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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 | //--------------------------------------------------------------------- | |
19 | // UA1 Cone Algorithm Jet finder | |
20 | // manages the search for jets | |
21 | // Author: Rafael.Diaz.Valdes@cern.ch | |
22 | // (version in c++) | |
23 | // Modified to include neutral particles (magali.estienne@ires.in2p3.fr) | |
24 | //--------------------------------------------------------------------- | |
25 | ||
26 | #include <Riostream.h> | |
27 | ||
28 | #include <TArrayF.h> | |
29 | #include <TClonesArray.h> | |
30 | #include <TFile.h> | |
31 | #include <TH1F.h> | |
32 | #include <TH2F.h> | |
33 | #include <TLorentzVector.h> | |
34 | #include <TMath.h> | |
35 | #include <TRefArray.h> | |
36 | ||
37 | #include "AliUA1JetFinderV2.h" | |
38 | #include "AliUA1JetHeaderV1.h" | |
39 | #include "AliJetUnitArray.h" | |
40 | #include "AliJetReaderHeader.h" | |
41 | #include "AliJetReader.h" | |
42 | #include "AliJet.h" | |
43 | #include "AliAODJet.h" | |
44 | ||
45 | ||
46 | ClassImp(AliUA1JetFinderV2) | |
47 | ||
48 | //////////////////////////////////////////////////////////////////////// | |
49 | ||
50 | AliUA1JetFinderV2::AliUA1JetFinderV2(): | |
51 | fDebug(0), | |
52 | fOpt(0) | |
53 | { | |
54 | // Constructor | |
55 | fHeader = 0x0; | |
56 | fLego = 0x0; | |
57 | } | |
58 | ||
59 | //////////////////////////////////////////////////////////////////////// | |
60 | ||
61 | AliUA1JetFinderV2::~AliUA1JetFinderV2() | |
62 | ||
63 | { | |
64 | // destructor | |
65 | } | |
66 | ||
67 | //////////////////////////////////////////////////////////////////////// | |
68 | ||
69 | ||
70 | void AliUA1JetFinderV2::FindJets() | |
71 | ||
72 | { | |
73 | //1) Fill cell map array | |
74 | //2) calculate total energy and fluctuation level | |
75 | //3) Run algorithm | |
76 | // 3.1) look centroides in cell map | |
77 | // 3.2) calculate total energy in cones | |
78 | // 3.3) flag as a possible jet | |
79 | // 3.4) reorder cones by energy | |
80 | //4) subtract backg in accepted jets | |
81 | //5) fill AliJet list | |
82 | ||
83 | // transform input to pt,eta,phi plus lego | |
84 | ||
85 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
86 | TClonesArray* fUnit = fReader->GetUnitArray(); | |
87 | Int_t nCandidate = fReader->GetNumCandidate(); | |
88 | Int_t nIn = fUnit->GetEntries(); | |
89 | ||
90 | if (nIn == 0) return; | |
91 | ||
92 | // local arrays for input No Cuts | |
93 | // Both pt < ptMin and pt > ptMin | |
94 | Float_t* enT = new Float_t[nCandidate]; | |
95 | Float_t* ptT = new Float_t[nCandidate]; | |
96 | Float_t* etaT = new Float_t[nCandidate]; | |
97 | Float_t* phiT = new Float_t[nCandidate]; | |
98 | Float_t* detaT = new Float_t[nCandidate]; | |
99 | Float_t* dphiT = new Float_t[nCandidate]; | |
100 | Float_t* cFlagT = new Float_t[nCandidate]; | |
101 | Float_t* cClusterT = new Float_t[nCandidate]; | |
102 | Float_t* idT = new Float_t[nCandidate]; | |
103 | Int_t loop1 = 0; | |
104 | Int_t* injet = new Int_t[nCandidate]; | |
105 | Int_t* sflag = new Int_t[nCandidate]; | |
106 | ||
107 | ||
108 | //total energy in array | |
109 | Float_t etbgTotal = 0.0; | |
110 | TH1F* hPtTotal = new TH1F("hPt","Pt distribution of all particles ",100,0.0,15.0); | |
111 | ||
112 | // Input cell info | |
113 | Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray | |
114 | Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray | |
115 | Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray | |
116 | Int_t *flagCell = new Int_t[nIn]; //! Cell phi - Extracted from UnitArray | |
117 | ||
118 | // Information extracted from fUnitArray | |
119 | // load input vectors and calculate total energy in array | |
120 | for(Int_t i=0; i<nIn; i++) | |
121 | { | |
122 | AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i); | |
123 | if(uArray->GetUnitCutFlag()==1){ | |
124 | etCell[i] = uArray->GetUnitEnergy(); | |
125 | if (etCell[i] > 0.0) etCell[i] -= header->GetMinCellEt(); | |
126 | if (etCell[i] < 0.0) etCell[i] = 0.; | |
127 | etaCell[i] = uArray->GetUnitEta(); | |
128 | phiCell[i] = uArray->GetUnitPhi(); | |
129 | flagCell[i] = 0; // default | |
130 | } | |
131 | else { | |
132 | etCell[i] = 0.; | |
