1 |
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2 | /** \class PileUpJetID
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3 | *
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4 | * CMS PileUp Jet ID Variables
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5 | *
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6 | * \author S. Zenz
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7 | *
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8 | */
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9 |
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10 | #include "modules/PileUpJetID.h"
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11 |
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12 | #include "classes/DelphesClasses.h"
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13 | #include "classes/DelphesFactory.h"
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14 | #include "classes/DelphesFormula.h"
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15 |
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16 | #include "ExRootAnalysis/ExRootClassifier.h"
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17 | #include "ExRootAnalysis/ExRootFilter.h"
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18 | #include "ExRootAnalysis/ExRootResult.h"
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19 |
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20 | #include "TFormula.h"
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21 | #include "TMath.h"
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22 | #include "TObjArray.h"
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23 | #include "TRandom3.h"
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24 | #include "TString.h"
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25 | //#include "TDatabasePDG.h"
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26 | #include "TLorentzVector.h"
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27 |
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28 | #include <algorithm>
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29 | #include <iostream>
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30 | #include <sstream>
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31 | #include <stdexcept>
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32 |
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33 | using namespace std;
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34 |
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35 | //------------------------------------------------------------------------------
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36 |
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37 | PileUpJetID::PileUpJetID() :
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38 | fItJetInputArray(0), fTrackInputArray(0), fNeutralInputArray(0)
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39 | {
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40 | }
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41 |
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42 | //------------------------------------------------------------------------------
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43 |
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44 | PileUpJetID::~PileUpJetID()
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45 | {
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46 | }
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47 |
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48 | //------------------------------------------------------------------------------
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49 |
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50 | void PileUpJetID::Init()
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51 | {
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52 |
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53 | fJetPTMin = GetDouble("JetPTMin", 20.0);
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54 | fParameterR = GetDouble("ParameterR", 0.5);
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55 | fUseConstituents = GetInt("UseConstituents", 0);
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56 |
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57 | fMeanSqDeltaRMaxBarrel = GetDouble("MeanSqDeltaRMaxBarrel", 0.1);
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58 | fBetaMinBarrel = GetDouble("BetaMinBarrel", 0.1);
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59 | fMeanSqDeltaRMaxEndcap = GetDouble("MeanSqDeltaRMaxEndcap", 0.1);
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60 | fBetaMinEndcap = GetDouble("BetaMinEndcap", 0.1);
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61 | fMeanSqDeltaRMaxForward = GetDouble("MeanSqDeltaRMaxForward", 0.1);
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62 | fJetPTMinForNeutrals = GetDouble("JetPTMinForNeutrals", 20.0);
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63 | fNeutralPTMin = GetDouble("NeutralPTMin", 2.0);
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64 |
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65 | fAverageEachTower = false; // for timing
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66 |
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67 | // import input array(s)
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68 |
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69 | fJetInputArray = ImportArray(GetString("JetInputArray", "FastJetFinder/jets"));
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70 | fItJetInputArray = fJetInputArray->MakeIterator();
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71 |
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72 | fTrackInputArray = ImportArray(GetString("TrackInputArray", "ParticlePropagator/tracks"));
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73 | fItTrackInputArray = fTrackInputArray->MakeIterator();
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74 |
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75 | fNeutralInputArray = ImportArray(GetString("NeutralInputArray", "ParticlePropagator/tracks"));
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76 | fItNeutralInputArray = fNeutralInputArray->MakeIterator();
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77 |
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78 | // create output array(s)
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79 |
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80 | fOutputArray = ExportArray(GetString("OutputArray", "jets"));
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81 |
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82 | fNeutralsInPassingJets = ExportArray(GetString("NeutralsInPassingJets", "eflowtowers"));
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83 | }
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84 |
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85 | //------------------------------------------------------------------------------
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86 |
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87 | void PileUpJetID::Finish()
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88 | {
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89 | // cout << "In finish" << endl;
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90 |
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91 | if(fItJetInputArray) delete fItJetInputArray;
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92 | if(fItTrackInputArray) delete fItTrackInputArray;
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93 | if(fItNeutralInputArray) delete fItNeutralInputArray;
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94 | }
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95 |
