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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),
8838ab7a 53 fOpt(0)
ee7de0dd 54{
8838ab7a 55 //
ee7de0dd 56 // Constructor
8838ab7a 57 //
ee7de0dd 58}
59
60////////////////////////////////////////////////////////////////////////
ee7de0dd 61AliUA1JetFinderV2::~AliUA1JetFinderV2()
ee7de0dd 62{
8838ab7a 63 //
64 // Destructor
65 //
ee7de0dd 66}
67
68////////////////////////////////////////////////////////////////////////
8838ab7a 69void AliUA1JetFinderV2::FindJetsC()
70{
71 //
72 // Used to find jets using charged particle momentum information
73 //
74 // 1) Fill cell map array
75 // 2) calculate total energy and fluctuation level
76 // 3) Run algorithm
77 // 3.1) look centroides in cell map
78 // 3.2) calculate total energy in cones
79 // 3.3) flag as a possible jet
80 // 3.4) reorder cones by energy
81 // 4) subtract backg in accepted jets
82 // 5) fill AliJet list
83
84 // Transform input to pt,eta,phi plus lego
85
86 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
87 TClonesArray* lvArray = fReader->GetMomentumArray();
88 Int_t nIn = lvArray->GetEntries();
cc6a2227 89 fDebug = fHeader->GetDebug();
8838ab7a 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];
446dbc09 97 Int_t* cFlagT = new Int_t[nIn]; // Temporarily added
98 Int_t* sFlagT = new Int_t[nIn]; // Temporarily added
8838ab7a 99 Int_t* injet = new Int_t[nIn];
1dfd2819 100
101 for (Int_t i = 0; i < nIn; i++) {
102 ptT[i] = 0.;
103 etaT[i] = 0.;
104 phiT[i] = 0.;
105 cFlagT[i] = 0;
106 sFlagT[i] = 0;
107 injet[i] = 0;
108 }
8838ab7a 109 //total energy in array
110 Float_t etbgTotal = 0.0;
111 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
112
113 // load input vectors and calculate total energy in array
114 for (Int_t i = 0; i < nIn; i++){
115 TLorentzVector *lv = (TLorentzVector*) lvArray->At(i);
116 ptT[i] = lv->Pt();
117 etaT[i] = lv->Eta();
118 phiT[i] = ((lv->Phi() < 0) ? (lv->Phi()) + 2 * TMath::Pi() : lv->Phi());
be6e5811 119 cFlagT[i] = fReader->GetCutFlag(i);
120 sFlagT[i] = fReader->GetSignalFlag(i);
8838ab7a 121
122 if (fReader->GetCutFlag(i) != 1) continue;
123 fLego->Fill(etaT[i], phiT[i], ptT[i]);
124 hPtTotal->Fill(ptT[i]);
125 etbgTotal+= ptT[i];
126 }
127
8838ab7a 128
129 // calculate total energy and fluctuation in map
130 Double_t meanpt = hPtTotal->GetMean();
131 Double_t ptRMS = hPtTotal->GetRMS();
132 Double_t npart = hPtTotal->GetEntries();
133 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
134
135 // arrays to hold jets
6fefa5ce 136 Float_t etaJet[30]; // eta jet
137 Float_t phiJet[30]; // phi jet
138 Float_t etJet[30]; // et jet
139 Float_t etsigJet[30]; // signal et in jet
140 Float_t etallJet[30]; // total et in jet (tmp variable)
141 Int_t ncellsJet[30];
142 Int_t multJet[30];
8838ab7a 143 //--- Added for jet reordering at the end of the jet finding procedure
6fefa5ce 144 Float_t etaJetOk[30];
145 Float_t phiJetOk[30];
146 Float_t etJetOk[30];
147 Float_t etsigJetOk[30]; // signal et in jet
148 Float_t etallJetOk[30]; // total et in jet (tmp variable)
149 Int_t ncellsJetOk[30];
150 Int_t multJetOk[30];
8838ab7a 151 //--------------------------
152 Int_t nJets; // to hold number of jets found by algorithm
153 Int_t nj; // number of jets accepted
154 Float_t prec = header->GetPrecBg();
155 Float_t bgprec = 1;
156 while(bgprec > prec){
157 //reset jet arrays in memory
158 memset(etaJet,0,sizeof(Float_t)*30);
159 memset(phiJet,0,sizeof(Float_t)*30);
160 memset(etJet,0,sizeof(Float_t)*30);
161 memset(etallJet,0,sizeof(Float_t)*30);
162 memset(etsigJet,0,sizeof(Float_t)*30);
163 memset(ncellsJet,0,sizeof(Int_t)*30);
164 memset(multJet,0,sizeof(Int_t)*30);
165 //--- Added for jet reordering at the end of the jet finding procedure
166 memset(etaJetOk,0,sizeof(Float_t)*30);
167 memset(phiJetOk,0,sizeof(Float_t)*30);
168 memset(etJetOk,0,sizeof(Float_t)*30);
169 memset(etallJetOk,0,sizeof(Float_t)*30);
170 memset(etsigJetOk,0,sizeof(Float_t)*30);
171 memset(ncellsJetOk,0,sizeof(Int_t)*30);
172 memset(multJetOk,0,sizeof(Int_t)*30);
173 //--------------------------
174 nJets = 0;
175 nj = 0;
176
177 // reset particles-jet array in memory
178 memset(injet,-1,sizeof(Int_t)*nIn);
179 //run cone algorithm finder
180 RunAlgoritmC(etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,etallJet,ncellsJet);
181
182 //run background subtraction
183 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
184 nj = header->GetNAcceptJets();
185 else
186 nj = nJets;
187 //subtract background
188 Float_t etbgTotalN = 0.0; //new background
189 if(header->GetBackgMode() == 1) // standard
8838ab7a 190 SubtractBackgC(nIn,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
191 if(header->GetBackgMode() == 2) //cone
192 SubtractBackgCone(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
193 if(header->GetBackgMode() == 3) //ratio
194 SubtractBackgRatio(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
195 if(header->GetBackgMode() == 4) //statistic
196 SubtractBackgStat(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
197 //calc precision
446dbc09 198 if(TMath::Abs(etbgTotalN) > 0.001)
8838ab7a 199 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
200 else
201 bgprec = 0;
202 etbgTotal = etbgTotalN; // update with new background estimation
203 } //end while
204
205 // add jets to list
206 Int_t* idxjets = new Int_t[nj];
207 Int_t nselectj = 0;
208 printf("Found %d jets \n", nj);
ee7de0dd 209
8838ab7a 210 // Reorder jets by et in cone
211 Int_t * idx = new Int_t[nJets];
212 TMath::Sort(nJets, etJet, idx);
213 for(Int_t p = 0; p < nJets; p++){
214 etaJetOk[p] = etaJet[idx[p]];
215 phiJetOk[p] = phiJet[idx[p]];
216 etJetOk[p] = etJet[idx[p]];
217 etallJetOk[p] = etJet[idx[p]];
be6e5811 218 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 219 ncellsJetOk[p] = ncellsJet[idx[p]];
220 multJetOk[p] = multJet[idx[p]];
221 }
222
223 for(Int_t kj=0; kj<nj; kj++)
224 {
225 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
226 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
227 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
228 Float_t px, py,pz,en; // convert to 4-vector
229 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
230 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
231 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
232 en = TMath::Sqrt(px * px + py * py + pz * pz);
8838ab7a 233
234 AliAODJet jet(px, py, pz, en);
235 jet.Print("");
236
237 AddJet(jet);
238
239 idxjets[nselectj] = kj;
240 nselectj++;
241 }
ee7de0dd 242
8838ab7a 243 //add signal percentage and total signal in AliJets for analysis tool
244 Float_t* percentage = new Float_t[nselectj];
245 Int_t* ncells = new Int_t[nselectj];
246 Int_t* mult = new Int_t[nselectj];
247 for(Int_t i = 0; i< nselectj; i++)
248 {
249 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
250 ncells[i] = ncellsJetOk[idxjets[i]];
251 mult[i] = multJetOk[idxjets[i]];
252 }
253
254 //add particle-injet relationship ///
