1 //Created by Christine Nattrass, Rebecca Scott, Irakli Martashvili
2 //University of Tennessee at Knoxville
4 // This class is designed for the analysis of the hadronic component of
5 // transverse energy. It is used by AliAnalysisTaskHadEt.
6 // This gets information about the hadronic component of the transverse energy
7 // from tracks reconstructed in an event
8 // it has daughters, AliAnalysisHadEtMonteCarlo and
9 // AliAnalysisHadEtReconstructed which loop over either Monte Carlo data or
10 // real data to get Et
12 #include "AliAnalysisHadEt.h"
18 #include "AliAnalysisEtCuts.h"
19 #include "AliMCEvent.h"
20 #include "AliVEvent.h"
22 #include "AliESDtrackCuts.h"
23 #include "TDatabasePDG.h"
24 #include "TParticle.h"
27 #include "AliPIDResponse.h"
28 #include "AliTPCPIDResponse.h"
29 #include "AliInputEventHandler.h"
30 #include "AliAnalysisManager.h"
32 #include "AliCentrality.h"
36 ClassImp(AliAnalysisHadEt);
39 Int_t AliAnalysisHadEt::fgnumOfEtaBins = 16;
40 Float_t AliAnalysisHadEt::fgEtaAxis[17]={-0.78, -0.7, -0.58, -0.46, -0.34, -0.22, -0.12, -0.06, -0.0, 0.06, 0.12, 0.22, 0.34, 0.46, 0.58, 0.7, 0.78};
41 Int_t AliAnalysisHadEt::fgNumOfPtBins = 111;
42 Float_t AliAnalysisHadEt::fgPtAxis[117]=
43 {0.0,0.01,0.02,0.03,0.04, 0.05, 0.06,0.07,0.08,0.09, 0.10,0.11, .12,0.13, .14,0.15, .16,0.17, .18,0.19,
44 0.2, .22, .24, .26, .28, 0.30, 0.32, .34, .36, .38, 0.40, .42, .44, .46, .48,
45 0.5, .52, .54, .56, .58, 0.60, 0.62, .64, .66, .68, 0.70, .72, .74, .76, .78,
46 .80, .82, .84, .86, .88, 0.90, 0.92, .94, .96, .98, 1.00,1.05, 1.1,1.15, 1.2,
47 1.25, 1.3,1.35,1.40,1.45, 1.50, 1.55, 1.6,1.65, 1.7, 1.75, 1.8,1.85, 1.9,1.95,
48 2.0, 2.2, 2.4, 2.6, 2.8, 3.00, 3.20, 3.4, 3.6, 3.8, 4.00, 4.2, 4.4, 4.6, 4.8,
49 5.0, 5.5, 6.0, 6.5, 7.0, 7.50, 8.00, 8.5, 9.0, 9.5, 10.0,12.0,14.0,16.0,18.0,
50 20.0,25.0,30.0,35.0,40.0, 45.0, 50.0};
51 Float_t AliAnalysisHadEt::fgResAxis[81] = {-0.150,-0.140,-0.130,-0.120,-0.110,-0.100,-0.090,-0.080,-0.070,-0.060,
52 -0.050,-0.045,-0.040,-0.035,-0.030,-0.025,-0.024,-0.023,-0.022,-0.021,
53 -0.020,-0.019,-0.018,-0.017,-0.016,-0.015,-0.014,-0.013,-0.012,-0.011,
54 -0.010,-0.009,-0.008,-0.007,-0.006,-0.005,-0.004,-0.003,-0.002,-0.001,
55 -0.000,0.001,0.002,0.003,0.004,0.005,0.006,0.007,0.008,0.009,
56 0.010,0.011,0.012,0.013,0.014,0.015,0.016,0.017,0.018,0.019,
57 0.020,0.021,0.022,0.023,0.024,0.025,0.030,0.035,0.040,0.045,
58 0.050,0.060,0.070,0.080,0.090,0.100,0.110,0.120,0.130,0.140,
60 // Float_t AliAnalysisHadEt::fgResAxis[31] = {-0.15,-0.14,-0.13,-0.12,-0.11,-0.1,-0.09,-0.08,-0.07,-0.06,-0.05,-0.04,-0.03,-0.02,-0.01,0.0,0.01,0.02,0.03,0.04,0.05,0.06,0.07,0.08,0.09,0.1,0.11,0.12,0.13,0.14,0.15};
61 Int_t AliAnalysisHadEt::fgNumOfResBins = 80;
64 AliAnalysisHadEt::AliAnalysisHadEt() : AliAnalysisEtCommon()
75 ,fChargedMultiplicity(0)
76 ,fNeutralMultiplicity(0)
79 {//default constructor
83 AliAnalysisHadEt::~AliAnalysisHadEt()
85 delete fEsdtrackCutsITSTPC;
86 delete fEsdtrackCutsITS;
87 delete fEsdtrackCutsTPC;
91 Int_t AliAnalysisHadEt::AnalyseEvent(AliVEvent *event)
92 { //this line is basically here to eliminate a compiler warning that event is not used. Making it a virtual function did not work with the plugin.
