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"
30 ClassImp(AliAnalysisHadEt);
31 //These are from the PDG database but by making them static the code is a bit more efficient and has no problems running with the plugin
32 Float_t AliAnalysisHadEt::fgPionMass = 0.13957;
33 Float_t AliAnalysisHadEt::fgKaonMass = 0.493677;
34 Float_t AliAnalysisHadEt::fgProtonMass = 0.938272;
35 Float_t AliAnalysisHadEt::fgElectronMass = 0.000510999;
36 Int_t AliAnalysisHadEt::fgPiPlusCode = 211;
37 Int_t AliAnalysisHadEt::fgPiMinusCode = -211;
38 Int_t AliAnalysisHadEt::fgKPlusCode = 321;
39 Int_t AliAnalysisHadEt::fgKMinusCode = -321;
40 Int_t AliAnalysisHadEt::fgProtonCode = 2212;
41 Int_t AliAnalysisHadEt::fgAntiProtonCode = -2212;
42 Int_t AliAnalysisHadEt::fgLambdaCode = 3122;
43 Int_t AliAnalysisHadEt::fgAntiLambdaCode = -3122;
44 Int_t AliAnalysisHadEt::fgK0SCode = 310;
45 Int_t AliAnalysisHadEt::fgOmegaCode = 3334;
46 Int_t AliAnalysisHadEt::fgAntiOmegaCode = -3334;
47 Int_t AliAnalysisHadEt::fgXi0Code = 3322;
48 Int_t AliAnalysisHadEt::fgAntiXi0Code = -3322;
49 Int_t AliAnalysisHadEt::fgXiCode = 3312;
50 Int_t AliAnalysisHadEt::fgAntiXiCode = -3312;
51 Int_t AliAnalysisHadEt::fgSigmaCode = 3112;
52 Int_t AliAnalysisHadEt::fgAntiSigmaCode = -3112;
53 Int_t AliAnalysisHadEt::fgK0LCode = 130;
54 Int_t AliAnalysisHadEt::fgNeutronCode = 2112;
55 Int_t AliAnalysisHadEt::fgAntiNeutronCode = -2112;
56 Int_t AliAnalysisHadEt::fgEPlusCode = -11;
57 Int_t AliAnalysisHadEt::fgEMinusCode = 11;
58 Int_t AliAnalysisHadEt::fgGammaCode = 22;
59 Int_t AliAnalysisHadEt::fgPi0Code = 111;
60 Int_t AliAnalysisHadEt::fgEtaCode = 221;
61 Int_t AliAnalysisHadEt::fgOmega0Code = 223;
64 // Int_t AliAnalysisHadEt::fgnumOfEtaBins = 46;
65 // Float_t AliAnalysisHadEt::fgEtaAxis[47]={-0.78, -0.74, -0.7, -0.66, -0.62, -0.58, -0.54, -0.5, -0.46, -0.42, -0.38, -0.34, -0.3, -0.26, -0.22, -0.18, -0.14, -0.12, -0.1, -0.08, -0.06, -0.04, -0.02, -0.0, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12, 0.14, 0.18, 0.22, 0.26, 0.3, 0.34, 0.38, 0.42, 0.46, 0.5, 0.54, 0.58, 0.62, 0.66, 0.7, 0.74, 0.78};
66 //reduction in the number of bins
67 Int_t AliAnalysisHadEt::fgnumOfEtaBins = 16;
68 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};
69 Int_t AliAnalysisHadEt::fgNumOfPtBins = 111;
70 Float_t AliAnalysisHadEt::fgPtAxis[117]=
71 {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,
72 0.2, .22, .24, .26, .28, 0.30, 0.32, .34, .36, .38, 0.40, .42, .44, .46, .48,
73 0.5, .52, .54, .56, .58, 0.60, 0.62, .64, .66, .68, 0.70, .72, .74, .76, .78,
74 .80, .82, .84, .86, .88, 0.90, 0.92, .94, .96, .98, 1.00,1.05, 1.1,1.15, 1.2,
75 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,
76 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,
77 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,
78 20.0,25.0,30.0,35.0,40.0, 45.0, 50.0};
80 Float_t AliAnalysisHadEt::fgPtTPCCutOff = 0.15;
81 Float_t AliAnalysisHadEt::fgPtITSCutOff = 0.10;
83 AliAnalysisHadEt::AliAnalysisHadEt() :
84 fHistogramNameSuffix("")
95 ,fChargedMultiplicity(0)
96 ,fNeutralMultiplicity(0)
97 ,fEsdtrackCutsITSTPC(0)
101 {//default constructor
105 AliAnalysisHadEt::~AliAnalysisHadEt()
108 delete fEsdtrackCutsITSTPC;
109 delete fEsdtrackCutsITS;
110 delete fEsdtrackCutsTPC;
113 Int_t AliAnalysisHadEt::AnalyseEvent(AliVEvent *event)
114 { //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.
