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Rulechecker-complying update from P.Ganoti (pganoti@phys.uoa.gr)
[u/mrichter/AliRoot.git] / PWG2 / KINK / AliAnalysisKinkESDMC.cxx
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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
22#include "TChain.h"
23#include "TTree.h"
24#include "TH1F.h"
25#include "TH2F.h"
26#include "TH1D.h"
27#include "TH2D.h"
28#include "TParticle.h"
29#include <TVector3.h>
30#include "TF1.h"
31
92adf4f6 32#include "AliAnalysisTask.h"
10eaad41 33#include "AliAnalysisManager.h"
34
92adf4f6 35#include "AliVEvent.h"
10eaad41 36#include "AliESDEvent.h"
10eaad41 37#include "AliMCEvent.h"
10eaad41 38#include "AliAnalysisKinkESDMC.h"
10eaad41 39#include "AliStack.h"
40#include "AliESDpid.h"
41#include "AliESDkink.h"
42
43ClassImp(AliAnalysisKinkESDMC)
44
10eaad41 45
46//________________________________________________________________________
47AliAnalysisKinkESDMC::AliAnalysisKinkESDMC(const char *name)
92adf4f6 48 : AliAnalysisTaskSE(name), fHistPtESD(0),fHistPt(0),fHistQtAll(0),fHistQt1(0),fHistQt2(0)
10eaad41 49 , fHistPtKaon(0),fHistPtKPDG(0),fHistEta(0),fHistEtaK(0),fptKMC(0),fMultiplMC(0),fESDMult(0),fgenpt(0),frad(0),
50 fKinkKaon(0), fKinkKaonBg(0), fM1kaon(0), fgenPtEtR(0),fPtKink(0), fptKink(0),
92adf4f6 51 fcodeH(0), fdcodeH(0), fAngMomK(0),fAngMomPi(0), fAngMomKC(0), fMultESDK(0), fMultMCK(0),
10eaad41 52 fRpr(0),fZpr(0),
10eaad41 53 fZvXv(0),fZvYv(0), fXvYv(0), fPtPrKink(0), f1(0), f2(0),
54 fListOfHistos(0)
10eaad41 55
56{
57 // Constructor
58
59 // Define input and output slots here
60 // Input slot #0 works with a TChain
7ccf0419 61 // DefineInput(0, TChain::Class());
10eaad41 62 DefineOutput(1, TList::Class());
63}
64
65//________________________________________________________________________
92adf4f6 66void AliAnalysisKinkESDMC::UserCreateOutputObjects()
10eaad41 67{
68 // Create histograms
69 // Called once
70
71 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);
72 f1->SetParameter(0,0.493677);
73 f1->SetParameter(1,0.9127037);
74 f1->SetParameter(2,TMath::Pi());
75
76
77 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);
78 f2->SetParameter(0,0.13957018);
79 f2->SetParameter(1,0.2731374);
80 f2->SetParameter(2,TMath::Pi());
81 //Open file 1= CAF
82 //OpenFile(1);
83
92adf4f6 84 fHistPtESD = new TH1F("fHistPtESD", "P_{T} distribution",100, 0.0,10.0);
10eaad41 85 fHistPtESD->GetXaxis()->SetTitle("P_{T} (GeV/c)");
86 fHistPtESD->GetYaxis()->SetTitle("dN/dP_{T} (c/GeV)");
87 fHistPtESD->SetMarkerStyle(kFullCircle);
92adf4f6 88 fHistPt = new TH1F("fHistPt", "P_{T} distribution",100, 0.0,10.0);
10eaad41 89 fHistQtAll = new TH1F("fHistQtAll", "Q_{T} distr All Kinks ",100, 0.0,.250);
90 fHistQt1= new TH1F("fHistQt1", "Q_{T} distribution",100, 0.0,.300);
91 fHistQt2= new TH1F("fHistQt2", "Q_{T} distribution",100, 0.0,.300);
92adf4f6 92 fHistPtKaon = new TH1F("fHistPtKaon", "P_{T}Kaon distribution",100, 0.0,10.0);
