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ee7de0dd 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/* $Id$ */
17
18//---------------------------------------------------------------------
8838ab7a 19// UA1 Cone Algorithm Jet finder for charged + neutral jet studies
20// manages the search for jets using charged particle momentum and
21// neutral cell energy information
22// Based on UA1 V1 (from R. Diaz)
23// Author: magali.estienne@subatech.in2p3.fr
ee7de0dd 24//---------------------------------------------------------------------
25
ee7de0dd 26#include <TClonesArray.h>
ee7de0dd 27#include <TH1F.h>
28#include <TH2F.h>
29#include <TLorentzVector.h>
30#include <TMath.h>
31#include <TRefArray.h>
be6e5811 32#include "TFile.h"
ee7de0dd 33
34#include "AliUA1JetFinderV2.h"
35#include "AliUA1JetHeaderV1.h"
36#include "AliJetUnitArray.h"
952b368c 37#include "AliJetReaderHeader.h"
38#include "AliJetReader.h"
39#include "AliJetHeader.h"
ee7de0dd 40
be6e5811 41class TArrayF;
42class TFile;
43class AliJetReader;
44class AliAODJet;
ee7de0dd 45
46ClassImp(AliUA1JetFinderV2)
47
ee7de0dd 48
8838ab7a 49////////////////////////////////////////////////////////////////////////
9e4cc50d 50AliUA1JetFinderV2::AliUA1JetFinderV2() :
8838ab7a 51 AliJetFinder(),
52 fLego(0),
8838ab7a 53 fOpt(0)
ee7de0dd 54{
8838ab7a 55 //
ee7de0dd 56 // Constructor
8838ab7a 57 //
ee7de0dd 58}
59
60////////////////////////////////////////////////////////////////////////
ee7de0dd 61AliUA1JetFinderV2::~AliUA1JetFinderV2()
ee7de0dd 62{
8838ab7a 63 //
64 // Destructor
65 //
ee7de0dd 66}
67
68////////////////////////////////////////////////////////////////////////
8838ab7a 69void AliUA1JetFinderV2::FindJetsC()
70{
71 //
72 // Used to find jets using charged particle momentum information
73 //
74 // 1) Fill cell map array
75 // 2) calculate total energy and fluctuation level
76 // 3) Run algorithm
77 // 3.1) look centroides in cell map
78 // 3.2) calculate total energy in cones
79 // 3.3) flag as a possible jet
80 // 3.4) reorder cones by energy
81 // 4) subtract backg in accepted jets
82 // 5) fill AliJet list
83
84 // Transform input to pt,eta,phi plus lego
85
86 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
87 TClonesArray* lvArray = fReader->GetMomentumArray();
88 Int_t nIn = lvArray->GetEntries();
cc6a2227 89 fDebug = fHeader->GetDebug();
8838ab7a 90
91 if (nIn == 0) return;
92
93 // local arrays for input
94 Float_t* ptT = new Float_t[nIn];
95 Float_t* etaT = new Float_t[nIn];
96 Float_t* phiT = new Float_t[nIn];
446dbc09 97 Int_t* cFlagT = new Int_t[nIn]; // Temporarily added
98 Int_t* sFlagT = new Int_t[nIn]; // Temporarily added
8838ab7a 99 Int_t* injet = new Int_t[nIn];
100
101 //total energy in array
102 Float_t etbgTotal = 0.0;
103 TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0);
104
105 // load input vectors and calculate total energy in array
106 for (Int_t i = 0; i < nIn; i++){
107 TLorentzVector *lv = (TLorentzVector*) lvArray->At(i);
108 ptT[i] = lv->Pt();
109 etaT[i] = lv->Eta();
110 phiT[i] = ((lv->Phi() < 0) ? (lv->Phi()) + 2 * TMath::Pi() : lv->Phi());
be6e5811 111 cFlagT[i] = fReader->GetCutFlag(i);
112 sFlagT[i] = fReader->GetSignalFlag(i);
8838ab7a 113
114 if (fReader->GetCutFlag(i) != 1) continue;
115 fLego->Fill(etaT[i], phiT[i], ptT[i]);
116 hPtTotal->Fill(ptT[i]);
117 etbgTotal+= ptT[i];
118 }
119
8838ab7a 120
121 // calculate total energy and fluctuation in map
122 Double_t meanpt = hPtTotal->GetMean();
123 Double_t ptRMS = hPtTotal->GetRMS();
124 Double_t npart = hPtTotal->GetEntries();
125 Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS);
126
127 // arrays to hold jets
be6e5811 128 Float_t* etaJet = new Float_t[30]; // eta jet
129 Float_t* phiJet = new Float_t[30]; // phi jet
130 Float_t* etJet = new Float_t[30]; // et jet
131 Float_t* etsigJet = new Float_t[30]; // signal et in jet
8838ab7a 132 Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable)
133 Int_t* ncellsJet = new Int_t[30];
134 Int_t* multJet = new Int_t[30];
135 //--- Added for jet reordering at the end of the jet finding procedure
136 Float_t* etaJetOk = new Float_t[30];
137 Float_t* phiJetOk = new Float_t[30];
138 Float_t* etJetOk = new Float_t[30];
be6e5811 139 Float_t* etsigJetOk = new Float_t[30]; // signal et in jet
8838ab7a 140 Float_t* etallJetOk = new Float_t[30]; // total et in jet (tmp variable)
141 Int_t* ncellsJetOk = new Int_t[30];
142 Int_t* multJetOk = new Int_t[30];
143 //--------------------------
144 Int_t nJets; // to hold number of jets found by algorithm
145 Int_t nj; // number of jets accepted
146 Float_t prec = header->GetPrecBg();
147 Float_t bgprec = 1;
148 while(bgprec > prec){
149 //reset jet arrays in memory
150 memset(etaJet,0,sizeof(Float_t)*30);
151 memset(phiJet,0,sizeof(Float_t)*30);
152 memset(etJet,0,sizeof(Float_t)*30);
153 memset(etallJet,0,sizeof(Float_t)*30);
154 memset(etsigJet,0,sizeof(Float_t)*30);
155 memset(ncellsJet,0,sizeof(Int_t)*30);
156 memset(multJet,0,sizeof(Int_t)*30);
157 //--- Added for jet reordering at the end of the jet finding procedure
158 memset(etaJetOk,0,sizeof(Float_t)*30);
