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.),
56 fSumPtThresholdMax(10000.),
65 //Initialize parameters
70 //_________________________________________________________________________________________________________________________________
71 void AliIsolationCut::CalculateUEBandClusterNormalization(AliCaloTrackReader * /*reader*/, Float_t etaC, Float_t /*phiC*/,
72 Float_t phiUEptsumCluster, Float_t etaUEptsumCluster,
73 Float_t & phiUEptsumClusterNorm, Float_t & etaUEptsumClusterNorm,
74 Float_t & excessFracEta, Float_t & excessFracPhi ) const
76 // Normalize cluster background band
78 Float_t coneA = fConeSize*fConeSize*TMath::Pi(); // A = pi R^2, isolation cone area
80 //Careful here if EMCal limits changed .. 2010 (4 SM) to 2011-12 (10 SM), for the moment consider 100 deg in phi
81 Float_t emcEtaSize = 0.7*2; // TO FIX
82 Float_t emcPhiSize = TMath::DegToRad()*100.; // TO FIX
85 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
86 if(((((2*(fConeSize-excess)*emcPhiSize)-(coneA-excessFracEta))*etaBandBadCellsCoeff))!=0)phiUEptsumClusterNorm = phiUEptsumCluster*(coneA *coneBadCellsCoeff/ (((2*(fConeSize-excess)*emcPhiSize)-(coneA/excessFracEta))*etaBandBadCellsCoeff));
87 if(((2*(fConeSize-excess)*emcEtaSize)-(coneA-excessFracPhi))*phiBandBadCellsCoeff!=0) etaUEptsumClusterNorm = etaUEptsumCluster*(coneA*coneBadCellsCoeff / (((2*(fConeSize-excess)*emcEtaSize)-(coneA/excessFracPhi))*phiBandBadCellsCoeff));
90 if((2*fConeSize*emcPhiSize-coneA)!=0) phiUEptsumClusterNorm = phiUEptsumCluster*(coneA / (((2*fConeSize*emcPhiSize)-coneA))); // pi * R^2 / (2 R * 2 100 deg) - trigger cone
91 if((2*fConeSize*emcEtaSize-coneA)!=0) etaUEptsumClusterNorm = etaUEptsumCluster*(coneA / (((2*fConeSize*emcEtaSize)-coneA))); // pi * R^2 / (2 R * 2*0.7) - trigger cone
93 //out of eta acceptance
97 if(TMath::Abs(etaC)+fConeSize > emcEtaSize/2.)
99 Float_t excess = TMath::Abs(etaC) + fConeSize - emcEtaSize/2.;
100 excessFracEta = CalculateExcessAreaFraction(excess);
102 if ( excessFracEta != 0) coneA /= excessFracEta;
104 //UE band is also out of acceptance, need to estimate corrected area
105 if(((2*fConeSize-excess)*emcPhiSize-coneA) != 0 ) phiUEptsumClusterNorm = phiUEptsumCluster*(coneA / ((((2*fConeSize-excess)*emcPhiSize)-coneA)));
106 if(( 2*fConeSize *emcEtaSize-coneA) != 0 ) etaUEptsumClusterNorm = etaUEptsumCluster*(coneA / ((( 2*fConeSize *emcEtaSize)-coneA)));
111 //________________________________________________________________________________________________________________________________
112 void AliIsolationCut::CalculateUEBandTrackNormalization (AliCaloTrackReader * reader, Float_t etaC, Float_t /*phiC*/,
113 Float_t phiUEptsumTrack, Float_t etaUEptsumTrack,
114 Float_t & phiUEptsumTrackNorm, Float_t & etaUEptsumTrackNorm,
115 Float_t & excessFracEta, Float_t & excessFracPhi ) const
117 // Normalize track background band
119 Float_t coneA = fConeSize*fConeSize*TMath::Pi(); // A = pi R^2, isolation cone area
121 // Get the cut used for the TPC tracks in the reader, +-0.8, +-0.9 ...
