1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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14 **************************************************************************/
16 //_________________________________________________________________________
17 // Class containing methods for the isolation cut.
18 // An AOD candidate (AliAODPWG4ParticleCorrelation type)
19 // is passed. Look in a cone around the candidate and study
20 // the hadronic activity inside to decide if the candidate is isolated
23 //*-- Author: Gustavo Conesa (LNF-INFN)
25 //-Yaxian Mao (add the possibility for different IC method with different pt range, 01/10/2010)
26 //-Yaxian Mao (check the candidate particle is the leading particle or not at the same hemishere)
28 //////////////////////////////////////////////////////////////////////////////
31 // --- ROOT system ---
32 #include <TLorentzVector.h>
33 #include <TObjArray.h>
35 // --- AliRoot system ---
36 #include "AliIsolationCut.h"
37 #include "AliAODPWG4ParticleCorrelation.h"
38 #include "AliEMCALGeometry.h"
39 #include "AliEMCALGeoParams.h"
40 #include "AliCalorimeterUtils.h"
41 #include "AliAODTrack.h"
42 #include "AliVCluster.h"
43 #include "AliCaloTrackReader.h"
44 #include "AliMixedEvent.h"
45 #include "AliCaloPID.h"
47 ClassImp(AliIsolationCut)
49 //____________________________________
50 AliIsolationCut::AliIsolationCut() :
54 fPtThresholdMax(10000.),
64 //Initialize parameters
69 //_________________________________________________________________________________________________________________________________
70 void AliIsolationCut::CalculateUEBandClusterNormalization(AliCaloTrackReader * /*reader*/, Float_t etaC, Float_t /*phiC*/,
71 Float_t phiUEptsumCluster, Float_t etaUEptsumCluster,
72 Float_t & phiUEptsumClusterNorm, Float_t & etaUEptsumClusterNorm,
73 Float_t & excessFracEta, Float_t & excessFracPhi ) const
75 // Normalize cluster background band
77 Float_t coneA = fConeSize*fConeSize*TMath::Pi(); // A = pi R^2, isolation cone area
79 //Careful here if EMCal limits changed .. 2010 (4 SM) to 2011-12 (10 SM), for the moment consider 100 deg in phi
80 Float_t emcEtaSize = 0.7*2; // TO FIX
81 Float_t emcPhiSize = TMath::DegToRad()*100.; // TO FIX
84 if(((((2*fConeSize*emcPhiSize)-coneA))*phiBandBadCellsCoeff)!=0)phiUEptsumClusterNorm = phiUEptsumCluster*(coneA*coneBadCellsCoeff / (((2*fConeSize*emcPhiSize)-coneA))*phiBandBadCellsCoeff); // pi * R^2 / (2 R * 2 100 deg) - trigger cone
85 if(((((2*(fConeSize-excess)*emcPhiSize)-(coneA-excessFracEta))*etaBandBadCellsCoeff))!=0)phiUEptsumClusterNorm = phiUEptsumCluster*(coneA *coneBadCellsCoeff/ (((2*(fConeSize-excess)*emcPhiSize)-(coneA/excessFracEta))*etaBandBadCellsCoeff));
86 if(((2*(fConeSize-excess)*emcEtaSize)-(coneA-excessFracPhi))*phiBandBadCellsCoeff!=0) etaUEptsumClusterNorm = etaUEptsumCluster*(coneA*coneBadCellsCoeff / (((2*(fConeSize-excess)*emcEtaSize)-(coneA/excessFracPhi))*phiBandBadCellsCoeff));
89 if((2*fConeSize*emcPhiSize-coneA)!=0) phiUEptsumClusterNorm = phiUEptsumCluster*(coneA / (((2*fConeSize*emcPhiSize)-coneA))); // pi * R^2 / (2 R * 2 100 deg) - trigger cone
90 if((2*fConeSize*emcEtaSize-coneA)!=0) etaUEptsumClusterNorm = etaUEptsumCluster*(coneA / (((2*fConeSize*emcEtaSize)-coneA))); // pi * R^2 / (2 R * 2*0.7) - trigger cone
92 //out of eta acceptance
96 if(TMath::Abs(etaC)+fConeSize > emcEtaSize/2.)
