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#include <iostream>
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#include <utility>
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#include "TH1F.h"
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#include "TObjArray.h"
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#include "TFractionFitter.h"
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#include "TFile.h"
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#include "TTree.h"
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#include "TChain.h"
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#include "TRandom3.h"
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#include "TCanvas.h"
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#include "TSlider.h"
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#include "TF1.h"
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//#include "../macros/tmvaglob.C"
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//gROOT->SetStyle("Plain");
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//gStyle->SetOptStat(0);
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using namespace std;
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class toyMC
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{
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public:
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toyMC();
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toyMC(int nbins);
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~toyMC();
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void load_templates();
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void load_syst_templates();
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void load_ejets_templates();
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double print_chisq(TH1 * h1, TH1 * h2);
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//
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//_____ Fix bkg2 fraction to qcd_frac _________________________________
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// Do not fix if qcd_frac is negative
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//
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int do_fit(TH1F * _data, double qcd_frac=-1.0);
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int generate_toy(int n_sig, int n_phys, int n_qcd);
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int generate_toy_from_syst(int n_sig, int n_phys, int n_qcd);
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void set_overflow_bins(TH1F * h);
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void debug_hist(TH1F * h);
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int fit_data(void);
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int fit_data_stacked(void);
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void set_frame_style(TH1 * frame, TVirtualPad * pad, Float_t scale = 1.0);
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// returns pair<mean,width>
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std::pair<double,double> do_toys(double n_sig, double n_bkg1, double n_bkg2, int n_exp=100);
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TH1F * data;
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TH1F * ttbar;
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TH1F * wzjets;
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TH1F * qcd;
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// templates for systematics
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TH1F * ttbar_s;
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TH1F * wzjets_s;
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TH1F * qcd_s;
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int n_bins;
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TObjArray * mc;
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TFractionFitter * fit;
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//
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//_____ ensemble data __________________________________________________
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//
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int n_gen_sig,n_gen_bkg1,n_gen_bkg2;
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TH1F * toy_data;
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std::vector<double> v_mean;
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std::vector<double> v_error;
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std::vector<double> v_pull;
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private:
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TRandom3 _random;
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Float_t labelSize;
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};
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toyMC::toyMC(){
