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ee7de0dd 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
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/* $Id$ */
17
18//---------------------------------------------------------------------
8838ab7a 19// UA1 Cone Algorithm Jet finder for charged + neutral jet studies
20// manages the search for jets using charged particle momentum and
21// neutral cell energy information
22// Based on UA1 V1 (from R. Diaz)
23// Author: magali.estienne@subatech.in2p3.fr
ee7de0dd 24//---------------------------------------------------------------------
25
ee7de0dd 26#include <TClonesArray.h>
ee7de0dd 27#include <TH1F.h>
28#include <TH2F.h>
29#include <TLorentzVector.h>
30#include <TMath.h>
31#include <TRefArray.h>
be6e5811 32#include "TFile.h"
ee7de0dd 33
34#include "AliUA1JetFinderV2.h"
35#include "AliUA1JetHeaderV1.h"
36#include "AliJetUnitArray.h"
952b368c 37#include "AliJetReaderHeader.h"
38#include "AliJetReader.h"
39#include "AliJetHeader.h"
ee7de0dd 40
be6e5811 41class TArrayF;
42class TFile;
43class AliJetReader;
44class AliAODJet;
ee7de0dd 45
46ClassImp(AliUA1JetFinderV2)
47
ee7de0dd 48
8838ab7a 49////////////////////////////////////////////////////////////////////////
9e4cc50d 50AliUA1JetFinderV2::AliUA1JetFinderV2() :
8838ab7a 51 AliJetFinder(),
52 fLego(0),
53 fDebug(0),
54 fOpt(0)
ee7de0dd 55{
8838ab7a 56 //
ee7de0dd 57 // Constructor
8838ab7a 58 //
ee7de0dd 59}
60
61////////////////////////////////////////////////////////////////////////
ee7de0dd 62AliUA1JetFinderV2::~AliUA1JetFinderV2()
ee7de0dd 63{
8838ab7a 64 //
65 // Destructor
66 //
ee7de0dd 67}
68
69////////////////////////////////////////////////////////////////////////
8838ab7a 70void AliUA1JetFinderV2::FindJetsC()
71{
72 //
73 // Used to find jets using charged particle momentum information
74 //
75 // 1) Fill cell map array
76 // 2) calculate total energy and fluctuation level
77 // 3) Run algorithm
78 // 3.1) look centroides in cell map
79 // 3.2) calculate total energy in cones
80 // 3.3) flag as a possible jet
81 // 3.4) reorder cones by energy
82 // 4) subtract backg in accepted jets
83 // 5) fill AliJet list
84
85 // Transform input to pt,eta,phi plus lego
86
87 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
88 TClonesArray* lvArray = fReader->GetMomentumArray();
89 Int_t nIn = lvArray->GetEntries();
90
91 if (nIn == 0) return;
92
93 // local arrays for input
94 Float_t* ptT = new Float_t[nIn];
95 Float_t* etaT = new Float_t[nIn];
96 Float_t* phiT = new Float_t[nIn];
97 Float_t* cFlagT = new Float_t[nIn]; // Temporarily added
98 Float_t* sFlagT = new Float_t[nIn]; // Temporarily added
99 Int_t* injet = new Int_t[nIn];
100
101 //total energy in array
102 Float_t etbgTotal = 0.0;
103 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
104
105 // load input vectors and calculate total energy in array
106 for (Int_t i = 0; i < nIn; i++){
107 TLorentzVector *lv = (TLorentzVector*) lvArray->At(i);
108 ptT[i] = lv->Pt();
109 etaT[i] = lv->Eta();
110 phiT[i] = ((lv->Phi() < 0) ? (lv->Phi()) + 2 * TMath::Pi() : lv->Phi());
be6e5811 111 cFlagT[i] = fReader->GetCutFlag(i);
112 sFlagT[i] = fReader->GetSignalFlag(i);
8838ab7a 113
114 if (fReader->GetCutFlag(i) != 1) continue;
115 fLego->Fill(etaT[i], phiT[i], ptT[i]);
116 hPtTotal->Fill(ptT[i]);
117 etbgTotal+= ptT[i];
118 }
119
8838ab7a 120
121 // calculate total energy and fluctuation in map
122 Double_t meanpt = hPtTotal->GetMean();
123 Double_t ptRMS = hPtTotal->GetRMS();
124 Double_t npart = hPtTotal->GetEntries();
125 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
126
127 // arrays to hold jets
be6e5811 128 Float_t* etaJet = new Float_t[30]; // eta jet
129 Float_t* phiJet = new Float_t[30]; // phi jet
130 Float_t* etJet = new Float_t[30]; // et jet
131 Float_t* etsigJet = new Float_t[30]; // signal et in jet
8838ab7a 132 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
133 Int_t* ncellsJet = new Int_t[30];
134 Int_t* multJet = new Int_t[30];
135 //--- Added for jet reordering at the end of the jet finding procedure
136 Float_t* etaJetOk = new Float_t[30];
137 Float_t* phiJetOk = new Float_t[30];
138 Float_t* etJetOk = new Float_t[30];
be6e5811 139 Float_t* etsigJetOk = new Float_t[30]; // signal et in jet
8838ab7a 140 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
141 Int_t* ncellsJetOk = new Int_t[30];
142 Int_t* multJetOk = new Int_t[30];
143 //--------------------------
144 Int_t nJets; // to hold number of jets found by algorithm
145 Int_t nj; // number of jets accepted
146 Float_t prec = header->GetPrecBg();
147 Float_t bgprec = 1;
148 while(bgprec > prec){
149 //reset jet arrays in memory
150 memset(etaJet,0,sizeof(Float_t)*30);
151 memset(phiJet,0,sizeof(Float_t)*30);
152 memset(etJet,0,sizeof(Float_t)*30);
153 memset(etallJet,0,sizeof(Float_t)*30);
154 memset(etsigJet,0,sizeof(Float_t)*30);
155 memset(ncellsJet,0,sizeof(Int_t)*30);
156 memset(multJet,0,sizeof(Int_t)*30);
157 //--- Added for jet reordering at the end of the jet finding procedure
158 memset(etaJetOk,0,sizeof(Float_t)*30);
159 memset(phiJetOk,0,sizeof(Float_t)*30);
160 memset(etJetOk,0,sizeof(Float_t)*30);
161 memset(etallJetOk,0,sizeof(Float_t)*30);
162 memset(etsigJetOk,0,sizeof(Float_t)*30);
163 memset(ncellsJetOk,0,sizeof(Int_t)*30);
164 memset(multJetOk,0,sizeof(Int_t)*30);
165 //--------------------------
166 nJets = 0;
167 nj = 0;
168
169 // reset particles-jet array in memory
170 memset(injet,-1,sizeof(Int_t)*nIn);
171 //run cone algorithm finder
172 RunAlgoritmC(etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,etallJet,ncellsJet);
173
174 //run background subtraction
175 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
176 nj = header->GetNAcceptJets();
177 else
178 nj = nJets;
179 //subtract background
180 Float_t etbgTotalN = 0.0; //new background
181 if(header->GetBackgMode() == 1) // standard
8838ab7a 182 SubtractBackgC(nIn,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
183 if(header->GetBackgMode() == 2) //cone
184 SubtractBackgCone(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
185 if(header->GetBackgMode() == 3) //ratio
186 SubtractBackgRatio(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
187 if(header->GetBackgMode() == 4) //statistic
188 SubtractBackgStat(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
189 //calc precision
190 if(etbgTotalN != 0.0)
191 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
192 else
193 bgprec = 0;
194 etbgTotal = etbgTotalN; // update with new background estimation
195 } //end while
196
197 // add jets to list
198 Int_t* idxjets = new Int_t[nj];
199 Int_t nselectj = 0;
200 printf("Found %d jets \n", nj);
ee7de0dd 201
8838ab7a 202 // Reorder jets by et in cone
203 Int_t * idx = new Int_t[nJets];
204 TMath::Sort(nJets, etJet, idx);
205 for(Int_t p = 0; p < nJets; p++){
206 etaJetOk[p] = etaJet[idx[p]];
207 phiJetOk[p] = phiJet[idx[p]];
208 etJetOk[p] = etJet[idx[p]];
209 etallJetOk[p] = etJet[idx[p]];
be6e5811 210 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 211 ncellsJetOk[p] = ncellsJet[idx[p]];
212 multJetOk[p] = multJet[idx[p]];
213 }
214
215 for(Int_t kj=0; kj<nj; kj++)
216 {
217 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
