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"
35 ClassImp(AliAnalysisHadEt);
38 Int_t AliAnalysisHadEt::fgnumOfEtaBins = 16;
39 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};
40 Int_t AliAnalysisHadEt::fgNumOfPtBins = 111;
41 Float_t AliAnalysisHadEt::fgPtAxis[117]=
42 {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,
43 0.2, .22, .24, .26, .28, 0.30, 0.32, .34, .36, .38, 0.40, .42, .44, .46, .48,
44 0.5, .52, .54, .56, .58, 0.60, 0.62, .64, .66, .68, 0.70, .72, .74, .76, .78,
45 .80, .82, .84, .86, .88, 0.90, 0.92, .94, .96, .98, 1.00,1.05, 1.1,1.15, 1.2,
46 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,
47 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,
48 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,
49 20.0,25.0,30.0,35.0,40.0, 45.0, 50.0};
50 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,
51 -0.050,-0.045,-0.040,-0.035,-0.030,-0.025,-0.024,-0.023,-0.022,-0.021,
52 -0.020,-0.019,-0.018,-0.017,-0.016,-0.015,-0.014,-0.013,-0.012,-0.011,
53 -0.010,-0.009,-0.008,-0.007,-0.006,-0.005,-0.004,-0.003,-0.002,-0.001,
54 -0.000,0.001,0.002,0.003,0.004,0.005,0.006,0.007,0.008,0.009,
55 0.010,0.011,0.012,0.013,0.014,0.015,0.016,0.017,0.018,0.019,
56 0.020,0.021,0.022,0.023,0.024,0.025,0.030,0.035,0.040,0.045,
57 0.050,0.060,0.070,0.080,0.090,0.100,0.110,0.120,0.130,0.140,
59 // 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};
60 Int_t AliAnalysisHadEt::fgNumOfResBins = 80;
63 AliAnalysisHadEt::AliAnalysisHadEt() : AliAnalysisEtCommon()
74 ,fChargedMultiplicity(0)
75 ,fNeutralMultiplicity(0)
78 {//default constructor
82 AliAnalysisHadEt::~AliAnalysisHadEt()
84 delete fEsdtrackCutsITSTPC;
85 delete fEsdtrackCutsITS;
86 delete fEsdtrackCutsTPC;
90 Int_t AliAnalysisHadEt::AnalyseEvent(AliVEvent *event)
91 { //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.
92 AliAnalysisEtCommon::AnalyseEvent(event);
98 void AliAnalysisHadEt::Init()
99 {// clear variables, set up cuts and PDG info
100 AliAnalysisEtCommon::Init();
104 void AliAnalysisHadEt::ResetEventValues()
105 {//Resets event values of et to zero
106 AliAnalysisEtCommon::ResetEventValues();
110 fTotNeutralEtAcc = 0;
112 fTotChargedEtAcc = 0;
114 fChargedMultiplicity = 0;
115 fNeutralMultiplicity = 0;
118 void AliAnalysisHadEt::CreateEtaPtHisto2D(TString name, TString title)
119 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
120 TString *histoname = new TString();
121 TString *histotitle = new TString();
123 histoname->Append(name);
124 histotitle->Append(title);
126 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgnumOfEtaBins, fgEtaAxis);
127 histo->SetYTitle("#eta");
128 histo->SetXTitle("p_{T}");
129 histo->SetZTitle("E_{T}");
131 fhistoList->Add(histo);
136 void AliAnalysisHadEt::CreateResolutionPtHisto2D(TString name, TString title, TString xtitle, TString ytitle)
137 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
138 TString *histoname = new TString();
139 TString *histotitle = new TString();
141 histoname->Append(name);
142 histotitle->Append(title);
144 //TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgNumOfResBins, fgResAxis);
145 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgNumOfResBins, fgResAxis);
146 histo->SetYTitle(ytitle);
147 histo->SetXTitle(xtitle);
148 histo->SetZTitle("Number of entries");
150 fhistoList->Add(histo);
155 void AliAnalysisHadEt::CreatePtHisto1D(TString name, TString title, TString xtitle, TString ytitle)
156 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
157 TString *histoname = new TString();
158 TString *histotitle = new TString();
160 histoname->Append(name);
161 histotitle->Append(title);
163 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis);
164 histo->SetYTitle(ytitle);
165 histo->SetXTitle(xtitle);
167 fhistoList->Add(histo);
173 void AliAnalysisHadEt::CreateHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Float_t xlow,Float_t xhigh)
174 { //creates a 1d histogram of the given dimensions and adds it to the list of histograms to be saved
175 TString *histoname = new TString();
176 TString *histotitle = new TString();
177 histoname->Append(name);
178 histotitle->Append(title);
179 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
180 histo->SetYTitle(ytitle);
181 histo->SetXTitle(xtitle);
183 fhistoList->Add(histo);
187 void AliAnalysisHadEt::CreateIntHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Int_t xlow,Int_t xhigh)
188 { //creates a 1d integer histogram and adds it to the list of histograms to be saved
189 TString *histoname = new TString();
190 TString *histotitle = new TString();
191 histoname->Append(name);
192 histotitle->Append(title);
193 TH1I *histo = new TH1I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
194 histo->SetYTitle(ytitle);
195 histo->SetXTitle(xtitle);
197 fhistoList->Add(histo);