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data = 0;
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ttbar = 0;
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wzjets = 0;
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qcd = 0;
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ttbar_s = 0;
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wzjets_s = 0;
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qcd_s = 0;
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mc = 0;
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fit = 0;
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toy_data = 0;
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n_bins = 50;
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labelSize = 0.09;
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}
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toyMC::toyMC(int nbins){
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data = 0;
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ttbar = 0;
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wzjets = 0;
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qcd = 0;
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ttbar_s = 0;
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wzjets_s = 0;
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qcd_s = 0;
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mc = 0;
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fit = 0;
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toy_data = 0;
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n_bins = nbins;
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labelSize = 0.09;
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}
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toyMC::~toyMC(){
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delete data;
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delete ttbar;
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delete wzjets;
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delete qcd;
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delete mc;
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delete fit;
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delete toy_data;
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}
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void toyMC::load_templates(){
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TFile * data_file = new TFile("./TMVApp-data-20pb-03jul2009.root","READ");
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//TFile * data_file = new TFile("./TMVApp-data-16may2009.root","READ");
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//TFile * data_file = new TFile("./TMVApp-data-31may2009.root","READ");
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TTree * t_data = (TTree *)data_file->Get("classifier");
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//
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//_____ Phys template w and tW fixed
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//
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TFile * phys_template_file = new TFile("TMVApp-phys-30may2009.root");
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TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
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//
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//_____ nominal templates
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//
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TFile * ttbar_phys_template_file = new TFile("./TMVA.root","READ");
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TFile * qcd_template_file = new TFile("./TMVApp-qcd-16may2009.root","READ");
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//
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TTree * t_ttbar = (TTree *)ttbar_phys_template_file->Get("TestTree");
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//TTree * t_phys = (TTree *)ttbar_phys_template_file->Get("TestTree");
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TTree * t_qcd = (TTree *)qcd_template_file->Get("classifier");
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//
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//_____ ISR/FSR
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//
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-pedros-nominalISRFSR.root");
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//TTree * t_ttbar = (TTree *)ttbar_template_file->Get("classifier");
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//
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//_____ systematics templates
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//
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/***********************
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes-up-22may2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes-up-22may2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes-up-22may2009.root");
