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8d2cd130 | 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 | ||
7cdba479 | 16 | /* $Id$ */ |
8d2cd130 | 17 | |
18 | // | |
19 | // Generator using the TPythia interface (via AliPythia) | |
20 | // to generate pp collisions. | |
21 | // Using SetNuclei() also nuclear modifications to the structure functions | |
22 | // can be taken into account. This makes, of course, only sense for the | |
23 | // generation of the products of hard processes (heavy flavor, jets ...) | |
24 | // | |
25 | // andreas.morsch@cern.ch | |
26 | // | |
27 | ||
37b09b91 | 28 | #include <TClonesArray.h> |
8d2cd130 | 29 | #include <TDatabasePDG.h> |
30 | #include <TParticle.h> | |
31 | #include <TPDGCode.h> | |
1058d9df | 32 | #include <TObjArray.h> |
8d2cd130 | 33 | #include <TSystem.h> |
34 | #include <TTree.h> | |
8d2cd130 | 35 | #include "AliConst.h" |
36 | #include "AliDecayerPythia.h" | |
37 | #include "AliGenPythia.h" | |
cd07c39b | 38 | #include "AliFastGlauber.h" |
5fa4b20b | 39 | #include "AliHeader.h" |
8d2cd130 | 40 | #include "AliGenPythiaEventHeader.h" |
41 | #include "AliPythia.h" | |
7cdba479 | 42 | #include "AliPythiaRndm.h" |
8d2cd130 | 43 | #include "AliRun.h" |
7ea3ea5b | 44 | #include "AliStack.h" |
45 | #include "AliRunLoader.h" | |
5d12ce38 | 46 | #include "AliMC.h" |
c93255fe | 47 | #include "AliLog.h" |
e2d34d35 | 48 | #include "PyquenCommon.h" |
8d2cd130 | 49 | |
014a9521 | 50 | ClassImp(AliGenPythia) |
8d2cd130 | 51 | |
e8a8adcd | 52 | |
53 | AliGenPythia::AliGenPythia(): | |
54 | AliGenMC(), | |
55 | fProcess(kPyCharm), | |
efe3b1cd | 56 | fItune(-1), |
e8a8adcd | 57 | fStrucFunc(kCTEQ5L), |
e8a8adcd | 58 | fKineBias(0.), |
59 | fTrials(0), | |
60 | fTrialsRun(0), | |
61 | fQ(0.), | |
62 | fX1(0.), | |
63 | fX2(0.), | |
64 | fEventTime(0.), | |
65 | fInteractionRate(0.), | |
66 | fTimeWindow(0.), | |
67 | fCurSubEvent(0), | |
68 | fEventsTime(0), | |
69 | fNev(0), | |
70 | fFlavorSelect(0), | |
71 | fXsection(0.), | |
72 | fPythia(0), | |
73 | fPtHardMin(0.), | |
74 | fPtHardMax(1.e4), | |
75 | fYHardMin(-1.e10), | |
76 | fYHardMax(1.e10), | |
77 | fGinit(1), | |
78 | fGfinal(1), | |
79 | fHadronisation(1), | |
03358a32 | 80 | fPatchOmegaDalitz(0), |
e8a8adcd | 81 | fNpartons(0), |
82 | fReadFromFile(0), | |
83 | fQuench(0), | |
cd07c39b | 84 | fQhat(0.), |
85 | fLength(0.), | |
e6fe9b82 | 86 | fImpact(0.), |
e8a8adcd | 87 | fPtKick(1.), |
88 | fFullEvent(kTRUE), | |
89 | fDecayer(new AliDecayerPythia()), | |
90 | fDebugEventFirst(-1), | |
91 | fDebugEventLast(-1), | |
92 | fEtMinJet(0.), | |
93 | fEtMaxJet(1.e4), | |
94 | fEtaMinJet(-20.), | |
95 | fEtaMaxJet(20.), | |
96 | fPhiMinJet(0.), | |
97 | fPhiMaxJet(2.* TMath::Pi()), | |
98 | fJetReconstruction(kCell), | |
99 | fEtaMinGamma(-20.), | |
100 | fEtaMaxGamma(20.), | |
101 | fPhiMinGamma(0.), | |
102 | fPhiMaxGamma(2. * TMath::Pi()), | |
103 | fPycellEtaMax(2.), | |
104 | fPycellNEta(274), | |
105 | fPycellNPhi(432), | |
106 | fPycellThreshold(0.), | |
107 | fPycellEtSeed(4.), | |
108 | fPycellMinEtJet(10.), | |
109 | fPycellMaxRadius(1.), | |
110 | fStackFillOpt(kFlavorSelection), | |
111 | fFeedDownOpt(kTRUE), | |
112 | fFragmentation(kTRUE), | |
113 | fSetNuclei(kFALSE), | |
114 | fNewMIS(kFALSE), | |
115 | fHFoff(kFALSE), | |
20e47f08 | 116 | fNucPdf(0), |
e8a8adcd | 117 | fTriggerParticle(0), |
118 | fTriggerEta(0.9), | |
700b9416 | 119 | fTriggerMultiplicity(0), |
120 | fTriggerMultiplicityEta(0), | |
38112f3f | 121 | fTriggerMultiplicityPtMin(0), |
e8a8adcd | 122 | fCountMode(kCountAll), |
123 | fHeader(0), | |
124 | fRL(0), | |
777e69b0 | 125 | fkFileName(0), |
9fd8e520 | 126 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 127 | fPi0InCalo(kFALSE) , |
90a236ce | 128 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 129 | fEleInEMCAL(kFALSE), |
9fd8e520 | 130 | fCheckEMCAL(kFALSE), |
131 | fCheckPHOS(kFALSE), | |
90a236ce | 132 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 133 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 134 | fPhotonMinPt(0), |
9dfe63b3 | 135 | fElectronMinPt(0), |
9fd8e520 | 136 | fPHOSMinPhi(219.), |
137 | fPHOSMaxPhi(321.), | |
138 | fPHOSEta(0.13), | |
139 | fEMCALMinPhi(79.), | |
140 | fEMCALMaxPhi(191.), | |
141 | fEMCALEta(0.71) | |
ec2c406e | 142 | |
8d2cd130 | 143 | { |
144 | // Default Constructor | |
e7c989e4 | 145 | fEnergyCMS = 5500.; |
7cdba479 | 146 | if (!AliPythiaRndm::GetPythiaRandom()) |
e8a8adcd | 147 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 | 148 | } |
149 | ||
150 | AliGenPythia::AliGenPythia(Int_t npart) | |
e8a8adcd | 151 | :AliGenMC(npart), |
152 | fProcess(kPyCharm), | |
efe3b1cd | 153 | fItune(-1), |
e8a8adcd | 154 | fStrucFunc(kCTEQ5L), |
e8a8adcd | 155 | fKineBias(0.), |
156 | fTrials(0), | |
157 | fTrialsRun(0), | |
158 | fQ(0.), | |
159 | fX1(0.), | |
160 | fX2(0.), | |
161 | fEventTime(0.), | |
162 | fInteractionRate(0.), | |
163 | fTimeWindow(0.), | |
164 | fCurSubEvent(0), | |
165 | fEventsTime(0), | |
166 | fNev(0), | |
167 | fFlavorSelect(0), | |
168 | fXsection(0.), | |
169 | fPythia(0), | |
170 | fPtHardMin(0.), | |
171 | fPtHardMax(1.e4), | |
172 | fYHardMin(-1.e10), | |
173 | fYHardMax(1.e10), | |
174 | fGinit(kTRUE), | |
175 | fGfinal(kTRUE), | |
176 | fHadronisation(kTRUE), | |
03358a32 | 177 | fPatchOmegaDalitz(0), |
e8a8adcd | 178 | fNpartons(0), |
179 | fReadFromFile(kFALSE), | |
180 | fQuench(kFALSE), | |
cd07c39b | 181 | fQhat(0.), |
182 | fLength(0.), | |
e6fe9b82 | 183 | fImpact(0.), |
e8a8adcd | 184 | fPtKick(1.), |
185 | fFullEvent(kTRUE), | |
186 | fDecayer(new AliDecayerPythia()), | |
187 | fDebugEventFirst(-1), | |
188 | fDebugEventLast(-1), | |
189 | fEtMinJet(0.), | |
190 | fEtMaxJet(1.e4), | |
191 | fEtaMinJet(-20.), | |
192 | fEtaMaxJet(20.), | |
193 | fPhiMinJet(0.), | |
194 | fPhiMaxJet(2.* TMath::Pi()), | |
195 | fJetReconstruction(kCell), | |
196 | fEtaMinGamma(-20.), | |
197 | fEtaMaxGamma(20.), | |
198 | fPhiMinGamma(0.), | |
199 | fPhiMaxGamma(2. * TMath::Pi()), | |
200 | fPycellEtaMax(2.), | |
201 | fPycellNEta(274), | |
202 | fPycellNPhi(432), | |
203 | fPycellThreshold(0.), | |
204 | fPycellEtSeed(4.), | |
205 | fPycellMinEtJet(10.), | |
206 | fPycellMaxRadius(1.), | |
207 | fStackFillOpt(kFlavorSelection), | |
208 | fFeedDownOpt(kTRUE), | |
209 | fFragmentation(kTRUE), | |
210 | fSetNuclei(kFALSE), | |
211 | fNewMIS(kFALSE), | |
212 | fHFoff(kFALSE), | |
20e47f08 | 213 | fNucPdf(0), |
e8a8adcd | 214 | fTriggerParticle(0), |
215 | fTriggerEta(0.9), | |
700b9416 | 216 | fTriggerMultiplicity(0), |
217 | fTriggerMultiplicityEta(0), | |
38112f3f | 218 | fTriggerMultiplicityPtMin(0), |
e8a8adcd | 219 | fCountMode(kCountAll), |
220 | fHeader(0), | |
221 | fRL(0), | |
777e69b0 | 222 | fkFileName(0), |
9fd8e520 | 223 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 224 | fPi0InCalo(kFALSE) , |
90a236ce | 225 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 226 | fEleInEMCAL(kFALSE), |
9fd8e520 | 227 | fCheckEMCAL(kFALSE), |
