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10eaad41 | 1 | /************************************************************************** |
2 | * Authors: Martha Spyropoulou-Stassinaki and the members | |
3 | * of the Greek group at Physics Department of Athens University | |
4 | * Paraskevi Ganoti, Anastasia Belogianni and Filimon Roukoutakis | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | //----------------------------------------------------------------- | |
17 | // AliAnalysisKinkESDMC class | |
18 | // Example of an analysis task for kink topology study | |
19 | // Kaons from kink topology are 'identified' in this code | |
20 | //----------------------------------------------------------------- | |
21 | ||
be1a7181 | 22 | #include "TF1.h" |
23 | #include "TMath.h" | |
10eaad41 | 24 | #include "TH1F.h" |
25 | #include "TH2F.h" | |
894840ad | 26 | #include "TCanvas.h" |
10eaad41 | 27 | |
10eaad41 | 28 | #include "AliESDEvent.h" |
10eaad41 | 29 | #include "AliMCEvent.h" |
10eaad41 | 30 | #include "AliStack.h" |
10eaad41 | 31 | #include "AliESDkink.h" |
32 | ||
be1a7181 | 33 | #include "AliAnalysisKinkESDMC.h" |
10eaad41 | 34 | |
be1a7181 | 35 | ClassImp(AliAnalysisKinkESDMC) |
10eaad41 | 36 | //________________________________________________________________________ |
37 | AliAnalysisKinkESDMC::AliAnalysisKinkESDMC(const char *name) | |
92adf4f6 | 38 | : AliAnalysisTaskSE(name), fHistPtESD(0),fHistPt(0),fHistQtAll(0),fHistQt1(0),fHistQt2(0) |
10eaad41 | 39 | , fHistPtKaon(0),fHistPtKPDG(0),fHistEta(0),fHistEtaK(0),fptKMC(0),fMultiplMC(0),fESDMult(0),fgenpt(0),frad(0), |
40 | fKinkKaon(0), fKinkKaonBg(0), fM1kaon(0), fgenPtEtR(0),fPtKink(0), fptKink(0), | |
92adf4f6 | 41 | fcodeH(0), fdcodeH(0), fAngMomK(0),fAngMomPi(0), fAngMomKC(0), fMultESDK(0), fMultMCK(0), |
10eaad41 | 42 | fRpr(0),fZpr(0), |
10eaad41 | 43 | fZvXv(0),fZvYv(0), fXvYv(0), fPtPrKink(0), f1(0), f2(0), |
44 | fListOfHistos(0) | |
10eaad41 | 45 | |
46 | { | |
47 | // Constructor | |
48 | ||
49 | // Define input and output slots here | |
50 | // Input slot #0 works with a TChain | |
7ccf0419 | 51 | // DefineInput(0, TChain::Class()); |
10eaad41 | 52 | DefineOutput(1, TList::Class()); |
53 | } | |
54 | ||
55 | //________________________________________________________________________ | |
92adf4f6 | 56 | void AliAnalysisKinkESDMC::UserCreateOutputObjects() |
10eaad41 | 57 | { |
58 | // Create histograms | |
59 | // Called once | |
60 | ||
61 | f1=new TF1("f1","((atan([0]*[1]*(1.0/(sqrt((x^2)*(1.0-([1]^2))-([0]^2)*([1]^2))))))*180.)/[2]",1.1,10.0); | |
62 | f1->SetParameter(0,0.493677); | |
63 | f1->SetParameter(1,0.9127037); | |
64 | f1->SetParameter(2,TMath::Pi()); | |
65 | ||
66 | ||
67 | f2=new TF1("f2","((atan([0]*[1]*(1.0/(sqrt((x^2)*(1.0-([1]^2))-([0]^2)*([1]^2))))))*180.)/[2]",0.1,10.0); | |
68 | f2->SetParameter(0,0.13957018); | |
69 | f2->SetParameter(1,0.2731374); | |