133 | etaCell[i] = uArray->GetUnitEta(); | |
134 | phiCell[i] = uArray->GetUnitPhi(); | |
135 | flagCell[i] = 0; | |
136 | } | |
137 | ||
138 | if(uArray->GetUnitEnergy()>0.){ | |
139 | ptT[loop1] = uArray->GetUnitEnergy(); | |
140 | enT[loop1] = uArray->GetUnitEnergy(); | |
141 | etaT[loop1] = uArray->GetUnitEta(); | |
142 | phiT[loop1] = uArray->GetUnitPhi(); | |
143 | detaT[loop1] = uArray->GetUnitDeta(); | |
144 | dphiT[loop1] = uArray->GetUnitDphi(); | |
145 | cFlagT[loop1]= uArray->GetUnitCutFlag(); | |
146 | idT[loop1] = uArray->GetUnitID(); | |
147 | if(cFlagT[loop1] == 1) { | |
148 | hPtTotal->Fill(ptT[loop1]); | |
149 | // fLego->Fill(etaT[i], phiT[i], ptT[i]); | |
150 | etbgTotal+= ptT[loop1]; | |
151 | } | |
152 | loop1++; | |
153 | } | |
154 | } | |
155 | ||
156 | // fJets->SetNinput(nIn); | |
157 | fJets->SetNinput(nCandidate); | |
158 | ||
159 | // calculate total energy and fluctuation in map | |
160 | Double_t meanpt = hPtTotal->GetMean(); | |
161 | Double_t ptRMS = hPtTotal->GetRMS(); | |
162 | Double_t npart = hPtTotal->GetEntries(); | |
163 | Double_t dEtTotal = (TMath::Sqrt(npart))*TMath::Sqrt(meanpt * meanpt + ptRMS*ptRMS); | |
164 | ||
165 | // arrays to hold jets | |
166 | Float_t* etaJet = new Float_t[30]; | |
167 | Float_t* phiJet = new Float_t[30]; | |
168 | Float_t* etJet = new Float_t[30]; | |
169 | Float_t* etsigJet = new Float_t[30]; //signal et in jet | |
170 | Float_t* etallJet = new Float_t[30]; // total et in jet (tmp variable) | |
171 | Int_t* ncellsJet = new Int_t[30]; | |
172 | Int_t* multJet = new Int_t[30]; | |
173 | Int_t nJets; // to hold number of jets found by algorithm | |
174 | Int_t nj; // number of jets accepted | |
175 | Float_t prec = header->GetPrecBg(); | |
176 | Float_t bgprec = 1; | |
177 | while(bgprec > prec){ | |
178 | //reset jet arrays in memory | |
179 | memset(etaJet,0,sizeof(Float_t)*30); | |
180 | memset(phiJet,0,sizeof(Float_t)*30); | |
181 | memset(etJet,0,sizeof(Float_t)*30); | |
182 | memset(etallJet,0,sizeof(Float_t)*30); | |
183 | memset(etsigJet,0,sizeof(Float_t)*30); | |
184 | memset(ncellsJet,0,sizeof(Int_t)*30); | |
185 | memset(multJet,0,sizeof(Int_t)*30); | |
186 | nJets = 0; | |
187 | nj = 0; | |
188 | // reset particles-jet array in memory | |
189 | memset(injet,-1,sizeof(Int_t)*nCandidate); | |
190 | //run cone algorithm finder | |
191 | RunAlgoritm(nIn,etCell,etaCell,phiCell,flagCell,etbgTotal,dEtTotal,nJets,etJet,etaJet,phiJet,etallJet,ncellsJet); | |
192 | //run background subtraction | |
193 | if(nJets > header->GetNAcceptJets()) // limited number of accepted jets per event | |
194 | nj = header->GetNAcceptJets(); | |
195 | else | |
196 | nj = nJets; | |
197 | //subtract background | |
198 | Float_t etbgTotalN = 0.0; //new background | |
199 | if(header->GetBackgMode() == 1) // standar | |
200 | SubtractBackg(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet); | |
201 | if(header->GetBackgMode() == 2) //cone | |
202 | SubtractBackgCone(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet); | |
203 | if(header->GetBackgMode() == 3) //ratio | |
204 | SubtractBackgRatio(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet); | |
205 | if(header->GetBackgMode() == 4) //statistic | |
206 | SubtractBackgStat(nCandidate,nj,etbgTotalN,ptT,etaT,phiT,etJet,etaJet,phiJet,etsigJet,multJet,injet); | |
207 | //calc precision | |
208 | if(etbgTotalN != 0.0) | |
209 | bgprec = (etbgTotal - etbgTotalN)/etbgTotalN; | |
210 | else | |
211 | bgprec = 0; | |
212 | etbgTotal = etbgTotalN; // update with new background estimation | |
213 | } //end while | |
214 | ||
215 | // add jets to list | |
216 | Int_t* idxjets = new Int_t[nj]; | |
217 | Int_t nselectj = 0; | |
218 | printf("Found %d jets \n", nj); | |
219 | ||
220 | for(Int_t kj=0; kj<nj; kj++){ | |
221 | if ((etaJet[kj] > (header->GetJetEtaMax())) || | |
222 | (etaJet[kj] < (header->GetJetEtaMin())) || | |
223 | (etJet[kj] < header->GetMinJetEt())) continue; // acceptance eta range and etmin | |
224 | Float_t px, py,pz,en; // convert to 4-vector | |
225 | px = etJet[kj] * TMath::Cos(phiJet[kj]); | |
226 | py = etJet[kj] * TMath::Sin(phiJet[kj]); | |
227 | pz = etJet[kj] / TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-etaJet[kj]))); | |
228 | en = TMath::Sqrt(px * px + py * py + pz * pz); | |