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//
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes-down-22may2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes-down-22may2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes-down-22may2009.root");
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//
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//TTree * t_ttbar = (TTree *)ttbar_template_file->Get("classifier");
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//TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
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//TTree * t_qcd = (TTree *)qcd_template_file->Get("classifier");
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************************/
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delete data;
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delete ttbar;
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delete wzjets;
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delete qcd;
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delete data;
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delete ttbar;
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delete wzjets;
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delete qcd;
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data = new TH1F("data" ,"data" ,n_bins, -0.8, 0.8);
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ttbar = new TH1F("ttbar" ,"ttbar" ,n_bins, -0.8, 0.8);
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wzjets = new TH1F("wzjets","wzjets",n_bins, -0.8, 0.8);
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qcd = new TH1F("qcd" ,"qcd" ,n_bins, -0.8, 0.8);
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//
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data->SetMarkerStyle(21);
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data->SetMarkerSize(0.7);
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//data->SetFillStyle(4050);
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ttbar->SetFillColor(42);
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//ttbar->SetFillStyle(4050);
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wzjets->SetFillColor(46);
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//wzjets->SetFillStyle(4050);
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qcd->SetFillColor(48);
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//TSlider *slider = 0;
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//
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t_data -> Draw("MVA_BDT>>data","","goff");
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t_ttbar -> Draw("MVA_BDT>>ttbar","type==1","goff");
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//t_ttbar -> Draw("MVA_BDT>>ttbar","","goff");
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//t_phys -> Draw("MVA_BDT>>wzjets","type==0","goff");
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t_phys -> Draw("MVA_BDT>>wzjets","","goff");
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t_qcd -> Draw("MVA_BDT>>qcd","","goff");
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set_overflow_bins(data);
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set_overflow_bins(ttbar);
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set_overflow_bins(wzjets);
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set_overflow_bins(qcd);
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TCanvas * c1 = new TCanvas("canvas1","canvas1",800,600);
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c1->Divide(2,2);
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TVirtualPad * pad = c1->cd(1);
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data->SetTitle("");
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data->SetNdivisions(5,"X");
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data->SetNdivisions(5,"Y");
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data->GetXaxis()->SetLabelSize( labelSize );
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data->GetYaxis()->SetLabelSize( labelSize );
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set_frame_style( data, pad, 1.2 );
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data -> Draw();
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pad->SaveAs("mu_data.eps");
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pad = c1->cd(2);
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ttbar->SetTitle("");
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ttbar->SetNdivisions(5,"X");
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ttbar->SetNdivisions(5,"Y");
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ttbar->GetXaxis()->SetLabelSize( labelSize );
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ttbar->GetYaxis()->SetLabelSize( labelSize );