228 | fCheckPHOS(kFALSE), | |
90a236ce | 229 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 230 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 231 | fPhotonMinPt(0), |
9dfe63b3 | 232 | fElectronMinPt(0), |
9fd8e520 | 233 | fPHOSMinPhi(219.), |
234 | fPHOSMaxPhi(321.), | |
235 | fPHOSEta(0.13), | |
236 | fEMCALMinPhi(79.), | |
237 | fEMCALMaxPhi(191.), | |
238 | fEMCALEta(0.71) | |
8d2cd130 | 239 | { |
240 | // default charm production at 5. 5 TeV | |
241 | // semimuonic decay | |
242 | // structure function GRVHO | |
243 | // | |
e7c989e4 | 244 | fEnergyCMS = 5500.; |
8d2cd130 | 245 | fName = "Pythia"; |
246 | fTitle= "Particle Generator using PYTHIA"; | |
8d2cd130 | 247 | SetForceDecay(); |
8d2cd130 | 248 | // Set random number generator |
7cdba479 | 249 | if (!AliPythiaRndm::GetPythiaRandom()) |
250 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
76d6ba9a | 251 | } |
8d2cd130 | 252 | |
8d2cd130 | 253 | AliGenPythia::~AliGenPythia() |
254 | { | |
255 | // Destructor | |
9d7108a7 | 256 | if(fEventsTime) delete fEventsTime; |
257 | } | |
258 | ||
259 | void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow) | |
260 | { | |
261 | // Generate pileup using user specified rate | |
262 | fInteractionRate = rate; | |
263 | fTimeWindow = timewindow; | |
264 | GeneratePileup(); | |
265 | } | |
266 | ||
267 | void AliGenPythia::GeneratePileup() | |
268 | { | |
269 | // Generate sub events time for pileup | |
270 | fEventsTime = 0; | |
271 | if(fInteractionRate == 0.) { | |
272 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); | |
273 | return; | |
274 | } | |
275 | ||
276 | Int_t npart = NumberParticles(); | |
277 | if(npart < 0) { | |
278 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); | |
279 | return; | |
280 | } | |
281 | ||
282 | if(fEventsTime) delete fEventsTime; | |
283 | fEventsTime = new TArrayF(npart); | |
284 | TArrayF &array = *fEventsTime; | |
285 | for(Int_t ipart = 0; ipart < npart; ipart++) | |
286 | array[ipart] = 0.; | |
287 | ||
288 | Float_t eventtime = 0.; | |
289 | while(1) | |
290 | { | |
291 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
292 | if(eventtime > fTimeWindow) break; | |
293 | array.Set(array.GetSize()+1); | |
294 | array[array.GetSize()-1] = eventtime; | |
295 | } | |
296 | ||
297 | eventtime = 0.; | |
298 | while(1) | |
299 | { | |
300 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
301 | if(TMath::Abs(eventtime) > fTimeWindow) break; | |
302 | array.Set(array.GetSize()+1); | |
303 | array[array.GetSize()-1] = eventtime; | |
304 | } | |
305 | ||
306 | SetNumberParticles(fEventsTime->GetSize()); | |
8d2cd130 | 307 | } |
308 | ||
592f8307 | 309 | void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, |
310 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) | |
311 | { | |
312 | // Set pycell parameters | |
313 | fPycellEtaMax = etamax; | |
314 | fPycellNEta = neta; | |
315 | fPycellNPhi = nphi; | |
316 | fPycellThreshold = thresh; | |
317 | fPycellEtSeed = etseed; | |
318 | fPycellMinEtJet = minet; | |
319 | fPycellMaxRadius = r; | |
320 | } | |
321 | ||
322 | ||
323 | ||
8d2cd130 | 324 | void AliGenPythia::SetEventListRange(Int_t eventFirst, Int_t eventLast) |
325 | { | |
326 | // Set a range of event numbers, for which a table | |
327 | // of generated particle will be printed | |
328 | fDebugEventFirst = eventFirst; | |
329 | fDebugEventLast = eventLast; | |
330 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; | |
331 | } | |
332 | ||
333 | void AliGenPythia::Init() | |
334 | { | |
335 | // Initialisation | |
336 | ||
337 | SetMC(AliPythia::Instance()); | |
b88f5cea | 338 | fPythia=(AliPythia*) fMCEvGen; |
e2bddf81 | 339 | |
8d2cd130 | 340 | // |
341 | fParentWeight=1./Float_t(fNpart); | |
342 | // | |
8d2cd130 | 343 | |
344 | ||
345 | fPythia->SetCKIN(3,fPtHardMin); | |
346 | fPythia->SetCKIN(4,fPtHardMax); | |
347 | fPythia->SetCKIN(7,fYHardMin); | |
348 | fPythia->SetCKIN(8,fYHardMax); | |
349 | ||
20e47f08 | 350 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget, fNucPdf); |
8d2cd130 | 351 | // Fragmentation? |
352 | if (fFragmentation) { | |
353 | fPythia->SetMSTP(111,1); | |
354 | } else { | |
355 | fPythia->SetMSTP(111,0); | |
356 | } | |
357 | ||
358 | ||
359 | // initial state radiation | |
360 | fPythia->SetMSTP(61,fGinit); | |
361 | // final state radiation | |
362 | fPythia->SetMSTP(71,fGfinal); | |
363 | // pt - kick | |
364 | if (fPtKick > 0.) { | |
365 | fPythia->SetMSTP(91,1); | |
688950ef | 366 | fPythia->SetPARP(91,fPtKick); |
367 | fPythia->SetPARP(93, 4. * fPtKick); | |
8d2cd130 | 368 | } else { |
369 | fPythia->SetMSTP(91,0); | |
370 | } | |
371 | ||
5fa4b20b | 372 | |
373 | if (fReadFromFile) { | |
777e69b0 | 374 | fRL = AliRunLoader::Open(fkFileName, "Partons"); |
5fa4b20b | 375 | fRL->LoadKinematics(); |
376 | fRL->LoadHeader(); | |
377 | } else { | |
378 | fRL = 0x0; | |
379 | } | |
fdea4387 | 380 | // |
efe3b1cd | 381 | fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc, fItune); |
fdea4387 | 382 | // Forward Paramters to the AliPythia object |
383 | fDecayer->SetForceDecay(fForceDecay); | |
beac474c | 384 | // Switch off Heavy Flavors on request |
385 | if (fHFoff) { | |
51387949 | 386 | // Maximum number of quark flavours used in pdf |
beac474c | 387 | fPythia->SetMSTP(58, 3); |
51387949 | 388 | // Maximum number of flavors that can be used in showers |
beac474c | 389 | fPythia->SetMSTJ(45, 3); |
51387949 | 390 | // Switch off g->QQbar splitting in decay table |
391 | ((AliDecayerPythia*) fDecayer)->HeavyFlavourOff(); | |
beac474c | 392 | } |
fdea4387 | 393 | |
51387949 | 394 | fDecayer->Init(); |
395 | ||
8d2cd130 | 396 | |
397 | // Parent and Children Selection | |
398 | switch (fProcess) | |
399 | { | |
65f2626c | 400 | case kPyOldUEQ2ordered: |
401 | case kPyOldUEQ2ordered2: | |
402 | case kPyOldPopcorn: | |
403 | break; | |
8d2cd130 | 404 | case kPyCharm: |
405 | case kPyCharmUnforced: | |
adf4d898 | 406 | case kPyCharmPbPbMNR: |
aabc7187 | 407 | case kPyCharmpPbMNR: |
e0e89f40 | 408 | case kPyCharmppMNR: |
409 | case kPyCharmppMNRwmi: | |
8d2cd130 | 410 | fParentSelect[0] = 411; |
411 | fParentSelect[1] = 421; | |
412 | fParentSelect[2] = 431; | |
413 | fParentSelect[3] = 4122; | |
9ccc3d0e | 414 | fParentSelect[4] = 4232; |
415 | fParentSelect[5] = 4132; | |
416 | fParentSelect[6] = 4332; | |
8d2cd130 | 417 | fFlavorSelect = 4; |
418 | break; | |
adf4d898 | 419 | case kPyD0PbPbMNR: |
420 | case kPyD0pPbMNR: | |
421 | case kPyD0ppMNR: | |
8d2cd130 | 422 | fParentSelect[0] = 421; |
423 | fFlavorSelect = 4; | |
424 | break; | |
90d7b703 | 425 | case kPyDPlusPbPbMNR: |
426 | case kPyDPluspPbMNR: | |
427 | case kPyDPlusppMNR: | |
428 | fParentSelect[0] = 411; | |
429 | fFlavorSelect = 4; | |
430 | break; | |
e0e89f40 | 431 | case kPyDPlusStrangePbPbMNR: |
432 | case kPyDPlusStrangepPbMNR: | |
433 | case kPyDPlusStrangeppMNR: | |
434 | fParentSelect[0] = 431; | |
435 | fFlavorSelect = 4; | |
436 | break; | |
68504d42 | 437 | case kPyLambdacppMNR: |