255 for(Int_t bj = 0; bj < nIn; bj++)
256 {
257 if(injet[bj] == -1) continue; //background particle
258 Int_t bflag = 0;
259 for(Int_t ci = 0; ci< nselectj; ci++){
260 if(injet[bj] == idxjets[ci]){
261 injet[bj]= ci;
262 bflag++;
263 break;
264 }
265 }
266 if(bflag == 0) injet[bj] = -1; // set as background particle
267 }
268
8838ab7a 269
270 //delete
271 delete[] ptT;
272 delete[] etaT;
273 delete[] phiT;
274 delete[] cFlagT;
275 delete[] sFlagT;
276 delete[] injet;
6fefa5ce 277 delete hPtTotal;
8838ab7a 278 delete[] idxjets;
6fefa5ce 279 delete[] idx;
280
8838ab7a 281 delete[] percentage;
282 delete[] ncells;
283 delete[] mult;
8838ab7a 284 //--------------------------
285
286}
ee7de0dd 287
8838ab7a 288////////////////////////////////////////////////////////////////////////
289void AliUA1JetFinderV2::FindJets()
ee7de0dd 290{
8838ab7a 291 //
292 // Used to find jets using charged particle momentum information
293 // & neutral energy from calo cells
294 //
295 // 1) Fill cell map array
296 // 2) calculate total energy and fluctuation level
297 // 3) Run algorithm
298 // 3.1) look centroides in cell map
299 // 3.2) calculate total energy in cones
300 // 3.3) flag as a possible jet
301 // 3.4) reorder cones by energy
302 // 4) subtract backg in accepted jets
303 // 5) fill AliJet list
ee7de0dd 304
305 // transform input to pt,eta,phi plus lego
306
8838ab7a 307 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
308 TClonesArray* fUnit = fReader->GetUnitArray();
309 Int_t nCand = fReader->GetNumCandidate();
310 Int_t nCandCut = fReader->GetNumCandidateCut();
311 Int_t nIn = fUnit->GetEntries();
be6e5811 312 Float_t ptMin = fReader->GetReaderHeader()->GetPtCut();
ee7de0dd 313
314 if (nIn == 0) return;
315
8838ab7a 316 Int_t nCandidateCut = 0;
317 Int_t nCandidate = 0;
318
319 nCandidate = nCand;
320 nCandidateCut = nCandCut;
321
ee7de0dd 322 // local arrays for input No Cuts
323 // Both pt < ptMin and pt > ptMin
be6e5811 324 Float_t* ptT = new Float_t[nCandidate];
325 Float_t* en2T = new Float_t[nCandidate];
326 Float_t* pt2T = new Float_t[nCandidate];
327 Int_t* detT = new Int_t[nCandidate];
328 Float_t* etaT = new Float_t[nCandidate];
329 Float_t* phiT = new Float_t[nCandidate];
446dbc09 330 Int_t* cFlagT = new Int_t[nCandidate];
331 Int_t* cFlag2T = new Int_t[nCandidate];
332 Int_t* sFlagT = new Int_t[nCandidate];
be6e5811 333 Float_t* cClusterT = new Float_t[nCandidate];
334 Int_t* vectT = new Int_t[nCandidate];
335 Int_t loop1 = 0;
336 Int_t* injet = new Int_t[nCandidate];
337 Int_t* sflag = new Int_t[nCandidate];
b5dbf075 338
339 for(Int_t i = 0; i < nCandidate; i++) {
340 ptT[i] = 0;
341 en2T[i] = 0;
342 pt2T[i] = 0;
343 detT[i] = 0;
344 etaT[i] = 0;
345 phiT[i] = 0;
346 cFlagT[i] = 0;
347 cFlag2T[i] = 0;
348 sFlagT[i] = 0;
349 cClusterT[i] = 0;
350 vectT[i] = 0;
351 injet[i] = 0;
352 sflag[i] = 0;
353}
354
be6e5811 355 TRefArray* trackRef = new TRefArray();
ee7de0dd 356
357 //total energy in array
b5dbf075 358 Float_t etbgTotal = 0.0;
be6e5811 359 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
ee7de0dd 360
361 // Input cell info
be6e5811 362 Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
363 Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
364 Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
365 Int_t *flagCell = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
366 Float_t *etCell2 = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
367 Float_t *etaCell2 = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
368 Float_t *phiCell2 = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
8838ab7a 369 Int_t *flagCell2 = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
1dfd2819 370 for(Int_t i = 0; i < nIn; i++) {
371 etCell[i] = 0.;
372 etaCell[i] = 0.;
373 phiCell[i] = 0.;
3350b142 374 flagCell[i] = 0;
1dfd2819 375 etCell2[i] = 0.;
376 etaCell2[i] = 0.;
377 phiCell2[i] = 0.;
3350b142 378 flagCell2[i] = 0;
1dfd2819 379 }
ee7de0dd 380 // Information extracted from fUnitArray
8838ab7a 381 // Load input vectors and calculate total energy in array
ee7de0dd 382 for(Int_t i=0; i<nIn; i++)
383 {
8838ab7a 384 // Recover particle information from UnitArray
385
ee7de0dd 386 AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i);
be6e5811 387 TRefArray* ref = uArray->GetUnitTrackRef();
388 Int_t nRef = ref->GetEntries();
389
ee7de0dd 390 if(uArray->GetUnitEnergy()>0.){
be6e5811 391
392 for(Int_t jpart=0; jpart<nRef;jpart++)
393 trackRef->Add((AliVTrack*)ref->At(jpart));
ee7de0dd 394 ptT[loop1] = uArray->GetUnitEnergy();
8838ab7a 395 detT[loop1] = uArray->GetUnitDetectorFlag();
ee7de0dd 396 etaT[loop1] = uArray->GetUnitEta();
397 phiT[loop1] = uArray->GetUnitPhi();
8838ab7a 398 cFlagT[loop1]= uArray->GetUnitCutFlag(); // pt cut tpc
399 cFlag2T[loop1]= uArray->GetUnitCutFlag2(); // pt cut emcal
400 sFlagT[loop1]= uArray->GetUnitSignalFlag();
be6e5811 401 vectT[loop1] = nRef;
8838ab7a 402 if(cFlagT[loop1] == 1 || cFlag2T[loop1] == 1) {
403 pt2T[loop1] = 0.;
404 en2T[loop1] = 0.;
405 if(detT[loop1]==1){
406 en2T[loop1] = ptT[loop1] - header->GetMinCellEt();
407 if(en2T[loop1] < 0) en2T[loop1]=0;
408 hPtTotal->Fill(en2T[loop1]);
409 etbgTotal += en2T[loop1];
410 }
411 if(detT[loop1]==0){ // TPC+ITS
412 Float_t pt = 0.;
be6e5811 413 for(Int_t j=0; j<nRef;j++){
8838ab7a 414 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 415 x = ((AliVTrack*)ref->At(j))->Px();
416 y = ((AliVTrack*)ref->At(j))->Py();
417 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 418 pt = TMath::Sqrt(x*x+y*y);
be6e5811 419 if(pt>ptMin) {
8838ab7a 420 pt2T[loop1] += pt;
421 en2T[loop1] += pt;
422 hPtTotal->Fill(pt);
423 etbgTotal+= pt;
424 }
425 }
426 }
427 if(detT[loop1]==2) { // EMCal
428 Float_t ptCTot = 0.;
429 Float_t pt = 0.;
430 Float_t enC = 0.;
be6e5811 431 for(Int_t j=0; j<nRef;j++){
8838ab7a 432 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 433 x = ((AliVTrack*)ref->At(j))->Px();
434 y = ((AliVTrack*)ref->At(j))->Py();
435 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 436 pt = TMath::Sqrt(x*x+y*y);
be6e5811 437 if(pt>ptMin) {
8838ab7a 438 pt2T[loop1]+=pt;
439 en2T[loop1]+=pt;
440 hPtTotal->Fill(pt);
441 etbgTotal+= pt;
442 }
443 ptCTot += pt;
444 }
445 enC = ptT[loop1] - ptCTot - header->GetMinCellEt();
446 if(enC < 0.) enC=0.;
447 en2T[loop1] += enC;
448 hPtTotal->Fill(enC);
449 etbgTotal+= enC;
450 }
ee7de0dd 451 }
452 loop1++;
453 }
ee7de0dd 454
8838ab7a 455 if(uArray->GetUnitCutFlag()==1) {
456 if(uArray->GetUnitDetectorFlag()==1){ // EMCal case
457 etCell[i] = uArray->GetUnitEnergy() - header->GetMinCellEt();
458 if ((uArray->GetUnitEnergy() - header->GetMinCellEt()) < 0.0) etCell[i]=0.;
459 etaCell[i] = uArray->GetUnitEta();
460 phiCell[i] = uArray->GetUnitPhi();
461 flagCell[i] = 0; // default
462 etCell2[i] = etCell[i];
463 etaCell2[i] = uArray->GetUnitEta();
464 phiCell2[i] = uArray->GetUnitPhi();
465 flagCell2[i] = 0; // default
466 }
467 if(uArray->GetUnitDetectorFlag()==0){ // TPC case
