Correcting coding violations in HadEt classes, adding container class for hadronic...
[u/mrichter/AliRoot.git] / PWG4 / totEt / AliAnalysisHadEt.cxx
1 //Create by Christine Nattrass, Rebecca Scott, Irakli Martashvili
2 //University of Tennessee at Knoxville
3 //This class is designed for the analysis of the hadronic component of transverse energy.  It is used by AliAnalysisTaskHadEt.
4 //This gets information about the hadronic component of the transverse energy from tracks reconstructed in an event
5 //it has daughters, AliAnalysisHadEtMonteCarlo and AliAnalysisHadEtReconstructed, which loop over either Monte Carlo data or real data to get Et
6 #include "AliAnalysisHadEt.h"
7 #include "TMath.h"
8 #include "TList.h"
9 #include "TH1F.h"
10 #include "TH2F.h"
11 #include <iostream>
12 #include "AliAnalysisEtCuts.h"
13 #include "AliMCEvent.h"
14 #include "AliVEvent.h"
15 #include "AliStack.h"
16 #include "AliESDtrackCuts.h"
17 #include "TDatabasePDG.h"
18 #include "TParticle.h"
19 #include "Rtypes.h"
20
21 using namespace std;
22
23 ClassImp(AliAnalysisHadEt);
24
25
26 Int_t AliAnalysisHadEt::fgnumOfEtaBins = 46;
27 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};
28 Int_t AliAnalysisHadEt::fgNumOfPtBins = 111;
29 Float_t AliAnalysisHadEt::fgPtAxis[117]=
30   {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,
31    0.2, .22, .24, .26, .28, 0.30, 0.32, .34, .36, .38, 0.40, .42, .44, .46, .48,
32    0.5, .52, .54, .56, .58, 0.60, 0.62, .64, .66, .68, 0.70, .72, .74, .76, .78,
33    .80, .82, .84, .86, .88, 0.90, 0.92, .94, .96, .98, 1.00,1.05, 1.1,1.15, 1.2,
34   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,
35    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,
36    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,
37   20.0,25.0,30.0,35.0,40.0, 45.0, 50.0}; 
38
39 AliAnalysisHadEt::AliAnalysisHadEt() :
40         fHistogramNameSuffix("")
41         ,fPdgDB(0)
42         ,fPiPlusCode(0)
43         ,fPiMinusCode(0)
44         ,fKPlusCode(0)
45         ,fKMinusCode(0)
46         ,fProtonCode(0)
47         ,fAntiProtonCode(0)
48         ,fLambdaCode(0)
49         ,fAntiLambdaCode(0)
50         ,fK0SCode(0)
51         ,fOmegaCode(0)
52         ,fAntiOmegaCode(0)
53         ,fXi0Code(0)
54         ,fAntiXi0Code(0)
55         ,fXiCode(0)
56         ,fAntiXiCode(0)
57         ,fSigmaCode(0)
58         ,fAntiSigmaCode(0)
59         ,fK0LCode(0)
60         ,fNeutronCode(0)
61         ,fAntiNeutronCode(0)
62         ,fEPlusCode(0)
63         ,fEMinusCode(0)
64         ,fPionMass(0)
65         ,fSumEt(0)
66         ,fSumEtAcc(0)
67         ,fTotEt(0)
68         ,fTotEtAcc(0)
69         ,fTotNeutralEt(0)
70         ,fTotNeutralEtAcc(0)
71         ,fTotChargedEt(0)
72         ,fTotChargedEtAcc(0)
73         ,fMultiplicity(0)
74         ,fChargedMultiplicity(0)
75         ,fNeutralMultiplicity(0)
76         ,fEtaCut(EtCommonCuts::kEtaCut)
77         ,fEtaCutAcc(0)
78                                   //,fPhiCutAccMin(0)
79                                   //,fPhiCutAccMax(360.)