438 | fParentSelect[0] = 4122; | |
439 | fFlavorSelect = 4; | |
440 | break; | |
8d2cd130 | 441 | case kPyBeauty: |
9dfe63b3 | 442 | case kPyBeautyJets: |
adf4d898 | 443 | case kPyBeautyPbPbMNR: |
444 | case kPyBeautypPbMNR: | |
445 | case kPyBeautyppMNR: | |
e0e89f40 | 446 | case kPyBeautyppMNRwmi: |
8d2cd130 | 447 | fParentSelect[0]= 511; |
448 | fParentSelect[1]= 521; | |
449 | fParentSelect[2]= 531; | |
450 | fParentSelect[3]= 5122; | |
451 | fParentSelect[4]= 5132; | |
452 | fParentSelect[5]= 5232; | |
453 | fParentSelect[6]= 5332; | |
454 | fFlavorSelect = 5; | |
455 | break; | |
456 | case kPyBeautyUnforced: | |
457 | fParentSelect[0] = 511; | |
458 | fParentSelect[1] = 521; | |
459 | fParentSelect[2] = 531; | |
460 | fParentSelect[3] = 5122; | |
461 | fParentSelect[4] = 5132; | |
462 | fParentSelect[5] = 5232; | |
463 | fParentSelect[6] = 5332; | |
464 | fFlavorSelect = 5; | |
465 | break; | |
466 | case kPyJpsiChi: | |
467 | case kPyJpsi: | |
468 | fParentSelect[0] = 443; | |
469 | break; | |
f529e69b | 470 | case kPyMbDefault: |
0bd3d7c5 | 471 | case kPyMbAtlasTuneMC09: |
8d2cd130 | 472 | case kPyMb: |
04081a91 | 473 | case kPyMbWithDirectPhoton: |
8d2cd130 | 474 | case kPyMbNonDiffr: |
d7de4a67 | 475 | case kPyMbMSEL1: |
8d2cd130 | 476 | case kPyJets: |
477 | case kPyDirectGamma: | |
e33acb67 | 478 | case kPyLhwgMb: |
8d2cd130 | 479 | break; |
589380c6 | 480 | case kPyW: |
0f6ee828 | 481 | case kPyZ: |
589380c6 | 482 | break; |
8d2cd130 | 483 | } |
484 | // | |
592f8307 | 485 | // |
486 | // JetFinder for Trigger | |
487 | // | |
488 | // Configure detector (EMCAL like) | |
489 | // | |
d7de4a67 | 490 | fPythia->SetPARU(51, fPycellEtaMax); |
491 | fPythia->SetMSTU(51, fPycellNEta); | |
492 | fPythia->SetMSTU(52, fPycellNPhi); | |
592f8307 | 493 | // |
494 | // Configure Jet Finder | |
495 | // | |
d7de4a67 | 496 | fPythia->SetPARU(58, fPycellThreshold); |
497 | fPythia->SetPARU(52, fPycellEtSeed); | |
498 | fPythia->SetPARU(53, fPycellMinEtJet); | |
499 | fPythia->SetPARU(54, fPycellMaxRadius); | |
500 | fPythia->SetMSTU(54, 2); | |
592f8307 | 501 | // |
8d2cd130 | 502 | // This counts the total number of calls to Pyevnt() per run. |
503 | fTrialsRun = 0; | |
504 | fQ = 0.; | |
505 | fX1 = 0.; | |
506 | fX2 = 0.; | |
507 | fNev = 0 ; | |
508 | // | |
1d568bc2 | 509 | // |
510 | // | |
8d2cd130 | 511 | AliGenMC::Init(); |
1d568bc2 | 512 | // |
513 | // | |
514 | // | |
515 | if (fSetNuclei) { | |
516 | fDyBoost = 0; | |
517 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
518 | } | |
d7de4a67 | 519 | |
cd07c39b | 520 | fPythia->SetPARJ(200, 0.0); |
521 | fPythia->SetPARJ(199, 0.0); | |
522 | fPythia->SetPARJ(198, 0.0); | |
523 | fPythia->SetPARJ(197, 0.0); | |
524 | ||
525 | if (fQuench == 1) { | |
5fa4b20b | 526 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0); |
32d6ef7d | 527 | } |
3a709cfa | 528 | |
b976f7d8 | 529 | if (fQuench == 3) { |
530 | // Nestor's change of the splittings | |
531 | fPythia->SetPARJ(200, 0.8); | |
532 | fPythia->SetMSTJ(41, 1); // QCD radiation only | |
533 | fPythia->SetMSTJ(42, 2); // angular ordering | |
534 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
535 | fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
536 | fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
537 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
cd07c39b | 538 | } else if (fQuench == 4) { |
539 | // Armesto-Cunqueiro-Salgado change of the splittings. | |
540 | AliFastGlauber* glauber = AliFastGlauber::Instance(); | |
541 | glauber->Init(2); | |
542 | //read and store transverse almonds corresponding to differnt | |
543 | //impact parameters. | |
cd07c39b | 544 | glauber->SetCentralityClass(0.,0.1); |
545 | fPythia->SetPARJ(200, 1.); | |
546 | fPythia->SetPARJ(198, fQhat); | |
547 | fPythia->SetPARJ(199, fLength); | |
cd07c39b | 548 | fPythia->SetMSTJ(42, 2); // angular ordering |
549 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
cd07c39b | 550 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers |
b976f7d8 | 551 | } |
8d2cd130 | 552 | } |
553 | ||
554 | void AliGenPythia::Generate() | |
555 | { | |
556 | // Generate one event | |
19ef8cf0 | 557 | if (!fPythia) fPythia=(AliPythia*) fMCEvGen; |
8d2cd130 | 558 | fDecayer->ForceDecay(); |
559 | ||
13cca24a | 560 | Double_t polar[3] = {0,0,0}; |
561 | Double_t origin[3] = {0,0,0}; | |
562 | Double_t p[4]; | |
8d2cd130 | 563 | // converts from mm/c to s |
564 | const Float_t kconv=0.001/2.999792458e8; | |
565 | // | |
566 | Int_t nt=0; | |
567 | Int_t jev=0; | |
568 | Int_t j, kf; | |
569 | fTrials=0; | |
f913ec4f | 570 | fEventTime = 0.; |
571 | ||
2590ccf9 | 572 | |
8d2cd130 | 573 | |
574 | // Set collision vertex position | |
2590ccf9 | 575 | if (fVertexSmear == kPerEvent) Vertex(); |
576 | ||
8d2cd130 | 577 | // event loop |
578 | while(1) | |
579 | { | |
32d6ef7d | 580 | // |
5fa4b20b | 581 | // Produce event |
32d6ef7d | 582 | // |
32d6ef7d | 583 | // |
5fa4b20b | 584 | // Switch hadronisation off |
585 | // | |
586 | fPythia->SetMSTJ(1, 0); | |
cd07c39b | 587 | |
588 | if (fQuench ==4){ | |
589 | Double_t bimp; | |
590 | // Quenching comes through medium-modified splitting functions. | |
591 | AliFastGlauber::Instance()->GetRandomBHard(bimp); | |
e6fe9b82 | 592 | fPythia->SetPARJ(197, bimp); |
593 | fImpact = bimp; | |
6c43eccb | 594 | fPythia->Qpygin0(); |
cd07c39b | 595 | } |
32d6ef7d | 596 | // |
5fa4b20b | 597 | // Either produce new event or read partons from file |
598 | // | |
599 | if (!fReadFromFile) { | |
beac474c | 600 | if (!fNewMIS) { |
601 | fPythia->Pyevnt(); | |
602 | } else { | |
603 | fPythia->Pyevnw(); | |
604 | } | |
5fa4b20b | 605 | fNpartons = fPythia->GetN(); |
606 | } else { | |
33c3c91a | 607 | printf("Loading Event %d\n",AliRunLoader::Instance()->GetEventNumber()); |
608 | fRL->GetEvent(AliRunLoader::Instance()->GetEventNumber()); | |
5fa4b20b | 609 | fPythia->SetN(0); |
610 | LoadEvent(fRL->Stack(), 0 , 1); | |
611 | fPythia->Pyedit(21); | |
612 | } | |
613 | ||
32d6ef7d | 614 | // |
615 | // Run quenching routine | |
616 | // | |
5fa4b20b | 617 | if (fQuench == 1) { |
618 | fPythia->Quench(); | |
619 | } else if (fQuench == 2){ | |
620 | fPythia->Pyquen(208., 0, 0.); | |
b976f7d8 | 621 | } else if (fQuench == 3) { |
622 | // Quenching is via multiplicative correction of the splittings | |
5fa4b20b | 623 | } |
b976f7d8 | 624 | |
32d6ef7d | 625 | // |
5fa4b20b | 626 | // Switch hadronisation on |
32d6ef7d | 627 | // |
20e47f08 | 628 | if (fHadronisation) { |
629 | fPythia->SetMSTJ(1, 1); | |
5fa4b20b | 630 | // |
631 | // .. and perform hadronisation | |
aea21c57 | 632 | // printf("Calling hadronisation %d\n", fPythia->GetN()); |
03358a32 | 633 | |
634 | if (fPatchOmegaDalitz) { | |
635 | fPythia->SetMDCY(fPythia->Pycomp(111) ,1, 0); | |
636 | fPythia->Pyexec(); | |
637 | fPythia->DalitzDecays(); | |
638 | fPythia->SetMDCY(fPythia->Pycomp(111) ,1, 1); | |
639 | } | |
640 | fPythia->Pyexec(); | |
20e47f08 | 641 | } |
8d2cd130 | 642 | fTrials++; |