468 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
be6e5811 469 for(Int_t j=0; j<nRef;j++)
8838ab7a 470 {
471 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 472 x = ((AliVTrack*)ref->At(j))->Px();
473 y = ((AliVTrack*)ref->At(j))->Py();
474 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 475 pt = TMath::Sqrt(x*x+y*y);
be6e5811 476 if(pt>ptMin) {
8838ab7a 477 et1 += pt;
478 et2 += pt;
479 }
480 }
481 etCell[i] = et1;
482 etCell2[i] = et2;
483 if(et1 < 0.) etCell[i] = etCell2[i] = 0.;
484 etaCell[i] = uArray->GetUnitEta();
485 phiCell[i] = uArray->GetUnitPhi();
486 flagCell[i] = 0; // default
487 etaCell2[i] = uArray->GetUnitEta();
488 phiCell2[i] = uArray->GetUnitPhi();
489 flagCell2[i] = 0; // default
490 }
491 if(uArray->GetUnitDetectorFlag()==2){ // TPC + EMCal case
492 Float_t ptCTot = 0.;
493 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
494 Float_t enC = 0.;
be6e5811 495 for(Int_t j=0; j<nRef;j++)
8838ab7a 496 {
497 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 498 x = ((AliVTrack*)ref->At(j))->Px();
499 y = ((AliVTrack*)ref->At(j))->Py();
500 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 501 pt = TMath::Sqrt(x*x+y*y);
be6e5811 502 if(pt>ptMin) {
8838ab7a 503 et1 += pt;
504 et2 += pt;
505 }
506 ptCTot += pt;
507 }
508 enC = uArray->GetUnitEnergy() - ptCTot;
509 etCell[i] = et1 + enC - header->GetMinCellEt();
510 etCell2[i] = et2 + enC - header->GetMinCellEt();
511 if((enC + et1 - header->GetMinCellEt()) < 0.) etCell[i] = etCell2[i] = 0.;
512 etaCell[i] = uArray->GetUnitEta();
513 phiCell[i] = uArray->GetUnitPhi();
514 flagCell[i] = 0; // default
515 etaCell2[i] = uArray->GetUnitEta();
516 phiCell2[i] = uArray->GetUnitPhi();
517 flagCell2[i] = 0; // default
518 }
519 }
520 else {
521 etCell[i] = 0.;
522 etaCell[i] = uArray->GetUnitEta();
523 phiCell[i] = uArray->GetUnitPhi();
524 flagCell[i] = 0;
525 etCell2[i] = 0.;
526 etaCell2[i] = uArray->GetUnitEta();
527 phiCell2[i] = uArray->GetUnitPhi();
528 flagCell2[i] = 0;
529 }
530 } // end loop on nCandidate
531
ee7de0dd 532
533 // calculate total energy and fluctuation in map
534 Double_t meanpt = hPtTotal->GetMean();
535 Double_t ptRMS = hPtTotal->GetRMS();
536 Double_t npart = hPtTotal->GetEntries();
537 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
538
539 // arrays to hold jets
6fefa5ce 540 Float_t etaJet[30];
541 Float_t phiJet[30];
542 Float_t etJet[30];
543 Float_t etsigJet[30]; //signal et in jet
544 Float_t etallJet[30]; // total et in jet (tmp variable)
545 Int_t ncellsJet[30];
546 Int_t multJet[30];
8838ab7a 547 //--- Added by me for jet reordering at the end of the jet finding procedure
6fefa5ce 548 Float_t etaJetOk[30];
549 Float_t phiJetOk[30];
550 Float_t etJetOk[30];
551 Float_t etsigJetOk[30]; //signal et in jet
552 Float_t etallJetOk[30]; // total et in jet (tmp variable)
553 Int_t ncellsJetOk[30];
554 Int_t multJetOk[30];
8838ab7a 555 //--------------------------
556 Int_t nJets; // to hold number of jets found by algorithm
557 Int_t nj; // number of jets accepted
558 Float_t prec = header->GetPrecBg();
559 Float_t bgprec = 1;
560
ee7de0dd 561 while(bgprec > prec){
ee7de0dd 562
8838ab7a 563 //reset jet arrays in memory
564 memset(etaJet,0,sizeof(Float_t)*30);
565 memset(phiJet,0,sizeof(Float_t)*30);
566 memset(etJet,0,sizeof(Float_t)*30);
567 memset(etallJet,0,sizeof(Float_t)*30);
568 memset(etsigJet,0,sizeof(Float_t)*30);
569 memset(ncellsJet,0,sizeof(Int_t)*30);
570 memset(multJet,0,sizeof(Int_t)*30);
571 //--- Added by me for jet reordering at the end of the jet finding procedure
572 memset(etaJetOk,0,sizeof(Float_t)*30);
573 memset(phiJetOk,0,sizeof(Float_t)*30);
574 memset(etJetOk,0,sizeof(Float_t)*30);
575 memset(etallJetOk,0,sizeof(Float_t)*30);
576 memset(etsigJetOk,0,sizeof(Float_t)*30);
577 memset(ncellsJetOk,0,sizeof(Int_t)*30);
578 memset(multJetOk,0,sizeof(Int_t)*30);
579
580 nJets = 0;
581 nj = 0;
582
583 // reset particles-jet array in memory
584 memset(injet,-1,sizeof(Int_t)*nCandidate);
585 //run cone algorithm finder
586 RunAlgoritm(nIn,etCell,etaCell,phiCell,flagCell,etCell2,etaCell2,phiCell2,
587 flagCell2,etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,
588 etallJet,ncellsJet);
589
590 //run background subtraction
591 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
592 nj = header->GetNAcceptJets();
593 else
594 nj = nJets;
595
596 //subtract background
597 Float_t etbgTotalN = 0.0; //new background
598 if(header->GetBackgMode() == 1) // standard
599 SubtractBackg(nCandidate,nj,etbgTotalN,en2T,vectT,etaT,phiT,cFlagT,cFlag2T,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
600 // To be modified ------------------------
601 if(header->GetBackgMode() == 2) //cone
602 SubtractBackgCone(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
603 if(header->GetBackgMode() == 3) //ratio
604 SubtractBackgRatio(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
605 if(header->GetBackgMode() == 4) //statistic
606 SubtractBackgStat(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
607 //----------------------------------------
608 //calc precision
609 if(etbgTotalN != 0.0)
610 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
611 else
612 bgprec = 0;
613 etbgTotal = etbgTotalN; // update with new background estimation
614 } //end while
615
ee7de0dd 616 // add jets to list
617 Int_t* idxjets = new Int_t[nj];
618 Int_t nselectj = 0;
619 printf("Found %d jets \n", nj);
620
8838ab7a 621 // Reorder jets by et in cone
622 // Sort jets by energy
623 Int_t * idx = new Int_t[nJets];
624 TMath::Sort(nJets, etJet, idx);
625 for(Int_t p = 0; p < nJets; p++)
626 {
627 etaJetOk[p] = etaJet[idx[p]];
628 phiJetOk[p] = phiJet[idx[p]];
629 etJetOk[p] = etJet[idx[p]];
630 etallJetOk[p] = etJet[idx[p]];
be6e5811 631 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 632 ncellsJetOk[p] = ncellsJet[idx[p]];
633 multJetOk[p] = multJet[idx[p]];
634 }
635
e36a3f22 636 TRefArray *refs = 0;
637 Bool_t fromAod = !strcmp(fReader->ClassName(),"AliJetAODReader");
638 if (fromAod) refs = fReader->GetReferences();
639 Int_t nTracks = 0;
640 if (fromAod) nTracks = ((TRefArray*)refs)->GetEntries();
641 Int_t* trackinjet = new Int_t[nTracks];
642 for(Int_t it=0; it<nTracks; it++) trackinjet[it]=-1;
643
8838ab7a 644 for(Int_t kj=0; kj<nj; kj++)
645 {
646 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
647 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
648 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
ee7de0dd 649 Float_t px, py,pz,en; // convert to 4-vector
8838ab7a 650 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
651 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
652 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
ee7de0dd 653 en = TMath::Sqrt(px * px + py * py + pz * pz);
42b0ac89 654
ee7de0dd 655 AliAODJet jet(px, py, pz, en);
656 jet.Print("");
657
e36a3f22 658 if (fromAod){
659 for(Int_t jpart = 0; jpart < nTracks; jpart++) { // loop for all particles in array
