PWGCF/Correlations/DPhi/PhiEffMC/AliAnalysisTaskPhiEffMc.cxx

   1 /**************************************************************************
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   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 //-----------------------------------------------------------------
  17 //         AliAnalysisTaskPhiEffMc class
  18 //-----------------------------------------------------------------
  19
  20 #include "TChain.h"
  21 #include "TTree.h"
  22 #include "TLegend.h"
  23 #include "TH1F.h"
  24 #include "TH2F.h"
  25 #include "TH3F.h"
  26 #include "THnSparse.h"
  27 #include "TCanvas.h"
  28 #include "TObjArray.h"
  29 #include "AliAnalysisTask.h"
  30 #include "AliAnalysisManager.h"
  31 #include "AliVTrack.h"
  32 #include "AliAODMCParticle.h"
  33 #include "AliVParticle.h"
  34 #include "AliAODEvent.h"
  35 #include "AliAODInputHandler.h"
  36 #include "AliAnalysisTaskPhiEffMc.h"
  37 #include "AliAnalysisTaskESDfilter.h"
  38 #include "AliAnalysisDataContainer.h"
  39 #include "AliCentrality.h"
  40 #include "TProof.h"
  41 #include "AliPID.h"
  42 #include "AliVEvent.h"
  43 #include "AliPIDResponse.h"
  44 #include "PWGLF/SPECTRA/PiKaPr/TestAOD/AliSpectraAODTrackCuts.h"
  45 #include "PWGLF/SPECTRA/PiKaPr/TestAOD/AliSpectraAODEventCuts.h"
  46 #include "AliStack.h"
  47 #include <TMCProcess.h>
  48 #include "AliAnalyseLeadingTrackUE.h"
  49
  50 #include <iostream>
  51
  52 using namespace std;
  53
  54 ClassImp(AliAnalysisTaskPhiEffMc)
  55
  56 //________________________________________________________________________
  57 AliAnalysisTaskPhiEffMc::AliAnalysisTaskPhiEffMc(const char *name) : AliAnalysisTaskSE(name),
  58   fAOD(0x0),
  59   fIsMC(0),
  60   fOutput(0x0),
  61   fHelperPID(0x0),
  62   fTrackCuts(0x0),
  63   fEventCuts(0x0)
  64 {
  65   // Default constructor
  66
  67
  68   DefineInput(0, TChain::Class());
  69   DefineOutput(1, TList::Class());
  70   DefineOutput(2, AliHelperPID::Class());
  71   DefineOutput(3, AliSpectraAODEventCuts::Class());
  72   DefineOutput(4, AliSpectraAODTrackCuts::Class());
  73 }
  74 //________________________________________________________________________
  75 //________________________________________________________________________
  76 void AliAnalysisTaskPhiEffMc::UserCreateOutputObjects()
  77 {
  78   Printf("\n\n\n\n\n\n In CreateOutput Object:");
  79
  80   if (!fTrackCuts) AliFatal("Track Cuts should be set in the steering macro");
  81   if (!fEventCuts) AliFatal("Event Cuts should be set in the steering macro");
  82   if (!fHelperPID)  AliFatal("HelperPID should be set in the steering macro");
  83
  84   fOutput = new TList();
  85   fOutput->SetOwner();
  86   fOutput->SetName("BlaBla");
  87
  88   // event histogram
  89   const Int_t nEventDim = 4;
  90   //                      cent  vz MCmult RecoMult
  91   Int_t nEventBins[4] =   { 10,  41,  50,   50};
  92   Double_t nEventMin[4] = {  0, -10,   0,    0};
  93   Double_t nEventMax[4] = {100,  10, 100,  100};
  94
  95   THnSparseF* hEvent = new THnSparseF("hEvent", "hEvent", nEventDim, nEventBins, nEventMin, nEventMax);
  96   hEvent->GetAxis(0)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
  97   hEvent->GetAxis(1)->SetTitle("v_{z} (cm)");
  98   hEvent->GetAxis(2)->SetTitle("# MC particles");
  99   hEvent->GetAxis(3)->SetTitle("# reconstructed tracks");
 100   fOutput->Add(hEvent);
 101