218 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
219 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
220 Float_t px, py,pz,en; // convert to 4-vector
221 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
222 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
223 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
224 en = TMath::Sqrt(px * px + py * py + pz * pz);
8838ab7a 225
226 AliAODJet jet(px, py, pz, en);
227 jet.Print("");
228
229 AddJet(jet);
230
231 idxjets[nselectj] = kj;
232 nselectj++;
233 }
ee7de0dd 234
8838ab7a 235 //add signal percentage and total signal in AliJets for analysis tool
236 Float_t* percentage = new Float_t[nselectj];
237 Int_t* ncells = new Int_t[nselectj];
238 Int_t* mult = new Int_t[nselectj];
239 for(Int_t i = 0; i< nselectj; i++)
240 {
241 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
242 ncells[i] = ncellsJetOk[idxjets[i]];
243 mult[i] = multJetOk[idxjets[i]];
244 }
245
246 //add particle-injet relationship ///
247 for(Int_t bj = 0; bj < nIn; bj++)
248 {
249 if(injet[bj] == -1) continue; //background particle
250 Int_t bflag = 0;
251 for(Int_t ci = 0; ci< nselectj; ci++){
252 if(injet[bj] == idxjets[ci]){
253 injet[bj]= ci;
254 bflag++;
255 break;
256 }
257 }
258 if(bflag == 0) injet[bj] = -1; // set as background particle
259 }
260
8838ab7a 261
262 //delete
263 delete[] ptT;
264 delete[] etaT;
265 delete[] phiT;
266 delete[] cFlagT;
267 delete[] sFlagT;
268 delete[] injet;
269 delete[] hPtTotal;
270 delete[] etaJet;
271 delete[] phiJet;
272 delete[] etJet;
273 delete[] etsigJet;
274 delete[] etallJet;
275 delete[] ncellsJet;
276 delete[] multJet;
277 delete[] idxjets;
278 delete[] percentage;
279 delete[] ncells;
280 delete[] mult;
281 //--- Added for jet reordering
282 delete etaJetOk;
283 delete phiJetOk;
284 delete etJetOk;
285 delete etsigJetOk;
286 delete etallJetOk;
287 delete ncellsJetOk;
288 delete multJetOk;
289 //--------------------------
290
291}
ee7de0dd 292
8838ab7a 293////////////////////////////////////////////////////////////////////////
294void AliUA1JetFinderV2::FindJets()
ee7de0dd 295{
8838ab7a 296 //
297 // Used to find jets using charged particle momentum information
298 // & neutral energy from calo cells
299 //
300 // 1) Fill cell map array
301 // 2) calculate total energy and fluctuation level
302 // 3) Run algorithm
303 // 3.1) look centroides in cell map
304 // 3.2) calculate total energy in cones
305 // 3.3) flag as a possible jet
306 // 3.4) reorder cones by energy
307 // 4) subtract backg in accepted jets
308 // 5) fill AliJet list
ee7de0dd 309
310 // transform input to pt,eta,phi plus lego
311
8838ab7a 312 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
313 TClonesArray* fUnit = fReader->GetUnitArray();
314 Int_t nCand = fReader->GetNumCandidate();
315 Int_t nCandCut = fReader->GetNumCandidateCut();
316 Int_t nIn = fUnit->GetEntries();
be6e5811 317 Float_t ptMin = fReader->GetReaderHeader()->GetPtCut();
ee7de0dd 318
be6e5811 319 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 320 if (nIn == 0) return;
321
8838ab7a 322 Int_t nCandidateCut = 0;
323 Int_t nCandidate = 0;
324
325 nCandidate = nCand;
326 nCandidateCut = nCandCut;
327
ee7de0dd 328 // local arrays for input No Cuts
329 // Both pt < ptMin and pt > ptMin
be6e5811 330 Float_t* ptT = new Float_t[nCandidate];
331 Float_t* en2T = new Float_t[nCandidate];
332 Float_t* pt2T = new Float_t[nCandidate];
333 Int_t* detT = new Int_t[nCandidate];
334 Float_t* etaT = new Float_t[nCandidate];
335 Float_t* phiT = new Float_t[nCandidate];
336 Float_t* cFlagT = new Float_t[nCandidate];
337 Float_t* cFlag2T = new Float_t[nCandidate];
338 Float_t* sFlagT = new Float_t[nCandidate];
339 Float_t* cClusterT = new Float_t[nCandidate];
340 Int_t* vectT = new Int_t[nCandidate];
341 Int_t loop1 = 0;
342 Int_t* injet = new Int_t[nCandidate];
343 Int_t* sflag = new Int_t[nCandidate];
344 TRefArray* trackRef = new TRefArray();
ee7de0dd 345
346 //total energy in array
347 Float_t etbgTotal = 0.0;
be6e5811 348 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
ee7de0dd 349
350 // Input cell info
be6e5811 351 Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
352 Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
353 Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
354 Int_t *flagCell = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
355 Float_t *etCell2 = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
356 Float_t *etaCell2 = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
357 Float_t *phiCell2 = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
8838ab7a 358 Int_t *flagCell2 = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
359
ee7de0dd 360 // Information extracted from fUnitArray
8838ab7a 361 // Load input vectors and calculate total energy in array
ee7de0dd 362 for(Int_t i=0; i<nIn; i++)
363 {
8838ab7a 364 // Recover particle information from UnitArray
365
ee7de0dd 366 AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i);
be6e5811 367 TRefArray* ref = uArray->GetUnitTrackRef();
368 Int_t nRef = ref->GetEntries();
369
ee7de0dd 370 if(uArray->GetUnitEnergy()>0.){
be6e5811 371
372 for(Int_t jpart=0; jpart<nRef;jpart++)
373 trackRef->Add((AliVTrack*)ref->At(jpart));
ee7de0dd 374 ptT[loop1] = uArray->GetUnitEnergy();
8838ab7a 375 detT[loop1] = uArray->GetUnitDetectorFlag();
ee7de0dd 376 etaT[loop1] = uArray->GetUnitEta();
377 phiT[loop1] = uArray->GetUnitPhi();
8838ab7a 378 cFlagT[loop1]= uArray->GetUnitCutFlag(); // pt cut tpc
379 cFlag2T[loop1]= uArray->GetUnitCutFlag2(); // pt cut emcal
380 sFlagT[loop1]= uArray->GetUnitSignalFlag();
be6e5811 381 vectT[loop1] = nRef;
8838ab7a 382 if(cFlagT[loop1] == 1 || cFlag2T[loop1] == 1) {
383 pt2T[loop1] = 0.;
384 en2T[loop1] = 0.;
385 if(detT[loop1]==1){
386 en2T[loop1] = ptT[loop1] - header->GetMinCellEt();
387 if(en2T[loop1] < 0) en2T[loop1]=0;
388 hPtTotal->Fill(en2T[loop1]);
389 etbgTotal += en2T[loop1];
390 }
391 if(detT[loop1]==0){ // TPC+ITS
392 Float_t pt = 0.;
be6e5811 393 for(Int_t j=0; j<nRef;j++){
8838ab7a 394 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 395 x = ((AliVTrack*)ref->At(j))->Px();
396 y = ((AliVTrack*)ref->At(j))->Py();
397 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 398 pt = TMath::Sqrt(x*x+y*y);
be6e5811 399 if(pt>ptMin) {
8838ab7a 400 pt2T[loop1] += pt;
401 en2T[loop1] += pt;
402 hPtTotal->Fill(pt);
403 etbgTotal+= pt;
404 }
405 }
406 }
407 if(detT[loop1]==2) { // EMCal
408 Float_t ptCTot = 0.;
409 Float_t pt = 0.;
410 Float_t enC = 0.;
be6e5811 411 for(Int_t j=0; j<nRef;j++){
8838ab7a 412 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 413 x = ((AliVTrack*)ref->At(j))->Px();
414 y = ((AliVTrack*)ref->At(j))->Py();
415 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 416 pt = TMath::Sqrt(x*x+y*y);
be6e5811 417 if(pt>ptMin) {
8838ab7a 418 pt2T[loop1]+=pt;
419 en2T[loop1]+=pt;
420 hPtTotal->Fill(pt);
421 etbgTotal+= pt;
422 }
423 ptCTot += pt;
424 }
425 enC = ptT[loop1] - ptCTot - header->GetMinCellEt();
426 if(enC < 0.) enC=0.;
427 en2T[loop1] += enC;
428 hPtTotal->Fill(enC);
429 etbgTotal+= enC;
430 }
ee7de0dd 431 }
432 loop1++;
433 }
ee7de0dd 434
8838ab7a 435 if(uArray->GetUnitCutFlag()==1) {
