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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
52using namespace std;
53#include "AliJetBkg.h"
54
55ClassImp(AliJetBkg)
56
57////////////////////////////////////////////////////////////////////////
58
59AliJetBkg::AliJetBkg():
856618e7 60 TObject(),
61 fReader(0),
62 fHeader(0),
63 fInputFJ(0)
50c7d9f7 64{
65 // Default constructor
66
67}
68//______________________________________________________________________
69AliJetBkg::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//______________________________________________________________________
79AliJetBkg& 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,
90Double_t& meanarea){
674c4c04 91
92 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
93 Bool_t debug = header->GetDebug(); // debug option
94 if(debug)cout<<"=============== AliJetBkg::BkgFastJetb() =========== "<<endl;
294056ab 95 vector<fastjet::PseudoJet> inputParticles=fInputFJ->GetInputParticles();
96
97 //cout<<"printing inputParticles for BKG "<<inputParticles.size()<<endl;
98
99
100
674c4c04 101
294056ab 102 double rParamBkg = header->GetRparamBkg(); //Radius for background calculation
103
104 Double_t medianb,sigmab,meanareab;
105 CalcRhob(medianb,sigmab,meanareab,inputParticles,rParamBkg,"All");
106 rho=medianb;
107 sigma=sigmab;
108 meanarea=meanareab;
109
110}
111//_________________________________________________________________
112
113 void AliJetBkg::BkgFastJetWoHardest(Double_t& rho,Double_t& sigma,
114Double_t& meanarea){
674c4c04 115 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
116 Bool_t debug = header->GetDebug(); // debug option
117 if(debug)cout<<"=============== AliJetBkg::BkgWoHardest() =========== "<<endl;
294056ab 118 vector<fastjet::PseudoJet> inputParticles=fInputFJ->GetInputParticles();
119
674c4c04 120 //cout<<"printing inputParticles for BKG "<<inputParticles.size()<<endl;
294056ab 121 double rParamBkg = header->GetRparamBkg(); //Radius for background calculation
122 Double_t medianb,sigmab,meanareab;
123 CalcRhoWoHardest(medianb,sigmab,meanareab,inputParticles,rParamBkg,"All");
124 rho=medianb;
125 sigma=sigmab;
126 meanarea=meanareab;
127
128 }
129
130//____________________________________________________________________
131
132 void AliJetBkg::CalcRhob(Double_t& median,Double_t&
133sigma,Double_t&
134meanarea,vector<fastjet::PseudoJet> inputParticles,Double_t
135rParamBkg,TString method){
136 //calculate rho using the fastjet method
137
138 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
139 Bool_t debug = header->GetDebug(); // debug option
140
141 fastjet::Strategy strategy = header->GetStrategy();
142 fastjet::RecombinationScheme recombScheme = header->GetRecombScheme();
143 fastjet::JetAlgorithm algorithm = header->GetAlgorithm();
144 fastjet::JetDefinition jetDef(algorithm, rParamBkg, recombScheme, strategy);
145
146 // create an object that specifies how we to define the area
147 fastjet::AreaDefinition areaDef;
148 double ghostEtamax = header->GetGhostEtaMax();
149 double ghostArea = header->GetGhostArea();
150 int activeAreaRepeats = header->GetActiveAreaRepeats();
151
152 // now create the object that holds info about ghosts
153
154
155
156 fastjet::GhostedAreaSpec ghost_spec(ghostEtamax, activeAreaRepeats, ghostArea);
157 // and from that get an area definition
158 fastjet::AreaType areaType = header->GetAreaType();
159 areaDef = fastjet::AreaDefinition(areaType,ghost_spec);
160
161 //fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef);
162 fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef,areaDef);
163 TString comment = "Running FastJet algorithm for BKG calculation with the following setup. ";
164 comment+= "Jet definition: ";
165 comment+= TString(jetDef.description());
166 // comment+= ". Area definition: ";
167 //comment+= TString(areaDef.description());
168 comment+= ". Strategy adopted by FastJet: ";
169 comment+= TString(clust_seq.strategy_string());
170 header->SetComment(comment);
171 if(debug){
172 cout << "--------------------------------------------------------" << endl;
173 cout << comment << endl;
174 cout << "--------------------------------------------------------" << endl;
175 }
176
177 vector<fastjet::PseudoJet> inclusiveJets = clust_seq.inclusive_jets(0.);
178 vector<fastjet::PseudoJet> jets = sorted_by_pt(inclusiveJets);
179
180
181 //cout<<"# of BKG jets = "<<jets.size()<<endl;
182 // for (size_t j = 0; j < jets.size(); j++) { // loop for jets
183 //printf("BKG Jet found %5d %9.5f %8.5f %10.3f %4.4f
184 //\n",(Int_t)j,jets[j].rap(),jets[j].phi(),jets[j].perp(),
185 //clust_seq.area(jets[j]));
186 // }
187
188
189 double phiMin = 0, phiMax = 0, rapMin = 0, rapMax = 0;
190
191
192 phiMin = 0;
193 phiMax = 2*TMath::Pi();
194
195 rapMax = ghostEtamax - rParamBkg;
196 rapMin = - ghostEtamax + rParamBkg;
197
198
199 fastjet::RangeDefinition range(rapMin, rapMax, phiMin, phiMax);
200
201
202 double medianb, sigmab, meanareab;
203 clust_seq.get_median_rho_and_sigma(inclusiveJets, range, false, medianb, sigmab, meanareab, false);
204 median=medianb;
205 sigma=sigmab;
206 meanarea=meanareab;
207
208
209 }
210
211//____________________________________________________________________
212
213
214 void AliJetBkg::CalcRhoWoHardest(Double_t& median,Double_t&
215sigma,Double_t&
216meanarea,vector<fastjet::PseudoJet> inputParticles,Double_t
217rParamBkg,TString method){
218 //calculate rho using the fastjet method
219
220 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
221 Bool_t debug = header->GetDebug(); // debug option
222
223 fastjet::Strategy strategy = header->GetStrategy();
224 fastjet::RecombinationScheme recombScheme = header->GetRecombScheme();
225 fastjet::JetAlgorithm algorithm = header->GetAlgorithm();
226 fastjet::JetDefinition jetDef(algorithm, rParamBkg, recombScheme, strategy);
227
228 // create an object that specifies how we to define the area
229 fastjet::AreaDefinition areaDef;
230 double ghostEtamax = header->GetGhostEtaMax();
231 double ghostArea = header->GetGhostArea();
232 int activeAreaRepeats = header->GetActiveAreaRepeats();
233
234 // now create the object that holds info about ghosts
235
236
237
238 fastjet::GhostedAreaSpec ghost_spec(ghostEtamax, activeAreaRepeats, ghostArea);
239 // and from that get an area definition
240 fastjet::AreaType areaType = header->GetAreaType();
241 areaDef = fastjet::AreaDefinition(areaType,ghost_spec);
242 //cout<<"rParamBkg="<<rParamBkg<<" ghostEtamax="<<ghostEtamax<<" ghostArea="<<ghostArea<<" areadef="<<TString(areaDef.description())<<endl;
243 //fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef);
244 fastjet::ClusterSequenceArea clust_seq(inputParticles,jetDef,areaDef);
245 TString comment = "Running FastJet algorithm for BKG calculation with the following setup. ";
246 comment+= "Jet definition: ";
247 comment+= TString(jetDef.description());
248 // comment+= ". Area definition: ";
249 //comment+= TString(areaDef.description());
250 comment+= ". Strategy adopted by FastJet: ";
251 comment+= TString(clust_seq.strategy_string());
252 header->SetComment(comment);
253 if(debug){
254 cout << "--------------------------------------------------------" << endl;
255 cout << comment << endl;
256 cout << "--------------------------------------------------------" << endl;
257 }
258
259 vector<fastjet::PseudoJet> inclusiveJets = clust_seq.inclusive_jets(0.);
260 vector<fastjet::PseudoJet> jets = sorted_by_pt(inclusiveJets);
261 vector<fastjet::PseudoJet> jets2=sorted_by_pt(inclusiveJets);
262 if(jets2.size()>=2) jets2.erase(jets2.begin(),jets2.begin()+1);
263
264
265
266 double phiMin = 0, phiMax = 0, rapMin = 0, rapMax = 0;
267
268
269 phiMin = 0;
270 phiMax = 2*TMath::Pi();
271
272 rapMax = ghostEtamax - rParamBkg;
273 rapMin = - ghostEtamax + rParamBkg;
274
275
276 fastjet::RangeDefinition range(rapMin, rapMax, phiMin, phiMax);
277
278
279 double medianb, sigmab, meanareab;
280 clust_seq.get_median_rho_and_sigma(jets2, range, false, medianb, sigmab,
281meanareab, false);
282 median=medianb;
283 sigma=sigmab;
284 meanarea=meanareab;
285
286
287 }
288
289
50c7d9f7 290//___________________________________________________________________
291Float_t AliJetBkg::BkgFastJet(){
292
967c266c 293 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
294 Bool_t debug = header->GetDebug(); // debug option
295
296 if(debug)cout<<"=============== AliJetBkg::BkgFastJet() =========== "<<endl;
50c7d9f7 297 vector<fastjet::PseudoJet> inputParticles=fInputFJ->GetInputParticles();
298
967c266c 299 if(debug)cout<<"printing inputParticles for BKG "<<inputParticles.size()<<endl;
50c7d9f7 300
301 for(UInt_t i=0;i<inputParticles.size();i++){
302 // cout<<" "<<inputParticles[i].px()<<" "<<inputParticles[i].py()<<" "<<inputParticles[i].pz()<<endl;
303
304 }
305
50c7d9f7 306 double rParamBkg = header->GetRparamBkg(); //Radius for background calculation
307 Double_t rho=CalcRho(inputParticles,rParamBkg,"All");
967c266c 308 if(debug)cout<<"-------- rho (from all part)="<<rho<<endl;
50c7d9f7 309 return rho;
310
311}
312//___________________________________________________________________
313Float_t AliJetBkg::BkgChargedFastJet(){
314
967c266c 315 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
316 Bool_t debug = header->GetDebug(); // debug option
317
318 if(debug)cout<<"=============== AliJetBkg::BkgChargedFastJet() =========== "<<endl;
50c7d9f7 319
320 vector<fastjet::PseudoJet> inputParticlesCharged=fInputFJ->GetInputParticlesCh();
321
967c266c 322 if(debug)cout<<"printing CHARGED inputParticles for BKG "<<inputParticlesCharged.size()<<endl;
50c7d9f7 323
324 for(UInt_t i=0;i<inputParticlesCharged.size();i++){
325 // cout<<" "<<inputParticlesCharged[i].px()<<" "<<inputParticlesCharged[i].py()<<" "<<inputParticlesCharged[i].pz()<<endl;
326
327 }
967c266c 328
50c7d9f7 329 double rParam = header->GetRparam();
330
331 Double_t rho=CalcRho(inputParticlesCharged,rParam,"Charg");
332
674c4c04 333 if(debug)cout<<"-------- rho (from CHARGED part)="<<rho<<endl;
50c7d9f7 334 return rho;
335}
336
337
338
339Float_t AliJetBkg::BkgStat()
340{
341 //background subtraction using statistical method
342
967c266c 343 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
344 Bool_t debug = header->GetDebug(); // debug option
345
346 if(debug)cout<<"==============AliJetBkg::BkgStat()============="<<endl;
50c7d9f7 347 //TO BE IMPLEMENTED
348 // Int_t nTracks= fReader->GetESD()->GetNumberOfTracks();
349 Int_t nTracks= 0;
350 TF1 fun("fun",BkgFunction,0,800,1);
351 Double_t enTot=fun.Eval(nTracks);
352 Double_t accEMCal=2*0.7*110./180*TMath::Pi();//2.68 area of EMCal
353 return enTot/accEMCal;
354
355}
50c7d9f7 356
357////////////////////////////////////////////////////////////////////////
358Float_t AliJetBkg::BkgFastJetCone(TClonesArray* fAODJets)
359{
360
361 // Cone background subtraction method applied on the fastjet: REmove the particles of the
362 // two largest jets with the given R from the estimation of new rho.
50c7d9f7 363
364 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
967c266c 365 Bool_t debug = header->GetDebug(); // debug option
366
367 if(debug)cout<<"==============AliJetBkg::SubtractFastJetBackgCone()============="<<endl;
368
50c7d9f7 369 Float_t rc= header->GetRparam();
370
371 //Hard wired Calorimeter area (get it later from the AliJetReaderHeader.h)
372 Double_t accEMCal=2*0.7*110./180*TMath::Pi();//2.68 area of EMCal
373
374 Int_t nJ=fAODJets->GetEntries(); //this must be the # of jets...
967c266c 375 if(debug)cout<<"nJets: "<<nJ<<endl;
50c7d9f7 376
377
378 //begin unit array
379 TClonesArray* fUnit = fReader->GetUnitArray();
380 if(fUnit == 0) { cout << "Could not get the momentum array" << endl; return -99; }
381
382 Int_t nIn = fUnit->GetEntries();
383 if(nIn == 0) { cout << "entries = 0 ; Event empty !!!" << endl ; return -99; }
384
385 // Information extracted from fUnitArray
386 // load input vectors and calculate total energy in array
387 Float_t pt,eta,phi;
388 Float_t jeteta = 0,jetphi = 0,jeteta1 = 0, jetphi1 = 0;
389 Float_t rhoback=0.0;
390
391 Float_t ptallback=0.0; //particles without the jet
392 Float_t restarea=accEMCal; //initial area set
393 Bool_t acc=0;
394 Bool_t acc1=0;
395 Float_t rCone=0.4;
396
397 if(nJ==1) {
398 AliAODJet *jettmp = dynamic_cast<AliAODJet*>(fAODJets->At(0));
399 jeteta=jettmp->Eta();
400 jetphi=jettmp->Phi();
401 acc=EmcalAcceptance(jeteta,jetphi,rCone);
402 if(acc==1)restarea= accEMCal-TMath::Pi()*rc*rc;
967c266c 403 if(debug)cout<<" acc "<<acc<<endl;
50c7d9f7 404 }
405
406
407 if(nJ>=2) {
408 AliAODJet *jettmp = dynamic_cast<AliAODJet*>(fAODJets->At(0));
409 AliAODJet *jettmp1 = dynamic_cast<AliAODJet*>(fAODJets->At(1));
410 jeteta=jettmp->Eta();
411 jetphi=jettmp->Phi();
412 jeteta1=jettmp1->Eta();
413 jetphi1=jettmp1->Phi();
414 acc=EmcalAcceptance(jeteta,jetphi,rCone);
415 acc1=EmcalAcceptance(jeteta1,jetphi1,rCone);
416 if(acc1==1 && acc==1)restarea= accEMCal-2*TMath::Pi()*rc*rc;
417 if(acc1==1 && acc==0)restarea= accEMCal-TMath::Pi()*rc*rc;
418 if(acc1==0 && acc==1)restarea= accEMCal-TMath::Pi()*rc*rc;
419
967c266c 420 if(debug)cout<<" acc1="<<acc<<" acc2="<<acc1<<" restarea="<<restarea<<endl;
50c7d9f7 421
422 }
423
424 // cout<<" nIn = "<<nIn<<endl;
425 Float_t sumpt=0;
426 for(Int_t i=0; i<nIn; i++)
427 { //Unit Array Loop
428 AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i);
429 if(uArray->GetUnitEnergy()>0.){
430
431 pt = uArray->GetUnitEnergy();
432 eta = uArray->GetUnitEta();
433 phi = uArray->GetUnitPhi();
434
435 //cout<<"test emcal acceptance for particles "<<EmcalAcceptance(eta,phi,0.)<<endl;
436
437 Float_t deta=0.0, dphi=0.0, dr=100.0;
438 Float_t deta1=0.0, dphi1=0.0, dr1=100.0;
439
440 //cout<<i<<" pt="<<pt<<" eta="<<eta<<" phi="<<phi<<endl;
441 if(phi>1.396 && phi<3.316 && eta>-0.7 && eta<0.7){
442 sumpt+=pt;
443 //if(i<30)cout<<i<<" pt unit = "<<pt<<endl;
444
445 if(nJ==1 && acc==1) {
446 deta = eta - jeteta;
447 dphi = phi - jetphi;
448 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
449 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
450 dr = TMath::Sqrt(deta * deta + dphi * dphi);
451 if(dr<=rc)sumpt-=pt;
452 }
453
454 if(nJ>=2) {
455 if(acc==1){
456 deta = eta - jeteta;
457 dphi = phi - jetphi;
458 if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
459 if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
460 dr = TMath::Sqrt(deta * deta + dphi * dphi);
461 if(dr<=rc)sumpt-=pt;
462 }
463 if(acc1==1){
464 deta1 = eta - jeteta1;
465 dphi1 = phi - jetphi1;
466 if (dphi1 < -TMath::Pi()) dphi1= -dphi1 - 2.0 * TMath::Pi();
467 if (dphi1 > TMath::Pi()) dphi1 = 2.0 * TMath::Pi() - dphi1;
468 dr1 = TMath::Sqrt(deta1 * deta1 + dphi1 * dphi1);
469 if(dr1<=rc)sumpt-=pt;
470 }
471
472 }
473
474 if(dr >= rc && dr1 >=rc) {
475 // particles outside both cones
476
477 //cout<<" out of the cone "<<dr<<" "<<deta<<" deltaeta "<<dphi<<" dphi "<<i<<" particle "<<endl;
478 //cout<<" out of the cone "<<dr1<<" "<<deta1<<" deltaeta1 "<<dphi1<<" dphi1 "<<i<<" particle "<<endl;
479 ptallback+=pt;
480 }
481 }
482 //cout<<" ipart "<<ipart<<" rhointegral "<<rhoback <<endl;
483 }
484 } // End loop on UnitArray
485
967c266c 486 if(debug)cout<<"total area left "<<restarea<<endl;
487 if(debug)cout<<"sumpt="<<sumpt<<endl;
50c7d9f7 488 // if(acc==1 || acc1==1) rhoback= ptallback/restarea;
489 //else rhoback=ptallback;
490
491 rhoback= ptallback/restarea;
967c266c 492 if(debug)cout<<"rhoback "<<rhoback<<" "<<nJ<<" "<<endl;
50c7d9f7 493
494 return rhoback;
495
496}
497
498
499Double_t AliJetBkg::CalcRho(vector<fastjet::PseudoJet> inputParticles,Double_t rParamBkg,TString method){
500 //calculate rho using the fastjet method
501
502 AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader;
503 Bool_t debug = header->GetDebug(); // debug option
504
505 fastjet::Strategy strategy = header->GetStrategy();
506 fastjet::RecombinationScheme recombScheme = header->GetRecombScheme();
507 fastjet::JetAlgorithm algorithm = header->GetAlgorithm();
508 fastjet::JetDefinition jetDef(algorithm, rParamBkg, recombScheme, strategy);
509
510 // create an object that specifies how we to define the area
511 fastjet::AreaDefinition areaDef;
512 double ghostEtamax = header->GetGhostEtaMax();
513 double ghostArea = header->GetGhostArea();
514 int activeAreaRepeats = header->GetActiveAreaRepeats();
515
516 // now create the object that holds info about ghosts
517
518 if (method.Contains("Charg"))ghostEtamax=0.9;
519
520 fastjet::GhostedAreaSpec ghost_spec(ghostEtamax, activeAreaRepeats, ghostArea);
521 // and from that get an area definition
522 fastjet::AreaType areaType = header->GetAreaType();
523 areaDef = fastjet::AreaDefinition(areaType,ghost_spec);
967c266c 524 if(debug)cout<<"rParamBkg="<<rParamBkg<<" ghostEtamax="<<ghostEtamax<<" ghostArea="<<ghostArea<<" areadef="<<TString(areaDef.description())<<endl;
50c7d9f7 525 //fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef);
526 fastjet::ClusterSequenceArea clust_seq(inputParticles, jetDef,areaDef);
527 TString comment = "Running FastJet algorithm for BKG calculation with the following setup. ";
528 comment+= "Jet definition: ";
529 comment+= TString(jetDef.description());
530 // comment+= ". Area definition: ";
531 //comment+= TString(areaDef.description());
532 comment+= ". Strategy adopted by FastJet: ";
533 comment+= TString(clust_seq.strategy_string());
534 header->SetComment(comment);
535 if(debug){
536 cout << "--------------------------------------------------------" << endl;
537 cout << comment << endl;
538 cout << "--------------------------------------------------------" << endl;
539 }
540
541 double ptmin = header->GetPtMin();
542 vector<fastjet::PseudoJet> inclusiveJets = clust_seq.inclusive_jets(ptmin);
543 vector<fastjet::PseudoJet> jets = sorted_by_pt(inclusiveJets);
50c7d9f7 544
db2272d5 545 if (debug) {
546 cout<<"# of BKG jets = "<<jets.size()<<endl;
547 for (size_t j = 0; j < jets.size(); j++) { // loop for jets
548 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]));
549 }
550 }
551
50c7d9f7 552 double phiMin = 0, phiMax = 0, rapMin = 0, rapMax = 0;
553
554 if (method.Contains("All")){
555 phiMin = 80.*TMath::Pi()/180+rParamBkg;
556 phiMax = 190.*TMath::Pi()/180-rParamBkg;
50c7d9f7 557 }
558 if (method.Contains("Charg")){
559 phiMin = 0;
560 phiMax = 2*TMath::Pi();
561 }
562 rapMax = ghostEtamax - rParamBkg;
563 rapMin = - ghostEtamax + rParamBkg;
564
565
566 fastjet::RangeDefinition range(rapMin, rapMax, phiMin, phiMax);
567
568
569 Double_t rho=clust_seq.median_pt_per_unit_area(range);
570 // double median, sigma, meanArea;
571 //clust_seq.get_median_rho_and_sigma(inclusiveJets, range, false, median, sigma, meanArea, true);
572 //fastjet::ActiveAreaSpec area_spec(ghostEtamax,activeAreaRepeats,ghostArea);
573
574 // fastjet::ClusterSequenceActiveArea clust_seq_bkg(inputParticles, jetDef,area_spec);
575
576
967c266c 577 if(debug)cout<<"bkg in R="<<rParamBkg<<" : "<<rho<<" range: Rap="<<rapMin<<","<<rapMax<<" -- phi="<<phiMin<<","<<phiMax<<endl;
50c7d9f7 578 return rho;
579}
580
581Float_t AliJetBkg::EtaToTheta(Float_t arg)
582{
583 // return (180./TMath::Pi())*2.*atan(exp(-arg));
584 return 2.*atan(exp(-arg));
585}
586
587
588Double_t AliJetBkg::BkgFunction(Double_t */*x*/,Double_t */*par*/){
589 //to be implemented--- (pT + Energy in EMCal Acceptance vs Multiplicity)
590 return 1;
591}
592
593
594Bool_t AliJetBkg::EmcalAcceptance(const Float_t eta, const Float_t phi, const Float_t radius){
595
596 Float_t meanPhi=190./180.*TMath::Pi()-110./180.*TMath::Pi()/2;
597 Float_t deltaphi=110./180.*TMath::Pi();
598 Float_t phicut=deltaphi/2.-radius;
599 Float_t etacut=0.7-radius;
600 //cout<<" eta "<<eta<<" phi "<<phi<<endl;
601 //cout<<etacut<<" "<<phicut<<" "<<meanPhi<<" "<<endl;
602 if(TMath::Abs(eta)<etacut && TMath::Abs(phi-meanPhi)<phicut) return 1;
603 else return 0;
604}