115 cout << "This event has " << event->GetNumberOfTracks() << " tracks" << endl;
120 void AliAnalysisHadEt::FillOutputList()
121 {//fill the output histogram list with histograms in all AliAnalysisHadEt's
124 void AliAnalysisHadEt::Init()
125 {// clear variables, set up cuts and PDG info
129 void AliAnalysisHadEt::CreateHistograms()
130 {//creates histograms included in all AliAnalysisHadEt's
133 void AliAnalysisHadEt::FillHistograms()
134 {//Fills histograms filled for all AliAnalysisHadEt's
137 void AliAnalysisHadEt::ResetEventValues()
138 {//Resets event values of et to zero
142 fTotNeutralEtAcc = 0;
144 fTotChargedEtAcc = 0;
146 fChargedMultiplicity = 0;
147 fNeutralMultiplicity = 0;
149 if (!fCuts) { // some Init's needed
150 cout << __FILE__ << ":" << __LINE__ << " : Init " << endl;
152 cout << " setting up Cuts " << endl;
153 fCuts = new AliAnalysisEtCuts();
158 void AliAnalysisHadEt::SetParticleCodes()
159 { //the codes are defined in $ROOTSYS/etc/pdg_table.txt
162 void AliAnalysisHadEt::CreateEtaPtHisto2D(TString name, TString title)
163 { //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
164 TString *histoname = new TString();
165 TString *histotitle = new TString();
167 histoname->Append(name);
168 histotitle->Append(title);
170 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgnumOfEtaBins, fgEtaAxis);
171 histo->SetYTitle("#eta");
172 histo->SetXTitle("p_{T}");
173 histo->SetZTitle("E_{T}");
175 fhistoList->Add(histo);
181 void AliAnalysisHadEt::CreateHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Float_t xlow,Float_t xhigh)
182 { //creates a 1d histogram of the given dimensions and adds it to the list of histograms to be saved
183 TString *histoname = new TString();
184 TString *histotitle = new TString();
185 histoname->Append(name);
186 histotitle->Append(title);
187 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
188 histo->SetYTitle(ytitle);
189 histo->SetXTitle(xtitle);
191 fhistoList->Add(histo);
195 void AliAnalysisHadEt::CreateIntHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Int_t xlow,Int_t xhigh)
196 { //creates a 1d integer histogram and adds it to the list of histograms to be saved
197 TString *histoname = new TString();
198 TString *histotitle = new TString();
199 histoname->Append(name);
200 histotitle->Append(title);
201 TH1I *histo = new TH1I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
202 histo->SetYTitle(ytitle);
203 histo->SetXTitle(xtitle);
205 fhistoList->Add(histo);
210 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)
211 { //creates a 2d histogram and adds it to the list of histograms to be saved
212 TString *histoname = new TString();
213 TString *histotitle = new TString();
214 histoname->Append(name);
215 histotitle->Append(title);
216 TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
217 histo->SetYTitle(ytitle);
218 histo->SetXTitle(xtitle);
220 fhistoList->Add(histo);
225 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)
226 { //creates a 2-d integer histogram and adds it to the list of histograms to be saved
227 TString *histoname = new TString();
228 TString *histotitle = new TString();
229 histoname->Append(name);
230 histotitle->Append(title);
231 TH2I *histo = new TH2I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
232 histo->SetYTitle(ytitle);
233 histo->SetXTitle(xtitle);
235 fhistoList->Add(histo);
