+++ /dev/null
-void AliD0toKpiPlots(const Char_t *inName="AliD0toKpi.root",
- const Char_t *outName="D0histograms.root") {
- //--------------------------------------------------------------------------
- // This macro histograms many variables of D0->Kpi candidates
- //
- // Andrea Dainese, andrea.dainese@lnl.infn.it
- //--------------------------------------------------------------------------
-
- gSystem->Load("libANALYSIS.so");
-
- // set of cuts
- Double_t D0Cuts[9] = {0.1, // mass [GeV]
- 1000000., // dca [micron]
- 1.1, // cosThetaStar
- 0., // pT K [GeV/c]
- 0., // pT Pi [GeV/c]
- 100000., // d0K upper [micron]
- 100000., // d0Pi upper [micron]
- 10000000000., // d0d0 [micron^2]
- -1.1}; // cosThetaPointing
-
- // number of events (for normalization)
- Bool_t normalize = kFALSE;
- Double_t events = 1.;
-
-
-
- // define histograms
- TH1F *hptK = new TH1F("hptK","\"K\" p_{t} distribution",50,0,10);
- hptK->SetXTitle("p_{t} [GeV]");
-
- TH1F *hptPi = new TH1F("hptPi","\"#pi\" p_{t} distribution",50,0,10);
- hptPi->SetXTitle("p_{t} [GeV]");
-
- TH1F *hDCA = new TH1F("hDCA","DCA",50,0,1000);
- hDCA->SetXTitle("dca [#mu m]");
-
- TH1F *hptD0 = new TH1F("hptD0","D^{0} p_{t} distribution",40,0,40);
- hptD0->SetXTitle("p_{t} [GeV]");
-
- TH1F *hyD0 = new TH1F("hyD0","D^{0} rapidity distribution",50,-2,2);
- hyD0->SetXTitle("y");
-
- TH1F *hCPtaD0 = new TH1F("hCPtaD0","cosine of pointing angle distribution",100,-1,1);
- hCPtaD0->SetXTitle("cos #theta_{point}");
-
- TH1F *hCPtaXY = new TH1F("hCPtaXY","cosine of pointing angle in (x,y) plane",100,-1,1);
- hCPtaXY->SetXTitle("cos #theta_{point}");
-
- TH1F *hCts = new TH1F("hCts","cosine of decay angle",50,-1.2,1.2);
- hCts->SetXTitle("cos #theta^{*}");
-
- TH2F *hCtsVsPtK = new TH2F("hCtsVsPtK","cosine of decay angle VS \"K\" p_{t}",50,0,5,50,-1,1);
- hCtsVsPtK->SetYTitle("cos #theta^{*}");
- hCtsVsPtK->SetXTitle("p_{t} [GeV]");
-
- TH1F *hd0d0 = new TH1F("hd0d0","Product of the impact parameters",100,-100000,100000);
- hd0d0->SetXTitle("d_{0}^{K} #times d_{0}^{#pi} [#mu m^{2}]");
-
- TH1F *hd0K = new TH1F("hd0K","Impact parameter of \"K\"",100,-5000,5000);
- hd0K->SetXTitle("d_{0}^{K} [#mu m]");
-
- TH1F *hd0Pi = new TH1F("hd0Pi","Impact parameter of \"#pi\"",100,-5000,5000);
- hd0Pi->SetXTitle("d_{0}^{#pi} [#mu m]");
-
- TH2F *hCPtaVsd0d0 = new TH2F("hCPtaVsd0d0","cos #theta_{point} vs d_{0}^{K} #times d_{0}^{#pi}",100,-100000,100000,100,-1,1);
- hCPtaVsd0d0->SetXTitle("d_{0}^{K} #times d_{0}^{#pi} [#mu m^{2}]");
