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#ifndef EvtComparison_h
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#define EvtComparison_h
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#include <TROOT.h>
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#include <TH1F.h>
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#include <TCanvas.h>
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#include <TLegend.h>
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#include <THStack.h>
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#include <TColor.h>
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#include <TLorentzVector.h>
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#include <vector>
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#include <string>
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#include <sstream>
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#include <math.h>
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#include "histoAlgo.h"
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class TreeProducer;
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class TwoBodyDecaySpy;
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struct histoEvt
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{
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TH1D* diffPT;
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TH1D* diffP;
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TH1D* diffPX;
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TH1D* diffPY;
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TH1D* diffPZ;
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TH1D* diffE;
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TH1D* diffEta;
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TH1D* diffPhi;
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TH1D* diffMz;
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std::string theName;
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histoEvt(std::string name)
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{
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std::string title=name+" : PT";
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diffPT = new TH1D(title.c_str(),title.c_str(),100,-1.,+1.);
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title=name+" : P";
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diffP = new TH1D(title.c_str(),title.c_str(),100,-4,+4);
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title=name+" : PX";
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diffPX = new TH1D(title.c_str(),title.c_str(),100,-1,+1);
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title=name+" : PY";
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diffPY = new TH1D(title.c_str(),title.c_str(),100,-1,+1);
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title=name+" : PZ";
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diffPZ = new TH1D(title.c_str(),title.c_str(),100,-4,+4);
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title=name+" : E";
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diffE = new TH1D(title.c_str(),title.c_str(),100,-4,+4);
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title=name+" : Eta";
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diffEta = new TH1D(title.c_str(),title.c_str(),100,-0.001,+0.001);
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title=name+" : Phi";
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diffPhi = new TH1D(title.c_str(),title.c_str(),100,-0.001,+0.001);
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title=name+" : MZ";
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diffMz = new TH1D(title.c_str(),title.c_str(),100,-2,+2);
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// Some change to be sure that the string could be a filename
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for (unsigned int i=0;i<name.size();i++)
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{
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if (name[i]=='^') name[i]='_';
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else if (name[i]=='{') name[i]='_';
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else if (name[i]=='}') name[i]='_';
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else if (name[i]=='(') name[i]='_';
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else if (name[i]==')') name[i]='_';
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else if (name[i]==' ') name[i]='_';
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else if (name[i]=='*') name[i]='_';
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else if (name[i]=='/') name[i]='_';
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else if (name[i]=='\\') name[i]='_';
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else if (name[i]=='#') name[i]='_';
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else if (name[i]=='+') name[i]='p';
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else if (name[i]=='-') name[i]='m';
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}
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theName=name;
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}
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void Draw()
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{
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TCanvas* theCanvas = new TCanvas("comparison_canvas","comparison_canvas");
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diffPT->SetLineColor(2);
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diffPT->GetXaxis()->SetTitle("pT difference (GeV)");
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diffPT->GetYaxis()->SetTitle("# events");
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diffPT->Draw();
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theCanvas->SaveAs((theName+"_diffPT.root").c_str());
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diffP->SetLineColor(2);
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diffP->GetXaxis()->SetTitle("p difference (GeV)");
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diffP->GetYaxis()->SetTitle("# events");
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diffP->Draw();
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theCanvas->SaveAs((theName+"_diffP.root").c_str());
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diffPX->SetLineColor(2);
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diffPX->GetXaxis()->SetTitle("pX difference (GeV)");
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diffPX->GetYaxis()->SetTitle("# events");
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diffPX->Draw();
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theCanvas->SaveAs((theName+"_diffPX.root").c_str());
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diffPY->SetLineColor(2);
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diffPY->GetXaxis()->SetTitle("pY difference (GeV)");
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diffPY->GetYaxis()->SetTitle("# events");
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diffPY->Draw();
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theCanvas->SaveAs((theName+"_diffPY.root").c_str());
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diffPZ->SetLineColor(2);
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diffPZ->GetXaxis()->SetTitle("pZ difference (GeV)");
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diffPZ->GetYaxis()->SetTitle("# events");
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diffPZ->Draw();
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theCanvas->SaveAs((theName+"_diffPZ.root").c_str());
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diffE->SetLineColor(2);
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diffE->GetXaxis()->SetTitle("E difference");
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diffE->GetYaxis()->SetTitle("# events");
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diffE->Draw();
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theCanvas->SaveAs((theName+"_diffE.root").c_str());
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diffEta->SetLineColor(2);
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diffEta->GetXaxis()->SetTitle("pseudo-rapidity difference");
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diffEta->GetYaxis()->SetTitle("# events");
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diffEta->Draw();
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theCanvas->SaveAs((theName+"_diffEta.root").c_str());
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diffPhi->SetLineColor(2);
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diffPhi->GetXaxis()->SetTitle("azimutal angle difference (rad)");
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diffPhi->GetYaxis()->SetTitle("# events");
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diffPhi->Draw();
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theCanvas->SaveAs((theName+"_diffPhi.root").c_str());
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diffMz->SetLineColor(2);
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diffMz->GetXaxis()->SetTitle("invariant mass difference (GeV)");
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diffMz->GetYaxis()->SetTitle("# events");
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diffMz->Draw();
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theCanvas->SaveAs((theName+"_diffMz.root").c_str());
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}
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// function that will be use for the matching between trcks from different trees
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double cos(double a1, double b1, double c1, double a2, double b2, double c2)
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{
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double n1 = sqrt(a1*a1+b1*b1+c1*c1);
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double n2 = sqrt(a2*a2+b2*b2+c2*c2);
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double product = a1*a2+b1*b2+c1*c2;
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return product/(n1*n2);
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}
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};
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class EvtComparison
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{
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public:
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EvtComparison() {}
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~EvtComparison() {}
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void Compare(TwoBodyDecaySpy* a, TreeProducer* b, histoEvt& histos);
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void Compare(TreeProducer* a, TreeProducer* b, histoEvt& histos);
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void Compare(TwoBodyDecaySpy* a, TwoBodyDecaySpy* b, histoEvt& histos);
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private:
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void Compare(const std::vector<TLorentzVector>& spy,
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const std::vector<TLorentzVector>& tree,
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histoEvt& histos);
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};
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#endif
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