660 Float_t deta = ((AliAODTrack*)refs->At(jpart))->Eta() - etaJetOk[kj];
661 Float_t dphi = ((AliAODTrack*)refs->At(jpart))->Phi() - phiJetOk[kj];
662 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
663 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
e59b9a1c 664
e36a3f22 665 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
e59b9a1c 666 if(dr <= header->GetRadius() && fReader->GetCutFlag(jpart) == 1) {
667 // particles inside this cone
668 if(trackinjet[jpart]==-1) {
669 trackinjet[jpart] = kj;
670 } else if(fDebug>10) {
671 printf("The track already belongs to jet %d \n",trackinjet[jpart]);
672 }
673 }
e36a3f22 674 if(trackinjet[jpart]==kj)
e59b9a1c 675 jet.AddTrack(refs->At(jpart)); // check if the particle belongs to the jet and add the ref
e36a3f22 676 }
677 }
678
ee7de0dd 679 AddJet(jet);
680
681 idxjets[nselectj] = kj;
682 nselectj++;
8838ab7a 683 }
684
ee7de0dd 685 //add signal percentage and total signal in AliJets for analysis tool
686 Float_t* percentage = new Float_t[nselectj];
687 Int_t* ncells = new Int_t[nselectj];
688 Int_t* mult = new Int_t[nselectj];
8838ab7a 689 for(Int_t i = 0; i< nselectj; i++)
690 {
691 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
692 ncells[i] = ncellsJetOk[idxjets[i]];
693 mult[i] = multJetOk[idxjets[i]];
694 }
695
696 //add particle-injet relationship ///
697 for(Int_t bj = 0; bj < nCandidate; bj++)
698 {
699 if(injet[bj] == -1) continue; //background particle
700 Int_t bflag = 0;
701 for(Int_t ci = 0; ci< nselectj; ci++){
702 if(injet[bj] == idxjets[ci]){
703 injet[bj]= ci;
704 bflag++;
705 break;
706 }
707 }
708 if(bflag == 0) injet[bj] = -1; // set as background particle
ee7de0dd 709 }
8838ab7a 710
ee7de0dd 711
712 //delete
6fefa5ce 713 delete [] ptT;
714 delete [] en2T;
715 delete [] pt2T;
716 delete [] etaT;
717 delete [] phiT;
718 delete [] detT;
719 delete [] cFlagT;
720 delete [] cFlag2T;
721 delete [] sFlagT;
722 delete [] cClusterT;
723 delete [] vectT;
724 delete [] injet;
725 delete [] sflag;
be6e5811 726 trackRef->Delete();
727 delete trackRef;
6fefa5ce 728
ee7de0dd 729 delete hPtTotal;
6fefa5ce 730 delete [] etCell;
731 delete [] etaCell;
732 delete [] phiCell;
733 delete [] flagCell;
734 delete [] etCell2;
735 delete [] etaCell2;
736 delete [] phiCell2;
737 delete [] flagCell2;
8838ab7a 738 //--------------------------
6fefa5ce 739 delete [] idxjets;
740 delete [] idx;
741 delete [] trackinjet;
742
743 delete [] percentage;
744 delete [] ncells;
745 delete [] mult;
ee7de0dd 746
ee7de0dd 747}
748
749////////////////////////////////////////////////////////////////////////
c345674e 750void AliUA1JetFinderV2::RunAlgoritm(Int_t nIn, Float_t* etCell, Float_t* const etaCell, Float_t* phiCell,
751 Int_t* const flagCell, const Float_t* etCell2, const Float_t* etaCell2, const Float_t* phiCell2,
752 const Int_t* flagCell2, Float_t etbgTotal, Double_t dEtTotal,
753 Int_t& nJets, Float_t* const etJet, Float_t* const etaJet, Float_t* const phiJet,
754 Float_t* const etallJet, Int_t* const ncellsJet)
ee7de0dd 755{
be6e5811 756 //
757 // Main method for jet finding
758 // UA1 base cone finder
759 //
760
cc6a2227 761 Int_t nCell = nIn;
ee7de0dd 762
8838ab7a 763 // Dump lego
764 // Check enough space! *to be done*
ee7de0dd 765 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 766 for(Int_t i=0; i<nCell; i++){
767 etCell[i] = etCell2[i];
768 etaCell[i] = etaCell2[i];
769 phiCell[i] = phiCell2[i];
770 flagCell[i] = flagCell2[i];
771 }
ee7de0dd 772
773 // Parameters from header
774 Float_t minmove = header->GetMinMove();
775 Float_t maxmove = header->GetMaxMove();
776 Float_t rc = header->GetRadius();
777 Float_t etseed = header->GetEtSeed();
778
8838ab7a 779 // Tmp array of jets form algoritm
1dfd2819 780 Float_t etaAlgoJet[30] = {0.};
781 Float_t phiAlgoJet[30] = {0.};
782 Float_t etAlgoJet[30] = {0.};
3350b142 783 Int_t ncellsAlgoJet[30] = {0};
ee7de0dd 784
8838ab7a 785 // Run algorithm//
ee7de0dd 786
8838ab7a 787 // Sort cells by et
ee7de0dd 788 Int_t * index = new Int_t[nCell];
789 TMath::Sort(nCell, etCell, index);
790
8838ab7a 791 // Variable used in centroide loop
9dda5307 792 Float_t eta = 0.0;
793 Float_t phi = 0.0;
794 Float_t eta0 = 0.0;
795 Float_t phi0 = 0.0;
796 Float_t etab = 0.0;
797 Float_t phib = 0.0;
798 Float_t etas = 0.0;
799 Float_t phis = 0.0;
800 Float_t ets = 0.0;
801 Float_t deta = 0.0;
802 Float_t dphi = 0.0;
803 Float_t dr = 0.0;
804 Float_t etsb = 0.0;
ee7de0dd 805 Float_t etasb = 0.0;
806 Float_t phisb = 0.0;
9dda5307 807 Float_t dphib = 0.0;
ee7de0dd 808
8838ab7a 809 for(Int_t icell = 0; icell < nCell; icell++)
810 {
9dda5307 811 Int_t jcell = index[icell];
812 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
813 if(flagCell[jcell] != 0) continue; // if cell was used before
8838ab7a 814
9dda5307 815 eta = etaCell[jcell];
816 phi = phiCell[jcell];
817 eta0 = eta;
818 phi0 = phi;
819 etab = eta;
820 phib = phi;
821 ets = etCell[jcell];
822 etas = 0.0;
823 phis = 0.0;
824 etsb = ets;
825 etasb = 0.0;
826 phisb = 0.0;
8838ab7a 827 for(Int_t kcell =0; kcell < nCell; kcell++)
828 {
9dda5307 829 Int_t lcell = index[kcell];
830 if(lcell == jcell) continue; // cell itself
831 if(flagCell[lcell] != 0) continue; // cell used before
8838ab7a 832 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
9dda5307 833 //calculate dr
834 deta = etaCell[lcell] - eta;
8838ab7a 835 dphi = TMath::Abs(phiCell[lcell] - phi);
9dda5307 836 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
837 dr = TMath::Sqrt(deta * deta + dphi * dphi);
838 if(dr <= rc){
8838ab7a 839 // calculate offset from initiate cell
840 deta = etaCell[lcell] - eta0;
841 dphi = phiCell[lcell] - phi0;
842 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
843 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
844 etas = etas + etCell[lcell]*deta;
845 phis = phis + etCell[lcell]*dphi;
846 ets = ets + etCell[lcell];
847 //new weighted eta and phi including this cell
848 eta = eta0 + etas/ets;
849 phi = phi0 + phis/ets;
850 // if cone does not move much, just go to next step
851 dphib = TMath::Abs(phi - phib);
852 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
853 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
854 if(dr <= minmove) break;
855 // cone should not move more than max_mov
856 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
857 if(dr > maxmove){
858 eta = etab;
859 phi = phib;
860 ets = etsb;
861 etas = etasb;
862 phis = phisb;
863 } else { // store this loop information
864 etab = eta;
865 phib = phi;
866 etsb = ets;
867 etasb = etas;
868 phisb = phis;
869 }
870 } // inside cone
ee7de0dd 871 }//end of cells loop looking centroide
872
873 //avoid cones overloap (to be implemented in the future)
874
875 //flag cells in Rc, estimate total energy in cone
8838ab7a 876 Float_t etCone = 0.0;
877 Int_t nCellIn = 0;
878 Int_t nCellOut = 0;
879 rc = header->GetRadius();
880
881 for(Int_t ncell =0; ncell < nCell; ncell++)
882 {
883 if(flagCell[ncell] != 0) continue; // cell used before