229 | fJets->AddJet(px, py, pz, en); | |
230 | AliAODJet jet(px, py, pz, en); | |
231 | jet.Print(""); | |
232 | ||
233 | AddJet(jet); | |
234 | ||
235 | idxjets[nselectj] = kj; | |
236 | nselectj++; | |
237 | } | |
238 | //add signal percentage and total signal in AliJets for analysis tool | |
239 | Float_t* percentage = new Float_t[nselectj]; | |
240 | Int_t* ncells = new Int_t[nselectj]; | |
241 | Int_t* mult = new Int_t[nselectj]; | |
242 | for(Int_t i = 0; i< nselectj; i++){ | |
243 | percentage[i] = etsigJet[idxjets[i]]/etJet[idxjets[i]]; | |
244 | ncells[i] = ncellsJet[idxjets[i]]; | |
245 | mult[i] = multJet[idxjets[i]]; | |
246 | } | |
247 | //add particle-injet relationship /// | |
248 | // for(Int_t bj = 0; bj < nIn; bj++){ | |
249 | for(Int_t bj = 0; bj < nCandidate; bj++){ | |
250 | if(injet[bj] == -1) continue; //background particle | |
251 | Int_t bflag = 0; | |
252 | for(Int_t ci = 0; ci< nselectj; ci++){ | |
253 | if(injet[bj] == idxjets[ci]){ | |
254 | injet[bj]= ci; | |
255 | bflag++; | |
256 | break; | |
257 | } | |
258 | } | |
259 | if(bflag == 0) injet[bj] = -1; // set as background particle | |
260 | } | |
261 | fJets->SetNCells(ncells); | |
262 | fJets->SetPtFromSignal(percentage); | |
263 | fJets->SetMultiplicities(mult); | |
264 | fJets->SetInJet(injet); | |
265 | fJets->SetEtaIn(etaT); | |
266 | fJets->SetPhiIn(phiT); | |
267 | fJets->SetPtIn(ptT); | |
268 | fJets->SetEtAvg(etbgTotal/(4*(header->GetLegoEtaMax())*TMath::Pi())); | |
269 | ||
270 | ||
271 | //delete | |
272 | delete enT; | |
273 | delete ptT; | |
274 | delete etaT; | |
275 | delete phiT; | |
276 | delete detaT; | |
277 | delete dphiT; | |
278 | delete cFlagT; | |
279 | delete cClusterT; | |
280 | delete idT; | |
281 | delete injet; | |
282 | delete sflag; | |
283 | delete hPtTotal; | |
284 | delete etCell; | |
285 | delete etaCell; | |
286 | delete phiCell; | |
287 | delete flagCell; | |
288 | delete etaJet; | |
289 | delete phiJet; | |
290 | delete etJet; | |
291 | delete etsigJet; | |
292 | delete etallJet; | |
293 | delete ncellsJet; | |
294 | delete multJet; | |
295 | delete idxjets; | |
296 | delete percentage; | |
297 | delete ncells; | |
298 | delete mult; | |
299 | ||
300 | ||
301 | } | |
302 | ||
303 | //////////////////////////////////////////////////////////////////////// | |
304 | ||
305 | void AliUA1JetFinderV2::RunAlgoritm(Int_t nIn, Float_t* etCell, Float_t* etaCell, Float_t* phiCell, | |
306 | Int_t* flagCell, Float_t etbgTotal, Double_t dEtTotal, | |
307 | Int_t& nJets, Float_t* etJet,Float_t* etaJet, Float_t* phiJet, | |
308 | Float_t* etallJet, Int_t* ncellsJet) | |
309 | { | |
310 | ||
311 | Int_t nCell = nIn; | |
312 | ||
313 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
314 | ||
315 | // Parameters from header | |
316 | Float_t minmove = header->GetMinMove(); | |
317 | Float_t maxmove = header->GetMaxMove(); | |
318 | Float_t rc = header->GetRadius(); | |
319 | Float_t etseed = header->GetEtSeed(); | |
320 | ||
321 | // tmp array of jets form algoritm | |
322 | Float_t etaAlgoJet[30]; | |
323 | Float_t phiAlgoJet[30]; | |
324 | Float_t etAlgoJet[30]; | |
325 | Int_t ncellsAlgoJet[30]; | |
326 | ||
327 | //run algorithm// | |
328 | ||
329 | // sort cells by et | |
330 | Int_t * index = new Int_t[nCell]; | |
331 | TMath::Sort(nCell, etCell, index); | |
332 | ||
333 | // variable used in centroide loop | |
334 | Float_t eta = 0.0; | |
335 | Float_t phi = 0.0; | |
336 | Float_t eta0 = 0.0; | |
337 | Float_t phi0 = 0.0; | |
338 | Float_t etab = 0.0; | |
339 | Float_t phib = 0.0; | |
340 | Float_t etas = 0.0; | |
341 | Float_t phis = 0.0; | |
342 | Float_t ets = 0.0; | |
343 | Float_t deta = 0.0; | |
344 | Float_t dphi = 0.0; | |
345 | Float_t dr = 0.0; | |
346 | Float_t etsb = 0.0; | |
347 | Float_t etasb = 0.0; | |
348 | Float_t phisb = 0.0; | |
349 | ||
350 | ||
351 | for(Int_t icell = 0; icell < nCell; icell++){ | |
352 | Int_t jcell = index[icell]; | |
353 | if(etCell[jcell] <= etseed) continue; // if cell energy is low et seed | |
354 | if(flagCell[jcell] != 0) continue; // if cell was used before | |
355 | eta = etaCell[jcell]; | |
356 | phi = phiCell[jcell]; | |
357 | eta0 = eta; | |
358 | phi0 = phi; | |
359 | etab = eta; | |
360 | phib = phi; | |
361 | ets = etCell[jcell]; | |
