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source: git/modules/Efficiency.cc@ fd4b326

Last change on this file since fd4b326 was e79c954, checked in by Michele Selvaggi <michele.selvaggi@…>, 4 years ago

added UseMomentumVector flag

  • Property mode set to 100644
File size: 3.4 KB
Line 
1/*
2 * Delphes: a framework for fast simulation of a generic collider experiment
3 * Copyright (C) 2012-2014 Universite catholique de Louvain (UCL), Belgium
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19/** \class Efficiency
20 *
21 * Selects candidates from the InputArray according to the efficiency formula.
22 *
23 * \author P. Demin - UCL, Louvain-la-Neuve
24 *
25 */
26
27#include "modules/Efficiency.h"
28
29#include "classes/DelphesClasses.h"
30#include "classes/DelphesFactory.h"
31#include "classes/DelphesFormula.h"
32
33#include "ExRootAnalysis/ExRootClassifier.h"
34#include "ExRootAnalysis/ExRootFilter.h"
35#include "ExRootAnalysis/ExRootResult.h"
36
37#include "TDatabasePDG.h"
38#include "TFormula.h"
39#include "TLorentzVector.h"
40#include "TMath.h"
41#include "TObjArray.h"
42#include "TRandom3.h"
43#include "TString.h"
44
45#include <algorithm>
46#include <iostream>
47#include <sstream>
48#include <stdexcept>
49
50using namespace std;
51
52//------------------------------------------------------------------------------
53
54Efficiency::Efficiency() :
55 fFormula(0), fItInputArray(0)
56{
57 fFormula = new DelphesFormula;
58}
59
60//------------------------------------------------------------------------------
61
62Efficiency::~Efficiency()
63{
64 if(fFormula) delete fFormula;
65}
66
67//------------------------------------------------------------------------------
68
69void Efficiency::Init()
70{
71 // read efficiency formula
72
73 fFormula->Compile(GetString("EfficiencyFormula", "1.0"));
74
75 // import input array
76
77 fInputArray = ImportArray(GetString("InputArray", "ParticlePropagator/stableParticles"));
78 fItInputArray = fInputArray->MakeIterator();
79
80 // switch to compute efficiency based on momentum vector eta, phi
81 fUseMomentumVector = GetBool("UseMomentumVector", false);
82
83 // create output array
84
85 fOutputArray = ExportArray(GetString("OutputArray", "stableParticles"));
86}
87
88//------------------------------------------------------------------------------
89
90void Efficiency::Finish()
91{
92 if(fItInputArray) delete fItInputArray;
93}
94
95//------------------------------------------------------------------------------
96
97void Efficiency::Process()
98{
99 Candidate *candidate;
100 Double_t pt, eta, phi, e;
101
102 fItInputArray->Reset();
103 while((candidate = static_cast<Candidate *>(fItInputArray->Next())))
104 {
105 const TLorentzVector &candidatePosition = candidate->Position;
106 const TLorentzVector &candidateMomentum = candidate->Momentum;
107 eta = candidatePosition.Eta();
108 phi = candidatePosition.Phi();
109
110 if (fUseMomentumVector){
111 eta = candidateMomentum.Eta();
112 phi = candidateMomentum.Phi();
113 }
114
115 pt = candidateMomentum.Pt();
116 e = candidateMomentum.E();
117
118 // apply an efficency formula
119 if(gRandom->Uniform() > fFormula->Eval(pt, eta, phi, e, candidate)) continue;
120
121 fOutputArray->Add(candidate);
122 }
123}
124
125//------------------------------------------------------------------------------
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