70 | f2->SetParameter(2,TMath::Pi()); | |
71 | //Open file 1= CAF | |
72 | //OpenFile(1); | |
73 | ||
92adf4f6 | 74 | fHistPtESD = new TH1F("fHistPtESD", "P_{T} distribution",100, 0.0,10.0); |
10eaad41 | 75 | fHistPtESD->GetXaxis()->SetTitle("P_{T} (GeV/c)"); |
76 | fHistPtESD->GetYaxis()->SetTitle("dN/dP_{T} (c/GeV)"); | |
77 | fHistPtESD->SetMarkerStyle(kFullCircle); | |
92adf4f6 | 78 | fHistPt = new TH1F("fHistPt", "P_{T} distribution",100, 0.0,10.0); |
10eaad41 | 79 | fHistQtAll = new TH1F("fHistQtAll", "Q_{T} distr All Kinks ",100, 0.0,.250); |
80 | fHistQt1= new TH1F("fHistQt1", "Q_{T} distribution",100, 0.0,.300); | |
81 | fHistQt2= new TH1F("fHistQt2", "Q_{T} distribution",100, 0.0,.300); | |
92adf4f6 | 82 | fHistPtKaon = new TH1F("fHistPtKaon", "P_{T}Kaon distribution",100, 0.0,10.0); |
83 | fHistPtKPDG = new TH1F("fHistPtKPDG", "P_{T}Kaon distribution",100, 0.0,10.0); | |
10eaad41 | 84 | fHistEta= new TH1F("fHistEta", "Eta distribution", 26,-1.3, 1.3); |
85 | fHistEtaK= new TH1F("fHistEtaK", "EtaK distribution", 26,-1.3, 1.3); | |
92adf4f6 | 86 | fptKMC= new TH1F("fptKMC", "P_{T}Kaon generated",100, 0.0,10.0); |
87 | fMultiplMC= new TH1F("fMultiplMC", "charge multiplicity MC",60, 0.5,120.5); | |
10eaad41 | 88 | fESDMult= new TH1F("fESDMult", "charge multipliESD", 60, 0.5,120.5); |
92adf4f6 | 89 | fgenpt= new TH1F("fgenpt", "genpt K distribution",100, 0.0,10.0); |
10eaad41 | 90 | frad= new TH1F("frad", "radius K generated",100,0.,400.); |
92adf4f6 | 91 | fKinkKaon= new TH1F("fKinkKaon", "P_{T}Kaon kinks identi",100, 0.0,10.0); |
92 | fKinkKaonBg= new TH1F("fKinkKaonBg", "P_{T}Kaon kinks backgr",100, 0.0,10.0); | |
10eaad41 | 93 | fM1kaon= new TH1F("fM1kaon","Invar m(kaon) from kink->mu+netrino decay",80,0.0, 0.8); |
92adf4f6 | 94 | fgenPtEtR= new TH1F("fgenPtEtR", "P_{T}Kaon distribution",100, 0.0,10.0); |
95 | fPtKink= new TH1F("fPtKink", "P_{T}Kaon Kink bution",100, 0.0,10.0); | |
96 | fptKink= new TH1F("fptKink", "P_{T}Kaon Kink bution",100, 0.0,10.0); | |
10eaad41 | 97 | fcodeH = new TH2F("fcodeH", "code vrs dcode dist. kinks,K",100,0.,2500.,100,0.,2500.); |
98 | fdcodeH = new TH2F("fdcodeH", "code vrs dcode dist. kinks,K",100,0.,2500.,100,0.,2500.); | |
99 | fAngMomK= new TH2F("fAngMomK","Decay angle vrs Mother Mom,K",100,0.0,5.0,80,0.,80.); | |
100 | fAngMomPi= new TH2F("fAngMomPi","Decay angle vrs Mother Mom,Pi",100,0.0,5.0,80,0.,80.); | |
92adf4f6 | 101 | fAngMomKC= new TH2F("fAngMomKC","Decay angle vrs Mother Mom,K",100,0.0,5.0,80,0.,80.); |
102 | fMultESDK=new TH1F("fMultESDK", "charge multipliESD kaons", 60, 0.5,240.5); | |
103 | fMultMCK=new TH1F("fMultMCK", "charge multipli MC kaons",100, 0.5,600.5); | |
10eaad41 | 104 | fRpr = new TH1D("fRpr", "rad distribution PID pr",50,0.0, 2.5); |
105 | fZpr = new TH1D("fZpr", "z distribution PID pr ",60,-15.,15.); | |