93 fHistPtKPDG = new TH1F("fHistPtKPDG", "P_{T}Kaon distribution",100, 0.0,10.0);
10eaad41 94 fHistEta= new TH1F("fHistEta", "Eta distribution", 26,-1.3, 1.3);
95 fHistEtaK= new TH1F("fHistEtaK", "EtaK distribution", 26,-1.3, 1.3);
92adf4f6 96 fptKMC= new TH1F("fptKMC", "P_{T}Kaon generated",100, 0.0,10.0);
97 fMultiplMC= new TH1F("fMultiplMC", "charge multiplicity MC",60, 0.5,120.5);
10eaad41 98 fESDMult= new TH1F("fESDMult", "charge multipliESD", 60, 0.5,120.5);
92adf4f6 99 fgenpt= new TH1F("fgenpt", "genpt K distribution",100, 0.0,10.0);
10eaad41 100 frad= new TH1F("frad", "radius K generated",100,0.,400.);
92adf4f6 101 fKinkKaon= new TH1F("fKinkKaon", "P_{T}Kaon kinks identi",100, 0.0,10.0);
102 fKinkKaonBg= new TH1F("fKinkKaonBg", "P_{T}Kaon kinks backgr",100, 0.0,10.0);
10eaad41 103 fM1kaon= new TH1F("fM1kaon","Invar m(kaon) from kink->mu+netrino decay",80,0.0, 0.8);
92adf4f6 104 fgenPtEtR= new TH1F("fgenPtEtR", "P_{T}Kaon distribution",100, 0.0,10.0);
105 fPtKink= new TH1F("fPtKink", "P_{T}Kaon Kink bution",100, 0.0,10.0);
106 fptKink= new TH1F("fptKink", "P_{T}Kaon Kink bution",100, 0.0,10.0);
10eaad41 107 fcodeH = new TH2F("fcodeH", "code vrs dcode dist. kinks,K",100,0.,2500.,100,0.,2500.);
108 fdcodeH = new TH2F("fdcodeH", "code vrs dcode dist. kinks,K",100,0.,2500.,100,0.,2500.);
109 fAngMomK= new TH2F("fAngMomK","Decay angle vrs Mother Mom,K",100,0.0,5.0,80,0.,80.);
110 fAngMomPi= new TH2F("fAngMomPi","Decay angle vrs Mother Mom,Pi",100,0.0,5.0,80,0.,80.);
92adf4f6 111 fAngMomKC= new TH2F("fAngMomKC","Decay angle vrs Mother Mom,K",100,0.0,5.0,80,0.,80.);
112 fMultESDK=new TH1F("fMultESDK", "charge multipliESD kaons", 60, 0.5,240.5);
113 fMultMCK=new TH1F("fMultMCK", "charge multipli MC kaons",100, 0.5,600.5);
10eaad41 114 fRpr = new TH1D("fRpr", "rad distribution PID pr",50,0.0, 2.5);
115 fZpr = new TH1D("fZpr", "z distribution PID pr ",60,-15.,15.);
10eaad41 116 fZvXv= new TH2F("fZvXv","Xv-Zv main vtx",60,-0.5,0.5,60, -15., 15.0);
117 fZvYv= new TH2F("fZvYv","Yv-Zv main vtx",60,-0.5,0.5, 60, -15., 15.);
118 fXvYv= new TH2F("fXvYv","Xv-Yv main vtx", 60,-1.5,1.5, 60, -1.5, 1.5);
92adf4f6 119 fPtPrKink=new TH1F("fPtPrKink","pt of ESD kaonKink tracks",100, 0.0,10.0);
10eaad41 120
121 fListOfHistos=new TList();
122
123 fListOfHistos->Add(fHistPtESD);
124 fListOfHistos->Add(fHistPt);
125 fListOfHistos->Add(fHistQtAll);
126 fListOfHistos->Add(fHistQt1);
127 fListOfHistos->Add(fHistQt2);
128 fListOfHistos->Add(fHistPtKaon);
129 fListOfHistos->Add(fHistPtKPDG);
130 fListOfHistos->Add(fHistEta);
131 fListOfHistos->Add(fHistEtaK);
132 fListOfHistos->Add(fptKMC);
133 fListOfHistos->Add(fMultiplMC);
134 fListOfHistos->Add(fESDMult);
135 fListOfHistos->Add(fgenpt);
136 fListOfHistos->Add(frad);
137 fListOfHistos->Add(fKinkKaon);
138 fListOfHistos->Add(fKinkKaonBg);
139 fListOfHistos->Add(fM1kaon);
140 fListOfHistos->Add(fgenPtEtR);
141 fListOfHistos->Add(fPtKink);
142 fListOfHistos->Add(fptKink);
143 fListOfHistos->Add(fcodeH);
144 fListOfHistos->Add(fdcodeH);
10eaad41 145 fListOfHistos->Add(fAngMomK);