98 Float_t excess = TMath::Abs(etaC) + fConeSize - emcEtaSize/2.;
99 excessFracEta = CalculateExcessAreaFraction(excess);
101 if ( excessFracEta != 0) coneA /= excessFracEta;
103 //UE band is also out of acceptance, need to estimate corrected area
104 if(((2*fConeSize-excess)*emcPhiSize-coneA) != 0 ) phiUEptsumClusterNorm = phiUEptsumCluster*(coneA / ((((2*fConeSize-excess)*emcPhiSize)-coneA)));
105 if(( 2*fConeSize *emcEtaSize-coneA) != 0 ) etaUEptsumClusterNorm = etaUEptsumCluster*(coneA / ((( 2*fConeSize *emcEtaSize)-coneA)));
110 //________________________________________________________________________________________________________________________________
111 void AliIsolationCut::CalculateUEBandTrackNormalization (AliCaloTrackReader * reader, Float_t etaC, Float_t /*phiC*/,
112 Float_t phiUEptsumTrack, Float_t etaUEptsumTrack,
113 Float_t & phiUEptsumTrackNorm, Float_t & etaUEptsumTrackNorm,
114 Float_t & excessFracEta, Float_t & excessFracPhi ) const
116 // Normalize track background band
118 Float_t coneA = fConeSize*fConeSize*TMath::Pi(); // A = pi R^2, isolation cone area
120 // Get the cut used for the TPC tracks in the reader, +-0.8, +-0.9 ...
121 // Only valid in simple fidutial cut case and if the cut is applied, careful!
122 Float_t tpcEtaSize = reader->GetFiducialCut()->GetCTSFidCutMaxEtaArray()->At(0) -
123 reader->GetFiducialCut()->GetCTSFidCutMinEtaArray()->At(0) ;
124 Float_t tpcPhiSize = TMath::TwoPi();
127 //phiUEptsumTrackNorm = phiUEptsumTrack*(coneA*coneBadCellsCoeff / (((2*fConeSize*tpcPhiSize)-coneA))*phiBandBadCellsCoeff); // pi * R^2 / (2 R * 2 pi) - trigger cone
128 //etaUEptsumTrackNorm = etaUEptsumTrack*(coneA*coneBadCellsCoeff / (((2*fConeSize*tpcEtaSize)-coneA))*etaBandBadCellsCoeff); // pi * R^2 / (2 R * 1.6) - trigger cone
129 if((2*fConeSize*tpcPhiSize-coneA)!=0)phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / (((2*fConeSize*tpcPhiSize)-coneA))); // pi * R^2 / (2 R * 2 pi) - trigger cone
130 if((2*fConeSize*tpcEtaSize-coneA)!=0)etaUEptsumTrackNorm = etaUEptsumTrack*(coneA / (((2*fConeSize*tpcEtaSize)-coneA))); // pi * R^2 / (2 R * 1.6) - trigger cone
131 if((2*(fConeSize-excess)*tpcPhiSize)-(coneA-excessFracEta)!=0)phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / (((2*(fConeSize-excess)*tpcPhiSize)-(coneA/excessFracEta))));
132 */ //end Catherine code
134 //correct out of eta acceptance
138 if((2*fConeSize*tpcPhiSize-coneA)!=0) phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / (((2*fConeSize*tpcPhiSize)-coneA))); // pi * R^2 / (2 R * 2 pi) - trigger cone
139 if((2*fConeSize*tpcEtaSize-coneA)!=0) etaUEptsumTrackNorm = etaUEptsumTrack*(coneA / (((2*fConeSize*tpcEtaSize)-coneA))); // pi * R^2 / (2 R * 1.6) - trigger cone
141 if(TMath::Abs(etaC)+fConeSize > tpcEtaSize/2.)