884 //calculate dr
885 deta = etaCell[ncell] - eta;
886 // if(deta <= rc){ // Added to improve velocity -> to be tested
887 dphi = phiCell[ncell] - phi;
888 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
889 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
890 // if(dphi <= rc){ // Added to improve velocity -> to be tested
891 dr = TMath::Sqrt(deta * deta + dphi * dphi);
892 if(dr <= rc){ // cell in cone
893 flagCell[ncell] = -1;
894 etCone+=etCell[ncell];
895 nCellIn++;
896 }
897 else nCellOut++;
898 // } // end deta <= rc
899 // } // end dphi <= rc
ee7de0dd 900 }
901
8838ab7a 902 // select jets with et > background
903 // estimate max fluctuation of background in cone
904 Double_t ncellin = (Double_t)nCellIn;
905 Double_t ntcell = (Double_t)nCell;
906 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/(ntcell));
907 // min cone et
908 Double_t etcmin = etCone ; // could be used etCone - etmin !!
909 //decisions !! etbmax < etcmin
910
911 for(Int_t mcell =0; mcell < nCell; mcell++)
912 {
913 if(flagCell[mcell] == -1){
914 if(etbmax < etcmin)
915 flagCell[mcell] = 1; //flag cell as used
916 else
917 flagCell[mcell] = 0; // leave it free
918 }
ee7de0dd 919 }
8838ab7a 920 //store tmp jet info !!!
921 if(etbmax < etcmin)
922 {
923 etaAlgoJet[nJets] = eta;
924 phiAlgoJet[nJets] = phi;
925 etAlgoJet[nJets] = etCone;
926 ncellsAlgoJet[nJets] = nCellIn;
927 nJets++;
928 }
929
930 } // end of cells loop
931
932 for(Int_t p = 0; p < nJets; p++)
933 {
934 etaJet[p] = etaAlgoJet[p];
935 phiJet[p] = phiAlgoJet[p];
936 etJet[p] = etAlgoJet[p];
937 etallJet[p] = etAlgoJet[p];
938 ncellsJet[p] = ncellsAlgoJet[p];
939 }
940
941 //delete
4ce766eb 942 delete[] index;
8838ab7a 943
944}
945
946////////////////////////////////////////////////////////////////////////
947void AliUA1JetFinderV2::RunAlgoritmC(Float_t etbgTotal, Double_t dEtTotal, Int_t& nJets,
c345674e 948 Float_t* const etJet,Float_t* const etaJet, Float_t* const phiJet,
949 Float_t* const etallJet, Int_t* const ncellsJet)
8838ab7a 950{
951 // Dump lego
952 // Check enough space! *to be done*
953 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
954 Float_t etCell[60000]; //! Cell Energy
955 Float_t etaCell[60000]; //! Cell eta
956 Float_t phiCell[60000]; //! Cell phi
957 Int_t flagCell[60000]; //! Cell flag
958
959 Int_t nCell = 0;
960 TAxis* xaxis = fLego->GetXaxis();
961 TAxis* yaxis = fLego->GetYaxis();
962 Float_t e = 0.0;
963 for (Int_t i = 1; i <= header->GetLegoNbinEta(); i++)
964 {
965 for (Int_t j = 1; j <= header->GetLegoNbinPhi(); j++)
966 {
967 e = fLego->GetBinContent(i,j);
968 if (e < 0.0) continue; // don't include this cells
969 Float_t eta = xaxis->GetBinCenter(i);
970 Float_t phi = yaxis->GetBinCenter(j);
971 etCell[nCell] = e;
972 etaCell[nCell] = eta;
973 phiCell[nCell] = phi;
974 flagCell[nCell] = 0; //default
975 nCell++;
976 }
977 }
978
979 // Parameters from header
980 Float_t minmove = header->GetMinMove();
981 Float_t maxmove = header->GetMaxMove();
982 Float_t rc = header->GetRadius();
983 Float_t etseed = header->GetEtSeed();
984
985 // Tmp array of jets form algoritm
a88d89ce 986 Float_t etaAlgoJet[30] = {0.};
987 Float_t phiAlgoJet[30] = {0.};
988 Float_t etAlgoJet[30] = {0.};
989 Int_t ncellsAlgoJet[30] = {0};
8838ab7a 990
991 // Run algorithm//
992
993 // Sort cells by et
994 Int_t * index = new Int_t[nCell];
995 TMath::Sort(nCell, etCell, index);
996 // variable used in centroide loop
997 Float_t eta = 0.0;
998 Float_t phi = 0.0;
999 Float_t eta0 = 0.0;
1000 Float_t phi0 = 0.0;
1001 Float_t etab = 0.0;
1002 Float_t phib = 0.0;
1003 Float_t etas = 0.0;
1004 Float_t phis = 0.0;
1005 Float_t ets = 0.0;
1006 Float_t deta = 0.0;
1007 Float_t dphi = 0.0;
1008 Float_t dr = 0.0;
1009 Float_t etsb = 0.0;
1010 Float_t etasb = 0.0;
1011 Float_t phisb = 0.0;
1012 Float_t dphib = 0.0;
ee7de0dd 1013
8838ab7a 1014 for(Int_t icell = 0; icell < nCell; icell++)
1015 {
1016 Int_t jcell = index[icell];
1017 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
1018 if(flagCell[jcell] != 0) continue; // if cell was used before
1019
1020 eta = etaCell[jcell];
1021 phi = phiCell[jcell];
1022 eta0 = eta;
1023 phi0 = phi;
1024 etab = eta;
1025 phib = phi;
1026 ets = etCell[jcell];
1027 etas = 0.0;
1028 phis = 0.0;
1029 etsb = ets;
1030 etasb = 0.0;
1031 phisb = 0.0;
1032 for(Int_t kcell =0; kcell < nCell; kcell++)
1033 {
1034 Int_t lcell = index[kcell];
1035 if(lcell == jcell) continue; // cell itself
1036 if(flagCell[lcell] != 0) continue; // cell used before
1037 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
1038 //calculate dr
1039 deta = etaCell[lcell] - eta;
1040 dphi = TMath::Abs(phiCell[lcell] - phi);
1041 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1042 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1043 if(dr <= rc)
1044 {
1045 // calculate offset from initiate cell
1046 deta = etaCell[lcell] - eta0;
1047 dphi = phiCell[lcell] - phi0;
1048 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
1049 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
1050 etas = etas + etCell[lcell]*deta;
1051 phis = phis + etCell[lcell]*dphi;
1052 ets = ets + etCell[lcell];
1053 //new weighted eta and phi including this cell
1054 eta = eta0 + etas/ets;
1055 phi = phi0 + phis/ets;
1056 // if cone does not move much, just go to next step
1057 dphib = TMath::Abs(phi - phib);
1058 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
1059 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
1060 if(dr <= minmove) break;
1061 // cone should not move more than max_mov
1062 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
1063 if(dr > maxmove){
1064 eta = etab;
1065 phi = phib;
1066 ets = etsb;
1067 etas = etasb;
1068 phis = phisb;
1069 } else { // store this loop information
1070 etab=eta;
1071 phib=phi;
1072 etsb = ets;
1073 etasb = etas;
1074 phisb = phis;
1075 }
1076 } // inside cone
1077 }//end of cells loop looking centroide
1078
1079 // Avoid cones overloap (to be implemented in the future)
1080
1081 // Flag cells in Rc, estimate total energy in cone
1082 Float_t etCone = 0.0;
1083 Int_t nCellIn = 0;
1084 Int_t nCellOut = 0;
1085 rc = header->GetRadius();
1086 for(Int_t ncell =0; ncell < nCell; ncell++)
1087 {
1088 if(flagCell[ncell] != 0) continue; // cell used before
1089 //calculate dr
1090 deta = etaCell[ncell] - eta;
1091 dphi = phiCell[ncell] - phi;
1092 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1093 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1094 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1095 if(dr <= rc){ // cell in cone
1096 flagCell[ncell] = -1;
1097 etCone+=etCell[ncell];
1098 nCellIn++;
1099 }
1100 else nCellOut++;
1101 }
1102
1103 // Select jets with et > background
1104 // estimate max fluctuation of background in cone
1105 Double_t ncellin = (Double_t)nCellIn;
1106 Double_t ntcell = (Double_t)nCell;
1107 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/ntcell);