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96 | //------------------------------------------------------------------------------
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97 |
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98 | void PileUpJetID::Process()
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99 | {
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100 | Candidate *candidate, *constituent;
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101 | TLorentzVector momentum, area;
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102 |
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103 | Candidate *trk;
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104 |
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105 | // loop over all input candidates
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106 | fItJetInputArray->Reset();
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107 | while((candidate = static_cast<Candidate *>(fItJetInputArray->Next())))
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108 | {
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109 | momentum = candidate->Momentum;
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110 | area = candidate->Area;
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111 |
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112 | float sumT0 = 0.;
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113 | float sumT1 = 0.;
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114 | float sumT10 = 0.;
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115 | float sumT20 = 0.;
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116 | float sumT30 = 0.;
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117 | float sumT40 = 0.;
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118 | float sumWeightsForT = 0.;
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119 | candidate->NTimeHits = 0;
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120 |
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121 | float sumpt = 0.;
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122 | float sumptch = 0.;
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123 | float sumptchpv = 0.;
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124 | float sumptchpu = 0.;
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125 | float sumdrsqptsq = 0.;
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126 | float sumptsq = 0.;
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127 | int nc = 0;
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128 | int nn = 0;
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129 | float pt_ann[5];
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130 |
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131 | for(int i = 0; i < 5; i++)
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132 | {
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133 | pt_ann[i] = 0.;
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134 | }
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135 |
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136 | if(fUseConstituents)
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137 | {
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138 | TIter itConstituents(candidate->GetCandidates());
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139 | while((constituent = static_cast<Candidate *>(itConstituents.Next())))
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140 | {
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141 | float pt = constituent->Momentum.Pt();
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142 | float dr = candidate->Momentum.DeltaR(constituent->Momentum);
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143 | // cout << " There exists a constituent with dr=" << dr << endl;
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144 | sumpt += pt;
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145 | sumdrsqptsq += dr * dr * pt * pt;
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146 | sumptsq += pt * pt;
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147 | if(constituent->Charge == 0)
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148 | {
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149 | nn++;
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150 | }
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151 | else
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152 | {
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153 | if(constituent->IsRecoPU)
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154 | {
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155 | sumptchpu += pt;
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156 | }
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157 | else
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158 | {
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159 | sumptchpv += pt;
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160 | }
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161 | sumptch += pt;
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162 | nc++;
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163 | }
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164 | for(int i = 0; i < 5; i++)
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165 | {
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166 | if(dr > 0.1 * i && dr < 0.1 * (i + 1))
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167 | {
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168 | pt_ann[i] += pt;
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169 | }
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170 | }
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171 | float tow_sumT = 0;
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172 | float tow_sumW = 0;
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173 | for(int i = 0; i < constituent->ECalEnergyTimePairs.size(); i++)
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174 | {
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175 | float w = TMath::Sqrt(constituent->ECalEnergyTimePairs[i].first);
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176 | if(fAverageEachTower)
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177 | {
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178 | tow_sumT += w * constituent->ECalEnergyTimePairs[i].second;
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179 | tow_sumW += w;
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180 | }
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181 | else
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182 | {
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183 | sumT0 += w * constituent->ECalEnergyTimePairs[i].second;
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184 | sumT1 += w * gRandom->Gaus(constituent->ECalEnergyTimePairs[i].second, 0.001);
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185 | sumT10 += w * gRandom->Gaus(constituent->ECalEnergyTimePairs[i].second, 0.010);
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186 | sumT20 += w * gRandom->Gaus(constituent->ECalEnergyTimePairs[i].second, 0.020);
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187 | sumT30 += w * gRandom->Gaus(constituent->ECalEnergyTimePairs[i].second, 0.030);
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188 | sumT40 += w * gRandom->Gaus(constituent->ECalEnergyTimePairs[i].second, 0.040);
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189 | sumWeightsForT += w;
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190 | candidate->NTimeHits++;
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191 | }
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192 | }
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193 | if(fAverageEachTower && tow_sumW > 0.)