436 if(uArray->GetUnitDetectorFlag()==1){ // EMCal case
437 etCell[i] = uArray->GetUnitEnergy() - header->GetMinCellEt();
438 if ((uArray->GetUnitEnergy() - header->GetMinCellEt()) < 0.0) etCell[i]=0.;
439 etaCell[i] = uArray->GetUnitEta();
440 phiCell[i] = uArray->GetUnitPhi();
441 flagCell[i] = 0; // default
442 etCell2[i] = etCell[i];
443 etaCell2[i] = uArray->GetUnitEta();
444 phiCell2[i] = uArray->GetUnitPhi();
445 flagCell2[i] = 0; // default
446 }
447 if(uArray->GetUnitDetectorFlag()==0){ // TPC case
448 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
be6e5811 449 for(Int_t j=0; j<nRef;j++)
8838ab7a 450 {
451 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 452 x = ((AliVTrack*)ref->At(j))->Px();
453 y = ((AliVTrack*)ref->At(j))->Py();
454 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 455 pt = TMath::Sqrt(x*x+y*y);
be6e5811 456 if(pt>ptMin) {
8838ab7a 457 et1 += pt;
458 et2 += pt;
459 }
460 }
461 etCell[i] = et1;
462 etCell2[i] = et2;
463 if(et1 < 0.) etCell[i] = etCell2[i] = 0.;
464 etaCell[i] = uArray->GetUnitEta();
465 phiCell[i] = uArray->GetUnitPhi();
466 flagCell[i] = 0; // default
467 etaCell2[i] = uArray->GetUnitEta();
468 phiCell2[i] = uArray->GetUnitPhi();
469 flagCell2[i] = 0; // default
470 }
471 if(uArray->GetUnitDetectorFlag()==2){ // TPC + EMCal case
472 Float_t ptCTot = 0.;
473 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
474 Float_t enC = 0.;
be6e5811 475 for(Int_t j=0; j<nRef;j++)
8838ab7a 476 {
477 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 478 x = ((AliVTrack*)ref->At(j))->Px();
479 y = ((AliVTrack*)ref->At(j))->Py();
480 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 481 pt = TMath::Sqrt(x*x+y*y);
be6e5811 482 if(pt>ptMin) {
8838ab7a 483 et1 += pt;
484 et2 += pt;
485 }
486 ptCTot += pt;
487 }
488 enC = uArray->GetUnitEnergy() - ptCTot;
489 etCell[i] = et1 + enC - header->GetMinCellEt();
490 etCell2[i] = et2 + enC - header->GetMinCellEt();
491 if((enC + et1 - header->GetMinCellEt()) < 0.) etCell[i] = etCell2[i] = 0.;
492 etaCell[i] = uArray->GetUnitEta();
493 phiCell[i] = uArray->GetUnitPhi();
494 flagCell[i] = 0; // default
495 etaCell2[i] = uArray->GetUnitEta();
496 phiCell2[i] = uArray->GetUnitPhi();
497 flagCell2[i] = 0; // default
498 }
499 }
500 else {
501 etCell[i] = 0.;
502 etaCell[i] = uArray->GetUnitEta();
503 phiCell[i] = uArray->GetUnitPhi();
504 flagCell[i] = 0;
505 etCell2[i] = 0.;
506 etaCell2[i] = uArray->GetUnitEta();
507 phiCell2[i] = uArray->GetUnitPhi();
508 flagCell2[i] = 0;
509 }
510 } // end loop on nCandidate
511
ee7de0dd 512
513 // calculate total energy and fluctuation in map
514 Double_t meanpt = hPtTotal->GetMean();
515 Double_t ptRMS = hPtTotal->GetRMS();
516 Double_t npart = hPtTotal->GetEntries();
517 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
518
519 // arrays to hold jets
8838ab7a 520 Float_t* etaJet = new Float_t[30];
521 Float_t* phiJet = new Float_t[30];
522 Float_t* etJet = new Float_t[30];
ee7de0dd 523 Float_t* etsigJet = new Float_t[30]; //signal et in jet
8838ab7a 524 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
525 Int_t* ncellsJet = new Int_t[30];
526 Int_t* multJet = new Int_t[30];
527 //--- Added by me for jet reordering at the end of the jet finding procedure
528 Float_t* etaJetOk = new Float_t[30];
529 Float_t* phiJetOk = new Float_t[30];
530 Float_t* etJetOk = new Float_t[30];
531 Float_t* etsigJetOk = new Float_t[30]; //signal et in jet
532 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
533 Int_t* ncellsJetOk = new Int_t[30];
534 Int_t* multJetOk = new Int_t[30];
535 //--------------------------
536 Int_t nJets; // to hold number of jets found by algorithm
537 Int_t nj; // number of jets accepted
538 Float_t prec = header->GetPrecBg();
539 Float_t bgprec = 1;
540
ee7de0dd 541 while(bgprec > prec){
ee7de0dd 542
8838ab7a 543 //reset jet arrays in memory
544 memset(etaJet,0,sizeof(Float_t)*30);
545 memset(phiJet,0,sizeof(Float_t)*30);
546 memset(etJet,0,sizeof(Float_t)*30);
547 memset(etallJet,0,sizeof(Float_t)*30);
548 memset(etsigJet,0,sizeof(Float_t)*30);
549 memset(ncellsJet,0,sizeof(Int_t)*30);
550 memset(multJet,0,sizeof(Int_t)*30);
551 //--- Added by me for jet reordering at the end of the jet finding procedure
552 memset(etaJetOk,0,sizeof(Float_t)*30);
553 memset(phiJetOk,0,sizeof(Float_t)*30);
554 memset(etJetOk,0,sizeof(Float_t)*30);
555 memset(etallJetOk,0,sizeof(Float_t)*30);
556 memset(etsigJetOk,0,sizeof(Float_t)*30);
557 memset(ncellsJetOk,0,sizeof(Int_t)*30);
558 memset(multJetOk,0,sizeof(Int_t)*30);
559
560 nJets = 0;
561 nj = 0;
562
563 // reset particles-jet array in memory
564 memset(injet,-1,sizeof(Int_t)*nCandidate);
565 //run cone algorithm finder
566 RunAlgoritm(nIn,etCell,etaCell,phiCell,flagCell,etCell2,etaCell2,phiCell2,
567 flagCell2,etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,
568 etallJet,ncellsJet);
569
570 //run background subtraction
571 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
572 nj = header->GetNAcceptJets();
573 else
574 nj = nJets;
575
576 //subtract background
577 Float_t etbgTotalN = 0.0; //new background
578 if(header->GetBackgMode() == 1) // standard
579 SubtractBackg(nCandidate,nj,etbgTotalN,en2T,vectT,etaT,phiT,cFlagT,cFlag2T,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
580 // To be modified ------------------------
581 if(header->GetBackgMode() == 2) //cone
582 SubtractBackgCone(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
583 if(header->GetBackgMode() == 3) //ratio
584 SubtractBackgRatio(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
585 if(header->GetBackgMode() == 4) //statistic
586 SubtractBackgStat(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
587 //----------------------------------------
588 //calc precision
589 if(etbgTotalN != 0.0)
590 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
591 else
592 bgprec = 0;
593 etbgTotal = etbgTotalN; // update with new background estimation
594 } //end while
595
ee7de0dd 596 // add jets to list
597 Int_t* idxjets = new Int_t[nj];
598 Int_t nselectj = 0;
599 printf("Found %d jets \n", nj);
600
8838ab7a 601 // Reorder jets by et in cone
602 // Sort jets by energy
603 Int_t * idx = new Int_t[nJets];
604 TMath::Sort(nJets, etJet, idx);
605 for(Int_t p = 0; p < nJets; p++)
606 {
607 etaJetOk[p] = etaJet[idx[p]];
608 phiJetOk[p] = phiJet[idx[p]];
609 etJetOk[p] = etJet[idx[p]];
610 etallJetOk[p] = etJet[idx[p]];
be6e5811 611 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 612 ncellsJetOk[p] = ncellsJet[idx[p]];
613 multJetOk[p] = multJet[idx[p]];
614 }
615
e36a3f22 616 TRefArray *refs = 0;
617 Bool_t fromAod = !strcmp(fReader->ClassName(),"AliJetAODReader");
618 if (fromAod) refs = fReader->GetReferences();
619 Int_t nTracks = 0;
620 if (fromAod) nTracks = ((TRefArray*)refs)->GetEntries();
621 Int_t* trackinjet = new Int_t[nTracks];
622 for(Int_t it=0; it<nTracks; it++) trackinjet[it]=-1;
623
8838ab7a 624 for(Int_t kj=0; kj<nj; kj++)
625 {
626 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
627 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
628 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
ee7de0dd 629 Float_t px, py,pz,en; // convert to 4-vector
8838ab7a 630 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
