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50c7d9f7 | 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 | #include <Riostream.h> | |
17 | #include <TChain.h> | |
18 | #include <TFile.h> | |
19 | #include <TList.h> | |
20 | #include <TArrayF.h> | |
21 | #include <TClonesArray.h> | |
22 | #include <TF1.h> | |
23 | #include <TString.h> | |
24 | ||
25 | #include "AliJetHeader.h" | |
26 | #include "AliJetReader.h" | |
27 | #include "AliJetReaderHeader.h" | |
28 | #include "AliFastJetFinder.h" | |
29 | #include "AliFastJetHeaderV1.h" | |
30 | #include "AliJetReaderHeader.h" | |
31 | #include "AliJetReader.h" | |
32 | #include "AliJetUnitArray.h" | |
33 | #include "AliFastJetInput.h" | |
34 | #include "AliESDEvent.h" | |
35 | ||
36 | ||
37 | #include "fastjet/PseudoJet.hh" | |
38 | #include "fastjet/ClusterSequenceArea.hh" | |
39 | #include "fastjet/AreaDefinition.hh" | |
40 | #include "fastjet/JetDefinition.hh" | |
41 | // get info on how fastjet was configured | |
42 | #include "fastjet/config.h" | |
43 | ||
44 | #ifdef ENABLE_PLUGIN_SISCONE | |
45 | #include "fastjet/SISConePlugin.hh" | |
46 | #endif | |
47 | ||
48 | #include<sstream> // needed for internal io | |
49 | #include<vector> | |
50 | #include <cmath> | |
51 | ||
52 | using namespace std; | |
53 | #include "AliJetBkg.h" | |
54 | ||
55 | ClassImp(AliJetBkg) | |
56 | ||
57 | //////////////////////////////////////////////////////////////////////// | |
58 | ||
59 | AliJetBkg::AliJetBkg(): | |
856618e7 | 60 | TObject(), |
61 | fReader(0), | |
62 | fHeader(0), | |
63 | fInputFJ(0) | |
50c7d9f7 | 64 | { |
65 | // Default constructor | |
66 | ||
67 | } | |
68 | //______________________________________________________________________ | |
69 | AliJetBkg::AliJetBkg(const AliJetBkg& input): | |
856618e7 | 70 | TObject(input), |
50c7d9f7 | 71 | fReader(input.fReader), |
72 | fHeader(input.fHeader), | |
856618e7 | 73 | fInputFJ(input.fInputFJ) |
50c7d9f7 | 74 | { |
75 | // copy constructor | |
76 | ||
77 | } | |
78 | //______________________________________________________________________ | |
79 | AliJetBkg& AliJetBkg::operator=(const AliJetBkg& source){ | |
80 | // Assignment operator. | |
81 | this->~AliJetBkg(); | |
82 | new(this) AliJetBkg(source); | |
83 | return *this; | |
84 | ||
85 | } | |
294056ab | 86 | |
87 | ||
88 | //___________________________________________________________________ | |
89 | void AliJetBkg::BkgFastJetb(Double_t& rho,Double_t& sigma, | |
90 | Double_t& meanarea){ | |
91 | ||
92 | cout<<"=============== AliJetBkg::BkgFastJetb() =========== "<<endl; | |
93 | vector<fastjet::PseudoJet> inputParticles=fInputFJ->GetInputParticles(); | |
94 | ||
95 | //cout<<"printing inputParticles for BKG "<<inputParticles.size()<<endl; | |
96 | ||
97 | ||
98 | ||
99 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
100 | double rParamBkg = header->GetRparamBkg(); //Radius for background calculation | |
101 | ||
102 | Double_t medianb,sigmab,meanareab; | |
103 | CalcRhob(medianb,sigmab,meanareab,inputParticles,rParamBkg,"All"); | |