122 // Only valid in simple fidutial cut case and if the cut is applied, careful!
123 Float_t tpcEtaSize = reader->GetFiducialCut()->GetCTSFidCutMaxEtaArray()->At(0) -
124 reader->GetFiducialCut()->GetCTSFidCutMinEtaArray()->At(0) ;
125 Float_t tpcPhiSize = TMath::TwoPi();
128 //phiUEptsumTrackNorm = phiUEptsumTrack*(coneA*coneBadCellsCoeff / (((2*fConeSize*tpcPhiSize)-coneA))*phiBandBadCellsCoeff); // pi * R^2 / (2 R * 2 pi) - trigger cone
129 //etaUEptsumTrackNorm = etaUEptsumTrack*(coneA*coneBadCellsCoeff / (((2*fConeSize*tpcEtaSize)-coneA))*etaBandBadCellsCoeff); // pi * R^2 / (2 R * 1.6) - trigger cone
130 if((2*fConeSize*tpcPhiSize-coneA)!=0)phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / (((2*fConeSize*tpcPhiSize)-coneA))); // pi * R^2 / (2 R * 2 pi) - trigger cone
131 if((2*fConeSize*tpcEtaSize-coneA)!=0)etaUEptsumTrackNorm = etaUEptsumTrack*(coneA / (((2*fConeSize*tpcEtaSize)-coneA))); // pi * R^2 / (2 R * 1.6) - trigger cone
132 if((2*(fConeSize-excess)*tpcPhiSize)-(coneA-excessFracEta)!=0)phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / (((2*(fConeSize-excess)*tpcPhiSize)-(coneA/excessFracEta))));
133 */ //end Catherine code
135 //correct out of eta acceptance
139 if((2*fConeSize*tpcPhiSize-coneA)!=0) phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / (((2*fConeSize*tpcPhiSize)-coneA))); // pi * R^2 / (2 R * 2 pi) - trigger cone
140 if((2*fConeSize*tpcEtaSize-coneA)!=0) etaUEptsumTrackNorm = etaUEptsumTrack*(coneA / (((2*fConeSize*tpcEtaSize)-coneA))); // pi * R^2 / (2 R * 1.6) - trigger cone
142 if(TMath::Abs(etaC)+fConeSize > tpcEtaSize/2.)
144 Float_t excess = TMath::Abs(etaC) + fConeSize - tpcEtaSize/2.;
145 excessFracEta = CalculateExcessAreaFraction(excess);
146 if (excessFracEta != 0) coneA /= excessFracEta;
148 //UE band is also out of acceptance, need to estimate corrected area
149 if(((2*fConeSize-excess)*tpcPhiSize - coneA) !=0 ) phiUEptsumTrackNorm = phiUEptsumTrack*(coneA / ((((2*fConeSize-excess)*tpcPhiSize)-coneA)));
150 if(( 2*fConeSize *tpcEtaSize - coneA) !=0 ) etaUEptsumTrackNorm = etaUEptsumTrack*(coneA / ((( 2*fConeSize *tpcEtaSize)-coneA)));
155 //________________________________________________________________________
156 Float_t AliIsolationCut::CalculateExcessAreaFraction(Float_t excess) const
158 // Area of a circunference segment segment 1/2 R^2 (angle-sin(angle)), angle = 2*ACos((R-excess)/R)
161 Float_t angle = 2*TMath::ACos( (fConeSize-excess) / fConeSize );
163 Float_t coneA = fConeSize*fConeSize*TMath::Pi(); // A = pi R^2, isolation cone area
165 Float_t excessA = fConeSize*fConeSize / 2 * (angle-TMath::Sin(angle));
167 if(coneA > excessA) return coneA / (coneA-excessA);
170 printf("AliIsolationCut::CalculateExcessAreaFraction() - Please Check : Excess Track %2.3f, coneA %2.2f, excessA %2.2f, angle %2.2f,factor %2.2f\n",
171 excess,coneA, excessA, angle*TMath::RadToDeg(), coneA / (coneA-excessA));