 102   TH3F* hKcorr = new TH3F("hKcorr","hKcorr",100,0,10,100,0,10,100,0,10);
 103   hKcorr->GetXaxis()->SetTitle("#phi p_{T} (GeV/c)");
 104   hKcorr->GetYaxis()->SetTitle("k+ p_{T} (GeV/c)");
 105   hKcorr->GetZaxis()->SetTitle("k- p_{T} (GeV/c)");
 106   fOutput->Add(hKcorr);
 107
 108   // single charged particles -- bins for THnSparse histograms
 109   const Int_t nTrackDim = 6;
 110   //                                PID ID, pt, y, cent, eta, phi
 111   Int_t    nTrackBins[nTrackDim] =   {   7, 50, 20,  10,  20, 30};
 112   Double_t nTrackMin[nTrackDim] =    {-3.5,  0, -1,   0,  -1,  0};
 113   Double_t nTrackMax[nTrackDim] =    { 3.5,  5,  1, 100,   1, 2*TMath::Pi()};
 114
 115   // single charged particles -- Monte Carlo particles
 116   THnSparseF* hTrackMc = new THnSparseF("hTrackMc", "hTrackMc", nTrackDim, nTrackBins, nTrackMin, nTrackMax);
 117   hTrackMc->GetAxis(0)->SetTitle("PID ID * Charge");
 118   hTrackMc->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 119   hTrackMc->GetAxis(2)->SetTitle("y");
 120   hTrackMc->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 121   hTrackMc->GetAxis(4)->SetTitle("#eta");
 122   hTrackMc->GetAxis(5)->SetTitle("#phi (rad)");
 123   fOutput->Add(hTrackMc);
 124
 125   // single charged particles -- reconstructed tracks
 126   THnSparseF* hTrackReco = new THnSparseF("hTrackReco", "hTrackReco", nTrackDim, nTrackBins, nTrackMin, nTrackMax);
 127   hTrackReco->GetAxis(0)->SetTitle("PID ID * Charge");
 128   hTrackReco->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 129   hTrackReco->GetAxis(2)->SetTitle("y");
 130   hTrackReco->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 131   hTrackReco->GetAxis(4)->SetTitle("#eta");
 132   hTrackReco->GetAxis(5)->SetTitle("#phi (rad)");
 133   fOutput->Add(hTrackReco);
 134
 135   // single charged particles -- Monte Carlo particles matched to reconstructed tracks
 136   THnSparseF* hTrackMatch = new THnSparseF("hTrackMatch", "hTrackMatch", nTrackDim, nTrackBins, nTrackMin, nTrackMax);
 137   hTrackMatch->GetAxis(0)->SetTitle("PID ID * Charge");
 138   hTrackMatch->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 139   hTrackMatch->GetAxis(2)->SetTitle("y");
 140   hTrackMatch->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 141   hTrackMatch->GetAxis(4)->SetTitle("#eta");
 142   hTrackMatch->GetAxis(5)->SetTitle("#phi (rad)");
 143   fOutput->Add(hTrackMatch);
 144
 145   // kaon pairs -- bins for THnSparse histograms
 146   const Int_t nPairDim = 7;
 147   //                             InvMass, pt, y, cent, eta, phi,          pair ID
 148   Int_t    nPairBins[nPairDim] =   { 100, 50, 20,  10,  20, 30,              3};
 149   Double_t nPairMin[nPairDim] =    {0.98,  0, -1,   0,  -1,  0,           -1.5};
 150   Double_t nPairMax[nPairDim] =    { 1.1,  5,  1, 100,   1, 2*TMath::Pi(), 1.5};
 151   // pair ID = 0 unlike sign k+k-
 152   //           1 like sign pos k+k+
 153   //          -1 like sign neg k-k-
 154
 155   // kaon pairs -- Monte Carlo particles -- real phi's
 156   THnSparseF* hPairMcPhi = new THnSparseF("hPairMcPhi", "hPairMcPhi", nPairDim, nPairBins, nPairMin, nPairMax);
 157   hPairMcPhi->GetAxis(0)->SetTitle("Invariant Mass (GeV/c/c)");
 158   hPairMcPhi->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 159   hPairMcPhi->GetAxis(2)->SetTitle("y");
 160   hPairMcPhi->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 161   hPairMcPhi->GetAxis(4)->SetTitle("#eta");