143 Float_t excess = TMath::Abs(etaC) + fConeSize - tpcEtaSize/2.;
144 excessFracEta = CalculateExcessAreaFraction(excess);
145 if (excessFracEta != 0) coneA /= excessFracEta;
147 //UE band is also out of acceptance, need to estimate corrected area
148 if(((2*fConeSize-excess)*tpcPhiSize - coneA) !=0 ) phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / ((((2*fConeSize-excess)*tpcPhiSize)-coneA)));
149 if(( 2*fConeSize *tpcEtaSize - coneA) !=0 ) etaUEptsumTrackNorm = etaUEptsumTrack*(coneA / ((( 2*fConeSize *tpcEtaSize)-coneA)));
154 //________________________________________________________________________
155 Float_t AliIsolationCut::CalculateExcessAreaFraction(Float_t excess) const
157 // Area of a circunference segment segment 1/2 R^2 (angle-sin(angle)), angle = 2*ACos((R-excess)/R)
160 Float_t angle = 2*TMath::ACos( (fConeSize-excess) / fConeSize );
162 Float_t coneA = fConeSize*fConeSize*TMath::Pi(); // A = pi R^2, isolation cone area
164 Float_t excessA = fConeSize*fConeSize / 2 * (angle-TMath::Sin(angle));
166 if(coneA > excessA) return coneA / (coneA-excessA);
169 printf("AliIsolationCut::CalculateExcessAreaFraction() - Please Check : Excess Track %2.3f, coneA %2.2f, excessA %2.2f, angle %2.2f,factor %2.2f\n",
170 excess,coneA, excessA, angle*TMath::RadToDeg(), coneA / (coneA-excessA));
175 //_______________________________________________________________________________________
176 Float_t AliIsolationCut::GetCellDensity(AliAODPWG4ParticleCorrelation * pCandidate,
177 AliCaloTrackReader * reader) const
179 // Get good cell density (number of active cells over all cells in cone)
181 Double_t coneCells = 0.; //number of cells in cone with radius fConeSize
182 Double_t coneCellsBad = 0.; //number of bad cells in cone with radius fConeSize
183 Double_t cellDensity = 1.;
185 Float_t phiC = pCandidate->Phi() ;
186 if(phiC<0) phiC+=TMath::TwoPi();
187 Float_t etaC = pCandidate->Eta() ;
189 if(pCandidate->GetDetector()=="EMCAL")
191 AliEMCALGeometry* eGeom = AliEMCALGeometry::GetInstance();
192 AliCalorimeterUtils *cu = reader->GetCaloUtils();
195 if (eGeom->GetAbsCellIdFromEtaPhi(etaC,phiC,absId))
197 //Get absolute (col,row) of candidate
198 Int_t iEta=-1, iPhi=-1, iRCU = -1;
199 Int_t nSupMod = cu->GetModuleNumberCellIndexes(absId, pCandidate->GetDetector(), iEta, iPhi, iRCU);
202 if (nSupMod % 2) colC = AliEMCALGeoParams::fgkEMCALCols + iEta ;
203 Int_t rowC = iPhi + AliEMCALGeoParams::fgkEMCALRows*int(nSupMod/2);
205 Int_t sqrSize = int(fConeSize/0.0143) ; // Size of cell in radians
206 //loop on cells in a square of side fConeSize to check cells in cone
207 for(Int_t icol = colC-sqrSize; icol < colC+sqrSize;icol++)
209 for(Int_t irow = rowC-sqrSize; irow < rowC+sqrSize; irow++)
211 if (Radius(colC, rowC, icol, irow) < sqrSize)
216 Int_t cellEta = -999;
217 Int_t cellPhi = -999;
218 if(icol > AliEMCALGeoParams::fgkEMCALCols-1)
220 cellSM = 0+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
221 cellEta = icol-AliEMCALGeoParams::fgkEMCALCols;
222 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
224 if(icol < AliEMCALGeoParams::fgkEMCALCols)
226 cellSM = 1+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
228 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
231 //Count as bad "cells" out of EMCAL acceptance
232 if(icol < 0 || icol > AliEMCALGeoParams::fgkEMCALCols*2 ||
233 irow < 0 || irow > AliEMCALGeoParams::fgkEMCALRows*16./3) //5*nRows+1/3*nRows