176 //_______________________________________________________________________________________
177 Float_t AliIsolationCut::GetCellDensity(AliAODPWG4ParticleCorrelation * pCandidate,
178 AliCaloTrackReader * reader) const
180 // Get good cell density (number of active cells over all cells in cone)
182 Double_t coneCells = 0.; //number of cells in cone with radius fConeSize
183 Double_t coneCellsBad = 0.; //number of bad cells in cone with radius fConeSize
184 Double_t cellDensity = 1.;
186 Float_t phiC = pCandidate->Phi() ;
187 if(phiC<0) phiC+=TMath::TwoPi();
188 Float_t etaC = pCandidate->Eta() ;
190 if(pCandidate->GetDetector()=="EMCAL")
192 AliEMCALGeometry* eGeom = AliEMCALGeometry::GetInstance();
193 AliCalorimeterUtils *cu = reader->GetCaloUtils();
196 if (eGeom->GetAbsCellIdFromEtaPhi(etaC,phiC,absId))
198 //Get absolute (col,row) of candidate
199 Int_t iEta=-1, iPhi=-1, iRCU = -1;
200 Int_t nSupMod = cu->GetModuleNumberCellIndexes(absId, pCandidate->GetDetector(), iEta, iPhi, iRCU);
203 if (nSupMod % 2) colC = AliEMCALGeoParams::fgkEMCALCols + iEta ;
204 Int_t rowC = iPhi + AliEMCALGeoParams::fgkEMCALRows*int(nSupMod/2);
206 Int_t sqrSize = int(fConeSize/0.0143) ; // Size of cell in radians
207 //loop on cells in a square of side fConeSize to check cells in cone
208 for(Int_t icol = colC-sqrSize; icol < colC+sqrSize;icol++)
210 for(Int_t irow = rowC-sqrSize; irow < rowC+sqrSize; irow++)
212 if (Radius(colC, rowC, icol, irow) < sqrSize)
217 Int_t cellEta = -999;
218 Int_t cellPhi = -999;
219 if(icol > AliEMCALGeoParams::fgkEMCALCols-1)
221 cellSM = 0+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
222 cellEta = icol-AliEMCALGeoParams::fgkEMCALCols;
223 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
225 if(icol < AliEMCALGeoParams::fgkEMCALCols)
227 cellSM = 1+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
229 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
232 //Count as bad "cells" out of EMCAL acceptance
233 if(icol < 0 || icol > AliEMCALGeoParams::fgkEMCALCols*2 ||
234 irow < 0 || irow > AliEMCALGeoParams::fgkEMCALRows*16./3) //5*nRows+1/3*nRows
238 //Count as bad "cells" marked as bad in the DataBase
239 else if (cu->GetEMCALChannelStatus(cellSM,cellEta,cellPhi)==1)
248 else if(fDebug>0) printf("cluster with bad (eta,phi) in EMCal for energy density calculation\n");
252 cellDensity = (coneCells-coneCellsBad)/coneCells;
253 //printf("Energy density = %f\n", cellDensity);
261 //__________________________________________________________________________________
262 void AliIsolationCut::GetCoeffNormBadCell(AliAODPWG4ParticleCorrelation * pCandidate,
263 AliCaloTrackReader * reader,
264 Float_t & coneBadCellsCoeff,
265 Float_t & etaBandBadCellsCoeff,
266 Float_t & phiBandBadCellsCoeff)
268 // Get good cell density (number of active cells over all cells in cone)
270 Double_t coneCells = 0.; //number of cells in cone with radius fConeSize