146 fListOfHistos->Add(fAngMomPi);
92adf4f6 147 fListOfHistos->Add(fAngMomKC);
148 fListOfHistos->Add(fMultESDK);
149 fListOfHistos->Add(fMultMCK);
10eaad41 150 fListOfHistos->Add(fRpr);
151 fListOfHistos->Add(fZpr);
10eaad41 152 fListOfHistos->Add(fZvXv);
153 fListOfHistos->Add(fZvYv);
154 fListOfHistos->Add(fXvYv);
155 fListOfHistos->Add(fPtPrKink);
156}
157
158//________________________________________________________________________
92adf4f6 159void AliAnalysisKinkESDMC::UserExec(Option_t *)
10eaad41 160{
161 // Main loop
162 // Called for each event
163
164 // Process MC truth, therefore we receive the AliAnalysisManager and ask it for the AliMCEventHandler
165 // This handler can return the current MC event
92adf4f6 166
167 AliVEvent *event = InputEvent();
168 if (!event) {
169 Printf("ERROR: Could not retrieve event");
170 return;
171 }
172
173 AliESDEvent* esd = dynamic_cast<AliESDEvent*>(event);
174 if (!esd) {
175 Printf("ERROR: Could not retrieve esd");
176 return;
10eaad41 177 }
178
92adf4f6 179 AliMCEvent* mcEvent = MCEvent();
10eaad41 180 if (!mcEvent) {
181 Printf("ERROR: Could not retrieve MC event");
182 return;
183 }
184
7ccf0419 185 Printf("MC particles: %d", mcEvent->GetNumberOfTracks());
10eaad41 186
10eaad41 187 AliStack* stack=mcEvent->Stack();
188
189//primary tracks in MC
190 Int_t nPrim = stack->GetNprimary();
191//
92adf4f6 192 const AliESDVertex *vertex=GetEventVertex(esd);
10eaad41 193 if(!vertex) return;
194//
195 Double_t vpos[3];
196 vertex->GetXYZ(vpos);
197 fZpr->Fill(vpos[2]);
10eaad41 198
199 Double_t vtrack[3], ptrack[3];
200
201
92adf4f6 202 // Int_t nESDTracK = 0;
10eaad41 203
92adf4f6 204 Int_t nGoodTracks = esd->GetNumberOfTracks();
10eaad41 205 fESDMult->Fill(nGoodTracks);
92adf4f6 206
10eaad41 207//
208// track loop
92adf4f6 209 for (Int_t iTracks = 0; iTracks < esd->GetNumberOfTracks(); iTracks++) {
210// loop only on primary tracks
211
212 AliESDtrack* track = esd->GetTrack(iTracks);
10eaad41 213 if (!track) {
7ccf0419 214 Printf("ERROR: Could not receive track %d", iTracks);
10eaad41 215 continue;
216 }
217
218
219 fHistPt->Fill(track->Pt());
220
92adf4f6 221
222 Int_t label = track->GetLabel();
223 label = TMath::Abs(label);
224 TParticle * part = stack->Particle(label);
225 if (!part) continue;
226// loop only on Primary tracks
7ccf0419 227 if (label > nPrim) continue; /// primary tracks only , 26/8/09 EFF study
92adf4f6 228
7ccf0419 229 // pt cut at 300 MeV
10eaad41 230 if ( (track->Pt())<.300)continue;
231
92adf4f6 232// UInt_t status=track->GetStatus();
10eaad41 233
234 // if((status&AliESDtrack::kITSrefit)==0) continue;
92adf4f6 235 // if((status&AliESDtrack::kTPCrefit)==0) continue;
236 // ayksanei to ratio BG/real if((track->GetTPCchi2()/track->GetTPCclusters(0))>4.5) continue;
237 if((track->GetTPCchi2()/track->GetTPCclusters(0))>4.5) continue;
10eaad41 238
239 Double_t extCovPos[15];
240 track->GetExternalCovariance(extCovPos);
92adf4f6 241 // if(extCovPos[0]>2) continue;