237 //Count as bad "cells" marked as bad in the DataBase
238 else if (cu->GetEMCALChannelStatus(cellSM,cellEta,cellPhi)==1)
247 else if(fDebug>0) printf("cluster with bad (eta,phi) in EMCal for energy density calculation\n");
251 cellDensity = (coneCells-coneCellsBad)/coneCells;
252 //printf("Energy density = %f\n", cellDensity);
260 //__________________________________________________________________________________
261 void AliIsolationCut::GetCoeffNormBadCell(AliAODPWG4ParticleCorrelation * pCandidate,
262 AliCaloTrackReader * reader,
263 Float_t & coneBadCellsCoeff,
264 Float_t & etaBandBadCellsCoeff,
265 Float_t & phiBandBadCellsCoeff)
267 // Get good cell density (number of active cells over all cells in cone)
269 Double_t coneCells = 0.; //number of cells in cone with radius fConeSize
270 Double_t phiBandCells = 0.; //number of cells in band phi
271 Double_t etaBandCells = 0.; //number of cells in band eta
273 Float_t phiC = pCandidate->Phi() ;
274 if(phiC<0) phiC+=TMath::TwoPi();
275 Float_t etaC = pCandidate->Eta() ;
277 if(pCandidate->GetDetector()=="EMCAL")
279 AliEMCALGeometry* eGeom = AliEMCALGeometry::GetInstance();
280 AliCalorimeterUtils *cu = reader->GetCaloUtils();
283 if (eGeom->GetAbsCellIdFromEtaPhi(etaC,phiC,absId))
285 //Get absolute (col,row) of candidate
286 Int_t iEta=-1, iPhi=-1, iRCU = -1;
287 Int_t nSupMod = cu->GetModuleNumberCellIndexes(absId, pCandidate->GetDetector(),
291 if (nSupMod % 2) colC = AliEMCALGeoParams::fgkEMCALCols + iEta ;
292 Int_t rowC = iPhi + AliEMCALGeoParams::fgkEMCALRows*int(nSupMod/2);
294 Int_t sqrSize = int(fConeSize/0.0143) ; // Size of cell in radians
295 for(Int_t icol = 0; icol < 2*AliEMCALGeoParams::fgkEMCALCols-1;icol++)
297 for(Int_t irow = 0; irow < 5*AliEMCALGeoParams::fgkEMCALRows -1; irow++)
299 //loop on cells in a square of side fConeSize to check cells in cone
300 if ( Radius(colC, rowC, icol, irow) < sqrSize ) { coneCells += 1.; }
301 else if( icol>colC-sqrSize && icol<colC+sqrSize ) { phiBandCells += 1 ; }
302 else if( irow>rowC-sqrSize && irow<rowC+sqrSize ) { etaBandCells += 1 ; }
305 Int_t cellEta = -999;
306 Int_t cellPhi = -999;
307 if(icol > AliEMCALGeoParams::fgkEMCALCols-1)
309 cellSM = 0+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
310 cellEta = icol-AliEMCALGeoParams::fgkEMCALCols;
311 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
313 if(icol < AliEMCALGeoParams::fgkEMCALCols)
315 cellSM = 1+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
317 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
320 if( (icol < 0 || icol > AliEMCALGeoParams::fgkEMCALCols*2-1 ||
321 irow < 0 || irow > AliEMCALGeoParams::fgkEMCALRows*5 - 1) //5*nRows+1/3*nRows //Count as bad "cells" out of EMCAL acceptance
322 || (cu->GetEMCALChannelStatus(cellSM,cellEta,cellPhi)==1)) //Count as bad "cells" marked as bad in the DataBase
324 if ( Radius(colC, rowC, icol, irow) < sqrSize ) coneBadCellsCoeff += 1.;
325 else if( icol>colC-sqrSize && icol<colC+sqrSize ) phiBandBadCellsCoeff += 1 ;
326 else if( irow>rowC-sqrSize && irow<rowC+sqrSize ) etaBandBadCellsCoeff += 1 ;
332 else if(fDebug > 0) printf("cluster with bad (eta,phi) in EMCal for energy density coeff calculation\n");
336 // printf("Energy density coneBadCellsCoeff= %.2f coneCells%.2f\n", coneBadCellsCoeff,coneCells);
337 coneBadCellsCoeff = (coneCells-coneBadCellsCoeff)/coneCells;
338 // printf("coneBadCellsCoeff= %.2f\n", coneBadCellsCoeff);
340 if (phiBandCells > 0.)
