CORRFW/test/AliCFRsnTask.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 //-----------------------------------------------------------------------
  17 // Author : R. Vernet, Consorzio Cometa - Catania (it)
  18 //-----------------------------------------------------------------------
  19
  20
  21 #include "AliCFRsnTask.h"
  22 #include "TCanvas.h"
  23 #include "AliStack.h"
  24 #include "TParticle.h"
  25 #include "TH1I.h"
  26 #include "TChain.h"
  27 #include "AliMCEvent.h"
  28 #include "AliESDEvent.h"
  29 #include "AliCFManager.h"
  30 #include "AliCFCutBase.h"
  31 #include "AliCFContainer.h"
  32 #include "AliESDtrack.h"
  33 #include "AliLog.h"
  34 #include "AliRsnDaughter.h"
  35 #include "AliCFPair.h"
  36 #include "AliRsnParticle.h"
  37
  38 //__________________________________________________________________________
  39 AliCFRsnTask::AliCFRsnTask() :
  40   AliAnalysisTaskSE(),
  41   fRsnPDG(313),
  42   fCFManager(0x0),
  43   fHistEventsProcessed(0x0)
  44 {
  45   //
  46   //Default ctor
  47   //
  48 }
  49 //___________________________________________________________________________
  50 AliCFRsnTask::AliCFRsnTask(const Char_t* name) :
  51   AliAnalysisTaskSE(name),
  52   fRsnPDG(313),
  53   fCFManager(0x0),
  54   fHistEventsProcessed(0x0)
  55 {
  56   //
  57   // Constructor. Initialization of Inputs and Outputs
  58   //
  59   Info("AliCFRsnTask","Calling Constructor");
  60   /*
  61     DefineInput(0) and DefineOutput(0)
  62     are taken care of by AliAnalysisTaskSE constructor
  63   */
  64   DefineOutput(1,TH1I::Class());
  65   DefineOutput(2,AliCFContainer::Class());
  66   //   DefineOutput(3,TList::Class());
  67 }
  68
  69 //___________________________________________________________________________
  70 AliCFRsnTask& AliCFRsnTask::operator=(const AliCFRsnTask& c)
  71 {
  72   //
  73   // Assignment operator
  74   //
  75   if (this!=&c) {
  76     AliAnalysisTaskSE::operator=(c) ;
  77     fRsnPDG     = c.fRsnPDG;
  78     fCFManager  = c.fCFManager;
  79     fHistEventsProcessed = c.fHistEventsProcessed;
  80   }
  81   return *this;
  82 }
  83
  84 //___________________________________________________________________________
  85 AliCFRsnTask::AliCFRsnTask(const AliCFRsnTask& c) :
  86   AliAnalysisTaskSE(c),
  87   fRsnPDG(c.fRsnPDG),
  88   fCFManager(c.fCFManager),
  89   fHistEventsProcessed(c.fHistEventsProcessed)
  90 {
  91   //
  92   // Copy Constructor
  93   //
  94 }
  95
  96 //___________________________________________________________________________
  97 AliCFRsnTask::~AliCFRsnTask() {
  98   //
  99   //destructor
 100   //
 101   Info("~AliCFRsnTask","Calling Destructor");
 102   if (fCFManager)           delete fCFManager ;
 103   if (fHistEventsProcessed) delete fHistEventsProcessed ;
 104 }
 105
 106 //_________________________________________________
 107 void AliCFRsnTask::UserExec(Option_t *)
 108 {
 109   //
 110   // Main loop function
 111   //
 112   Info("UserExec","") ;
 113
 114   AliESDEvent* fESD = dynamic_cast<AliESDEvent*>(fInputEvent);
 115   if (!fESD) {
 116     Error("UserExec","NO ESD FOUND!");
 117     return;
 118   }
 119
 120   if (!fMCEvent) Error("UserExec","NO MC INFO FOUND!");
 121   fCFManager->SetEventInfo(fMCEvent);
 122
 123   AliStack*   stack   = fMCEvent->Stack();
 124
 125   // MC-event selection
 126   Double_t containerInput[2] ;
 127
 128   //loop on the MC event
 129   Info("UserExec","Looping on MC event");
 130   for (Int_t ipart=0; ipart<stack->GetNprimary(); ipart++) {
 131     AliMCParticle *mcPart  = fMCEvent->GetTrack(ipart);
 132
 133     //check the MC-level cuts
 134     if (!fCFManager->CheckParticleCuts(AliCFManager::kPartGenCuts,mcPart)) continue;
 135     containerInput[0] = mcPart->Pt();
 136     containerInput[1] = mcPart->Eta() ;
 137     //fill the container for Gen-level selection
 138     fCFManager->GetParticleContainer()->Fill(containerInput,kStepGenerated);
 139
 140     //check the Acceptance-level cuts
 141     if (!fCFManager->CheckParticleCuts(AliCFManager::kPartAccCuts,mcPart)) continue;
 142     //fill the container for Acceptance-level selection
 143     fCFManager->GetParticleContainer()->Fill(containerInput,kStepReconstructible);