8507138f | 643 | fPythia->ImportParticles(&fParticles,"All"); |
03358a32 | 644 | |
df275cfa | 645 | if (TMath::Abs(fDyBoost) > 1.e-4) Boost(); |
e1cf8975 | 646 | if(TMath::Abs(fXingAngleY) > 1.e-10) BeamCrossAngle(); |
f64640b5 | 647 | |
8d2cd130 | 648 | // |
649 | // | |
650 | // | |
651 | Int_t i; | |
652 | ||
dbd64db6 | 653 | fNprimaries = 0; |
8507138f | 654 | Int_t np = fParticles.GetEntriesFast(); |
5fa4b20b | 655 | |
7c21f297 | 656 | if (np == 0) continue; |
8d2cd130 | 657 | // |
2590ccf9 | 658 | |
8d2cd130 | 659 | // |
660 | Int_t* pParent = new Int_t[np]; | |
661 | Int_t* pSelected = new Int_t[np]; | |
662 | Int_t* trackIt = new Int_t[np]; | |
5fa4b20b | 663 | for (i = 0; i < np; i++) { |
8d2cd130 | 664 | pParent[i] = -1; |
665 | pSelected[i] = 0; | |
666 | trackIt[i] = 0; | |
667 | } | |
668 | ||
669 | Int_t nc = 0; // Total n. of selected particles | |
670 | Int_t nParents = 0; // Selected parents | |
671 | Int_t nTkbles = 0; // Trackable particles | |
f529e69b | 672 | if (fProcess != kPyMbDefault && |
673 | fProcess != kPyMb && | |
6d2ec66d | 674 | fProcess != kPyMbAtlasTuneMC09 && |
04081a91 | 675 | fProcess != kPyMbWithDirectPhoton && |
f529e69b | 676 | fProcess != kPyJets && |
8d2cd130 | 677 | fProcess != kPyDirectGamma && |
589380c6 | 678 | fProcess != kPyMbNonDiffr && |
d7de4a67 | 679 | fProcess != kPyMbMSEL1 && |
f529e69b | 680 | fProcess != kPyW && |
681 | fProcess != kPyZ && | |
682 | fProcess != kPyCharmppMNRwmi && | |
9dfe63b3 | 683 | fProcess != kPyBeautyppMNRwmi && |
684 | fProcess != kPyBeautyJets) { | |
8d2cd130 | 685 | |
5fa4b20b | 686 | for (i = 0; i < np; i++) { |
8507138f | 687 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 688 | Int_t ks = iparticle->GetStatusCode(); |
689 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
690 | // No initial state partons | |
691 | if (ks==21) continue; | |
692 | // | |
693 | // Heavy Flavor Selection | |
694 | // | |
695 | // quark ? | |
696 | kf = TMath::Abs(kf); | |
697 | Int_t kfl = kf; | |
9ff6c04c | 698 | // Resonance |
f913ec4f | 699 | |
9ff6c04c | 700 | if (kfl > 100000) kfl %= 100000; |
183a5ca9 | 701 | if (kfl > 10000) kfl %= 10000; |
8d2cd130 | 702 | // meson ? |
703 | if (kfl > 10) kfl/=100; | |
704 | // baryon | |
705 | if (kfl > 10) kfl/=10; | |
8d2cd130 | 706 | Int_t ipa = iparticle->GetFirstMother()-1; |
707 | Int_t kfMo = 0; | |
f913ec4f | 708 | // |
709 | // Establish mother daughter relation between heavy quarks and mesons | |
710 | // | |
711 | if (kf >= fFlavorSelect && kf <= 6) { | |
712 | Int_t idau = iparticle->GetFirstDaughter() - 1; | |
713 | if (idau > -1) { | |
8507138f | 714 | TParticle* daughter = (TParticle *) fParticles.At(idau); |
f913ec4f | 715 | Int_t pdgD = daughter->GetPdgCode(); |
716 | if (pdgD == 91 || pdgD == 92) { | |
717 | Int_t jmin = daughter->GetFirstDaughter() - 1; | |
718 | Int_t jmax = daughter->GetLastDaughter() - 1; | |
2ab330c9 | 719 | for (Int_t jp = jmin; jp <= jmax; jp++) |
720 | ((TParticle *) fParticles.At(jp))->SetFirstMother(i+1); | |
f913ec4f | 721 | } // is string or cluster |
722 | } // has daughter | |
723 | } // heavy quark | |
8d2cd130 | 724 | |
f913ec4f | 725 | |
8d2cd130 | 726 | if (ipa > -1) { |
8507138f | 727 | TParticle * mother = (TParticle *) fParticles.At(ipa); |
8d2cd130 | 728 | kfMo = TMath::Abs(mother->GetPdgCode()); |
729 | } | |
f913ec4f | 730 | |
8d2cd130 | 731 | // What to keep in Stack? |
732 | Bool_t flavorOK = kFALSE; | |
733 | Bool_t selectOK = kFALSE; | |
734 | if (fFeedDownOpt) { | |
32d6ef7d | 735 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 | 736 | } else { |
32d6ef7d | 737 | if (kfl > fFlavorSelect) { |
738 | nc = -1; | |
739 | break; | |
740 | } | |
741 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
8d2cd130 | 742 | } |
743 | switch (fStackFillOpt) { | |
744 | case kFlavorSelection: | |
32d6ef7d | 745 | selectOK = kTRUE; |
746 | break; | |
8d2cd130 | 747 | case kParentSelection: |
32d6ef7d | 748 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; |
749 | break; | |
8d2cd130 | 750 | } |
751 | if (flavorOK && selectOK) { | |
752 | // | |
753 | // Heavy flavor hadron or quark | |
754 | // | |
755 | // Kinematic seletion on final state heavy flavor mesons | |
756 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
757 | { | |
9ff6c04c | 758 | continue; |
8d2cd130 | 759 | } |
760 | pSelected[i] = 1; | |
761 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
762 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
763 | } else { | |
764 | // Kinematic seletion on decay products | |
765 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
9ff6c04c | 766 | && !KinematicSelection(iparticle, 1)) |
8d2cd130 | 767 | { |
9ff6c04c | 768 | continue; |
8d2cd130 | 769 | } |
770 | // | |
771 | // Decay products | |
772 | // Select if mother was selected and is not tracked | |
773 | ||
774 | if (pSelected[ipa] && | |
775 | !trackIt[ipa] && // mother will be tracked ? | |
776 | kfMo != 5 && // mother is b-quark, don't store fragments | |
777 | kfMo != 4 && // mother is c-quark, don't store fragments | |
778 | kf != 92) // don't store string | |
779 | { | |
780 | // | |
781 | // Semi-stable or de-selected: diselect decay products: | |
782 | // | |
783 | // | |
784 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
785 | { | |
786 | Int_t ipF = iparticle->GetFirstDaughter(); | |
787 | Int_t ipL = iparticle->GetLastDaughter(); | |
788 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
789 | } | |
790 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
791 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
792 | } | |
793 | } | |
794 | if (pSelected[i] == -1) pSelected[i] = 0; | |
795 | if (!pSelected[i]) continue; | |
796 | // Count quarks only if you did not include fragmentation | |
797 | if (fFragmentation && kf <= 10) continue; | |
9ff6c04c | 798 | |
8d2cd130 | 799 | nc++; |
800 | // Decision on tracking | |
801 | trackIt[i] = 0; | |
802 | // | |
803 | // Track final state particle | |
804 | if (ks == 1) trackIt[i] = 1; | |
805 | // Track semi-stable particles | |
d25cfd65 | 806 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; |
8d2cd130 | 807 | // Track particles selected by process if undecayed. |
808 | if (fForceDecay == kNoDecay) { | |
809 | if (ParentSelected(kf)) trackIt[i] = 1; | |
810 | } else { | |
811 | if (ParentSelected(kf)) trackIt[i] = 0; | |
812 | } | |
813 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
814 | // | |
815 | // | |
816 | ||
817 | } // particle selection loop | |
818 | if (nc > 0) { | |
819 | for (i = 0; i<np; i++) { | |
820 | if (!pSelected[i]) continue; | |
8507138f | 821 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 822 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
823 | Int_t ks = iparticle->GetStatusCode(); | |
824 | p[0] = iparticle->Px(); | |
825 | p[1] = iparticle->Py(); | |
826 | p[2] = iparticle->Pz(); | |
a920faf9 | 827 | p[3] = iparticle->Energy(); |
828 | ||
2590ccf9 | 829 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
