1 //_________________________________________________________________________
2 // Utility Class for transverse energy studies
3 // Base class for ESD analysis
4 // - reconstruction output
7 //*-- Authors: Oystein Djuvsland (Bergen), David Silvermyr (ORNL)
8 //_________________________________________________________________________
10 #include "AliAnalysisEtReconstructed.h"
11 #include "AliAnalysisEtCuts.h"
12 #include "AliESDtrack.h"
13 #include "AliEMCALTrack.h"
14 #include "AliESDCaloCluster.h"
16 #include "TGeoGlobalMagField.h"
18 #include "AliVEvent.h"
19 #include "AliESDEvent.h"
20 #include "AliESDtrackCuts.h"
21 #include "AliVParticle.h"
22 #include "TDatabasePDG.h"
24 #include "AliESDpid.h"
27 #include "AliAnalysisHadEtCorrections.h"
31 ClassImp(AliAnalysisEtReconstructed);
34 AliAnalysisEtReconstructed::AliAnalysisEtReconstructed() :
40 ,fHistChargedPionEnergyDeposit(0)
41 ,fHistProtonEnergyDeposit(0)
42 ,fHistAntiProtonEnergyDeposit(0)
43 ,fHistChargedKaonEnergyDeposit(0)
44 ,fHistMuonEnergyDeposit(0)
49 AliAnalysisEtReconstructed::~AliAnalysisEtReconstructed()
54 Int_t AliAnalysisEtReconstructed::AnalyseEvent(AliVEvent* ev)
55 { // analyse ESD event
57 AliESDEvent *event = dynamic_cast<AliESDEvent*>(ev);
59 Double_t protonMass = fgProtonMass;
64 TObjArray* list = fEsdtrackCutsTPC->GetAcceptedTracks(event);
66 Int_t nGoodTracks = list->GetEntries();
67 // printf("nGoodTracks %d nCaloClusters %d\n", nGoodTracks, event->GetNumberOfCaloClusters());
69 for (Int_t iTrack = 0; iTrack < nGoodTracks; iTrack++)
71 AliESDtrack *track = dynamic_cast<AliESDtrack*> (list->At(iTrack));
74 Printf("ERROR: Could not get track %d", iTrack);
81 Float_t nSigmaPion,nSigmaProton,nSigmaKaon,nSigmaElectron;
82 nSigmaPion = TMath::Abs(pID.NumberOfSigmasTPC(track,AliPID::kPion));
83 nSigmaProton = TMath::Abs(pID.NumberOfSigmasTPC(track,AliPID::kProton));
84 nSigmaKaon = TMath::Abs(pID.NumberOfSigmasTPC(track,AliPID::kKaon));
85 nSigmaElectron = TMath::Abs(pID.NumberOfSigmasTPC(track,AliPID::kElectron));
87 bool isPion = (nSigmaPion<3.0 && nSigmaProton>2.0 && nSigmaKaon>2.0);
88 bool isElectron = (nSigmaElectron<2.0 && nSigmaPion>4.0 && nSigmaProton>3.0 && nSigmaKaon>3.0);
89 bool isKaon = (nSigmaPion>3.0 && nSigmaProton>2.0 && nSigmaKaon<2.0);
90 bool isProton = (nSigmaPion>3.0 && nSigmaProton<2.0 && nSigmaKaon>2.0);
93 Int_t nItsClusters = dynamic_cast<AliESDtrack*>(track)->GetNcls(0);
94 Int_t nTPCClusters = dynamic_cast<AliESDtrack*>(track)->GetNcls(1);
98 const Double_t *pidWeights = track->PID();
100 Double_t maxpidweight = 0;
104 for (Int_t p =0; p < AliPID::kSPECIES; p++)
106 if (pidWeights[p] > maxpidweight)
108 maxpidweight = pidWeights[p];
112 if (maxpid == AliPID::kProton)
114 //by definition of ET
115 massPart = -protonMass*track->Charge();
120 Double_t et = track->E() * TMath::Sin(track->Theta()) + massPart;
121 //printf("Rec track: iTrack %03d eta %4.3f phi %4.3f nITSCl %d nTPCCl %d\n", iTrack, track->Eta(), track->Phi(), nItsClusters, nTPCClusters); // tmp/debug printout