 144   }
 145
 146
 147   //Now go to rec level
 148   Info("UserExec","Looping on ESD event");
 149
 150   //SET THE ESD AS EVENT INFO IN RECONSTRUCTION CUTS
 151   TObjArray* fCutsReco = fCFManager->GetParticleCutsList(AliCFManager::kPartRecCuts);
 152   TObjArray* fCutsPID = fCFManager->GetParticleCutsList(AliCFManager::kPartSelCuts);
 153   TObjArrayIter iter1(fCutsReco);
 154   TObjArrayIter iter2(fCutsPID);
 155   AliCFCutBase *cut = 0;
 156   while ( (cut = (AliCFCutBase*)iter1.Next()) ) {
 157     cut->SetEvtInfo(fESD);
 158   }
 159   while ( (cut = (AliCFCutBase*)iter2.Next()) ) {
 160     cut->SetEvtInfo(fESD);
 161   }
 162
 163   for (Int_t iTrack1 = 0; iTrack1<fESD->GetNumberOfTracks(); iTrack1++) {
 164     AliESDtrack* esdTrack1 = fESD->GetTrack(iTrack1);
 165     //track1 is negative
 166     if (esdTrack1->Charge()>=0) continue;
 167     Int_t esdLabel1 = esdTrack1->GetLabel();
 168     if (esdLabel1<0) continue;
 169
 170     for (Int_t iTrack2 = 0; iTrack2<fESD->GetNumberOfTracks(); iTrack2++) {
 171       AliESDtrack* esdTrack2 = fESD->GetTrack(iTrack2);
 172       //track2 is positive
 173       if (esdTrack2->Charge()<=0) continue;
 174       Int_t esdLabel2 = esdTrack2->GetLabel();
 175       if (esdLabel2<0) continue;
 176
 177       AliRsnDaughter* tmp1 = new AliRsnDaughter(esdTrack1);
 178       AliRsnDaughter* tmp2 = new AliRsnDaughter(esdTrack2);
 179       AliRsnDaughter track1(*tmp1);
 180       AliRsnDaughter track2(*tmp2);
 181       delete tmp1;
 182       delete tmp2;
 183
 184       TParticle *part1 = stack->Particle(esdLabel1);
 185       track1.InitParticle(part1);
 186       track1.GetParticle()->SetPDG(part1->GetPdgCode());
 187
 188       Int_t mother1 = part1->GetFirstMother();
 189       track1.GetParticle()->SetMother(mother1);
 190       if (mother1 >= 0) {
 191         TParticle *mum = stack->Particle(mother1);
 192         track1.GetParticle()->SetMotherPDG(mum->GetPdgCode());
 193       }
 194
 195       TParticle *part2 = stack->Particle(esdLabel2);
 196       track2.InitParticle(part2);
 197       track2.GetParticle()->SetPDG(part2->GetPdgCode());
 198
 199       Int_t mother2 = part2->GetFirstMother();
 200       track2.GetParticle()->SetMother(mother2);
 201       if (mother2 >= 0) {
 202         TParticle *mum = stack->Particle(mother2);
 203         track2.GetParticle()->SetMotherPDG(mum->GetPdgCode());
 204       }
 205
 206       //make a mother resonance from the 2 candidate daughters
 207       AliRsnDaughter rsn = AliRsnDaughter::Sum(track1,track2) ;
 208       AliCFPair pair(esdTrack1,esdTrack2);
 209
 210       //check if true resonance
 211       if (rsn.GetParticle()->MotherPDG() != fRsnPDG) continue;
 212       if (!fCFManager->CheckParticleCuts(AliCFManager::kPartRecCuts,&pair)) continue;
 213
 214       //check if associated MC resonance passes the cuts
 215       Int_t motherLabel=rsn.Label();
 216       if (motherLabel<0) continue ;
 217       AliMCParticle* mcRsn = fMCEvent->GetTrack(motherLabel);
 218       if (!mcRsn) continue;
 219       if (!fCFManager->CheckParticleCuts(AliCFManager::kPartGenCuts,mcRsn)) continue;
 220
 221       //fill the container
 222       containerInput[0] = rsn.Pt() ;
 223       containerInput[1] = GetRapidity(rsn.E(),rsn.Pz());
 224       fCFManager->GetParticleContainer()->Fill(containerInput,kStepReconstructed) ;
 225
 226       if (!fCFManager->CheckParticleCuts(AliCFManager::kPartSelCuts,&pair)) continue ;
 227       fCFManager->GetParticleContainer()->Fill(containerInput,kStepSelected);
 228     }
 229   }
 230
 231   fHistEventsProcessed->Fill(0);
 232   /* PostData(0) is taken care of by AliAnalysisTaskSE */
 233   PostData(1,fHistEventsProcessed) ;
 234   PostData(2,fCFManager->GetParticleContainer()) ;
 235
 236   //   TList * list = new TList();
 237   //   fCFManager->AddQAHistosToList(list);
 238   //   PostData(2,list) ;
 239 }
 240
 241
 242 //___________________________________________________________________________
 243 void AliCFRsnTask::Terminate(Option_t*)
 244 {
 245   // The Terminate() function is the last function to be called during
 246   // a query. It always runs on the client, it can be used to present
 247   // the results graphically or save the results to file.