631 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
632 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
ee7de0dd 633 en = TMath::Sqrt(px * px + py * py + pz * pz);
42b0ac89 634
ee7de0dd 635 AliAODJet jet(px, py, pz, en);
636 jet.Print("");
637
e36a3f22 638 if (fromAod){
639 for(Int_t jpart = 0; jpart < nTracks; jpart++) { // loop for all particles in array
640 Float_t deta = ((AliAODTrack*)refs->At(jpart))->Eta() - etaJetOk[kj];
641 Float_t dphi = ((AliAODTrack*)refs->At(jpart))->Phi() - phiJetOk[kj];
642 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
643 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
e59b9a1c 644
e36a3f22 645 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
e59b9a1c 646 if(dr <= header->GetRadius() && fReader->GetCutFlag(jpart) == 1) {
647 // particles inside this cone
648 if(trackinjet[jpart]==-1) {
649 trackinjet[jpart] = kj;
650 } else if(fDebug>10) {
651 printf("The track already belongs to jet %d \n",trackinjet[jpart]);
652 }
653 }
e36a3f22 654 if(trackinjet[jpart]==kj)
e59b9a1c 655 jet.AddTrack(refs->At(jpart)); // check if the particle belongs to the jet and add the ref
e36a3f22 656 }
657 }
658
ee7de0dd 659 AddJet(jet);
660
661 idxjets[nselectj] = kj;
662 nselectj++;
8838ab7a 663 }
664
ee7de0dd 665 //add signal percentage and total signal in AliJets for analysis tool
666 Float_t* percentage = new Float_t[nselectj];
667 Int_t* ncells = new Int_t[nselectj];
668 Int_t* mult = new Int_t[nselectj];
8838ab7a 669 for(Int_t i = 0; i< nselectj; i++)
670 {
671 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
672 ncells[i] = ncellsJetOk[idxjets[i]];
673 mult[i] = multJetOk[idxjets[i]];
674 }
675
676 //add particle-injet relationship ///
677 for(Int_t bj = 0; bj < nCandidate; bj++)
678 {
679 if(injet[bj] == -1) continue; //background particle
680 Int_t bflag = 0;
681 for(Int_t ci = 0; ci< nselectj; ci++){
682 if(injet[bj] == idxjets[ci]){
683 injet[bj]= ci;
684 bflag++;
685 break;
686 }
687 }
688 if(bflag == 0) injet[bj] = -1; // set as background particle
ee7de0dd 689 }
8838ab7a 690
ee7de0dd 691
692 //delete
ee7de0dd 693 delete ptT;
8838ab7a 694 delete en2T;
695 delete pt2T;
ee7de0dd 696 delete etaT;
697 delete phiT;
be6e5811 698 trackRef->Delete();
699 delete trackRef;
8838ab7a 700 delete detT;
ee7de0dd 701 delete cFlagT;
8838ab7a 702 delete cFlag2T;
703 delete sFlagT;
ee7de0dd 704 delete cClusterT;
8838ab7a 705 delete vectT;
ee7de0dd 706 delete injet;
707 delete sflag;
708 delete hPtTotal;
709 delete etCell;
710 delete etaCell;
711 delete phiCell;
712 delete flagCell;
8838ab7a 713 delete etCell2;
714 delete etaCell2;
715 delete phiCell2;
716 delete flagCell2;
ee7de0dd 717 delete etaJet;
718 delete phiJet;
719 delete etJet;
720 delete etsigJet;
721 delete etallJet;
722 delete ncellsJet;
723 delete multJet;
8838ab7a 724 //--- Added for jet reordering
725 delete etaJetOk;
726 delete phiJetOk;
727 delete etJetOk;
728 delete etsigJetOk;
729 delete etallJetOk;
730 delete ncellsJetOk;
731 delete multJetOk;
732 //--------------------------
e36a3f22 733 delete trackinjet;
ee7de0dd 734 delete idxjets;
735 delete percentage;
736 delete ncells;
737 delete mult;
738
ee7de0dd 739}
740
741////////////////////////////////////////////////////////////////////////
ee7de0dd 742void AliUA1JetFinderV2::RunAlgoritm(Int_t nIn, Float_t* etCell, Float_t* etaCell, Float_t* phiCell,
be6e5811 743 Int_t* flagCell, const Float_t* etCell2, const Float_t* etaCell2,
744 const Float_t* phiCell2, const Int_t* flagCell2, Float_t etbgTotal,
745 Double_t dEtTotal, Int_t& nJets, Float_t* etJet,Float_t* etaJet,
746 Float_t* phiJet, Float_t* etallJet, Int_t* ncellsJet)
ee7de0dd 747{
be6e5811 748 //
749 // Main method for jet finding
750 // UA1 base cone finder
751 //
752
8838ab7a 753 Int_t nCell = nIn;
be6e5811 754 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 755
8838ab7a 756 // Dump lego
757 // Check enough space! *to be done*
ee7de0dd 758 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 759 for(Int_t i=0; i<nCell; i++){
760 etCell[i] = etCell2[i];
761 etaCell[i] = etaCell2[i];
762 phiCell[i] = phiCell2[i];
763 flagCell[i] = flagCell2[i];
764 }
ee7de0dd 765
766 // Parameters from header
767 Float_t minmove = header->GetMinMove();
768 Float_t maxmove = header->GetMaxMove();
769 Float_t rc = header->GetRadius();
770 Float_t etseed = header->GetEtSeed();
771
8838ab7a 772 // Tmp array of jets form algoritm
ee7de0dd 773 Float_t etaAlgoJet[30];
774 Float_t phiAlgoJet[30];
775 Float_t etAlgoJet[30];
776 Int_t ncellsAlgoJet[30];
777
8838ab7a 778 // Run algorithm//
ee7de0dd 779
8838ab7a 780 // Sort cells by et
ee7de0dd 781 Int_t * index = new Int_t[nCell];
782 TMath::Sort(nCell, etCell, index);
783
8838ab7a 784 // Variable used in centroide loop
9dda5307 785 Float_t eta = 0.0;
786 Float_t phi = 0.0;
787 Float_t eta0 = 0.0;
788 Float_t phi0 = 0.0;
789 Float_t etab = 0.0;
790 Float_t phib = 0.0;
791 Float_t etas = 0.0;
792 Float_t phis = 0.0;
793 Float_t ets = 0.0;
794 Float_t deta = 0.0;
795 Float_t dphi = 0.0;
796 Float_t dr = 0.0;
797 Float_t etsb = 0.0;
ee7de0dd 798 Float_t etasb = 0.0;
799 Float_t phisb = 0.0;
9dda5307 800 Float_t dphib = 0.0;
ee7de0dd 801
8838ab7a 802 for(Int_t icell = 0; icell < nCell; icell++)
803 {
9dda5307 804 Int_t jcell = index[icell];
805 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
806 if(flagCell[jcell] != 0) continue; // if cell was used before
8838ab7a 807
9dda5307 808 eta = etaCell[jcell];
809 phi = phiCell[jcell];
810 eta0 = eta;
811 phi0 = phi;
812 etab = eta;
813 phib = phi;
814 ets = etCell[jcell];
815 etas = 0.0;
816 phis = 0.0;
817 etsb = ets;
818 etasb = 0.0;
819 phisb = 0.0;
8838ab7a 820 for(Int_t kcell =0; kcell < nCell; kcell++)
821 {
9dda5307 822 Int_t lcell = index[kcell];
823 if(lcell == jcell) continue; // cell itself
824 if(flagCell[lcell] != 0) continue; // cell used before
8838ab7a 825 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
9dda5307 826 //calculate dr
827 deta = etaCell[lcell] - eta;
8838ab7a 828 dphi = TMath::Abs(phiCell[lcell] - phi);
9dda5307 829 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
830 dr = TMath::Sqrt(deta * deta + dphi * dphi);
831 if(dr <= rc){
8838ab7a 832 // calculate offset from initiate cell
833 deta = etaCell[lcell] - eta0;
834 dphi = phiCell[lcell] - phi0;
835 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
836 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
837 etas = etas + etCell[lcell]*deta;
838 phis = phis + etCell[lcell]*dphi;
839 ets = ets + etCell[lcell];
840 //new weighted eta and phi including this cell
841 eta = eta0 + etas/ets;
842 phi = phi0 + phis/ets;
843 // if cone does not move much, just go to next step
844 dphib = TMath::Abs(phi - phib);
845 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
846 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
847 if(dr <= minmove) break;
848 // cone should not move more than max_mov
849 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
850 if(dr > maxmove){
851 eta = etab;
852 phi = phib;
853 ets = etsb;
854 etas = etasb;
855 phis = phisb;
856 } else { // store this loop information
857 etab = eta;
858 phib = phi;
859 etsb = ets;
860 etasb = etas;
861 phisb = phis;
862 }
863 } // inside cone