10eaad41 | 106 | fZvXv= new TH2F("fZvXv","Xv-Zv main vtx",60,-0.5,0.5,60, -15., 15.0); |
107 | fZvYv= new TH2F("fZvYv","Yv-Zv main vtx",60,-0.5,0.5, 60, -15., 15.); | |
108 | fXvYv= new TH2F("fXvYv","Xv-Yv main vtx", 60,-1.5,1.5, 60, -1.5, 1.5); | |
92adf4f6 | 109 | fPtPrKink=new TH1F("fPtPrKink","pt of ESD kaonKink tracks",100, 0.0,10.0); |
10eaad41 | 110 | |
111 | fListOfHistos=new TList(); | |
112 | ||
113 | fListOfHistos->Add(fHistPtESD); | |
114 | fListOfHistos->Add(fHistPt); | |
115 | fListOfHistos->Add(fHistQtAll); | |
116 | fListOfHistos->Add(fHistQt1); | |
117 | fListOfHistos->Add(fHistQt2); | |
118 | fListOfHistos->Add(fHistPtKaon); | |
119 | fListOfHistos->Add(fHistPtKPDG); | |
120 | fListOfHistos->Add(fHistEta); | |
121 | fListOfHistos->Add(fHistEtaK); | |
122 | fListOfHistos->Add(fptKMC); | |
123 | fListOfHistos->Add(fMultiplMC); | |
124 | fListOfHistos->Add(fESDMult); | |
125 | fListOfHistos->Add(fgenpt); | |
126 | fListOfHistos->Add(frad); | |
127 | fListOfHistos->Add(fKinkKaon); | |
128 | fListOfHistos->Add(fKinkKaonBg); | |
129 | fListOfHistos->Add(fM1kaon); | |
130 | fListOfHistos->Add(fgenPtEtR); | |
131 | fListOfHistos->Add(fPtKink); | |
132 | fListOfHistos->Add(fptKink); | |
133 | fListOfHistos->Add(fcodeH); | |
134 | fListOfHistos->Add(fdcodeH); | |
10eaad41 | 135 | fListOfHistos->Add(fAngMomK); |
136 | fListOfHistos->Add(fAngMomPi); | |
92adf4f6 | 137 | fListOfHistos->Add(fAngMomKC); |
138 | fListOfHistos->Add(fMultESDK); | |
139 | fListOfHistos->Add(fMultMCK); | |
10eaad41 | 140 | fListOfHistos->Add(fRpr); |
141 | fListOfHistos->Add(fZpr); | |
10eaad41 | 142 | fListOfHistos->Add(fZvXv); |
143 | fListOfHistos->Add(fZvYv); | |
144 | fListOfHistos->Add(fXvYv); | |
145 | fListOfHistos->Add(fPtPrKink); | |
146 | } | |
147 | ||
148 | //________________________________________________________________________ | |
92adf4f6 | 149 | void AliAnalysisKinkESDMC::UserExec(Option_t *) |
10eaad41 | 150 | { |
151 | // Main loop | |
152 | // Called for each event | |
153 | ||
154 | // Process MC truth, therefore we receive the AliAnalysisManager and ask it for the AliMCEventHandler | |
155 | // This handler can return the current MC event | |
92adf4f6 | 156 | |
157 | AliVEvent *event = InputEvent(); | |
158 | if (!event) { | |
159 | Printf("ERROR: Could not retrieve event"); | |
160 | return; | |
161 | } | |
162 | ||
163 | AliESDEvent* esd = dynamic_cast<AliESDEvent*>(event); | |
164 | if (!esd) { | |
165 | Printf("ERROR: Could not retrieve esd"); | |
166 | return; | |
10eaad41 | 167 | } |
168 | ||
92adf4f6 | 169 | AliMCEvent* mcEvent = MCEvent(); |
10eaad41 | 170 | if (!mcEvent) { |
171 | Printf("ERROR: Could not retrieve MC event"); | |
172 | return; | |
173 | } | |
174 | ||
7ccf0419 | 175 | Printf("MC particles: %d", mcEvent->GetNumberOfTracks()); |
10eaad41 | 176 | |
10eaad41 | 177 | AliStack* stack=mcEvent->Stack(); |
178 | ||
179 | //primary tracks in MC | |