1108 // min cone et
1109 Double_t etcmin = etCone ; // could be used etCone - etmin !!
1110 //decisions !! etbmax < etcmin
1111
1112 for(Int_t mcell =0; mcell < nCell; mcell++){
1113 if(flagCell[mcell] == -1){
1114 if(etbmax < etcmin)
1115 flagCell[mcell] = 1; //flag cell as used
1116 else
1117 flagCell[mcell] = 0; // leave it free
1118 }
1119 }
1120 //store tmp jet info !!!
1121
1122 if(etbmax < etcmin) {
1123 etaAlgoJet[nJets] = eta;
1124 phiAlgoJet[nJets] = phi;
1125 etAlgoJet[nJets] = etCone;
1126 ncellsAlgoJet[nJets] = nCellIn;
1127 nJets++;
1128 }
1129
1130 } // end of cells loop
ee7de0dd 1131
1132 //reorder jets by et in cone
1133 //sort jets by energy
1134 Int_t * idx = new Int_t[nJets];
1135 TMath::Sort(nJets, etAlgoJet, idx);
8838ab7a 1136 for(Int_t p = 0; p < nJets; p++)
1137 {
1138 etaJet[p] = etaAlgoJet[idx[p]];
1139 phiJet[p] = phiAlgoJet[idx[p]];
1140 etJet[p] = etAlgoJet[idx[p]];
1141 etallJet[p] = etAlgoJet[idx[p]];
1142 ncellsJet[p] = ncellsAlgoJet[idx[p]];
1143 }
1144
ee7de0dd 1145 //delete
4ce766eb 1146 delete [] index;
1147 delete [] idx;
ee7de0dd 1148
1149}
ee7de0dd 1150
8838ab7a 1151////////////////////////////////////////////////////////////////////////
c345674e 1152void AliUA1JetFinderV2::SubtractBackg(const Int_t& nIn, const Int_t&nJ, Float_t& etbgTotalN, const Float_t* ptT, const Int_t* vectT,
1153 const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* cFlag2T,
1154 const Int_t* sFlagT, Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1155 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1156{
8838ab7a 1157 //
1158 // Background subtraction using cone method but without correction in dE/deta distribution
1159 // Cases to take into account the EMCal geometry are included
1160 //
1161
ee7de0dd 1162 //calculate energy inside and outside cones
1163 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
08c28025 1164 fOpt = fReader->GetReaderHeader()->GetDetector();
ee7de0dd 1165 Float_t rc= header->GetRadius();
1dfd2819 1166 Float_t etIn[30] = {0.};
ee7de0dd 1167 Float_t etOut = 0;
1dfd2819 1168
ee7de0dd 1169 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
8838ab7a 1170
1171 for(Int_t ijet=0; ijet<nJ; ijet++){
1172
1173 Float_t deta = etaT[jpart] - etaJet[ijet];
1174 Float_t dphi = phiT[jpart] - phiJet[ijet];
1175 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1176 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1177
1178 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1179 if(dr <= rc){ // particles inside this cone
1180 multJet[ijet]+=vectT[jpart];
1181 injet[jpart] = ijet;
1182
1183 if(cFlagT[jpart] == 1 || cFlag2T[jpart] == 1){ // pt cut
1184 etIn[ijet] += ptT[jpart];
1185 if(sFlagT[jpart] == 1) etsigJet[ijet]+= ptT[jpart];
1186 }
1187 break;
1188 }
1189 }// end jets loop
1190
1191 if(injet[jpart] == -1 && (cFlagT[jpart] == 1 || cFlag2T[jpart] == 1)){
1192 etOut += ptT[jpart]; // particle outside cones and pt cut
1193 }
ee7de0dd 1194 } //end particle loop
1195
1196 //estimate jets and background areas
8838ab7a 1197 // TPC case
1198 if(fOpt == 0 || fOpt == 1){
1199 Float_t areaJet[30];
1200 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1201
1202 for(Int_t k=0; k<nJ; k++){
ee7de0dd 1203 Float_t detamax = etaJet[k] + rc;
1204 Float_t detamin = etaJet[k] - rc;
1205 Float_t accmax = 0.0; Float_t accmin = 0.0;
1206 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1207 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1208 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1209 }
1210 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1211 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1212 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1213 }
1214 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1215 areaOut = areaOut - areaJet[k];
8838ab7a 1216 }
1217 //subtract background using area method
1218 for(Int_t ljet=0; ljet<nJ; ljet++){
1219 Float_t areaRatio = areaJet[ljet]/areaOut;
1220 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1221 }
1222
1223 // estimate new total background
1224 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1225 etbgTotalN = etOut*areaT/areaOut;
1226 }
1227 else { // If EMCal included
1228 Float_t areaJet[30];
1229 Float_t areaOut = 2*(header->GetLegoEtaMax())*(header->GetLegoPhiMax() - header->GetLegoPhiMin());
1230 for(Int_t k=0; k<nJ; k++){
1231 Float_t detamax = etaJet[k] + rc;
1232 Float_t detamin = etaJet[k] - rc;
1233 Float_t dphimax = phiJet[k] + rc;
1234 Float_t dphimin = phiJet[k] - rc;
1235 Float_t eMax = header->GetLegoEtaMax();
1236 Float_t eMin = header->GetLegoEtaMin();
1237 Float_t pMax = header->GetLegoPhiMax();
1238 Float_t pMin = header->GetLegoPhiMin();
1239 Float_t accetamax = 0.0; Float_t accetamin = 0.0;
1240 Float_t accphimax = 0.0; Float_t accphimin = 0.0;
1241 if((detamax > eMax && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1242 (detamax > eMax && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1243 Float_t h = eMax - etaJet[k];
1244 accetamax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1245 }
1246 if((detamin < eMin && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1247 (detamin < eMin && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1248 Float_t h = eMax + etaJet[k];
1249 accetamin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1250 }
1251 if((dphimax > pMax && detamax >= (eMin+2*rc) && detamax <= eMax )||
1252 (dphimax > pMax && detamin <= (eMax-2*rc) && detamin >= eMin )){
1253 Float_t h = pMax - phiJet[k];
1254 accphimax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1255 }
1256 if((dphimin < eMin && detamax >= (eMin+2*rc) && detamax <= eMax )||
1257 (dphimin < eMin && detamin <= (eMax-2*rc) && detamin >= eMin )){
1258 Float_t h = phiJet[k] - pMin;
1259 accphimin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1260 }
1261
1262 if(detamax > eMax && dphimax > pMax ){
1263 Float_t he = eMax - etaJet[k];
1264 Float_t hp = pMax - phiJet[k];
1265 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1266 Float_t alphae = TMath::ACos(he/rc);
1267 Float_t alphap = TMath::ACos(hp/rc);
1268 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
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 }
1273 if(rlim > rc){
1274 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1275 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1276 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1277 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1278 }
1279 }
1280
1281 if(detamax > eMax && dphimin < pMin ){
1282 Float_t he = eMax - etaJet[k];
1283 Float_t hp = phiJet[k] - pMin;
1284 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1285 Float_t alphae = TMath::ACos(he/rc);
1286 Float_t alphap = TMath::ACos(hp/rc);
1287 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
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 }
1292 if(rlim > rc){
1293 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1294 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1295 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1296 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1297 }
1298 }
1299
1300 if(detamin < eMin && dphimax > pMax ){
1301 Float_t he = eMax + etaJet[k];
1302 Float_t hp = pMax - phiJet[k];
1303 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1304 Float_t alphae = TMath::ACos(he/rc);
1305 Float_t alphap = TMath::ACos(hp/rc);
1306 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
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 }
1311 if(rlim > rc){
1312 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1313 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1314 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1315 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1316 }
1317 }
1318
1319 if(detamin < eMin && dphimin < pMin ){
1320 Float_t he = eMax + etaJet[k];
1321 Float_t hp = phiJet[k] - pMin;
1322 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1323 Float_t alphae = TMath::ACos(he/rc);
1324 Float_t alphap = TMath::ACos(hp/rc);
1325 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
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 }
