PWGLF/SPECTRA/ChargedHadrons/dNdPt/AliPtResolAnalysisPbPb.cxx

   1 /**************************************************************************\r
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *\r
   3  *                                                                        *\r
   4  * Author: The ALICE Off-line Project.                                    *\r
   5  * Contributors are mentioned in the code where appropriate.              *\r
   6  *                                                                        *\r
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  10  * copies and that both the copyright notice and this permission notice   *\r
  11  * appear in the supporting documentation. The authors make no claims     *\r
  12  * about the suitability of this software for any purpose. It is          *\r
  13  * provided "as is" without express or implied warranty.                  *\r
  14  **************************************************************************/\r
  15 //------------------------------------------------------------------------------\r
  16 // AliPtResolAnalysisPbPb class. \r
  17 // \r
  18 // a. functionality:\r
  19 // - fills analysis control histograms\r
  20 //\r
  21 // b. data members:\r
  22 // - control histograms\r
  23 //\r
  24 // Author: J.Otwinowski 04/11/2008 \r
  25 //------------------------------------------------------------------------------\r
  26 \r
  27 #include "TH1.h"\r
  28 #include "TH2.h"\r
  29 #include "TCanvas.h"\r
  30 #include "THnSparse.h"\r
  31 \r
  32 #include "AliHeader.h"  \r
  33 #include "AliInputEventHandler.h"  \r
  34 #include "AliAnalysisManager.h"  \r
  35 #include "AliGenEventHeader.h"  \r
  36 #include "AliStack.h"  \r
  37 #include "AliESDEvent.h"  \r
  38 #include "AliMCEvent.h"  \r
  39 #include "AliESDtrackCuts.h"  \r
  40 #include "AliLog.h" \r
  41 #include "AliMultiplicity.h"\r
  42 #include "AliTracker.h"\r
  43 #include "AliCentrality.h"\r
  44 \r
  45 #include "AlidNdPtEventCuts.h"\r
  46 #include "AlidNdPtAcceptanceCuts.h"\r
  47 #include "AliPhysicsSelection.h"\r
  48 #include "AliTriggerAnalysis.h"\r
  49 \r
  50 #include "AliPWG0Helper.h"\r
  51 #include "AlidNdPtHelper.h"\r
  52 #include "AliPtResolAnalysisPbPb.h"\r
  53 \r
  54 \r
  55 using namespace std;\r
  56 \r
  57 ClassImp(AliPtResolAnalysisPbPb)\r
  58 \r
  59 //_____________________________________________________________________________\r
  60   AliPtResolAnalysisPbPb::AliPtResolAnalysisPbPb(): AlidNdPt(),\r
  61   fAnalysisFolder(0),\r
  62   fTrackParamHist(0),\r
  63   fTrackParamHist2(0),\r
  64   fCentralityEstimator(0)\r
  65 {\r
  66   // default constructor\r
  67   Init();\r
  68 }\r
  69 \r
  70 //_____________________________________________________________________________\r
  71 AliPtResolAnalysisPbPb::AliPtResolAnalysisPbPb(Char_t* name, Char_t* title): AlidNdPt(name,title),\r
  72   fAnalysisFolder(0),\r
  73   fTrackParamHist(0),\r
  74   fTrackParamHist2(0),\r
  75   fCentralityEstimator(0)\r
  76 {\r
  77   Init();\r
  78 }\r
  79 \r
  80 //_____________________________________________________________________________\r
  81 AliPtResolAnalysisPbPb::~AliPtResolAnalysisPbPb() {\r
  82   //\r
  83   // destructor\r
  84   //\r
  85   if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0;\r
