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Coding violations corrected.
[u/mrichter/AliRoot.git] / JETAN / AliUA1JetFinderV2.cxx
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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();
89
90 if (nIn == 0) return;
91
92 // local arrays for input
93 Float_t* ptT = new Float_t[nIn];
94 Float_t* etaT = new Float_t[nIn];
95 Float_t* phiT = new Float_t[nIn];
446dbc09 96 Int_t* cFlagT = new Int_t[nIn]; // Temporarily added
97 Int_t* sFlagT = new Int_t[nIn]; // Temporarily added
8838ab7a 98 Int_t* injet = new Int_t[nIn];
99
100 //total energy in array
101 Float_t etbgTotal = 0.0;
102 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
103
104 // load input vectors and calculate total energy in array
105 for (Int_t i = 0; i < nIn; i++){
106 TLorentzVector *lv = (TLorentzVector*) lvArray->At(i);
107 ptT[i] = lv->Pt();
108 etaT[i] = lv->Eta();
109 phiT[i] = ((lv->Phi() < 0) ? (lv->Phi()) + 2 * TMath::Pi() : lv->Phi());
be6e5811 110 cFlagT[i] = fReader->GetCutFlag(i);
111 sFlagT[i] = fReader->GetSignalFlag(i);
8838ab7a 112
113 if (fReader->GetCutFlag(i) != 1) continue;
114 fLego->Fill(etaT[i], phiT[i], ptT[i]);
115 hPtTotal->Fill(ptT[i]);
116 etbgTotal+= ptT[i];
117 }
118
8838ab7a 119
120 // calculate total energy and fluctuation in map
121 Double_t meanpt = hPtTotal->GetMean();
122 Double_t ptRMS = hPtTotal->GetRMS();
123 Double_t npart = hPtTotal->GetEntries();
124 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
125
126 // arrays to hold jets
be6e5811 127 Float_t* etaJet = new Float_t[30]; // eta jet
128 Float_t* phiJet = new Float_t[30]; // phi jet
129 Float_t* etJet = new Float_t[30]; // et jet
130 Float_t* etsigJet = new Float_t[30]; // signal et in jet
8838ab7a 131 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
132 Int_t* ncellsJet = new Int_t[30];
133 Int_t* multJet = new Int_t[30];
134 //--- Added for jet reordering at the end of the jet finding procedure
135 Float_t* etaJetOk = new Float_t[30];
136 Float_t* phiJetOk = new Float_t[30];
137 Float_t* etJetOk = new Float_t[30];
be6e5811 138 Float_t* etsigJetOk = new Float_t[30]; // signal et in jet
8838ab7a 139 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
140 Int_t* ncellsJetOk = new Int_t[30];
141 Int_t* multJetOk = new Int_t[30];
142 //--------------------------
143 Int_t nJets; // to hold number of jets found by algorithm
144 Int_t nj; // number of jets accepted
145 Float_t prec = header->GetPrecBg();
146 Float_t bgprec = 1;
147 while(bgprec > prec){
148 //reset jet arrays in memory
149 memset(etaJet,0,sizeof(Float_t)*30);
150 memset(phiJet,0,sizeof(Float_t)*30);
151 memset(etJet,0,sizeof(Float_t)*30);
152 memset(etallJet,0,sizeof(Float_t)*30);
153 memset(etsigJet,0,sizeof(Float_t)*30);
154 memset(ncellsJet,0,sizeof(Int_t)*30);
155 memset(multJet,0,sizeof(Int_t)*30);
156 //--- Added for jet reordering at the end of the jet finding procedure
157 memset(etaJetOk,0,sizeof(Float_t)*30);
158 memset(phiJetOk,0,sizeof(Float_t)*30);
159 memset(etJetOk,0,sizeof(Float_t)*30);
160 memset(etallJetOk,0,sizeof(Float_t)*30);
161 memset(etsigJetOk,0,sizeof(Float_t)*30);
162 memset(ncellsJetOk,0,sizeof(Int_t)*30);
163 memset(multJetOk,0,sizeof(Int_t)*30);
164 //--------------------------
165 nJets = 0;
166 nj = 0;
167
168 // reset particles-jet array in memory
169 memset(injet,-1,sizeof(Int_t)*nIn);
170 //run cone algorithm finder
171 RunAlgoritmC(etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,etallJet,ncellsJet);
172
173 //run background subtraction
174 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
175 nj = header->GetNAcceptJets();
176 else
177 nj = nJets;
178 //subtract background
179 Float_t etbgTotalN = 0.0; //new background
180 if(header->GetBackgMode() == 1) // standard
8838ab7a 181 SubtractBackgC(nIn,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
182 if(header->GetBackgMode() == 2) //cone
183 SubtractBackgCone(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
184 if(header->GetBackgMode() == 3) //ratio
185 SubtractBackgRatio(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
186 if(header->GetBackgMode() == 4) //statistic
187 SubtractBackgStat(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
188 //calc precision
446dbc09 189 if(TMath::Abs(etbgTotalN) > 0.001)
8838ab7a 190 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
191 else
192 bgprec = 0;
193 etbgTotal = etbgTotalN; // update with new background estimation
194 } //end while
195
196 // add jets to list
197 Int_t* idxjets = new Int_t[nj];
198 Int_t nselectj = 0;
199 printf("Found %d jets \n", nj);
ee7de0dd 200
8838ab7a 201 // Reorder jets by et in cone
202 Int_t * idx = new Int_t[nJets];
203 TMath::Sort(nJets, etJet, idx);
204 for(Int_t p = 0; p < nJets; p++){
205 etaJetOk[p] = etaJet[idx[p]];
206 phiJetOk[p] = phiJet[idx[p]];
207 etJetOk[p] = etJet[idx[p]];
208 etallJetOk[p] = etJet[idx[p]];
be6e5811 209 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 210 ncellsJetOk[p] = ncellsJet[idx[p]];
211 multJetOk[p] = multJet[idx[p]];
212 }
213
214 for(Int_t kj=0; kj<nj; kj++)
215 {
216 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
217 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
218 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
219 Float_t px, py,pz,en; // convert to 4-vector
220 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
221 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
222 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
223 en = TMath::Sqrt(px * px + py * py + pz * pz);
8838ab7a 224
225 AliAODJet jet(px, py, pz, en);
226 jet.Print("");
227
228 AddJet(jet);
229
230 idxjets[nselectj] = kj;
231 nselectj++;
232 }
ee7de0dd 233
8838ab7a 234 //add signal percentage and total signal in AliJets for analysis tool
235 Float_t* percentage = new Float_t[nselectj];
236 Int_t* ncells = new Int_t[nselectj];
237 Int_t* mult = new Int_t[nselectj];
238 for(Int_t i = 0; i< nselectj; i++)
239 {
240 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
241 ncells[i] = ncellsJetOk[idxjets[i]];
242 mult[i] = multJetOk[idxjets[i]];
243 }
244
245 //add particle-injet relationship ///
246 for(Int_t bj = 0; bj < nIn; bj++)
247 {
248 if(injet[bj] == -1) continue; //background particle
249 Int_t bflag = 0;
250 for(Int_t ci = 0; ci< nselectj; ci++){
251 if(injet[bj] == idxjets[ci]){
252 injet[bj]= ci;
253 bflag++;
254 break;
255 }
256 }
257 if(bflag == 0) injet[bj] = -1; // set as background particle
258 }
259
8838ab7a 260
261 //delete
262 delete[] ptT;
263 delete[] etaT;
264 delete[] phiT;
265 delete[] cFlagT;
266 delete[] sFlagT;
267 delete[] injet;
268 delete[] hPtTotal;
269 delete[] etaJet;
270 delete[] phiJet;
271 delete[] etJet;
272 delete[] etsigJet;
273 delete[] etallJet;
274 delete[] ncellsJet;
275 delete[] multJet;
276 delete[] idxjets;
277 delete[] percentage;
278 delete[] ncells;
279 delete[] mult;
280 //--- Added for jet reordering
281 delete etaJetOk;
282 delete phiJetOk;
283 delete etJetOk;
284 delete etsigJetOk;
285 delete etallJetOk;