342 // printf("Energy density phiBandBadCellsCoeff = %.2f phiBandCells%.2f\n", phiBandBadCellsCoeff,phiBandCells);
343 phiBandBadCellsCoeff = (phiBandCells-phiBandBadCellsCoeff)/phiBandCells;
344 // printf("phiBandBadCellsCoeff = %.2f\n", phiBandBadCellsCoeff);
346 if (etaBandCells > 0.)
348 //printf("Energy density etaBandBadCellsCoeff = %.2f etaBandCells%.2f\n", etaBandBadCellsCoeff,etaBandCells);
349 etaBandBadCellsCoeff = (etaBandCells-etaBandBadCellsCoeff)/etaBandCells;
350 // printf("etaBandBadCellsCoeff = %.2f\n",etaBandBadCellsCoeff);
357 //____________________________________________
358 TString AliIsolationCut::GetICParametersList()
360 //Put data member values in string to keep in output container
362 TString parList ; //this will be list of parameters used for this analysis.
363 const Int_t buffersize = 255;
364 char onePar[buffersize] ;
366 snprintf(onePar,buffersize,"--- AliIsolationCut ---\n") ;
368 snprintf(onePar,buffersize,"fConeSize: (isolation cone size) %1.2f\n",fConeSize) ;
370 snprintf(onePar,buffersize,"fPtThreshold =%1.2f (isolation pt threshold) \n",fPtThreshold) ;
372 snprintf(onePar,buffersize,"fPtFraction=%1.2f (isolation pt threshold fraction ) \n",fPtFraction) ;
374 snprintf(onePar,buffersize,"fICMethod=%d (isolation cut case) \n",fICMethod) ;
376 snprintf(onePar,buffersize,"fPartInCone=%d \n",fPartInCone) ;
378 snprintf(onePar,buffersize,"fFracIsThresh=%i \n",fFracIsThresh) ;
384 //____________________________________
385 void AliIsolationCut::InitParameters()
387 //Initialize the parameters of the analysis.
391 fPtThresholdMax = 10000. ;
392 fSumPtThreshold = 0.5 ;
394 fPartInCone = kOnlyCharged;
395 fICMethod = kSumPtFracIC; // 0 pt threshol method, 1 cone pt sum method
399 //________________________________________________________________________________
400 void AliIsolationCut::MakeIsolationCut(TObjArray * plCTS,
402 AliCaloTrackReader * reader,
405 AliAODPWG4ParticleCorrelation *pCandidate,
406 TString aodArrayRefName,
410 Bool_t & isolated) const
412 //Search in cone around a candidate particle if it is isolated
413 Float_t ptC = pCandidate->Pt() ;
414 Float_t phiC = pCandidate->Phi() ;
415 if(phiC<0) phiC+=TMath::TwoPi();
416 Float_t etaC = pCandidate->Eta() ;
419 Float_t eta = -100. ;
420 Float_t phi = -100. ;
421 Float_t rad = -100. ;
423 Float_t coneptsumCluster = 0;
424 Float_t coneptsumTrack = 0;
426 Float_t etaBandPtSumTrack = 0;
427 Float_t phiBandPtSumTrack = 0;
428 Float_t etaBandPtSumCluster = 0;
429 Float_t phiBandPtSumCluster = 0;
437 printf("AliIsolationCut::MakeIsolationCut() - Cadidate pT %2.2f, eta %2.2f, phi %2.2f, cone %1.2f, thres %2.2f, Fill AOD? %d",
438 pCandidate->Pt(), pCandidate->Eta(), pCandidate->Phi()*TMath::RadToDeg(), fConeSize,fPtThreshold,bFillAOD);
439 if(plCTS) printf(", nTracks %d" ,plCTS->GetEntriesFast());
440 if(plNe) printf(", nClusters %d",plNe ->GetEntriesFast());
445 //Initialize the array with refrences
446 TObjArray * refclusters = 0x0;
447 TObjArray * reftracks = 0x0;
448 Int_t ntrackrefs = 0;
449 Int_t nclusterrefs = 0;
451 //Check charged particles in cone.