362 | etas = 0.0; | |
363 | phis = 0.0; | |
364 | etsb = ets; | |
365 | etasb = 0.0; | |
366 | phisb = 0.0; | |
367 | for(Int_t kcell =0; kcell < nCell; kcell++){ | |
368 | Int_t lcell = index[kcell]; | |
369 | if(lcell == jcell) continue; // cell itself | |
370 | if(flagCell[lcell] != 0) continue; // cell used before | |
371 | if(etCell[lcell] > etCell[jcell]) continue; | |
372 | //calculate dr | |
373 | deta = etaCell[lcell] - eta; | |
374 | dphi = phiCell[lcell] - phi; | |
375 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
376 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
377 | dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
378 | if(dr <= rc){ | |
379 | // calculate offset from initiate cell | |
380 | deta = etaCell[lcell] - eta0; | |
381 | dphi = phiCell[lcell] - phi0; | |
382 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
383 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
384 | etas = etas + etCell[lcell]*deta; | |
385 | phis = phis + etCell[lcell]*dphi; | |
386 | ets = ets + etCell[lcell]; | |
387 | //new weighted eta and phi including this cell | |
388 | eta = eta0 + etas/ets; | |
389 | phi = phi0 + phis/ets; | |
390 | // if cone does not move much, just go to next step | |
391 | dr = TMath::Sqrt((eta-etab)*(eta-etab) + (phi-phib)*(phi-phib)); | |
392 | if(dr <= minmove) break; | |
393 | // cone should not move more than max_mov | |
394 | dr = TMath::Sqrt((etas/ets)*(etas/ets) + (phis/ets)*(phis/ets)); | |
395 | if(dr > maxmove){ | |
396 | eta = etab; | |
397 | phi = phib; | |
398 | ets = etsb; | |
399 | etas = etasb; | |
400 | phis = phisb; | |
401 | }else{ // store this loop information | |
402 | etab=eta; | |
403 | phib=phi; | |
404 | etsb = ets; | |
405 | etasb = etas; | |
406 | phisb = phis; | |
407 | } | |
408 | } | |
409 | }//end of cells loop looking centroide | |
410 | ||
411 | //avoid cones overloap (to be implemented in the future) | |
412 | ||
413 | //flag cells in Rc, estimate total energy in cone | |
414 | Float_t etCone = 0.0; | |
415 | Int_t nCellIn = 0; | |
416 | rc = header->GetRadius(); | |
417 | for(Int_t ncell =0; ncell < nCell; ncell++){ | |
418 | if(flagCell[ncell] != 0) continue; // cell used before | |
419 | //calculate dr | |
420 | deta = etaCell[ncell] - eta; | |
421 | dphi = phiCell[ncell] - phi; | |
422 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
423 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
424 | dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
425 | if(dr <= rc){ // cell in cone | |
426 | flagCell[ncell] = -1; | |
427 | etCone+=etCell[ncell]; | |
428 | nCellIn++; | |
429 | } | |
430 | } | |
431 | ||
432 | // select jets with et > background | |
433 | // estimate max fluctuation of background in cone | |
434 | Double_t ncellin = (Double_t)nCellIn; | |
435 | Double_t ntcell = (Double_t)nCell; | |
436 | Double_t etbmax = (etbgTotal + dEtTotal )*(ncellin/ntcell); | |
437 | // min cone et | |
438 | Double_t etcmin = etCone ; // could be used etCone - etmin !! | |
439 | //desicions !! etbmax < etcmin | |
440 | for(Int_t mcell =0; mcell < nCell; mcell++){ | |
441 | if(flagCell[mcell] == -1){ | |
442 | if(etbmax < etcmin) | |
443 | flagCell[mcell] = 1; //flag cell as used | |
444 | else | |
445 | flagCell[mcell] = 0; // leave it free | |
446 | } | |
447 | } | |
448 | //store tmp jet info !!! | |
449 | if(etbmax < etcmin) { | |
450 | etaAlgoJet[nJets] = eta; | |
451 | phiAlgoJet[nJets] = phi; | |
452 | etAlgoJet[nJets] = etCone; | |
453 | ncellsAlgoJet[nJets] = nCellIn; | |
454 | nJets++; | |
455 | } | |
456 | ||
457 | } // end of cells loop | |
458 | ||
459 | //reorder jets by et in cone | |
460 | //sort jets by energy | |
461 | Int_t * idx = new Int_t[nJets]; | |
462 | TMath::Sort(nJets, etAlgoJet, idx); | |
463 | for(Int_t p = 0; p < nJets; p++){ | |
464 | etaJet[p] = etaAlgoJet[idx[p]]; | |
465 | phiJet[p] = phiAlgoJet[idx[p]]; | |
466 | etJet[p] = etAlgoJet[idx[p]]; | |
467 | etallJet[p] = etAlgoJet[idx[p]]; | |
468 | ncellsJet[p] = ncellsAlgoJet[idx[p]]; | |
469 | } | |
470 | ||
471 | ||
472 | //delete | |
473 | delete index; | |
474 | delete idx; | |
475 | ||
476 | } | |
477 | //////////////////////////////////////////////////////////////////////// | |
478 | ||