286 delete ncellsJetOk;
287 delete multJetOk;
288 //--------------------------
289
290}
ee7de0dd 291
8838ab7a 292////////////////////////////////////////////////////////////////////////
293void AliUA1JetFinderV2::FindJets()
ee7de0dd 294{
8838ab7a 295 //
296 // Used to find jets using charged particle momentum information
297 // & neutral energy from calo cells
298 //
299 // 1) Fill cell map array
300 // 2) calculate total energy and fluctuation level
301 // 3) Run algorithm
302 // 3.1) look centroides in cell map
303 // 3.2) calculate total energy in cones
304 // 3.3) flag as a possible jet
305 // 3.4) reorder cones by energy
306 // 4) subtract backg in accepted jets
307 // 5) fill AliJet list
ee7de0dd 308
309 // transform input to pt,eta,phi plus lego
310
8838ab7a 311 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
312 TClonesArray* fUnit = fReader->GetUnitArray();
313 Int_t nCand = fReader->GetNumCandidate();
314 Int_t nCandCut = fReader->GetNumCandidateCut();
315 Int_t nIn = fUnit->GetEntries();
be6e5811 316 Float_t ptMin = fReader->GetReaderHeader()->GetPtCut();
ee7de0dd 317
be6e5811 318 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 319 if (nIn == 0) return;
320
8838ab7a 321 Int_t nCandidateCut = 0;
322 Int_t nCandidate = 0;
323
324 nCandidate = nCand;
325 nCandidateCut = nCandCut;
326
ee7de0dd 327 // local arrays for input No Cuts
328 // Both pt < ptMin and pt > ptMin
be6e5811 329 Float_t* ptT = new Float_t[nCandidate];
330 Float_t* en2T = new Float_t[nCandidate];
331 Float_t* pt2T = new Float_t[nCandidate];
332 Int_t* detT = new Int_t[nCandidate];
333 Float_t* etaT = new Float_t[nCandidate];
334 Float_t* phiT = new Float_t[nCandidate];
446dbc09 335 Int_t* cFlagT = new Int_t[nCandidate];
336 Int_t* cFlag2T = new Int_t[nCandidate];
337 Int_t* sFlagT = new Int_t[nCandidate];
be6e5811 338 Float_t* cClusterT = new Float_t[nCandidate];
339 Int_t* vectT = new Int_t[nCandidate];
340 Int_t loop1 = 0;
341 Int_t* injet = new Int_t[nCandidate];
342 Int_t* sflag = new Int_t[nCandidate];
343 TRefArray* trackRef = new TRefArray();
ee7de0dd 344
345 //total energy in array
346 Float_t etbgTotal = 0.0;
be6e5811 347 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
ee7de0dd 348
349 // Input cell info
be6e5811 350 Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
351 Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
352 Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
353 Int_t *flagCell = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
354 Float_t *etCell2 = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
355 Float_t *etaCell2 = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
356 Float_t *phiCell2 = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
8838ab7a 357 Int_t *flagCell2 = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray
358
ee7de0dd 359 // Information extracted from fUnitArray
8838ab7a 360 // Load input vectors and calculate total energy in array
ee7de0dd 361 for(Int_t i=0; i<nIn; i++)
362 {
8838ab7a 363 // Recover particle information from UnitArray
364
ee7de0dd 365 AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i);
be6e5811 366 TRefArray* ref = uArray->GetUnitTrackRef();
367 Int_t nRef = ref->GetEntries();
368
ee7de0dd 369 if(uArray->GetUnitEnergy()>0.){
be6e5811 370
371 for(Int_t jpart=0; jpart<nRef;jpart++)
372 trackRef->Add((AliVTrack*)ref->At(jpart));
ee7de0dd 373 ptT[loop1] = uArray->GetUnitEnergy();
8838ab7a 374 detT[loop1] = uArray->GetUnitDetectorFlag();
ee7de0dd 375 etaT[loop1] = uArray->GetUnitEta();
376 phiT[loop1] = uArray->GetUnitPhi();
8838ab7a 377 cFlagT[loop1]= uArray->GetUnitCutFlag(); // pt cut tpc
378 cFlag2T[loop1]= uArray->GetUnitCutFlag2(); // pt cut emcal
379 sFlagT[loop1]= uArray->GetUnitSignalFlag();
be6e5811 380 vectT[loop1] = nRef;
8838ab7a 381 if(cFlagT[loop1] == 1 || cFlag2T[loop1] == 1) {
382 pt2T[loop1] = 0.;
383 en2T[loop1] = 0.;
384 if(detT[loop1]==1){
385 en2T[loop1] = ptT[loop1] - header->GetMinCellEt();
386 if(en2T[loop1] < 0) en2T[loop1]=0;
387 hPtTotal->Fill(en2T[loop1]);
388 etbgTotal += en2T[loop1];
389 }
390 if(detT[loop1]==0){ // TPC+ITS
391 Float_t pt = 0.;
be6e5811 392 for(Int_t j=0; j<nRef;j++){
8838ab7a 393 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 394 x = ((AliVTrack*)ref->At(j))->Px();
395 y = ((AliVTrack*)ref->At(j))->Py();
396 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 397 pt = TMath::Sqrt(x*x+y*y);
be6e5811 398 if(pt>ptMin) {
8838ab7a 399 pt2T[loop1] += pt;
400 en2T[loop1] += pt;
401 hPtTotal->Fill(pt);
402 etbgTotal+= pt;
403 }
404 }
405 }
406 if(detT[loop1]==2) { // EMCal
407 Float_t ptCTot = 0.;
408 Float_t pt = 0.;
409 Float_t enC = 0.;
be6e5811 410 for(Int_t j=0; j<nRef;j++){
8838ab7a 411 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 412 x = ((AliVTrack*)ref->At(j))->Px();
413 y = ((AliVTrack*)ref->At(j))->Py();
414 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 415 pt = TMath::Sqrt(x*x+y*y);
be6e5811 416 if(pt>ptMin) {
8838ab7a 417 pt2T[loop1]+=pt;
418 en2T[loop1]+=pt;
419 hPtTotal->Fill(pt);
420 etbgTotal+= pt;
421 }
422 ptCTot += pt;
423 }
424 enC = ptT[loop1] - ptCTot - header->GetMinCellEt();
425 if(enC < 0.) enC=0.;
426 en2T[loop1] += enC;
427 hPtTotal->Fill(enC);
428 etbgTotal+= enC;
429 }
ee7de0dd 430 }
431 loop1++;
432 }
ee7de0dd 433
8838ab7a 434 if(uArray->GetUnitCutFlag()==1) {
435 if(uArray->GetUnitDetectorFlag()==1){ // EMCal case
436 etCell[i] = uArray->GetUnitEnergy() - header->GetMinCellEt();
437 if ((uArray->GetUnitEnergy() - header->GetMinCellEt()) < 0.0) etCell[i]=0.;
438 etaCell[i] = uArray->GetUnitEta();
439 phiCell[i] = uArray->GetUnitPhi();
440 flagCell[i] = 0; // default
441 etCell2[i] = etCell[i];
442 etaCell2[i] = uArray->GetUnitEta();
443 phiCell2[i] = uArray->GetUnitPhi();
444 flagCell2[i] = 0; // default
445 }
446 if(uArray->GetUnitDetectorFlag()==0){ // TPC case
447 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
be6e5811 448 for(Int_t j=0; j<nRef;j++)
8838ab7a 449 {
450 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 451 x = ((AliVTrack*)ref->At(j))->Px();
452 y = ((AliVTrack*)ref->At(j))->Py();
453 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 454 pt = TMath::Sqrt(x*x+y*y);
be6e5811 455 if(pt>ptMin) {
8838ab7a 456 et1 += pt;
457 et2 += pt;
458 }
459 }
460 etCell[i] = et1;
461 etCell2[i] = et2;
462 if(et1 < 0.) etCell[i] = etCell2[i] = 0.;
463 etaCell[i] = uArray->GetUnitEta();
464 phiCell[i] = uArray->GetUnitPhi();
465 flagCell[i] = 0; // default
466 etaCell2[i] = uArray->GetUnitEta();
467 phiCell2[i] = uArray->GetUnitPhi();
468 flagCell2[i] = 0; // default
469 }
470 if(uArray->GetUnitDetectorFlag()==2){ // TPC + EMCal case
471 Float_t ptCTot = 0.;
472 Float_t pt = 0.; Float_t et1 = 0.; Float_t et2 = 0.;
473 Float_t enC = 0.;
be6e5811 474 for(Int_t j=0; j<nRef;j++)
8838ab7a 475 {
476 Float_t x=0.; Float_t y=0.; Float_t z=0.;
be6e5811 477 x = ((AliVTrack*)ref->At(j))->Px();
478 y = ((AliVTrack*)ref->At(j))->Py();
479 z = ((AliVTrack*)ref->At(j))->Pz();
8838ab7a 480 pt = TMath::Sqrt(x*x+y*y);