453 (fPartInCone==kOnlyCharged || fPartInCone==kNeutralAndCharged))
456 for(Int_t ipr = 0;ipr < plCTS->GetEntries() ; ipr ++ )
458 AliVTrack* track = dynamic_cast<AliVTrack*>(plCTS->At(ipr)) ;
462 //Do not count the candidate (pion, conversion photon) or the daughters of the candidate
463 if(track->GetID() == pCandidate->GetTrackLabel(0) || track->GetID() == pCandidate->GetTrackLabel(1) ||
464 track->GetID() == pCandidate->GetTrackLabel(2) || track->GetID() == pCandidate->GetTrackLabel(3) ) continue ;
466 p3.SetXYZ(track->Px(),track->Py(),track->Pz());
472 {// Mixed event stored in AliAODPWG4Particles
473 AliAODPWG4Particle * trackmix = dynamic_cast<AliAODPWG4Particle*>(plCTS->At(ipr)) ;
476 printf("AliIsolationCut::MakeIsolationCut() - Wrong track data type, continue\n");
481 eta = trackmix->Eta();
482 phi = trackmix->Phi() ;
485 if( phi < 0 ) phi+=TMath::TwoPi();
487 rad = Radius(etaC, phiC, eta, phi);
489 // ** For the background out of cone **
493 if(eta > (etaC-fConeSize) && eta < (etaC+fConeSize)) phiBandPtSumTrack += pt;
494 if(phi > (phiC-fConeSize) && phi < (phiC+fConeSize)) etaBandPtSumTrack += pt;
497 // ** For the isolated particle **
499 // Only loop the particle at the same side of candidate
500 if(TMath::Abs(phi-phiC) > TMath::PiOver2()) continue ;
502 // If at the same side has particle larger than candidate,
503 // then candidate can not be the leading, skip such events
511 pCandidate->SetLeadingParticle(kFALSE);
513 if(bFillAOD && reftracks)
522 //Check if there is any particle inside cone with pt larger than fPtThreshold
525 printf("\t track %d, pT %2.2f, eta %1.2f, phi %2.2f, R candidate %2.2f", ipr,pt,eta,phi,rad);
529 if(fDebug > 0) printf(" - inside candidate cone");
536 reftracks = new TObjArray(0);
537 //reftracks->SetName(Form("Tracks%s",aodArrayRefName.Data()));
538 TString tempo(aodArrayRefName) ;
540 reftracks->SetName(tempo);
541 reftracks->SetOwner(kFALSE);
543 reftracks->Add(track);
547 if(pt > fPtThreshold && pt < fPtThresholdMax) n++;
548 if(pt > fPtFraction*ptC ) nfrac++;
552 if(fDebug>0) printf("\n");
554 }// charged particle loop
560 //Check neutral particles in cone.