479 | void AliUA1JetFinderV2::SubtractBackg(Int_t& nIn, Int_t&nJ, Float_t&etbgTotalN, | |
480 | Float_t* ptT, Float_t* etaT, Float_t* phiT, | |
481 | Float_t* etJet,Float_t* etaJet, Float_t* phiJet, Float_t* etsigJet, | |
482 | Int_t* multJet, Int_t* injet) | |
483 | { | |
484 | //background subtraction using cone method but without correction in dE/deta distribution | |
485 | ||
486 | //calculate energy inside and outside cones | |
487 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
488 | Float_t rc= header->GetRadius(); | |
489 | Float_t etIn[30]; | |
490 | Float_t etOut = 0; | |
491 | for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array | |
492 | // if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut | |
493 | for(Int_t ijet=0; ijet<nJ; ijet++){ | |
494 | Float_t deta = etaT[jpart] - etaJet[ijet]; | |
495 | Float_t dphi = phiT[jpart] - phiJet[ijet]; | |
496 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
497 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
498 | Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
499 | if(dr <= rc){ // particles inside this cone | |
500 | multJet[ijet]++; | |
501 | injet[jpart] = ijet; | |
502 | if((fReader->GetCutFlag(jpart)) == 1){ // pt cut | |
503 | etIn[ijet] += ptT[jpart]; | |
504 | if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet]+= ptT[jpart]; | |
505 | } | |
506 | break; | |
507 | } | |
508 | }// end jets loop | |
509 | if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1) | |
510 | etOut += ptT[jpart]; // particle outside cones and pt cut | |
511 | } //end particle loop | |
512 | ||
513 | //estimate jets and background areas | |
514 | Float_t areaJet[30]; | |
515 | Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi(); | |
516 | for(Int_t k=0; k<nJ; k++){ | |
517 | Float_t detamax = etaJet[k] + rc; | |
518 | Float_t detamin = etaJet[k] - rc; | |
519 | Float_t accmax = 0.0; Float_t accmin = 0.0; | |
520 | if(detamax > header->GetLegoEtaMax()){ // sector outside etamax | |
521 | Float_t h = header->GetLegoEtaMax() - etaJet[k]; | |
522 | accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h); | |
523 | } | |
524 | if(detamin < header->GetLegoEtaMin()){ // sector outside etamin | |
525 | Float_t h = header->GetLegoEtaMax() + etaJet[k]; | |
526 | accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h); | |
527 | } | |
528 | areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin; | |
529 | areaOut = areaOut - areaJet[k]; | |
530 | } | |
531 | //subtract background using area method | |
532 | for(Int_t ljet=0; ljet<nJ; ljet++){ | |
533 | Float_t areaRatio = areaJet[ljet]/areaOut; | |
534 | etJet[ljet] = etIn[ljet]-etOut*areaRatio; // subtraction | |
535 | } | |
536 | ||
537 | // estimate new total background | |
538 | Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi(); | |
539 | etbgTotalN = etOut*areaT/areaOut; | |
540 | ||
541 | ||
542 | } | |
543 | ||
544 | //////////////////////////////////////////////////////////////////////// | |
545 | ||
546 | void AliUA1JetFinderV2::SubtractBackgStat(Int_t& nIn, Int_t&nJ,Float_t&etbgTotalN, | |
547 | Float_t* ptT, Float_t* etaT, Float_t* phiT, | |
548 | Float_t* etJet,Float_t* etaJet, Float_t* phiJet, Float_t* etsigJet, | |
549 | Int_t* multJet, Int_t* injet) | |
550 | { | |
551 | ||
552 | //background subtraction using statistical method | |
553 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
554 | Float_t etbgStat = header->GetBackgStat(); // pre-calculated background | |
555 | ||
556 | //calculate energy inside | |
557 | Float_t rc= header->GetRadius(); | |
558 | Float_t etIn[30]; | |
559 | ||
560 | for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array | |
561 | //if((fReader->GetCutFlag(jpart)) != 1) continue; // pt cut | |
562 | for(Int_t ijet=0; ijet<nJ; ijet++){ | |
563 | Float_t deta = etaT[jpart] - etaJet[ijet]; | |
564 | Float_t dphi = phiT[jpart] - phiJet[ijet]; | |
565 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
566 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
567 | Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
568 | if(dr <= rc){ // particles inside this cone | |
569 | multJet[ijet]++; | |
570 | injet[jpart] = ijet; | |
571 | if((fReader->GetCutFlag(jpart)) == 1){ // pt cut | |
572 | etIn[ijet]+= ptT[jpart]; | |
