MakeRealistic.C

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void
MakeRealistic()
{
  gSystem->AddIncludePath("-I${ALICE_ROOT}/include -I${ALICE_PHYSICS}/include");
  gROOT->LoadMacro("AliAODTracklet.C+g");
  gROOT->LoadMacro("AliTrackletWeights.C+g");

  AliTrackletPtPidStrWeights* weights = new AliTrackletPtPidStrWeights("weights");

  // --- pT weight ---------------------------------------------------
  // Unity in all centralities and pT 
  // TH2D* cPt = new TH2D("cPt", "cPt", 1, 0, 100, 1, 0, 5);
  // cPt->SetBinContent(1,1,1);
  // weights->SetPtWeight(cPt);

  // --- Abundance weights -------------------------------------------
  // We do not add any!

  // --- Strangeness weights -----------------------------------------
  // We add simple constant weights
  Short_t pids[] = { 321, // K^+/-
         310, // K^0_S
         3122, // Lambda
         3212, // Sigma0
         3322, // Xi0,
         0 };
  Double_t factors[] = { 3,
       1.5,
       1.5,
       1.5,
       3,
       0 };
  Short_t*  pid = pids;
  Double_t* fac = factors;
  while (*pid) {
    Short_t  p = *pid;
    Double_t f = *fac;
    TH1D*   h = new TH1D(Form("w%d", p), Form("PID %d weight", p), 1, 0, 100);
    h->SetBinContent(1,f);
    weights->AddStrangenessWeight(p, h);
    pid++;
    fac++;
  }

  new TBrowser;
  
  // --- Write to file -----------------------------------------------
  TFile* outW = TFile::Open("realistic.root", "RECREATE");  
  weights->Write();
  outW->Write();
  weights->Draw();
  weights->Print();
}
/* @} */
//
// EOF
//