 162   hPairMcPhi->GetAxis(5)->SetTitle("#phi (rad)");
 163   hPairMcPhi->GetAxis(6)->SetTitle("pair ID");
 164   fOutput->Add(hPairMcPhi);
 165
 166   // kaon pairs -- Monte Carlo particles -- real phi's with kaon daughters that pass pt and eta cuts
 167   THnSparseF* hPairMcPhiCuts = new THnSparseF("hPairMcPhiCuts", "hPairMcPhiCuts", nPairDim, nPairBins, nPairMin, nPairMax);
 168   hPairMcPhiCuts->GetAxis(0)->SetTitle("Invariant Mass (GeV/c/c)");
 169   hPairMcPhiCuts->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 170   hPairMcPhiCuts->GetAxis(2)->SetTitle("y");
 171   hPairMcPhiCuts->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 172   hPairMcPhiCuts->GetAxis(4)->SetTitle("#eta");
 173   hPairMcPhiCuts->GetAxis(5)->SetTitle("#phi (rad)");
 174   hPairMcPhiCuts->GetAxis(6)->SetTitle("pair ID");
 175   fOutput->Add(hPairMcPhiCuts);
 176
 177   // kaon pairs -- Monte Carlo particles -- phi's reconstructed from MC kaons
 178   THnSparseF* hPairMc = new THnSparseF("hPairMc", "hPairMc", nPairDim, nPairBins, nPairMin, nPairMax);
 179   hPairMc->GetAxis(0)->SetTitle("Invariant Mass (GeV/c/c)");
 180   hPairMc->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 181   hPairMc->GetAxis(2)->SetTitle("y");
 182   hPairMc->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 183   hPairMc->GetAxis(4)->SetTitle("#eta");
 184   hPairMc->GetAxis(5)->SetTitle("#phi (rad)");
 185   hPairMc->GetAxis(6)->SetTitle("pair ID");
 186   fOutput->Add(hPairMc);
 187
 188   // kaon pairs -- reconstructed tracks
 189   THnSparseF* hPairReco = new THnSparseF("hPairReco", "hPairReco", nPairDim, nPairBins, nPairMin, nPairMax);
 190   hPairReco->GetAxis(0)->SetTitle("Invariant Mass (GeV/c/c)");
 191   hPairReco->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 192   hPairReco->GetAxis(2)->SetTitle("y");
 193   hPairReco->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 194   hPairReco->GetAxis(4)->SetTitle("#eta");
 195   hPairReco->GetAxis(5)->SetTitle("#phi (rad)");
 196   hPairReco->GetAxis(6)->SetTitle("pair ID");
 197   fOutput->Add(hPairReco);
 198
 199   // kaon pairs -- Monte Carlo particles matched to reconstructed tracks
 200   THnSparseF* hPairMatch = new THnSparseF("hPairMatch", "hPairMatch", nPairDim, nPairBins, nPairMin, nPairMax);
 201   hPairMatch->GetAxis(0)->SetTitle("Invariant Mass (GeV/c/c)");
 202   hPairMatch->GetAxis(1)->SetTitle("p_{T} (GeV/c)");
 203   hPairMatch->GetAxis(2)->SetTitle("y");
 204   hPairMatch->GetAxis(3)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 205   hPairMatch->GetAxis(4)->SetTitle("#eta");
 206   hPairMatch->GetAxis(5)->SetTitle("#phi (rad)");
 207   hPairMatch->GetAxis(6)->SetTitle("pair ID");
 208   fOutput->Add(hPairMatch);
 209
 210   PostData(1, fOutput);
 211   PostData(2, fHelperPID);
 212   PostData(3, fEventCuts);
 213   PostData(4, fTrackCuts);
 214 }
 215
 216 //________________________________________________________________________
 217 void AliAnalysisTaskPhiEffMc::UserExec(Option_t *)
 218 {
 219   // main event loop
 220   fAOD = dynamic_cast<AliAODEvent*>(fInputEvent);
 221   if (!fAOD) {
 222     AliWarning("ERROR: AliAODEvent not available \n");
 223     return;
 224   }
 225
 226   if (strcmp(fAOD->ClassName(), "AliAODEvent"))
 227     {
 228       AliFatal("Not processing AODs");
 229     }
 230
 231   if(!fEventCuts->IsSelected(fAOD,fTrackCuts))return;//event selection
 232
 233   Double_t cent = fEventCuts->GetCent();
 234