573 | if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet] += ptT[jpart]; | |
574 | } | |
575 | break; | |
576 | } | |
577 | }// end jets loop | |
578 | } //end particle loop | |
579 | ||
580 | //calc jets areas | |
581 | Float_t areaJet[30]; | |
582 | Float_t areaOut = 4*(header->GetLegoEtaMax())*TMath::Pi(); | |
583 | for(Int_t k=0; k<nJ; k++){ | |
584 | Float_t detamax = etaJet[k] + rc; | |
585 | Float_t detamin = etaJet[k] - rc; | |
586 | Float_t accmax = 0.0; Float_t accmin = 0.0; | |
587 | if(detamax > header->GetLegoEtaMax()){ // sector outside etamax | |
588 | Float_t h = header->GetLegoEtaMax() - etaJet[k]; | |
589 | accmax = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h); | |
590 | } | |
591 | if(detamin < header->GetLegoEtaMin()){ // sector outside etamin | |
592 | Float_t h = header->GetLegoEtaMax() + etaJet[k]; | |
593 | accmin = rc*rc*TMath::ACos(h/rc) - h*TMath::Sqrt(rc*rc - h*h); | |
594 | } | |
595 | areaJet[k] = rc*rc*TMath::Pi() - accmax - accmin; | |
596 | } | |
597 | ||
598 | //subtract background using area method | |
599 | for(Int_t ljet=0; ljet<nJ; ljet++){ | |
600 | Float_t areaRatio = areaJet[ljet]/areaOut; | |
601 | etJet[ljet] = etIn[ljet]-etbgStat*areaRatio; // subtraction | |
602 | } | |
603 | ||
604 | etbgTotalN = etbgStat; | |
605 | ||
606 | } | |
607 | ||
608 | //////////////////////////////////////////////////////////////////////// | |
609 | ||
610 | void AliUA1JetFinderV2::SubtractBackgCone(Int_t& nIn, Int_t&nJ,Float_t& etbgTotalN, | |
611 | Float_t* ptT, Float_t* etaT, Float_t* phiT, | |
612 | Float_t* etJet,Float_t* etaJet, Float_t* phiJet, Float_t* etsigJet, | |
613 | Int_t* multJet, Int_t* injet) | |
614 | { | |
615 | // Cone background subtraction method taking into acount dEt/deta distribution | |
616 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
617 | //general | |
618 | Float_t rc= header->GetRadius(); | |
619 | Float_t etamax = header->GetLegoEtaMax(); | |
620 | Float_t etamin = header->GetLegoEtaMin(); | |
621 | Int_t ndiv = 100; | |
622 | ||
623 | // jet energy and area arrays | |
624 | TH1F* hEtJet[30]; | |
625 | TH1F* hAreaJet[30]; | |
626 | for(Int_t mjet=0; mjet<nJ; mjet++){ | |
627 | char hEtname[256]; char hAreaname[256]; | |
628 | sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet); | |
629 | hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); | |
630 | hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); | |
631 | } | |
632 | // background energy and area | |
633 | TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); | |
634 | TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); | |
635 | ||
636 | //fill energies | |
637 | for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array | |
638 | for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets | |
639 | Float_t deta = etaT[jpart] - etaJet[ijet]; | |
640 | Float_t dphi = phiT[jpart] - phiJet[ijet]; | |
641 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
642 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
643 | Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
644 | if(dr <= rc){ // particles inside this cone | |
645 | injet[jpart] = ijet; | |
646 | multJet[ijet]++; | |
647 | if((fReader->GetCutFlag(jpart)) == 1){// pt cut | |
648 | hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone | |
649 | if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet] += ptT[jpart]; | |
650 | } | |
651 | break; | |
652 | } | |
653 | }// end jets loop | |
654 | if(injet[jpart] == -1 && fReader->GetCutFlag(jpart) == 1) | |
655 | hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones | |
656 | } //end particle loop | |
657 | ||
658 | //calc areas | |
659 | Float_t eta0 = etamin; | |
660 | Float_t etaw = (etamax - etamin)/((Float_t)ndiv); | |
661 | Float_t eta1 = eta0 + etaw; | |
662 | for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins | |
663 | Float_t etac = eta0 + etaw/2.0; | |
664 | Float_t areabg = etaw*2.0*TMath::Pi(); | |
665 | for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets | |
666 | Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]); | |
667 | Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]); | |
668 | Float_t acc0 = 0.0; Float_t acc1 = 0.0; | |
669 | Float_t areaj = 0.0; | |
670 | if(deta0 > rc && deta1 < rc){ | |