159 memset(phiJetOk,0,sizeof(Float_t)*30);
160 memset(etJetOk,0,sizeof(Float_t)*30);
161 memset(etallJetOk,0,sizeof(Float_t)*30);
162 memset(etsigJetOk,0,sizeof(Float_t)*30);
163 memset(ncellsJetOk,0,sizeof(Int_t)*30);
164 memset(multJetOk,0,sizeof(Int_t)*30);
165 //--------------------------
166 nJets = 0;
167 nj = 0;
168
169 // reset particles-jet array in memory
170 memset(injet,-1,sizeof(Int_t)*nIn);
171 //run cone algorithm finder
172 RunAlgoritmC(etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,etallJet,ncellsJet);
173
174 //run background subtraction
175 if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event
176 nj = header->GetNAcceptJets();
177 else
178 nj = nJets;
179 //subtract background
180 Float_t etbgTotalN = 0.0; //new background
181 if(header->GetBackgMode() == 1) // standard
8838ab7a 182 SubtractBackgC(nIn,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
183 if(header->GetBackgMode() == 2) //cone
184 SubtractBackgCone(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
185 if(header->GetBackgMode() == 3) //ratio
186 SubtractBackgRatio(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
187 if(header->GetBackgMode() == 4) //statistic
188 SubtractBackgStat(nIn,nj,etbgTotalN,ptT,etaT,phiT,cFlagT,sFlagT,etJet,etaJet,phiJet,etsigJet,multJet,injet);
189 //calc precision
446dbc09 190 if(TMath::Abs(etbgTotalN) > 0.001)
8838ab7a 191 bgprec = (etbgTotal - etbgTotalN)/etbgTotalN;
192 else
193 bgprec = 0;
194 etbgTotal = etbgTotalN; // update with new background estimation
195 } //end while
196
197 // add jets to list
198 Int_t* idxjets = new Int_t[nj];
199 Int_t nselectj = 0;
200 printf("Found %d jets \n", nj);
ee7de0dd 201
8838ab7a 202 // Reorder jets by et in cone
203 Int_t * idx = new Int_t[nJets];
204 TMath::Sort(nJets, etJet, idx);
205 for(Int_t p = 0; p < nJets; p++){
206 etaJetOk[p] = etaJet[idx[p]];
207 phiJetOk[p] = phiJet[idx[p]];
208 etJetOk[p] = etJet[idx[p]];
209 etallJetOk[p] = etJet[idx[p]];
be6e5811 210 etsigJetOk[p] = etsigJet[idx[p]];
8838ab7a 211 ncellsJetOk[p] = ncellsJet[idx[p]];
212 multJetOk[p] = multJet[idx[p]];
213 }
214
215 for(Int_t kj=0; kj<nj; kj++)
216 {
217 if ((etaJetOk[kj] > (header->GetJetEtaMax())) ||
218 (etaJetOk[kj] < (header->GetJetEtaMin())) ||
219 (etJetOk[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin
220 Float_t px, py,pz,en; // convert to 4-vector
221 px = etJetOk[kj] * TMath::Cos(phiJetOk[kj]);
222 py = etJetOk[kj] * TMath::Sin(phiJetOk[kj]);
223 pz = etJetOk[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJetOk[kj])));
224 en = TMath::Sqrt(px * px + py * py + pz * pz);
8838ab7a 225
226 AliAODJet jet(px, py, pz, en);
227 jet.Print("");
228
229 AddJet(jet);
230
231 idxjets[nselectj] = kj;
232 nselectj++;
233 }
ee7de0dd 234
8838ab7a 235 //add signal percentage and total signal in AliJets for analysis tool
236 Float_t* percentage = new Float_t[nselectj];
237 Int_t* ncells = new Int_t[nselectj];
238 Int_t* mult = new Int_t[nselectj];
239 for(Int_t i = 0; i< nselectj; i++)
240 {
241 percentage[i] = etsigJetOk[idxjets[i]]/etJetOk[idxjets[i]];
242 ncells[i] = ncellsJetOk[idxjets[i]];
243 mult[i] = multJetOk[idxjets[i]];
244 }
245
246 //add particle-injet relationship ///
247 for(Int_t bj = 0; bj < nIn; bj++)
248 {
249 if(injet[bj] == -1) continue; //background particle
250 Int_t bflag = 0;
251 for(Int_t ci = 0; ci< nselectj; ci++){
252 if(injet[bj] == idxjets[ci]){
253 injet[bj]= ci;
254 bflag++;
255 break;
256 }
257 }
258 if(bflag == 0) injet[bj] = -1; // set as background particle
259 }
260
8838ab7a 261
262 //delete
263 delete[] ptT;
264 delete[] etaT;
265 delete[] phiT;
266 delete[] cFlagT;
267 delete[] sFlagT;
268 delete[] injet;
269 delete[] hPtTotal;
270 delete[] etaJet;
271 delete[] phiJet;
272 delete[] etJet;
273 delete[] etsigJet;
274 delete[] etallJet;
275 delete[] ncellsJet;
276 delete[] multJet;
277 delete[] idxjets;
278 delete[] percentage;
279 delete[] ncells;
280 delete[] mult;
281 //--- Added for jet reordering
282 delete etaJetOk;
283 delete phiJetOk;
284 delete etJetOk;
285 delete etsigJetOk;
286 delete etallJetOk;
287 delete ncellsJetOk;
288 delete multJetOk;
289 //--------------------------
290
291}
ee7de0dd 292
8838ab7a 293////////////////////////////////////////////////////////////////////////
294void AliUA1JetFinderV2::FindJets()
ee7de0dd 295{
8838ab7a 296 //
297 // Used to find jets using charged particle momentum information
298 // & neutral energy from calo cells
299 //
300 // 1) Fill cell map array
301 // 2) calculate total energy and fluctuation level
302 // 3) Run algorithm
303 // 3.1) look centroides in cell map
304 // 3.2) calculate total energy in cones
305 // 3.3) flag as a possible jet
306 // 3.4) reorder cones by energy
307 // 4) subtract backg in accepted jets
308 // 5) fill AliJet list
ee7de0dd 309
310 // transform input to pt,eta,phi plus lego
311
8838ab7a 312 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
313 TClonesArray* fUnit = fReader->GetUnitArray();
314 Int_t nCand = fReader->GetNumCandidate();
315 Int_t nCandCut = fReader->GetNumCandidateCut();
316 Int_t nIn = fUnit->GetEntries();
be6e5811 317 Float_t ptMin = fReader->GetReaderHeader()->GetPtCut();