123 if (TMath::Abs(track->Eta()) < fCuts->GetCommonEtaCut() && CheckGoodVertex(track) && nItsClusters > fCuts->GetReconstructedNItsClustersCut() && nTPCClusters > fCuts->GetReconstructedNTpcClustersCut() )
126 fChargedMultiplicity++;
129 if (maxpid == AliPID::kProton)
133 if (maxpid == AliPID::kPion)
137 if (maxpid == AliPID::kKaon)
139 fChargedKaonEt += et;
141 if (maxpid == AliPID::kMuon)
145 if (maxpid == AliPID::kElectron)
151 if (TMath::Abs(track->Eta()) < fEtaCutAcc && track->Phi() < fPhiCutAccMax && track->Phi() > fPhiCutAccMin)
153 fTotChargedEtAcc += track->E()*TMath::Sin(track->Theta()) + massPart;
156 if (maxpid == AliPID::kProton)
160 if (maxpid == AliPID::kPion)
164 if (maxpid == AliPID::kKaon)
166 fChargedKaonEtAcc += et;
168 if (maxpid == AliPID::kMuon)
172 if (maxpid == AliPID::kElectron)
174 fElectronEtAcc += et;
181 if (TrackHitsCalorimeter(track, event->GetMagneticField()))
183 Double_t phi = track->Phi();
184 Double_t pt = track->Pt();
185 // printf("Rec track hit: iTrack %03d phi %4.3f pt %4.3f\n", iTrack, phi, pt); // tmp/debug printout
186 if (track->Charge() > 0) fHistPhivsPtPos->Fill(phi, pt);
187 else fHistPhivsPtNeg->Fill(phi, pt);
191 for (Int_t iCluster = 0; iCluster < event->GetNumberOfCaloClusters(); iCluster++)
193 AliESDCaloCluster* cluster = event->GetCaloCluster(iCluster);
196 Printf("ERROR: Could not get cluster %d", iCluster);
200 if (cluster->GetType() != fClusterType) continue;
201 //if(cluster->GetTracksMatched() > 0)
202 // printf("Rec Cluster: iCluster %03d E %4.3f type %d NCells %d, nmatched: %d, distance to closest: %f\n", iCluster, cluster->E(), (int)(cluster->GetType()), cluster->GetNCells(), cluster->GetNTracksMatched(), cluster->GetEmcCpvDistance()); // tmp/debug printout
205 if (cluster->E() < fClusterEnergyCut) continue;
208 cluster->GetPosition(pos);
210 Double_t distance = cluster->GetEmcCpvDistance();
211 Int_t trackMatchedIndex = cluster->GetTrackMatchedIndex();
212 if ( cluster->IsEMCAL() ) {
213 distance = CalcTrackClusterDistance(pos, &trackMatchedIndex, event);
216 fHistTMDeltaR->Fill(distance);
217 if (distance < fTrackDistanceCut)
219 if (cluster->GetNTracksMatched() == 1 && trackMatchedIndex>0)
221 AliVTrack *track = event->GetTrack(trackMatchedIndex);
222 const Double_t *pidWeights = track->PID();
224 Double_t maxpidweight = 0;
229 for (Int_t p =0; p < AliPID::kSPECIES; p++)
231 if (pidWeights[p] > maxpidweight)
233 maxpidweight = pidWeights[p];
237 if(fCuts->GetHistMakeTreeDeposit() && fTreeDeposit)
239 fEnergyDeposited = cluster->E();
240 fEnergyTPC = track->E();
241 fCharge = track->Charge();
242 fParticlePid = maxpid;
243 fPidProb = maxpidweight;
244 fTrackPassedCut = fEsdtrackCutsTPC->AcceptTrack(dynamic_cast<AliESDtrack*>(track));
245 fTreeDeposit->Fill();
248 if(maxpidweight > fPidCut)
250 Float_t dist = TMath::Sqrt(pos[0]*pos[0] + pos[1]*pos[1]);
252 Float_t theta = TMath::ATan(pos[2]/dist)+TMath::Pi()/2;
254 Float_t et = cluster->E() * TMath::Sin(theta);
255 if(maxpid == AliPID::kProton)
258 if(track->Charge() == 1)
261 fHistProtonEnergyDeposit->Fill(cluster->E(), track->E());