80         ,fVertexXCut(0)
81         ,fVertexYCut(0)
82         ,fVertexZCut(0)
83                                   ,fIPxyCut(0)
84                                   ,fIPzCut(0)
85                                   //,fSingleCellEnergyCut(0)
86                                   //,fClusterEnergyCut(EtCommonCuts::kClusterEnergyCut)
87                                   //,fTrackPtCut(EtCommonCuts::kTrackPtCut)
88         ,ffesdtrackCutsITSTPC(0)
89         ,fesdtrackCutsTPC(0)
90         ,fesdtrackCutsITS(0)
91         ,fhistoList(0)
92 {//default constructor
93
94 }
95
96 AliAnalysisHadEt::~AliAnalysisHadEt()
97 {//destructor
98
99 }
100
101 Int_t AliAnalysisHadEt::AnalyseEvent(AliVEvent *event)
102 { //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.
103   cout<<"This event has "<<event->GetNumberOfTracks()<<" tracks"<<endl;
104      ResetEventValues();
105      AliMCEvent *mcEvent = dynamic_cast<AliMCEvent*>(event);
106
107     // Let's play with the stack!
108     AliStack *stack = mcEvent->Stack();
109
110     Int_t nPrim = stack->GetNtrack();
111
112     for (Int_t iPart = 0; iPart < nPrim; iPart++)
113     {
114
115         TParticle *part = stack->Particle(iPart);
116
117         if (!part)
118           {
119             Printf("ERROR: Could not get particle %d", iPart);
120             continue;
121           }
122     }
123   return 0;
124 }
125
126 void AliAnalysisHadEt::FillOutputList()
127 {//fill the output histogram list with histograms in all AliAnalysisHadEt's
128 }
129
130 void AliAnalysisHadEt::Init()
131 {//Initiate member vaiables to reasonable values
132   if(!fPdgDB) fPdgDB = new TDatabasePDG();
133   //the codes are defined in $ROOTSYS/etc/pdg_table.txt
134   fPionMass = fPdgDB->GetParticle("pi+")->Mass();
135   fPiPlusCode = fPdgDB->GetParticle("pi+")->PdgCode();
136     fPiMinusCode = fPdgDB->GetParticle("pi-")->PdgCode();
137     fKPlusCode = fPdgDB->GetParticle("K+")->PdgCode();
138     fKMinusCode = fPdgDB->GetParticle("K-")->PdgCode();
139     fProtonCode = fPdgDB->GetParticle("proton")->PdgCode();
140     fAntiProtonCode = fPdgDB->GetParticle("antiproton")->PdgCode();
141     fLambdaCode = fPdgDB->GetParticle("Lambda0")->PdgCode();
142     fAntiLambdaCode = fPdgDB->GetParticle("Lambda0_bar")->PdgCode();
143     fK0SCode = fPdgDB->GetParticle("K_S0")->PdgCode();
144     fOmegaCode = fPdgDB->GetParticle("Omega-")->PdgCode();
145     fAntiOmegaCode = fPdgDB->GetParticle("Omega+")->PdgCode();
146     fXi0Code = fPdgDB->GetParticle("Xi0")->PdgCode();
147     fAntiXi0Code = fPdgDB->GetParticle("Xi0_bar")->PdgCode();
148     fXiCode = fPdgDB->GetParticle("Xi-")->PdgCode();
149     fAntiXiCode = fPdgDB->GetParticle("Xi-_bar")->PdgCode();
150     fSigmaCode = fPdgDB->GetParticle("Sigma-")->PdgCode();
151     fAntiSigmaCode = fPdgDB->GetParticle("Sigma+")->PdgCode();
152     fK0LCode = fPdgDB->GetParticle("K_L0")->PdgCode();
153     fNeutronCode = fPdgDB->GetParticle("neutron")->PdgCode();
154     fAntiNeutronCode = fPdgDB->GetParticle("antineutron")->PdgCode();
155     fEPlusCode = fPdgDB->GetParticle("e+")->PdgCode();
156     fEMinusCode = fPdgDB->GetParticle("e-")->PdgCode();
157 }
158
159 void AliAnalysisHadEt::CreateHistograms()
160 {//creates histograms included in all AliAnalysisHadEt's
161 }
162
163 void AliAnalysisHadEt::FillHistograms()
164 {//Fills histograms filled for all AliAnalysisHadEt's
165 }
166
167 void AliAnalysisHadEt::ResetEventValues()