 235   THnSparseF* hEvent = (THnSparseF*)fOutput->FindObject("hEvent");
 236   THnSparseF* hTrackMc = (THnSparseF*)fOutput->FindObject("hTrackMc");
 237   THnSparseF* hTrackReco = (THnSparseF*)fOutput->FindObject("hTrackReco");
 238   THnSparseF* hTrackMatch = (THnSparseF*)fOutput->FindObject("hTrackMatch");
 239   THnSparseF* hPairMcPhi = (THnSparseF*)fOutput->FindObject("hPairMcPhi");
 240   THnSparseF* hPairMcPhiCuts = (THnSparseF*)fOutput->FindObject("hPairMcPhiCuts");
 241   THnSparseF* hPairMc = (THnSparseF*)fOutput->FindObject("hPairMc");
 242   THnSparseF* hPairReco = (THnSparseF*)fOutput->FindObject("hPairReco");
 243   THnSparseF* hPairMatch = (THnSparseF*)fOutput->FindObject("hPairMatch");
 244   TH3F* hKcorr = (TH3F*)fOutput->FindObject("hKcorr");
 245
 246   TObjArray* kaonsPosMc = new TObjArray();
 247   TObjArray* kaonsNegMc = new TObjArray();
 248   TObjArray* kaonsPosData = new TObjArray();
 249   TObjArray* kaonsNegData = new TObjArray();
 250   TObjArray* kaonsPosGen = new TObjArray();
 251   TObjArray* kaonsNegGen = new TObjArray();
 252
 253   Int_t nMc = 0; // number of charged MC particles which satisfy cuts (except PID)
 254   Int_t nReco = 0; // number of reco tracks which satisfy cuts (except PID)
 255
 256   //MC Loop
 257   TClonesArray *arrayMC = 0;
 258   if (fIsMC)
 259     {
 260       arrayMC = (TClonesArray*) fAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName());
 261       if (!arrayMC) {
 262         AliFatal("Error: MC particles branch not found!\n");
 263       }
 264
 265
 266       Int_t nMC = arrayMC->GetEntries();
 267       for (Int_t iMC = 0; iMC < nMC; iMC++)
 268         {
 269           AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(iMC);
 270
 271           if(partMC->Pt()<0.15) continue;
 272           if(TMath::Abs(partMC->Eta())>0.8) continue;
 273
 274           // PDG codes: pion(211), kaon(+/-321), proton(2212), phi(333)
 275
 276           // make pt spectrum of only MC phis that decay to k+k-
 277           if(partMC->GetPdgCode()==333)
 278             {
 279               if(partMC->GetNDaughters()==2)
 280                 {
 281                   if(TMath::Abs(((AliAODMCParticle*) arrayMC->At(partMC->GetDaughter(0)))->GetPdgCode()) == 321 && TMath::Abs(((AliAODMCParticle*) arrayMC->At(partMC->GetDaughter(1)))->GetPdgCode()) == 321)
 282                     {
 283                       AliAODMCParticle *d1 = (AliAODMCParticle*) arrayMC->At(partMC->GetDaughter(0));
 284                       AliAODMCParticle *d2 = (AliAODMCParticle*) arrayMC->At(partMC->GetDaughter(1));
 285                       if(d1->Charge() > 0) hKcorr->Fill(partMC->Pt(),d1->Pt(),d2->Pt());
 286                       else hKcorr->Fill(partMC->Pt(),d2->Pt(),d1->Pt());
 287                       TLorentzVector *d3 = (TLorentzVector*)makePhi(d1,d2);
 288                       // InvMass, pt, y, eta, phi, pair ID
 289                       Double_t invMass = (d3->M2() > 0 ? sqrt(d3->M2()) : 0);
 290                       if(invMass < 1.11)
 291                         {
 292                           Double_t varfill1[7] = {invMass, d3->Pt(), d3->Rapidity(), cent, d3->Eta(), (d3->Phi() > 0 ? d3->Phi() : d3->Phi()+2*TMath::Pi()), 0};
 293                           hPairMcPhi->Fill(varfill1);
 294                           if(d1->Pt() > 0.15 && d2->Pt() > 0.15 && TMath::Abs(d1->Eta()) < 0.8 && TMath::Abs(d2->Eta()) < 0.8)
 295                             hPairMcPhiCuts->Fill(varfill1);