ee7de0dd 318
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
cc6a2227 752 Int_t nCell = nIn;
ee7de0dd 753
8838ab7a 754 // Dump lego
755 // Check enough space! *to be done*
ee7de0dd 756 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 757 for(Int_t i=0; i<nCell; i++){
758 etCell[i] = etCell2[i];
759 etaCell[i] = etaCell2[i];
760 phiCell[i] = phiCell2[i];
761 flagCell[i] = flagCell2[i];
762 }
ee7de0dd 763
764 // Parameters from header
765 Float_t minmove = header->GetMinMove();
766 Float_t maxmove = header->GetMaxMove();
767 Float_t rc = header->GetRadius();
768 Float_t etseed = header->GetEtSeed();
769
8838ab7a 770 // Tmp array of jets form algoritm
ee7de0dd 771 Float_t etaAlgoJet[30];
772 Float_t phiAlgoJet[30];
773 Float_t etAlgoJet[30];
774 Int_t ncellsAlgoJet[30];
775
8838ab7a 776 // Run algorithm//
ee7de0dd 777
8838ab7a 778 // Sort cells by et
ee7de0dd 779 Int_t * index = new Int_t[nCell];
780 TMath::Sort(nCell, etCell, index);
781
8838ab7a 782 // Variable used in centroide loop
9dda5307 783 Float_t eta = 0.0;
784 Float_t phi = 0.0;
785 Float_t eta0 = 0.0;
786 Float_t phi0 = 0.0;
787 Float_t etab = 0.0;
788 Float_t phib = 0.0;
789 Float_t etas = 0.0;
790 Float_t phis = 0.0;
791 Float_t ets = 0.0;
792 Float_t deta = 0.0;
793 Float_t dphi = 0.0;
794 Float_t dr = 0.0;
795 Float_t etsb = 0.0;
ee7de0dd 796 Float_t etasb = 0.0;
797 Float_t phisb = 0.0;
9dda5307 798 Float_t dphib = 0.0;
ee7de0dd 799
8838ab7a 800 for(Int_t icell = 0; icell < nCell; icell++)
801 {
9dda5307 802 Int_t jcell = index[icell];
803 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
804 if(flagCell[jcell] != 0) continue; // if cell was used before
8838ab7a 805
9dda5307 806 eta = etaCell[jcell];
807 phi = phiCell[jcell];
808 eta0 = eta;
809 phi0 = phi;
810 etab = eta;
811 phib = phi;
812 ets = etCell[jcell];
813 etas = 0.0;
814 phis = 0.0;
815 etsb = ets;
816 etasb = 0.0;
817 phisb = 0.0;
8838ab7a 818 for(Int_t kcell =0; kcell < nCell; kcell++)
819 {
9dda5307 820 Int_t lcell = index[kcell];
821 if(lcell == jcell) continue; // cell itself
822 if(flagCell[lcell] != 0) continue; // cell used before
8838ab7a 823 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
9dda5307 824 //calculate dr
825 deta = etaCell[lcell] - eta;
8838ab7a 826 dphi = TMath::Abs(phiCell[lcell] - phi);
9dda5307 827 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
828 dr = TMath::Sqrt(deta * deta + dphi * dphi);
829 if(dr <= rc){
8838ab7a 830 // calculate offset from initiate cell
831 deta = etaCell[lcell] - eta0;
832 dphi = phiCell[lcell] - phi0;
833 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
834 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
835 etas = etas + etCell[lcell]*deta;
836 phis = phis + etCell[lcell]*dphi;
837 ets = ets + etCell[lcell];
838 //new weighted eta and phi including this cell
839 eta = eta0 + etas/ets;
840 phi = phi0 + phis/ets;
841 // if cone does not move much, just go to next step
842 dphib = TMath::Abs(phi - phib);
843 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
844 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
845 if(dr <= minmove) break;
846 // cone should not move more than max_mov
847 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
848 if(dr > maxmove){
849 eta = etab;
850 phi = phib;
851 ets = etsb;
852 etas = etasb;
853 phis = phisb;
854 } else { // store this loop information
855 etab = eta;
856 phib = phi;
857 etsb = ets;
858 etasb = etas;
859 phisb = phis;
860 }
861 } // inside cone
ee7de0dd 862 }//end of cells loop looking centroide
863
864 //avoid cones overloap (to be implemented in the future)
865
866 //flag cells in Rc, estimate total energy in cone
8838ab7a 867 Float_t etCone = 0.0;
868 Int_t nCellIn = 0;
869 Int_t nCellOut = 0;
870 rc = header->GetRadius();
871
872 for(Int_t ncell =0; ncell < nCell; ncell++)
873 {
874 if(flagCell[ncell] != 0) continue; // cell used before
875 //calculate dr
876 deta = etaCell[ncell] - eta;
877 // if(deta <= rc){ // Added to improve velocity -> to be tested
878 dphi = phiCell[ncell] - phi;
879 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
880 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
881 // if(dphi <= rc){ // Added to improve velocity -> to be tested
882 dr = TMath::Sqrt(deta * deta + dphi * dphi);
883 if(dr <= rc){ // cell in cone
884 flagCell[ncell] = -1;
885 etCone+=etCell[ncell];
886 nCellIn++;
887 }
888 else nCellOut++;
889 // } // end deta <= rc
890 // } // end dphi <= rc
ee7de0dd 891 }
892
8838ab7a 893 // select jets with et > background
894 // estimate max fluctuation of background in cone
895 Double_t ncellin = (Double_t)nCellIn;
896 Double_t ntcell = (Double_t)nCell;
897 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/(ntcell));
898 // min cone et
899 Double_t etcmin = etCone ; // could be used etCone - etmin !!
900 //decisions !! etbmax < etcmin
901
902 for(Int_t mcell =0; mcell < nCell; mcell++)
903 {
904 if(flagCell[mcell] == -1){
905 if(etbmax < etcmin)
906 flagCell[mcell] = 1; //flag cell as used
907 else
908 flagCell[mcell] = 0; // leave it free
909 }
ee7de0dd 910 }
8838ab7a 911 //store tmp jet info !!!