180 | Int_t nPrim = stack->GetNprimary(); | |
181 | // | |
92adf4f6 | 182 | const AliESDVertex *vertex=GetEventVertex(esd); |
10eaad41 | 183 | if(!vertex) return; |
184 | // | |
185 | Double_t vpos[3]; | |
186 | vertex->GetXYZ(vpos); | |
187 | fZpr->Fill(vpos[2]); | |
10eaad41 | 188 | |
189 | Double_t vtrack[3], ptrack[3]; | |
190 | ||
191 | ||
92adf4f6 | 192 | // Int_t nESDTracK = 0; |
10eaad41 | 193 | |
92adf4f6 | 194 | Int_t nGoodTracks = esd->GetNumberOfTracks(); |
10eaad41 | 195 | fESDMult->Fill(nGoodTracks); |
92adf4f6 | 196 | |
10eaad41 | 197 | // |
198 | // track loop | |
92adf4f6 | 199 | for (Int_t iTracks = 0; iTracks < esd->GetNumberOfTracks(); iTracks++) { |
200 | // loop only on primary tracks | |
201 | ||
202 | AliESDtrack* track = esd->GetTrack(iTracks); | |
10eaad41 | 203 | if (!track) { |
7ccf0419 | 204 | Printf("ERROR: Could not receive track %d", iTracks); |
10eaad41 | 205 | continue; |
206 | } | |
207 | ||
208 | ||
209 | fHistPt->Fill(track->Pt()); | |
210 | ||
92adf4f6 | 211 | |
212 | Int_t label = track->GetLabel(); | |
213 | label = TMath::Abs(label); | |
214 | TParticle * part = stack->Particle(label); | |
215 | if (!part) continue; | |
216 | // loop only on Primary tracks | |
7ccf0419 | 217 | if (label > nPrim) continue; /// primary tracks only , 26/8/09 EFF study |
92adf4f6 | 218 | |
7ccf0419 | 219 | // pt cut at 300 MeV |
10eaad41 | 220 | if ( (track->Pt())<.300)continue; |
221 | ||
92adf4f6 | 222 | // UInt_t status=track->GetStatus(); |
10eaad41 | 223 | |
224 | // if((status&AliESDtrack::kITSrefit)==0) continue; | |
92adf4f6 | 225 | // if((status&AliESDtrack::kTPCrefit)==0) continue; |
226 | // ayksanei to ratio BG/real if((track->GetTPCchi2()/track->GetTPCclusters(0))>4.5) continue; | |
227 | if((track->GetTPCchi2()/track->GetTPCclusters(0))>4.5) continue; | |
10eaad41 | 228 | |
229 | Double_t extCovPos[15]; | |
230 | track->GetExternalCovariance(extCovPos); | |
92adf4f6 | 231 | // if(extCovPos[0]>2) continue; |
232 | // if(extCovPos[2]>2) continue; | |
233 | // if(extCovPos[5]>0.5) continue; | |
234 | // if(extCovPos[9]>0.5) continue; | |
235 | // if(extCovPos[14]>2) continue; | |
10eaad41 | 236 | |
237 | ||
238 | track->GetXYZ(vtrack); | |
239 | fXvYv->Fill(vtrack[0],vtrack[1]); | |
92adf4f6 | 240 | fZvYv->Fill(vtrack[0],vtrack[2]); |
241 | fZvXv->Fill(vtrack[1],vtrack[2]); | |
10eaad41 | 242 | |
243 | // track momentum | |
244 | track->GetPxPyPz(ptrack); | |
245 | ||
246 | TVector3 trackMom(ptrack[0],ptrack[1],ptrack[2]); | |
247 | ||
248 | Double_t trackEta=trackMom.Eta(); | |
249 | ||
250 | ||
251 | ||
252 | Float_t nSigmaToVertex = GetSigmaToVertex(track); | |
253 | ||
254 | Float_t bpos[2]; | |
255 | Float_t bCovpos[3]; | |
256 | track->GetImpactParameters(bpos,bCovpos); | |
257 | ||
258 | if (bCovpos[0]<=0 || bCovpos[2]<=0) { | |
7ccf0419 | 259 | Printf("Estimated b resolution lower or equal zero!"); |