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set_frame_style( ttbar, pad, 1.2 );
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ttbar -> Draw();
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pad->SaveAs("mu_ttbar_template.eps");
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pad = c1->cd(3);
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wzjets->SetTitle("");
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wzjets->SetNdivisions(5,"X");
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wzjets->SetNdivisions(5,"Y");
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wzjets->GetXaxis()->SetLabelSize( labelSize );
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wzjets->GetYaxis()->SetLabelSize( labelSize );
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set_frame_style( wzjets, pad, 1.2 );
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wzjets -> Draw();
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pad->SaveAs("mu_wzjets_template.eps");
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pad = c1->cd(4);
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qcd->SetTitle("");
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qcd->SetNdivisions(5,"X");
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qcd->SetNdivisions(5,"Y");
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qcd->GetXaxis()->SetLabelSize( labelSize );
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qcd->GetYaxis()->SetLabelSize( labelSize );
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set_frame_style( qcd, pad, 1.2 );
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qcd -> Draw();
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pad->SaveAs("mu_qcd_template.eps");
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//data_file->Close();
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//ttbar_phys_template_file->Close();
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//qcd_template_file->Close();
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delete mc;
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mc = new TObjArray(3); // MC histograms are put in this array
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mc->Add(ttbar);
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mc->Add(wzjets);
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mc->Add(qcd);
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}
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void toyMC::load_syst_templates(){
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//TFile * ttbar_template_file = new TFile("./TMVApp-phys-tauola-22may2009.root","READ");
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//TFile * ttbar_template_file = new TFile("TMVApp-ttbar-ISR_FSR_larger-23may2009.root");
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//TFile * ttbar_template_file = new TFile("TMVApp-ttbar-ISR_FSR_smaller-23may2009.root");
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-pedros-nominalISRFSR.root");
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-pedros-largerISRFSR.root");
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-pedros-smallISRFSR.root");
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//
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//_____ JES systematics
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//
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes-up-22may2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes-up-22may2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes-up-22may2009.root");
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//
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//_____ MET corrected
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//
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes-up-04jul2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes-up-04jul2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes-up-04jul2009.root");
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//
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TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes-down-04jul2009.root");
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TFile * phys_template_file = new TFile("TMVApp-phys-jes-down-04jul2009.root");
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TFile * qcd_template_file = new TFile("TMVApp-qcd-jes-down-04jul2009.root");
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//
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//_____ jes 5% up
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes_up_5_15Jun2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes_up_5_15Jun2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes_up_5_15Jun2009.root");
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//
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//_____ jes 2% up