242 // if(extCovPos[2]>2) continue;
243 // if(extCovPos[5]>0.5) continue;
244 // if(extCovPos[9]>0.5) continue;
245 // if(extCovPos[14]>2) continue;
10eaad41 246
247
248 track->GetXYZ(vtrack);
249 fXvYv->Fill(vtrack[0],vtrack[1]);
92adf4f6 250 fZvYv->Fill(vtrack[0],vtrack[2]);
251 fZvXv->Fill(vtrack[1],vtrack[2]);
10eaad41 252
253// track momentum
254 track->GetPxPyPz(ptrack);
255
256 TVector3 trackMom(ptrack[0],ptrack[1],ptrack[2]);
257
258 Double_t trackEta=trackMom.Eta();
259
260
261
262 Float_t nSigmaToVertex = GetSigmaToVertex(track);
263
264 Float_t bpos[2];
265 Float_t bCovpos[3];
266 track->GetImpactParameters(bpos,bCovpos);
267
268 if (bCovpos[0]<=0 || bCovpos[2]<=0) {
7ccf0419 269 Printf("Estimated b resolution lower or equal zero!");
10eaad41 270 bCovpos[0]=0; bCovpos[2]=0;
271 }
272
273 Float_t dcaToVertexXYpos = bpos[0];
274 Float_t dcaToVertexZpos = bpos[1];
275
276 fRpr->Fill(dcaToVertexZpos);
92adf4f6 277// test for secondary kinks , 5/7/2009
10eaad41 278 if(nSigmaToVertex>=4) continue;
92adf4f6 279 // if((dcaToVertexXYpos>3.0)||(dcaToVertexZpos>3.0)) continue; //arxiko
7ccf0419 280 if((dcaToVertexXYpos>4.0)||(dcaToVertexZpos>5.0)) continue; // 27/8
10eaad41 281
10eaad41 282
283 // cut on eta
92adf4f6 284 if( (TMath::Abs(trackEta )) > 0.9 ) continue;
10eaad41 285 fHistPtESD->Fill(track->Pt());
286
287 // Add Kink analysis
288
289 Int_t indexKinkPos=track->GetKinkIndex(0);
290// loop on kinks
291 if(indexKinkPos<0){
292 fPtKink->Fill(track->Pt()); /// pt from track
293
294 // select kink class
295
92adf4f6 296 AliESDkink *kink=esd->GetKink(TMath::Abs(indexKinkPos)-1);
10eaad41 297//
298
299 Int_t eSDfLabel1=kink->GetLabel(0);
300 TParticle *particle1= stack->Particle(TMath::Abs(eSDfLabel1));
301 Int_t code1= particle1->GetPdgCode();
302
303 Int_t eSDfLabeld=kink->GetLabel(1);
304 TParticle *particled= stack->Particle(TMath::Abs(eSDfLabeld));
305 Int_t dcode1= particled->GetPdgCode();
306
307 const TVector3 motherMfromKink(kink->GetMotherP());
308 const TVector3 daughterMKink(kink->GetDaughterP());
309 Float_t qT=kink->GetQt();
310
10eaad41 311 fHistQtAll->Fill(qT) ; // Qt distr
312
313 fptKink->Fill(motherMfromKink.Pt()); /// pt from kink
314
92adf4f6 315 Float_t kinkAngle=TMath::RadToDeg()*kink->GetAngle(2);
316
10eaad41 317// fake kinks, small Qt and small kink angle
92adf4f6 318 if(( kinkAngle<1.)&&(TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==13)) fHistQt1 ->Fill(qT) ; // Qt distr
7ccf0419 319
10eaad41 320 if(qT<0.012) continue; // remove fake kinks
321
10eaad41 322//remove the double taracks
7ccf0419 323 if( (kinkAngle<1.) ) continue;
324
10eaad41 325//
10eaad41 326
92adf4f6 327 if((kink->GetR()>120.)&&(kink->GetR()<220.)&&(TMath::Abs(trackEta)<0.9)&&(label<nPrim)) {
328 if( ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==13))||
329 ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==11)) ||
330 ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==211)) ) {
331 fHistPtKPDG->Fill(track->Pt()); // ALL KAONS (pdg) inside ESD kink sample