10eaad41 | 260 | bCovpos[0]=0; bCovpos[2]=0; |
261 | } | |
262 | ||
263 | Float_t dcaToVertexXYpos = bpos[0]; | |
264 | Float_t dcaToVertexZpos = bpos[1]; | |
265 | ||
266 | fRpr->Fill(dcaToVertexZpos); | |
92adf4f6 | 267 | // test for secondary kinks , 5/7/2009 |
10eaad41 | 268 | if(nSigmaToVertex>=4) continue; |
92adf4f6 | 269 | // if((dcaToVertexXYpos>3.0)||(dcaToVertexZpos>3.0)) continue; //arxiko |
7ccf0419 | 270 | if((dcaToVertexXYpos>4.0)||(dcaToVertexZpos>5.0)) continue; // 27/8 |
10eaad41 | 271 | |
10eaad41 | 272 | |
273 | // cut on eta | |
92adf4f6 | 274 | if( (TMath::Abs(trackEta )) > 0.9 ) continue; |
10eaad41 | 275 | fHistPtESD->Fill(track->Pt()); |
276 | ||
277 | // Add Kink analysis | |
278 | ||
279 | Int_t indexKinkPos=track->GetKinkIndex(0); | |
280 | // loop on kinks | |
281 | if(indexKinkPos<0){ | |
282 | fPtKink->Fill(track->Pt()); /// pt from track | |
283 | ||
284 | // select kink class | |
285 | ||
92adf4f6 | 286 | AliESDkink *kink=esd->GetKink(TMath::Abs(indexKinkPos)-1); |
10eaad41 | 287 | // |
288 | ||
289 | Int_t eSDfLabel1=kink->GetLabel(0); | |
290 | TParticle *particle1= stack->Particle(TMath::Abs(eSDfLabel1)); | |
291 | Int_t code1= particle1->GetPdgCode(); | |
292 | ||
293 | Int_t eSDfLabeld=kink->GetLabel(1); | |
294 | TParticle *particled= stack->Particle(TMath::Abs(eSDfLabeld)); | |
295 | Int_t dcode1= particled->GetPdgCode(); | |
296 | ||
297 | const TVector3 motherMfromKink(kink->GetMotherP()); | |
298 | const TVector3 daughterMKink(kink->GetDaughterP()); | |
299 | Float_t qT=kink->GetQt(); | |
300 | ||
10eaad41 | 301 | fHistQtAll->Fill(qT) ; // Qt distr |
302 | ||
303 | fptKink->Fill(motherMfromKink.Pt()); /// pt from kink | |
304 | ||
92adf4f6 | 305 | Float_t kinkAngle=TMath::RadToDeg()*kink->GetAngle(2); |
306 | ||
10eaad41 | 307 | // fake kinks, small Qt and small kink angle |
92adf4f6 | 308 | if(( kinkAngle<1.)&&(TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==13)) fHistQt1 ->Fill(qT) ; // Qt distr |
7ccf0419 | 309 | |
10eaad41 | 310 | if(qT<0.012) continue; // remove fake kinks |
311 | ||
10eaad41 | 312 | //remove the double taracks |
7ccf0419 | 313 | if( (kinkAngle<1.) ) continue; |
314 | ||
10eaad41 | 315 | // |
10eaad41 | 316 | |
92adf4f6 | 317 | if((kink->GetR()>120.)&&(kink->GetR()<220.)&&(TMath::Abs(trackEta)<0.9)&&(label<nPrim)) { |
318 | if( ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==13))|| | |
319 | ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==11)) || | |
320 | ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==211)) ) { | |
321 | fHistPtKPDG->Fill(track->Pt()); // ALL KAONS (pdg) inside ESD kink sample | |
322 | fHistEta->Fill(trackEta) ; // Eta distr of PDG kink ESD kaons | |
323 | fMultESDK->Fill(nGoodTracks); | |
7ccf0419 | 324 | fHistQt2->Fill(qT); // PDG ESD kaons |
92adf4f6 | 325 | } |
326 | } | |
10eaad41 | 327 | |
328 | // maximum decay angle at a given mother momentum | |