912 if(etbmax < etcmin)
913 {
914 etaAlgoJet[nJets] = eta;
915 phiAlgoJet[nJets] = phi;
916 etAlgoJet[nJets] = etCone;
917 ncellsAlgoJet[nJets] = nCellIn;
918 nJets++;
919 }
920
921 } // end of cells loop
922
923 for(Int_t p = 0; p < nJets; p++)
924 {
925 etaJet[p] = etaAlgoJet[p];
926 phiJet[p] = phiAlgoJet[p];
927 etJet[p] = etAlgoJet[p];
928 etallJet[p] = etAlgoJet[p];
929 ncellsJet[p] = ncellsAlgoJet[p];
930 }
931
932 //delete
933 delete index;
934
935}
936
937////////////////////////////////////////////////////////////////////////
938void AliUA1JetFinderV2::RunAlgoritmC(Float_t etbgTotal, Double_t dEtTotal, Int_t& nJets,
c345674e 939 Float_t* const etJet,Float_t* const etaJet, Float_t* const phiJet,
940 Float_t* const etallJet, Int_t* const ncellsJet)
8838ab7a 941{
942 // Dump lego
943 // Check enough space! *to be done*
944 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
945 Float_t etCell[60000]; //! Cell Energy
946 Float_t etaCell[60000]; //! Cell eta
947 Float_t phiCell[60000]; //! Cell phi
948 Int_t flagCell[60000]; //! Cell flag
949
950 Int_t nCell = 0;
951 TAxis* xaxis = fLego->GetXaxis();
952 TAxis* yaxis = fLego->GetYaxis();
953 Float_t e = 0.0;
954 for (Int_t i = 1; i <= header->GetLegoNbinEta(); i++)
955 {
956 for (Int_t j = 1; j <= header->GetLegoNbinPhi(); j++)
957 {
958 e = fLego->GetBinContent(i,j);
959 if (e < 0.0) continue; // don't include this cells
960 Float_t eta = xaxis->GetBinCenter(i);
961 Float_t phi = yaxis->GetBinCenter(j);
962 etCell[nCell] = e;
963 etaCell[nCell] = eta;
964 phiCell[nCell] = phi;
965 flagCell[nCell] = 0; //default
966 nCell++;
967 }
968 }
969
970 // Parameters from header
971 Float_t minmove = header->GetMinMove();
972 Float_t maxmove = header->GetMaxMove();
973 Float_t rc = header->GetRadius();
974 Float_t etseed = header->GetEtSeed();
975
976 // Tmp array of jets form algoritm
977 Float_t etaAlgoJet[30];
978 Float_t phiAlgoJet[30];
979 Float_t etAlgoJet[30];
980 Int_t ncellsAlgoJet[30];
981
982 // Run algorithm//
983
984 // Sort cells by et
985 Int_t * index = new Int_t[nCell];
986 TMath::Sort(nCell, etCell, index);
987 // variable used in centroide loop
988 Float_t eta = 0.0;
989 Float_t phi = 0.0;
990 Float_t eta0 = 0.0;
991 Float_t phi0 = 0.0;
992 Float_t etab = 0.0;
993 Float_t phib = 0.0;
994 Float_t etas = 0.0;
995 Float_t phis = 0.0;
996 Float_t ets = 0.0;
997 Float_t deta = 0.0;
998 Float_t dphi = 0.0;
999 Float_t dr = 0.0;
1000 Float_t etsb = 0.0;
1001 Float_t etasb = 0.0;
1002 Float_t phisb = 0.0;
1003 Float_t dphib = 0.0;
ee7de0dd 1004
8838ab7a 1005 for(Int_t icell = 0; icell < nCell; icell++)
1006 {
1007 Int_t jcell = index[icell];
1008 if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed
1009 if(flagCell[jcell] != 0) continue; // if cell was used before
1010
1011 eta = etaCell[jcell];
1012 phi = phiCell[jcell];
1013 eta0 = eta;
1014 phi0 = phi;
1015 etab = eta;
1016 phib = phi;
1017 ets = etCell[jcell];
1018 etas = 0.0;
1019 phis = 0.0;
1020 etsb = ets;
1021 etasb = 0.0;
1022 phisb = 0.0;
1023 for(Int_t kcell =0; kcell < nCell; kcell++)
1024 {
1025 Int_t lcell = index[kcell];
1026 if(lcell == jcell) continue; // cell itself
1027 if(flagCell[lcell] != 0) continue; // cell used before
1028 if(etCell[lcell] > etCell[jcell]) continue; // can this happen
1029 //calculate dr
1030 deta = etaCell[lcell] - eta;
1031 dphi = TMath::Abs(phiCell[lcell] - phi);
1032 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1033 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1034 if(dr <= rc)
1035 {
1036 // calculate offset from initiate cell
1037 deta = etaCell[lcell] - eta0;
1038 dphi = phiCell[lcell] - phi0;
1039 if (dphi < -TMath::Pi()) dphi= dphi + 2.0 * TMath::Pi();
1040 if (dphi > TMath::Pi()) dphi = dphi - 2.0 * TMath::Pi();
1041 etas = etas + etCell[lcell]*deta;
1042 phis = phis + etCell[lcell]*dphi;
1043 ets = ets + etCell[lcell];
1044 //new weighted eta and phi including this cell
1045 eta = eta0 + etas/ets;
1046 phi = phi0 + phis/ets;
1047 // if cone does not move much, just go to next step
1048 dphib = TMath::Abs(phi - phib);
1049 if (dphib > TMath::Pi()) dphib = 2. * TMath::Pi() - dphib;
1050 dr = TMath::Sqrt((eta-etab)*(eta-etab) + dphib * dphib);
1051 if(dr <= minmove) break;
1052 // cone should not move more than max_mov
1053 dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets));
1054 if(dr > maxmove){
1055 eta = etab;
1056 phi = phib;
1057 ets = etsb;
1058 etas = etasb;
1059 phis = phisb;
1060 } else { // store this loop information
1061 etab=eta;
1062 phib=phi;
1063 etsb = ets;
1064 etasb = etas;
1065 phisb = phis;
1066 }
1067 } // inside cone
1068 }//end of cells loop looking centroide
1069
1070 // Avoid cones overloap (to be implemented in the future)
1071
1072 // Flag cells in Rc, estimate total energy in cone
1073 Float_t etCone = 0.0;
1074 Int_t nCellIn = 0;
1075 Int_t nCellOut = 0;
1076 rc = header->GetRadius();
1077 for(Int_t ncell =0; ncell < nCell; ncell++)
1078 {
1079 if(flagCell[ncell] != 0) continue; // cell used before
1080 //calculate dr
1081 deta = etaCell[ncell] - eta;
1082 dphi = phiCell[ncell] - phi;
1083 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1084 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1085 dr = TMath::Sqrt(deta * deta + dphi * dphi);
1086 if(dr <= rc){ // cell in cone
1087 flagCell[ncell] = -1;
1088 etCone+=etCell[ncell];
1089 nCellIn++;
1090 }
1091 else nCellOut++;
1092 }
1093
1094 // Select jets with et > background
1095 // estimate max fluctuation of background in cone
1096 Double_t ncellin = (Double_t)nCellIn;
1097 Double_t ntcell = (Double_t)nCell;
1098 Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/ntcell);
