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d731501a | 1 | // $Id$ |
2 | ||
3 | //************************************************************************** | |
4 | //* This file is property of and copyright by the ALICE Project * | |
5 | //* ALICE Experiment at CERN, All rights reserved. * | |
6 | //* * | |
7 | //* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> * | |
8 | //* Hege Erdal <hege.erdal@gmail.com> * | |
9 | //* * | |
10 | //* Permission to use, copy, modify and distribute this software and its * | |
11 | //* documentation strictly for non-commercial purposes is hereby granted * | |
12 | //* without fee, provided that the above copyright notice appears in all * | |
13 | //* copies and that both the copyright notice and this permission notice * | |
14 | //* appear in the supporting documentation. The authors make no claims * | |
15 | //* about the suitability of this software for any purpose. It is * | |
16 | //* provided "as is" without express or implied warranty. * | |
17 | //************************************************************************** | |
18 | ||
19 | /// @file AliDxHFEParticleSelectionMCEl.cxx | |
20 | /// @author Hege Erdal, Matthias Richter | |
21 | /// @date 2012-07-19 | |
22 | /// @brief MC El selection for D0-HFE correlation | |
23 | /// | |
24 | ||
25 | #include "AliDxHFEParticleSelectionMCEl.h" | |
26 | #include "AliVParticle.h" | |
27 | #include "AliLog.h" | |
28 | #include "THnSparse.h" | |
29 | #include "AliAODMCParticle.h" | |
30 | #include "TH1F.h" | |
31 | #include "TAxis.h" | |
32 | #include "AliAODTrack.h" | |
33 | #include <iostream> | |
34 | #include <cerrno> | |
35 | #include <memory> | |
36 | ||
37 | using namespace std; | |
38 | using std::vector; | |
39 | ||
40 | ||
41 | /// ROOT macro for the implementation of ROOT specific class methods | |
42 | ClassImp(AliDxHFEParticleSelectionMCEl) | |
43 | ||
44 | AliDxHFEParticleSelectionMCEl::AliDxHFEParticleSelectionMCEl(const char* opt) | |
45 | : AliDxHFEParticleSelectionEl(opt) | |
46 | , fMCTools() | |
47 | , fElectronProperties(NULL) | |
48 | , fWhichCut(NULL) | |
49 | , fOriginMother(0) | |
50 | , fResultMC(0) | |
51 | { | |
52 | // constructor | |
53 | // | |
54 | // | |
55 | // | |
56 | // | |
57 | ||
58 | fMCTools.~AliDxHFEToolsMC(); | |
59 | ||
60 | // TODO: argument scan, build tool options accordingly | |
61 | // e.g. set mc mode first/last, skip control histograms | |
62 | TString toolopt("pdg=11 mc-last"); | |
63 | new (&fMCTools) AliDxHFEToolsMC(toolopt); | |
64 | } | |
65 | ||
66 | //at the moment not used, keep for now (to be used when plotting) | |
67 | const char* AliDxHFEParticleSelectionMCEl::fgkPDGMotherBinLabels[]={ | |
68 | "d", | |
69 | "u", | |
70 | "s", | |
71 | "c", | |
72 | "b", | |
73 | "gluon", | |
74 | "gamma", | |
75 | "#pi^{0}", | |
76 | "#eta", | |
77 | "proton", | |
78 | "others" | |
79 | }; | |
80 | ||
d731501a | 81 | AliDxHFEParticleSelectionMCEl::~AliDxHFEParticleSelectionMCEl() |
82 | { | |
83 | // destructor | |
84 | } | |
85 | ||
dcf83226 | 86 | THnSparse* AliDxHFEParticleSelectionMCEl::DefineTHnSparse() |
d731501a | 87 | { |
88 | // | |
89 | // Defines the THnSparse. | |
90 | ||
91 | const int thnSize = 6; | |
dcf83226 | 92 | InitTHnSparseArray(thnSize); |
d731501a | 93 | const double Pi=TMath::Pi(); |
94 | TString name; | |
95 | name.Form("%s info", GetName()); | |
96 | ||
97 | // 0 1 2 3 4 5 | |
98 | // Pt Phi Eta 'stat e' mother "pdg e" | |
99 | int thnBins[thnSize] = { 1000, 200, 500, 2, 14, 10 }; | |
100 | double thnMin [thnSize] = { 0, 0, -1., -0.5, -1.5, -0.5 }; | |
101 | double thnMax [thnSize] = { 100, 2*Pi, 1., 1.5, 12.5, 9.5 }; | |
dcf83226 | 102 | const char* thnNames[thnSize]={ |
103 | "Pt", | |
104 | "Phi", | |
105 | "Eta", | |
106 | "MC statistics electron", | |
107 | "Mother", | |
108 | "PDG of selected electron" | |
109 | }; | |
d731501a | 110 | |
dcf83226 | 111 | return CreateControlTHnSparse(name,thnSize,thnBins,thnMin,thnMax,thnNames); |
d731501a | 112 | } |
113 | ||
dcf83226 | 114 | int AliDxHFEParticleSelectionMCEl::FillParticleProperties(AliVParticle* p, Double_t* data, int dimension) const |
d731501a | 115 | { |
116 | // fill the data array from the particle data | |
117 | if (!data) return -EINVAL; | |
118 | AliAODTrack *track=(AliAODTrack*)p; | |
119 | if (!track) return -ENODATA; | |
120 | int i=0; | |
dcf83226 | 121 | if (dimension!=GetDimTHnSparse()) { |
d731501a | 122 | // TODO: think about filling only the available data and throwing a warning |
123 | return -ENOSPC; | |
124 | } | |
