3 // Emcal jet analysis base task.
7 #include "AliAnalysisTaskEmcalJet.h"
10 #include <TClonesArray.h>
14 #include "AliAnalysisManager.h"
15 #include "AliCentrality.h"
16 #include "AliEMCALGeometry.h"
17 #include "AliESDEvent.h"
18 #include "AliEmcalJet.h"
20 #include "AliRhoParameter.h"
21 #include "AliVCluster.h"
22 #include "AliVEventHandler.h"
23 #include "AliVParticle.h"
25 ClassImp(AliAnalysisTaskEmcalJet)
27 //________________________________________________________________________
28 AliAnalysisTaskEmcalJet::AliAnalysisTaskEmcalJet() :
29 AliAnalysisTaskEmcal("AliAnalysisTaskEmcalJet"),
45 fLeadingHadronType(0),
50 // Default constructor.
53 //________________________________________________________________________
54 AliAnalysisTaskEmcalJet::AliAnalysisTaskEmcalJet(const char *name, Bool_t histo) :
55 AliAnalysisTaskEmcal(name, histo),
71 fLeadingHadronType(0),
76 // Standard constructor.
79 //________________________________________________________________________
80 AliAnalysisTaskEmcalJet::~AliAnalysisTaskEmcalJet()
85 //________________________________________________________________________
86 Bool_t AliAnalysisTaskEmcalJet::AcceptBiasJet(AliEmcalJet *jet) const
88 // Accept jet with a bias.
90 if (fLeadingHadronType == 0) {
91 if (jet->MaxTrackPt() < fPtBiasJetTrack) return kFALSE;
93 else if (fLeadingHadronType == 1) {
94 if (jet->MaxClusterPt() < fPtBiasJetClus) return kFALSE;
97 if (jet->MaxTrackPt() < fPtBiasJetTrack && jet->MaxClusterPt() < fPtBiasJetClus) return kFALSE;
103 //________________________________________________________________________
104 Float_t* AliAnalysisTaskEmcalJet::GenerateFixedBinArray(Int_t n, Float_t min, Float_t max) const
106 Float_t *bins = new Float_t[n+1];
108 Float_t binWidth = (max-min)/n;
110 for (Int_t i = 1; i <= n; i++) {
111 bins[i] = bins[i-1]+binWidth;
117 //________________________________________________________________________
118 Double_t AliAnalysisTaskEmcalJet::GetLeadingHadronPt(AliEmcalJet *jet) const
120 if (fLeadingHadronType == 0) // charged leading hadron
121 return jet->MaxTrackPt();
122 else if (fLeadingHadronType == 1) // neutral leading hadron
123 return jet->MaxClusterPt();
124 else // charged or neutral
125 return jet->MaxPartPt();
128 //________________________________________________________________________
129 Bool_t AliAnalysisTaskEmcalJet::AcceptJet(AliEmcalJet *jet) const
131 // Return true if jet is accepted.
133 if (jet->Pt() <= fJetPtCut)
135 if (jet->Area() <= fJetAreaCut)
137 if (jet->AreaEmc()<fAreaEmcCut)
139 if (!AcceptBiasJet(jet))
141 if (jet->MaxTrackPt() > fMaxTrackPt || jet->MaxClusterPt() > fMaxClusterPt)
144 Double_t jetPhi = jet->Phi();
145 Double_t jetEta = jet->Eta();
147 if (fJetMinPhi < 0) // if limits are given in (-pi, pi) range
148 jetPhi -= TMath::Pi() * 2;
150 return (Bool_t)(jetEta > fJetMinEta && jetEta < fJetMaxEta && jetPhi > fJetMinPhi && jetPhi < fJetMaxPhi);
153 //________________________________________________________________________
154 AliRhoParameter *AliAnalysisTaskEmcalJet::GetRhoFromEvent(const char *name)
156 // Get rho from event.
158 AliRhoParameter *rho = 0;
160 if (!sname.IsNull()) {
161 rho = dynamic_cast<AliRhoParameter*>(InputEvent()->FindListObject(sname));
163 AliWarning(Form("%s: Could not retrieve rho with name %s!", GetName(), name));
170 //________________________________________________________________________
171 void AliAnalysisTaskEmcalJet::ExecOnce()
173 // Init the analysis.