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194 | {
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195 | sumT0 += tow_sumT;
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196 | sumT1 += tow_sumW * gRandom->Gaus(tow_sumT / tow_sumW, 0.001);
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197 | sumT10 += tow_sumW * gRandom->Gaus(tow_sumT / tow_sumW, 0.0010);
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198 | sumT20 += tow_sumW * gRandom->Gaus(tow_sumT / tow_sumW, 0.0020);
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199 | sumT30 += tow_sumW * gRandom->Gaus(tow_sumT / tow_sumW, 0.0030);
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200 | sumT40 += tow_sumW * gRandom->Gaus(tow_sumT / tow_sumW, 0.0040);
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201 | sumWeightsForT += tow_sumW;
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202 | candidate->NTimeHits++;
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203 | }
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204 | }
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205 | }
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206 | else
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207 | {
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208 | // Not using constituents, using dr
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209 | fItTrackInputArray->Reset();
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210 | while((trk = static_cast<Candidate *>(fItTrackInputArray->Next())))
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211 | {
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212 | if(trk->Momentum.DeltaR(candidate->Momentum) < fParameterR)
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213 | {
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214 | float pt = trk->Momentum.Pt();
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215 | sumpt += pt;
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216 | sumptch += pt;
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217 | if(trk->IsRecoPU)
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218 | {
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219 | sumptchpu += pt;
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220 | }
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221 | else
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222 | {
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223 | sumptchpv += pt;
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224 | }
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225 | float dr = candidate->Momentum.DeltaR(trk->Momentum);
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226 | sumdrsqptsq += dr * dr * pt * pt;
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227 | sumptsq += pt * pt;
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228 | nc++;
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229 | for(int i = 0; i < 5; i++)
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230 | {
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231 | if(dr > 0.1 * i && dr < 0.1 * (i + 1))
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232 | {
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233 | pt_ann[i] += pt;
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234 | }
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235 | }
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236 | }
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237 | }
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238 | fItNeutralInputArray->Reset();
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239 | while((constituent = static_cast<Candidate *>(fItNeutralInputArray->Next())))
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240 | {
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241 | if(constituent->Momentum.DeltaR(candidate->Momentum) < fParameterR)
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242 | {
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243 | float pt = constituent->Momentum.Pt();
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244 | sumpt += pt;
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245 | float dr = candidate->Momentum.DeltaR(constituent->Momentum);
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246 | sumdrsqptsq += dr * dr * pt * pt;
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247 | sumptsq += pt * pt;
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248 | nn++;
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249 | for(int i = 0; i < 5; i++)
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250 | {
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251 | if(dr > 0.1 * i && dr < 0.1 * (i + 1))
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252 | {
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253 | pt_ann[i] += pt;
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254 | }
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255 | }
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256 | }
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257 | }
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258 | }
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259 |
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260 | if(sumptch > 0.)
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261 | {
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262 | candidate->Beta = sumptchpv / sumptch;
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263 | candidate->BetaStar = sumptchpu / sumptch;
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264 | }
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265 | else
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266 | {
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267 | candidate->Beta = -999.;
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268 | candidate->BetaStar = -999.;
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269 | }
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270 | if(sumptsq > 0.)
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271 | {
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272 | candidate->MeanSqDeltaR = sumdrsqptsq / sumptsq;
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273 | }
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274 | else
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275 | {
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276 | candidate->MeanSqDeltaR = -999.;
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277 | }
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278 | candidate->NCharged = nc;
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279 | candidate->NNeutrals = nn;
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280 | if(sumpt > 0.)