ee7de0dd 864 }//end of cells loop looking centroide
865
866 //avoid cones overloap (to be implemented in the future)
867
868 //flag cells in Rc, estimate total energy in cone
8838ab7a 869 Float_t etCone = 0.0;
870 Int_t nCellIn = 0;
871 Int_t nCellOut = 0;
872 rc = header->GetRadius();
873
874 for(Int_t ncell =0; ncell < nCell; ncell++)
875 {
876 if(flagCell[ncell] != 0) continue; // cell used before
877 //calculate dr
878 deta = etaCell[ncell] - eta;
879 // if(deta <= rc){ // Added to improve velocity -> to be tested
880 dphi = phiCell[ncell] - phi;
881 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
882 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
883 // if(dphi <= rc){ // Added to improve velocity -> to be tested
884 dr = TMath::Sqrt(deta * deta + dphi * dphi);
885 if(dr <= rc){ // cell in cone
886 flagCell[ncell] = -1;
887 etCone+=etCell[ncell];
888 nCellIn++;
889 }
890 else nCellOut++;
891 // } // end deta <= rc
892 // } // end dphi <= rc
ee7de0dd 893 }
894
8838ab7a 895 // select jets with et > background
896 // estimate max fluctuation of background in cone
897 Double_t ncellin = (Double_t)nCellIn;
898 Double_t ntcell = (Double_t)nCell;
899 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/(ntcell));
900 // min cone et
901 Double_t etcmin = etCone ; // could be used etCone - etmin !!
902 //decisions !! etbmax < etcmin
903
904 for(Int_t mcell =0; mcell < nCell; mcell++)
905 {
906 if(flagCell[mcell] == -1){
907 if(etbmax < etcmin)
908 flagCell[mcell] = 1; //flag cell as used
909 else
910 flagCell[mcell] = 0; // leave it free
911 }
ee7de0dd 912 }
8838ab7a 913 //store tmp jet info !!!
914 if(etbmax < etcmin)
915 {
916 etaAlgoJet[nJets] = eta;
917 phiAlgoJet[nJets] = phi;
918 etAlgoJet[nJets] = etCone;
919 ncellsAlgoJet[nJets] = nCellIn;
920 nJets++;
921 }
922
923 } // end of cells loop
924
925 for(Int_t p = 0; p < nJets; p++)
926 {
927 etaJet[p] = etaAlgoJet[p];
928 phiJet[p] = phiAlgoJet[p];
929 etJet[p] = etAlgoJet[p];
930 etallJet[p] = etAlgoJet[p];
931 ncellsJet[p] = ncellsAlgoJet[p];
932 }
933
934 //delete
935 delete index;
936
937}
938
939////////////////////////////////////////////////////////////////////////
940void AliUA1JetFinderV2::RunAlgoritmC(Float_t etbgTotal, Double_t dEtTotal, Int_t& nJets,
941 Float_t* etJet,Float_t* etaJet, Float_t* phiJet,
942 Float_t* etallJet, Int_t* ncellsJet)
943{
944 // Dump lego
945 // Check enough space! *to be done*
946 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
947 Float_t etCell[60000]; //! Cell Energy
948 Float_t etaCell[60000]; //! Cell eta
949 Float_t phiCell[60000]; //! Cell phi
950 Int_t flagCell[60000]; //! Cell flag
951
952 Int_t nCell = 0;
953 TAxis* xaxis = fLego->GetXaxis();
954 TAxis* yaxis = fLego->GetYaxis();
955 Float_t e = 0.0;
956 for (Int_t i = 1; i <= header->GetLegoNbinEta(); i++)
957 {
958 for (Int_t j = 1; j <= header->GetLegoNbinPhi(); j++)
959 {
960 e = fLego->GetBinContent(i,j);
961 if (e < 0.0) continue; // don't include this cells
962 Float_t eta = xaxis->GetBinCenter(i);
963 Float_t phi = yaxis->GetBinCenter(j);
964 etCell[nCell] = e;
965 etaCell[nCell] = eta;
966 phiCell[nCell] = phi;
967 flagCell[nCell] = 0; //default
968 nCell++;
969 }
970 }
971
972 // Parameters from header
973 Float_t minmove = header->GetMinMove();
974 Float_t maxmove = header->GetMaxMove();
975 Float_t rc = header->GetRadius();
976 Float_t etseed = header->GetEtSeed();
977
978 // Tmp array of jets form algoritm
979 Float_t etaAlgoJet[30];
980 Float_t phiAlgoJet[30];
981 Float_t etAlgoJet[30];
982 Int_t ncellsAlgoJet[30];
983
984 // Run algorithm//
985
986 // Sort cells by et
987 Int_t * index = new Int_t[nCell];
988 TMath::Sort(nCell, etCell, index);
989 // variable used in centroide loop
990 Float_t eta = 0.0;
991 Float_t phi = 0.0;
992 Float_t eta0 = 0.0;
993 Float_t phi0 = 0.0;
994 Float_t etab = 0.0;
995 Float_t phib = 0.0;
996 Float_t etas = 0.0;
997 Float_t phis = 0.0;
998 Float_t ets = 0.0;
999 Float_t deta = 0.0;
1000 Float_t dphi = 0.0;
1001 Float_t dr = 0.0;
1002 Float_t etsb = 0.0;
1003 Float_t etasb = 0.0;
1004 Float_t phisb = 0.0;
1005 Float_t dphib = 0.0;
ee7de0dd 1006
8838ab7a 1007 for(Int_t icell = 0; icell < nCell; icell++)
1008 {
1009 Int_t jcell = index[icell];
1010 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
1011 if(flagCell[jcell] != 0) continue; // if cell was used before
1012
1013 eta = etaCell[jcell];
1014 phi = phiCell[jcell];
1015 eta0 = eta;
1016 phi0 = phi;
1017 etab = eta;
1018 phib = phi;
1019 ets = etCell[jcell];
1020 etas = 0.0;
1021 phis = 0.0;
1022 etsb = ets;
1023 etasb = 0.0;
1024 phisb = 0.0;
1025 for(Int_t kcell =0; kcell < nCell; kcell++)
1026 {
1027 Int_t lcell = index[kcell];
1028 if(lcell == jcell) continue; // cell itself
1029 if(flagCell[lcell] != 0) continue; // cell used before
1030 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
1031 //calculate dr
1032 deta = etaCell[lcell] - eta;
1033 dphi = TMath::Abs(phiCell[lcell] - phi);
1034 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1035 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1036 if(dr <= rc)
1037 {
1038 // calculate offset from initiate cell
1039 deta = etaCell[lcell] - eta0;
1040 dphi = phiCell[lcell] - phi0;
1041 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
1042 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
1043 etas = etas + etCell[lcell]*deta;
1044 phis = phis + etCell[lcell]*dphi;
1045 ets = ets + etCell[lcell];
1046 //new weighted eta and phi including this cell
1047 eta = eta0 + etas/ets;
1048 phi = phi0 + phis/ets;
1049 // if cone does not move much, just go to next step
1050 dphib = TMath::Abs(phi - phib);
1051 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
1052 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
1053 if(dr <= minmove) break;
1054 // cone should not move more than max_mov
1055 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
1056 if(dr > maxmove){
1057 eta = etab;
1058 phi = phib;
1059 ets = etsb;
1060 etas = etasb;
1061 phis = phisb;
1062 } else { // store this loop information
1063 etab=eta;
1064 phib=phi;
1065 etsb = ets;
1066 etasb = etas;
1067 phisb = phis;
1068 }
1069 } // inside cone
1070 }//end of cells loop looking centroide
1071
1072 // Avoid cones overloap (to be implemented in the future)
1073
1074 // Flag cells in Rc, estimate total energy in cone
1075 Float_t etCone = 0.0;
1076 Int_t nCellIn = 0;
1077 Int_t nCellOut = 0;
1078 rc = header->GetRadius();
1079 for(Int_t ncell =0; ncell < nCell; ncell++)
1080 {
1081 if(flagCell[ncell] != 0) continue; // cell used before
1082 //calculate dr
1083 deta = etaCell[ncell] - eta;
1084 dphi = phiCell[ncell] - phi;
1085 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1086 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1087 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1088 if(dr <= rc){ // cell in cone
1089 flagCell[ncell] = -1;
1090 etCone+=etCell[ncell];
1091 nCellIn++;
1092 }
1093 else nCellOut++;
1094 }
1095
1096 // Select jets with et > background
1097 // estimate max fluctuation of background in cone
1098 Double_t ncellin = (Double_t)nCellIn;
1099 Double_t ntcell = (Double_t)nCell;
1100 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/ntcell);