271 Double_t phiBandCells = 0.; //number of cells in band phi
272 Double_t etaBandCells = 0.; //number of cells in band eta
274 Float_t phiC = pCandidate->Phi() ;
275 if(phiC<0) phiC+=TMath::TwoPi();
276 Float_t etaC = pCandidate->Eta() ;
278 if(pCandidate->GetDetector()=="EMCAL")
280 AliEMCALGeometry* eGeom = AliEMCALGeometry::GetInstance();
281 AliCalorimeterUtils *cu = reader->GetCaloUtils();
284 if (eGeom->GetAbsCellIdFromEtaPhi(etaC,phiC,absId))
286 //Get absolute (col,row) of candidate
287 Int_t iEta=-1, iPhi=-1, iRCU = -1;
288 Int_t nSupMod = cu->GetModuleNumberCellIndexes(absId, pCandidate->GetDetector(),
292 if (nSupMod % 2) colC = AliEMCALGeoParams::fgkEMCALCols + iEta ;
293 Int_t rowC = iPhi + AliEMCALGeoParams::fgkEMCALRows*int(nSupMod/2);
295 Int_t sqrSize = int(fConeSize/0.0143) ; // Size of cell in radians
296 for(Int_t icol = 0; icol < 2*AliEMCALGeoParams::fgkEMCALCols-1;icol++)
298 for(Int_t irow = 0; irow < 5*AliEMCALGeoParams::fgkEMCALRows -1; irow++)
300 //loop on cells in a square of side fConeSize to check cells in cone
301 if ( Radius(colC, rowC, icol, irow) < sqrSize ) { coneCells += 1.; }
302 else if( icol>colC-sqrSize && icol<colC+sqrSize ) { phiBandCells += 1 ; }
303 else if( irow>rowC-sqrSize && irow<rowC+sqrSize ) { etaBandCells += 1 ; }
306 Int_t cellEta = -999;
307 Int_t cellPhi = -999;
308 if(icol > AliEMCALGeoParams::fgkEMCALCols-1)
310 cellSM = 0+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
311 cellEta = icol-AliEMCALGeoParams::fgkEMCALCols;
312 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
314 if(icol < AliEMCALGeoParams::fgkEMCALCols)
316 cellSM = 1+int(irow/AliEMCALGeoParams::fgkEMCALRows)*2;
318 cellPhi = irow-AliEMCALGeoParams::fgkEMCALRows*int(cellSM/2);
321 if( (icol < 0 || icol > AliEMCALGeoParams::fgkEMCALCols*2-1 ||
322 irow < 0 || irow > AliEMCALGeoParams::fgkEMCALRows*5 - 1) //5*nRows+1/3*nRows //Count as bad "cells" out of EMCAL acceptance
323 || (cu->GetEMCALChannelStatus(cellSM,cellEta,cellPhi)==1)) //Count as bad "cells" marked as bad in the DataBase
325 if ( Radius(colC, rowC, icol, irow) < sqrSize ) coneBadCellsCoeff += 1.;
326 else if( icol>colC-sqrSize && icol<colC+sqrSize ) phiBandBadCellsCoeff += 1 ;
327 else if( irow>rowC-sqrSize && irow<rowC+sqrSize ) etaBandBadCellsCoeff += 1 ;
333 else if(fDebug > 0) printf("cluster with bad (eta,phi) in EMCal for energy density coeff calculation\n");
337 // printf("Energy density coneBadCellsCoeff= %.2f coneCells%.2f\n", coneBadCellsCoeff,coneCells);
338 coneBadCellsCoeff = (coneCells-coneBadCellsCoeff)/coneCells;
339 // printf("coneBadCellsCoeff= %.2f\n", coneBadCellsCoeff);
341 if (phiBandCells > 0.)
343 // printf("Energy density phiBandBadCellsCoeff = %.2f phiBandCells%.2f\n", phiBandBadCellsCoeff,phiBandCells);
344 phiBandBadCellsCoeff = (phiBandCells-phiBandBadCellsCoeff)/phiBandCells;
345 // printf("phiBandBadCellsCoeff = %.2f\n", phiBandBadCellsCoeff);
347 if (etaBandCells > 0.)