125 | data[i++]=track->Pt(); | |
126 | data[i++]=track->Phi(); | |
127 | data[i++]=track->Eta(); | |
128 | data[i++]=fResultMC; // stat electron (MC electron or not) | |
129 | data[i++]=fOriginMother; // at the moment not included background. Should expand | |
130 | data[i++]=1; // PDG e - not sure if needed, maybe only needed as separate histo? | |
131 | ||
132 | return i; | |
133 | } | |
134 | ||
135 | int AliDxHFEParticleSelectionMCEl::IsSelected(AliVParticle* p, const AliVEvent* pEvent) | |
136 | { | |
137 | /// overloaded from AliDxHFEParticleSelection: check particle | |
138 | /// H: Have changed function. Now doing particle selection first, then run MC over | |
139 | /// selected tracks. Could configure it to be configurable, but not sure if it | |
140 | /// is needed. | |
141 | /// Result from normal track selection is returned, result from MC is stored in | |
142 | /// THnSparse. | |
143 | ||
144 | int iResult=0; | |
145 | if (!p || !pEvent){ | |
146 | return -EINVAL; | |
147 | } | |
148 | // step 1: | |
149 | // optional MC selection before the particle selection | |
150 | if (fMCTools.MCFirst() && (iResult=CheckMC(p, pEvent))==0) { | |
151 | // histograming? | |
152 | return iResult; | |
153 | } | |
154 | ||
155 | // step 2 or 1, depending on sequence: | |
156 | // normal particle selection | |
157 | iResult=AliDxHFEParticleSelectionEl::IsSelected(p, pEvent); | |
158 | if (fMCTools.MCFirst() || iResult==0) return iResult; | |
159 | ||
160 | // step 2, only executed if MC check is last | |
161 | // optional MC selection after the particle selection | |
dcf83226 | 162 | // result stored to be filled into THnSparse |
163 | // TODO: strictly speaken the particles should be rejected | |
164 | // if not mc selected, however skip this for the moment, because of | |
165 | // the logic outside | |
166 | fResultMC=CheckMC(p, pEvent); | |
167 | ||
d731501a | 168 | return iResult; |
169 | } | |
170 | ||
171 | int AliDxHFEParticleSelectionMCEl::CheckMC(AliVParticle* p, const AliVEvent* pEvent) | |
172 | { | |
173 | /// check if MC criteria are fulfilled | |
174 | if (!p || !pEvent){ | |
175 | return -EINVAL; | |
176 | } | |
177 | fOriginMother=-1; | |
178 | int iResult=0; | |
179 | ||
180 | if (!fMCTools.IsInitialized() && (iResult=fMCTools.InitMCParticles(pEvent))<0) { | |
181 | // TODO: message? but has to be filtered in order to avoid message flood | |
182 | return 0; // no meaningful filtering on mc possible | |
183 | } | |
184 | ||
185 | if (fMCTools.RejectByPDG(p,false)) { | |
186 | // rejected by pdg | |
187 | // would also like to use this info? or not meaningful? | |
188 | // NEED TO CHANGE THIS! | |
189 | return 0; | |
190 | } | |
191 | ||
192 | int pdgMother=0; | |
193 | pdgMother=fMCTools.FindMotherPDG(p,AliDxHFEToolsMC::kGetFirstMother); | |
194 | ||
195 | // Particles considered HFE background. can be expanded | |
196 | // Should be created only once | |
197 | // TODO: that needs to be configured once to avoid performance penalty | |
198 | vector<int> motherPDGs; | |
199 | motherPDGs.push_back(AliDxHFEToolsMC::kPDGpi0); | |
200 | motherPDGs.push_back(AliDxHFEToolsMC::kPDGeta); | |
201 | motherPDGs.push_back(AliDxHFEToolsMC::kPDGgamma); | |
202 | motherPDGs.push_back(AliDxHFEToolsMC::kPDGJpsi); | |
203 | ||
204 | if(fMCTools.RejectByPDG(pdgMother,motherPDGs)){ | |
205 | pdgMother=fMCTools.FindMotherPDG(p,AliDxHFEToolsMC::kGetOriginMother); | |
206 | fOriginMother=fMCTools.GetOriginMother(); | |
207 | } | |
208 | else{ | |
209 | //Could this be done in a more elegant way? | |
210 | switch(pdgMother){ | |
211 | case(AliDxHFEToolsMC::kPDGpi0): fOriginMother=AliDxHFEToolsMC::kNrOrginMother; break; | |
212 | case(AliDxHFEToolsMC::kPDGeta): fOriginMother=AliDxHFEToolsMC::kNrOrginMother+1; break; | |
213 | case(AliDxHFEToolsMC::kPDGgamma): fOriginMother=AliDxHFEToolsMC::kNrOrginMother+2;break; | |
214 | case(AliDxHFEToolsMC::kPDGJpsi): fOriginMother=AliDxHFEToolsMC::kNrOrginMother+3;break; | |
215 | } | |
216 | } | |
217 | ||
218 | /*if (fMCTools.RejectByMotherPDG(p)) { | |
219 | // rejected by pdg of original mother | |
220 | // H: want pdg of origin process to be stored in THnSparse | |
221 | // Not sure if this is needed... Need to check, using AliDxHFEToolsMC, who | |
222 | // first mother are, and also what origin is. Use this info here. | |
223 | return 0; | |
224 | }*/ | |
225 | ||
226 | return 1; | |
227 | } | |
228 | ||
229 | void AliDxHFEParticleSelectionMCEl::Clear(const char* option) | |
230 | { | |
231 | /// clear internal memory | |
232 | fMCTools.Clear(option); | |
233 | } |