93 AliAnalysisEtCommon::AnalyseEvent(event);
99 void AliAnalysisHadEt::Init()
100 {// clear variables, set up cuts and PDG info
101 AliAnalysisEtCommon::Init();
105 void AliAnalysisHadEt::ResetEventValues()
106 {//Resets event values of et to zero
107 AliAnalysisEtCommon::ResetEventValues();
111 fTotNeutralEtAcc = 0;
113 fTotChargedEtAcc = 0;
115 fChargedMultiplicity = 0;
116 fNeutralMultiplicity = 0;
119 void AliAnalysisHadEt::CreateEtaPtHisto2D(TString name, TString title)
120 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
121 TString *histoname = new TString();
122 TString *histotitle = new TString();
124 histoname->Append(name);
125 histotitle->Append(title);
127 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgnumOfEtaBins, fgEtaAxis);
128 histo->SetYTitle("#eta");
129 histo->SetXTitle("p_{T}");
130 histo->SetZTitle("E_{T}");
132 fhistoList->Add(histo);
137 void AliAnalysisHadEt::CreateResolutionPtHisto2D(TString name, TString title, TString xtitle, TString ytitle)
138 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
139 TString *histoname = new TString();
140 TString *histotitle = new TString();
142 histoname->Append(name);
143 histotitle->Append(title);
145 //TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgNumOfResBins, fgResAxis);
146 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgNumOfResBins, fgResAxis);
147 histo->SetYTitle(ytitle);
148 histo->SetXTitle(xtitle);
149 histo->SetZTitle("Number of entries");
151 fhistoList->Add(histo);
156 void AliAnalysisHadEt::CreatePtHisto1D(TString name, TString title, TString xtitle, TString ytitle)
157 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
158 TString *histoname = new TString();
159 TString *histotitle = new TString();
161 histoname->Append(name);
162 histotitle->Append(title);
164 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis);
165 histo->SetYTitle(ytitle);
166 histo->SetXTitle(xtitle);
168 fhistoList->Add(histo);
174 void AliAnalysisHadEt::CreateHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Float_t xlow,Float_t xhigh)
175 { //creates a 1d histogram of the given dimensions and adds it to the list of histograms to be saved
176 TString *histoname = new TString();
177 TString *histotitle = new TString();
178 histoname->Append(name);
179 histotitle->Append(title);
180 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
181 histo->SetYTitle(ytitle);
182 histo->SetXTitle(xtitle);
184 fhistoList->Add(histo);
188 void AliAnalysisHadEt::CreateIntHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Int_t xlow,Int_t xhigh)
189 { //creates a 1d integer histogram and adds it to the list of histograms to be saved
190 TString *histoname = new TString();
191 TString *histotitle = new TString();
192 histoname->Append(name);
193 histotitle->Append(title);
194 TH1I *histo = new TH1I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
195 histo->SetYTitle(ytitle);
196 histo->SetXTitle(xtitle);
198 fhistoList->Add(histo);
203 void AliAnalysisHadEt::CreateHisto2D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Float_t xlow,Float_t xhigh,Int_t ybins,Float_t ylow,Float_t yhigh)
204 { //creates a 2d histogram and adds it to the list of histograms to be saved
205 TString *histoname = new TString();
206 TString *histotitle = new TString();
207 histoname->Append(name);
208 histotitle->Append(title);
209 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
210 histo->SetYTitle(ytitle);
211 histo->SetXTitle(xtitle);
213 fhistoList->Add(histo);
218 void AliAnalysisHadEt::CreateIntHisto2D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Int_t xlow,Int_t xhigh,Int_t ybins,Int_t ylow,Int_t yhigh)
219 { //creates a 2-d integer histogram and adds it to the list of histograms to be saved
220 TString *histoname = new TString();
221 TString *histotitle = new TString();
222 histoname->Append(name);
223 histotitle->Append(title);
224 TH2I *histo = new TH2I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
225 histo->SetYTitle(ytitle);
226 histo->SetXTitle(xtitle);
228 fhistoList->Add(histo);
234 void AliAnalysisHadEt::CreateEtaHisto1D(TString name, TString title)
235 { //creates 1d histogram in eta and adds it to the list of histograms to be saved
236 TString *histoname = new TString();
237 TString *histotitle = new TString();
238 histoname->Append(name);
239 histotitle->Append(title);
240 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),fgnumOfEtaBins, fgEtaAxis);