104 | rho=medianb; | |
105 | sigma=sigmab; | |
106 | meanarea=meanareab; | |
107 | ||
108 | } | |
109 | //_________________________________________________________________ | |
110 | ||
111 | void AliJetBkg::BkgFastJetWoHardest(Double_t& rho,Double_t& sigma, | |
112 | Double_t& meanarea){ | |
113 | ||
114 | cout<<"=============== AliJetBkg::BkgWoHardest() =========== "<<endl; | |
115 | vector<fastjet::PseudoJet> inputParticles=fInputFJ->GetInputParticles(); | |
116 | ||
117 | //cout<<"printing inputParticles for BKG "<<inputParticles.size()<<endl; | |
118 | ||
119 | ||
120 | ||
121 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
122 | double rParamBkg = header->GetRparamBkg(); //Radius for background calculation | |
123 | Double_t medianb,sigmab,meanareab; | |
124 | CalcRhoWoHardest(medianb,sigmab,meanareab,inputParticles,rParamBkg,"All"); | |
125 | rho=medianb; | |
126 | sigma=sigmab; | |
127 | meanarea=meanareab; | |
128 | ||
129 | } | |
130 | ||
131 | //____________________________________________________________________ | |
132 | ||
133 | void AliJetBkg::CalcRhob(Double_t& median,Double_t& | |
134 | sigma,Double_t& | |
135 | meanarea,vector<fastjet::PseudoJet> inputParticles,Double_t | |
136 | rParamBkg,TString method){ | |
137 | //calculate rho using the fastjet method | |
138 | ||
139 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
140 | Bool_t debug = header->GetDebug(); // debug option | |
141 | ||
142 | fastjet::Strategy strategy = header->GetStrategy(); | |
143 | fastjet::RecombinationScheme recombScheme = header->GetRecombScheme(); | |
144 | fastjet::JetAlgorithm algorithm = header->GetAlgorithm(); | |
145 | fastjet::JetDefinition jetDef(algorithm, rParamBkg, recombScheme, strategy); | |
146 | ||
147 | // create an object that specifies how we to define the area | |
148 | fastjet::AreaDefinition areaDef; | |
149 | double ghostEtamax = header->GetGhostEtaMax(); | |
150 | double ghostArea = header->GetGhostArea(); | |
151 | int activeAreaRepeats = header->GetActiveAreaRepeats(); | |
152 | ||
153 | // now create the object that holds info about ghosts | |
154 | ||
155 | ||
156 | ||
157 | fastjet::GhostedAreaSpec ghost_spec(ghostEtamax, activeAreaRepeats, ghostArea); | |
158 | // and from that get an area definition | |
159 | fastjet::AreaType areaType = header->GetAreaType(); | |
160 | areaDef = fastjet::AreaDefinition(areaType,ghost_spec); | |
161 | ||
162 | //fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef); | |
163 | fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef,areaDef); | |
164 | TString comment = "Running FastJet algorithm for BKG calculation with the following setup. "; | |
165 | comment+= "Jet definition: "; | |
166 | comment+= TString(jetDef.description()); | |
167 | // comment+= ". Area definition: "; | |
168 | //comment+= TString(areaDef.description()); | |
169 | comment+= ". Strategy adopted by FastJet: "; | |
170 | comment+= TString(clust_seq.strategy_string()); | |
171 | header->SetComment(comment); | |
172 | if(debug){ | |