329 | Double_t maxDecAngKmu=f1->Eval(motherMfromKink.Mag(),0.,0.,0.); | |
330 | Double_t maxDecAngpimu=f2->Eval(motherMfromKink.Mag(),0.,0.,0.); | |
331 | // two dimensional plot | |
332 | if(TMath::Abs(code1)==321) fAngMomK->Fill(motherMfromKink.Mag(), kinkAngle); | |
333 | if(TMath::Abs(code1)==211) fAngMomPi->Fill(motherMfromKink.Mag(), kinkAngle); | |
334 | // | |
335 | // invariant mass of mother track decaying to mu | |
336 | Float_t energyDaughterMu=TMath::Sqrt(daughterMKink.Mag()*daughterMKink.Mag()+0.105658*0.105658); | |
337 | Float_t p1XM= motherMfromKink.Px(); | |
338 | Float_t p1YM= motherMfromKink.Py(); | |
339 | Float_t p1ZM= motherMfromKink.Pz(); | |
340 | Float_t p2XM= daughterMKink.Px(); | |
341 | Float_t p2YM= daughterMKink.Py(); | |
342 | Float_t p2ZM= daughterMKink.Pz(); | |
343 | Float_t p3Daughter=TMath::Sqrt(((p1XM-p2XM)*(p1XM-p2XM))+((p1YM-p2YM)*(p1YM-p2YM))+((p1ZM-p2ZM)*(p1ZM-p2ZM))); | |
344 | Double_t invariantMassKmu= TMath::Sqrt((energyDaughterMu+p3Daughter)*(energyDaughterMu+p3Daughter)-motherMfromKink.Mag()*motherMfromKink.Mag()); | |
345 | ||
346 | fM1kaon->Fill(invariantMassKmu); | |
347 | ||
348 | // kaon selection from kinks | |
7ccf0419 | 349 | //if((kinkAngle>maxDecAngpimu)&&(qT>0.05)&&(qT<0.25)&&((kink->GetR()>120.)&&(kink->GetR()<220.))&&(TMath::Abs(trackEta)<0.9)&&(invariantMassKmu<0.6)) { |
350 | if((kinkAngle>maxDecAngpimu)&&(qT>0.04)&&(qT<0.30)&&((kink->GetR()>120.)&&(kink->GetR()<220.))&&(TMath::Abs(trackEta)<0.9)&&(invariantMassKmu<0.6)) { | |
351 | ||
352 | if( (kinkAngle>maxDecAngKmu*1.1) && ( motherMfromKink.Mag()> 1.2 ) ) fcodeH->Fill(TMath::Abs(code1), TMath::Abs(dcode1)); | |
353 | if ( (kinkAngle>maxDecAngKmu*1.1) && ( motherMfromKink.Mag()> 1.2 ) ) fAngMomKC->Fill(motherMfromKink.Mag(), kinkAngle); | |
10eaad41 | 354 | |
10eaad41 | 355 | |
7ccf0419 | 356 | if ( (kinkAngle>maxDecAngKmu*1.1) && ( motherMfromKink.Mag()> 1.2 ) ) continue; // maximum angle selection revised 22/10/2009 |
10eaad41 | 357 | |
358 | fHistPtKaon->Fill(track->Pt()); //all PID kink-kaon | |
359 | ||
92adf4f6 | 360 | // kaons from k to mun and k to pipi and to e decay |
361 | if( ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==13))|| | |
362 | ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==11)) || | |
363 | ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==211)) ) { | |
10eaad41 | 364 | |
7ccf0419 | 365 | if ( label<=nPrim ) fPtPrKink->Fill(track->Pt()); |
92adf4f6 | 366 | fKinkKaon->Fill(track->Pt()); |
367 | fHistEtaK->Fill(trackEta); | |
368 | } | |
10eaad41 | 369 | else { |
370 | fKinkKaonBg->Fill(track->Pt()); | |
7ccf0419 | 371 | fdcodeH->Fill( TMath::Abs(code1), TMath::Abs(dcode1)); // put it here, 22/10/2009 |
372 | } // primary and all +BG | |
10eaad41 | 373 | |
374 | } // kink selection | |
375 | ||
376 | ||
377 | } //End Kink Information | |
378 | ||
379 | ||