 296                         }
 297                       delete d3;
 298                     }
 299                 }
 300             }
 301
 302           if(partMC->Charge()==0) continue; // remove neutrals
 303           if(!partMC->IsPhysicalPrimary()) continue;  // need to remove all non-final state particles
 304
 305           nMc++;
 306
 307           Int_t mcID = fHelperPID->GetParticleSpecies(partMC);
 308           if(mcID>3 || mcID < -3) continue;
 309           // PID ID, pt, y, eta, phi
 310           Double_t varfill2[6] = {(partMC->Charge() > 0 ? mcID+1 : -1*(mcID+1)), partMC->Pt(), partMC->Y(), cent, partMC->Eta(), partMC->Phi()};
 311           hTrackMc->Fill(varfill2);
 312
 313           if(mcID == 1)
 314             {
 315               if(partMC->Charge() > 0) kaonsPosMc->Add(partMC);
 316               else if(partMC->Charge() < 0) kaonsNegMc->Add(partMC);
 317             }
 318
 319         } // end MC track loop
 320
 321       UnlikeSign(kaonsPosMc,kaonsNegMc,hPairMc,cent);
 322       LikeSign(kaonsPosMc,kaonsNegMc,hPairMc,cent);
 323     }
 324
 325
 326   //track loop
 327   for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++) {
 328     AliAODTrack* track = fAOD->GetTrack(iTracks);
 329     if (!fTrackCuts->IsSelected(track,kTRUE)) continue; //track selection (rapidity selection NOT in the standard cuts?)
 330     if(track->Charge()==0) continue;
 331     if(track->Pt()<0.15) continue;
 332     if(TMath::Abs(track->Eta())>0.8) continue;
 333
 334     nReco++;
 335
 336     Int_t dataID=fHelperPID->GetParticleSpecies(track,kTRUE);
 337     if(dataID>3 || dataID < -3) continue;
 338
 339     // PID ID, pt, y, eta, phi
 340     Double_t varfill3[6] = {(track->Charge() > 0 ? dataID+1 : -1*(dataID+1)), track->Pt(), track->Y(), cent, track->Eta(), track->Phi()};
 341     hTrackReco->Fill(varfill3);
 342
 343     if(dataID==1)
 344       {
 345         if(track->Charge() > 0) kaonsPosData->Add(track);
 346         else if(track->Charge() < 0) kaonsNegData->Add(track);
 347       }
 348
 349     if (fIsMC)
 350       {
 351         Int_t mcLabel = track->GetLabel();
 352         AliAODMCParticle* tempMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(mcLabel));
 353         if(!tempMC)
 354           {
 355             AliError("Cannot get MC particle");
 356             continue;
 357           }
 358
 359         Int_t genID = fHelperPID->GetParticleSpecies(tempMC);
 360         if(genID>3 || genID < -3) continue;
 361
 362         // PID ID, pt, y, eta, phi
 363         Double_t varfill4[6] = {(tempMC->Charge() > 0 ? genID+1 : -1*(genID+1)), tempMC->Pt(), tempMC->Y(), cent, tempMC->Eta(), tempMC->Phi()};
 364         hTrackMatch->Fill(varfill4);
 365
 366         if(genID==1)
 367           {
 368
 369             if(tempMC->GetMother() >= 0)
 370               {
 371                 if(((AliAODMCParticle*)arrayMC->At(tempMC->GetMother()))->GetPdgCode() == 333)
 372                   {
 373                     if(tempMC->Charge() > 0)
 374                       {
 375                         for(Int_t k = 0; k < kaonsNegGen->GetEntries(); k++)
 376                           {
 377                             if(tempMC->GetMother() != ((AliAODMCParticle*)arrayMC->At(((AliVParticle*)kaonsNegGen->UncheckedAt(k))->GetLabel()))->GetMother()) continue;
 378                             TLorentzVector*c = (TLorentzVector*)makePhi(track,(AliVParticle*)kaonsNegGen->UncheckedAt(k));