175 AliAnalysisTaskEmcal::ExecOnce();
177 if (fPercAreaCut >= 0) {
178 if (fJetAreaCut >= 0)
179 AliInfo(Form("%s: jet area cut will be calculated as a percentage of the average area, given value will be overwritten", GetName()));
180 fJetAreaCut = fPercAreaCut * fJetRadius * fJetRadius * TMath::Pi();
185 if (fAnaType == kTPC) {
186 SetJetEtaLimits(-0.5, 0.5);
187 SetJetPhiLimits(-10, 10);
189 else if (fAnaType == kEMCAL && fGeom) {
190 SetJetEtaLimits(fGeom->GetArm1EtaMin() + fJetRadius, fGeom->GetArm1EtaMax() - fJetRadius);
191 SetJetPhiLimits(fGeom->GetArm1PhiMin() * TMath::DegToRad() + fJetRadius, fGeom->GetArm1PhiMax() * TMath::DegToRad() - fJetRadius);
194 if (!fRhoName.IsNull() && !fRho) {
195 fRho = dynamic_cast<AliRhoParameter*>(InputEvent()->FindListObject(fRhoName));
197 AliError(Form("%s: Could not retrieve rho %s!", GetName(), fRhoName.Data()));
198 fInitialized = kFALSE;
203 if (!fJetsName.IsNull() && !fJets) {
204 fJets = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(fJetsName));
206 AliError(Form("%s: Could not retrieve jets %s!", GetName(), fJetsName.Data()));
207 fInitialized = kFALSE;
210 else if (!fJets->GetClass()->GetBaseClass("AliEmcalJet")) {
211 AliError(Form("%s: Collection %s does not contain AliEmcalJet objects!", GetName(), fJetsName.Data()));
213 fInitialized = kFALSE;
219 //________________________________________________________________________
220 Int_t* AliAnalysisTaskEmcalJet::GetSortedArray(TClonesArray *array) const
222 // Get the leading jets.
224 static Float_t pt[9999];
225 static Int_t indexes[9999];
230 const Int_t n = array->GetEntriesFast();
235 if (array->GetClass()->GetBaseClass("AliEmcalJet")) {
237 for (Int_t i = 0; i < n; i++) {
241 AliEmcalJet* jet = static_cast<AliEmcalJet*>(array->At(i));
244 AliError(Form("Could not receive jet %d", i));
251 pt[i] = jet->Pt() - fRhoVal * jet->Area();
255 else if (array->GetClass()->GetBaseClass("AliVTrack")) {
257 for (Int_t i = 0; i < n; i++) {
261 AliVTrack* track = static_cast<AliVTrack*>(array->At(i));
264 AliError(Form("Could not receive track %d", i));
268 if (!AcceptTrack(track))
275 else if (array->GetClass()->GetBaseClass("AliVCluster")) {
277 for (Int_t i = 0; i < n; i++) {
281 AliVCluster* cluster = static_cast<AliVCluster*>(array->At(i));
284 AliError(Form("Could not receive cluster %d", i));
288 if (!AcceptCluster(cluster))
291 TLorentzVector nPart;
292 cluster->GetMomentum(nPart, const_cast<Double_t*>(fVertex));
298 TMath::Sort(n, pt, indexes);
300 if (pt[indexes[0]] == -FLT_MAX)
306 //________________________________________________________________________
307 Bool_t AliAnalysisTaskEmcalJet::IsJetCluster(AliEmcalJet* jet, Int_t iclus, Bool_t sorted) const
309 // Return true if cluster is in jet.
311 for (Int_t i = 0; i < jet->GetNumberOfClusters(); ++i) {
312 Int_t ijetclus = jet->ClusterAt(i);
313 if (sorted && ijetclus > iclus)
315 if (ijetclus == iclus)
321 //________________________________________________________________________
322 Bool_t AliAnalysisTaskEmcalJet::IsJetTrack(AliEmcalJet* jet, Int_t itrack, Bool_t sorted) const
324 // Return true if track is in jet.
326 for (Int_t i = 0; i < jet->GetNumberOfTracks(); ++i) {
327 Int_t ijettrack = jet->TrackAt(i);
328 if (sorted && ijettrack > itrack)
330 if (ijettrack == itrack)
336 //________________________________________________________________________
337 Bool_t AliAnalysisTaskEmcalJet::RetrieveEventObjects()
339 // Retrieve objects from event.
341 if (!AliAnalysisTaskEmcal::RetrieveEventObjects())
345 fRhoVal = fRho->GetVal();