332 fHistEta->Fill(trackEta) ; // Eta distr of PDG kink ESD kaons
333 fMultESDK->Fill(nGoodTracks);
7ccf0419 334 fHistQt2->Fill(qT); // PDG ESD kaons
92adf4f6 335 }
336 }
10eaad41 337
338// maximum decay angle at a given mother momentum
339 Double_t maxDecAngKmu=f1->Eval(motherMfromKink.Mag(),0.,0.,0.);
340 Double_t maxDecAngpimu=f2->Eval(motherMfromKink.Mag(),0.,0.,0.);
341// two dimensional plot
342 if(TMath::Abs(code1)==321) fAngMomK->Fill(motherMfromKink.Mag(), kinkAngle);
343 if(TMath::Abs(code1)==211) fAngMomPi->Fill(motherMfromKink.Mag(), kinkAngle);
344//
345// invariant mass of mother track decaying to mu
346 Float_t energyDaughterMu=TMath::Sqrt(daughterMKink.Mag()*daughterMKink.Mag()+0.105658*0.105658);
347 Float_t p1XM= motherMfromKink.Px();
348 Float_t p1YM= motherMfromKink.Py();
349 Float_t p1ZM= motherMfromKink.Pz();
350 Float_t p2XM= daughterMKink.Px();
351 Float_t p2YM= daughterMKink.Py();
352 Float_t p2ZM= daughterMKink.Pz();
353 Float_t p3Daughter=TMath::Sqrt(((p1XM-p2XM)*(p1XM-p2XM))+((p1YM-p2YM)*(p1YM-p2YM))+((p1ZM-p2ZM)*(p1ZM-p2ZM)));
354 Double_t invariantMassKmu= TMath::Sqrt((energyDaughterMu+p3Daughter)*(energyDaughterMu+p3Daughter)-motherMfromKink.Mag()*motherMfromKink.Mag());
355
356 fM1kaon->Fill(invariantMassKmu);
357
358// kaon selection from kinks
7ccf0419 359//if((kinkAngle>maxDecAngpimu)&&(qT>0.05)&&(qT<0.25)&&((kink->GetR()>120.)&&(kink->GetR()<220.))&&(TMath::Abs(trackEta)<0.9)&&(invariantMassKmu<0.6)) {
360if((kinkAngle>maxDecAngpimu)&&(qT>0.04)&&(qT<0.30)&&((kink->GetR()>120.)&&(kink->GetR()<220.))&&(TMath::Abs(trackEta)<0.9)&&(invariantMassKmu<0.6)) {
361
362 if( (kinkAngle>maxDecAngKmu*1.1) && ( motherMfromKink.Mag()> 1.2 ) ) fcodeH->Fill(TMath::Abs(code1), TMath::Abs(dcode1));
363 if ( (kinkAngle>maxDecAngKmu*1.1) && ( motherMfromKink.Mag()> 1.2 ) ) fAngMomKC->Fill(motherMfromKink.Mag(), kinkAngle);
10eaad41 364
10eaad41 365
7ccf0419 366 if ( (kinkAngle>maxDecAngKmu*1.1) && ( motherMfromKink.Mag()> 1.2 ) ) continue; // maximum angle selection revised 22/10/2009
10eaad41 367
368 fHistPtKaon->Fill(track->Pt()); //all PID kink-kaon
369
92adf4f6 370// kaons from k to mun and k to pipi and to e decay
371 if( ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==13))||
372 ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==11)) ||
373 ( (TMath::Abs(code1)==321)&&(TMath::Abs(dcode1)==211)) ) {
10eaad41 374
7ccf0419 375 if ( label<=nPrim ) fPtPrKink->Fill(track->Pt());
92adf4f6 376 fKinkKaon->Fill(track->Pt());
377 fHistEtaK->Fill(trackEta);
378 }
10eaad41 379 else {
380 fKinkKaonBg->Fill(track->Pt());
7ccf0419 381 fdcodeH->Fill( TMath::Abs(code1), TMath::Abs(dcode1)); // put it here, 22/10/2009
382 } // primary and all +BG
10eaad41 383
384 } // kink selection
385
386
387 } //End Kink Information
388
389
390 } //track loop
391
392 // loop over mc particles
393
394 // variable to count tracks
395 Int_t nMCTracks = 0;
92adf4f6 396 Int_t nMCKinkKs = 0;
10eaad41 397
92adf4f6 398for (Int_t iMc = 0; iMc < nPrim; iMc++)