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes_up_2_15Jun2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes_up_2_15Jun2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes_up_2_15Jun2009.root");
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//
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes-down-22may2009.root");
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//TFile * phys_template_file = new TFile("TMVApp-phys-jes-down-22may2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes-down-22may2009.root");
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//
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//_____ jes 5% down
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//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes_down_5_15Jun2009.root");
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| 296 |
//TFile * phys_template_file = new TFile("TMVApp-phys-jes_down_5_15Jun2009.root");
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| 297 |
//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes_down_5_15Jun2009.root");
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//
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| 299 |
//_____ jes 2% down
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| 300 |
//TFile * ttbar_template_file = new TFile("TMVApp-TTJets-jes_down_2_15Jun2009.root");
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| 301 |
//TFile * phys_template_file = new TFile("TMVApp-phys-jes_down_2_15Jun2009.root");
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//TFile * qcd_template_file = new TFile("TMVApp-qcd-jes_down_2_15Jun2009.root");
|
| 303 |
//
|
| 304 |
TTree * t_ttbar = (TTree *)ttbar_template_file->Get("classifier");
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| 305 |
TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
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| 306 |
TTree * t_qcd = (TTree *)qcd_template_file->Get("classifier");
|
| 307 |
//
|
| 308 |
//_____ WJets threshold 20 GeV
|
| 309 |
//
|
| 310 |
//TFile * phys_template_file = new TFile("TMVApp-phys-WJets-threshold20-23may2009.root");
|
| 311 |
//TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
|
| 312 |
//
|
| 313 |
//_____ WJets threshold 5 GeV
|
| 314 |
//
|
| 315 |
//TFile * phys_template_file = new TFile("TMVApp-phys-WJets-threshold5-23may2009.root");
|
| 316 |
//TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
|
| 317 |
//
|
| 318 |
//_____ WJets Q^2 scale up
|
| 319 |
//
|
| 320 |
//TFile * phys_template_file = new TFile("TMVApp-phys-WJets-scaleup-28may2009.root");
|
| 321 |
//TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
|
| 322 |
//
|
| 323 |
//_____ WJets Q^2 scale down
|
| 324 |
//
|
| 325 |
//TFile * phys_template_file = new TFile("TMVApp-phys-WJets-scaledown-28may2009.root");
|
| 326 |
//TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
|
| 327 |
//
|
| 328 |
//_____ Phys template w and tW fixed
|
| 329 |
//
|
| 330 |
//TFile * phys_template_file = new TFile("TMVApp-phys-30may2009.root");
|
| 331 |
//TTree * t_phys = (TTree *)phys_template_file->Get("classifier");
|
| 332 |
//
|
| 333 |
//_____ nominal
|
| 334 |
//
|
| 335 |
//TFile * ttbar_phys_template_file = new TFile("./TMVA.root","READ");
|
| 336 |
//TFile * qcd_template_file = new TFile("./TMVApp-qcd-16may2009.root","READ");
|
| 337 |
//
|
| 338 |
//TTree * t_ttbar = (TTree *)ttbar_phys_template_file->Get("TestTree");
|
| 339 |
//TTree * t_ttbar = (TTree *)ttbar_template_file->Get("classifier");
|
| 340 |
//TTree * t_phys = (TTree *)ttbar_phys_template_file->Get("TestTree");
|
| 341 |
//TTree * t_qcd = (TTree *)qcd_template_file->Get("classifier");
|
| 342 |
|
| 343 |
delete ttbar_s;
|
| 344 |
delete wzjets_s;
|
| 345 |
delete qcd_s;
|
| 346 |
ttbar_s = new TH1F("ttbar_s" ,"ttbar_s" ,n_bins, -0.8, 0.8);
|
| 347 |
wzjets_s = new TH1F("wzjets_s","wzjets_s",n_bins, -0.8, 0.8);
|
| 348 |
qcd_s = new TH1F("qcd_s" ,"qcd_s" ,n_bins, -0.8, 0.8);
|
| 349 |
|
| 350 |
//
|
| 351 |
ttbar_s->SetFillColor(42);
|
| 352 |
//ttbar_s->SetFillStyle(4050);
|
| 353 |
wzjets_s->SetFillColor(46);
|
| 354 |
//wzjets_s->SetFillStyle(4050);
|
| 355 |
qcd_s->SetFillColor(48);
|
| 356 |
//TSlider *slider = 0;
|
| 357 |
//
|
| 358 |
|
| 359 |
//t_ttbar -> Draw("MVA_BDT>>ttbar_s","type==1","goff");
|
| 360 |
t_ttbar -> Draw("MVA_BDT>>ttbar_s","","goff");
|
| 361 |
//t_phys -> Draw("MVA_BDT>>wzjets_s","type==0","goff");
|
| 362 |
t_phys -> Draw("MVA_BDT>>wzjets_s","","goff");
|
| 363 |
t_qcd -> Draw("MVA_BDT>>qcd_s","","goff");
|
| 364 |
|
| 365 |
set_overflow_bins(ttbar_s);
|
| 366 |
set_overflow_bins(wzjets_s);
|
| 367 |
set_overflow_bins(qcd_s);
|
| 368 |
/*
|
| 369 |
TCanvas * c1 = new TCanvas("canvas1","canvas1",800,600);
|
| 370 |
c1->Divide(2,2);
|
| 371 |
TVirtualPad * pad = c1->cd(1);
|
| 372 |
//
|
| 373 |
pad = c1->cd(2);
|
| 374 |
ttbar_s -> Draw();
|
| 375 |
pad->SaveAs("mu_ttbar_s_template.eps");
|
| 376 |
//
|
| 377 |
pad = c1->cd(3);
|
| 378 |