380 | } //track loop | |
381 | ||
382 | // loop over mc particles | |
383 | ||
384 | // variable to count tracks | |
385 | Int_t nMCTracks = 0; | |
92adf4f6 | 386 | Int_t nMCKinkKs = 0; |
10eaad41 | 387 | |
92adf4f6 | 388 | for (Int_t iMc = 0; iMc < nPrim; iMc++) |
10eaad41 | 389 | { |
390 | // AliDebug(AliLog::kDebug+1, Form("MC Loop: Processing particle %d.", iMc)); | |
391 | ||
392 | TParticle* particle = stack->Particle(iMc); | |
393 | ||
394 | if (!particle) | |
395 | { | |
396 | // AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (mc loop).", iMc)); | |
397 | continue; | |
398 | } | |
399 | ||
400 | // | |
401 | Float_t eta = particle->Eta(); | |
402 | ||
92adf4f6 | 403 | if (TMath::Abs(eta) > 0.9) |
10eaad41 | 404 | continue; |
405 | ||
406 | Double_t ptK = particle->Pt(); | |
407 | ||
408 | if( ptK <0.300) continue; | |
409 | ||
04c3c355 | 410 | Int_t code = particle->GetPdgCode(); |
92adf4f6 | 411 | Int_t mcProcess=-1011; |
412 | if ((code==321)||(code==-321)){ | |
10eaad41 | 413 | |
92adf4f6 | 414 | |
10eaad41 | 415 | fptKMC->Fill(ptK); |
92adf4f6 | 416 | |
10eaad41 | 417 | |
92adf4f6 | 418 | // fMultiplMC->Fill(nPrim); |
7ccf0419 | 419 | Int_t nMCKpi =0; |
10eaad41 | 420 | |
421 | Int_t firstD=particle->GetFirstDaughter(); | |
422 | Int_t lastD=particle->GetLastDaughter(); | |
423 | //loop on secondaries | |
7ccf0419 | 424 | for (Int_t k=firstD;k<=lastD;k++) { |
425 | if ( k > 0 ) { | |
426 | TParticle* daughter1=stack->Particle(k); // 27/8 | |
04c3c355 | 427 | Int_t dcode = daughter1->GetPdgCode(); |
10eaad41 | 428 | |
92adf4f6 | 429 | mcProcess=daughter1->GetUniqueID(); |
430 | if (mcProcess==4) { | |
10eaad41 | 431 | |
432 | ||
92adf4f6 | 433 | // frad->Fill(daughter1->R()); |
10eaad41 | 434 | |
92adf4f6 | 435 | if (((daughter1->R())>120)&&((daughter1->R())<220) ){ |
10eaad41 | 436 | if (( ( code==321 )&& ( dcode ==-13 ))|| (( code == -321 )&& ( dcode == 13))) fgenPtEtR->Fill( ptK );//to muon |
7ccf0419 | 437 | // if (( ( code==321 )&& ( dcode ==211 ))|| (( code == -321 )&& ( dcode ==-211))) fgenPtEtR->Fill( ptK );//to pion |
92adf4f6 | 438 | if (( ( code==321 )&& ( dcode ==-11 ))|| (( code == -321 )&& ( dcode ==11))) fgenPtEtR->Fill( ptK );// to electr |
7ccf0419 | 439 | if (( ( code==321 )&& ( dcode ==211 ))|| (( code == -321 )&& ( dcode ==-211))) nMCKpi++ ; |
440 | ||
92adf4f6 | 441 | //fMultMCK->Fill(nPrim); |
442 | frad->Fill(daughter1->R()); | |
443 | nMCKinkKs++; | |
10eaad41 | 444 | } |
445 | // next only to mu decay | |
446 | if (((code==321)&&(dcode==-13))||((code==-321)&&(dcode==13))){ | |
447 | ||
448 | ||
92adf4f6 | 449 | if (((daughter1->R())>120)&&((daughter1->R())<220)){ |
7ccf0419 | 450 | // fgenpt->Fill(ptK); |
10eaad41 | 451 | } |
452 | } | |
92adf4f6 | 453 | }// decay |
7ccf0419 | 454 | } // positive k |
92adf4f6 | 455 | }// daughters |
7ccf0419 | 456 | if( nMCKpi == 1) fgenPtEtR->Fill(ptK); // k to pipi |