be6e5811 481 if(pt>ptMin) {
8838ab7a 482 et1 += pt;
483 et2 += pt;
484 }
485 ptCTot += pt;
486 }
487 enC = uArray->GetUnitEnergy() - ptCTot;
488 etCell[i] = et1 + enC - header->GetMinCellEt();
489 etCell2[i] = et2 + enC - header->GetMinCellEt();
490 if((enC + et1 - header->GetMinCellEt()) < 0.) etCell[i] = etCell2[i] = 0.;
491 etaCell[i] = uArray->GetUnitEta();
492 phiCell[i] = uArray->GetUnitPhi();
493 flagCell[i] = 0; // default
494 etaCell2[i] = uArray->GetUnitEta();
495 phiCell2[i] = uArray->GetUnitPhi();
496 flagCell2[i] = 0; // default
497 }
498 }
499 else {
500 etCell[i] = 0.;
501 etaCell[i] = uArray->GetUnitEta();
502 phiCell[i] = uArray->GetUnitPhi();
503 flagCell[i] = 0;
504 etCell2[i] = 0.;
505 etaCell2[i] = uArray->GetUnitEta();
506 phiCell2[i] = uArray->GetUnitPhi();
507 flagCell2[i] = 0;
508 }
509 } // end loop on nCandidate
510
ee7de0dd 511
512 // calculate total energy and fluctuation in map
513 Double_t meanpt = hPtTotal->GetMean();
514 Double_t ptRMS = hPtTotal->GetRMS();
515 Double_t npart = hPtTotal->GetEntries();
516 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
517
518 // arrays to hold jets
8838ab7a 519 Float_t* etaJet = new Float_t[30];
520 Float_t* phiJet = new Float_t[30];
521 Float_t* etJet = new Float_t[30];
ee7de0dd 522 Float_t* etsigJet = new Float_t[30]; //signal et in jet
8838ab7a 523 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
524 Int_t* ncellsJet = new Int_t[30];
525 Int_t* multJet = new Int_t[30];
526 //--- Added by me for jet reordering at the end of the jet finding procedure
527 Float_t* etaJetOk = new Float_t[30];
528 Float_t* phiJetOk = new Float_t[30];
529 Float_t* etJetOk = new Float_t[30];
530 Float_t* etsigJetOk = new Float_t[30]; //signal et in jet
531 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
532 Int_t* ncellsJetOk = new Int_t[30];
533 Int_t* multJetOk = new Int_t[30];
534 //--------------------------
535 Int_t nJets; // to hold number of jets found by algorithm
536 Int_t nj; // number of jets accepted
537 Float_t prec = header->GetPrecBg();
538 Float_t bgprec = 1;
539
ee7de0dd 540 while(bgprec > prec){
ee7de0dd 541
8838ab7a 542 //reset jet arrays in memory
543 memset(etaJet,0,sizeof(Float_t)*30);
544 memset(phiJet,0,sizeof(Float_t)*30);
545 memset(etJet,0,sizeof(Float_t)*30);
546 memset(etallJet,0,sizeof(Float_t)*30);
547 memset(etsigJet,0,sizeof(Float_t)*30);
548 memset(ncellsJet,0,sizeof(Int_t)*30);
549 memset(multJet,0,sizeof(Int_t)*30);
550 //--- Added by me for jet reordering at the end of the jet finding procedure
551 memset(etaJetOk,0,sizeof(Float_t)*30);
552 memset(phiJetOk,0,sizeof(Float_t)*30);
553 memset(etJetOk,0,sizeof(Float_t)*30);
554 memset(etallJetOk,0,sizeof(Float_t)*30);
555 memset(etsigJetOk,0,sizeof(Float_t)*30);
556 memset(ncellsJetOk,0,sizeof(Int_t)*30);
557 memset(multJetOk,0,sizeof(Int_t)*30);
558
559 nJets = 0;
560 nj = 0;
561
562 // reset particles-jet array in memory
563 memset(injet,-1,sizeof(Int_t)*nCandidate);
564 //run cone algorithm finder
565 RunAlgoritm(nIn,etCell,etaCell,phiCell,flagCell,etCell2,etaCell2,phiCell2,
566 flagCell2,etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,
567 etallJet,ncellsJet);
568
569 //run background subtraction
570 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
571 nj = header->GetNAcceptJets();
572 else
573 nj = nJets;
574
575 //subtract background
576 Float_t etbgTotalN = 0.0; //new background
577 if(header->GetBackgMode() == 1) // standard
578 SubtractBackg(nCandidate,nj,etbgTotalN,en2T,vectT,etaT,phiT,cFlagT,cFlag2T,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
579 // To be modified ------------------------
580 if(header->GetBackgMode() == 2) //cone
581 SubtractBackgCone(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
582 if(header->GetBackgMode() == 3) //ratio
583 SubtractBackgRatio(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
584 if(header->GetBackgMode() == 4) //statistic
585 SubtractBackgStat(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
586 //----------------------------------------
587 //calc precision
588 if(etbgTotalN != 0.0)
589 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
590 else
591 bgprec = 0;
592 etbgTotal = etbgTotalN; // update with new background estimation
593 } //end while
594
ee7de0dd 595 // add jets to list
596 Int_t* idxjets = new Int_t[nj];
597 Int_t nselectj = 0;
598 printf("Found %d jets \n", nj);
599
8838ab7a 600 // Reorder jets by et in cone
601 // Sort jets by energy
602 Int_t * idx = new Int_t[nJets];
603 TMath::Sort(nJets, etJet, idx);
604 for(Int_t p = 0; p < nJets; p++)
605 {
606 etaJetOk[p] = etaJet[idx[p]];
607 phiJetOk[p] = phiJet[idx[p]];
608 etJetOk[p] = etJet[idx[p]];
609 etallJetOk[p] = etJet[idx[p]];
be6e5811 610 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 611 ncellsJetOk[p] = ncellsJet[idx[p]];
612 multJetOk[p] = multJet[idx[p]];
613 }
614
e36a3f22 615 TRefArray *refs = 0;
616 Bool_t fromAod = !strcmp(fReader->ClassName(),"AliJetAODReader");
617 if (fromAod) refs = fReader->GetReferences();
618 Int_t nTracks = 0;
619 if (fromAod) nTracks = ((TRefArray*)refs)->GetEntries();
620 Int_t* trackinjet = new Int_t[nTracks];
621 for(Int_t it=0; it<nTracks; it++) trackinjet[it]=-1;
622
8838ab7a 623 for(Int_t kj=0; kj<nj; kj++)
624 {
625 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
626 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
627 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
ee7de0dd 628 Float_t px, py,pz,en; // convert to 4-vector
8838ab7a 629 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
630 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
631 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
ee7de0dd 632 en = TMath::Sqrt(px * px + py * py + pz * pz);
42b0ac89 633
ee7de0dd 634 AliAODJet jet(px, py, pz, en);
635 jet.Print("");
636
e36a3f22 637 if (fromAod){
638 for(Int_t jpart = 0; jpart < nTracks; jpart++) { // loop for all particles in array
639 Float_t deta = ((AliAODTrack*)refs->At(jpart))->Eta() - etaJetOk[kj];
640 Float_t dphi = ((AliAODTrack*)refs->At(jpart))->Phi() - phiJetOk[kj];
641 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
642 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
e59b9a1c 643
e36a3f22 644 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
e59b9a1c 645 if(dr <= header->GetRadius() && fReader->GetCutFlag(jpart) == 1) {
646 // particles inside this cone
647 if(trackinjet[jpart]==-1) {
648 trackinjet[jpart] = kj;
649 } else if(fDebug>10) {
650 printf("The track already belongs to jet %d \n",trackinjet[jpart]);
651 }
652 }
e36a3f22 653 if(trackinjet[jpart]==kj)
e59b9a1c 654 jet.AddTrack(refs->At(jpart)); // check if the particle belongs to the jet and add the ref
e36a3f22 655 }
656 }
657
ee7de0dd 658 AddJet(jet);
659
660 idxjets[nselectj] = kj;
661 nselectj++;
8838ab7a 662 }
663
ee7de0dd 664 //add signal percentage and total signal in AliJets for analysis tool
665 Float_t* percentage = new Float_t[nselectj];
666 Int_t* ncells = new Int_t[nselectj];
667 Int_t* mult = new Int_t[nselectj];