1099 // min cone et
1100 Double_t etcmin = etCone ; // could be used etCone - etmin !!
1101 //decisions !! etbmax < etcmin
1102
1103 for(Int_t mcell =0; mcell < nCell; mcell++){
1104 if(flagCell[mcell] == -1){
1105 if(etbmax < etcmin)
1106 flagCell[mcell] = 1; //flag cell as used
1107 else
1108 flagCell[mcell] = 0; // leave it free
1109 }
1110 }
1111 //store tmp jet info !!!
1112
1113 if(etbmax < etcmin) {
1114 etaAlgoJet[nJets] = eta;
1115 phiAlgoJet[nJets] = phi;
1116 etAlgoJet[nJets] = etCone;
1117 ncellsAlgoJet[nJets] = nCellIn;
1118 nJets++;
1119 }
1120
1121 } // end of cells loop
ee7de0dd 1122
1123 //reorder jets by et in cone
1124 //sort jets by energy
1125 Int_t * idx = new Int_t[nJets];
1126 TMath::Sort(nJets, etAlgoJet, idx);
8838ab7a 1127 for(Int_t p = 0; p < nJets; p++)
1128 {
1129 etaJet[p] = etaAlgoJet[idx[p]];
1130 phiJet[p] = phiAlgoJet[idx[p]];
1131 etJet[p] = etAlgoJet[idx[p]];
1132 etallJet[p] = etAlgoJet[idx[p]];
1133 ncellsJet[p] = ncellsAlgoJet[idx[p]];
1134 }
1135
ee7de0dd 1136 //delete
1137 delete index;
1138 delete idx;
1139
1140}
ee7de0dd 1141
8838ab7a 1142////////////////////////////////////////////////////////////////////////
c345674e 1143void AliUA1JetFinderV2::SubtractBackg(const Int_t& nIn, const Int_t&nJ, Float_t& etbgTotalN, const Float_t* ptT, const Int_t* vectT,
1144 const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* cFlag2T,
1145 const Int_t* sFlagT, Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1146 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1147{
8838ab7a 1148 //
1149 // Background subtraction using cone method but without correction in dE/deta distribution
1150 // Cases to take into account the EMCal geometry are included
1151 //
1152
ee7de0dd 1153 //calculate energy inside and outside cones
1154 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
08c28025 1155 fOpt = fReader->GetReaderHeader()->GetDetector();
ee7de0dd 1156 Float_t rc= header->GetRadius();
1157 Float_t etIn[30];
1158 Float_t etOut = 0;
8838ab7a 1159
1160 for(Int_t j=0;j<30;j++){etIn[j]=0.;}
1161
ee7de0dd 1162 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
8838ab7a 1163
1164 for(Int_t ijet=0; ijet<nJ; ijet++){
1165
1166 Float_t deta = etaT[jpart] - etaJet[ijet];
1167 Float_t dphi = phiT[jpart] - phiJet[ijet];
1168 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1169 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1170
1171 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1172 if(dr <= rc){ // particles inside this cone
1173 multJet[ijet]+=vectT[jpart];
1174 injet[jpart] = ijet;
1175
1176 if(cFlagT[jpart] == 1 || cFlag2T[jpart] == 1){ // pt cut
1177 etIn[ijet] += ptT[jpart];
1178 if(sFlagT[jpart] == 1) etsigJet[ijet]+= ptT[jpart];
1179 }
1180 break;
1181 }
1182 }// end jets loop
1183
1184 if(injet[jpart] == -1 && (cFlagT[jpart] == 1 || cFlag2T[jpart] == 1)){
1185 etOut += ptT[jpart]; // particle outside cones and pt cut
1186 }
ee7de0dd 1187 } //end particle loop
1188
1189 //estimate jets and background areas
8838ab7a 1190 // TPC case
1191 if(fOpt == 0 || fOpt == 1){
1192 Float_t areaJet[30];
1193 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1194
1195 for(Int_t k=0; k<nJ; k++){
ee7de0dd 1196 Float_t detamax = etaJet[k] + rc;
1197 Float_t detamin = etaJet[k] - rc;
1198 Float_t accmax = 0.0; Float_t accmin = 0.0;
1199 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1200 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1201 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1202 }
1203 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1204 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1205 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1206 }
1207 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1208 areaOut = areaOut - areaJet[k];
8838ab7a 1209 }
1210 //subtract background using area method
1211 for(Int_t ljet=0; ljet<nJ; ljet++){
1212 Float_t areaRatio = areaJet[ljet]/areaOut;
1213 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1214 }
1215
1216 // estimate new total background
1217 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1218 etbgTotalN = etOut*areaT/areaOut;
1219 }
1220 else { // If EMCal included
1221 Float_t areaJet[30];
1222 Float_t areaOut = 2*(header->GetLegoEtaMax())*(header->GetLegoPhiMax() - header->GetLegoPhiMin());
1223 for(Int_t k=0; k<nJ; k++){
1224 Float_t detamax = etaJet[k] + rc;
1225 Float_t detamin = etaJet[k] - rc;
1226 Float_t dphimax = phiJet[k] + rc;
1227 Float_t dphimin = phiJet[k] - rc;
1228 Float_t eMax = header->GetLegoEtaMax();
1229 Float_t eMin = header->GetLegoEtaMin();
1230 Float_t pMax = header->GetLegoPhiMax();
1231 Float_t pMin = header->GetLegoPhiMin();
1232 Float_t accetamax = 0.0; Float_t accetamin = 0.0;
1233 Float_t accphimax = 0.0; Float_t accphimin = 0.0;
1234 if((detamax > eMax && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1235 (detamax > eMax && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1236 Float_t h = eMax - etaJet[k];
1237 accetamax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1238 }
1239 if((detamin < eMin && dphimax >= (pMin+2*rc) && dphimax <= pMax )||
1240 (detamin < eMin && dphimin <= (pMax-2*rc) && dphimin >= pMin )){
1241 Float_t h = eMax + etaJet[k];
1242 accetamin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1243 }
1244 if((dphimax > pMax && detamax >= (eMin+2*rc) && detamax <= eMax )||
1245 (dphimax > pMax && detamin <= (eMax-2*rc) && detamin >= eMin )){
1246 Float_t h = pMax - phiJet[k];
1247 accphimax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1248 }
1249 if((dphimin < eMin && detamax >= (eMin+2*rc) && detamax <= eMax )||
1250 (dphimin < eMin && detamin <= (eMax-2*rc) && detamin >= eMin )){
1251 Float_t h = phiJet[k] - pMin;
1252 accphimin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1253 }
1254
1255 if(detamax > eMax && dphimax > pMax ){
1256 Float_t he = eMax - etaJet[k];
1257 Float_t hp = pMax - phiJet[k];
1258 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1259 Float_t alphae = TMath::ACos(he/rc);
1260 Float_t alphap = TMath::ACos(hp/rc);
1261 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1262 if(rlim <= rc){
1263 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1264 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1265 }