263 else if(track->Charge() == -1)
266 fHistAntiProtonEnergyDeposit->Fill(cluster->E(), track->E());
269 else if(maxpid == AliPID::kPion)
272 fHistChargedPionEnergyDeposit->Fill(cluster->E(), track->E());
274 else if(maxpid == AliPID::kKaon)
277 fHistChargedKaonEnergyDeposit->Fill(cluster->E(), track->E());
279 else if(maxpid == AliPID::kMuon)
281 fHistMuonEnergyDeposit->Fill(cluster->E(), track->E());
290 if (cluster->E() > fSingleCellEnergyCut && cluster->GetNCells() == fCuts->GetCommonSingleCell()) continue;
292 cluster->GetPosition(pos);
294 // TODO: replace with TVector3, too lazy now...
296 float dist = TMath::Sqrt(pos[0]*pos[0] + pos[1]*pos[1]);
298 float theta = TMath::ATan(pos[2]/dist)+TMath::Pi()/2;
299 // float eta = TMath::Log(TMath::Abs( TMath::Tan( 0.5 * theta ) ) );
300 fTotNeutralEt += cluster->E() * TMath::Sin(theta);
301 fNeutralMultiplicity++;
306 fTotNeutralEtAcc = fTotNeutralEt;
307 fTotEt = fTotChargedEt + fTotNeutralEt;
308 fTotEtAcc = fTotChargedEtAcc + fTotNeutralEtAcc;
310 // Fill the histograms...
316 bool AliAnalysisEtReconstructed::CheckGoodVertex(AliVParticle* track)
321 dynamic_cast<AliESDtrack*>(track)->GetImpactParametersTPC(bxy,bz);
323 bool status = (TMath::Abs(track->Xv()) < fCuts->GetReconstructedVertexXCut()) &&
324 (TMath::Abs(track->Yv()) < fCuts->GetReconstructedVertexYCut()) &&
325 (TMath::Abs(track->Zv()) < fCuts->GetReconstructedVertexZCut()) &&
326 (TMath::Abs(bxy) < fCuts->GetReconstructedIPxyCut()) &&
327 (TMath::Abs(bz) < fCuts->GetReconstructedIPzCut());
332 void AliAnalysisEtReconstructed::Init()
334 AliAnalysisEt::Init();
335 fPidCut = fCuts->GetReconstructedPidCut();
336 TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 1., 1., AliMagF::k5kG));
338 cout<<"Warning! You have not set corrections. Your code will crash. You have to set the corrections."<<endl;
342 bool AliAnalysisEtReconstructed::TrackHitsCalorimeter(AliVParticle* track, Double_t magField)
343 { // propagate track to detector radius
345 AliESDtrack *esdTrack = dynamic_cast<AliESDtrack*>(track);
346 // Printf("Propagating track: eta: %f, phi: %f, pt: %f", esdTrack->Eta(), esdTrack->Phi(), esdTrack->Pt());
348 Bool_t prop = esdTrack->PropagateTo(fDetectorRadius, magField);
350 // if (prop) Printf("Track propagated, eta: %f, phi: %f, pt: %f", esdTrack->Eta(), esdTrack->Phi(), esdTrack->Pt());
352 TMath::Abs(esdTrack->Eta()) < fEtaCutAcc &&
353 esdTrack->Phi() > fPhiCutAccMin*TMath::Pi()/180. &&
354 esdTrack->Phi() < fPhiCutAccMax*TMath::Pi()/180.;
357 void AliAnalysisEtReconstructed::FillOutputList(TList* list)
358 { // add some extra histograms to the ones from base class
359 AliAnalysisEt::FillOutputList(list);
361 list->Add(fHistChargedPionEnergyDeposit);
362 list->Add(fHistProtonEnergyDeposit);
363 list->Add(fHistAntiProtonEnergyDeposit);
364 list->Add(fHistChargedKaonEnergyDeposit);
365 list->Add(fHistMuonEnergyDeposit);
368 void AliAnalysisEtReconstructed::CreateHistograms()
369 { // add some extra histograms to the ones from base class
370 AliAnalysisEt::CreateHistograms();