wzjets_s -> Draw();
|
| 379 |
pad->SaveAs("mu_wzjets_s_template.eps");
|
| 380 |
//
|
| 381 |
pad = c1->cd(4);
|
| 382 |
qcd_s -> Draw();
|
| 383 |
pad->SaveAs("mu_qcd_s_template.eps");
|
| 384 |
*/
|
| 385 |
}
|
| 386 |
|
| 387 |
|
| 388 |
void toyMC::load_ejets_templates(){
|
| 389 |
TFile * data_file = new TFile("./TMVApp-data-electron-18may2009.root","READ");
|
| 390 |
//TFile * data_file = new TFile("./TMVApp-data-electron_noqcd.root","READ");
|
| 391 |
//TFile * data_file = new TFile("./TMVApp-data-electron_wzfastsim-08may2009.root","READ");
|
| 392 |
//TFile * data_file = new TFile("./TMVApp-data-electron_wzfastsim-08may2009.root","READ");
|
| 393 |
TFile * ttbar_phys_template_file = new TFile("./TMVA_wjets.root","READ");
|
| 394 |
TFile * qcd_template_file = new TFile("TMVApp-qcd-electron-18may2009.root","READ");
|
| 395 |
|
| 396 |
//TChain * t_data = new TChain("classifier");
|
| 397 |
//t_data->Add("./TMVApp-data-electron_noqcd.root");
|
| 398 |
//t_data->Add("./TMVApp-data-electron_qcdonly.root");
|
| 399 |
//t_data->Add("./TMVApp-data-electron_200.root");
|
| 400 |
|
| 401 |
TTree * t_data = (TTree *)data_file->Get("classifier");
|
| 402 |
TTree * t_ttbar_phys = (TTree *)ttbar_phys_template_file->Get("TestTree");
|
| 403 |
TTree * t_qcd = (TTree *)qcd_template_file->Get("classifier");
|
| 404 |
|
| 405 |
delete data;
|
| 406 |
delete ttbar;
|
| 407 |
delete wzjets;
|
| 408 |
delete qcd;
|
| 409 |
|
| 410 |
data = new TH1F("data" ,"data" ,n_bins, -0.8, 0.8);
|
| 411 |
ttbar = new TH1F("ttbar" ,"ttbar" ,n_bins, -0.8, 0.8);
|
| 412 |
wzjets = new TH1F("wzjets","wzjets",n_bins, -0.8, 0.8);
|
| 413 |
qcd = new TH1F("qcd" ,"qcd" ,n_bins, -0.8, 0.8);
|
| 414 |
|
| 415 |
//
|
| 416 |
data->SetMarkerStyle(21);
|
| 417 |
data->SetMarkerSize(0.7);
|
| 418 |
//data->SetFillStyle(4050);
|
| 419 |
ttbar->SetFillColor(42);
|
| 420 |
//ttbar->SetFillStyle(4050);
|
| 421 |
wzjets->SetFillColor(46);
|
| 422 |
//wzjets->SetFillStyle(4050);
|
| 423 |
qcd->SetFillColor(48);
|
| 424 |
//TSlider *slider = 0;
|
| 425 |
//
|
| 426 |
|
| 427 |
TCanvas * c1 = new TCanvas("canvas1","canvas1",800,600);
|
| 428 |
c1->Divide(2,2);
|
| 429 |
TVirtualPad * pad = c1->cd(1);
|
| 430 |
t_data -> Draw("MVA_BDT>>data");
|
| 431 |
pad->SaveAs("e_data.eps");
|
| 432 |
pad = c1->cd(2);
|
| 433 |
t_ttbar_phys -> Draw("MVA_BDT>>ttbar","type==1");
|
| 434 |
pad->SaveAs("e_ttbar_template.eps");
|
| 435 |
pad = c1->cd(3);
|
| 436 |
t_ttbar_phys -> Draw("MVA_BDT>>wzjets","type==0");
|
| 437 |
pad->SaveAs("e_wzjets_template.eps");
|
| 438 |
pad = c1->cd(4);
|
| 439 |
t_qcd -> Draw("MVA_BDT>>qcd");
|
| 440 |
pad->SaveAs("e_qcd_template.eps");
|
| 441 |
|
| 442 |
//data_file->Close();
|
| 443 |
//ttbar_phys_template_file->Close();
|
| 444 |
//qcd_template_file->Close();
|
| 445 |
|
| 446 |
delete mc;
|
| 447 |
mc = new TObjArray(3); // MC histograms are put in this array
|
| 448 |
mc->Add(ttbar);
|
| 449 |
mc->Add(wzjets);
|
| 450 |
mc->Add(qcd);
|
| 451 |
}
|
| 452 |
|
| 453 |
|
| 454 |
int toyMC::do_fit(TH1F * _data, double qcd_frac){
|
| 455 |
delete fit;
|
| 456 |
fit = new TFractionFitter(_data, mc); // initialise
|
| 457 |
|
| 458 |
fit->Constrain(1,0.0,1.0); // constrain fraction 1 to be between 0 and 1
|
| 459 |
fit->Constrain(2,0.0,1.0);
|
| 460 |
if (qcd_frac<0.0){
|
| 461 |
fit->Constrain(3,0.0,1.0);
|
| 462 |
}
|
| 463 |
else{
|
| 464 |
fit->Constrain(3,qcd_frac-0.000001,qcd_frac+0.000001); // constrain fraction 1 to be between 0 and 1
|
| 465 |
}
|
| 466 |
fit->SetRangeX(1,n_bins); // use only some bins to fit
|
| 467 |
Int_t status = fit->Fit(); // perform the fit
|
| 468 |
if (status!=0) status = fit->Fit();
|
| 469 |
cout << "fit status: " << status << endl;
|
| 470 |
return status;
|
| 471 |
}
|
| 472 |
|
| 473 |
/*
|
| 474 |
int toyMC::fit1(TH1F * _data, double bkg2_low = 0.0, bkg2_high = 1.0){
|
| 475 |
delete fit;
|
| 476 |
fit = new TFractionFitter(_data, mc); // initialise
|
| 477 |
|
| 478 |
fit->Constrain(1,data_low,data_high); // constrain fraction 1 to be between 0 and 1
|
| 479 |
fit->Constrain(2,bkg1_low,bkg1_high); // constrain fraction 1 to be between 0 and 1
|
| 480 |
fit->Constrain(3,bkg2_low,bkg2_high); // constrain fraction 1 to be between 0 and 1
|
| 481 |
fit->SetRangeX(first_bin,last_bin); // use only some bins to fit
|
| 482 |
Int_t status = fit->Fit(); // perform the fit
|
| 483 |
if (status!=0) status = fit->Fit(); // make one more attempt to fit if the first one fails
|
| 484 |
cout << "fit status: " << status << endl;
|
| 485 |
return status;
|
| 486 |
}
|
| 487 |
*/
|
| 488 |
|
| 489 |
//
|
| 490 |
//_____ generates a pseudoexperiment, given n_events, smears by Poisson _
|
| 491 |
//
|
| 492 |
int toyMC::generate_toy(int n_sig, int n_bg, int n_qcd){
|
| 493 |
int n_events=0;
|
| 494 |
delete toy_data;
|
| 495 |
|
| 496 |
toy_data = new TH1F("toy_data" ,"toy_data" ,n_bins, -0.8, 0.8);
|
| 497 |
|
| 498 |
int _nsig = _random.Poisson(n_sig);
|
| 499 |
int _nbg = _random.Poisson(n_bg);