241 void AliAnalysisHadEt::CreateEtaHisto1D(TString name, TString title)
242 { //creates 1d histogram in eta and adds it to the list of histograms to be saved
243 TString *histoname = new TString();
244 TString *histotitle = new TString();
245 histoname->Append(name);
246 histotitle->Append(title);
247 TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),fgnumOfEtaBins, fgEtaAxis);
248 histo->SetYTitle("E_{T}");
249 histo->SetXTitle("#eta");
251 fhistoList->Add(histo);
255 void AliAnalysisHadEt::FillHisto1D(TString histname, Float_t x, Float_t weight)
256 {//fills a 1d histogram with the name histoname with the value x and the weight "weight"
258 TString *name = new TString();
259 name->Append(histname);
260 histo = (TH1F *)fhistoList->FindObject(name->Data());
262 histo->Fill((Double_t)x, weight);
264 else{cerr<<"CorrelationMaker::FillHisto1D: no histogram "<< name->Data()<<endl;}
267 void AliAnalysisHadEt::FillHisto2D(TString histname, Float_t x, Float_t y, Float_t weight)
268 {//fills a 2d histogram with the name histoname with the value x and the weight "weight"
270 TString *name = new TString();
271 name->Append(histname);
272 histo = (TH2F *)fhistoList->FindObject(name->Data());
274 histo->Fill((Double_t)x,(Double_t)y, weight);
276 else{cerr<<"CorrelationMaker::FillHisto2D: no histogram "<< name->Data()<<endl;}
281 Float_t AliAnalysisHadEt::Et(TParticle *part, float mass){//function to calculate et in the same way as it would be calculated in a calorimeter
282 if(mass+1000<0.01){//if no mass given return default. The default argument is -1000
283 if(TMath::Abs(part->GetPDG(0)->PdgCode())==2212 || TMath::Abs(part->GetPDG(0)->PdgCode())==2112){
284 if(part->GetPDG(0)->PdgCode()==-2212 || part->GetPDG(0)->PdgCode()==-2112){//antiproton or antineutron
285 //for antinucleons we specifically want to return the kinetic energy plus twice the rest mass
286 return (part->Energy()+part->GetMass())*TMath::Sin(part->Theta());
288 if(part->GetPDG(0)->PdgCode()==2212 || part->GetPDG(0)->PdgCode()==2112){//antiproton or antineutron
289 //for nucleons we specifically want to return the kinetic energy only
290 return (part->Energy()-part->GetMass())*TMath::Sin(part->Theta());
293 else{//otherwise go to the default
294 return part->Energy()*TMath::Sin(part->Theta());
297 else{//otherwise use the mass that was given
298 return (TMath::Sqrt(TMath::Power(part->P(),2.0)+TMath::Power(mass,2.0)))*TMath::Sin(part->Theta());
302 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
303 if(pid==fgPiPlusCode || pid==fgPiMinusCode){//Nothing special for pions
304 return TMath::Sqrt(p*p + fgPionMass*fgPionMass) * TMath::Sin(theta);
306 if(pid==fgKPlusCode || pid==fgKMinusCode){//Nothing special for kaons
307 return TMath::Sqrt(p*p + fgKaonMass*fgKaonMass) * TMath::Sin(theta);
309 if(pid==fgEPlusCode || pid==fgEMinusCode){//Nothing special for electrons
310 return TMath::Sqrt(p*p + fgElectronMass*fgElectronMass) * TMath::Sin(theta);
312 if(pid==fgProtonCode || pid==fgAntiProtonCode){//But for protons we must be careful...
313 if(charge<0.0){//antiprotns: kinetic energy plus twice the rest mass
314 return (TMath::Sqrt(p*p + fgProtonMass*fgProtonMass) + fgProtonMass) * TMath::Sin(theta);
316 if(charge>0.0){//antiprotns: kinetic energy only
317 return (TMath::Sqrt(p*p + fgProtonMass*fgProtonMass) - fgProtonMass) * TMath::Sin(theta);
320 cerr<<"Uh-oh! Et not set properly!"<<endl;