671 | acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1); | |
672 | areaj = acc1; | |
673 | } | |
674 | if(deta0 < rc && deta1 > rc){ | |
675 | acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0); | |
676 | areaj = acc0; | |
677 | } | |
678 | if(deta0 < rc && deta1 < rc){ | |
679 | acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0); | |
680 | acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1); | |
681 | if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1 | |
682 | if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2 | |
683 | if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3 | |
684 | } | |
685 | hAreaJet[ijet]->Fill(etac,areaj); | |
686 | areabg = areabg - areaj; | |
687 | } // end jets loop | |
688 | hAreaBackg->Fill(etac,areabg); | |
689 | eta0 = eta1; | |
690 | eta1 = eta1 + etaw; | |
691 | } // end loop for all eta bins | |
692 | ||
693 | //subtract background | |
694 | for(Int_t kjet=0; kjet<nJ; kjet++){ | |
695 | etJet[kjet] = 0.0; // first clear etJet for this jet | |
696 | for(Int_t bin = 0; bin< ndiv; bin++){ | |
697 | if(hAreaJet[kjet]->GetBinContent(bin)){ | |
698 | Float_t areab = hAreaBackg->GetBinContent(bin); | |
699 | Float_t etb = hEtBackg->GetBinContent(bin); | |
700 | Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab; | |
701 | etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR); //subtraction | |
702 | } | |
703 | } | |
704 | } | |
705 | ||
706 | // calc background total | |
707 | Double_t etOut = hEtBackg->Integral(); | |
708 | Double_t areaOut = hAreaBackg->Integral(); | |
709 | Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi(); | |
710 | etbgTotalN = etOut*areaT/areaOut; | |
711 | ||
712 | //delete | |
713 | for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets | |
714 | delete hEtJet[ljet]; | |
715 | delete hAreaJet[ljet]; | |
716 | } | |
717 | ||
718 | delete hEtBackg; | |
719 | delete hAreaBackg; | |
720 | } | |
721 | ||
722 | //////////////////////////////////////////////////////////////////////// | |
723 | ||
724 | ||
725 | void AliUA1JetFinderV2::SubtractBackgRatio(Int_t& nIn, Int_t&nJ,Float_t& etbgTotalN, | |
726 | Float_t* ptT, Float_t* etaT, Float_t* phiT, | |
727 | Float_t* etJet,Float_t* etaJet, Float_t* phiJet, Float_t* etsigJet, | |
728 | Int_t* multJet, Int_t* injet) | |
729 | { | |
730 | // Ratio background subtraction method taking into acount dEt/deta distribution | |
731 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
732 | //factor F calc before | |
733 | Float_t bgRatioCut = header->GetBackgCutRatio(); | |
734 | ||
735 | ||
736 | //general | |
737 | Float_t rc= header->GetRadius(); | |
738 | Float_t etamax = header->GetLegoEtaMax(); | |
739 | Float_t etamin = header->GetLegoEtaMin(); | |
740 | Int_t ndiv = 100; | |
741 | ||
742 | // jet energy and area arrays | |
743 | TH1F* hEtJet[30]; | |
744 | TH1F* hAreaJet[30]; | |
745 | for(Int_t mjet=0; mjet<nJ; mjet++){ | |
746 | char hEtname[256]; char hAreaname[256]; | |
747 | sprintf(hEtname, "hEtJet%d", mjet); sprintf(hAreaname, "hAreaJet%d", mjet); | |
748 | hEtJet[mjet] = new TH1F(hEtname,"et dist in eta ",ndiv,etamin,etamax); // change range | |
749 | hAreaJet[mjet] = new TH1F(hAreaname,"area dist in eta ",ndiv,etamin,etamax); // change range | |
750 | } | |
751 | // background energy and area | |
752 | TH1F* hEtBackg = new TH1F("hEtBackg"," backg et dist in eta ",ndiv,etamin,etamax); // change range | |
753 | TH1F* hAreaBackg = new TH1F("hAreaBackg","backg area dist in eta ",ndiv,etamin,etamax); // change range | |
754 | ||
755 | //fill energies | |
756 | for(Int_t jpart = 0; jpart < nIn; jpart++){ // loop for all particles in array | |
757 | //if((fReader->GetCutFlag(jpart)) != 1) continue; | |
758 | for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets | |
759 | Float_t deta = etaT[jpart] - etaJet[ijet]; | |
760 | Float_t dphi = phiT[jpart] - phiJet[ijet]; | |
761 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
762 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
763 | Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
764 | if(dr <= rc){ // particles inside this cone | |
765 | multJet[ijet]++; | |
766 | injet[jpart] = ijet; | |
767 | if((fReader->GetCutFlag(jpart)) == 1){ //pt cut | |