168 {//Resets event values of et to zero
169     fTotEt = 0;
170     fTotEtAcc = 0;
171     fTotNeutralEt = 0;
172     fTotNeutralEtAcc = 0;
173     fTotChargedEt  = 0;
174     fTotChargedEtAcc = 0;
175     fMultiplicity = 0;
176     fChargedMultiplicity = 0;
177     fNeutralMultiplicity = 0;
178 }
179 void AliAnalysisHadEt::CreateEtaPtHisto2D(TString name, TString title)
180 {     //creates a 2-d histogram in eta and phi and adds it to the list of histograms to be saved
181   TString *histoname   = new TString();
182   TString *histotitle   = new TString();
183
184   histoname->Append(name);
185   histotitle->Append(title);
186   //TH2F *h1 = new TH2F("h1", "Histogram with Gaussian random distribution", fgNumOfPtBins, ptBinsArray, fgnumOfEtaBins, etaBinsArray);
187
188   TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),fgNumOfPtBins, fgPtAxis, fgnumOfEtaBins, fgEtaAxis);
189   histo->SetYTitle("#eta");
190   histo->SetXTitle("p_{T}");
191   histo->SetZTitle("E_{T}");
192   histo->Sumw2();
193   fhistoList->Add(histo);
194   delete histoname;
195   delete histotitle;
196     
197 }
198
199 void AliAnalysisHadEt::CreateHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Float_t xlow,Float_t xhigh)
200 {     //creates a 1d histogram of the given dimensions and adds it to the list of histograms to be saved
201   TString *histoname   = new TString();
202   TString *histotitle   = new TString();
203   
204   //cout<<"creating "<<name<<endl;
205
206   histoname->Append(name);
207   histotitle->Append(title);
208   // printf("%s \n ",histoname->Data());
209   TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
210   histo->SetYTitle(ytitle);
211   histo->SetXTitle(xtitle);
212   histo->Sumw2();
213   fhistoList->Add(histo);
214   delete histoname;
215   delete histotitle;
216     
217 }
218 void AliAnalysisHadEt::CreateIntHisto1D(TString name, TString title, TString xtitle, TString ytitle,Int_t xbins, Int_t xlow,Int_t xhigh)
219 {     //creates a 1d integer histogram and adds it to the list of histograms to be saved
220   TString *histoname   = new TString();
221   TString *histotitle   = new TString();
222   
223   //cout<<"creating "<<name<<endl;
224
225   histoname->Append(name);
226   histotitle->Append(title);
227   // printf("%s \n ",histoname->Data());
228   TH1I *histo = new TH1I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh);
229   histo->SetYTitle(ytitle);
230   histo->SetXTitle(xtitle);
231   histo->Sumw2();
232   fhistoList->Add(histo);
233   delete histoname;
234   delete histotitle;
235     
236 }
237 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)
238 {     //creates a 2d histogram and adds it to the list of histograms to be saved
239   TString *histoname   = new TString();
240   TString *histotitle   = new TString();
241   
242   //cout<<"creating "<<name<<endl;
243
244   histoname->Append(name);
245   histotitle->Append(title);
246   // printf("%s \n ",histoname->Data());
247   TH2F *histo = new TH2F(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
248   histo->SetYTitle(ytitle);
249   histo->SetXTitle(xtitle);
250   histo->Sumw2();
251   fhistoList->Add(histo);
252   delete histoname;
253   delete histotitle;
254     
255 }
256 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)
257 {     //creates a 2-d integer histogram and adds it to the list of histograms to be saved
258   TString *histoname   = new TString();