562 (fPartInCone==kOnlyNeutral || fPartInCone==kNeutralAndCharged))
566 for(Int_t ipr = 0;ipr < plNe->GetEntries() ; ipr ++ )
568 AliVCluster * calo = dynamic_cast<AliVCluster *>(plNe->At(ipr)) ;
572 //Get the index where the cluster comes, to retrieve the corresponding vertex
574 if (reader->GetMixedEvent())
575 evtIndex=reader->GetMixedEvent()->EventIndexForCaloCluster(calo->GetID()) ;
578 //Do not count the candidate (photon or pi0) or the daughters of the candidate
579 if(calo->GetID() == pCandidate->GetCaloLabel(0) ||
580 calo->GetID() == pCandidate->GetCaloLabel(1) ) continue ;
582 //Skip matched clusters with tracks in case of neutral+charged analysis
583 if( fPartInCone == kNeutralAndCharged &&
584 pid->IsTrackMatched(calo,reader->GetCaloUtils(),reader->GetInputEvent()) ) continue ;
586 //Assume that come from vertex in straight line
587 calo->GetMomentum(mom,reader->GetVertex(evtIndex)) ;
594 {// Mixed event stored in AliAODPWG4Particles
595 AliAODPWG4Particle * calomix = dynamic_cast<AliAODPWG4Particle*>(plNe->At(ipr)) ;
598 printf("AliIsolationCut::MakeIsolationCut() - Wrong calo data type, continue\n");
603 eta = calomix->Eta();
604 phi = calomix->Phi() ;
607 if( phi < 0 ) phi+=TMath::TwoPi();
609 rad = Radius(etaC, phiC, eta, phi);
611 // ** For the background out of cone **
615 if(eta > (etaC-fConeSize) && eta < (etaC+fConeSize)) phiBandPtSumCluster += pt;
616 if(phi > (phiC-fConeSize) && phi < (phiC+fConeSize)) etaBandPtSumCluster += pt;
619 // ** For the isolated particle **
621 // Only loop the particle at the same side of candidate
622 if(TMath::Abs(phi-phiC)>TMath::PiOver2()) continue ;
624 // If at the same side has particle larger than candidate,
625 // then candidate can not be the leading, skip such events
630 coneptsumCluster = -1;
633 pCandidate->SetLeadingParticle(kFALSE);
645 refclusters->Clear();
652 //Check if there is any particle inside cone with pt larger than fPtThreshold
655 printf("\t cluster %d, pT %2.2f, eta %1.2f, phi %2.2f, R candidate %2.2f", ipr,pt,eta,phi,rad);
659 if(fDebug > 0 ) printf(" - inside candidate cone");
666 refclusters = new TObjArray(0);
667 //refclusters->SetName(Form("Clusters%s",aodArrayRefName.Data()));
668 TString tempo(aodArrayRefName) ;
669 tempo += "Clusters" ;
670 refclusters->SetName(tempo);
671 refclusters->SetOwner(kFALSE);
673 refclusters->Add(calo);
676 coneptsumCluster+=pt;
677 if(pt > fPtThreshold && pt < fPtThresholdMax) n++;
678 //if fPtFraction*ptC<fPtThreshold then consider the fPtThreshold directly
681 if( fPtFraction*ptC<fPtThreshold)
683 if(pt>fPtThreshold) nfrac++ ;
687 if(pt>fPtFraction*ptC) nfrac++;
692 if(pt>fPtFraction*ptC) nfrac++;
697 if(fDebug>0) printf("\n");
699 }// neutral particle loop
704 //Add reference arrays to AOD when filling AODs only
707 if(refclusters) pCandidate->AddObjArray(refclusters);
708 if(reftracks) pCandidate->AddObjArray(reftracks);
711 coneptsum = coneptsumCluster+coneptsumTrack;
713 //Check isolation, depending on selected isolation criteria
714 if( fICMethod == kPtThresIC)
716 if(n==0) isolated = kTRUE ;
718 else if( fICMethod == kSumPtIC)
720 if(coneptsum < fSumPtThreshold)
723 else if( fICMethod == kPtFracIC)