241 histo->SetYTitle("E_{T}");
242 histo->SetXTitle("#eta");
244 fhistoList->Add(histo);
248 void AliAnalysisHadEt::FillHisto1D(TString histname, Float_t x, Float_t weight)
249 {//fills a 1d histogram with the name histoname with the value x and the weight "weight"
251 TString *name = new TString();
252 name->Append(histname);
253 histo = (TH1F *)fhistoList->FindObject(name->Data());
255 histo->Fill((Double_t)x, weight);
257 else{cerr<<"CorrelationMaker::FillHisto1D: no histogram "<< name->Data()<<endl;}
260 void AliAnalysisHadEt::FillHisto2D(TString histname, Float_t x, Float_t y, Float_t weight)
261 {//fills a 2d histogram with the name histoname with the value x and the weight "weight"
263 TString *name = new TString();
264 name->Append(histname);
265 histo = (TH2F *)fhistoList->FindObject(name->Data());
267 histo->Fill((Double_t)x,(Double_t)y, weight);
269 else{cerr<<"CorrelationMaker::FillHisto2D: no histogram "<< name->Data()<<endl;}
274 Float_t AliAnalysisHadEt::Et(TParticle *part, float mass){//function to calculate et in the same way as it would be calculated in a calorimeter
275 if(mass+1000<0.01){//if no mass given return default. The default argument is -1000
276 if(TMath::Abs(part->GetPDG(0)->PdgCode())==2212 || TMath::Abs(part->GetPDG(0)->PdgCode())==2112){
277 if(part->GetPDG(0)->PdgCode()==-2212 || part->GetPDG(0)->PdgCode()==-2112){//antiproton or antineutron
278 //for antinucleons we specifically want to return the kinetic energy plus twice the rest mass
279 return (part->Energy()+part->GetMass())*TMath::Sin(part->Theta());
281 if(part->GetPDG(0)->PdgCode()==2212 || part->GetPDG(0)->PdgCode()==2112){//proton or neutron
282 //for nucleons we specifically want to return the kinetic energy only
283 return (part->Energy()-part->GetMass())*TMath::Sin(part->Theta());
286 else{//otherwise go to the default
287 return part->Energy()*TMath::Sin(part->Theta());
290 else{//otherwise use the mass that was given
291 return (TMath::Sqrt(TMath::Power(part->P(),2.0)+TMath::Power(mass,2.0)))*TMath::Sin(part->Theta());
295 Float_t AliAnalysisHadEt::Et(Float_t p, Float_t theta, Int_t pid, Short_t charge) const {//function to calculate et in the same way as it would be calculated in a calorimeter
296 if(pid==AliAnalysisEtCommon::fgPiPlusCode || pid==AliAnalysisEtCommon::fgPiMinusCode){//Nothing special for pions
297 return TMath::Sqrt(p*p + fgPionMass*fgPionMass) * TMath::Sin(theta);
299 if(pid==AliAnalysisEtCommon::fgKPlusCode || pid==AliAnalysisEtCommon::fgKMinusCode){//Nothing special for kaons
300 return TMath::Sqrt(p*p + AliAnalysisEtCommon::fgKaonMass*AliAnalysisEtCommon::fgKaonMass) * TMath::Sin(theta);
302 if(pid==AliAnalysisEtCommon::fgEPlusCode || pid==AliAnalysisEtCommon::fgEMinusCode){//Nothing special for electrons
303 return TMath::Sqrt(p*p + AliAnalysisEtCommon::fgElectronMass*AliAnalysisEtCommon::fgElectronMass) * TMath::Sin(theta);
305 if(pid==AliAnalysisEtCommon::fgProtonCode || pid==AliAnalysisEtCommon::fgAntiProtonCode){//But for protons we must be careful...
306 if(charge<0.0){//antiprotns: kinetic energy plus twice the rest mass
307 return (TMath::Sqrt(p*p + AliAnalysisEtCommon::fgProtonMass*AliAnalysisEtCommon::fgProtonMass) + AliAnalysisEtCommon::fgProtonMass) * TMath::Sin(theta);
309 if(charge>0.0){//antiprotns: kinetic energy only
310 return (TMath::Sqrt(p*p + AliAnalysisEtCommon::fgProtonMass*AliAnalysisEtCommon::fgProtonMass) - AliAnalysisEtCommon::fgProtonMass) * TMath::Sin(theta);
313 //cerr<<"Uh-oh! Et not set properly!"<<endl;
317 Float_t AliAnalysisHadEt::TrueP(float pTrec) const {
318 if(pTrec>1.0) return pTrec;
319 return pTrec/(1-599.334*pTrec+7285.15*pTrec*pTrec)+pTrec;
322 Int_t AliAnalysisHadEt::GetCentralityBin(Int_t numberofbins,AliCentrality *centrality){
323 Int_t centralitybin = -1;
324 if(numberofbins<21) centralitybin= centrality->GetCentralityClass10(fCentralityMethod);
326 if(numberofbins<41) centralitybin= centrality->GetCentralityClass5(fCentralityMethod);
328 Float_t centpercent = centrality->GetCentralityPercentile(fCentralityMethod);
329 centralitybin= centrality->GetCentralityClass5(fCentralityMethod);
330 Float_t centralitybinfloat = (centpercent/2.5);
331 if(centralitybin>=0){
332 centralitybin =(Int_t) (centralitybinfloat);
333 //cout<<" centbin "<<centralitybin<<" centrality "<<centpercent<<" "<<centpercent/2.5 <<endl;
337 //cout<<" centrality bin "<<centralitybin<<endl;
338 return centralitybin;