- hCPtaVsd0d0->SetYTitle("cos #theta_{point}");
-
- TH2F *hCPtaVsd0d0zoom = new TH2F("hCPtaVsd0d0zoom","cos #theta_{point} vs d_{0}^{K} #times d_{0}^{#pi}",100,-100000,0,100,.9,1);
- hCPtaVsd0d0zoom->SetXTitle("d_{0}^{K} #times d_{0}^{#pi} [#mu m^{2}]");
- hCPtaVsd0d0zoom->SetYTitle("cos #theta_{point}");
-
- TH2F *hd0d0VSptD0 = new TH2F("hd0d0VSptD0","d_{0}^{K} #times d_{0}^{#pi} VS D^{0} p_{t}",50,0,25,100,-120000,120000);
- hd0d0VSptD0->SetYTitle("d_{0}^{K} #times d_{0}^{#pi} [#mu m^{2}]");
- hd0d0VSptD0->SetXTitle("D^{0} p_{t} [GeV]");
-
- TH1F *hMass = new TH1F("hMass","Invariant mass distribution",50,1.765,1.965);
- hMass->SetXTitle("M[K,#pi] [GeV]");
-
- TH2F *hArm = new TH2F("hArm","Armenteros plot",50,-2,2,50,0,1);
- hArm->SetXTitle("#alpha");
- hArm->SetYTitle("q_{t}");
-
- // open input file and get tree
- TFile *inFile = TFile::Open(inName);
-
- TTree *treeD0 = (TTree*)inFile->Get("TreeD0");
- AliD0toKpi *D = 0;
- treeD0->SetBranchAddress("D0toKpi",&D);
- Int_t entries = (Int_t)treeD0->GetEntries();
-
- printf("+++\n+++ Number of D0 in tree: %d\n+++\n",entries);
-
- Double_t MD0,MD0bar,ctsD0,ctsD0bar,ctsPiD0,ctsPiD0bar;
- Double_t WgtD0,WgtD0bar;
- Double_t sampleABC=0.;
- Int_t okD0=0,okD0bar=0;
- Int_t nSel = 0;
- Int_t ptbin;
-
- // loop on D0
- for(Int_t i=0; i<entries; i++) {
- if(i%10000==0) printf(" candidate %d of %d\n",i,entries);
-
- // get event from tree
- treeD0->GetEvent(i);
- //--- select the PID strategy & compute weights
- // D->ApplyPID("TOFparam_PbPb");
- // D->ComputeWgts();
- // get weights for the three samples A+B+C
- // D->GetWgts(WgtD0,WgtD0bar,"ABC");
- WgtD0 = 1.; WgtD0bar = 1.;
-
- // normalize to 1 event
- if(normalize) { WgtD0 /= events; WgtD0bar /= events; }
-
- // check if candidate passes selection (as D0 or D0bar)
- D->Select(D0Cuts,okD0,okD0bar);
-
- // set weights to 0 if the candidate doesn't pass selection
- if(!okD0) WgtD0=0.;
- if(!okD0bar) WgtD0bar=0.;
- if(okD0 || okD0bar) nSel++;
-
- // count selected candidates
- sampleABC += WgtD0 + WgtD0bar;
-
- // inv mass and cosThetaStar
- D->InvMass(MD0,MD0bar);
- D->CosThetaStar(ctsD0,ctsD0bar);
-
- // fill histograms
- hptK->Fill(D->PtChild(1),WgtD0);
- hptK->Fill(D->PtChild(0),WgtD0bar);
- hptPi->Fill(D->PtChild(0),WgtD0);
- hptPi->Fill(D->PtChild(1),WgtD0bar);
- hd0K->Fill(D->Getd0Child(1),WgtD0);
- hd0K->Fill(D->Getd0Child(0),WgtD0bar);
- hd0Pi->Fill(D->Getd0Child(0),WgtD0);
- hd0Pi->Fill(D->Getd0Child(1),WgtD0bar);
- hMass->Fill(MD0,WgtD0);