1330 if(rlim > rc){
1331 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1332 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1333 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1334 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1335 }
1336 }
1337 areaJet[k] = rc*rc*TMath::Pi() - accetamax - accetamin - accphimax - accphimin;
1338 areaOut = areaOut - areaJet[k];
1339 } // end loop on jets
1340
1341 //subtract background using area method
1342 for(Int_t ljet=0; ljet<nJ; ljet++){
1343 Float_t areaRatio = areaJet[ljet]/areaOut;
1344 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1345 }
1346
1347 // estimate new total background
1348 Float_t areaT = 2*(header->GetLegoEtaMax()*header->GetLegoPhiMax());
1349 etbgTotalN = etOut*areaT/areaOut;
1350 }
1351
1352}
1353
1354////////////////////////////////////////////////////////////////////////
be6e5811 1355void AliUA1JetFinderV2::SubtractBackgC(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN,
c345674e 1356 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT,
1357 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1358 Float_t* const etsigJet,Int_t* const multJet, Int_t* const injet)
8838ab7a 1359{
1360 //background subtraction using cone method but without correction in dE/deta distribution
1361
1362 //calculate energy inside and outside cones
1363 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1364 Float_t rc= header->GetRadius();
a88d89ce 1365 Float_t etIn[30] = {0.};
8838ab7a 1366 Float_t etOut = 0;
1367 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1368 // if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut
1369 for(Int_t ijet=0; ijet<nJ; ijet++){
1370 Float_t deta = etaT[jpart] - etaJet[ijet];
1371 Float_t dphi = phiT[jpart] - phiJet[ijet];
1372 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1373 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1374 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1375 if(dr <= rc){ // particles inside this cone
1376 multJet[ijet]++;
1377 injet[jpart] = ijet;
1378 if((fReader->GetCutFlag(jpart)) == 1){ // pt cut
1379 etIn[ijet] += ptT[jpart];
1380 if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet]+= ptT[jpart];
1381 }
1382 break;
1383 }
1384 }// end jets loop
1385 if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1)
1386 etOut += ptT[jpart]; // particle outside cones and pt cut
1387 } //end particle loop
1388
1389 //estimate jets and background areas
1390 Float_t areaJet[30];
1391 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1392 for(Int_t k=0; k<nJ; k++){
1393 Float_t detamax = etaJet[k] + rc;
1394 Float_t detamin = etaJet[k] - rc;
1395 Float_t accmax = 0.0; Float_t accmin = 0.0;
1396 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
1397 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1398 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1399 }
1400 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
1401 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1402 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1403 }
1404 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1405 areaOut = areaOut - areaJet[k];
ee7de0dd 1406 }
1407 //subtract background using area method
1408 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1409 Float_t areaRatio = areaJet[ljet]/areaOut;
1410 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
ee7de0dd 1411 }
8838ab7a 1412
ee7de0dd 1413 // estimate new total background
1414 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1415 etbgTotalN = etOut*areaT/areaOut;
8838ab7a 1416
ee7de0dd 1417}
1418
ee7de0dd 1419
8838ab7a 1420////////////////////////////////////////////////////////////////////////
be6e5811 1421void AliUA1JetFinderV2::SubtractBackgStat(const Int_t& nIn, const Int_t&nJ,Float_t&etbgTotalN,
c345674e 1422 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT,
1423 const Int_t* sFlagT, Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1424 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1425{
1426
1427 //background subtraction using statistical method
1428 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1429 Float_t etbgStat = header->GetBackgStat(); // pre-calculated background
8838ab7a 1430
ee7de0dd 1431 //calculate energy inside
1432 Float_t rc= header->GetRadius();
1dfd2819 1433 Float_t etIn[30] = {0.};
8838ab7a 1434
1435 for(Int_t jpart = 0; jpart < nIn; jpart++)
1436 { // loop for all particles in array
1437
1438 for(Int_t ijet=0; ijet<nJ; ijet++)
1439 {
1440 Float_t deta = etaT[jpart] - etaJet[ijet];
1441 Float_t dphi = phiT[jpart] - phiJet[ijet];
1442 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1443 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1444 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1445 if(dr <= rc){ // particles inside this cone
1446 multJet[ijet]++;
1447 injet[jpart] = ijet;
1448 if(cFlagT[jpart] == 1){ // pt cut
1449 etIn[ijet]+= ptT[jpart];
1450 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1451 }
1452 break;
1453 }
1454 }// end jets loop
1455 } //end particle loop
1456
ee7de0dd 1457 //calc jets areas
1458 Float_t areaJet[30];
1459 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
8838ab7a 1460 for(Int_t k=0; k<nJ; k++)
1461 {
ee7de0dd 1462 Float_t detamax = etaJet[k] + rc;
1463 Float_t detamin = etaJet[k] - rc;
1464 Float_t accmax = 0.0; Float_t accmin = 0.0;
1465 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1466 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1467 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1468 }
1469 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1470 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1471 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1472 }
1473 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
8838ab7a 1474 }
ee7de0dd 1475
1476 //subtract background using area method
1477 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1478 Float_t areaRatio = areaJet[ljet]/areaOut;
1479 etJet[ljet] = etIn[ljet]-etbgStat*areaRatio; // subtraction
ee7de0dd 1480 }
8838ab7a 1481
ee7de0dd 1482 etbgTotalN = etbgStat;
ee7de0dd 1483}
1484
1485////////////////////////////////////////////////////////////////////////
c345674e 1486void AliUA1JetFinderV2::SubtractBackgCone(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
1240edf5 1487 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* sFlagT,
c345674e 1488 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1489 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1490{
8838ab7a 1491 // Cone background subtraction method taking into acount dEt/deta distribution
1492 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1493 //general
1494 Float_t rc= header->GetRadius();
1495 Float_t etamax = header->GetLegoEtaMax();
1496 Float_t etamin = header->GetLegoEtaMin();
1497 Int_t ndiv = 100;
1498
1499 // jet energy and area arrays
1500 TH1F* hEtJet[30];
1501 TH1F* hAreaJet[30];
1502 for(Int_t mjet=0; mjet<nJ; mjet++){
1503 char hEtname[256]; char hAreaname[256];
e3d2ffb4 1504 snprintf(hEtname, 256, "hEtJet%d", mjet); snprintf(hAreaname, 256, "hAreaJet%d", mjet);
8838ab7a 1505 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax);
1506 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax);
ee7de0dd 1507 }
8838ab7a 1508 // background energy and area
1509 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax);
1510 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax);
1511
1512 //fill energies
1513 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1514 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1515 Float_t deta = etaT[jpart] - etaJet[ijet];
1516 Float_t dphi = phiT[jpart] - phiJet[ijet];
1517 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1518 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1519 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1520 if(dr <= rc){ // particles inside this cone
1521 injet[jpart] = ijet;
1522 multJet[ijet]++;
1523 if(cFlagT[jpart] == 1){// pt cut
1524 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone
1525 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1526 }
1527 break;
1528 }
1529 }// end jets loop