830 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
831 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
832 | ||
8d2cd130 | 833 | Float_t tof = kconv*iparticle->T(); |
834 | Int_t ipa = iparticle->GetFirstMother()-1; | |
835 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
a920faf9 | 836 | |
837 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
838 | p[0], p[1], p[2], p[3], | |
839 | origin[0], origin[1], origin[2], tof, | |
840 | polar[0], polar[1], polar[2], | |
841 | kPPrimary, nt, 1., ks); | |
8d2cd130 | 842 | pParent[i] = nt; |
dbd64db6 | 843 | KeepTrack(nt); |
844 | fNprimaries++; | |
642f15cf | 845 | } // PushTrack loop |
8d2cd130 | 846 | } |
847 | } else { | |
848 | nc = GenerateMB(); | |
849 | } // mb ? | |
f913ec4f | 850 | |
851 | GetSubEventTime(); | |
8d2cd130 | 852 | |
234f6d32 | 853 | delete[] pParent; |
854 | delete[] pSelected; | |
855 | delete[] trackIt; | |
8d2cd130 | 856 | |
857 | if (nc > 0) { | |
858 | switch (fCountMode) { | |
859 | case kCountAll: | |
860 | // printf(" Count all \n"); | |
861 | jev += nc; | |
862 | break; | |
863 | case kCountParents: | |
864 | // printf(" Count parents \n"); | |
865 | jev += nParents; | |
866 | break; | |
867 | case kCountTrackables: | |
868 | // printf(" Count trackable \n"); | |
869 | jev += nTkbles; | |
870 | break; | |
871 | } | |
872 | if (jev >= fNpart || fNpart == -1) { | |
873 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
e0e89f40 | 874 | |
8d2cd130 | 875 | fQ += fPythia->GetVINT(51); |
876 | fX1 += fPythia->GetVINT(41); | |
877 | fX2 += fPythia->GetVINT(42); | |
878 | fTrialsRun += fTrials; | |
879 | fNev++; | |
880 | MakeHeader(); | |
881 | break; | |
882 | } | |
883 | } | |
884 | } // event loop | |
885 | SetHighWaterMark(nt); | |
886 | // adjust weight due to kinematic selection | |
b88f5cea | 887 | // AdjustWeights(); |
8d2cd130 | 888 | // get cross-section |
889 | fXsection=fPythia->GetPARI(1); | |
890 | } | |
891 | ||
892 | Int_t AliGenPythia::GenerateMB() | |
893 | { | |
894 | // | |
895 | // Min Bias selection and other global selections | |
896 | // | |
897 | Int_t i, kf, nt, iparent; | |
898 | Int_t nc = 0; | |
13cca24a | 899 | Double_t p[4]; |
900 | Double_t polar[3] = {0,0,0}; | |
901 | Double_t origin[3] = {0,0,0}; | |
8d2cd130 | 902 | // converts from mm/c to s |
903 | const Float_t kconv=0.001/2.999792458e8; | |
904 | ||
e0e89f40 | 905 | |
906 | ||
8507138f | 907 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
aea21c57 | 908 | |
5fa4b20b | 909 | |
e0e89f40 | 910 | |
8d2cd130 | 911 | Int_t* pParent = new Int_t[np]; |
912 | for (i=0; i< np; i++) pParent[i] = -1; | |
2f405d65 | 913 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets || fProcess == kPyBeautyppMNRwmi) { |
8507138f | 914 | TParticle* jet1 = (TParticle *) fParticles.At(6); |
915 | TParticle* jet2 = (TParticle *) fParticles.At(7); | |
234f6d32 | 916 | if (!CheckTrigger(jet1, jet2)) { |
917 | delete [] pParent; | |
918 | return 0; | |
919 | } | |
8d2cd130 | 920 | } |
e0e89f40 | 921 | |
9fd8e520 | 922 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL |
923 | if (fProcess == kPyJets && (fFragPhotonInCalo || fPi0InCalo) ) { | |
ec2c406e | 924 | |
925 | Bool_t ok = kFALSE; | |
926 | ||
927 | Int_t pdg = 0; | |
9fd8e520 | 928 | if (fFragPhotonInCalo) pdg = 22 ; // Photon |
6d2ec66d | 929 | else if (fPi0InCalo) pdg = 111 ; // Pi0 |
ec2c406e | 930 | |
931 | for (i=0; i< np; i++) { | |
8507138f | 932 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
ec2c406e | 933 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && |
9fd8e520 | 934 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ |
562cbbcf | 935 | Int_t imother = iparticle->GetFirstMother() - 1; |
8507138f | 936 | TParticle* pmother = (TParticle *) fParticles.At(imother); |
9fd8e520 | 937 | if(pdg == 111 || |
82e0bdff | 938 | (pdg == 22 && pmother->GetStatusCode() != 11)) //No photon from hadron decay |
9fd8e520 | 939 | { |
940 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
82e0bdff | 941 | Float_t eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax |
9fd8e520 | 942 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || |
943 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
944 | ok =kTRUE; | |
945 | } | |
ec2c406e | 946 | } |
947 | } | |
1ee02229 | 948 | if(!ok) { |
949 | delete[] pParent; | |
950 | return 0; | |
951 | } | |
ec2c406e | 952 | } |
9dfe63b3 | 953 | |
954 | // Select beauty jets with electron in EMCAL | |
955 | if (fProcess == kPyBeautyJets && fEleInEMCAL) { | |
956 | ||
957 | Bool_t ok = kFALSE; | |
958 | ||
959 | Int_t pdg = 11; //electron | |
960 | ||
70574ff8 | 961 | Float_t pt = 0.; |
962 | Float_t eta = 0.; | |
963 | Float_t phi = 0.; | |
9dfe63b3 | 964 | for (i=0; i< np; i++) { |
965 | TParticle* iparticle = (TParticle *) fParticles.At(i); | |
966 | if(iparticle->GetStatusCode()==1 && TMath::Abs(iparticle->GetPdgCode())==pdg && | |
967 | iparticle->Pt() > fElectronMinPt){ | |
968 | pt = iparticle->Pt(); | |
969 | phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
970 | eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax | |
971 | if(IsInEMCAL(phi,eta)) | |
972 | ok =kTRUE; | |
973 | } | |
974 | } | |
92847124 | 975 | if(!ok) { |
976 | delete[] pParent; | |
9dfe63b3 | 977 | return 0; |
92847124 | 978 | } |
979 | ||
9dfe63b3 | 980 | AliDebug(5,Form("Found an electron jet (pt,eta,phi) = (%f,%f,%f)",pt,eta,phi)); |
981 | } | |
700b9416 | 982 | // Check for minimum multiplicity |
983 | if (fTriggerMultiplicity > 0) { | |
984 | Int_t multiplicity = 0; | |
985 | for (i = 0; i < np; i++) { | |
8507138f | 986 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
700b9416 | 987 | |
988 | Int_t statusCode = iparticle->GetStatusCode(); | |
989 | ||
990 | // Initial state particle | |
e296848e | 991 | if (statusCode != 1) |
700b9416 | 992 | continue; |
38112f3f | 993 | // eta cut |
700b9416 | 994 | if (fTriggerMultiplicityEta > 0 && TMath::Abs(iparticle->Eta()) > fTriggerMultiplicityEta) |
995 | continue; | |
38112f3f | 996 | // pt cut |
997 | if (iparticle->Pt() < fTriggerMultiplicityPtMin) | |
998 | continue; | |
999 | ||
700b9416 | 1000 | TParticlePDG* pdgPart = iparticle->GetPDG(); |
1001 | if (pdgPart && pdgPart->Charge() == 0) | |
1002 | continue; | |
1003 | ||
1004 | ++multiplicity; | |
1005 | } | |
1006 | ||
1007 | if (multiplicity < fTriggerMultiplicity) { | |
1008 | delete [] pParent; | |
1009 | return 0; | |
1010 | } | |
38112f3f | 1011 | Printf("Triggered on event with multiplicity of %d >= %d", multiplicity, fTriggerMultiplicity); |
700b9416 | 1012 | } |
90a236ce | 1013 | |
1014 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
1015 | if ((fProcess == kPyJets || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ | |
1016 | ||
1017 | Bool_t okd = kFALSE; | |
1018 | ||
1019 | Int_t pdg = 22; | |
1020 | Int_t iphcand = -1; | |
1021 | for (i=0; i< np; i++) { | |
8507138f | 1022 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1023 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees |
1024 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
1025 | ||
1026 | if(iparticle->GetStatusCode() == 1 | |
1027 | && iparticle->GetPdgCode() == pdg | |
1028 | && iparticle->Pt() > fPhotonMinPt | |
04a26b0a | 1029 | && eta < fPHOSEta){ |
90a236ce | 1030 | |
1031 | // first check if the photon is in PHOS phi | |
1032 | if(IsInPHOS(phi,eta)){ | |
1033 | okd = kTRUE; | |
1034 | break; | |
1035 | } | |
1036 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
1037 | ||
1038 | } | |
1039 | } | |
1040 | ||
1041 | if(!okd && iphcand != -1) // execute rotation in phi | |
1042 | RotatePhi(iphcand,okd); | |
1043 | ||
b3305127 | 1044 | if(!okd) { |
1045 | delete [] pParent; | |
1046 | return 0; | |
1047 | } | |
90a236ce | 1048 | } |
1049 | ||
7ce1321b | 1050 | if (fTriggerParticle) { |
1051 | Bool_t triggered = kFALSE; | |
1052 | for (i = 0; i < np; i++) { | |
8507138f | 1053 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
7ce1321b | 1054 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
38db0ee6 | 1055 | if (kf != fTriggerParticle) continue; |
7ce1321b | 1056 | if (iparticle->Pt() == 0.) continue; |
1057 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
1058 | triggered = kTRUE; | |
1059 | break; | |
1060 | } | |
234f6d32 | 1061 | if (!triggered) { |
1062 | delete [] pParent; | |
1063 | return 0; | |
1064 | } | |
7ce1321b | 1065 | } |
e0e89f40 | 1066 | |
1067 | ||
1068 | // Check if there is a ccbar or bbbar pair with at least one of the two | |
1069 | // in fYMin < y < fYMax | |
2f405d65 | 1070 | |
9dfe63b3 | 1071 | if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi || fProcess == kPyBeautyJets) { |
9ccc3d0e | 1072 | TParticle *partCheck; |
1073 | TParticle *mother; | |
e0e89f40 | 1074 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; |
9ccc3d0e | 1075 | Bool_t theChild=kFALSE; |
5d76923e | 1076 | Bool_t triggered=kFALSE; |
9ccc3d0e | 1077 | Float_t y; |
1078 | Int_t pdg,mpdg,mpdgUpperFamily; | |
e0e89f40 | 1079 | for(i=0; i<np; i++) { |
9ccc3d0e | 1080 | partCheck = (TParticle*)fParticles.At(i); |
1081 | pdg = partCheck->GetPdgCode(); | |
1082 | if(TMath::Abs(pdg) == fFlavorSelect) { // quark | |
1083 | if(pdg>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
1084 | y = 0.5*TMath::Log((partCheck->Energy()+partCheck->Pz()+1.e-13)/ | |
1085 | (partCheck->Energy()-partCheck->Pz()+1.e-13)); | |
1086 | if(y>fYMin && y<fYMax) inYcut=kTRUE; | |
1087 | } | |
5d76923e | 1088 | if(fTriggerParticle) { |
1089 | if(TMath::Abs(pdg)==fTriggerParticle) triggered=kTRUE; | |
1090 | } | |
9ccc3d0e | 1091 | if(fCutOnChild && TMath::Abs(pdg) == fPdgCodeParticleforAcceptanceCut) { |
1092 | Int_t mi = partCheck->GetFirstMother() - 1; | |
1093 | if(mi<0) continue; | |
1094 | mother = (TParticle*)fParticles.At(mi); | |
1095 | mpdg=TMath::Abs(mother->GetPdgCode()); | |
75fde694 | 1096 | mpdgUpperFamily=(mpdg>1000 ? mpdg+1000 : mpdg+100); // keep e from c from b |
9ccc3d0e | 1097 | if ( ParentSelected(mpdg) || |
1098 | (fFlavorSelect==5 && ParentSelected(mpdgUpperFamily))) { | |
1099 | if (KinematicSelection(partCheck,1)) { | |
1100 | theChild=kTRUE; | |
1101 | } | |
1102 | } | |
1103 | } | |
e0e89f40 | 1104 | } |
9ccc3d0e | 1105 | if (!theQ || !theQbar || !inYcut) { // one of the c/b conditions not satisfied |
234f6d32 | 1106 | delete[] pParent; |
e0e89f40 | 1107 | return 0; |
1108 | } | |
9ccc3d0e | 1109 | if (fCutOnChild && !theChild) { // one of the child conditions not satisfied |
1110 | delete[] pParent; | |
1111 | return 0; | |
1112 | } | |
5d76923e | 1113 | if(fTriggerParticle && !triggered) { // particle requested is not produced |
1114 | delete[] pParent; | |
1115 | return 0; | |
1116 | } | |
9ccc3d0e | 1117 | |
e0e89f40 | 1118 | } |
aea21c57 | 1119 | |
0f6ee828 | 1120 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff |
f529e69b | 1121 | if ( (fProcess == kPyW || |
1122 | fProcess == kPyZ || | |
1123 | fProcess == kPyMbDefault || | |
1124 | fProcess == kPyMb || | |
6d2ec66d | 1125 | fProcess == kPyMbAtlasTuneMC09 || |
04081a91 | 1126 | fProcess == kPyMbWithDirectPhoton || |
f529e69b | 1127 | fProcess == kPyMbNonDiffr) |
0f6ee828 | 1128 | && (fCutOnChild == 1) ) { |
1129 | if ( !CheckKinematicsOnChild() ) { | |
234f6d32 | 1130 | delete[] pParent; |
0f6ee828 | 1131 | return 0; |
1132 | } | |
aea21c57 | 1133 | } |
1134 | ||
1135 | ||
f913ec4f | 1136 | for (i = 0; i < np; i++) { |
8d2cd130 | 1137 | Int_t trackIt = 0; |
8507138f | 1138 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 1139 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
1140 | Int_t ks = iparticle->GetStatusCode(); | |
1141 | Int_t km = iparticle->GetFirstMother(); | |
1142 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
1143 | (ks != 1) || | |
9dfe63b3 | 1144 | ((fProcess == kPyJets || fProcess == kPyBeautyJets) && ks == 21 && km == 0 && i>1)) { |
8d2cd130 | 1145 | nc++; |
1146 | if (ks == 1) trackIt = 1; | |
1147 | Int_t ipa = iparticle->GetFirstMother()-1; | |
1148 | ||
1149 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
1150 | ||
1151 | // | |
1152 | // store track information | |
1153 | p[0] = iparticle->Px(); | |
1154 | p[1] = iparticle->Py(); | |
1155 | p[2] = iparticle->Pz(); | |
a920faf9 | 1156 | p[3] = iparticle->Energy(); |
1406f599 | 1157 | |
a920faf9 | 1158 | |
2590ccf9 | 1159 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
1160 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
1161 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
1162 | ||
f913ec4f | 1163 | Float_t tof = fEventTime + kconv * iparticle->T(); |
a920faf9 | 1164 | |
1165 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
1166 | p[0], p[1], p[2], p[3], | |
1167 | origin[0], origin[1], origin[2], tof, | |
1168 | polar[0], polar[1], polar[2], | |
1169 | kPPrimary, nt, 1., ks); | |
dbd64db6 | 1170 | fNprimaries++; |
8d2cd130 | 1171 | KeepTrack(nt); |
1172 | pParent[i] = nt; | |
f913ec4f | 1173 | SetHighWaterMark(nt); |
1174 | ||
8d2cd130 | 1175 | } // select particle |
1176 | } // particle loop | |
1177 | ||
234f6d32 | 1178 | delete[] pParent; |
e0e89f40 | 1179 | |
f913ec4f | 1180 | return 1; |
8d2cd130 | 1181 | } |
1182 | ||
1183 | ||
1184 | void AliGenPythia::FinishRun() | |
1185 | { | |
1186 | // Print x-section summary | |
1187 | fPythia->Pystat(1); | |
2779fc64 | 1188 | |
1189 | if (fNev > 0.) { | |
1190 | fQ /= fNev; | |
1191 | fX1 /= fNev; | |
1192 | fX2 /= fNev; | |
1193 | } | |
1194 | ||
8d2cd130 | 1195 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); |
1196 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
8d2cd130 | 1197 | } |
1198 | ||
7184e472 | 1199 | void AliGenPythia::AdjustWeights() const |
8d2cd130 | 1200 | { |
1201 | // Adjust the weights after generation of all events | |
1202 | // | |
e2bddf81 | 1203 | if (gAlice) { |
1204 | TParticle *part; | |
1205 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1206 | for (Int_t i=0; i<ntrack; i++) { | |
1207 | part= gAlice->GetMCApp()->Particle(i); | |
1208 | part->SetWeight(part->GetWeight()*fKineBias); | |