- hMass->Fill(MD0bar,WgtD0bar);
- hCts->Fill(ctsD0,WgtD0);
- hCts->Fill(ctsD0bar,WgtD0bar);
- hCtsVsPtK->Fill(D->PtChild(1),ctsD0,WgtD0);
- hCtsVsPtK->Fill(D->PtChild(0),ctsD0bar,WgtD0bar);
- hDCA->Fill(D->GetDCA(),WgtD0+WgtD0bar);
- hptD0->Fill(D->Pt(),WgtD0+WgtD0bar);
- hyD0->Fill(D->Rapidity(),WgtD0+WgtD0bar);
- hd0d0->Fill(D->ProdImpParams(),WgtD0+WgtD0bar);
- hCPtaD0->Fill(D->CosPointing(),WgtD0+WgtD0bar);
- hCPtaXY->Fill(D->CosPointingXY(),WgtD0+WgtD0bar);
- hCPtaVsd0d0->Fill(D->ProdImpParams(),D->CosPointing(),WgtD0+WgtD0bar);
- hd0d0VSptD0->Fill(D->Pt(),D->ProdImpParams(),WgtD0+WgtD0bar);
- hCPtaVsd0d0zoom->Fill(D->ProdImpParams(),D->CosPointing(),WgtD0+WgtD0bar);
- hArm->Fill(D->Alpha(),D->Qt(),WgtD0+WgtD0bar);
-
-
- } // end loop on D0 candidates
-
- inFile->Close();
-
- printf("\n\n --- Total number of candidates passing selection: %d\n\n --- Sum of weights sample A+B+C: %f\n\n",nSel,sampleABC);
-
- // draw histograms
- TCanvas *c1 = new TCanvas("c1","pt K & pi",0,0,700,700);
- c1->SetLogy();
- hptK->Draw();
- hptPi->Draw("same");
-
- TCanvas *c2 = new TCanvas("c2","pt D0",0,0,700,700);
- c2->SetLogy();
- hptD0->Draw();
-
- TCanvas *c3 = new TCanvas("c3","rapidity D0",0,0,700,700);
- hyD0->Draw();
-
- TCanvas *c4 = new TCanvas("c4","pointing angle",0,0,700,700);
- hCPtaD0->Draw();
-
- TCanvas *c5 = new TCanvas("c5","d0 x d0",0,0,700,700);
- c5->SetLogy();
- hd0d0->Draw();
-
- TCanvas *c6 = new TCanvas("c6","pointing angle VS d0d0",0,0,700,700);
- c6->SetLogz();
- hCPtaVsd0d0->Draw("box");
-
- TCanvas *c7 = new TCanvas("c7","mass",0,0,700,700);
- hMass->Draw();
-
- TCanvas *c8 = new TCanvas("c8","armenteros",0,0,700,700);
- hArm->Draw("box");
-
- TCanvas *c9 = new TCanvas("c9","decay angle",0,0,700,700);
- hCts->Draw();
-
- TCanvas *c10 = new TCanvas("c10","dca",0,0,700,700);
- c10->SetLogy();
- hDCA->Draw();
-
- TCanvas *c11 = new TCanvas("c11","d0 K & pi",0,0,700,700);
- c11->SetLogy();
- hd0K->Draw();
- hd0Pi->Draw("same");
-
- // write all histograms to file
- TFile *outFile = new TFile(outName,"recreate");
- hMass->Write();
- hDCA->Write();
- hCts->Write();
- hCtsVsPtK->Write();
- hArm->Write();
- hCPtaVsd0d0->Write();
- hd0d0VSptD0->Write();
- hCPtaVsd0d0zoom->Write();
- hd0d0->Write();
- hCPtaD0->Write();
- hCPtaXY->Write();
- hptK->Write();
- hptPi->Write();
- hptD0->Write();
- hyD0->Write();
- hd0K->Write();
- hd0Pi->Write();
- outFile->Close();
-
- return;
-}
-
-
-
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff