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Coverity fixes (Fiorella, Giuseppe, Ivana)
[u/mrichter/AliRoot.git] / PWG3 / base / AliQuarkoniaEfficiency.cxx
CommitLineData
27de2dfb 1
2/* $Id$ */
3
bae80eaf 4//===================================================================
5// Class AliQuarkoniaEfficiency
6//
7// This class will provide the quarkonia reconstruction efficiency
8// in ALICE without acceptance consideration.
9//
10//
11// Reconstruction efficiency has been evaluated by means of a flat
12// y and pt distribution of quarkonia in -4 < y < -2.5,
13// 0 < pt < 20 GeV/c. Weights have been used to evaluate the
14// reconstruction efficiency in different parameterizations.
15//
16// Beware that efficiency histos are preliminary.
17// Just Jpsi, Dimuon, UnlikePair trigger
18// efficiencies should be considered.
19//
20//
21// Example:
22// Double_t eff,error;
23// AliQuarkoniaEfficiency * JPsiEff = new AliQuarkoniaEfficiency();
24// JPsiEff->Init();
25// JPsiEff->GetEfficiency(Rapidity,Pt,eff,error);
26// printf(" eff = %2.2e error %2.2e \n",eff,error);
27//
28//
29// Subatech 2006
30//===================================================================
977e08ed 31
32// Root
977e08ed 33#include "TFile.h"
34#include "TH2.h"
977e08ed 35
36// AliRoot includes
37#include "AliQuarkoniaEfficiency.h"
38#include "AliLog.h"
39
40
bae80eaf 41//_______________________________________________________________________
977e08ed 42AliQuarkoniaEfficiency::AliQuarkoniaEfficiency(Int_t quarkoniaResonance, Int_t decayChannel,
43 Int_t simParameterization):
44 fEfficiencyFileName("QuarkoniaEfficiency.root"),
45 fQuarkoniaResonance(quarkoniaResonance),
46 fDecayChannel(decayChannel),
47 fParameterization(simParameterization),
48 fTriggerType(kPairUnlikeApt),
49 fTrigger(kFALSE),
50 fEfficiency(0x0)
51{
bae80eaf 52 // Constructor
977e08ed 53}
54
bae80eaf 55//_______________________________________________________________________
977e08ed 56AliQuarkoniaEfficiency::~AliQuarkoniaEfficiency()
57{
bae80eaf 58 // Destructor
977e08ed 59 delete fEfficiency;
60}
61
bae80eaf 62//_______________________________________________________________________
977e08ed 63void AliQuarkoniaEfficiency::Init()
64{
bae80eaf 65 // Initialize method
977e08ed 66 switch (fQuarkoniaResonance) {
67 case kJpsi:
68 SetTitle("Jpsi");
69 break;
70 case kPsiP:
71 SetTitle("PsiP");
72 break;
73 case kUpsilon:
74 SetTitle("Upsilon");
75 break;
76 case kUpsilonP:
77 SetTitle("UpsilonP");
78 break;
79 case kUpsilonPP:
80 SetTitle("UpsilonPP");
81 break;
82 case kOmega:
83 SetTitle("Omega");
84 break;
85 case kPhi:
86 SetTitle("Phi");
87 break;
88 }
89
90 switch (fDecayChannel) {
91 case kDimuon:
92 SetName("Dimuon");
93 break;
94 case kDielectron:
95 SetName("Dielectron");
96 break;
97 }
98
a6e0ebfe 99 const char *param=0;
977e08ed 100 switch (fParameterization){
101 case kFlat:
102 param = "Flat";
103 break;
104 case kCDFscaled:
105 param = "CDFscaled";
106 break;
107 case kCDFscaledPP:
108 param = "CDFscaledPP";
109 break;
110 }
111
a6e0ebfe 112 const char *trig=0;
977e08ed 113 switch (fTriggerType){
114 case kSinglePlusLpt:
115 trig = "SinglePlusLpt";
116 break;
117 case kSinglePlusHpt:
118 trig = "SinglePlusHpt";
119 break;
120 case kSinglePlusApt:
121 trig = "SinglePlusApt";
122 break;
123 case kSingleMinusLpt:
124 trig = "SingleMinusLpt";
125 break;
126 case kSingleMinusHpt:
127 trig = "SingleMinusHpt";
128 break;
129 case kSingleMinusApt:
130 trig = "SingleMinusApt";
131 break;
132 case kSingleUndefLpt:
133 trig = "SingleUndefLpt";
134 break;
135 case kSingleUndefHpt:
136 trig = "SingleUndefHpt";
137 break;
138 case kSingleUndefApt:
139 trig = "SingleUndefApt";
140 break;
141 case kPairUnlikeLpt:
142 trig = "PairUnlikeLpt";
143 break;
144 case kPairUnlikeHpt:
145 trig = "PairUnlikeHpt";
146 break;
147 case kPairUnlikeApt:
148 trig = "PairUnlikeApt";
149 break;
150 case kPairLikeLpt:
151 trig = "PairLikeLpt";
152 break;
153 case kPairLikeHpt:
154 trig = "PairLikeHpt";
155 break;
156 case kPairLikeApt:
157 trig = "PairLikeApt";
158 break;
159 }
160
161
162 if(!fEfficiency) delete fEfficiency;
163
164 TFile efficiencyFile(fEfficiencyFileName);
165 if ( efficiencyFile.IsOpen() ) {
166
167 char quarkoniaDir[15];
7bd97ad1 168 snprintf(quarkoniaDir,15,"%s",GetTitle());
977e08ed 169 if (! efficiencyFile.cd(quarkoniaDir) ){
170 AliError(Form("Directory %s not found in file %s \n Efficiency data for quarkonia %s and channel %s not found ",
171 quarkoniaDir,fEfficiencyFileName.Data(),GetTitle(),GetName() ));
172 return;
173 }
174
175 char histosDir[30];
7bd97ad1 176 snprintf(histosDir,30,"%s/%s_%s_%s",quarkoniaDir,GetTitle(),GetName(),param);
977e08ed 177 if(! efficiencyFile.cd(histosDir) ){
178 AliError(Form("Subdirectory %s/%s not found in file %s \n Efficiency data for quarkonia %s and channel %s not found ",
179 quarkoniaDir,histosDir,fEfficiencyFileName.Data(),GetTitle(),GetName() ));
180 return;
181 }
182
183 char histoname[50];
184 if(fTrigger) sprintf(histoname,"h%sEfficiencyPtRap_%s",GetTitle(),trig);
185 else sprintf(histoname,"h%sEfficiencyPtRap",GetTitle());
186 char histonameposition[99];
187 sprintf(histonameposition,"%s/%s",histosDir,histoname);
188 fEfficiency = (TH2F*)efficiencyFile.Get(histonameposition);
189
190 if ( !fEfficiency ) {
191 AliError(Form("Histo %s not found in file %s \n Efficiency data for quarkonia %s and channel %s not found",
dfbceb5b 192 histoname, fEfficiencyFileName.Data(), GetTitle(), GetName() ));
977e08ed 193 }
194 else {
195 fEfficiency->SetDirectory(0);
196 }
197 efficiencyFile.Close();
198
199 }
200 else {
201 AliError(Form("File %s not found",fEfficiencyFileName.Data()));
202 }
203
204}
205
bae80eaf 206//_______________________________________________________________________
977e08ed 207TH2F* AliQuarkoniaEfficiency::GetEfficiencyHisto() const
208{
bae80eaf 209 // Returns the efficiency histogram
977e08ed 210 if (fEfficiency) return fEfficiency;
211 else {
212 AliError(Form("Efficiency data for quarkonia %s and channel %s not found",GetTitle(),GetName()));
213 return 0x0;
214 }
215}
216
bae80eaf 217//_______________________________________________________________________
977e08ed 218void AliQuarkoniaEfficiency::GetEfficiency(Float_t rap, Float_t pT, Double_t &eff, Double_t &error)
219{
bae80eaf 220 // Evaluates the efficiency for a given (y,Pt) of the quarkonia
977e08ed 221 Int_t binx=0;
222 Int_t biny=0;
223
224 if (!fEfficiency) {
225 AliError(Form("Efficiency data for quarkonia %s and channel %s not found",GetTitle(),GetName()));
226 }
227 else {
228 if ( rap < (fEfficiency->GetXaxis())->GetXmin() ||
229 rap > (fEfficiency->GetXaxis())->GetXmax() ||
230 pT < (fEfficiency->GetYaxis())->GetXmin() ||
231 pT > (fEfficiency->GetYaxis())->GetXmax() ) {
232 AliInfo("Values out of range");
233 eff = 0.;
234 error = 0.;
235 }
236 else {
237 binx = fEfficiency->GetXaxis()->FindBin(rap);
238 biny = fEfficiency->GetYaxis()->FindBin(pT);
239 eff = fEfficiency->GetBinContent(binx,biny);
240 error = fEfficiency->GetBinError(binx,biny);
241 }
242 }
243}