8838ab7a 668 for(Int_t i = 0; i< nselectj; i++)
669 {
670 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
671 ncells[i] = ncellsJetOk[idxjets[i]];
672 mult[i] = multJetOk[idxjets[i]];
673 }
674
675 //add particle-injet relationship ///
676 for(Int_t bj = 0; bj < nCandidate; bj++)
677 {
678 if(injet[bj] == -1) continue; //background particle
679 Int_t bflag = 0;
680 for(Int_t ci = 0; ci< nselectj; ci++){
681 if(injet[bj] == idxjets[ci]){
682 injet[bj]= ci;
683 bflag++;
684 break;
685 }
686 }
687 if(bflag == 0) injet[bj] = -1; // set as background particle
ee7de0dd 688 }
8838ab7a 689
ee7de0dd 690
691 //delete
ee7de0dd 692 delete ptT;
8838ab7a 693 delete en2T;
694 delete pt2T;
ee7de0dd 695 delete etaT;
696 delete phiT;
be6e5811 697 trackRef->Delete();
698 delete trackRef;
8838ab7a 699 delete detT;
ee7de0dd 700 delete cFlagT;
8838ab7a 701 delete cFlag2T;
702 delete sFlagT;
ee7de0dd 703 delete cClusterT;
8838ab7a 704 delete vectT;
ee7de0dd 705 delete injet;
706 delete sflag;
707 delete hPtTotal;
708 delete etCell;
709 delete etaCell;
710 delete phiCell;
711 delete flagCell;
8838ab7a 712 delete etCell2;
713 delete etaCell2;
714 delete phiCell2;
715 delete flagCell2;
ee7de0dd 716 delete etaJet;
717 delete phiJet;
718 delete etJet;
719 delete etsigJet;
720 delete etallJet;
721 delete ncellsJet;
722 delete multJet;
8838ab7a 723 //--- Added for jet reordering
724 delete etaJetOk;
725 delete phiJetOk;
726 delete etJetOk;
727 delete etsigJetOk;
728 delete etallJetOk;
729 delete ncellsJetOk;
730 delete multJetOk;
731 //--------------------------
e36a3f22 732 delete trackinjet;
ee7de0dd 733 delete idxjets;
734 delete percentage;
735 delete ncells;
736 delete mult;
737
ee7de0dd 738}
739
740////////////////////////////////////////////////////////////////////////
c345674e 741void AliUA1JetFinderV2::RunAlgoritm(Int_t nIn, Float_t* etCell, Float_t* const etaCell, Float_t* phiCell,
742 Int_t* const flagCell, const Float_t* etCell2, const Float_t* etaCell2, const Float_t* phiCell2,
743 const Int_t* flagCell2, Float_t etbgTotal, Double_t dEtTotal,
744 Int_t& nJets, Float_t* const etJet, Float_t* const etaJet, Float_t* const phiJet,
745 Float_t* const etallJet, Int_t* const ncellsJet)
ee7de0dd 746{
be6e5811 747 //
748 // Main method for jet finding
749 // UA1 base cone finder
750 //
751
8838ab7a 752 Int_t nCell = nIn;
be6e5811 753 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 754
8838ab7a 755 // Dump lego
756 // Check enough space! *to be done*
ee7de0dd 757 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 758 for(Int_t i=0; i<nCell; i++){
759 etCell[i] = etCell2[i];
760 etaCell[i] = etaCell2[i];
761 phiCell[i] = phiCell2[i];
762 flagCell[i] = flagCell2[i];
763 }
ee7de0dd 764
765 // Parameters from header
766 Float_t minmove = header->GetMinMove();
767 Float_t maxmove = header->GetMaxMove();
768 Float_t rc = header->GetRadius();
769 Float_t etseed = header->GetEtSeed();
770
8838ab7a 771 // Tmp array of jets form algoritm
ee7de0dd 772 Float_t etaAlgoJet[30];
773 Float_t phiAlgoJet[30];
774 Float_t etAlgoJet[30];
775 Int_t ncellsAlgoJet[30];
776
8838ab7a 777 // Run algorithm//
ee7de0dd 778
8838ab7a 779 // Sort cells by et
ee7de0dd 780 Int_t * index = new Int_t[nCell];
781 TMath::Sort(nCell, etCell, index);
782
8838ab7a 783 // Variable used in centroide loop
9dda5307 784 Float_t eta = 0.0;
785 Float_t phi = 0.0;
786 Float_t eta0 = 0.0;
787 Float_t phi0 = 0.0;
788 Float_t etab = 0.0;
789 Float_t phib = 0.0;
790 Float_t etas = 0.0;
791 Float_t phis = 0.0;
792 Float_t ets = 0.0;
793 Float_t deta = 0.0;
794 Float_t dphi = 0.0;
795 Float_t dr = 0.0;
796 Float_t etsb = 0.0;
ee7de0dd 797 Float_t etasb = 0.0;
798 Float_t phisb = 0.0;
9dda5307 799 Float_t dphib = 0.0;
ee7de0dd 800
8838ab7a 801 for(Int_t icell = 0; icell < nCell; icell++)
802 {
9dda5307 803 Int_t jcell = index[icell];
804 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
805 if(flagCell[jcell] != 0) continue; // if cell was used before
8838ab7a 806
9dda5307 807 eta = etaCell[jcell];
808 phi = phiCell[jcell];
809 eta0 = eta;
810 phi0 = phi;
811 etab = eta;
812 phib = phi;
813 ets = etCell[jcell];
814 etas = 0.0;
815 phis = 0.0;
816 etsb = ets;
817 etasb = 0.0;
818 phisb = 0.0;
8838ab7a 819 for(Int_t kcell =0; kcell < nCell; kcell++)
820 {
9dda5307 821 Int_t lcell = index[kcell];
822 if(lcell == jcell) continue; // cell itself
823 if(flagCell[lcell] != 0) continue; // cell used before
8838ab7a 824 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
9dda5307 825 //calculate dr
826 deta = etaCell[lcell] - eta;
8838ab7a 827 dphi = TMath::Abs(phiCell[lcell] - phi);
9dda5307 828 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
829 dr = TMath::Sqrt(deta * deta + dphi * dphi);
830 if(dr <= rc){
8838ab7a 831 // calculate offset from initiate cell
832 deta = etaCell[lcell] - eta0;
833 dphi = phiCell[lcell] - phi0;
834 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
835 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
836 etas = etas + etCell[lcell]*deta;
837 phis = phis + etCell[lcell]*dphi;
838 ets = ets + etCell[lcell];
839 //new weighted eta and phi including this cell
840 eta = eta0 + etas/ets;
841 phi = phi0 + phis/ets;
842 // if cone does not move much, just go to next step
843 dphib = TMath::Abs(phi - phib);
844 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
845 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
846 if(dr <= minmove) break;
847 // cone should not move more than max_mov
848 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
849 if(dr > maxmove){
850 eta = etab;
851 phi = phib;
852 ets = etsb;
853 etas = etasb;
854 phis = phisb;
855 } else { // store this loop information
856 etab = eta;
857 phib = phi;
858 etsb = ets;
859 etasb = etas;
860 phisb = phis;
861 }
862 } // inside cone
ee7de0dd 863 }//end of cells loop looking centroide
864
865 //avoid cones overloap (to be implemented in the future)
866
867 //flag cells in Rc, estimate total energy in cone
8838ab7a 868 Float_t etCone = 0.0;
869 Int_t nCellIn = 0;
870 Int_t nCellOut = 0;
871 rc = header->GetRadius();
872
873 for(Int_t ncell =0; ncell < nCell; ncell++)
874 {
875 if(flagCell[ncell] != 0) continue; // cell used before
876 //calculate dr
877 deta = etaCell[ncell] - eta;
878 // if(deta <= rc){ // Added to improve velocity -> to be tested
879 dphi = phiCell[ncell] - phi;
880 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
881 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
882 // if(dphi <= rc){ // Added to improve velocity -> to be tested
883 dr = TMath::Sqrt(deta * deta + dphi * dphi);
884 if(dr <= rc){ // cell in cone
885 flagCell[ncell] = -1;
886 etCone+=etCell[ncell];
887 nCellIn++;
888 }
889 else nCellOut++;
890 // } // end deta <= rc
891 // } // end dphi <= rc
ee7de0dd 892 }
893
8838ab7a 894 // select jets with et > background
895 // estimate max fluctuation of background in cone
896 Double_t ncellin = (Double_t)nCellIn;
897 Double_t ntcell = (Double_t)nCell;
898 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/(ntcell));