349 //printf("Energy density etaBandBadCellsCoeff = %.2f etaBandCells%.2f\n", etaBandBadCellsCoeff,etaBandCells);
350 etaBandBadCellsCoeff = (etaBandCells-etaBandBadCellsCoeff)/etaBandCells;
351 // printf("etaBandBadCellsCoeff = %.2f\n",etaBandBadCellsCoeff);
358 //____________________________________________
359 TString AliIsolationCut::GetICParametersList()
361 //Put data member values in string to keep in output container
363 TString parList ; //this will be list of parameters used for this analysis.
364 const Int_t buffersize = 255;
365 char onePar[buffersize] ;
367 snprintf(onePar,buffersize,"--- AliIsolationCut ---\n") ;
369 snprintf(onePar,buffersize,"fConeSize: (isolation cone size) %1.2f\n",fConeSize) ;
371 snprintf(onePar,buffersize,"fPtThreshold =%1.2f (isolation pt threshold) \n",fPtThreshold) ;
373 snprintf(onePar,buffersize,"fPtFraction=%1.2f (isolation pt threshold fraction ) \n",fPtFraction) ;
375 snprintf(onePar,buffersize,"fICMethod=%d (isolation cut case) \n",fICMethod) ;
377 snprintf(onePar,buffersize,"fPartInCone=%d \n",fPartInCone) ;
379 snprintf(onePar,buffersize,"fFracIsThresh=%i \n",fFracIsThresh) ;
385 //____________________________________
386 void AliIsolationCut::InitParameters()
388 //Initialize the parameters of the analysis.
392 fPtThresholdMax = 10000. ;
393 fSumPtThreshold = 1.0 ;
394 fSumPtThresholdMax = 10000. ;
396 fPartInCone = kNeutralAndCharged;
397 fICMethod = kSumPtIC; // 0 pt threshol method, 1 cone pt sum method
401 //________________________________________________________________________________
402 void AliIsolationCut::MakeIsolationCut(TObjArray * plCTS,
404 AliCaloTrackReader * reader,
407 AliAODPWG4ParticleCorrelation *pCandidate,
408 TString aodArrayRefName,
412 Bool_t & isolated) const
414 //Search in cone around a candidate particle if it is isolated
415 Float_t ptC = pCandidate->Pt() ;
416 Float_t phiC = pCandidate->Phi() ;
417 if(phiC<0) phiC+=TMath::TwoPi();
418 Float_t etaC = pCandidate->Eta() ;
420 Float_t ptLead = -100. ;
422 Float_t eta = -100. ;
423 Float_t phi = -100. ;
424 Float_t rad = -100. ;
426 Float_t coneptsumCluster = 0;
427 Float_t coneptsumTrack = 0;
429 Float_t etaBandPtSumTrack = 0;
430 Float_t phiBandPtSumTrack = 0;
431 Float_t etaBandPtSumCluster = 0;
432 Float_t phiBandPtSumCluster = 0;
440 printf("AliIsolationCut::MakeIsolationCut() - Cadidate pT %2.2f, eta %2.2f, phi %2.2f, cone %1.2f, thres %2.2f, Fill AOD? %d",
441 pCandidate->Pt(), pCandidate->Eta(), pCandidate->Phi()*TMath::RadToDeg(), fConeSize,fPtThreshold,bFillAOD);
442 if(plCTS) printf(", nTracks %d" ,plCTS->GetEntriesFast());
443 if(plNe) printf(", nClusters %d",plNe ->GetEntriesFast());
448 //Initialize the array with refrences
449 TObjArray * refclusters = 0x0;
450 TObjArray * reftracks = 0x0;
451 Int_t ntrackrefs = 0;
452 Int_t nclusterrefs = 0;
454 //Check charged particles in cone.
