;
288
289 if( (particle->Status == 1) &&
290 ((pid != pNU1) && (pid != pNU2) && (pid != pNU3)) &&
291 (fabs(particle->Eta) < DET->CEN_max_calo_fwd)
292 )
293 {
294 eta=fabs(genMomentum.Eta());
295
296 switch(pid) {
297
298 case pE: // all electrons with eta < DET->MAX_CALO_FWD
299 PairingElec(recoMomentum,genMomentum,branchElec);
300 if(recoMomentum.Pt()>1){
301 elementElec=(RESOLELEC*) branchelec->NewEntry();
302 elementElec->E = genMomentum.E();
303 elementElec->SmearedE = recoMomentum.E();}
304 break; // case pE
305 case pMU: // all muons with eta < DET->MAX_MU
306 PairingMuon(recoMomentum,genMomentum,branchMuon);
307 if(recoMomentum.E() !=0){
308 elementMuon = (RESOLMUON*) branchmuon->NewEntry();
309 elementMuon->OverPT = (1/genMomentum.Pt());
310 elementMuon->OverSmearedPT = (1/recoMomentum.Pt());}
311 break; // case pMU
312 default:
313 break;
314 } // switch (pid)
315 }
316
317 } // while
318
319 //compute missing transverse energy from calo towers
320 TIter itCalo((TCollection*)branchTowers);
321 TRootCalo *calo;
322 itCalo.Reset();
323 TLorentzVector Att(0.,0.,0.,0.);
324 float ScalarEt=0;
325 while( (calo = (TRootCalo*) itCalo.Next()) )
326 {
327 //Att.SetPxPyPzE(towers[i].fourVector.px, towers[i].fourVector.py, towers[i].fourVector.pz, towers[i].fourVector.E);
328 Att.SetPtEtaPhiE(calo->PT,calo->Eta,calo->Phi,calo->E);
329 towers.push_back(Att);
330 if(fabs(Att.Eta()) < DET->CEN_max_calo_fwd)
331 {
332 ScalarEt = ScalarEt + Att.Et();
333 PTmisReco = PTmisReco + Att;
334 }
335 }
336
337 elementEtmis= (ETMIS*) branchetmis->NewEntry();
338 elementEtmis->Et = (PTmisGEN).Pt();
339 elementEtmis->Ex = (-PTmisGEN).Px();
340 elementEtmis->SEt = ScalarEt;
341
342 elementEtmis->EtSmeare = (PTmisReco).Pt()-(PTmisGEN).Pt();
343 elementEtmis->ExSmeare = (-PTmisReco).Px()-(PTmisGEN).Px();
344
345 //*****************************
346
347 sorted_jetsGEN=JETRUN->RunJets(input_particlesGEN);
348
349 TSimpleArray<TRootGenParticle> TausHadr = TauHadr(branchGen);
350cout<<"nombre de tau-jets "<<TausHadr.GetEntries()<<endl;
351
352 TLorentzVector JETreco(0,0,0,0);
353 for (unsigned int i = 0; i < sorted_jetsGEN.size(); i++) {
354 TLorentzVector JETgen(0,0,0,0);
355 JETgen.SetPxPyPzE(sorted_jetsGEN[i].px(),sorted_jetsGEN[i].py(),sorted_jetsGEN[i].pz(),sorted_jetsGEN[i].E());
356 PairingJet(JETreco,JETgen,branchJet);
357 if(JETreco.Pt()>1)
358 {
359 elementJet= (RESOLJET*) branchjet->NewEntry();
360 elementJet->PT = JETgen.Et();
361 elementJet->SmearedPT = JETreco.Et()/JETgen.Et();
362 }
363 }
364 numTau = numTau+TausHadr.GetEntries();
365
366 TIter itJet((TCollection*)branchJet);
367 TRootJet *jet;
368 itJet.Reset();
369//cout<<"a"<<endl;
370 while( (jet = (TRootJet*) itJet.Next()) )
371 {
372//cout<<"b"<<endl;
373 TLorentzVector JETT(0,0,0,0);
374 JETT.SetPxPyPzE(jet->Px,jet->Py,jet->Pz,jet->E);
375 if(fabs(JETT.Eta()) < (DET->CEN_max_tracker - DET->TAU_track_scone))
376 {
377//cout<<"c"<<endl;
378 for(Int_t i=0; i<TausHadr.GetEntries();i++)
379 {
380//cout<<"d"<<endl;
381 if(DeltaR(TausHadr[i]->Phi,TausHadr[i]->Eta,JETT.Phi(),JETT.Eta())<0.1)
382 {
383//cout<<"e"<<endl;
384 elementTaujet= (TAUHAD*) branchtaujet->NewEntry();
385 elementTaujet->EnergieCen = (EnergySmallCone(towers,JETT.Eta(),JETT.Phi(),DET->TAU_energy_scone,DET->JET_seed)/JETT.E());
386 elementTaujet->NumTrack = NumTracks(branchTracks,DET->TAU_track_pt,JETT.Eta(),JETT.Phi(),DET->TAU_track_scone);
387 if( (EnergySmallCone(towers,JETT.Eta(),JETT.Phi(),DET->TAU_energy_scone,DET->JET_seed)/JETT.E()) > 0.95
388 && (NumTracks(branchTracks,DET->TAU_track_pt,JETT.Eta(),JETT.Phi(),DET->TAU_track_scone))==1)numTauRec++;
389//cout<<"f"<<endl;
390
391 }
392//cout<<"g"<<endl;
393 }
394 }
395//cout<<"h"<<endl;
396
397
398 } // for itJet : loop on all jets
399//cout<<"i"<<endl;
400
401 treeWriter->Fill();
402 } // Loop over all events
403 treeWriter->Write();
404float frac = numTauRec/numTau;
405cout<<numTauRec<<endl;
406cout<<numTau<<endl;
407
408 cout << "** Exiting..." << endl;
409 cout<<frac<<endl;
410
411
412 delete treeWriter;
413 delete treeReader;
414 delete DET;
415}
416
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