  86   if(fTrackParamHist) delete fTrackParamHist; fTrackParamHist=0;\r
  87   if(fTrackParamHist2) delete fTrackParamHist2; fTrackParamHist2=0;\r
  88 }\r
  89 \r
  90 //_____________________________________________________________________________\r
  91 void AliPtResolAnalysisPbPb::Init(){\r
  92   //\r
  93   // Generic histograms to be corrected\r
  94   //\r
  95   //1/pT:#sigma(1/pT):centrality\r
  96   Int_t binsTrackParamHist[3]={400,300,11};\r
  97   Double_t minTrackParamHist[3]={0,0,0}; \r
  98   Double_t maxTrackParamHist[3]={1,0.015,100};\r
  99 \r
 100   Double_t centrBins[12] = {0.0,5.,10.,20.,30.,40.,50.,60.,70.,80.,90.,100}; \r
 101 \r
 102 \r
 103   fTrackParamHist = new THnSparseF("fTrackParamHist","1/pT:#sigma(1/pT):centrality",3,binsTrackParamHist,minTrackParamHist,maxTrackParamHist);\r
 104   fTrackParamHist->SetBinEdges(2,centrBins);\r
 105   fTrackParamHist->GetAxis(0)->SetTitle("1/pT (GeV/c)^{-1}");\r
 106   fTrackParamHist->GetAxis(1)->SetTitle("#sigma(1/pT)");\r
 107   fTrackParamHist->GetAxis(2)->SetTitle("centrality");\r
 108   fTrackParamHist->Sumw2();\r
 109   \r
 110   //pt:sigma(1/pT)*pT:centrality\r
 111   const Int_t ptNbins = 73;\r
 112   Double_t bins[74] = {0.0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 18.0, 20.0, 22.0, 24.0, 26.0, 28.0, 30.0, 32.0, 34.0, 36.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0 };\r
 113 \r
 114   Int_t binsTrackParamHist2[3]={ptNbins,200,11};\r
 115   Double_t minTrackParamHist2[3]={0,0,0}; \r
 116   Double_t maxTrackParamHist2[3]={100,0.2,100};\r
 117 \r
 118   fTrackParamHist2 = new THnSparseF("fTrackParamHist2","pT:#sigma(1/pT)*pT:centrality",3,binsTrackParamHist2,minTrackParamHist2,maxTrackParamHist2);\r
 119   fTrackParamHist2->SetBinEdges(0,bins);\r
 120   fTrackParamHist2->GetAxis(0)->SetTitle("pT (GeV/c)");\r
 121   fTrackParamHist2->GetAxis(1)->SetTitle("#sigma(1/pT)*pT");\r
 122   fTrackParamHist2->GetAxis(2)->SetTitle("centrality");\r
 123   fTrackParamHist2->Sumw2();\r
 124 \r
 125   // init folder\r
 126   fAnalysisFolder = CreateFolder("folderdNdPt","Analysis dNdPt Folder");\r
 127   \r
 128 }\r
 129 \r
 130 //_____________________________________________________________________________\r
 131 void AliPtResolAnalysisPbPb::Process(AliESDEvent *const esdEvent, AliMCEvent *const mcEvent)\r
 132 {\r
 133   //\r
 134   // Process real and/or simulated events\r
 135   //\r
 136   if(!esdEvent) {\r
 137     AliDebug(AliLog::kError, "esdEvent not available");\r
 138     return;\r
 139   }\r
 140 \r
 141   // get selection cuts\r
 142   AlidNdPtEventCuts *evtCuts = GetEventCuts(); \r
 143   AlidNdPtAcceptanceCuts *accCuts = GetAcceptanceCuts(); \r
 144   AliESDtrackCuts *esdTrackCuts = GetTrackCuts(); \r
 145 \r
 146   if(!evtCuts || !accCuts  || !esdTrackCuts) {\r
 147     AliDebug(AliLog::kError, "cuts not available");\r
 148     return;\r
 149   }\r
 150 \r
 151   // trigger selection\r
 152   Bool_t isEventTriggered = kTRUE;\r
 153   AliPhysicsSelection *physicsSelection = NULL;\r
 154   AliTriggerAnalysis* triggerAnalysis = NULL;\r
 155 \r
 156   // \r
 157   AliInputEventHandler* inputHandler = (AliInputEventHandler*) AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler();\r
 158   if (!inputHandler)\r
 159   {\r
 160     Printf("ERROR: Could not receive input handler");\r