456 (fPartInCone==kOnlyCharged || fPartInCone==kNeutralAndCharged))
459 for(Int_t ipr = 0;ipr < plCTS->GetEntries() ; ipr ++ )
461 AliVTrack* track = dynamic_cast<AliVTrack*>(plCTS->At(ipr)) ;
465 //Do not count the candidate (pion, conversion photon) or the daughters of the candidate
466 if(track->GetID() == pCandidate->GetTrackLabel(0) || track->GetID() == pCandidate->GetTrackLabel(1) ||
467 track->GetID() == pCandidate->GetTrackLabel(2) || track->GetID() == pCandidate->GetTrackLabel(3) ) continue ;
469 p3.SetXYZ(track->Px(),track->Py(),track->Pz());
475 {// Mixed event stored in AliAODPWG4Particles
476 AliAODPWG4Particle * trackmix = dynamic_cast<AliAODPWG4Particle*>(plCTS->At(ipr)) ;
479 printf("AliIsolationCut::MakeIsolationCut() - Wrong track data type, continue\n");
484 eta = trackmix->Eta();
485 phi = trackmix->Phi() ;
488 if( phi < 0 ) phi+=TMath::TwoPi();
490 rad = Radius(etaC, phiC, eta, phi);
492 // ** For the background out of cone **
496 if(eta > (etaC-fConeSize) && eta < (etaC+fConeSize)) phiBandPtSumTrack += pt;
497 if(phi > (phiC-fConeSize) && phi < (phiC+fConeSize)) etaBandPtSumTrack += pt;
500 // ** For the isolated particle **
502 // Only loop the particle at the same side of candidate
503 if(TMath::Abs(phi-phiC) > TMath::PiOver2()) continue ;
505 // If at the same side has particle larger than candidate,
506 // then candidate can not be the leading, skip such events
514 pCandidate->SetLeadingParticle(kFALSE);
516 if(bFillAOD && reftracks)
525 // // Check if there is any particle inside cone with pt larger than fPtThreshold
526 // Check if the leading particule inside the cone has a ptLead larger than fPtThreshold
529 printf("\t track %d, pT %2.2f, eta %1.2f, phi %2.2f, R candidate %2.2f", ipr,pt,eta,phi,rad);
533 if(fDebug > 0) printf(" - inside candidate cone");
540 reftracks = new TObjArray(0);
541 //reftracks->SetName(Form("Tracks%s",aodArrayRefName.Data()));
542 TString tempo(aodArrayRefName) ;
544 reftracks->SetName(tempo);
545 reftracks->SetOwner(kFALSE);
547 reftracks->Add(track);
552 if( ptLead < pt ) ptLead = pt;
554 // // *Before*, count particles in cone
555 // if(pt > fPtThreshold && pt < fPtThresholdMax) n++;
557 // //if fPtFraction*ptC<fPtThreshold then consider the fPtThreshold directly
560 // if( fPtFraction*ptC < fPtThreshold )
562 // if( pt > fPtThreshold ) nfrac++ ;
566 // if( pt > fPtFraction*ptC ) nfrac++;
571 // if( pt > fPtFraction*ptC ) nfrac++;
576 if( fDebug > 0 ) printf("\n");
578 }// charged particle loop
583 //Check neutral particles in cone.
