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