 161     return;\r
 162   }\r
 163 \r
 164   if(evtCuts->IsTriggerRequired())  \r
 165   {\r
 166     // always MB\r
 167     isEventTriggered = inputHandler->IsEventSelected() & AliVEvent::kMB;\r
 168 \r
 169     physicsSelection = static_cast<AliPhysicsSelection*> (inputHandler->GetEventSelection());\r
 170     if(!physicsSelection) return;\r
 171     //SetPhysicsTriggerSelection(physicsSelection);\r
 172 \r
 173     if (isEventTriggered && (GetTrigger() == AliTriggerAnalysis::kV0AND)) {\r
 174       // set trigger (V0AND)\r
 175       triggerAnalysis = physicsSelection->GetTriggerAnalysis();\r
 176       if(!triggerAnalysis) return;\r
 177       isEventTriggered = triggerAnalysis->IsOfflineTriggerFired(esdEvent, GetTrigger());\r
 178     }\r
 179 \r
 180 \r
 181    // centrality determination\r
 182    Float_t centralityF = -1.;\r
 183    AliCentrality *esdCentrality = esdEvent->GetCentrality();\r
 184    centralityF = esdCentrality->GetCentralityPercentile(fCentralityEstimator.Data());\r
 185 \r
 186   // get reconstructed vertex  \r
 187   const AliESDVertex* vtxESD = 0; \r
 188   Bool_t isRecVertex = kFALSE;\r
 189   if(evtCuts->IsRecVertexRequired()) \r
 190   {\r
 191     Bool_t bRedoTPCVertex = evtCuts->IsRedoTPCVertex();\r
 192     Bool_t bUseConstraints = evtCuts->IsUseBeamSpotConstraint();\r
 193     vtxESD = AlidNdPtHelper::GetVertex(esdEvent,evtCuts,accCuts,esdTrackCuts,GetAnalysisMode(),kFALSE,bRedoTPCVertex,bUseConstraints); \r
 194     isRecVertex = AlidNdPtHelper::TestRecVertex(vtxESD, esdEvent->GetPrimaryVertexSPD(), GetAnalysisMode(), kFALSE);\r
 195   }\r
 196 \r
 197   Bool_t isEventOK = evtCuts->AcceptEvent(esdEvent,mcEvent,vtxESD) && isRecVertex; \r
 198   //printf("isEventOK %d, isEventTriggered %d \n",isEventOK, isEventTriggered);\r
 199   //printf("GetAnalysisMode() %d \n",GetAnalysisMode());\r
 200 \r
 201   //\r
 202   TObjArray *allChargedTracks=0;\r
 203   // check event cuts\r
 204   if(isEventOK && isEventTriggered)\r
 205   {\r
 206     // get all charged tracks\r
 207     allChargedTracks = AlidNdPtHelper::GetAllChargedTracks(esdEvent,GetAnalysisMode());\r
 208     if(!allChargedTracks) return;\r
 209 \r
 210     Int_t entries = allChargedTracks->GetEntries();\r
 211     //printf("entries %d \n",entries);\r
 212 \r
 213     // fill histograms\r
 214     for(Int_t i=0; i<entries;++i) \r
 215     {\r
 216       AliESDtrack *track = (AliESDtrack*)allChargedTracks->At(i);\r
 217       if(!track) continue;\r
 218       if(track->Charge()==0) continue;\r
 219 \r
 220       // only postive charged \r
 221       if(GetParticleMode() == AlidNdPtHelper::kPlus && track->Charge() < 0) \r
 222         continue;\r
 223       \r
 224       // only negative charged \r
 225       if(GetParticleMode() == AlidNdPtHelper::kMinus && track->Charge() > 0) \r
 226         continue;\r
 227 \r
 228       if(esdTrackCuts->AcceptTrack(track)) \r
 229       {\r
 230         if(accCuts->AcceptTrack(track)) \r
 231         {\r
 232           //Double_t x, par[5], cov[15];\r
 233           //track->GetExternalParameters(x, p);\r
 234           //track->GetExternalCovariance(cov);\r
 235 \r
 236           Double_t v[3] = {track->OneOverPt(),TMath::Sqrt(track->GetSigma1Pt2()),centralityF};\r
 237           fTrackParamHist->Fill(v);\r
 238 \r