1209 | } | |
8d2cd130 | 1210 | } |
1211 | } | |
1212 | ||
20e47f08 | 1213 | void AliGenPythia::SetNuclei(Int_t a1, Int_t a2, Int_t pdfset) |
8d2cd130 | 1214 | { |
1215 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1d568bc2 | 1216 | |
1a626d4e | 1217 | fAProjectile = a1; |
1218 | fATarget = a2; | |
20e47f08 | 1219 | fNucPdf = pdfset; // 0 EKS98 1 EPS08 |
1d568bc2 | 1220 | fSetNuclei = kTRUE; |
8d2cd130 | 1221 | } |
1222 | ||
1223 | ||
1224 | void AliGenPythia::MakeHeader() | |
1225 | { | |
7184e472 | 1226 | // |
1227 | // Make header for the simulated event | |
1228 | // | |
183a5ca9 | 1229 | if (gAlice) { |
1230 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
f913ec4f | 1231 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2); |
183a5ca9 | 1232 | } |
1233 | ||
8d2cd130 | 1234 | // Builds the event header, to be called after each event |
e5c87a3d | 1235 | if (fHeader) delete fHeader; |
1236 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
8d2cd130 | 1237 | // |
1238 | // Event type | |
e5c87a3d | 1239 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1)); |
8d2cd130 | 1240 | // |
1241 | // Number of trials | |
e5c87a3d | 1242 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); |
8d2cd130 | 1243 | // |
1244 | // Event Vertex | |
d25cfd65 | 1245 | fHeader->SetPrimaryVertex(fVertex); |
d07f0af2 | 1246 | fHeader->SetInteractionTime(fEventTime); |
dbd64db6 | 1247 | // |
1248 | // Number of primaries | |
1249 | fHeader->SetNProduced(fNprimaries); | |
8d2cd130 | 1250 | // |
1251 | // Jets that have triggered | |
f913ec4f | 1252 | |
9dfe63b3 | 1253 | //Need to store jets for b-jet studies too! |
2f405d65 | 1254 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets || fProcess == kPyBeautyppMNRwmi) |
8d2cd130 | 1255 | { |
1256 | Int_t ntrig, njet; | |
1257 | Float_t jets[4][10]; | |
1258 | GetJets(njet, ntrig, jets); | |
9ff6c04c | 1259 | |
8d2cd130 | 1260 | |
1261 | for (Int_t i = 0; i < ntrig; i++) { | |
e5c87a3d | 1262 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], |
8d2cd130 | 1263 | jets[3][i]); |
1264 | } | |
1265 | } | |
5fa4b20b | 1266 | // |
1267 | // Copy relevant information from external header, if present. | |
1268 | // | |
1269 | Float_t uqJet[4]; | |
1270 | ||
1271 | if (fRL) { | |
1272 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1273 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1274 | { | |
1275 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1276 | ||
1277 | ||
1278 | exHeader->TriggerJet(i, uqJet); | |
1279 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1280 | } | |
1281 | } | |
1282 | // | |
1283 | // Store quenching parameters | |
1284 | // | |
1285 | if (fQuench){ | |
b6262a45 | 1286 | Double_t z[4] = {0.}; |
1287 | Double_t xp = 0.; | |
1288 | Double_t yp = 0.; | |
1289 | ||
7c21f297 | 1290 | if (fQuench == 1) { |
1291 | // Pythia::Quench() | |
1292 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1bab4b79 | 1293 | } else if (fQuench == 2){ |
7c21f297 | 1294 | // Pyquen |
1295 | Double_t r1 = PARIMP.rb1; | |
1296 | Double_t r2 = PARIMP.rb2; | |
1297 | Double_t b = PARIMP.b1; | |
1298 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1299 | Double_t phi = PARIMP.psib1; | |
1300 | xp = r * TMath::Cos(phi); | |
1301 | yp = r * TMath::Sin(phi); | |
1302 | ||
1bab4b79 | 1303 | } else if (fQuench == 4) { |
1304 | // QPythia | |
5831e75f | 1305 | Double_t xy[2]; |
e9719084 | 1306 | Double_t i0i1[2]; |
1307 | AliFastGlauber::Instance()->GetSavedXY(xy); | |
1308 | AliFastGlauber::Instance()->GetSavedI0I1(i0i1); | |
5831e75f | 1309 | xp = xy[0]; |
1310 | yp = xy[1]; | |
e6fe9b82 | 1311 | ((AliGenPythiaEventHeader*) fHeader)->SetImpactParameter(fImpact); |
7c21f297 | 1312 | } |
1bab4b79 | 1313 | |
7c21f297 | 1314 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); |
1315 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1bab4b79 | 1316 | } |
beac474c | 1317 | // |
1318 | // Store pt^hard | |
1319 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47)); | |
5fa4b20b | 1320 | // |
cf57b268 | 1321 | // Pass header |
5fa4b20b | 1322 | // |
cf57b268 | 1323 | AddHeader(fHeader); |
4c4eac97 | 1324 | fHeader = 0x0; |
8d2cd130 | 1325 | } |
cf57b268 | 1326 | |
c2fc9d31 | 1327 | Bool_t AliGenPythia::CheckTrigger(const TParticle* jet1, const TParticle* jet2) |
8d2cd130 | 1328 | { |
1329 | // Check the kinematic trigger condition | |
1330 | // | |
1331 | Double_t eta[2]; | |
1332 | eta[0] = jet1->Eta(); | |
1333 | eta[1] = jet2->Eta(); | |
1334 | Double_t phi[2]; | |
1335 | phi[0] = jet1->Phi(); | |
1336 | phi[1] = jet2->Phi(); | |
1337 | Int_t pdg[2]; | |
1338 | pdg[0] = jet1->GetPdgCode(); | |
1339 | pdg[1] = jet2->GetPdgCode(); | |
1340 | Bool_t triggered = kFALSE; | |
1341 | ||
2f405d65 | 1342 | if (fProcess == kPyJets || fProcess == kPyBeautyJets || fProcess == kPyBeautyppMNRwmi) { |
8d2cd130 | 1343 | Int_t njets = 0; |
1344 | Int_t ntrig = 0; | |
1345 | Float_t jets[4][10]; | |
1346 | // | |
1347 | // Use Pythia clustering on parton level to determine jet axis | |
1348 | // | |
1349 | GetJets(njets, ntrig, jets); | |
1350 | ||
76d6ba9a | 1351 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; |
8d2cd130 | 1352 | // |
1353 | } else { | |
1354 | Int_t ij = 0; | |
1355 | Int_t ig = 1; | |
1356 | if (pdg[0] == kGamma) { | |
1357 | ij = 1; | |
1358 | ig = 0; | |
1359 | } | |
1360 | //Check eta range first... | |
1361 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1362 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1363 | { | |
1364 | //Eta is okay, now check phi range | |
1365 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1366 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1367 | { | |
1368 | triggered = kTRUE; | |
1369 | } | |
1370 | } | |
1371 | } | |
1372 | return triggered; | |
1373 | } | |
aea21c57 | 1374 | |
1375 | ||
aea21c57 | 1376 | |
7184e472 | 1377 | Bool_t AliGenPythia::CheckKinematicsOnChild(){ |
1378 | // | |
1379 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1380 | // | |
aea21c57 | 1381 | Bool_t checking = kFALSE; |
1382 | Int_t j, kcode, ks, km; | |
1383 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1384 | Int_t numberOfAcceptedParticles = 1; | |
1385 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
8507138f | 1386 | Int_t npart = fParticles.GetEntriesFast(); |
aea21c57 | 1387 | |
0f6ee828 | 1388 | for (j = 0; j<npart; j++) { |
8507138f | 1389 | TParticle * jparticle = (TParticle *) fParticles.At(j); |
aea21c57 | 1390 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
1391 | ks = jparticle->GetStatusCode(); | |
1392 | km = jparticle->GetFirstMother(); | |
1393 | ||
1394 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1395 | nPartAcc++; | |
1396 | } | |
0f6ee828 | 1397 | if( numberOfAcceptedParticles <= nPartAcc){ |
1398 | checking = kTRUE; | |
1399 | break; | |
1400 | } | |
aea21c57 | 1401 | } |
0f6ee828 | 1402 | |
aea21c57 | 1403 | return checking; |
aea21c57 | 1404 | } |
1405 | ||