 379                             Double_t invMass = (c->M2() > 0 ? sqrt(c->M2()) : 0);
 380                             if(invMass < 1.11)
 381                               {
 382                                 Double_t fillgen[7] = {invMass, c->Pt(), c->Rapidity(), cent, c->Eta(), (c->Phi() > 0 ? c->Phi() : c->Phi()+2*TMath::Pi()), 0};
 383                                 hPairMatch->Fill(fillgen);
 384                               }
 385                             delete c;
 386                           }
 387                       }
 388                     else if(tempMC->Charge() < 0)
 389                       {
 390                         for(Int_t k = 0; k < kaonsPosGen->GetEntries(); k++)
 391                           {
 392                             if(tempMC->GetMother() != ((AliAODMCParticle*)arrayMC->At(((AliVParticle*)kaonsPosGen->UncheckedAt(k))->GetLabel()))->GetMother()) continue;
 393                             TLorentzVector*c = (TLorentzVector*)makePhi(track,(AliVParticle*)kaonsPosGen->UncheckedAt(k));
 394                             Double_t invMass = (c->M2() > 0 ? sqrt(c->M2()) : 0);
 395                             if(invMass < 1.11)
 396                               {
 397                                 Double_t fillgen2[7] = {invMass, c->Pt(), c->Rapidity(), cent, c->Eta(), (c->Phi() > 0 ? c->Phi() : c->Phi()+2*TMath::Pi()), 0};
 398                                 hPairMatch->Fill(fillgen2);
 399                               }
 400                             delete c;
 401                           }
 402                       }
 403                   }
 404               }
 405
 406             if(track->Charge() > 0) kaonsPosGen->Add(track);
 407             else if(track->Charge() < 0) kaonsNegGen->Add(track);
 408           }
 409       }
 410
 411   } // end loop on tracks
 412
 413   UnlikeSign(kaonsPosData,kaonsNegData,hPairReco,cent);
 414   LikeSign(kaonsPosData,kaonsNegData,hPairReco,cent);
 415
 416   Double_t varfill5[4] = {cent, fAOD->GetPrimaryVertex()->GetZ(), nMc, nReco};
 417   hEvent->Fill(varfill5);
 418
 419   kaonsPosMc->Clear();
 420   kaonsNegMc->Clear();
 421   kaonsPosData->Clear();
 422   kaonsNegData->Clear();
 423   kaonsPosGen->Clear();
 424   kaonsNegGen->Clear();
 425
 426   if(kaonsPosMc) delete kaonsPosMc;
 427   if(kaonsNegMc) delete kaonsNegMc;
 428   if(kaonsPosData) delete kaonsPosData;
 429   if(kaonsNegData) delete kaonsNegData;
 430   if(kaonsPosGen) delete kaonsPosGen;
 431   if(kaonsNegGen) delete kaonsNegGen;
 432
 433   PostData(1,fOutput);
 434   PostData(2, fHelperPID);
 435   PostData(3, fEventCuts);
 436   PostData(4, fTrackCuts);
 437   //Printf("............. end of Exec");
 438
 439 }
 440
 441 //_________________________________________________________________
 442 void   AliAnalysisTaskPhiEffMc::Terminate(Option_t *)
 443 {
 444   // Terminate analysis
 445   //
 446   fOutput = dynamic_cast<TList*>(GetOutputData(1));
 447   if (!fOutput) {
 448     printf("ERROR: fOutput not available\n");
 449     return;
 450   }
 451
 452     printf("AliAnalysisTaskPhiEffMc: Terminate() \n");
 453
 454 }
 455
 456 //_________________________________________________________________
 457 void AliAnalysisTaskPhiEffMc::UnlikeSign(TObjArray* kaonsPos, TObjArray* kaonsNeg, THnSparseF* h, Double_t cent)
 458 {
 459   Int_t countPos = kaonsPos->GetEntriesFast();
 460   Int_t countNeg = kaonsNeg->GetEntriesFast();
 461