1266 if(rlim > rc){
1267 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1268 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1269 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1270 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1271 }
1272 }
1273
1274 if(detamax > eMax && dphimin < pMin ){
1275 Float_t he = eMax - etaJet[k];
1276 Float_t hp = phiJet[k] - pMin;
1277 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1278 Float_t alphae = TMath::ACos(he/rc);
1279 Float_t alphap = TMath::ACos(hp/rc);
1280 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1281 if(rlim <= rc){
1282 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1283 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1284 }
1285 if(rlim > rc){
1286 accetamax = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1287 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1288 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1289 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1290 }
1291 }
1292
1293 if(detamin < eMin && dphimax > pMax ){
1294 Float_t he = eMax + etaJet[k];
1295 Float_t hp = pMax - phiJet[k];
1296 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1297 Float_t alphae = TMath::ACos(he/rc);
1298 Float_t alphap = TMath::ACos(hp/rc);
1299 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1300 if(rlim <= rc){
1301 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1302 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1303 }
1304 if(rlim > rc){
1305 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1306 accphimax = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1307 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1308 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1309 }
1310 }
1311
1312 if(detamin < eMin && dphimin < pMin ){
1313 Float_t he = eMax + etaJet[k];
1314 Float_t hp = phiJet[k] - pMin;
1315 Float_t rlim = TMath::Sqrt(pow(he,2)+pow(hp,2));
1316 Float_t alphae = TMath::ACos(he/rc);
1317 Float_t alphap = TMath::ACos(hp/rc);
1318 Float_t alphad = (alphae+alphap)/2-TMath::Pi()/4;
1319 if(rlim <= rc){
1320 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1321 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp);
1322 }
1323 if(rlim > rc){
1324 accetamin = rc*rc*alphae - he*TMath::Sqrt(rc*rc - he*he);
1325 accphimin = rc*rc*alphap - hp*TMath::Sqrt(rc*rc - hp*hp)-
1326 ((TMath::Sqrt(pow(rc,2)-pow(he,2))-hp)*(TMath::Sqrt(pow(rc,2)-pow(hp,2))-he))/2+
1327 rc*rc*alphad - rc*rc*TMath::Sin(alphad)*TMath::Cos(alphad);
1328 }
1329 }
1330 areaJet[k] = rc*rc*TMath::Pi() - accetamax - accetamin - accphimax - accphimin;
1331 areaOut = areaOut - areaJet[k];
1332 } // end loop on jets
1333
1334 //subtract background using area method
1335 for(Int_t ljet=0; ljet<nJ; ljet++){
1336 Float_t areaRatio = areaJet[ljet]/areaOut;
1337 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
1338 }
1339
1340 // estimate new total background
1341 Float_t areaT = 2*(header->GetLegoEtaMax()*header->GetLegoPhiMax());
1342 etbgTotalN = etOut*areaT/areaOut;
1343 }
1344
1345}
1346
1347////////////////////////////////////////////////////////////////////////
be6e5811 1348void AliUA1JetFinderV2::SubtractBackgC(const Int_t& nIn, const Int_t&nJ, Float_t&etbgTotalN,
c345674e 1349 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT,
1350 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1351 Float_t* const etsigJet,Int_t* const multJet, Int_t* const injet)
8838ab7a 1352{
1353 //background subtraction using cone method but without correction in dE/deta distribution
1354
1355 //calculate energy inside and outside cones
1356 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1357 Float_t rc= header->GetRadius();
1358 Float_t etIn[30];
1359 Float_t etOut = 0;
1360 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1361 // if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut
1362 for(Int_t ijet=0; ijet<nJ; ijet++){
1363 Float_t deta = etaT[jpart] - etaJet[ijet];
1364 Float_t dphi = phiT[jpart] - phiJet[ijet];
1365 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1366 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1367 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1368 if(dr <= rc){ // particles inside this cone
1369 multJet[ijet]++;
1370 injet[jpart] = ijet;
1371 if((fReader->GetCutFlag(jpart)) == 1){ // pt cut
1372 etIn[ijet] += ptT[jpart];
1373 if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet]+= ptT[jpart];
1374 }
1375 break;
1376 }
1377 }// end jets loop
1378 if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1)
1379 etOut += ptT[jpart]; // particle outside cones and pt cut
1380 } //end particle loop
1381
1382 //estimate jets and background areas
1383 Float_t areaJet[30];
1384 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
1385 for(Int_t k=0; k<nJ; k++){
1386 Float_t detamax = etaJet[k] + rc;
1387 Float_t detamin = etaJet[k] - rc;
1388 Float_t accmax = 0.0; Float_t accmin = 0.0;
1389 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
1390 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1391 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1392 }
1393 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
1394 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1395 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
1396 }
1397 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
1398 areaOut = areaOut - areaJet[k];
ee7de0dd 1399 }
1400 //subtract background using area method
1401 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1402 Float_t areaRatio = areaJet[ljet]/areaOut;
1403 etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction
ee7de0dd 1404 }
8838ab7a 1405
ee7de0dd 1406 // estimate new total background
1407 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1408 etbgTotalN = etOut*areaT/areaOut;
8838ab7a 1409
ee7de0dd 1410}
1411
ee7de0dd 1412
8838ab7a 1413////////////////////////////////////////////////////////////////////////
be6e5811 1414void AliUA1JetFinderV2::SubtractBackgStat(const Int_t& nIn, const Int_t&nJ,Float_t&etbgTotalN,
c345674e 1415 const Float_t* ptT, const Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT,