1101 // min cone et
1102 Double_t etcmin = etCone ; // could be used etCone - etmin !!
1103 //decisions !! etbmax < etcmin
1104
1105 for(Int_t mcell =0; mcell < nCell; mcell++){
1106 if(flagCell[mcell] == -1){
1107 if(etbmax < etcmin)
1108 flagCell[mcell] = 1; //flag cell as used
1109 else
1110 flagCell[mcell] = 0; // leave it free
1111 }
1112 }
1113 //store tmp jet info !!!
1114
1115 if(etbmax < etcmin) {
1116 etaAlgoJet[nJets] = eta;
1117 phiAlgoJet[nJets] = phi;
1118 etAlgoJet[nJets] = etCone;
1119 ncellsAlgoJet[nJets] = nCellIn;
1120 nJets++;
1121 }
1122
1123 } // end of cells loop
ee7de0dd 1124
1125 //reorder jets by et in cone
1126 //sort jets by energy
1127 Int_t * idx = new Int_t[nJets];
1128 TMath::Sort(nJets, etAlgoJet, idx);
8838ab7a 1129 for(Int_t p = 0; p < nJets; p++)
1130 {
1131 etaJet[p] = etaAlgoJet[idx[p]];
1132 phiJet[p] = phiAlgoJet[idx[p]];
1133 etJet[p] = etAlgoJet[idx[p]];
1134 etallJet[p] = etAlgoJet[idx[p]];
1135 ncellsJet[p] = ncellsAlgoJet[idx[p]];
1136 }
1137
ee7de0dd 1138 //delete
1139 delete index;
1140 delete idx;
1141
1142}
ee7de0dd 1143
8838ab7a 1144////////////////////////////////////////////////////////////////////////
be6e5811 1145void AliUA1JetFinderV2::SubtractBackg(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN, const Float_t* ptT,
1146 const Int_t*vectT, const Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT,
1147 const Float_t* cFlag2T, const Float_t* sFlagT, Float_t* etJet, const Float_t* etaJet,
1148 const Float_t* phiJet, Float_t* etsigJet, Int_t* multJet, Int_t* injet)
ee7de0dd 1149{
8838ab7a 1150 //
1151 // Background subtraction using cone method but without correction in dE/deta distribution
1152 // Cases to take into account the EMCal geometry are included
1153 //
1154
ee7de0dd 1155 //calculate energy inside and outside cones
1156 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
08c28025 1157 fOpt = fReader->GetReaderHeader()->GetDetector();
be6e5811 1158 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 1159 Float_t rc= header->GetRadius();
1160 Float_t etIn[30];
1161 Float_t etOut = 0;
8838ab7a 1162
1163 for(Int_t j=0;j<30;j++){etIn[j]=0.;}
1164
ee7de0dd 1165 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
8838ab7a 1166
1167 for(Int_t ijet=0; ijet<nJ; ijet++){
1168
1169 Float_t deta = etaT[jpart] - etaJet[ijet];
1170 Float_t dphi = phiT[jpart] - phiJet[ijet];
1171 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1172 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1173
1174 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1175 if(dr <= rc){ // particles inside this cone
1176 multJet[ijet]+=vectT[jpart];
1177 injet[jpart] = ijet;
1178
1179 if(cFlagT[jpart] == 1 || cFlag2T[jpart] == 1){ // pt cut
1180 etIn[ijet] += ptT[jpart];
1181 if(sFlagT[jpart] == 1) etsigJet[ijet]+= ptT[jpart];
1182 }
1183 break;
1184 }
1185 }// end jets loop
1186
1187 if(injet[jpart] == -1 && (cFlagT[jpart] == 1 || cFlag2T[jpart] == 1)){
1188 etOut += ptT[jpart]; // particle outside cones and pt cut
1189 }
ee7de0dd 1190 } //end particle loop
1191
1192 //estimate jets and background areas
8838ab7a 1193 // TPC case
1194 if(fOpt == 0 || fOpt == 1){
1195 Float_t areaJet[30];
1196 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1197
1198 for(Int_t k=0; k<nJ; k++){
ee7de0dd 1199 Float_t detamax = etaJet[k] + rc;
1200 Float_t detamin = etaJet[k] - rc;
1201 Float_t accmax = 0.0; Float_t accmin = 0.0;
1202 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1203 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1204 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1205 }
1206 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1207 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1208 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1209 }
1210 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1211 areaOut = areaOut - areaJet[k];
8838ab7a 1212 }
1213 //subtract background using area method
1214 for(Int_t ljet=0; ljet<nJ; ljet++){
1215 Float_t areaRatio = areaJet[ljet]/areaOut;
1216 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1217 }
1218
1219 // estimate new total background
1220 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1221 etbgTotalN = etOut*areaT/areaOut;
1222 }
1223 else { // If EMCal included
1224 Float_t areaJet[30];
1225 Float_t areaOut = 2*(header->GetLegoEtaMax())*(header->GetLegoPhiMax() - header->GetLegoPhiMin());
1226 for(Int_t k=0; k<nJ; k++){
1227 Float_t detamax = etaJet[k] + rc;
1228 Float_t detamin = etaJet[k] - rc;
1229 Float_t dphimax = phiJet[k] + rc;
1230 Float_t dphimin = phiJet[k] - rc;
1231 Float_t eMax = header->GetLegoEtaMax();
1232 Float_t eMin = header->GetLegoEtaMin();
1233 Float_t pMax = header->GetLegoPhiMax();
1234 Float_t pMin = header->GetLegoPhiMin();
1235 Float_t accetamax = 0.0; Float_t accetamin = 0.0;
1236 Float_t accphimax = 0.0; Float_t accphimin = 0.0;
1237 if((detamax > eMax && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1238 (detamax > eMax && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1239 Float_t h = eMax - etaJet[k];
1240 accetamax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1241 }
1242 if((detamin < eMin && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1243 (detamin < eMin && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1244 Float_t h = eMax + etaJet[k];
1245 accetamin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1246 }
1247 if((dphimax > pMax && detamax >= (eMin+2*rc) && detamax <= eMax )||
1248 (dphimax > pMax && detamin <= (eMax-2*rc) && detamin >= eMin )){
1249 Float_t h = pMax - phiJet[k];
1250 accphimax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1251 }
1252 if((dphimin < eMin && detamax >= (eMin+2*rc) && detamax <= eMax )||
1253 (dphimin < eMin && detamin <= (eMax-2*rc) && detamin >= eMin )){
1254 Float_t h = phiJet[k] - pMin;
1255 accphimin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1256 }
1257
1258 if(detamax > eMax && dphimax > pMax ){
1259 Float_t he = eMax - etaJet[k];
1260 Float_t hp = pMax - phiJet[k];
1261 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1262 Float_t alphae = TMath::ACos(he/rc);
1263 Float_t alphap = TMath::ACos(hp/rc);
1264 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1265 if(rlim <= rc){
1266 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1267 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1268 }
1269 if(rlim > rc){
1270 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1271 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1272 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1273 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1274 }
1275 }
1276
1277 if(detamax > eMax && dphimin < pMin ){
1278 Float_t he = eMax - etaJet[k];
1279 Float_t hp = phiJet[k] - pMin;
1280 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1281 Float_t alphae = TMath::ACos(he/rc);
1282 Float_t alphap = TMath::ACos(hp/rc);
1283 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1284 if(rlim <= rc){
1285 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1286 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1287 }
1288 if(rlim > rc){
1289 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1290 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1291 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1292 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1293 }
1294 }
1295
1296 if(detamin < eMin && dphimax > pMax ){
1297 Float_t he = eMax + etaJet[k];
1298 Float_t hp = pMax - phiJet[k];
1299 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1300 Float_t alphae = TMath::ACos(he/rc);
1301 Float_t alphap = TMath::ACos(hp/rc);
1302 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1303 if(rlim <= rc){
1304 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1305 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1306 }
1307 if(rlim > rc){
1308 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1309 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1310 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1311 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1312 }
1313 }
1314
1315 if(detamin < eMin && dphimin < pMin ){
1316 Float_t he = eMax + etaJet[k];
1317 Float_t hp = phiJet[k] - pMin;