|
| 500 |
int _nqcd = _random.Poisson(n_qcd);
|
| 501 |
//int _nqcd = n_qcd;
|
| 502 |
|
| 503 |
n_gen_sig = _nsig;
|
| 504 |
n_gen_bkg1 = _nbg;
|
| 505 |
n_gen_bkg2 = _nqcd;
|
| 506 |
n_events = _nsig+_nbg+_nqcd;
|
| 507 |
|
| 508 |
for (int i=0;i<_nsig;i++){
|
| 509 |
toy_data->Fill(ttbar->GetRandom());
|
| 510 |
}
|
| 511 |
for (int i=0;i<_nbg;i++){
|
| 512 |
toy_data->Fill(wzjets->GetRandom());
|
| 513 |
}
|
| 514 |
|
| 515 |
for (int i=0;i<_nqcd;i++){
|
| 516 |
toy_data->Fill(qcd->GetRandom());
|
| 517 |
}
|
| 518 |
//toy_data->Draw();
|
| 519 |
set_overflow_bins(toy_data);
|
| 520 |
return n_events;
|
| 521 |
//return _nsig;
|
| 522 |
}
|
| 523 |
|
| 524 |
//
|
| 525 |
//_____ generates a pseudoexperiment, given n_events, smears by Poisson _
|
| 526 |
//
|
| 527 |
int toyMC::generate_toy_from_syst(int n_sig, int n_bg, int n_qcd){
|
| 528 |
int n_events=0;
|
| 529 |
delete toy_data;
|
| 530 |
|
| 531 |
toy_data = new TH1F("toy_data" ,"toy_data" ,n_bins, -0.8, 0.8);
|
| 532 |
|
| 533 |
int _nsig = _random.Poisson(n_sig);
|
| 534 |
int _nbg = _random.Poisson(n_bg);
|
| 535 |
int _nqcd = _random.Poisson(n_qcd);
|
| 536 |
//int _nqcd = n_qcd;
|
| 537 |
|
| 538 |
n_gen_sig = _nsig;
|
| 539 |
n_gen_bkg1 = _nbg;
|
| 540 |
n_gen_bkg2 = _nqcd;
|
| 541 |
n_events = _nsig+_nbg+_nqcd;
|
| 542 |
|
| 543 |
for (int i=0;i<_nsig;i++){
|
| 544 |
toy_data->Fill(ttbar_s->GetRandom());
|
| 545 |
}
|
| 546 |
for (int i=0;i<_nbg;i++){
|
| 547 |
toy_data->Fill(wzjets_s->GetRandom());
|
| 548 |
}
|
| 549 |
|
| 550 |
for (int i=0;i<_nqcd;i++){
|
| 551 |
toy_data->Fill(qcd_s->GetRandom());
|
| 552 |
}
|
| 553 |
//toy_data->Draw();
|
| 554 |
set_overflow_bins(toy_data);
|
| 555 |
return n_events;
|
| 556 |
//return _nsig;
|
| 557 |
}
|
| 558 |
|
| 559 |
void toyMC::set_overflow_bins(TH1F * h){
|
| 560 |
Int_t _last_bin = h->GetNbinsX();
|
| 561 |
Double_t _overflow = h->GetBinContent(_last_bin+1);
|
| 562 |
Int_t n_entries = (Int_t)h->GetEntries();
|
| 563 |
//h->ResetBit(TH1::kCanRebin);
|
| 564 |
h->AddBinContent(1,h->GetBinContent(0));
|
| 565 |
h->AddBinContent(_last_bin,_overflow);
|
| 566 |
h->SetBinContent(0,0);
|
| 567 |
h->SetBinContent(_last_bin+1,0);
|
| 568 |
h->SetEntries(n_entries);
|
| 569 |
}
|
| 570 |
|
| 571 |
|
| 572 |
void toyMC::debug_hist(TH1F * h){
|
| 573 |
cout << "DEBUG: number of entries: " << h->GetEntries() << endl;
|
| 574 |
cout << "DEBUG: underflow: " << h->GetBinContent(0) << endl;
|
| 575 |
cout << "DEBUG: bin1: " << h->GetBinContent(1) << endl;
|
| 576 |
Int_t _last_bin = h->GetNbinsX();
|
| 577 |
cout << "DEBUG: last bin: " << h->GetBinContent(_last_bin) << endl;
|
| 578 |
cout << "DEBUG: overflow: " << h->GetBinContent(_last_bin+1) << endl;
|
| 579 |
}
|
| 580 |
|
| 581 |
|
| 582 |
int toyMC::fit_data(){
|
| 583 |
//load_templates();
|
| 584 |
//load_ejets_templates();
|
| 585 |
int _res = do_fit(data,0.0162116);
|
| 586 |
int n_data = data->GetEntries();
|
| 587 |
TH1F * result = (TH1F*) fit->GetPlot();
|
| 588 |
result->SetFillColor(16);
|
| 589 |
//result->SetFillStyle(4050);
|
| 590 |
data->SetMinimum(0);
|
| 591 |
TCanvas * c = new TCanvas("canvas2","canvas2",800,600);
|
| 592 |
data->Draw("Ep");
|
| 593 |
result->Draw("same");
|
| 594 |
//
|
| 595 |
Double_t value,error;
|
| 596 |
fit->GetResult(0,value,error);
|
| 597 |
ttbar->Scale(n_data*value/ttbar->Integral());
|
| 598 |
ttbar->Draw("same");
|
| 599 |
//
|
| 600 |
fit->GetResult(1,value,error);
|
| 601 |
wzjets->Scale(n_data*value/wzjets->Integral());
|
| 602 |
wzjets->Draw("same");
|
| 603 |
//
|
| 604 |
fit->GetResult(2,value,error);
|
| 605 |
qcd->Scale(n_data*value/qcd->Integral());
|
| 606 |
qcd->Draw("same");
|
| 607 |
data->Draw("Ep:same");
|
| 608 |
//
|
| 609 |
c->SaveAs("fit.eps");
|
| 610 |
return _res;
|
| 611 |
}
|
| 612 |
|
| 613 |
|
| 614 |
|
| 615 |
int toyMC::fit_data_stacked(){
|
| 616 |
//load_templates();
|
| 617 |
//load_ejets_templates();
|
| 618 |
int _res = do_fit(data,0.0162116);
|
| 619 |
int n_data = data->GetEntries();
|
| 620 |
TH1F * result = (TH1F*) fit->GetPlot();
|
| 621 |
result->SetFillColor(16);
|
| 622 |
//result->SetFillStyle(4050);
|
| 623 |
data->SetMinimum(0);
|
| 624 |
TCanvas * c = new TCanvas("canvas2","canvas2",800,600);
|
| 625 |
data->Draw("Ep");
|
| 626 |
//result->Draw("same");
|
| 627 |
//
|
| 628 |
Double_t value,error;
|
| 629 |
fit->GetResult(0,value,error);
|
| 630 |
ttbar->Scale(n_data*value/ttbar->Integral());
|
| 631 |
//
|
| 632 |
fit->GetResult(1,value,error);
|
| 633 |
wzjets->Scale(n_data*value/wzjets->Integral());
|
| 634 |
//
|
| 635 |
fit->GetResult(2,value,error);
|
| 636 |
qcd->Scale(n_data*value/qcd->Integral());
|
| 637 |
//
|
| 638 |
wzjets->Add(qcd);
|
| 639 |
ttbar->Add(wzjets);
|
| 640 |
//
|
| 641 |
ttbar->Draw("same");
|
| 642 |
wzjets->Draw("same");
|
| 643 |
qcd->Draw("same");
|
| 644 |
data->Draw("Ep:same");
|
| 645 |
//
|
| 646 |
c->SaveAs("fit.eps");
|
| 647 |
return _res;
|
| 648 |
}
|
| 649 |
|
| 650 |
|
| 651 |