457 | if( nMCKpi > 1) fgenpt->Fill(ptK);// k to pipipi | |
10eaad41 | 458 | |
92adf4f6 | 459 | } /// kaons |
10eaad41 | 460 | |
461 | ||
462 | ||
463 | nMCTracks++; | |
464 | }// end of mc particle | |
465 | ||
466 | // printf("hello mc"); | |
467 | fMultiplMC->Fill(nMCTracks); | |
92adf4f6 | 468 | if( nMCKinkKs>0) fMultMCK->Fill(nPrim); |
10eaad41 | 469 | |
470 | PostData(1, fListOfHistos); | |
471 | ||
472 | } | |
473 | ||
474 | //________________________________________________________________________ | |
475 | void AliAnalysisKinkESDMC::Terminate(Option_t *) | |
476 | { | |
477 | // Draw result to the screen | |
478 | // Called once at the end of the query | |
894840ad | 479 | fHistPtKaon = dynamic_cast<TH1F*> (((TList*)GetOutputData(1))->FindObject("fHistPtKaon")); |
480 | if (!fHistPtKaon) { | |
481 | Printf("ERROR: fHistPtKaon not available"); | |
482 | return; | |
483 | } | |
484 | ||
6ed99c20 | 485 | TCanvas *canCheckKinkESDMC = new TCanvas("AliAnalysisKinkESDMC","Check KinkESDMC",1); |
486 | canCheckKinkESDMC->Draw(); | |
487 | canCheckKinkESDMC->cd(); | |
894840ad | 488 | fHistPtKaon->DrawCopy("E"); |
10eaad41 | 489 | |
490 | } | |
491 | //____________________________________________________________________// | |
492 | ||
493 | Float_t AliAnalysisKinkESDMC::GetSigmaToVertex(AliESDtrack* esdTrack) const { | |
494 | // Calculates the number of sigma to the vertex. | |
495 | ||
496 | Float_t b[2]; | |
497 | Float_t bRes[2]; | |
498 | Float_t bCov[3]; | |
499 | ||
500 | esdTrack->GetImpactParameters(b,bCov); | |
501 | ||
502 | if (bCov[0]<=0 || bCov[2]<=0) { | |
503 | //AliDebug(1, "Estimated b resolution lower or equal zero!"); | |
504 | bCov[0]=0; bCov[2]=0; | |
505 | } | |
506 | bRes[0] = TMath::Sqrt(bCov[0]); | |
507 | bRes[1] = TMath::Sqrt(bCov[2]); | |
508 | ||
509 | if (bRes[0] == 0 || bRes[1] ==0) return -1; | |
510 | ||
511 | Float_t d = TMath::Sqrt(TMath::Power(b[0]/bRes[0],2) + TMath::Power(b[1]/bRes[1],2)); | |
512 | ||
513 | if (TMath::Exp(-d * d / 2) < 1e-10) return 1000; | |
514 | ||
515 | d = TMath::ErfInverse(1 - TMath::Exp(-d * d / 2)) * TMath::Sqrt(2); | |
516 | ||
517 | return d; | |
518 | } | |
519 | //____________________________________________________________________// | |
520 | ||
521 | const AliESDVertex* AliAnalysisKinkESDMC::GetEventVertex(const AliESDEvent* esd) const | |
522 | // Get the vertex from the ESD and returns it if the vertex is valid | |
523 | ||
524 | { | |
525 | // Get the vertex | |
526 | ||
527 | const AliESDVertex* vertex = esd->GetPrimaryVertex(); | |
528 | ||
529 | if((vertex->GetStatus()==kTRUE)&&(vertex->GetNContributors()>2)) return vertex; | |
530 | else | |
531 | { | |
532 | vertex = esd->GetPrimaryVertexSPD(); | |
533 | if((vertex->GetStatus()==kTRUE)&&(vertex->GetNContributors()>2)) return vertex; | |
534 | else | |
535 | return 0; | |
536 | } | |
f92b626a | 537 | } |