 248
 249   Info("Terminate","");
 250
 251   Double_t max1 = fCFManager->GetParticleContainer()->ShowProjection(0,0)->GetMaximum();
 252   Double_t max2 = fCFManager->GetParticleContainer()->ShowProjection(1,0)->GetMaximum();
 253
 254   fCFManager->GetParticleContainer()->ShowProjection(0,0)->GetYaxis()->SetRangeUser(0,max1*1.2);
 255   fCFManager->GetParticleContainer()->ShowProjection(0,1)->GetYaxis()->SetRangeUser(0,max1*1.2);
 256   fCFManager->GetParticleContainer()->ShowProjection(0,2)->GetYaxis()->SetRangeUser(0,max1*1.2);
 257   fCFManager->GetParticleContainer()->ShowProjection(0,3)->GetYaxis()->SetRangeUser(0,max1*1.2);
 258
 259   fCFManager->GetParticleContainer()->ShowProjection(1,0)->GetYaxis()->SetRangeUser(0,max2*1.2);
 260   fCFManager->GetParticleContainer()->ShowProjection(1,1)->GetYaxis()->SetRangeUser(0,max2*1.2);
 261   fCFManager->GetParticleContainer()->ShowProjection(1,2)->GetYaxis()->SetRangeUser(0,max2*1.2);
 262   fCFManager->GetParticleContainer()->ShowProjection(1,3)->GetYaxis()->SetRangeUser(0,max2*1.2);
 263
 264   fCFManager->GetParticleContainer()->ShowProjection(0,0)->SetMarkerStyle(23) ;
 265   fCFManager->GetParticleContainer()->ShowProjection(0,1)->SetMarkerStyle(24) ;
 266   fCFManager->GetParticleContainer()->ShowProjection(0,2)->SetMarkerStyle(25) ;
 267   fCFManager->GetParticleContainer()->ShowProjection(0,3)->SetMarkerStyle(26) ;
 268
 269   fCFManager->GetParticleContainer()->ShowProjection(1,0)->SetMarkerStyle(23) ;
 270   fCFManager->GetParticleContainer()->ShowProjection(1,1)->SetMarkerStyle(24) ;
 271   fCFManager->GetParticleContainer()->ShowProjection(1,2)->SetMarkerStyle(25) ;
 272   fCFManager->GetParticleContainer()->ShowProjection(1,3)->SetMarkerStyle(26) ;
 273
 274   TCanvas * c =new TCanvas("c","",1400,800);
 275   c->Divide(4,2);
 276
 277   c->cd(1);
 278   fCFManager->GetParticleContainer()->ShowProjection(0,0)->Draw("p");
 279   c->cd(2);
 280   fCFManager->GetParticleContainer()->ShowProjection(0,1)->Draw("p");
 281   c->cd(3);
 282   fCFManager->GetParticleContainer()->ShowProjection(0,2)->Draw("p");
 283   c->cd(4);
 284   fCFManager->GetParticleContainer()->ShowProjection(0,3)->Draw("p");
 285   c->cd(5);
 286   fCFManager->GetParticleContainer()->ShowProjection(1,0)->Draw("p");
 287   c->cd(6);
 288   fCFManager->GetParticleContainer()->ShowProjection(1,1)->Draw("p");
 289   c->cd(7);
 290   fCFManager->GetParticleContainer()->ShowProjection(1,2)->Draw("p");
 291   c->cd(8);
 292   fCFManager->GetParticleContainer()->ShowProjection(1,3)->Draw("p");
 293
 294   c->SaveAs("plots.eps");
 295
 296   delete fHistEventsProcessed ;
 297 }
 298
 299 //___________________________________________________________________________
 300 void AliCFRsnTask::UserCreateOutputObjects() {
 301   //HERE ONE CAN CREATE OUTPUT OBJECTS, IN PARTICULAR IF THE OBJECT PARAMETERS DON'T NEED
 302   //TO BE SET BEFORE THE EXECUTION OF THE TASK
 303   //
 304   Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
 305
 306   //slot #1
 307   OpenFile(1);
 308   fHistEventsProcessed = new TH1I("fHistEventsProcessed","",1,0,1) ;
 309 }
 310
 311 //___________________________________________________________________________
 312 Double_t AliCFRsnTask::GetRapidity(Double_t energy, Double_t pz) {
 313   if (energy == pz || energy == -pz) {
 314     printf("GetRapidity : ERROR : rapidity for 4-vector with E = Pz -- infinite result");
 315     return 999;
 316   }
 317   if (energy < pz) {
 318     printf("GetRapidity : ERROR : rapidity for 4-vector with E = Pz -- infinite result");
 319     return 999;
 320   }
 321   Double_t y = 0.5 * log((energy + pz) / (energy - pz));
 322   return y;
 323 }
 324
 325