|
| 652 |
std::pair<double,double> toyMC::do_toys(double n_sig, double n_bkg1, double n_bkg2, int n_exp){
|
| 653 |
pair<double, double> result;
|
| 654 |
v_mean.clear();
|
| 655 |
v_error.clear();
|
| 656 |
v_pull.clear();
|
| 657 |
double n_total = n_sig+n_bkg1+n_bkg2;
|
| 658 |
|
| 659 |
TH1F * toy_mean = new TH1F("mean" ,"ttbar signal yield" ,50, n_sig-5.0*sqrt(n_sig), n_sig+5.0*sqrt(n_sig));
|
| 660 |
TH1F * toy_error = new TH1F("error" ,"ttbar signal yield error" ,50, 0, 3.0*sqrt(n_sig));
|
| 661 |
TH1F * toy_pull = new TH1F("pull" ,"pull" ,50, -3, 3);
|
| 662 |
toy_mean->SetFillColor(44);
|
| 663 |
toy_error->SetFillColor(44);
|
| 664 |
toy_pull->SetFillColor(44);
|
| 665 |
for (int i=0;i<n_exp;i++){
|
| 666 |
double n_bkg2_smeared = n_bkg2;
|
| 667 |
/************
|
| 668 |
//_____ smear qcd rate due to xsec uncertainty
|
| 669 |
//
|
| 670 |
n_bkg2_smeared = -1.0;
|
| 671 |
while (n_bkg2_smeared < 0.0){
|
| 672 |
n_bkg2_smeared = _random.Gaus(n_bkg2,n_bkg2);
|
| 673 |
}
|
| 674 |
*************/
|
| 675 |
//generate_toy(n_sig,n_bkg1,n_bkg2_smeared);
|
| 676 |
generate_toy_from_syst(n_sig,n_bkg1,n_bkg2_smeared);
|
| 677 |
int _ttbar = n_gen_sig;
|
| 678 |
double n_gen_total = (double)(n_gen_sig + n_gen_bkg1 + n_gen_bkg2);
|
| 679 |
//
|
| 680 |
//_____ nominal
|
| 681 |
//
|
| 682 |
double qcd_rate = 9.5;
|
| 683 |
//
|
| 684 |
//_____ nominal
|
| 685 |
//
|
| 686 |
//double qcd_rate = 6.175;
|
| 687 |
//double qcd_rate = 16.625;
|
| 688 |
//
|
| 689 |
//double qcd_rate = 19.0;
|
| 690 |
//double qcd_rate = 0.0;
|
| 691 |
// ABCD uncertainty:
|
| 692 |
//double qcd_rate = 16.6;
|
| 693 |
//double qcd_rate = 2.4;
|
| 694 |
double qcd_rate_err = 6.7;
|
| 695 |
double qcd_rate_smeared = qcd_rate;
|
| 696 |
/*************
|
| 697 |
//_____ smearing of the ABCD prediction
|
| 698 |
//
|
| 699 |
double qcd_rate_smeared = -1.0;
|
| 700 |
while (qcd_rate_smeared < 0.0){
|
| 701 |
qcd_rate_smeared = _random.Gaus(qcd_rate,qcd_rate_err);
|
| 702 |
}
|
| 703 |
**************/
|
| 704 |
double qcd_frac = qcd_rate_smeared/(double)(n_gen_sig+n_gen_bkg1+n_gen_bkg2);
|
| 705 |
int status = do_fit(toy_data, qcd_frac);
|
| 706 |
if (status==0){
|
| 707 |
Double_t value,error;
|
| 708 |
fit->GetResult(0,value,error);
|
| 709 |
toy_mean->Fill(value*n_gen_total);
|
| 710 |
v_mean.push_back(value*n_gen_total);
|
| 711 |
v_error.push_back(error*n_gen_total);
|
| 712 |
toy_error->Fill(error*n_gen_total);
|
| 713 |
//toy_pull->Fill((value*n_gen_total-(Double_t)_ttbar)/n_gen_total/error);
|
| 714 |
toy_pull->Fill((value*n_gen_total-n_sig)/n_gen_total/error);
|
| 715 |
v_pull.push_back((value*n_gen_total-n_sig)/n_gen_total/error);
|
| 716 |
}
|
| 717 |
}
|
| 718 |
TCanvas * c = new TCanvas("canvas","canvas",800,600);
|
| 719 |
c->Divide(2,2);
|
| 720 |
TVirtualPad * pad = c->cd(1);
|
| 721 |
toy_mean->Fit("gaus");
|
| 722 |
TF1 * _fit = toy_mean->GetFunction("gaus");
|
| 723 |
result.first = _fit->GetParameter(1);
|
| 724 |
result.second = _fit->GetParError(1);
|
| 725 |
//result.second = _fit->GetParameter(2);
|
| 726 |
pad->SaveAs("mean.eps");
|
| 727 |
pad = c->cd(2);
|
| 728 |
toy_error->Draw();
|
| 729 |
pad->SaveAs("error.eps");
|
| 730 |
pad = c->cd(3);
|
| 731 |
toy_pull->Fit("gaus");
|
| 732 |
pad->SaveAs("pull.eps");
|
| 733 |
|
| 734 |
return result;
|
| 735 |
}
|
| 736 |
|
| 737 |
|
| 738 |
// set frame styles
|
| 739 |
void toyMC::set_frame_style( TH1* frame, TVirtualPad * pad, Float_t scale )
|
| 740 |
{
|
| 741 |
frame->SetTitle("");
|
| 742 |
frame->SetLabelOffset( 0.012, "X" );// label offset on x axis
|
| 743 |
frame->SetLabelOffset( 0.012, "Y" );// label offset on x axis
|
| 744 |
frame->GetXaxis()->SetTitle( "" );
|
| 745 |
frame->GetYaxis()->SetTitle( "" );
|
| 746 |
frame->GetXaxis()->SetTitleOffset( 1.25 );
|
| 747 |
frame->GetYaxis()->SetTitleOffset( 1.22 );
|
| 748 |
frame->GetXaxis()->SetTitleSize( 0.045*scale );
|
| 749 |
frame->GetYaxis()->SetTitleSize( 0.045*scale );
|
| 750 |
Float_t labelSize = 0.06*scale;
|
| 751 |
frame->GetXaxis()->SetLabelSize( labelSize );
|
| 752 |
frame->GetYaxis()->SetLabelSize( labelSize );
|
| 753 |
|
| 754 |
// global style settings
|
| 755 |
pad->SetTicks();
|
| 756 |
pad->SetLeftMargin ( 0.108*scale );
|
| 757 |
pad->SetRightMargin ( 0.050*scale );
|
| 758 |
pad->SetBottomMargin( 0.120*scale );
|
| 759 |
}
|
| 760 |
|
| 761 |
double toyMC::print_chisq( TH1 * h1, TH1 * h2 ){
|
| 762 |
double result = -1.0;
|
| 763 |
int n_bins = h1->GetNbinsX();
|
| 764 |
double chisq = 0.0;
|
| 765 |
for (int i=0; i!=n_bins; i++){
|
| 766 |
double bin1 = h1->GetBinContent(i+1);
|
| 767 |
double bin2 = h2->GetBinContent(i+1);
|
| 768 |
//chisq+=(h1->GetBinContent(i+1)-h2->GetBinContent(i+1))*(h1->GetBinContent(i+1)-h2->GetBinContent(i+1));
|
| 769 |
double err1 = sqrt(bin1);
|
| 770 |
chisq+=(bin1-bin2)*(bin1-bin2)/err1/err1;
|
| 771 |
}
|
| 772 |
result = chisq;// (double)n_bins;
|
| 773 |
cout << result << endl;
|
| 774 |
return result;
|
| 775 |
}
|