899 // min cone et
900 Double_t etcmin = etCone ; // could be used etCone - etmin !!
901 //decisions !! etbmax < etcmin
902
903 for(Int_t mcell =0; mcell < nCell; mcell++)
904 {
905 if(flagCell[mcell] == -1){
906 if(etbmax < etcmin)
907 flagCell[mcell] = 1; //flag cell as used
908 else
909 flagCell[mcell] = 0; // leave it free
910 }
ee7de0dd 911 }
8838ab7a 912 //store tmp jet info !!!
913 if(etbmax < etcmin)
914 {
915 etaAlgoJet[nJets] = eta;
916 phiAlgoJet[nJets] = phi;
917 etAlgoJet[nJets] = etCone;
918 ncellsAlgoJet[nJets] = nCellIn;
919 nJets++;
920 }
921
922 } // end of cells loop
923
924 for(Int_t p = 0; p < nJets; p++)
925 {
926 etaJet[p] = etaAlgoJet[p];
927 phiJet[p] = phiAlgoJet[p];
928 etJet[p] = etAlgoJet[p];
929 etallJet[p] = etAlgoJet[p];
930 ncellsJet[p] = ncellsAlgoJet[p];
931 }
932
933 //delete
934 delete index;
935
936}
937
938////////////////////////////////////////////////////////////////////////
939void AliUA1JetFinderV2::RunAlgoritmC(Float_t etbgTotal, Double_t dEtTotal, Int_t& nJets,
c345674e 940 Float_t* const etJet,Float_t* const etaJet, Float_t* const phiJet,
941 Float_t* const etallJet, Int_t* const ncellsJet)
8838ab7a 942{
943 // Dump lego
944 // Check enough space! *to be done*
945 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
946 Float_t etCell[60000]; //! Cell Energy
947 Float_t etaCell[60000]; //! Cell eta
948 Float_t phiCell[60000]; //! Cell phi
949 Int_t flagCell[60000]; //! Cell flag
950
951 Int_t nCell = 0;
952 TAxis* xaxis = fLego->GetXaxis();
953 TAxis* yaxis = fLego->GetYaxis();
954 Float_t e = 0.0;
955 for (Int_t i = 1; i <= header->GetLegoNbinEta(); i++)
956 {
957 for (Int_t j = 1; j <= header->GetLegoNbinPhi(); j++)
958 {
959 e = fLego->GetBinContent(i,j);
960 if (e < 0.0) continue; // don't include this cells
961 Float_t eta = xaxis->GetBinCenter(i);
962 Float_t phi = yaxis->GetBinCenter(j);
963 etCell[nCell] = e;
964 etaCell[nCell] = eta;
965 phiCell[nCell] = phi;
966 flagCell[nCell] = 0; //default
967 nCell++;
968 }
969 }
970
971 // Parameters from header
972 Float_t minmove = header->GetMinMove();
973 Float_t maxmove = header->GetMaxMove();
974 Float_t rc = header->GetRadius();
975 Float_t etseed = header->GetEtSeed();
976
977 // Tmp array of jets form algoritm
978 Float_t etaAlgoJet[30];
979 Float_t phiAlgoJet[30];
980 Float_t etAlgoJet[30];
981 Int_t ncellsAlgoJet[30];
982
983 // Run algorithm//
984
985 // Sort cells by et
986 Int_t * index = new Int_t[nCell];
987 TMath::Sort(nCell, etCell, index);
988 // variable used in centroide loop
989 Float_t eta = 0.0;
990 Float_t phi = 0.0;
991 Float_t eta0 = 0.0;
992 Float_t phi0 = 0.0;
993 Float_t etab = 0.0;
994 Float_t phib = 0.0;
995 Float_t etas = 0.0;
996 Float_t phis = 0.0;
997 Float_t ets = 0.0;
998 Float_t deta = 0.0;
999 Float_t dphi = 0.0;
1000 Float_t dr = 0.0;
1001 Float_t etsb = 0.0;
1002 Float_t etasb = 0.0;
1003 Float_t phisb = 0.0;
1004 Float_t dphib = 0.0;
ee7de0dd 1005
8838ab7a 1006 for(Int_t icell = 0; icell < nCell; icell++)
1007 {
1008 Int_t jcell = index[icell];
1009 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
1010 if(flagCell[jcell] != 0) continue; // if cell was used before
1011
1012 eta = etaCell[jcell];
1013 phi = phiCell[jcell];
1014 eta0 = eta;
1015 phi0 = phi;
1016 etab = eta;
1017 phib = phi;
1018 ets = etCell[jcell];
1019 etas = 0.0;
1020 phis = 0.0;
1021 etsb = ets;
1022 etasb = 0.0;
1023 phisb = 0.0;
1024 for(Int_t kcell =0; kcell < nCell; kcell++)
1025 {
1026 Int_t lcell = index[kcell];
1027 if(lcell == jcell) continue; // cell itself
1028 if(flagCell[lcell] != 0) continue; // cell used before
1029 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
1030 //calculate dr
1031 deta = etaCell[lcell] - eta;
1032 dphi = TMath::Abs(phiCell[lcell] - phi);
1033 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1034 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1035 if(dr <= rc)
1036 {
1037 // calculate offset from initiate cell
1038 deta = etaCell[lcell] - eta0;
1039 dphi = phiCell[lcell] - phi0;
1040 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
1041 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
1042 etas = etas + etCell[lcell]*deta;
1043 phis = phis + etCell[lcell]*dphi;
1044 ets = ets + etCell[lcell];
1045 //new weighted eta and phi including this cell
1046 eta = eta0 + etas/ets;
1047 phi = phi0 + phis/ets;
1048 // if cone does not move much, just go to next step
1049 dphib = TMath::Abs(phi - phib);
1050 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
1051 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
1052 if(dr <= minmove) break;
1053 // cone should not move more than max_mov
1054 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
1055 if(dr > maxmove){
1056 eta = etab;
1057 phi = phib;
1058 ets = etsb;
1059 etas = etasb;
1060 phis = phisb;
1061 } else { // store this loop information
1062 etab=eta;
1063 phib=phi;
1064 etsb = ets;
1065 etasb = etas;
1066 phisb = phis;
1067 }
1068 } // inside cone
1069 }//end of cells loop looking centroide
1070
1071 // Avoid cones overloap (to be implemented in the future)
1072
1073 // Flag cells in Rc, estimate total energy in cone
1074 Float_t etCone = 0.0;
1075 Int_t nCellIn = 0;
1076 Int_t nCellOut = 0;
1077 rc = header->GetRadius();
1078 for(Int_t ncell =0; ncell < nCell; ncell++)
1079 {
1080 if(flagCell[ncell] != 0) continue; // cell used before
1081 //calculate dr
1082 deta = etaCell[ncell] - eta;
1083 dphi = phiCell[ncell] - phi;
1084 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1085 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1086 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1087 if(dr <= rc){ // cell in cone
1088 flagCell[ncell] = -1;
1089 etCone+=etCell[ncell];
1090 nCellIn++;
1091 }
1092 else nCellOut++;
1093 }
1094
1095 // Select jets with et > background
1096 // estimate max fluctuation of background in cone
1097 Double_t ncellin = (Double_t)nCellIn;
1098 Double_t ntcell = (Double_t)nCell;
1099 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/ntcell);
1100 // min cone et
1101 Double_t etcmin = etCone ; // could be used etCone - etmin !!
1102 //decisions !! etbmax < etcmin
1103
1104 for(Int_t mcell =0; mcell < nCell; mcell++){
1105 if(flagCell[mcell] == -1){
1106 if(etbmax < etcmin)
1107 flagCell[mcell] = 1; //flag cell as used
1108 else
1109 flagCell[mcell] = 0; // leave it free
1110 }
1111 }
1112 //store tmp jet info !!!
1113
1114 if(etbmax < etcmin) {
1115 etaAlgoJet[nJets] = eta;
1116 phiAlgoJet[nJets] = phi;
1117 etAlgoJet[nJets] = etCone;
1118 ncellsAlgoJet[nJets] = nCellIn;
1119 nJets++;
1120 }
1121
1122 } // end of cells loop
ee7de0dd 1123
1124 //reorder jets by et in cone
1125 //sort jets by energy
1126 Int_t * idx = new Int_t[nJets];
1127 TMath::Sort(nJets, etAlgoJet, idx);
8838ab7a 1128 for(Int_t p = 0; p < nJets; p++)
1129 {
1130 etaJet[p] = etaAlgoJet[idx[p]];
1131 phiJet[p] = phiAlgoJet[idx[p]];
1132 etJet[p] = etAlgoJet[idx[p]];
1133 etallJet[p] = etAlgoJet[idx[p]];
1134 ncellsJet[p] = ncellsAlgoJet[idx[p]];
1135 }
1136
ee7de0dd 1137 //delete
1138 delete index;
1139 delete idx;
1140
1141}
ee7de0dd 1142
8838ab7a 1143////////////////////////////////////////////////////////////////////////
c345674e 1144void AliUA1JetFinderV2::SubtractBackg(const Int_t& nIn, const Int_t&nJ, Float_t& etbgTotalN, const Float_t* ptT, const Int_t* vectT,
1145 const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* cFlag2T,
1146 const Int_t* sFlagT, Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1147 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1148{
8838ab7a 1149 //
1150 // Background subtraction using cone method but without correction in dE/deta distribution
1151 // Cases to take into account the EMCal geometry are included
1152 //
1153
ee7de0dd 1154 //calculate energy inside and outside cones
1155 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
08c28025 1156 fOpt = fReader->GetReaderHeader()->GetDetector();
be6e5811 1157 fDebug = fReader->GetReaderHeader()->GetDebug();
ee7de0dd 1158 Float_t rc= header->GetRadius();
1159 Float_t etIn[30];
1160 Float_t etOut = 0;
8838ab7a 1161
1162 for(Int_t j=0;j<30;j++){etIn[j]=0.;}
1163
ee7de0dd 1164 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
8838ab7a 1165
1166 for(Int_t ijet=0; ijet<nJ; ijet++){
1167
1168 Float_t deta = etaT[jpart] - etaJet[ijet];
1169 Float_t dphi = phiT[jpart] - phiJet[ijet];
1170 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1171 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1172
1173 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1174 if(dr <= rc){ // particles inside this cone
1175 multJet[ijet]+=vectT[jpart];
1176 injet[jpart] = ijet;
1177
1178 if(cFlagT[jpart] == 1 || cFlag2T[jpart] == 1){ // pt cut
1179 etIn[ijet] += ptT[jpart];
1180 if(sFlagT[jpart] == 1) etsigJet[ijet]+= ptT[jpart];
1181 }
1182 break;
1183 }
1184 }// end jets loop
1185
1186 if(injet[jpart] == -1 && (cFlagT[jpart] == 1 || cFlag2T[jpart] == 1)){
1187 etOut += ptT[jpart]; // particle outside cones and pt cut
1188 }
ee7de0dd 1189 } //end particle loop
1190
1191 //estimate jets and background areas
8838ab7a 1192 // TPC case
1193 if(fOpt == 0 || fOpt == 1){
1194 Float_t areaJet[30];
1195 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1196
1197 for(Int_t k=0; k<nJ; k++){
ee7de0dd 1198 Float_t detamax = etaJet[k] + rc;
1199 Float_t detamin = etaJet[k] - rc;
1200 Float_t accmax = 0.0; Float_t accmin = 0.0;
1201 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1202 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1203 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1204 }
1205 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1206 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1207 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1208 }
1209 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1210 areaOut = areaOut - areaJet[k];
8838ab7a 1211 }
1212 //subtract background using area method
1213 for(Int_t ljet=0; ljet<nJ; ljet++){
1214 Float_t areaRatio = areaJet[ljet]/areaOut;
1215 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1216 }
1217
1218 // estimate new total background
1219 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1220 etbgTotalN = etOut*areaT/areaOut;
1221 }
1222 else { // If EMCal included
1223 Float_t areaJet[30];
1224 Float_t areaOut = 2*(header->GetLegoEtaMax())*(header->GetLegoPhiMax() - header->GetLegoPhiMin());
1225 for(Int_t k=0; k<nJ; k++){
1226 Float_t detamax = etaJet[k] + rc;
1227 Float_t detamin = etaJet[k] - rc;
1228 Float_t dphimax = phiJet[k] + rc;
1229 Float_t dphimin = phiJet[k] - rc;
1230 Float_t eMax = header->GetLegoEtaMax();
1231 Float_t eMin = header->GetLegoEtaMin();
1232 Float_t pMax = header->GetLegoPhiMax();
1233 Float_t pMin = header->GetLegoPhiMin();
1234 Float_t accetamax = 0.0; Float_t accetamin = 0.0;
1235 Float_t accphimax = 0.0; Float_t accphimin = 0.0;
1236 if((detamax > eMax && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1237 (detamax > eMax && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1238 Float_t h = eMax - etaJet[k];
1239 accetamax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1240 }
1241 if((detamin < eMin && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1242 (detamin < eMin && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1243 Float_t h = eMax + etaJet[k];
1244 accetamin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1245 }
1246 if((dphimax > pMax && detamax >= (eMin+2*rc) && detamax <= eMax )||
1247 (dphimax > pMax && detamin <= (eMax-2*rc) && detamin >= eMin )){
1248 Float_t h = pMax - phiJet[k];
1249 accphimax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1250 }
1251 if((dphimin < eMin && detamax >= (eMin+2*rc) && detamax <= eMax )||
1252 (dphimin < eMin && detamin <= (eMax-2*rc) && detamin >= eMin )){
1253 Float_t h = phiJet[k] - pMin;
1254 accphimin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1255 }
1256
1257 if(detamax > eMax && dphimax > pMax ){
1258 Float_t he = eMax - etaJet[k];
1259 Float_t hp = pMax - phiJet[k];
1260 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1261 Float_t alphae = TMath::ACos(he/rc);
1262 Float_t alphap = TMath::ACos(hp/rc);
1263 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1264 if(rlim <= rc){
1265 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1266 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1267 }
1268 if(rlim > rc){
1269 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1270 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1271 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1272 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1273 }
1274 }
1275
1276 if(detamax > eMax && dphimin < pMin ){
1277 Float_t he = eMax - etaJet[k];
1278 Float_t hp = phiJet[k] - pMin;
1279 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1280 Float_t alphae = TMath::ACos(he/rc);
1281 Float_t alphap = TMath::ACos(hp/rc);
1282 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1283 if(rlim <= rc){
1284 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1285 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1286 }
1287 if(rlim > rc){
1288 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1289 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1290 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1291 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1292 }
1293 }
1294
1295 if(detamin < eMin && dphimax > pMax ){
1296 Float_t he = eMax + etaJet[k];
1297 Float_t hp = pMax - phiJet[k];
1298 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1299 Float_t alphae = TMath::ACos(he/rc);
1300 Float_t alphap = TMath::ACos(hp/rc);
1301 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1302 if(rlim <= rc){
1303 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1304 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1305 }
1306 if(rlim > rc){
1307 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1308 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1309 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1310 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1311 }
1312 }
1313
1314 if(detamin < eMin && dphimin < pMin ){
1315 Float_t he = eMax + etaJet[k];
1316 Float_t hp = phiJet[k] - pMin;
1317 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1318 Float_t alphae = TMath::ACos(he/rc);
1319 Float_t alphap = TMath::ACos(hp/rc);
1320 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1321 if(rlim <= rc){
1322 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1323 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1324 }
1325 if(rlim > rc){
1326 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1327 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1328 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1329 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1330 }
1331 }
1332 areaJet[k] = rc*rc*TMath::Pi() - accetamax - accetamin - accphimax - accphimin;
1333 areaOut = areaOut - areaJet[k];
1334 } // end loop on jets
1335
1336 //subtract background using area method
1337 for(Int_t ljet=0; ljet<nJ; ljet++){
1338 Float_t areaRatio = areaJet[ljet]/areaOut;
1339 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1340 }
1341
1342 // estimate new total background
1343 Float_t areaT = 2*(header->GetLegoEtaMax()*header->GetLegoPhiMax());
1344 etbgTotalN = etOut*areaT/areaOut;
1345 }
1346
1347}
1348
1349////////////////////////////////////////////////////////////////////////
be6e5811 1350void AliUA1JetFinderV2::SubtractBackgC(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN,
c345674e 1351 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT,
1352 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1353 Float_t* const etsigJet,Int_t* const multJet, Int_t* const injet)
8838ab7a 1354{
1355 //background subtraction using cone method but without correction in dE/deta distribution
1356
1357 //calculate energy inside and outside cones
1358 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1359 Float_t rc= header->GetRadius();
1360 Float_t etIn[30];
1361 Float_t etOut = 0;
1362 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1363 // if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut
1364 for(Int_t ijet=0; ijet<nJ; ijet++){
1365 Float_t deta = etaT[jpart] - etaJet[ijet];
1366 Float_t dphi = phiT[jpart] - phiJet[ijet];
1367 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1368 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1369 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1370 if(dr <= rc){ // particles inside this cone
1371 multJet[ijet]++;
1372 injet[jpart] = ijet;
1373 if((fReader->GetCutFlag(jpart)) == 1){ // pt cut
1374 etIn[ijet] += ptT[jpart];
1375 if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet]+= ptT[jpart];
1376 }
1377 break;
1378 }
1379 }// end jets loop
1380 if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1)
1381 etOut += ptT[jpart]; // particle outside cones and pt cut
1382 } //end particle loop
1383
1384 //estimate jets and background areas
1385 Float_t areaJet[30];
1386 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1387 for(Int_t k=0; k<nJ; k++){
1388 Float_t detamax = etaJet[k] + rc;
1389 Float_t detamin = etaJet[k] - rc;
1390 Float_t accmax = 0.0; Float_t accmin = 0.0;
1391 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
1392 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1393 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1394 }
1395 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
1396 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1397 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1398 }
1399 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1400 areaOut = areaOut - areaJet[k];
ee7de0dd 1401 }
1402 //subtract background using area method
1403 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1404 Float_t areaRatio = areaJet[ljet]/areaOut;
1405 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
ee7de0dd 1406 }
8838ab7a 1407
ee7de0dd 1408 // estimate new total background
1409 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1410 etbgTotalN = etOut*areaT/areaOut;
8838ab7a 1411
ee7de0dd 1412}
1413
ee7de0dd 1414
8838ab7a 1415////////////////////////////////////////////////////////////////////////
be6e5811 1416void AliUA1JetFinderV2::SubtractBackgStat(const Int_t& nIn, const Int_t&nJ,Float_t&etbgTotalN,
c345674e 1417 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT,
1418 const Int_t* sFlagT, Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1419 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1420{
1421
1422 //background subtraction using statistical method
1423 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1424 Float_t etbgStat = header->GetBackgStat(); // pre-calculated background
8838ab7a 1425
ee7de0dd 1426 //calculate energy inside
1427 Float_t rc= header->GetRadius();
1428 Float_t etIn[30];
8838ab7a 1429
1430 for(Int_t jpart = 0; jpart < nIn; jpart++)
1431 { // loop for all particles in array
1432
1433 for(Int_t ijet=0; ijet<nJ; ijet++)
1434 {
1435 Float_t deta = etaT[jpart] - etaJet[ijet];
1436 Float_t dphi = phiT[jpart] - phiJet[ijet];
1437 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1438 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1439 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1440 if(dr <= rc){ // particles inside this cone
1441 multJet[ijet]++;
1442 injet[jpart] = ijet;
1443 if(cFlagT[jpart] == 1){ // pt cut
1444 etIn[ijet]+= ptT[jpart];
1445 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1446 }
1447 break;
1448 }
1449 }// end jets loop
1450 } //end particle loop
1451
ee7de0dd 1452 //calc jets areas
1453 Float_t areaJet[30];
1454 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
8838ab7a 1455 for(Int_t k=0; k<nJ; k++)
1456 {
ee7de0dd 1457 Float_t detamax = etaJet[k] + rc;
1458 Float_t detamin = etaJet[k] - rc;
1459 Float_t accmax = 0.0; Float_t accmin = 0.0;
1460 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1461 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1462 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1463 }
1464 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1465 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1466 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1467 }
1468 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
8838ab7a 1469 }
ee7de0dd 1470
1471 //subtract background using area method
1472 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1473 Float_t areaRatio = areaJet[ljet]/areaOut;
1474 etJet[ljet] = etIn[ljet]-etbgStat*areaRatio; // subtraction
ee7de0dd 1475 }
8838ab7a 1476
ee7de0dd 1477 etbgTotalN = etbgStat;
ee7de0dd 1478}
1479
1480////////////////////////////////////////////////////////////////////////
c345674e 1481void AliUA1JetFinderV2::SubtractBackgCone(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
1482 Float_t* ptT, Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* sFlagT,
1483 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1484 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1485{
8838ab7a 1486 // Cone background subtraction method taking into acount dEt/deta distribution
1487 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1488 //general
1489 Float_t rc= header->GetRadius();
1490 Float_t etamax = header->GetLegoEtaMax();
1491 Float_t etamin = header->GetLegoEtaMin();
1492 Int_t ndiv = 100;
1493
1494 // jet energy and area arrays
1495 TH1F* hEtJet[30];
1496 TH1F* hAreaJet[30];
1497 for(Int_t mjet=0; mjet<nJ; mjet++){
1498 char hEtname[256]; char hAreaname[256];
1499 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1500 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax);
1501 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax);
ee7de0dd 1502 }
8838ab7a 1503 // background energy and area
1504 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax);
1505 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax);
1506
1507 //fill energies
1508 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1509 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1510 Float_t deta = etaT[jpart] - etaJet[ijet];
1511 Float_t dphi = phiT[jpart] - phiJet[ijet];
1512 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1513 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1514 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1515 if(dr <= rc){ // particles inside this cone
1516 injet[jpart] = ijet;
1517 multJet[ijet]++;
1518 if(cFlagT[jpart] == 1){// pt cut
1519 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone
1520 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1521 }
1522 break;
1523 }
1524 }// end jets loop
1525
1526 if(injet[jpart] == -1 && cFlagT[jpart] == 1)
1527 hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1528 } //end particle loop
1529
8838ab7a 1530 //calc areas
1531 Float_t eta0 = etamin;
1532 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1533 Float_t eta1 = eta0 + etaw;
1534 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1535 Float_t etac = eta0 + etaw/2.0;
1536 Float_t areabg = etaw*2.0*TMath::Pi();
1537 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1538 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1539 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1540 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1541 Float_t areaj = 0.0;
1542 if(deta0 > rc && deta1 < rc){
1543 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1544 areaj = acc1;
1545 }
1546 if(deta0 < rc && deta1 > rc){
1547 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1548 areaj = acc0;
1549 }
1550 if(deta0 < rc && deta1 < rc){
1551 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1552 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1553 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1554 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1555 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1556 }
1557 hAreaJet[ijet]->Fill(etac,areaj);
1558 areabg = areabg - areaj;
1559 } // end jets loop
1560 hAreaBackg->Fill(etac,areabg);
1561 eta0 = eta1;
1562 eta1 = eta1 + etaw;
1563 } // end loop for all eta bins
1564
1565 //subtract background
1566 for(Int_t kjet=0; kjet<nJ; kjet++){
1567 etJet[kjet] = 0.0; // first clear etJet for this jet
1568 for(Int_t bin = 0; bin< ndiv; bin++){
1569 if(hAreaJet[kjet]->GetBinContent(bin)){
1570 Float_t areab = hAreaBackg->GetBinContent(bin);
1571 Float_t etb = hEtBackg->GetBinContent(bin);
1572 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1573 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR); //subtraction
1574 }
1575 }
1576 }
ee7de0dd 1577
8838ab7a 1578 // calc background total
1579 Double_t etOut = hEtBackg->Integral();
1580 Double_t areaOut = hAreaBackg->Integral();
1581 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1582 etbgTotalN = etOut*areaT/areaOut;
1583
1584 //delete
1585 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1586 delete hEtJet[ljet];
1587 delete hAreaJet[ljet];
1588 }
ee7de0dd 1589
8838ab7a 1590 delete hEtBackg;
1591 delete hAreaBackg;
1592}
ee7de0dd 1593
8838ab7a 1594////////////////////////////////////////////////////////////////////////
be6e5811 1595void AliUA1JetFinderV2::SubtractBackgRatio(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
c345674e 1596 Float_t* ptT, Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* sFlagT,
1597 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1598 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1599{
8838ab7a 1600 // Ratio background subtraction method taking into acount dEt/deta distribution
1601 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1602 //factor F calc before
1603 Float_t bgRatioCut = header->GetBackgCutRatio();
1604
1605 //general
1606 Float_t rc= header->GetRadius();
1607 Float_t etamax = header->GetLegoEtaMax();
1608 Float_t etamin = header->GetLegoEtaMin();
1609 Int_t ndiv = 100;
1610
1611 // jet energy and area arrays
1612 TH1F* hEtJet[30];
1613 TH1F* hAreaJet[30];
1614 for(Int_t mjet=0; mjet<nJ; mjet++){
1615 char hEtname[256]; char hAreaname[256];
1616 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1617 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); // change range
1618 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); // change range
ee7de0dd 1619 }
8838ab7a 1620 // background energy and area
1621 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); // change range
1622 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); // change range
1623
1624 //fill energies
1625 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1626 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1627 Float_t deta = etaT[jpart] - etaJet[ijet];
1628 Float_t dphi = phiT[jpart] - phiJet[ijet];
1629 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1630 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1631 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1632 if(dr <= rc){ // particles inside this cone
1633 multJet[ijet]++;
1634 injet[jpart] = ijet;
1635 if(cFlagT[jpart] == 1){ //pt cut
1636 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone and pt cut
1637 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1638 }
1639 break;
1640 }
1641 }// end jets loop
1642 if(injet[jpart] == -1) hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1643 } //end particle loop
1644
8838ab7a 1645 //calc areas
1646 Float_t eta0 = etamin;
1647 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1648 Float_t eta1 = eta0 + etaw;
1649 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1650 Float_t etac = eta0 + etaw/2.0;
1651 Float_t areabg = etaw*2.0*TMath::Pi();
1652 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1653 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1654 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1655 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1656 Float_t areaj = 0.0;
1657 if(deta0 > rc && deta1 < rc){
1658 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1659 areaj = acc1;
1660 }
1661 if(deta0 < rc && deta1 > rc){
1662 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1663 areaj = acc0;
1664 }
1665 if(deta0 < rc && deta1 < rc){
1666 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1667 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1668 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1669 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1670 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1671 }
1672 hAreaJet[ijet]->Fill(etac,areaj);
1673 areabg = areabg - areaj;
1674 } // end jets loop
1675 hAreaBackg->Fill(etac,areabg);
1676 eta0 = eta1;
1677 eta1 = eta1 + etaw;
1678 } // end loop for all eta bins
1679
1680 //subtract background
1681 for(Int_t kjet=0; kjet<nJ; kjet++){
1682 etJet[kjet] = 0.0; // first clear etJet for this jet
1683 for(Int_t bin = 0; bin< ndiv; bin++){
1684 if(hAreaJet[kjet]->GetBinContent(bin)){
1685 Float_t areab = hAreaBackg->GetBinContent(bin);
1686 Float_t etb = hEtBackg->GetBinContent(bin);
1687 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1688 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR*bgRatioCut); //subtraction
1689 }
1690 }
1691 }
1692
1693 // calc background total
1694 Double_t etOut = hEtBackg->Integral();
1695 Double_t areaOut = hAreaBackg->Integral();
1696 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1697 etbgTotalN = etOut*areaT/areaOut;
1698
1699 //delete
1700 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1701 delete hEtJet[ljet];
1702 delete hAreaJet[ljet];
1703 }
1704
1705 delete hEtBackg;
1706 delete hAreaBackg;
ee7de0dd 1707}
1708
1709////////////////////////////////////////////////////////////////////////
ee7de0dd 1710void AliUA1JetFinderV2::Reset()
1711{
1712 fLego->Reset();
ee7de0dd 1713 AliJetFinder::Reset();
1714}
1715
1716////////////////////////////////////////////////////////////////////////
446dbc09 1717void AliUA1JetFinderV2::WriteJHeaderToFile() const
ee7de0dd 1718{
1719 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1720 header->Write();
1721}
1722
1723////////////////////////////////////////////////////////////////////////
8838ab7a 1724void AliUA1JetFinderV2::InitTask(TChain* tree)
ee7de0dd 1725{
8838ab7a 1726
ee7de0dd 1727 // initializes some variables
1728 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 1729 // book lego
1730 fLego = new TH2F("legoH","eta-phi",
1731 header->GetLegoNbinEta(), header->GetLegoEtaMin(),
1732 header->GetLegoEtaMax(), header->GetLegoNbinPhi(),
1733 header->GetLegoPhiMin(), header->GetLegoPhiMax());
1734
ee7de0dd 1735 fDebug = fReader->GetReaderHeader()->GetDebug();
1736 fOpt = fReader->GetReaderHeader()->GetDetector();
8838ab7a 1737
1738 // Tasks initialization
ee7de0dd 1739 if(fOpt>0)
8838ab7a 1740 fReader->CreateTasks(tree);
ee7de0dd 1741
1742}