725 if(nfrac==0) isolated = kTRUE ;
727 else if( fICMethod == kSumPtFracIC)
729 //when the fPtFraction*ptC < fSumPtThreshold then consider the later case
730 // printf("photon analysis IsDataMC() ?%i\n",IsDataMC());
733 if( fPtFraction*ptC < fSumPtThreshold && coneptsum < fSumPtThreshold) isolated = kTRUE ;
734 if( fPtFraction*ptC > fSumPtThreshold && coneptsum < fPtFraction*ptC) isolated = kTRUE ;
738 if(coneptsum < fPtFraction*ptC) isolated = kTRUE ;
741 else if( fICMethod == kSumDensityIC)
743 // Get good cell density (number of active cells over all cells in cone)
744 // and correct energy in cone
746 Float_t cellDensity = GetCellDensity(pCandidate,reader);
748 if(coneptsum < fSumPtThreshold*cellDensity)
751 else if( fICMethod == kSumBkgSubIC)
753 Double_t coneptsumBkg = 0.;
754 Float_t etaBandPtSumTrackNorm = 0;
755 Float_t phiBandPtSumTrackNorm = 0;
756 Float_t etaBandPtSumClusterNorm = 0;
757 Float_t phiBandPtSumClusterNorm = 0;
759 Float_t excessFracEtaTrack = 1;
760 Float_t excessFracPhiTrack = 1;
761 Float_t excessFracEtaCluster = 1;
762 Float_t excessFracPhiCluster = 1;
764 // Normalize background to cone area
765 if (fPartInCone != kOnlyCharged )
766 CalculateUEBandClusterNormalization(reader, etaC, phiC,
767 phiBandPtSumCluster , etaBandPtSumCluster,
768 phiBandPtSumClusterNorm, etaBandPtSumClusterNorm,
769 excessFracEtaCluster , excessFracPhiCluster );
770 if (fPartInCone != kOnlyNeutral )
771 CalculateUEBandTrackNormalization(reader, etaC, phiC,
772 phiBandPtSumTrack , etaBandPtSumTrack ,
773 phiBandPtSumTrackNorm, etaBandPtSumTrackNorm,
774 excessFracEtaTrack , excessFracPhiTrack );
776 if (fPartInCone == kOnlyCharged ) coneptsumBkg = etaBandPtSumTrackNorm;
777 else if(fPartInCone == kOnlyNeutral ) coneptsumBkg = etaBandPtSumClusterNorm;
778 else if(fPartInCone == kNeutralAndCharged ) coneptsumBkg = etaBandPtSumClusterNorm + etaBandPtSumTrackNorm;
780 //coneptsumCluster*=(coneBadCellsCoeff*excessFracEtaCluster*excessFracPhiCluster) ; // apply this correction earlier???
781 // line commented out in last modif!!!
783 coneptsum = coneptsumCluster+coneptsumTrack;
785 coneptsum -= coneptsumBkg;
786 if(coneptsum < fSumPtThreshold)
792 //_____________________________________________________
793 void AliIsolationCut::Print(const Option_t * opt) const
796 //Print some relevant parameters set for the analysis
800 printf("**** Print %s %s **** \n", GetName(), GetTitle() ) ;
802 printf("IC method = %d\n", fICMethod ) ;
803 printf("Cone Size = %1.2f\n", fConeSize ) ;
804 printf("pT threshold = %2.1f\n", fPtThreshold) ;
805 printf("pT fraction = %3.1f\n", fPtFraction ) ;
806 printf("particle type in cone = %d\n", fPartInCone ) ;
807 printf("using fraction for high pt leading instead of frac ? %i\n",fFracIsThresh);
812 //___________________________________________________________________________
813 Float_t AliIsolationCut::Radius(Float_t etaC, Float_t phiC,
814 Float_t eta , Float_t phi) const
816 // Calculate the distance to trigger from any particle
818 Float_t dEta = etaC-eta;
819 Float_t dPhi = phiC-phi;
821 if(TMath::Abs(dPhi) >= TMath::Pi())
822 dPhi = TMath::TwoPi()-TMath::Abs(dPhi);
824 return TMath::Sqrt( dEta*dEta + dPhi*dPhi );