 462   if(countPos+countNeg < 2) return;
 463
 464   for(Int_t cp = 0; cp < countPos; cp++) // form k+k- pairs and compute invariant mass
 465     {
 466       AliVParticle* temp1 = (AliVParticle*)kaonsPos->UncheckedAt(cp);
 467       for(Int_t cn = 0; cn < countNeg; cn++)
 468         {
 469           AliVParticle* temp2 = (AliVParticle*)kaonsNeg->UncheckedAt(cn);
 470           TLorentzVector*c = (TLorentzVector*)makePhi(temp1,temp2);
 471           // InvMass, pt, y, eta, phi, pair ID
 472           Double_t invMass = (c->M2() > 0 ? sqrt(c->M2()) : 0);
 473           if(invMass < 1.11)
 474             {
 475               Double_t varfill[7] = {invMass, c->Pt(), c->Rapidity(), cent, c->Eta(), (c->Phi() > 0 ? c->Phi() : c->Phi()+2*TMath::Pi()), 0};
 476               h->Fill(varfill);
 477             }
 478           delete c;
 479         }
 480     }
 481 }
 482
 483 void AliAnalysisTaskPhiEffMc::LikeSign(TObjArray* kaonsPos, TObjArray* kaonsNeg, THnSparseF* h, Double_t cent)
 484 {
 485   Int_t countPos = kaonsPos->GetEntriesFast();
 486   Int_t countNeg = kaonsNeg->GetEntriesFast();
 487
 488   if(countPos < 2 && countNeg < 2) return;
 489
 490   for(Int_t cp = 0; cp < countPos; cp++) // form k+k+ pairs and compute invariant mass
 491     {
 492       AliVParticle* temp1 = (AliVParticle*)kaonsPos->UncheckedAt(cp);
 493       for(Int_t cn = cp+1; cn < countPos; cn++)
 494         {
 495           AliVParticle* temp2 = (AliVParticle*)kaonsPos->UncheckedAt(cn);
 496           TLorentzVector*c = (TLorentzVector*)makePhi(temp1,temp2);
 497           // InvMass, pt, y, eta, phi, pair ID
 498           Double_t invMass = (c->M2() > 0 ? sqrt(c->M2()) : 0);
 499           if(invMass < 1.11)
 500             {
 501               //cout << "y = " << 0.5*log((c->E()+c->Pz())/(c->E()-c->Pz())) << "   " << c->Rapidity() << endl;
 502               //cout << "eta = " << -1.*log(tan(c->Theta()/2.)) << "   " << c->Eta() << endl;
 503               Double_t varfill1[7] = {invMass, c->Pt(), c->Rapidity(), cent, c->Eta(), (c->Phi() > 0 ? c->Phi() : c->Phi()+2*TMath::Pi()), 1};
 504               h->Fill(varfill1);
 505             }
 506           delete c;
 507         }
 508     }
 509   for(Int_t cp = 0; cp < countNeg; cp++) // form k-k- pairs and compute invariant mass
 510     {
 511       AliVParticle* temp1 = (AliVParticle*)kaonsNeg->UncheckedAt(cp);
 512       for(Int_t cn = cp+1; cn < countNeg; cn++)
 513         {
 514           AliVParticle* temp2 = (AliVParticle*)kaonsNeg->UncheckedAt(cn);
 515           TLorentzVector*c = (TLorentzVector*)makePhi(temp1,temp2);
 516           Double_t invMass = (c->M2() > 0 ? sqrt(c->M2()) : 0);
 517           if(invMass < 1.11)
 518             {
 519               Double_t varfill2[7] = {invMass, c->Pt(), c->Rapidity(), cent, c->Eta(), (c->Phi() > 0 ? c->Phi() : c->Phi()+2*TMath::Pi()), -1};
 520               h->Fill(varfill2);
 521             }
 522           delete c;
 523         }
 524     }
 525 }
 526
 527 TLorentzVector* AliAnalysisTaskPhiEffMc::makePhi(AliVParticle* p1, AliVParticle* p2)
 528 {
 529   TLorentzVector* a = new TLorentzVector(p1->Px(),p1->Py(),p1->Pz(),sqrt(pow(p1->P(),2)+pow(4.93676999999999977e-01, 2)));
 530   TLorentzVector* b = new TLorentzVector(p2->Px(),p2->Py(),p2->Pz(),sqrt(pow(p2->P(),2)+pow(4.93676999999999977e-01, 2)));
 531   TLorentzVector* c = new TLorentzVector((*a)+(*b));
 532   delete a;
 533   delete b;
 534   return c;
 535 }
 536