372 Int_t nbinsEt = 1000;
376 // possibly change histogram limits
378 nbinsEt = fCuts->GetHistNbinsParticleEt();
379 minEt = fCuts->GetHistMinParticleEt();
380 maxEt = fCuts->GetHistMaxParticleEt();
384 histname = "fHistChargedPionEnergyDeposit" + fHistogramNameSuffix;
385 fHistChargedPionEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by #pi^{+/-}", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
386 fHistChargedPionEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
387 fHistChargedPionEnergyDeposit->SetYTitle("Energy of track");
389 histname = "fHistProtonEnergyDeposit" + fHistogramNameSuffix;
390 fHistProtonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by protons", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
391 fHistProtonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
392 fHistProtonEnergyDeposit->SetYTitle("Energy of track");
394 histname = "fHistAntiProtonEnergyDeposit" + fHistogramNameSuffix;
395 fHistAntiProtonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by anti-protons", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
396 fHistAntiProtonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
397 fHistAntiProtonEnergyDeposit->SetYTitle("Energy of track");
399 histname = "fHistChargedKaonEnergyDeposit" + fHistogramNameSuffix;
400 fHistChargedKaonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by K^{+/-}", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
401 fHistChargedKaonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
402 fHistChargedKaonEnergyDeposit->SetYTitle("Energy of track");
404 histname = "fHistMuonEnergyDeposit" + fHistogramNameSuffix;
405 fHistMuonEnergyDeposit = new TH2F(histname.Data(), "Energy deposited by #mu^{+/-}", nbinsEt, minEt, maxEt, nbinsEt, minEt, maxEt);
406 fHistMuonEnergyDeposit->SetXTitle("Energy deposited in calorimeter");
407 fHistMuonEnergyDeposit->SetYTitle("Energy of track");
413 AliAnalysisEtReconstructed::CalcTrackClusterDistance(const Float_t clsPos[3],
415 const AliESDEvent *event)
416 { // calculate distance between cluster and closest track
418 Double_t trkPos[3] = {0,0,0};
420 Int_t bestTrkMatchId = -1;
421 Double_t distance = 9999; // init to a big number
424 Double_t distX = 0, distY = 0, distZ = 0;
426 for (Int_t iTrack = 0; iTrack < event->GetNumberOfTracks(); iTrack++) {
427 AliESDtrack *track = event->GetTrack(iTrack);
429 Printf("ERROR: Could not get track %d", iTrack);
433 // check for approx. eta and phi range before we propagate..
436 AliEMCALTrack *emctrack = new AliEMCALTrack(*track);
437 if (!emctrack->PropagateToGlobal(clsPos[0],clsPos[1],clsPos[2],0.,0.) ) {
440 emctrack->GetXYZ(trkPos);
441 if (emctrack) delete emctrack;
443 distX = clsPos[0]-trkPos[0];
444 distY = clsPos[1]-trkPos[1];
445 distZ = clsPos[2]-trkPos[2];
446 dist = TMath::Sqrt(distX*distX + distY*distY + distZ*distZ);
448 if (dist < distance) {
450 bestTrkMatchId = iTrack;
454 // printf("CalcTrackClusterDistance: bestTrkMatch %d origTrkMatch %d distance %f\n", bestTrkMatchId, *trkMatchId, distance);
455 *trkMatchId = bestTrkMatchId;