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EventSelection.h
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EventSelection.h
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#ifndef _EventSelection_H_
#define _EventSelection_H_
#include <TROOT.h>
#include <TChain.h>
#include <TFile.h>
#include <TMath.h>
#include <TH1F.h>
#include <TH1D.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <TH2.h>
#include <TStyle.h>
#include <TCanvas.h>
#include <TLorentzVector.h>
#include <TH3F.h>
#include <TRandom3.h>
#include <TMinuit.h>
#include <TApplication.h>
#include <TEnv.h>
#include <TComplex.h>
#include <TH2D.h>
#include "Math/LorentzVector.h"
using namespace std;
void GenPart_Filter(int &Is_Hbb, TLorentzVector &GenHiggs, TLorentzVector &GenBquarkFromH, TLorentzVector &GenantiBquarkFromH,
TLorentzVector &GenVBFJets0, TLorentzVector &GenVBFJets1,
int nGenPart, int *GenPart_status, int *GenPart_pdgId, int *GenPart_genPartIdxMother,
float *GenPart_pt, float *GenPart_eta, float *GenPart_phi, float *GenPart_mass)
{
int double_count_Hbb = 0;
for (int ipart = 0; ipart < nGenPart; ipart++)
{
if (GenPart_status[ipart] == 62 && GenPart_pdgId[ipart] == 25)
GenHiggs.SetPtEtaPhiM(GenPart_pt[ipart], GenPart_eta[ipart], GenPart_phi[ipart], GenPart_mass[ipart]);
if (GenPart_pdgId[ipart] == -5 || GenPart_pdgId[ipart] == 5)
{
if (GenPart_pdgId[GenPart_genPartIdxMother[ipart]] != 25 || GenPart_status[GenPart_genPartIdxMother[ipart]] != 62)
continue;
if (GenPart_pdgId[ipart] == 5)
GenBquarkFromH.SetPtEtaPhiM(GenPart_pt[ipart], GenPart_eta[ipart], GenPart_phi[ipart], GenPart_mass[ipart]);
if (GenPart_pdgId[ipart] == -5)
GenantiBquarkFromH.SetPtEtaPhiM(GenPart_pt[ipart], GenPart_eta[ipart], GenPart_phi[ipart], GenPart_mass[ipart]);
double_count_Hbb++; // each Hbb event will count 2 in b, so called double count
}
}
// keep track of the final W(pdgId=+-24)(status=62) and their daughters(2 quarks or 2 leptons/neutrino)
// keep track of VBF quarks(pdgId=+-1,2,3,4,5,6), the mothers should be quarks from protons(search for pdgId), their daughters should be W and quark. Instance 2,3 are always the VBF jets. GenPart[2] and GenPart[3]
GenVBFJets0.SetPtEtaPhiM(GenPart_pt[2], GenPart_eta[2], GenPart_phi[2], GenPart_mass[2]);
GenVBFJets1.SetPtEtaPhiM(GenPart_pt[3], GenPart_eta[3], GenPart_phi[3], GenPart_mass[3]);
if (double_count_Hbb == 2)
Is_Hbb = 1;
else
Is_Hbb = 0;
}
int VBF_Selection(int VBF_method, int &VBF_jet_index0, int &VBF_jet_index1,
float &VBF_max_mass, float &VBF_max_DeltaEta, int count_jet, TLorentzVector *Jet)
{
int VBF_selection = 0;
/********* VBF max mass selection method ***********/
if (VBF_method == 1)
{
for (int ivbf = 0; ivbf < count_jet; ivbf++)
{
for (int ivbf2 = ivbf; ivbf2 < count_jet; ivbf2++)
{
if ((Jet[ivbf] + Jet[ivbf2]).M() > VBF_max_mass)
{
if (Jet[ivbf].Pt() > Jet[ivbf2].Pt())
{
VBF_jet_index0 = ivbf;
VBF_jet_index1 = ivbf2;
}
if (Jet[ivbf].Pt() < Jet[ivbf2].Pt())
{
VBF_jet_index0 = ivbf2;
VBF_jet_index1 = ivbf;
}
VBF_max_mass = (Jet[ivbf] + Jet[ivbf2]).M();
}
}
}
}
/************ VBF max DeltaEta selection method ***************/
VBF_max_mass = 0;
VBF_max_DeltaEta = 0;
if (VBF_method == 2)
{
for (int ivbf = 0; ivbf < count_jet; ivbf++)
{
for (int ivbf2 = ivbf; ivbf2 < count_jet; ivbf2++)
{
if (fabs(Jet[ivbf].Eta() - Jet[ivbf2].Eta()) > VBF_max_DeltaEta)
{
if (Jet[ivbf].Pt() > Jet[ivbf2].Pt())
{
VBF_jet_index0 = ivbf;
VBF_jet_index1 = ivbf2;
}
if (Jet[ivbf].Pt() < Jet[ivbf2].Pt())
{
VBF_jet_index0 = ivbf2;
VBF_jet_index1 = ivbf;
}
VBF_max_DeltaEta = fabs(Jet[ivbf].Eta() - Jet[ivbf2].Eta());
}
}
}
}
/************ VBF max energy method ************/
VBF_max_DeltaEta = 0;
if (VBF_method == 3)
{
float VBF_max_Energy = 0;
for (int ivbf = 0; ivbf < count_jet; ivbf++)
{
if (Jet[ivbf].E() > VBF_max_Energy)
{
VBF_jet_index0 = ivbf;
VBF_max_Energy = Jet[ivbf].E();
}
} // select max energy jet
VBF_max_Energy = 0;
int opposite_eta = 0;
for (int ivbf = 0; ivbf < count_jet; ivbf++)
{
if (ivbf == VBF_jet_index0)
continue;
if (Jet[ivbf].Eta() * Jet[VBF_jet_index0].Eta() > 0)
continue;
opposite_eta = 1;
if (Jet[ivbf].E() > VBF_max_Energy)
{
VBF_jet_index1 = ivbf;
VBF_max_Energy = Jet[ivbf].E();
}
}
VBF_max_Energy = 0;
if (opposite_eta == 0)
{
for (int ivbf = 0; ivbf < count_jet; ivbf++)
{
if (ivbf == VBF_jet_index0)
continue;
if (Jet[ivbf].E() > VBF_max_Energy)
{
VBF_jet_index1 = ivbf;
VBF_max_Energy = Jet[ivbf].E();
}
}
}
}
VBF_max_mass = (Jet[VBF_jet_index0] + Jet[VBF_jet_index1]).M();
VBF_max_DeltaEta = fabs(Jet[VBF_jet_index0].Eta() - Jet[VBF_jet_index1].Eta());
if (VBF_max_mass > 500 && VBF_max_DeltaEta > 3)
// (VBF_max_mass > 500)
VBF_selection = 1;
return VBF_selection;
}
#endif // end define _EventSelection_H_