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