 239           Double_t v2[3] = {track->Pt(),track->Pt()*TMath::Sqrt(track->GetSigma1Pt2()),centralityF};\r
 240           fTrackParamHist2->Fill(v2);\r
 241         }\r
 242       }  \r
 243     }\r
 244   }\r
 245  }\r
 246 }\r
 247 \r
 248 //_____________________________________________________________________________\r
 249 Long64_t AliPtResolAnalysisPbPb::Merge(TCollection* const list) \r
 250 {\r
 251   // Merge list of objects (needed by PROOF)\r
 252 \r
 253   if (!list)\r
 254   return 0;\r
 255 \r
 256   if (list->IsEmpty())\r
 257   return 1;\r
 258 \r
 259   TIterator* iter = list->MakeIterator();\r
 260   TObject* obj = 0;\r
 261 \r
 262   //\r
 263   //TList *collPhysSelection = new TList;\r
 264 \r
 265   // collection of generated histograms\r
 266 \r
 267   Int_t count=0;\r
 268   while((obj = iter->Next()) != 0) {\r
 269     AliPtResolAnalysisPbPb* entry = dynamic_cast<AliPtResolAnalysisPbPb*>(obj);\r
 270     if (entry == 0) continue; \r
 271     \r
 272     //\r
 273     fTrackParamHist->Add(entry->fTrackParamHist);\r
 274     fTrackParamHist2->Add(entry->fTrackParamHist2);\r
 275   }\r
 276 \r
 277 return count;\r
 278 }\r
 279 \r
 280 //_____________________________________________________________________________\r
 281 void AliPtResolAnalysisPbPb::Analyse() \r
 282 {\r
 283   // Analyse histograms\r
 284   //\r
 285   TH1::AddDirectory(kFALSE);\r
 286   TObjArray *aFolderObj = new TObjArray;\r
 287   if(!aFolderObj) return;\r
 288   \r
 289   //\r
 290   // Reconstructed event vertex\r
 291   //\r
 292   \r
 293   // export objects to analysis folder\r
 294   fAnalysisFolder = ExportToFolder(aFolderObj);\r
 295   if(!fAnalysisFolder) { \r
 296     if(aFolderObj) delete aFolderObj;\r
 297     return;\r
 298   }\r
 299 \r
 300   // delete only TObjArray\r
 301   if(aFolderObj) delete aFolderObj;\r
 302 }\r
 303 \r
 304 //_____________________________________________________________________________\r
 305 TFolder* AliPtResolAnalysisPbPb::ExportToFolder(TObjArray * const array) \r
 306 {\r
 307   // recreate folder avery time and export objects to new one\r
 308   //\r
 309   if(!array) return NULL;\r
 310 \r
 311   AliPtResolAnalysisPbPb * comp=this;\r
 312   TFolder *folder = comp->GetAnalysisFolder();\r
 313 \r
 314   TString name, title;\r
 315   TFolder *newFolder = 0;\r
 316   Int_t i = 0;\r
 317   Int_t size = array->GetSize();\r
 318 \r
 319   if(folder) { \r
 320      // get name and title from old folder\r
 321      name = folder->GetName();  \r
 322      title = folder->GetTitle();  \r
 323 \r
 324          // delete old one\r
 325      delete folder;\r
 326 \r
 327          // create new one\r
 328      newFolder = CreateFolder(name.Data(),title.Data());\r
 329      newFolder->SetOwner();\r
 330 \r
 331          // add objects to folder\r
 332      while(i < size) {\r
 333            newFolder->Add(array->At(i));\r
 334            i++;\r
 335          }\r
 336   }\r
 337 \r
 338 return newFolder;\r
 339 }\r
 340 \r
 341 //_____________________________________________________________________________\r
 342 TFolder* AliPtResolAnalysisPbPb::CreateFolder(TString name,TString title) { \r
 343 // create folder for analysed histograms\r
 344 //\r
 345 TFolder *folder = 0;\r
 346   folder = new TFolder(name.Data(),title.Data());\r
 347 \r
 348   return folder;\r
 349 }\r