1318 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1319 Float_t alphae = TMath::ACos(he/rc);
1320 Float_t alphap = TMath::ACos(hp/rc);
1321 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1322 if(rlim <= rc){
1323 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1324 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1325 }
1326 if(rlim > rc){
1327 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1328 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1329 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1330 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1331 }
1332 }
1333 areaJet[k] = rc*rc*TMath::Pi() - accetamax - accetamin - accphimax - accphimin;
1334 areaOut = areaOut - areaJet[k];
1335 } // end loop on jets
1336
1337 //subtract background using area method
1338 for(Int_t ljet=0; ljet<nJ; ljet++){
1339 Float_t areaRatio = areaJet[ljet]/areaOut;
1340 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1341 }
1342
1343 // estimate new total background
1344 Float_t areaT = 2*(header->GetLegoEtaMax()*header->GetLegoPhiMax());
1345 etbgTotalN = etOut*areaT/areaOut;
1346 }
1347
1348}
1349
1350////////////////////////////////////////////////////////////////////////
be6e5811 1351void AliUA1JetFinderV2::SubtractBackgC(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN,
1352 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT,
1353 Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet, Float_t* etsigJet,
8838ab7a 1354 Int_t* multJet, Int_t* injet)
1355{
1356 //background subtraction using cone method but without correction in dE/deta distribution
1357
1358 //calculate energy inside and outside cones
1359 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1360 Float_t rc= header->GetRadius();
1361 Float_t etIn[30];
1362 Float_t etOut = 0;
1363 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1364 // if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut
1365 for(Int_t ijet=0; ijet<nJ; ijet++){
1366 Float_t deta = etaT[jpart] - etaJet[ijet];
1367 Float_t dphi = phiT[jpart] - phiJet[ijet];
1368 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1369 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1370 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1371 if(dr <= rc){ // particles inside this cone
1372 multJet[ijet]++;
1373 injet[jpart] = ijet;
1374 if((fReader->GetCutFlag(jpart)) == 1){ // pt cut
1375 etIn[ijet] += ptT[jpart];
1376 if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet]+= ptT[jpart];
1377 }
1378 break;
1379 }
1380 }// end jets loop
1381 if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1)
1382 etOut += ptT[jpart]; // particle outside cones and pt cut
1383 } //end particle loop
1384
1385 //estimate jets and background areas
1386 Float_t areaJet[30];
1387 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1388 for(Int_t k=0; k<nJ; k++){
1389 Float_t detamax = etaJet[k] + rc;
1390 Float_t detamin = etaJet[k] - rc;
1391 Float_t accmax = 0.0; Float_t accmin = 0.0;
1392 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
1393 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1394 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1395 }
1396 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
1397 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1398 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1399 }
1400 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1401 areaOut = areaOut - areaJet[k];
ee7de0dd 1402 }
1403 //subtract background using area method
1404 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1405 Float_t areaRatio = areaJet[ljet]/areaOut;
1406 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
ee7de0dd 1407 }
8838ab7a 1408
ee7de0dd 1409 // estimate new total background
1410 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1411 etbgTotalN = etOut*areaT/areaOut;
8838ab7a 1412
ee7de0dd 1413}
1414
ee7de0dd 1415
8838ab7a 1416////////////////////////////////////////////////////////////////////////
be6e5811 1417void AliUA1JetFinderV2::SubtractBackgStat(const Int_t& nIn, const Int_t&nJ,Float_t&etbgTotalN,
1418 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT,
1419 const Float_t* sFlagT, Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet,
1420 Float_t* etsigJet, Int_t* multJet, Int_t* injet)
ee7de0dd 1421{
1422
1423 //background subtraction using statistical method
1424 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1425 Float_t etbgStat = header->GetBackgStat(); // pre-calculated background
8838ab7a 1426
ee7de0dd 1427 //calculate energy inside
1428 Float_t rc= header->GetRadius();
1429 Float_t etIn[30];
8838ab7a 1430
1431 for(Int_t jpart = 0; jpart < nIn; jpart++)
1432 { // loop for all particles in array
1433
1434 for(Int_t ijet=0; ijet<nJ; ijet++)
1435 {
1436 Float_t deta = etaT[jpart] - etaJet[ijet];
1437 Float_t dphi = phiT[jpart] - phiJet[ijet];
1438 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1439 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1440 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1441 if(dr <= rc){ // particles inside this cone
1442 multJet[ijet]++;
1443 injet[jpart] = ijet;
1444 if(cFlagT[jpart] == 1){ // pt cut
1445 etIn[ijet]+= ptT[jpart];
1446 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1447 }
1448 break;
1449 }
1450 }// end jets loop
1451 } //end particle loop
1452
ee7de0dd 1453 //calc jets areas
1454 Float_t areaJet[30];
1455 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
8838ab7a 1456 for(Int_t k=0; k<nJ; k++)
1457 {
ee7de0dd 1458 Float_t detamax = etaJet[k] + rc;
1459 Float_t detamin = etaJet[k] - rc;
1460 Float_t accmax = 0.0; Float_t accmin = 0.0;
1461 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1462 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1463 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1464 }
1465 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1466 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1467 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1468 }
1469 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
8838ab7a 1470 }
ee7de0dd 1471
1472 //subtract background using area method
1473 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1474 Float_t areaRatio = areaJet[ljet]/areaOut;
1475 etJet[ljet] = etIn[ljet]-etbgStat*areaRatio; // subtraction
ee7de0dd 1476 }
8838ab7a 1477
ee7de0dd 1478 etbgTotalN = etbgStat;
ee7de0dd 1479}
1480
1481////////////////////////////////////////////////////////////////////////
be6e5811 1482void AliUA1JetFinderV2::SubtractBackgCone(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN, Float_t* ptT,
1483 Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT, const Float_t* sFlagT,
1484 Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet, Float_t* etsigJet,
8838ab7a 1485 Int_t* multJet, Int_t* injet)
ee7de0dd 1486{
8838ab7a 1487 // Cone background subtraction method taking into acount dEt/deta distribution
1488 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1489 //general
1490 Float_t rc= header->GetRadius();
1491 Float_t etamax = header->GetLegoEtaMax();
1492 Float_t etamin = header->GetLegoEtaMin();
1493 Int_t ndiv = 100;
1494
1495 // jet energy and area arrays
1496 TH1F* hEtJet[30];
1497 TH1F* hAreaJet[30];
1498 for(Int_t mjet=0; mjet<nJ; mjet++){
1499 char hEtname[256]; char hAreaname[256];
1500 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1501 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax);
1502 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax);
ee7de0dd 1503 }
8838ab7a 1504 // background energy and area
1505 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax);
1506 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax);
1507
1508 //fill energies
1509 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1510 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1511 Float_t deta = etaT[jpart] - etaJet[ijet];
1512 Float_t dphi = phiT[jpart] - phiJet[ijet];
1513 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1514 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1515 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1516 if(dr <= rc){ // particles inside this cone
1517 injet[jpart] = ijet;
1518 multJet[ijet]++;
1519 if(cFlagT[jpart] == 1){// pt cut
1520 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone
1521 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1522 }
1523 break;
1524 }
1525 }// end jets loop
1526
1527 if(injet[jpart] == -1 && cFlagT[jpart] == 1)
1528 hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1529 } //end particle loop
1530
8838ab7a 1531 //calc areas
1532 Float_t eta0 = etamin;
1533 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1534 Float_t eta1 = eta0 + etaw;
1535 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1536 Float_t etac = eta0 + etaw/2.0;
1537 Float_t areabg = etaw*2.0*TMath::Pi();
1538 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1539 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1540 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1541 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1542 Float_t areaj = 0.0;
1543 if(deta0 > rc && deta1 < rc){
1544 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1545 areaj = acc1;
1546 }
1547 if(deta0 < rc && deta1 > rc){
1548 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1549 areaj = acc0;
1550 }
1551 if(deta0 < rc && deta1 < rc){
1552 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1553 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1554 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1555 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1556 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1557 }
1558 hAreaJet[ijet]->Fill(etac,areaj);
1559 areabg = areabg - areaj;
1560 } // end jets loop
1561 hAreaBackg->Fill(etac,areabg);
1562 eta0 = eta1;
1563 eta1 = eta1 + etaw;
1564 } // end loop for all eta bins
1565
1566 //subtract background
1567 for(Int_t kjet=0; kjet<nJ; kjet++){
1568 etJet[kjet] = 0.0; // first clear etJet for this jet
1569 for(Int_t bin = 0; bin< ndiv; bin++){
1570 if(hAreaJet[kjet]->GetBinContent(bin)){
1571 Float_t areab = hAreaBackg->GetBinContent(bin);
1572 Float_t etb = hEtBackg->GetBinContent(bin);
1573 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1574 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR); //subtraction
1575 }
1576 }
1577 }
ee7de0dd 1578
8838ab7a 1579 // calc background total
1580 Double_t etOut = hEtBackg->Integral();
1581 Double_t areaOut = hAreaBackg->Integral();
1582 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1583 etbgTotalN = etOut*areaT/areaOut;
1584
1585 //delete
1586 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1587 delete hEtJet[ljet];
1588 delete hAreaJet[ljet];
1589 }
ee7de0dd 1590
8838ab7a 1591 delete hEtBackg;
1592 delete hAreaBackg;
1593}
ee7de0dd 1594
8838ab7a 1595////////////////////////////////////////////////////////////////////////
be6e5811 1596void AliUA1JetFinderV2::SubtractBackgRatio(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
1597 Float_t* ptT, Float_t* etaT, const Float_t* phiT, const Float_t* cFlagT, const Float_t* sFlagT,
1598 Float_t* etJet, const Float_t* etaJet, const Float_t* phiJet, Float_t* etsigJet,
8838ab7a 1599 Int_t* multJet, Int_t* injet)
ee7de0dd 1600{
8838ab7a 1601 // Ratio background subtraction method taking into acount dEt/deta distribution
1602 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1603 //factor F calc before
1604 Float_t bgRatioCut = header->GetBackgCutRatio();
1605
1606 //general
1607 Float_t rc= header->GetRadius();
1608 Float_t etamax = header->GetLegoEtaMax();
1609 Float_t etamin = header->GetLegoEtaMin();
1610 Int_t ndiv = 100;
1611
1612 // jet energy and area arrays
1613 TH1F* hEtJet[30];
1614 TH1F* hAreaJet[30];
1615 for(Int_t mjet=0; mjet<nJ; mjet++){
1616 char hEtname[256]; char hAreaname[256];
1617 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1618 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); // change range
1619 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); // change range
ee7de0dd 1620 }
8838ab7a 1621 // background energy and area
1622 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); // change range
1623 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); // change range
1624
1625 //fill energies
1626 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1627 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1628 Float_t deta = etaT[jpart] - etaJet[ijet];
1629 Float_t dphi = phiT[jpart] - phiJet[ijet];
1630 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1631 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1632 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1633 if(dr <= rc){ // particles inside this cone
1634 multJet[ijet]++;
1635 injet[jpart] = ijet;
1636 if(cFlagT[jpart] == 1){ //pt cut
1637 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone and pt cut
1638 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1639 }
1640 break;
1641 }
1642 }// end jets loop
1643 if(injet[jpart] == -1) hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1644 } //end particle loop
1645
8838ab7a 1646 //calc areas
1647 Float_t eta0 = etamin;
1648 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1649 Float_t eta1 = eta0 + etaw;
1650 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1651 Float_t etac = eta0 + etaw/2.0;
1652 Float_t areabg = etaw*2.0*TMath::Pi();
1653 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1654 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1655 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1656 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1657 Float_t areaj = 0.0;
1658 if(deta0 > rc && deta1 < rc){
1659 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1660 areaj = acc1;
1661 }
1662 if(deta0 < rc && deta1 > rc){
1663 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1664 areaj = acc0;
1665 }
1666 if(deta0 < rc && deta1 < rc){
1667 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1668 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1669 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1670 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1671 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1672 }
1673 hAreaJet[ijet]->Fill(etac,areaj);
1674 areabg = areabg - areaj;
1675 } // end jets loop
1676 hAreaBackg->Fill(etac,areabg);
1677 eta0 = eta1;
1678 eta1 = eta1 + etaw;
1679 } // end loop for all eta bins
1680
1681 //subtract background
1682 for(Int_t kjet=0; kjet<nJ; kjet++){
1683 etJet[kjet] = 0.0; // first clear etJet for this jet
1684 for(Int_t bin = 0; bin< ndiv; bin++){
1685 if(hAreaJet[kjet]->GetBinContent(bin)){
1686 Float_t areab = hAreaBackg->GetBinContent(bin);
1687 Float_t etb = hEtBackg->GetBinContent(bin);
1688 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1689 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR*bgRatioCut); //subtraction
1690 }
1691 }
1692 }
1693
1694 // calc background total
1695 Double_t etOut = hEtBackg->Integral();
1696 Double_t areaOut = hAreaBackg->Integral();
1697 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1698 etbgTotalN = etOut*areaT/areaOut;
1699
1700 //delete
1701 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1702 delete hEtJet[ljet];
1703 delete hAreaJet[ljet];
1704 }
1705
1706 delete hEtBackg;
1707 delete hAreaBackg;
ee7de0dd 1708}
1709
1710////////////////////////////////////////////////////////////////////////
ee7de0dd 1711void AliUA1JetFinderV2::Reset()
1712{
1713 fLego->Reset();
ee7de0dd 1714 AliJetFinder::Reset();
1715}
1716
1717////////////////////////////////////////////////////////////////////////
ee7de0dd 1718void AliUA1JetFinderV2::WriteJHeaderToFile()
1719{
1720 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1721 header->Write();
1722}
1723
1724////////////////////////////////////////////////////////////////////////
8838ab7a 1725void AliUA1JetFinderV2::InitTask(TChain* tree)
ee7de0dd 1726{
8838ab7a 1727
ee7de0dd 1728 // initializes some variables
1729 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 1730 // book lego
1731 fLego = new TH2F("legoH","eta-phi",
1732 header->GetLegoNbinEta(), header->GetLegoEtaMin(),
1733 header->GetLegoEtaMax(), header->GetLegoNbinPhi(),
1734 header->GetLegoPhiMin(), header->GetLegoPhiMax());
1735
ee7de0dd 1736 fDebug = fReader->GetReaderHeader()->GetDebug();
1737 fOpt = fReader->GetReaderHeader()->GetDetector();
8838ab7a 1738
1739 // Tasks initialization
ee7de0dd 1740 if(fOpt>0)
8838ab7a 1741 fReader->CreateTasks(tree);
ee7de0dd 1742
1743}