10eaad41 399 {
400 // AliDebug(AliLog::kDebug+1, Form("MC Loop: Processing particle %d.", iMc));
401
402 TParticle* particle = stack->Particle(iMc);
403
404 if (!particle)
405 {
406 // AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (mc loop).", iMc));
407 continue;
408 }
409
410 //
411 Float_t eta = particle->Eta();
412
92adf4f6 413 if (TMath::Abs(eta) > 0.9)
10eaad41 414 continue;
415
416 Double_t ptK = particle->Pt();
417
418 if( ptK <0.300) continue;
419
04c3c355 420 Int_t code = particle->GetPdgCode();
92adf4f6 421 Int_t mcProcess=-1011;
422 if ((code==321)||(code==-321)){
10eaad41 423
92adf4f6 424
10eaad41 425 fptKMC->Fill(ptK);
92adf4f6 426
10eaad41 427
92adf4f6 428 // fMultiplMC->Fill(nPrim);
7ccf0419 429 Int_t nMCKpi =0;
10eaad41 430
431 Int_t firstD=particle->GetFirstDaughter();
432 Int_t lastD=particle->GetLastDaughter();
433//loop on secondaries
7ccf0419 434 for (Int_t k=firstD;k<=lastD;k++) {
435 if ( k > 0 ) {
436 TParticle* daughter1=stack->Particle(k); // 27/8
04c3c355 437 Int_t dcode = daughter1->GetPdgCode();
10eaad41 438
92adf4f6 439 mcProcess=daughter1->GetUniqueID();
440 if (mcProcess==4) {
10eaad41 441
442
92adf4f6 443 // frad->Fill(daughter1->R());
10eaad41 444
92adf4f6 445 if (((daughter1->R())>120)&&((daughter1->R())<220) ){
10eaad41 446 if (( ( code==321 )&& ( dcode ==-13 ))|| (( code == -321 )&& ( dcode == 13))) fgenPtEtR->Fill( ptK );//to muon
7ccf0419 447 // if (( ( code==321 )&& ( dcode ==211 ))|| (( code == -321 )&& ( dcode ==-211))) fgenPtEtR->Fill( ptK );//to pion
92adf4f6 448 if (( ( code==321 )&& ( dcode ==-11 ))|| (( code == -321 )&& ( dcode ==11))) fgenPtEtR->Fill( ptK );// to electr
7ccf0419 449 if (( ( code==321 )&& ( dcode ==211 ))|| (( code == -321 )&& ( dcode ==-211))) nMCKpi++ ;
450
92adf4f6 451 //fMultMCK->Fill(nPrim);
452 frad->Fill(daughter1->R());
453 nMCKinkKs++;
10eaad41 454 }
455// next only to mu decay
456 if (((code==321)&&(dcode==-13))||((code==-321)&&(dcode==13))){
457
458
92adf4f6 459 if (((daughter1->R())>120)&&((daughter1->R())<220)){
7ccf0419 460 // fgenpt->Fill(ptK);
10eaad41 461 }
462 }
92adf4f6 463 }// decay
7ccf0419 464 } // positive k
92adf4f6 465 }// daughters
7ccf0419 466 if( nMCKpi == 1) fgenPtEtR->Fill(ptK); // k to pipi
467 if( nMCKpi > 1) fgenpt->Fill(ptK);// k to pipipi
10eaad41 468
92adf4f6 469 } /// kaons
10eaad41 470
471
472
473 nMCTracks++;
474 }// end of mc particle
475
476// printf("hello mc");
477 fMultiplMC->Fill(nMCTracks);
92adf4f6 478 if( nMCKinkKs>0) fMultMCK->Fill(nPrim);
10eaad41 479
480 PostData(1, fListOfHistos);
481
482}
483
484//________________________________________________________________________
485void AliAnalysisKinkESDMC::Terminate(Option_t *)
486{
487 // Draw result to the screen
488 // Called once at the end of the query
489
490}
491//____________________________________________________________________//
492
493Float_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
521const 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}