259   TString *histotitle   = new TString();
260   
261   //cout<<"creating "<<name<<endl;
262
263   histoname->Append(name);
264   histotitle->Append(title);
265   // printf("%s \n ",histoname->Data());
266   TH2I *histo = new TH2I(histoname->Data(),histotitle->Data(),xbins,xlow,xhigh,ybins,ylow,yhigh);
267   histo->SetYTitle(ytitle);
268   histo->SetXTitle(xtitle);
269   histo->Sumw2();
270   fhistoList->Add(histo);
271   delete histoname;
272   delete histotitle;
273     
274 }
275
276 void AliAnalysisHadEt::CreateEtaHisto1D(TString name, TString title)
277 {     //creates 1d histogram in eta and adds it to the list of histograms to be saved
278   TString *histoname   = new TString();
279   TString *histotitle   = new TString();
280   
281
282   histoname->Append(name);
283   histotitle->Append(title);
284   TH1F *histo = new TH1F(histoname->Data(),histotitle->Data(),fgnumOfEtaBins, fgEtaAxis);
285   histo->SetYTitle("E_{T}");
286   histo->SetXTitle("#eta");
287   histo->Sumw2();
288   fhistoList->Add(histo);
289   delete histoname;
290   delete histotitle;
291     
292 }
293 void AliAnalysisHadEt::FillHisto1D(TString histname, Float_t x, Float_t weight)
294 {//fills a 1d histogram with the name histoname with the value x and the weight "weight"
295   TH1F     *histo; 
296   TString  *name   = new TString();
297
298   name->Append(histname);       
299   histo = (TH1F *)fhistoList->FindObject(name->Data()); 
300   if(histo){
301     histo->Fill((Double_t)x, weight);
302   }
303   else{cerr<<"CorrelationMaker::FillHisto1D: no histogram "<< name->Data()<<endl;}
304   delete name;
305 }
306 void AliAnalysisHadEt::FillHisto2D(TString histname, Float_t x, Float_t y, Float_t weight)
307 {//fills a 2d histogram with the name histoname with the value x and the weight "weight"
308   TH2F     *histo; 
309   TString  *name   = new TString();
310   
311   name->Append(histname);       
312   histo = (TH2F *)fhistoList->FindObject(name->Data()); 
313   if(histo){
314     histo->Fill((Double_t)x,(Double_t)y, weight);
315   }
316   else{cerr<<"CorrelationMaker::FillHisto2D: no histogram "<< name->Data()<<endl;}
317   delete name;
318 }
319
320
321 Float_t AliAnalysisHadEt::Et(TParticle *part, float mass){//function to calculate et in the same way as it would be calculated in a calorimeter
322   if(mass+1000<0.01){//if no mass given return default.  The default argument is -1000
323     if(TMath::Abs(part->GetPDG(0)->PdgCode())==2212 || TMath::Abs(part->GetPDG(0)->PdgCode())==2112){
324       if(part->GetPDG(0)->PdgCode()==-2212 || part->GetPDG(0)->PdgCode()==-2112){//antiproton or antineutron
325         //for antinucleons we specifically want to return the kinetic energy plus twice the rest mass
326         return (part->Energy()+part->GetMass())*TMath::Sin(part->Theta());
327       }
328       if(part->GetPDG(0)->PdgCode()==2212 || part->GetPDG(0)->PdgCode()==2112){//antiproton or antineutron
329         //for nucleons we specifically want to return the kinetic energy only
330         return (part->Energy()-part->GetMass())*TMath::Sin(part->Theta());
331       }
332     }
333     else{//otherwise go to the default
334       return part->Energy()*TMath::Sin(part->Theta());
335     }
336   }
337   else{//otherwise use the mass that was given
338     return (TMath::Sqrt(TMath::Power(part->P(),2.0)+TMath::Power(mass,2.0)))*TMath::Sin(part->Theta());
339   }
340   return 0.0;
341 }