1530
1531 if(injet[jpart] == -1 && cFlagT[jpart] == 1)
1532 hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1533 } //end particle loop
1534
8838ab7a 1535 //calc areas
1536 Float_t eta0 = etamin;
1537 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1538 Float_t eta1 = eta0 + etaw;
1539 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1540 Float_t etac = eta0 + etaw/2.0;
1541 Float_t areabg = etaw*2.0*TMath::Pi();
1542 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1543 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1544 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1545 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1546 Float_t areaj = 0.0;
1547 if(deta0 > rc && deta1 < rc){
1548 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1549 areaj = acc1;
1550 }
1551 if(deta0 < rc && deta1 > rc){
1552 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1553 areaj = acc0;
1554 }
1555 if(deta0 < rc && deta1 < rc){
1556 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1557 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1558 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1559 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1560 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1561 }
1562 hAreaJet[ijet]->Fill(etac,areaj);
1563 areabg = areabg - areaj;
1564 } // end jets loop
1565 hAreaBackg->Fill(etac,areabg);
1566 eta0 = eta1;
1567 eta1 = eta1 + etaw;
1568 } // end loop for all eta bins
1569
1570 //subtract background
1571 for(Int_t kjet=0; kjet<nJ; kjet++){
1572 etJet[kjet] = 0.0; // first clear etJet for this jet
1573 for(Int_t bin = 0; bin< ndiv; bin++){
1574 if(hAreaJet[kjet]->GetBinContent(bin)){
1575 Float_t areab = hAreaBackg->GetBinContent(bin);
1576 Float_t etb = hEtBackg->GetBinContent(bin);
1577 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1578 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR); //subtraction
1579 }
1580 }
1581 }
ee7de0dd 1582
8838ab7a 1583 // calc background total
1584 Double_t etOut = hEtBackg->Integral();
1585 Double_t areaOut = hAreaBackg->Integral();
1586 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1587 etbgTotalN = etOut*areaT/areaOut;
1588
1589 //delete
1590 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1591 delete hEtJet[ljet];
1592 delete hAreaJet[ljet];
1593 }
ee7de0dd 1594
8838ab7a 1595 delete hEtBackg;
1596 delete hAreaBackg;
1597}
ee7de0dd 1598
8838ab7a 1599////////////////////////////////////////////////////////////////////////
be6e5811 1600void AliUA1JetFinderV2::SubtractBackgRatio(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
1240edf5 1601 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* sFlagT,
c345674e 1602 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1603 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1604{
8838ab7a 1605 // Ratio background subtraction method taking into acount dEt/deta distribution
1606 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1607 //factor F calc before
1608 Float_t bgRatioCut = header->GetBackgCutRatio();
1609
1610 //general
1611 Float_t rc= header->GetRadius();
1612 Float_t etamax = header->GetLegoEtaMax();
1613 Float_t etamin = header->GetLegoEtaMin();
1614 Int_t ndiv = 100;
1615
1616 // jet energy and area arrays
1617 TH1F* hEtJet[30];
1618 TH1F* hAreaJet[30];
1619 for(Int_t mjet=0; mjet<nJ; mjet++){
1620 char hEtname[256]; char hAreaname[256];
e3d2ffb4 1621 snprintf(hEtname, 256, "hEtJet%d", mjet); snprintf(hAreaname, 256, "hAreaJet%d", mjet);
8838ab7a 1622 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); // change range
1623 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); // change range
ee7de0dd 1624 }
8838ab7a 1625 // background energy and area
1626 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); // change range
1627 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); // change range
1628
1629 //fill energies
1630 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1631 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1632 Float_t deta = etaT[jpart] - etaJet[ijet];
1633 Float_t dphi = phiT[jpart] - phiJet[ijet];
1634 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1635 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1636 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1637 if(dr <= rc){ // particles inside this cone
1638 multJet[ijet]++;
1639 injet[jpart] = ijet;
1640 if(cFlagT[jpart] == 1){ //pt cut
1641 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone and pt cut
1642 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1643 }
1644 break;
1645 }
1646 }// end jets loop
1647 if(injet[jpart] == -1) hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1648 } //end particle loop
1649
8838ab7a 1650 //calc areas
1651 Float_t eta0 = etamin;
1652 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1653 Float_t eta1 = eta0 + etaw;
1654 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1655 Float_t etac = eta0 + etaw/2.0;
1656 Float_t areabg = etaw*2.0*TMath::Pi();
1657 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1658 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1659 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1660 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1661 Float_t areaj = 0.0;
1662 if(deta0 > rc && deta1 < rc){
1663 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1664 areaj = acc1;
1665 }
1666 if(deta0 < rc && deta1 > rc){
1667 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1668 areaj = acc0;
1669 }
1670 if(deta0 < rc && deta1 < rc){
1671 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1672 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1673 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1674 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1675 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1676 }
1677 hAreaJet[ijet]->Fill(etac,areaj);
1678 areabg = areabg - areaj;
1679 } // end jets loop
1680 hAreaBackg->Fill(etac,areabg);
1681 eta0 = eta1;
1682 eta1 = eta1 + etaw;
1683 } // end loop for all eta bins
1684
1685 //subtract background
1686 for(Int_t kjet=0; kjet<nJ; kjet++){
1687 etJet[kjet] = 0.0; // first clear etJet for this jet
1688 for(Int_t bin = 0; bin< ndiv; bin++){
1689 if(hAreaJet[kjet]->GetBinContent(bin)){
1690 Float_t areab = hAreaBackg->GetBinContent(bin);
1691 Float_t etb = hEtBackg->GetBinContent(bin);
1692 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1693 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR*bgRatioCut); //subtraction
1694 }
1695 }
1696 }
1697
1698 // calc background total
1699 Double_t etOut = hEtBackg->Integral();
1700 Double_t areaOut = hAreaBackg->Integral();
1701 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1702 etbgTotalN = etOut*areaT/areaOut;
1703
1704 //delete
1705 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1706 delete hEtJet[ljet];
1707 delete hAreaJet[ljet];
1708 }
1709
1710 delete hEtBackg;
1711 delete hAreaBackg;
ee7de0dd 1712}
1713
1714////////////////////////////////////////////////////////////////////////
ee7de0dd 1715void AliUA1JetFinderV2::Reset()
1716{
1717 fLego->Reset();
ee7de0dd 1718 AliJetFinder::Reset();
1719}
1720
1721////////////////////////////////////////////////////////////////////////
446dbc09 1722void AliUA1JetFinderV2::WriteJHeaderToFile() const
ee7de0dd 1723{
1724 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1725 header->Write();
1726}
1727
1728////////////////////////////////////////////////////////////////////////
8838ab7a 1729void AliUA1JetFinderV2::InitTask(TChain* tree)
ee7de0dd 1730{
8838ab7a 1731
ee7de0dd 1732 // initializes some variables
1733 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 1734 // book lego
1735 fLego = new TH2F("legoH","eta-phi",
1736 header->GetLegoNbinEta(), header->GetLegoEtaMin(),
1737 header->GetLegoEtaMax(), header->GetLegoNbinPhi(),
1738 header->GetLegoPhiMin(), header->GetLegoPhiMax());
1739
cc6a2227 1740 fDebug = fHeader->GetDebug();
ee7de0dd 1741 fOpt = fReader->GetReaderHeader()->GetDetector();
8838ab7a 1742
1743 // Tasks initialization
ee7de0dd 1744 if(fOpt>0)
8838ab7a 1745 fReader->CreateTasks(tree);
ee7de0dd 1746
1747}