1416 const Int_t* sFlagT, Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1417 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1418{
1419
1420 //background subtraction using statistical method
1421 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1422 Float_t etbgStat = header->GetBackgStat(); // pre-calculated background
8838ab7a 1423
ee7de0dd 1424 //calculate energy inside
1425 Float_t rc= header->GetRadius();
1426 Float_t etIn[30];
8838ab7a 1427
1428 for(Int_t jpart = 0; jpart < nIn; jpart++)
1429 { // loop for all particles in array
1430
1431 for(Int_t ijet=0; ijet<nJ; ijet++)
1432 {
1433 Float_t deta = etaT[jpart] - etaJet[ijet];
1434 Float_t dphi = phiT[jpart] - phiJet[ijet];
1435 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1436 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1437 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1438 if(dr <= rc){ // particles inside this cone
1439 multJet[ijet]++;
1440 injet[jpart] = ijet;
1441 if(cFlagT[jpart] == 1){ // pt cut
1442 etIn[ijet]+= ptT[jpart];
1443 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1444 }
1445 break;
1446 }
1447 }// end jets loop
1448 } //end particle loop
1449
ee7de0dd 1450 //calc jets areas
1451 Float_t areaJet[30];
1452 Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi();
8838ab7a 1453 for(Int_t k=0; k<nJ; k++)
1454 {
ee7de0dd 1455 Float_t detamax = etaJet[k] + rc;
1456 Float_t detamin = etaJet[k] - rc;
1457 Float_t accmax = 0.0; Float_t accmin = 0.0;
1458 if(detamax > header->GetLegoEtaMax()){ // sector outside etamax
8838ab7a 1459 Float_t h = header->GetLegoEtaMax() - etaJet[k];
1460 accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1461 }
1462 if(detamin < header->GetLegoEtaMin()){ // sector outside etamin
8838ab7a 1463 Float_t h = header->GetLegoEtaMax() + etaJet[k];
1464 accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h);
ee7de0dd 1465 }
1466 areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin;
8838ab7a 1467 }
ee7de0dd 1468
1469 //subtract background using area method
1470 for(Int_t ljet=0; ljet<nJ; ljet++){
8838ab7a 1471 Float_t areaRatio = areaJet[ljet]/areaOut;
1472 etJet[ljet] = etIn[ljet]-etbgStat*areaRatio; // subtraction
ee7de0dd 1473 }
8838ab7a 1474
ee7de0dd 1475 etbgTotalN = etbgStat;
ee7de0dd 1476}
1477
1478////////////////////////////////////////////////////////////////////////
c345674e 1479void AliUA1JetFinderV2::SubtractBackgCone(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
1480 Float_t* ptT, Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* sFlagT,
1481 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1482 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1483{
8838ab7a 1484 // Cone background subtraction method taking into acount dEt/deta distribution
1485 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1486 //general
1487 Float_t rc= header->GetRadius();
1488 Float_t etamax = header->GetLegoEtaMax();
1489 Float_t etamin = header->GetLegoEtaMin();
1490 Int_t ndiv = 100;
1491
1492 // jet energy and area arrays
1493 TH1F* hEtJet[30];
1494 TH1F* hAreaJet[30];
1495 for(Int_t mjet=0; mjet<nJ; mjet++){
1496 char hEtname[256]; char hAreaname[256];
1497 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1498 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax);
1499 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax);
ee7de0dd 1500 }
8838ab7a 1501 // background energy and area
1502 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax);
1503 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax);
1504
1505 //fill energies
1506 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1507 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1508 Float_t deta = etaT[jpart] - etaJet[ijet];
1509 Float_t dphi = phiT[jpart] - phiJet[ijet];
1510 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1511 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1512 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1513 if(dr <= rc){ // particles inside this cone
1514 injet[jpart] = ijet;
1515 multJet[ijet]++;
1516 if(cFlagT[jpart] == 1){// pt cut
1517 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone
1518 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1519 }
1520 break;
1521 }
1522 }// end jets loop
1523
1524 if(injet[jpart] == -1 && cFlagT[jpart] == 1)
1525 hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1526 } //end particle loop
1527
8838ab7a 1528 //calc areas
1529 Float_t eta0 = etamin;
1530 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1531 Float_t eta1 = eta0 + etaw;
1532 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1533 Float_t etac = eta0 + etaw/2.0;
1534 Float_t areabg = etaw*2.0*TMath::Pi();
1535 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1536 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1537 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1538 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1539 Float_t areaj = 0.0;
1540 if(deta0 > rc && deta1 < rc){
1541 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1542 areaj = acc1;
1543 }
1544 if(deta0 < rc && deta1 > rc){
1545 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1546 areaj = acc0;
1547 }
1548 if(deta0 < rc && deta1 < rc){
1549 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1550 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1551 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1552 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1553 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1554 }
1555 hAreaJet[ijet]->Fill(etac,areaj);
1556 areabg = areabg - areaj;
1557 } // end jets loop
1558 hAreaBackg->Fill(etac,areabg);
1559 eta0 = eta1;
1560 eta1 = eta1 + etaw;
1561 } // end loop for all eta bins
1562
1563 //subtract background
1564 for(Int_t kjet=0; kjet<nJ; kjet++){
1565 etJet[kjet] = 0.0; // first clear etJet for this jet
1566 for(Int_t bin = 0; bin< ndiv; bin++){
1567 if(hAreaJet[kjet]->GetBinContent(bin)){
1568 Float_t areab = hAreaBackg->GetBinContent(bin);
1569 Float_t etb = hEtBackg->GetBinContent(bin);
1570 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1571 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR); //subtraction
1572 }
1573 }
1574 }
ee7de0dd 1575
8838ab7a 1576 // calc background total