173 | cout << "--------------------------------------------------------" << endl; | |
174 | cout << comment << endl; | |
175 | cout << "--------------------------------------------------------" << endl; | |
176 | } | |
177 | ||
178 | vector<fastjet::PseudoJet> inclusiveJets = clust_seq.inclusive_jets(0.); | |
179 | vector<fastjet::PseudoJet> jets = sorted_by_pt(inclusiveJets); | |
180 | ||
181 | ||
182 | //cout<<"# of BKG jets = "<<jets.size()<<endl; | |
183 | // for (size_t j = 0; j < jets.size(); j++) { // loop for jets | |
184 | //printf("BKG Jet found %5d %9.5f %8.5f %10.3f %4.4f | |
185 | //\n",(Int_t)j,jets[j].rap(),jets[j].phi(),jets[j].perp(), | |
186 | //clust_seq.area(jets[j])); | |
187 | // } | |
188 | ||
189 | ||
190 | double phiMin = 0, phiMax = 0, rapMin = 0, rapMax = 0; | |
191 | ||
192 | ||
193 | phiMin = 0; | |
194 | phiMax = 2*TMath::Pi(); | |
195 | ||
196 | rapMax = ghostEtamax - rParamBkg; | |
197 | rapMin = - ghostEtamax + rParamBkg; | |
198 | ||
199 | ||
200 | fastjet::RangeDefinition range(rapMin, rapMax, phiMin, phiMax); | |
201 | ||
202 | ||
203 | double medianb, sigmab, meanareab; | |
204 | clust_seq.get_median_rho_and_sigma(inclusiveJets, range, false, medianb, sigmab, meanareab, false); | |
205 | median=medianb; | |
206 | sigma=sigmab; | |
207 | meanarea=meanareab; | |
208 | ||
209 | ||
210 | } | |
211 | ||
212 | //____________________________________________________________________ | |
213 | ||
214 | ||
215 | void AliJetBkg::CalcRhoWoHardest(Double_t& median,Double_t& | |
216 | sigma,Double_t& | |
217 | meanarea,vector<fastjet::PseudoJet> inputParticles,Double_t | |
218 | rParamBkg,TString method){ | |
219 | //calculate rho using the fastjet method | |
220 | ||
221 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
222 | Bool_t debug = header->GetDebug(); // debug option | |
223 | ||
224 | fastjet::Strategy strategy = header->GetStrategy(); | |
225 | fastjet::RecombinationScheme recombScheme = header->GetRecombScheme(); | |
226 | fastjet::JetAlgorithm algorithm = header->GetAlgorithm(); | |
227 | fastjet::JetDefinition jetDef(algorithm, rParamBkg, recombScheme, strategy); | |
228 | ||
229 | // create an object that specifies how we to define the area | |
230 | fastjet::AreaDefinition areaDef; | |
231 | double ghostEtamax = header->GetGhostEtaMax(); | |
232 | double ghostArea = header->GetGhostArea(); | |
233 | int activeAreaRepeats = header->GetActiveAreaRepeats(); | |
234 | ||
235 | // now create the object that holds info about ghosts | |
236 | ||
237 | ||
238 | ||
239 | fastjet::GhostedAreaSpec ghost_spec(ghostEtamax, activeAreaRepeats, ghostArea); | |
240 | // and from that get an area definition | |
241 | fastjet::AreaType areaType = header->GetAreaType(); | |
242 | areaDef = fastjet::AreaDefinition(areaType,ghost_spec); | |
243 | //cout<<"rParamBkg="<<rParamBkg<<" ghostEtamax="<<ghostEtamax<<" ghostArea="<<ghostArea<<" areadef="<<TString(areaDef.description())<<endl; | |
244 | //fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef); | |
245 | fastjet::ClusterSequenceArea clust_seq(inputParticles,jetDef,areaDef); | |
246 | TString comment = "Running FastJet algorithm for BKG calculation with the following setup. "; | |
247 | comment+= "Jet definition: "; | |
248 | comment+= TString(jetDef.description()); | |
249 | // comment+= ". Area definition: "; | |
250 | //comment+= TString(areaDef.description()); | |
251 | comment+= ". Strategy adopted by FastJet: "; | |
252 | comment+= TString(clust_seq.strategy_string()); | |
253 | header->SetComment(comment); | |
254 | if(debug){ | |
255 | cout << "--------------------------------------------------------" << endl; | |
256 | cout << comment << endl; | |
257 | cout << "--------------------------------------------------------" << endl; | |
258 | } | |
259 | ||
260 | vector<fastjet::PseudoJet> inclusiveJets = clust_seq.inclusive_jets(0.); | |
261 | vector<fastjet::PseudoJet> jets = sorted_by_pt(inclusiveJets); | |
262 | vector<fastjet::PseudoJet> jets2=sorted_by_pt(inclusiveJets); | |
263 | if(jets2.size()>=2) jets2.erase(jets2.begin(),jets2.begin()+1); | |
264 | ||
265 | ||
266 | ||
267 | double phiMin = 0, phiMax = 0, rapMin = 0, rapMax = 0; | |
268 | ||
269 | ||
270 | phiMin = 0; | |
271 | phiMax = 2*TMath::Pi(); | |
272 | ||
273 | rapMax = ghostEtamax - rParamBkg; | |
274 | rapMin = - ghostEtamax + rParamBkg; | |
275 | ||
276 | ||
277 | fastjet::RangeDefinition range(rapMin, rapMax, phiMin, phiMax); | |
278 | ||
279 | ||
280 | double medianb, sigmab, meanareab; | |
281 | clust_seq.get_median_rho_and_sigma(jets2, range, false, medianb, sigmab, | |
282 | meanareab, false); | |
283 | median=medianb; | |
284 | sigma=sigmab; | |
285 | meanarea=meanareab; | |
286 | ||
287 | ||
288 | } | |
289 | ||
290 | ||
50c7d9f7 | 291 | //___________________________________________________________________ |
292 | Float_t AliJetBkg::BkgFastJet(){ | |
293 | ||
967c266c | 294 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; |
295 | Bool_t debug = header->GetDebug(); // debug option | |
296 | ||
297 | if(debug)cout<<"=============== AliJetBkg::BkgFastJet() =========== "<<endl; | |
50c7d9f7 | 298 | vector<fastjet::PseudoJet> inputParticles=fInputFJ->GetInputParticles(); |
299 | ||
967c266c | 300 | if(debug)cout<<"printing inputParticles for BKG "<<inputParticles.size()<<endl; |
50c7d9f7 | 301 | |
302 | for(UInt_t i=0;i<inputParticles.size();i++){ | |
303 | // cout<<" "<<inputParticles[i].px()<<" "<<inputParticles[i].py()<<" "<<inputParticles[i].pz()<<endl; | |
304 | ||
305 | } | |
306 | ||
50c7d9f7 | 307 | double rParamBkg = header->GetRparamBkg(); //Radius for background calculation |
308 | Double_t rho=CalcRho(inputParticles,rParamBkg,"All"); | |
967c266c | 309 | if(debug)cout<<"-------- rho (from all part)="<<rho<<endl; |
50c7d9f7 | 310 | return rho; |
311 | ||
312 | } | |
313 | //___________________________________________________________________ | |
314 | Float_t AliJetBkg::BkgChargedFastJet(){ | |
315 | ||
967c266c | 316 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; |
317 | Bool_t debug = header->GetDebug(); // debug option | |
318 | ||
319 | if(debug)cout<<"=============== AliJetBkg::BkgChargedFastJet() =========== "<<endl; | |
50c7d9f7 | 320 | |
321 | vector<fastjet::PseudoJet> inputParticlesCharged=fInputFJ->GetInputParticlesCh(); | |
322 | ||
967c266c | 323 | if(debug)cout<<"printing CHARGED inputParticles for BKG "<<inputParticlesCharged.size()<<endl; |
50c7d9f7 | 324 | |
325 | for(UInt_t i=0;i<inputParticlesCharged.size();i++){ | |
326 | // cout<<" "<<inputParticlesCharged[i].px()<<" "<<inputParticlesCharged[i].py()<<" "<<inputParticlesCharged[i].pz()<<endl; | |
327 | ||
328 | } | |
967c266c | 329 | |
50c7d9f7 | 330 | double rParam = header->GetRparam(); |
331 | ||
332 | Double_t rho=CalcRho(inputParticlesCharged,rParam,"Charg"); | |
333 | ||
334 | cout<<"-------- rho (from CHARGED part)="<<rho<<endl; | |
335 | return rho; | |
336 | } | |
337 | ||
338 | ||
339 | ||
340 | Float_t AliJetBkg::BkgStat() | |
341 | { | |
342 | //background subtraction using statistical method | |
343 | ||
967c266c | 344 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; |
345 | Bool_t debug = header->GetDebug(); // debug option | |
346 | ||
347 | if(debug)cout<<"==============AliJetBkg::BkgStat()============="<<endl; | |
50c7d9f7 | 348 | //TO BE IMPLEMENTED |
349 | // Int_t nTracks= fReader->GetESD()->GetNumberOfTracks(); | |
350 | Int_t nTracks= 0; | |
351 | TF1 fun("fun",BkgFunction,0,800,1); | |
352 | Double_t enTot=fun.Eval(nTracks); | |
353 | Double_t accEMCal=2*0.7*110./180*TMath::Pi();//2.68 area of EMCal | |
354 | return enTot/accEMCal; | |
355 | ||
356 | } | |
50c7d9f7 | 357 | |
358 | //////////////////////////////////////////////////////////////////////// | |
359 | Float_t AliJetBkg::BkgFastJetCone(TClonesArray* fAODJets) | |
360 | { | |
361 | ||
362 | // Cone background subtraction method applied on the fastjet: REmove the particles of the | |
363 | // two largest jets with the given R from the estimation of new rho. | |
50c7d9f7 | 364 | |
365 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
967c266c | 366 | Bool_t debug = header->GetDebug(); // debug option |
367 | ||
368 | if(debug)cout<<"==============AliJetBkg::SubtractFastJetBackgCone()============="<<endl; | |
369 | ||
50c7d9f7 | 370 | Float_t rc= header->GetRparam(); |
371 | ||
372 | //Hard wired Calorimeter area (get it later from the AliJetReaderHeader.h) | |
373 | Double_t accEMCal=2*0.7*110./180*TMath::Pi();//2.68 area of EMCal | |
374 | ||
375 | Int_t nJ=fAODJets->GetEntries(); //this must be the # of jets... | |
967c266c | 376 | if(debug)cout<<"nJets: "<<nJ<<endl; |
50c7d9f7 | 377 | |
378 | ||
379 | //begin unit array | |
380 | TClonesArray* fUnit = fReader->GetUnitArray(); | |
381 | if(fUnit == 0) { cout << "Could not get the momentum array" << endl; return -99; } | |
382 | ||
383 | Int_t nIn = fUnit->GetEntries(); | |
384 | if(nIn == 0) { cout << "entries = 0 ; Event empty !!!" << endl ; return -99; } | |
385 | ||
386 | // Information extracted from fUnitArray | |
387 | // load input vectors and calculate total energy in array | |
388 | Float_t pt,eta,phi; | |
389 | Float_t jeteta = 0,jetphi = 0,jeteta1 = 0, jetphi1 = 0; | |
390 | Float_t rhoback=0.0; | |
391 | ||
392 | Float_t ptallback=0.0; //particles without the jet | |
393 | Float_t restarea=accEMCal; //initial area set | |
394 | Bool_t acc=0; | |
395 | Bool_t acc1=0; | |
396 | Float_t rCone=0.4; | |
397 | ||
398 | if(nJ==1) { | |
399 | AliAODJet *jettmp = dynamic_cast<AliAODJet*>(fAODJets->At(0)); | |
400 | jeteta=jettmp->Eta(); | |
401 | jetphi=jettmp->Phi(); | |
402 | acc=EmcalAcceptance(jeteta,jetphi,rCone); | |
403 | if(acc==1)restarea= accEMCal-TMath::Pi()*rc*rc; | |
967c266c | 404 | if(debug)cout<<" acc "<<acc<<endl; |
50c7d9f7 | 405 | } |
406 | ||
407 | ||
408 | if(nJ>=2) { | |
409 | AliAODJet *jettmp = dynamic_cast<AliAODJet*>(fAODJets->At(0)); | |
410 | AliAODJet *jettmp1 = dynamic_cast<AliAODJet*>(fAODJets->At(1)); | |
411 | jeteta=jettmp->Eta(); | |
412 | jetphi=jettmp->Phi(); | |
413 | jeteta1=jettmp1->Eta(); | |
414 | jetphi1=jettmp1->Phi(); | |
415 | acc=EmcalAcceptance(jeteta,jetphi,rCone); | |
416 | acc1=EmcalAcceptance(jeteta1,jetphi1,rCone); | |
417 | if(acc1==1 && acc==1)restarea= accEMCal-2*TMath::Pi()*rc*rc; | |
418 | if(acc1==1 && acc==0)restarea= accEMCal-TMath::Pi()*rc*rc; | |
419 | if(acc1==0 && acc==1)restarea= accEMCal-TMath::Pi()*rc*rc; | |
420 | ||
967c266c | 421 | if(debug)cout<<" acc1="<<acc<<" acc2="<<acc1<<" restarea="<<restarea<<endl; |
50c7d9f7 | 422 | |
423 | } | |
424 | ||
425 | // cout<<" nIn = "<<nIn<<endl; | |
426 | Float_t sumpt=0; | |
427 | for(Int_t i=0; i<nIn; i++) | |
428 | { //Unit Array Loop | |
429 | AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i); | |
430 | if(uArray->GetUnitEnergy()>0.){ | |
431 | ||
432 | pt = uArray->GetUnitEnergy(); | |
433 | eta = uArray->GetUnitEta(); | |
434 | phi = uArray->GetUnitPhi(); | |
435 | ||
436 | //cout<<"test emcal acceptance for particles "<<EmcalAcceptance(eta,phi,0.)<<endl; | |
437 | ||
438 | Float_t deta=0.0, dphi=0.0, dr=100.0; | |
439 | Float_t deta1=0.0, dphi1=0.0, dr1=100.0; | |
440 | ||
441 | //cout<<i<<" pt="<<pt<<" eta="<<eta<<" phi="<<phi<<endl; | |
442 | if(phi>1.396 && phi<3.316 && eta>-0.7 && eta<0.7){ | |
443 | sumpt+=pt; | |
444 | //if(i<30)cout<<i<<" pt unit = "<<pt<<endl; | |
445 | ||
446 | if(nJ==1 && acc==1) { | |
447 | deta = eta - jeteta; | |
448 | dphi = phi - jetphi; | |
449 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
450 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
451 | dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
452 | if(dr<=rc)sumpt-=pt; | |
453 | } | |
454 | ||
455 | if(nJ>=2) { | |
456 | if(acc==1){ | |
457 | deta = eta - jeteta; | |
458 | dphi = phi - jetphi; | |
459 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
460 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
461 | dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
462 | if(dr<=rc)sumpt-=pt; | |
463 | } | |
464 | if(acc1==1){ | |
465 | deta1 = eta - jeteta1; | |
466 | dphi1 = phi - jetphi1; | |
467 | if (dphi1 < -TMath::Pi()) dphi1= -dphi1 - 2.0 * TMath::Pi(); | |
468 | if (dphi1 > TMath::Pi()) dphi1 = 2.0 * TMath::Pi() - dphi1; | |
469 | dr1 = TMath::Sqrt(deta1 * deta1 + dphi1 * dphi1); | |
470 | if(dr1<=rc)sumpt-=pt; | |
471 | } | |
472 | ||
473 | } | |
474 | ||
475 | if(dr >= rc && dr1 >=rc) { | |
476 | // particles outside both cones | |
477 | ||
478 | //cout<<" out of the cone "<<dr<<" "<<deta<<" deltaeta "<<dphi<<" dphi "<<i<<" particle "<<endl; | |
479 | //cout<<" out of the cone "<<dr1<<" "<<deta1<<" deltaeta1 "<<dphi1<<" dphi1 "<<i<<" particle "<<endl; | |
480 | ptallback+=pt; | |
481 | } | |
482 | } | |
483 | //cout<<" ipart "<<ipart<<" rhointegral "<<rhoback <<endl; | |
484 | } | |
485 | } // End loop on UnitArray | |
486 | ||
967c266c | 487 | if(debug)cout<<"total area left "<<restarea<<endl; |
488 | if(debug)cout<<"sumpt="<<sumpt<<endl; | |
50c7d9f7 | 489 | // if(acc==1 || acc1==1) rhoback= ptallback/restarea; |
490 | //else rhoback=ptallback; | |
491 | ||
492 | rhoback= ptallback/restarea; | |
967c266c | 493 | if(debug)cout<<"rhoback "<<rhoback<<" "<<nJ<<" "<<endl; |
50c7d9f7 | 494 | |
495 | return rhoback; | |
496 | ||
497 | } | |
498 | ||
499 | ||
500 | Double_t AliJetBkg::CalcRho(vector<fastjet::PseudoJet> inputParticles,Double_t rParamBkg,TString method){ | |
501 | //calculate rho using the fastjet method | |
502 | ||
503 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
504 | Bool_t debug = header->GetDebug(); // debug option | |
505 | ||
506 | fastjet::Strategy strategy = header->GetStrategy(); | |
507 | fastjet::RecombinationScheme recombScheme = header->GetRecombScheme(); | |
508 | fastjet::JetAlgorithm algorithm = header->GetAlgorithm(); | |
509 | fastjet::JetDefinition jetDef(algorithm, rParamBkg, recombScheme, strategy); | |
510 | ||
511 | // create an object that specifies how we to define the area | |
512 | fastjet::AreaDefinition areaDef; | |
513 | double ghostEtamax = header->GetGhostEtaMax(); | |
514 | double ghostArea = header->GetGhostArea(); | |
515 | int activeAreaRepeats = header->GetActiveAreaRepeats(); | |
516 | ||
517 | // now create the object that holds info about ghosts | |
518 | ||
519 | if (method.Contains("Charg"))ghostEtamax=0.9; | |
520 | ||
521 | fastjet::GhostedAreaSpec ghost_spec(ghostEtamax, activeAreaRepeats, ghostArea); | |
522 | // and from that get an area definition | |
523 | fastjet::AreaType areaType = header->GetAreaType(); | |
524 | areaDef = fastjet::AreaDefinition(areaType,ghost_spec); | |
967c266c | 525 | if(debug)cout<<"rParamBkg="<<rParamBkg<<" ghostEtamax="<<ghostEtamax<<" ghostArea="<<ghostArea<<" areadef="<<TString(areaDef.description())<<endl; |
50c7d9f7 | 526 | //fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef); |
527 | fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef,areaDef); | |
528 | TString comment = "Running FastJet algorithm for BKG calculation with the following setup. "; | |
529 | comment+= "Jet definition: "; | |
530 | comment+= TString(jetDef.description()); | |
531 | // comment+= ". Area definition: "; | |
532 | //comment+= TString(areaDef.description()); | |
533 | comment+= ". Strategy adopted by FastJet: "; | |
534 | comment+= TString(clust_seq.strategy_string()); | |
535 | header->SetComment(comment); | |
536 | if(debug){ | |
537 | cout << "--------------------------------------------------------" << endl; | |
538 | cout << comment << endl; | |
539 | cout << "--------------------------------------------------------" << endl; | |
540 | } | |
541 | ||
542 | double ptmin = header->GetPtMin(); | |
543 | vector<fastjet::PseudoJet> inclusiveJets = clust_seq.inclusive_jets(ptmin); | |
544 | vector<fastjet::PseudoJet> jets = sorted_by_pt(inclusiveJets); | |
50c7d9f7 | 545 | |
db2272d5 | 546 | if (debug) { |
547 | cout<<"# of BKG jets = "<<jets.size()<<endl; | |
548 | for (size_t j = 0; j < jets.size(); j++) { // loop for jets | |
549 | printf("BKG Jet found %5d %9.5f %8.5f %10.3f %4.4f \n",(Int_t)j,jets[j].rap(),jets[j].phi(),jets[j].perp(),clust_seq.area(jets[j])); | |
550 | } | |
551 | } | |
552 | ||
50c7d9f7 | 553 | double phiMin = 0, phiMax = 0, rapMin = 0, rapMax = 0; |
554 | ||
555 | if (method.Contains("All")){ | |
556 | phiMin = 80.*TMath::Pi()/180+rParamBkg; | |
557 | phiMax = 190.*TMath::Pi()/180-rParamBkg; | |
50c7d9f7 | 558 | } |
559 | if (method.Contains("Charg")){ | |
560 | phiMin = 0; | |
561 | phiMax = 2*TMath::Pi(); | |
562 | } | |
563 | rapMax = ghostEtamax - rParamBkg; | |
564 | rapMin = - ghostEtamax + rParamBkg; | |
565 | ||
566 | ||
567 | fastjet::RangeDefinition range(rapMin, rapMax, phiMin, phiMax); | |
568 | ||
569 | ||
570 | Double_t rho=clust_seq.median_pt_per_unit_area(range); | |
571 | // double median, sigma, meanArea; | |
572 | //clust_seq.get_median_rho_and_sigma(inclusiveJets, range, false, median, sigma, meanArea, true); | |
573 | //fastjet::ActiveAreaSpec area_spec(ghostEtamax,activeAreaRepeats,ghostArea); | |
574 | ||
575 | // fastjet::ClusterSequenceActiveArea clust_seq_bkg(inputParticles, jetDef,area_spec); | |
576 | ||
577 | ||
967c266c | 578 | if(debug)cout<<"bkg in R="<<rParamBkg<<" : "<<rho<<" range: Rap="<<rapMin<<","<<rapMax<<" -- phi="<<phiMin<<","<<phiMax<<endl; |
50c7d9f7 | 579 | return rho; |
580 | } | |
581 | ||
582 | Float_t AliJetBkg::EtaToTheta(Float_t arg) | |
583 | { | |
584 | // return (180./TMath::Pi())*2.*atan(exp(-arg)); | |
585 | return 2.*atan(exp(-arg)); | |
586 | } | |
587 | ||
588 | ||
589 | Double_t AliJetBkg::BkgFunction(Double_t */*x*/,Double_t */*par*/){ | |
590 | //to be implemented--- (pT + Energy in EMCal Acceptance vs Multiplicity) | |
591 | return 1; | |
592 | } | |
593 | ||
594 | ||
595 | Bool_t AliJetBkg::EmcalAcceptance(const Float_t eta, const Float_t phi, const Float_t radius){ | |
596 | ||
597 | Float_t meanPhi=190./180.*TMath::Pi()-110./180.*TMath::Pi()/2; | |
598 | Float_t deltaphi=110./180.*TMath::Pi(); | |
599 | Float_t phicut=deltaphi/2.-radius; | |
600 | Float_t etacut=0.7-radius; | |
601 | //cout<<" eta "<<eta<<" phi "<<phi<<endl; | |
602 | //cout<<etacut<<" "<<phicut<<" "<<meanPhi<<" "<<endl; | |
603 | if(TMath::Abs(eta)<etacut && TMath::Abs(phi-meanPhi)<phicut) return 1; | |
604 | else return 0; | |
605 | } |