768 | hEtJet[ijet]->Fill(etaT[jpart],ptT[jpart]); //particle inside cone and pt cut | |
769 | if(fReader->GetSignalFlag(jpart) == 1) etsigJet[ijet] += ptT[jpart]; | |
770 | } | |
771 | break; | |
772 | } | |
773 | }// end jets loop | |
774 | if(injet[jpart] == -1) hEtBackg->Fill(etaT[jpart],ptT[jpart]); // particle outside cones | |
775 | } //end particle loop | |
776 | ||
777 | //calc areas | |
778 | Float_t eta0 = etamin; | |
779 | Float_t etaw = (etamax - etamin)/((Float_t)ndiv); | |
780 | Float_t eta1 = eta0 + etaw; | |
781 | for(Int_t etabin = 0; etabin< ndiv; etabin++){ // loop for all eta bins | |
782 | Float_t etac = eta0 + etaw/2.0; | |
783 | Float_t areabg = etaw*2.0*TMath::Pi(); | |
784 | for(Int_t ijet=0; ijet<nJ; ijet++){ // loop for all jets | |
785 | Float_t deta0 = TMath::Abs(eta0 - etaJet[ijet]); | |
786 | Float_t deta1 = TMath::Abs(eta1 - etaJet[ijet]); | |
787 | Float_t acc0 = 0.0; Float_t acc1 = 0.0; | |
788 | Float_t areaj = 0.0; | |
789 | if(deta0 > rc && deta1 < rc){ | |
790 | acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1); | |
791 | areaj = acc1; | |
792 | } | |
793 | if(deta0 < rc && deta1 > rc){ | |
794 | acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0); | |
795 | areaj = acc0; | |
796 | } | |
797 | if(deta0 < rc && deta1 < rc){ | |
798 | acc0 = rc*rc*TMath::ACos(deta0/rc) - deta0*TMath::Sqrt(rc*rc - deta0*deta0); | |
799 | acc1 = rc*rc*TMath::ACos(deta1/rc) - deta1*TMath::Sqrt(rc*rc - deta1*deta1); | |
800 | if(eta1<etaJet[ijet]) areaj = acc1-acc0; // case 1 | |
801 | if((eta0 < etaJet[ijet]) && (etaJet[ijet]<eta1)) areaj = rc*rc*TMath::Pi() - acc1 -acc0; // case 2 | |
802 | if(etaJet[ijet] < eta0) areaj = acc0 -acc1; // case 3 | |
803 | } | |
804 | hAreaJet[ijet]->Fill(etac,areaj); | |
805 | areabg = areabg - areaj; | |
806 | } // end jets loop | |
807 | hAreaBackg->Fill(etac,areabg); | |
808 | eta0 = eta1; | |
809 | eta1 = eta1 + etaw; | |
810 | } // end loop for all eta bins | |
811 | ||
812 | //subtract background | |
813 | for(Int_t kjet=0; kjet<nJ; kjet++){ | |
814 | etJet[kjet] = 0.0; // first clear etJet for this jet | |
815 | for(Int_t bin = 0; bin< ndiv; bin++){ | |
816 | if(hAreaJet[kjet]->GetBinContent(bin)){ | |
817 | Float_t areab = hAreaBackg->GetBinContent(bin); | |
818 | Float_t etb = hEtBackg->GetBinContent(bin); | |
819 | Float_t areaR = (hAreaJet[kjet]->GetBinContent(bin))/areab; | |
820 | etJet[kjet] = etJet[kjet] + ((hEtJet[kjet]->GetBinContent(bin)) - etb*areaR*bgRatioCut); //subtraction | |
821 | } | |
822 | } | |
823 | } | |
824 | ||
825 | // calc background total | |
826 | Double_t etOut = hEtBackg->Integral(); | |
827 | Double_t areaOut = hAreaBackg->Integral(); | |
828 | Float_t areaT = 4*(header->GetLegoEtaMax())*TMath::Pi(); | |
829 | etbgTotalN = etOut*areaT/areaOut; | |
830 | ||
831 | //delete | |
832 | for(Int_t ljet=0; ljet<nJ; ljet++){ // loop for all jets | |
833 | delete hEtJet[ljet]; | |
834 | delete hAreaJet[ljet]; | |
835 | } | |
836 | ||
837 | delete hEtBackg; | |
838 | delete hAreaBackg; | |
839 | } | |
840 | ||
841 | //////////////////////////////////////////////////////////////////////// | |
842 | ||
843 | ||
844 | void AliUA1JetFinderV2::Reset() | |
845 | { | |
846 | fLego->Reset(); | |
847 | fJets->ClearJets(); | |
848 | AliJetFinder::Reset(); | |
849 | } | |
850 | ||
851 | //////////////////////////////////////////////////////////////////////// | |
852 | ||
853 | void AliUA1JetFinderV2::WriteJHeaderToFile() | |
854 | { | |
855 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
856 | header->Write(); | |
857 | } | |
858 | ||
859 | //////////////////////////////////////////////////////////////////////// | |
860 | ||
861 | void AliUA1JetFinderV2::Init() | |
862 | { | |
863 | // initializes some variables | |
864 | AliUA1JetHeaderV1* header = (AliUA1JetHeaderV1*) fHeader; | |
865 | // book lego | |
866 | fLego = new | |
867 | TH2F("legoH","eta-phi", | |
868 | header->GetLegoNbinEta(), header->GetLegoEtaMin(), | |
869 | header->GetLegoEtaMax(), header->GetLegoNbinPhi(), | |
870 | header->GetLegoPhiMin(), header->GetLegoPhiMax()); | |
871 | ||
872 | fDebug = fReader->GetReaderHeader()->GetDebug(); | |
873 | fOpt = fReader->GetReaderHeader()->GetDetector(); | |
874 | ||
875 | if(fOpt>0) | |
876 | fReader->CreateTasks(); | |
877 | ||
878 | } |