1577 Double_t etOut = hEtBackg->Integral();
1578 Double_t areaOut = hAreaBackg->Integral();
1579 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1580 etbgTotalN = etOut*areaT/areaOut;
1581
1582 //delete
1583 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1584 delete hEtJet[ljet];
1585 delete hAreaJet[ljet];
1586 }
ee7de0dd 1587
8838ab7a 1588 delete hEtBackg;
1589 delete hAreaBackg;
1590}
ee7de0dd 1591
8838ab7a 1592////////////////////////////////////////////////////////////////////////
be6e5811 1593void AliUA1JetFinderV2::SubtractBackgRatio(const Int_t& nIn, const Int_t&nJ,Float_t& etbgTotalN,
c345674e 1594 Float_t* ptT, Float_t* etaT, const Float_t* phiT, const Int_t* cFlagT, const Int_t* sFlagT,
1595 Float_t* const etJet, const Float_t* etaJet, const Float_t* phiJet,
1596 Float_t* const etsigJet, Int_t* const multJet, Int_t* const injet)
ee7de0dd 1597{
8838ab7a 1598 // Ratio background subtraction method taking into acount dEt/deta distribution
1599 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1600 //factor F calc before
1601 Float_t bgRatioCut = header->GetBackgCutRatio();
1602
1603 //general
1604 Float_t rc= header->GetRadius();
1605 Float_t etamax = header->GetLegoEtaMax();
1606 Float_t etamin = header->GetLegoEtaMin();
1607 Int_t ndiv = 100;
1608
1609 // jet energy and area arrays
1610 TH1F* hEtJet[30];
1611 TH1F* hAreaJet[30];
1612 for(Int_t mjet=0; mjet<nJ; mjet++){
1613 char hEtname[256]; char hAreaname[256];
1614 sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet);
1615 hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); // change range
1616 hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); // change range
ee7de0dd 1617 }
8838ab7a 1618 // background energy and area
1619 TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); // change range
1620 TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); // change range
1621
1622 //fill energies
1623 for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array
1624 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1625 Float_t deta = etaT[jpart] - etaJet[ijet];
1626 Float_t dphi = phiT[jpart] - phiJet[ijet];
1627 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
1628 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
1629 Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
1630 if(dr <= rc){ // particles inside this cone
1631 multJet[ijet]++;
1632 injet[jpart] = ijet;
1633 if(cFlagT[jpart] == 1){ //pt cut
1634 hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone and pt cut
1635 if(sFlagT[jpart] == 1) etsigJet[ijet] += ptT[jpart];
1636 }
1637 break;
1638 }
1639 }// end jets loop
1640 if(injet[jpart] == -1) hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones
ee7de0dd 1641 } //end particle loop
1642
8838ab7a 1643 //calc areas
1644 Float_t eta0 = etamin;
1645 Float_t etaw = (etamax - etamin)/((Float_t)ndiv);
1646 Float_t eta1 = eta0 + etaw;
1647 for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins
1648 Float_t etac = eta0 + etaw/2.0;
1649 Float_t areabg = etaw*2.0*TMath::Pi();
1650 for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets
1651 Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]);
1652 Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]);
1653 Float_t acc0 = 0.0; Float_t acc1 = 0.0;
1654 Float_t areaj = 0.0;
1655 if(deta0 > rc && deta1 < rc){
1656 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1657 areaj = acc1;
1658 }
1659 if(deta0 < rc && deta1 > rc){
1660 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1661 areaj = acc0;
1662 }
1663 if(deta0 < rc && deta1 < rc){
1664 acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0);
1665 acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1);
1666 if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1
1667 if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2
1668 if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3
1669 }
1670 hAreaJet[ijet]->Fill(etac,areaj);
1671 areabg = areabg - areaj;
1672 } // end jets loop
1673 hAreaBackg->Fill(etac,areabg);
1674 eta0 = eta1;
1675 eta1 = eta1 + etaw;
1676 } // end loop for all eta bins
1677
1678 //subtract background
1679 for(Int_t kjet=0; kjet<nJ; kjet++){
1680 etJet[kjet] = 0.0; // first clear etJet for this jet
1681 for(Int_t bin = 0; bin< ndiv; bin++){
1682 if(hAreaJet[kjet]->GetBinContent(bin)){
1683 Float_t areab = hAreaBackg->GetBinContent(bin);
1684 Float_t etb = hEtBackg->GetBinContent(bin);
1685 Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab;
1686 etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR*bgRatioCut); //subtraction
1687 }
1688 }
1689 }
1690
1691 // calc background total
1692 Double_t etOut = hEtBackg->Integral();
1693 Double_t areaOut = hAreaBackg->Integral();
1694 Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi();
1695 etbgTotalN = etOut*areaT/areaOut;
1696
1697 //delete
1698 for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets
1699 delete hEtJet[ljet];
1700 delete hAreaJet[ljet];
1701 }
1702
1703 delete hEtBackg;
1704 delete hAreaBackg;
ee7de0dd 1705}
1706
1707////////////////////////////////////////////////////////////////////////
ee7de0dd 1708void AliUA1JetFinderV2::Reset()
1709{
1710 fLego->Reset();
ee7de0dd 1711 AliJetFinder::Reset();
1712}
1713
1714////////////////////////////////////////////////////////////////////////
446dbc09 1715void AliUA1JetFinderV2::WriteJHeaderToFile() const
ee7de0dd 1716{
1717 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
1718 header->Write();
1719}
1720
1721////////////////////////////////////////////////////////////////////////
8838ab7a 1722void AliUA1JetFinderV2::InitTask(TChain* tree)
ee7de0dd 1723{
8838ab7a 1724
ee7de0dd 1725 // initializes some variables
1726 AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader;
8838ab7a 1727 // book lego
1728 fLego = new TH2F("legoH","eta-phi",
1729 header->GetLegoNbinEta(), header->GetLegoEtaMin(),
1730 header->GetLegoEtaMax(), header->GetLegoNbinPhi(),
1731 header->GetLegoPhiMin(), header->GetLegoPhiMax());
1732
cc6a2227 1733 fDebug = fHeader->GetDebug();
ee7de0dd 1734 fOpt = fReader->GetReaderHeader()->GetDetector();
8838ab7a 1735
1736 // Tasks initialization
ee7de0dd 1737 if(fOpt>0)
8838ab7a 1738 fReader->CreateTasks(tree);
ee7de0dd 1739
1740}