202 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)
203 { //creates a 2d histogram and adds it to the list of histograms to be saved
204 TString *histoname = new TString();
205 TString *histotitle = new TString();
206 histoname->Append(name);
207 histotitle->Append(title);
208 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
209 histo->SetYTitle(ytitle);
210 histo->SetXTitle(xtitle);
212 fhistoList->Add(histo);
217 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)
218 { //creates a 2-d integer histogram and adds it to the list of histograms to be saved
219 TString *histoname = new TString();
220 TString *histotitle = new TString();
221 histoname->Append(name);
222 histotitle->Append(title);
223 TH2I *histo = new TH2I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
224 histo->SetYTitle(ytitle);
225 histo->SetXTitle(xtitle);
227 fhistoList->Add(histo);
233 void AliAnalysisHadEt::CreateEtaHisto1D(TString name, TString title)
234 { //creates 1d histogram in eta and adds it to the list of histograms to be saved
235 TString *histoname = new TString();
236 TString *histotitle = new TString();
237 histoname->Append(name);
238 histotitle->Append(title);
239 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),fgnumOfEtaBins, fgEtaAxis);
240 histo->SetYTitle("E_{T}");
241 histo->SetXTitle("#eta");
243 fhistoList->Add(histo);
247 void AliAnalysisHadEt::FillHisto1D(TString histname, Float_t x, Float_t weight)
248 {//fills a 1d histogram with the name histoname with the value x and the weight "weight"
250 TString *name = new TString();
251 name->Append(histname);
252 histo = (TH1F *)fhistoList->FindObject(name->Data());
254 histo->Fill((Double_t)x, weight);
256 else{cerr<<"CorrelationMaker::FillHisto1D: no histogram "<< name->Data()<<endl;}
259 void AliAnalysisHadEt::FillHisto2D(TString histname, Float_t x, Float_t y, Float_t weight)
260 {//fills a 2d histogram with the name histoname with the value x and the weight "weight"
262 TString *name = new TString();
263 name->Append(histname);
264 histo = (TH2F *)fhistoList->FindObject(name->Data());
266 histo->Fill((Double_t)x,(Double_t)y, weight);
268 else{cerr<<"CorrelationMaker::FillHisto2D: no histogram "<< name->Data()<<endl;}
273 Float_t AliAnalysisHadEt::Et(TParticle *part, float mass){//function to calculate et in the same way as it would be calculated in a calorimeter
274 if(mass+1000<0.01){//if no mass given return default. The default argument is -1000
275 if(TMath::Abs(part->GetPDG(0)->PdgCode())==2212 || TMath::Abs(part->GetPDG(0)->PdgCode())==2112){
276 if(part->GetPDG(0)->PdgCode()==-2212 || part->GetPDG(0)->PdgCode()==-2112){//antiproton or antineutron
277 //for antinucleons we specifically want to return the kinetic energy plus twice the rest mass
278 return (part->Energy()+part->GetMass())*TMath::Sin(part->Theta());
280 if(part->GetPDG(0)->PdgCode()==2212 || part->GetPDG(0)->PdgCode()==2112){//proton or neutron
281 //for nucleons we specifically want to return the kinetic energy only
282 return (part->Energy()-part->GetMass())*TMath::Sin(part->Theta());
285 else{//otherwise go to the default
286 return part->Energy()*TMath::Sin(part->Theta());
289 else{//otherwise use the mass that was given
290 return (TMath::Sqrt(TMath::Power(part->P(),2.0)+TMath::Power(mass,2.0)))*TMath::Sin(part->Theta());
294 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
295 if(pid==AliAnalysisEtCommon::fgPiPlusCode || pid==AliAnalysisEtCommon::fgPiMinusCode){//Nothing special for pions
296 return TMath::Sqrt(p*p + fgPionMass*fgPionMass) * TMath::Sin(theta);
298 if(pid==AliAnalysisEtCommon::fgKPlusCode || pid==AliAnalysisEtCommon::fgKMinusCode){//Nothing special for kaons
299 return TMath::Sqrt(p*p + AliAnalysisEtCommon::fgKaonMass*AliAnalysisEtCommon::fgKaonMass) * TMath::Sin(theta);
301 if(pid==AliAnalysisEtCommon::fgEPlusCode || pid==AliAnalysisEtCommon::fgEMinusCode){//Nothing special for electrons
302 return TMath::Sqrt(p*p + AliAnalysisEtCommon::fgElectronMass*AliAnalysisEtCommon::fgElectronMass) * TMath::Sin(theta);
304 if(pid==AliAnalysisEtCommon::fgProtonCode || pid==AliAnalysisEtCommon::fgAntiProtonCode){//But for protons we must be careful...
305 if(charge<0.0){//antiprotns: kinetic energy plus twice the rest mass
306 return (TMath::Sqrt(p*p + AliAnalysisEtCommon::fgProtonMass*AliAnalysisEtCommon::fgProtonMass) + AliAnalysisEtCommon::fgProtonMass) * TMath::Sin(theta);
308 if(charge>0.0){//antiprotns: kinetic energy only
309 return (TMath::Sqrt(p*p + AliAnalysisEtCommon::fgProtonMass*AliAnalysisEtCommon::fgProtonMass) - AliAnalysisEtCommon::fgProtonMass) * TMath::Sin(theta);
312 //cerr<<"Uh-oh! Et not set properly!"<<endl;
316 Float_t AliAnalysisHadEt::TrueP(float pTrec) const {
317 if(pTrec>1.0) return pTrec;
318 return pTrec/(1-599.334*pTrec+7285.15*pTrec*pTrec)+pTrec;