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281 | {
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282 | candidate->PTD = TMath::Sqrt(sumptsq) / sumpt;
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283 | for(int i = 0; i < 5; i++)
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284 | {
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285 | candidate->FracPt[i] = pt_ann[i] / sumpt;
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286 | }
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287 | }
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288 | else
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289 | {
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290 | candidate->PTD = -999.;
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291 | for(int i = 0; i < 5; i++)
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292 | {
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293 | candidate->FracPt[i] = -999.;
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294 | }
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295 | }
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296 |
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297 | fOutputArray->Add(candidate);
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298 |
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299 | // New stuff
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300 | /*
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301 | fMeanSqDeltaRMaxBarrel = GetDouble("MeanSqDeltaRMaxBarrel",0.1);
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302 | fBetaMinBarrel = GetDouble("BetaMinBarrel",0.1);
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303 | fMeanSqDeltaRMaxEndcap = GetDouble("MeanSqDeltaRMaxEndcap",0.1);
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304 | fBetaMinEndcap = GetDouble("BetaMinEndcap",0.1);
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305 | fMeanSqDeltaRMaxForward = GetDouble("MeanSqDeltaRMaxForward",0.1);
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306 | */
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307 |
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308 | bool passId = false;
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309 | if(candidate->Momentum.Pt() > fJetPTMinForNeutrals && candidate->MeanSqDeltaR > -0.1)
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310 | {
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311 | if(fabs(candidate->Momentum.Eta()) < 1.5)
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312 | {
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313 | passId = ((candidate->Beta > fBetaMinBarrel) && (candidate->MeanSqDeltaR < fMeanSqDeltaRMaxBarrel));
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314 | }
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315 | else if(fabs(candidate->Momentum.Eta()) < 4.0)
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316 | {
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317 | passId = ((candidate->Beta > fBetaMinEndcap) && (candidate->MeanSqDeltaR < fMeanSqDeltaRMaxEndcap));
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318 | }
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319 | else
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320 | {
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321 | passId = (candidate->MeanSqDeltaR < fMeanSqDeltaRMaxForward);
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322 | }
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323 | }
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324 |
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325 | // cout << " Pt Eta MeanSqDeltaR Beta PassId " << candidate->Momentum.Pt()
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326 | // << " " << candidate->Momentum.Eta() << " " << candidate->MeanSqDeltaR << " " << candidate->Beta << " " << passId << endl;
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327 |
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328 | if(passId)
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329 | {
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330 | if(fUseConstituents)
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331 | {
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332 | TIter itConstituents(candidate->GetCandidates());
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333 | while((constituent = static_cast<Candidate *>(itConstituents.Next())))
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334 | {
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335 | if(constituent->Charge == 0 && constituent->Momentum.Pt() > fNeutralPTMin)
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336 | {
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337 | fNeutralsInPassingJets->Add(constituent);
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338 | // cout << " Constitutent added Pt Eta Charge " << constituent->Momentum.Pt() << " " << constituent->Momentum.Eta() << " " << constituent->Charge << endl;
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339 | }
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340 | }
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341 | }
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342 | else
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343 | { // use DeltaR
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344 | fItNeutralInputArray->Reset();
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345 | while((constituent = static_cast<Candidate *>(fItNeutralInputArray->Next())))
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346 | {
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347 | if(constituent->Momentum.DeltaR(candidate->Momentum) < fParameterR && constituent->Momentum.Pt() > fNeutralPTMin)
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348 | {
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349 | fNeutralsInPassingJets->Add(constituent);
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350 | // cout << " Constitutent added Pt Eta Charge " << constituent->Momentum.Pt() << " " << constituent->Momentum.Eta() << " " << constituent->Charge << endl;
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351 | }
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352 | }
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353 | }
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354 | }
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355 | }
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356 | }
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357 |
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358 | //------------------------------------------------------------------------------
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