585 (fPartInCone==kOnlyNeutral || fPartInCone==kNeutralAndCharged))
589 for(Int_t ipr = 0;ipr < plNe->GetEntries() ; ipr ++ )
591 AliVCluster * calo = dynamic_cast<AliVCluster *>(plNe->At(ipr)) ;
595 //Get the index where the cluster comes, to retrieve the corresponding vertex
597 if (reader->GetMixedEvent())
598 evtIndex=reader->GetMixedEvent()->EventIndexForCaloCluster(calo->GetID()) ;
601 //Do not count the candidate (photon or pi0) or the daughters of the candidate
602 if(calo->GetID() == pCandidate->GetCaloLabel(0) ||
603 calo->GetID() == pCandidate->GetCaloLabel(1) ) continue ;
605 //Skip matched clusters with tracks in case of neutral+charged analysis
606 if( fPartInCone == kNeutralAndCharged &&
607 pid->IsTrackMatched(calo,reader->GetCaloUtils(),reader->GetInputEvent()) ) continue ;
609 //Assume that come from vertex in straight line
610 calo->GetMomentum(mom,reader->GetVertex(evtIndex)) ;
617 {// Mixed event stored in AliAODPWG4Particles
618 AliAODPWG4Particle * calomix = dynamic_cast<AliAODPWG4Particle*>(plNe->At(ipr)) ;
621 printf("AliIsolationCut::MakeIsolationCut() - Wrong calo data type, continue\n");
626 eta = calomix->Eta();
627 phi = calomix->Phi() ;
630 if( phi < 0 ) phi+=TMath::TwoPi();
632 rad = Radius(etaC, phiC, eta, phi);
634 // ** For the background out of cone **
638 if(eta > (etaC-fConeSize) && eta < (etaC+fConeSize)) phiBandPtSumCluster += pt;
639 if(phi > (phiC-fConeSize) && phi < (phiC+fConeSize)) etaBandPtSumCluster += pt;
642 // ** For the isolated particle **
644 // Only loop the particle at the same side of candidate
645 if(TMath::Abs(phi-phiC)>TMath::PiOver2()) continue ;
647 // If at the same side has particle larger than candidate,
648 // then candidate can not be the leading, skip such events
653 coneptsumCluster = -1;
656 pCandidate->SetLeadingParticle(kFALSE);
668 refclusters->Clear();
675 //Check if there is any particle inside cone with pt larger than fPtThreshold
678 printf("\t cluster %d, pT %2.2f, eta %1.2f, phi %2.2f, R candidate %2.2f", ipr,pt,eta,phi,rad);
682 if(fDebug > 0 ) printf(" - inside candidate cone");
689 refclusters = new TObjArray(0);
690 //refclusters->SetName(Form("Clusters%s",aodArrayRefName.Data()));
691 TString tempo(aodArrayRefName) ;
692 tempo += "Clusters" ;
693 refclusters->SetName(tempo);
694 refclusters->SetOwner(kFALSE);
696 refclusters->Add(calo);
699 coneptsumCluster+=pt;
701 if( ptLead < pt ) ptLead = pt;
703 // // *Before*, count particles in cone
704 // if(pt > fPtThreshold && pt < fPtThresholdMax) n++;
706 // //if fPtFraction*ptC<fPtThreshold then consider the fPtThreshold directly
709 // if( fPtFraction*ptC < fPtThreshold )
711 // if( pt > fPtThreshold ) nfrac++ ;
715 // if( pt > fPtFraction*ptC ) nfrac++;
720 // if( pt > fPtFraction*ptC ) nfrac++;
725 if(fDebug > 0 ) printf("\n");
727 }// neutral particle loop
731 //Add reference arrays to AOD when filling AODs only
734 if(refclusters) pCandidate->AddObjArray(refclusters);
735 if(reftracks) pCandidate->AddObjArray(reftracks);
738 coneptsum = coneptsumCluster + coneptsumTrack;
740 // *Now*, just check the leading particle in the cone if the threshold is passed
741 if(ptLead > fPtThreshold && ptLead < fPtThresholdMax) n = 1;
743 //if fPtFraction*ptC<fPtThreshold then consider the fPtThreshold directly
746 if( fPtFraction*ptC < fPtThreshold )
748 if( ptLead > fPtThreshold ) nfrac = 1 ;
752 if( ptLead > fPtFraction*ptC ) nfrac = 1;
757 if( ptLead > fPtFraction*ptC ) nfrac = 1;
760 //-------------------------------------------------------------------
761 //Check isolation, depending on selected isolation criteria requested
763 if( fICMethod == kPtThresIC)
765 if( n == 0 ) isolated = kTRUE ;
767 else if( fICMethod == kSumPtIC )
769 if( coneptsum > fSumPtThreshold &&
770 coneptsum < fSumPtThresholdMax )
775 else if( fICMethod == kPtFracIC )
777 if(nfrac == 0 ) isolated = kTRUE ;
779 else if( fICMethod == kSumPtFracIC )
781 //when the fPtFraction*ptC < fSumPtThreshold then consider the later case
782 // printf("photon analysis IsDataMC() ?%i\n",IsDataMC());
785 if( fPtFraction*ptC < fSumPtThreshold && coneptsum < fSumPtThreshold ) isolated = kTRUE ;
786 if( fPtFraction*ptC > fSumPtThreshold && coneptsum < fPtFraction*ptC ) isolated = kTRUE ;
790 if( coneptsum < fPtFraction*ptC ) isolated = kTRUE ;
793 else if( fICMethod == kSumDensityIC )
795 // Get good cell density (number of active cells over all cells in cone)
796 // and correct energy in cone
798 Float_t cellDensity = GetCellDensity(pCandidate,reader);
800 if( coneptsum < fSumPtThreshold*cellDensity )
803 else if( fICMethod == kSumBkgSubIC )
805 Double_t coneptsumBkg = 0.;
806 Float_t etaBandPtSumTrackNorm = 0;
807 Float_t phiBandPtSumTrackNorm = 0;
808 Float_t etaBandPtSumClusterNorm = 0;
809 Float_t phiBandPtSumClusterNorm = 0;
811 Float_t excessFracEtaTrack = 1;
812 Float_t excessFracPhiTrack = 1;
813 Float_t excessFracEtaCluster = 1;
814 Float_t excessFracPhiCluster = 1;
816 // Normalize background to cone area
817 if (fPartInCone != kOnlyCharged )
818 CalculateUEBandClusterNormalization(reader, etaC, phiC,
819 phiBandPtSumCluster , etaBandPtSumCluster,
820 phiBandPtSumClusterNorm, etaBandPtSumClusterNorm,
821 excessFracEtaCluster , excessFracPhiCluster );
822 if (fPartInCone != kOnlyNeutral )
823 CalculateUEBandTrackNormalization(reader, etaC, phiC,
824 phiBandPtSumTrack , etaBandPtSumTrack ,
825 phiBandPtSumTrackNorm, etaBandPtSumTrackNorm,
826 excessFracEtaTrack , excessFracPhiTrack );
828 if (fPartInCone == kOnlyCharged ) coneptsumBkg = etaBandPtSumTrackNorm;
829 else if(fPartInCone == kOnlyNeutral ) coneptsumBkg = etaBandPtSumClusterNorm;
830 else if(fPartInCone == kNeutralAndCharged ) coneptsumBkg = etaBandPtSumClusterNorm + etaBandPtSumTrackNorm;
832 //coneptsumCluster*=(coneBadCellsCoeff*excessFracEtaCluster*excessFracPhiCluster) ; // apply this correction earlier???
833 // line commented out in last modif!!!
835 coneptsum = coneptsumCluster+coneptsumTrack;
837 coneptsum -= coneptsumBkg;
839 if( coneptsum > fSumPtThreshold && coneptsum < fSumPtThresholdMax )
848 //_____________________________________________________
849 void AliIsolationCut::Print(const Option_t * opt) const
852 //Print some relevant parameters set for the analysis
856 printf("**** Print %s %s **** \n", GetName(), GetTitle() ) ;
858 printf("IC method = %d\n", fICMethod ) ;
859 printf("Cone Size = %1.2f\n", fConeSize ) ;
860 printf("pT threshold = %2.1f\n", fPtThreshold) ;
861 printf("pT fraction = %3.1f\n", fPtFraction ) ;
862 printf("particle type in cone = %d\n", fPartInCone ) ;
863 printf("using fraction for high pt leading instead of frac ? %i\n",fFracIsThresh);
868 //___________________________________________________________________________
869 Float_t AliIsolationCut::Radius(Float_t etaC, Float_t phiC,
870 Float_t eta , Float_t phi) const
872 // Calculate the distance to trigger from any particle
874 Float_t dEta = etaC-eta;
875 Float_t dPhi = phiC-phi;
877 if(TMath::Abs(dPhi) >= TMath::Pi())
878 dPhi = TMath::TwoPi()-TMath::Abs(dPhi);
880 return TMath::Sqrt( dEta*dEta + dPhi*dPhi );