5fa4b20b | 1406 | void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr) |
8d2cd130 | 1407 | { |
1058d9df | 1408 | // |
1409 | // Load event into Pythia Common Block | |
1410 | // | |
1411 | ||
1412 | Int_t npart = stack -> GetNprimary(); | |
1413 | Int_t n0 = 0; | |
1414 | ||
1415 | if (!flag) { | |
1416 | (fPythia->GetPyjets())->N = npart; | |
1417 | } else { | |
1418 | n0 = (fPythia->GetPyjets())->N; | |
1419 | (fPythia->GetPyjets())->N = n0 + npart; | |
1420 | } | |
1421 | ||
1422 | ||
1423 | for (Int_t part = 0; part < npart; part++) { | |
1424 | TParticle *mPart = stack->Particle(part); | |
32d6ef7d | 1425 | |
1058d9df | 1426 | Int_t kf = mPart->GetPdgCode(); |
1427 | Int_t ks = mPart->GetStatusCode(); | |
1428 | Int_t idf = mPart->GetFirstDaughter(); | |
1429 | Int_t idl = mPart->GetLastDaughter(); | |
1430 | ||
1431 | if (reHadr) { | |
1432 | if (ks == 11 || ks == 12) { | |
1433 | ks -= 10; | |
1434 | idf = -1; | |
1435 | idl = -1; | |
1436 | } | |
32d6ef7d | 1437 | } |
1438 | ||
1058d9df | 1439 | Float_t px = mPart->Px(); |
1440 | Float_t py = mPart->Py(); | |
1441 | Float_t pz = mPart->Pz(); | |
1442 | Float_t e = mPart->Energy(); | |
1443 | Float_t m = mPart->GetCalcMass(); | |
32d6ef7d | 1444 | |
1058d9df | 1445 | |
1446 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1447 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1448 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1449 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1450 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1451 | ||
1452 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1453 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1454 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1455 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1456 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1457 | } | |
1458 | } | |
1459 | ||
c2fc9d31 | 1460 | void AliGenPythia::LoadEvent(const TObjArray* stack, Int_t flag, Int_t reHadr) |
1058d9df | 1461 | { |
1462 | // | |
1463 | // Load event into Pythia Common Block | |
1464 | // | |
1465 | ||
1466 | Int_t npart = stack -> GetEntries(); | |
1467 | Int_t n0 = 0; | |
1468 | ||
1469 | if (!flag) { | |
1470 | (fPythia->GetPyjets())->N = npart; | |
1471 | } else { | |
1472 | n0 = (fPythia->GetPyjets())->N; | |
1473 | (fPythia->GetPyjets())->N = n0 + npart; | |
1474 | } | |
1475 | ||
1476 | ||
1477 | for (Int_t part = 0; part < npart; part++) { | |
1478 | TParticle *mPart = dynamic_cast<TParticle *>(stack->At(part)); | |
92847124 | 1479 | if (!mPart) continue; |
1480 | ||
1058d9df | 1481 | Int_t kf = mPart->GetPdgCode(); |
1482 | Int_t ks = mPart->GetStatusCode(); | |
1483 | Int_t idf = mPart->GetFirstDaughter(); | |
1484 | Int_t idl = mPart->GetLastDaughter(); | |
1485 | ||
1486 | if (reHadr) { | |
92847124 | 1487 | if (ks == 11 || ks == 12) { |
1488 | ks -= 10; | |
1489 | idf = -1; | |
1490 | idl = -1; | |
1491 | } | |
8d2cd130 | 1492 | } |
1058d9df | 1493 | |
1494 | Float_t px = mPart->Px(); | |
1495 | Float_t py = mPart->Py(); | |
1496 | Float_t pz = mPart->Pz(); | |
1497 | Float_t e = mPart->Energy(); | |
1498 | Float_t m = mPart->GetCalcMass(); | |
1499 | ||
1500 | ||
1501 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1502 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1503 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1504 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1505 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1506 | ||
1507 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1508 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1509 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1510 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1511 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1512 | } | |
8d2cd130 | 1513 | } |
1514 | ||
5fa4b20b | 1515 | |
014a9521 | 1516 | void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) |
8d2cd130 | 1517 | { |
1518 | // | |
1519 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1520 | // | |
1521 | // | |
8d2cd130 | 1522 | // |
1523 | // Save jets | |
1524 | Int_t n = fPythia->GetN(); | |
1525 | ||
1526 | // | |
1527 | // Run Jet Finder | |
1528 | fPythia->Pycell(njets); | |
1529 | Int_t i; | |
1530 | for (i = 0; i < njets; i++) { | |
1531 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1532 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1533 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1534 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1535 | ||
1536 | jets[0][i] = px; | |
1537 | jets[1][i] = py; | |
1538 | jets[2][i] = pz; | |
1539 | jets[3][i] = e; | |
1540 | } | |
1541 | } | |
1542 | ||
1543 | ||
1544 | ||
1545 | void AliGenPythia::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1546 | { | |
1547 | // | |
1548 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1549 | // | |
1550 | Int_t n = fPythia->GetN(); | |
1551 | nJets = 0; | |
1552 | nJetsTrig = 0; | |
1553 | if (fJetReconstruction == kCluster) { | |
1554 | // | |
1555 | // Configure cluster algorithm | |
1556 | // | |
1557 | fPythia->SetPARU(43, 2.); | |
1558 | fPythia->SetMSTU(41, 1); | |
1559 | // | |
1560 | // Call cluster algorithm | |
1561 | // | |
1562 | fPythia->Pyclus(nJets); | |
1563 | // | |
1564 | // Loading jets from common block | |
1565 | // | |
1566 | } else { | |
592f8307 | 1567 | |
8d2cd130 | 1568 | // |
1569 | // Run Jet Finder | |
1570 | fPythia->Pycell(nJets); | |
1571 | } | |
1572 | ||
1573 | Int_t i; | |
1574 | for (i = 0; i < nJets; i++) { | |
1575 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1576 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1577 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1578 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1579 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
a920faf9 | 1580 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); |
8d2cd130 | 1581 | Float_t theta = TMath::ATan2(pt,pz); |
1582 | Float_t et = e * TMath::Sin(theta); | |
1583 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
8d2cd130 | 1584 | if ( |
1585 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
675eb105 | 1586 | phi > fPhiMinJet && phi < fPhiMaxJet && |
8d2cd130 | 1587 | et > fEtMinJet && et < fEtMaxJet |
1588 | ) | |
1589 | { | |
1590 | jets[0][nJetsTrig] = px; | |
1591 | jets[1][nJetsTrig] = py; | |
1592 | jets[2][nJetsTrig] = pz; | |
1593 | jets[3][nJetsTrig] = e; | |
1594 | nJetsTrig++; | |
5fa4b20b | 1595 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
8d2cd130 | 1596 | } else { |
1597 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); | |
1598 | } | |
1599 | } | |
1600 | } | |
1601 | ||
f913ec4f | 1602 | void AliGenPythia::GetSubEventTime() |
1603 | { | |
1604 | // Calculates time of the next subevent | |
9d7108a7 | 1605 | fEventTime = 0.; |
1606 | if (fEventsTime) { | |
1607 | TArrayF &array = *fEventsTime; | |
1608 | fEventTime = array[fCurSubEvent++]; | |
1609 | } | |
1610 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1611 | return; | |
f913ec4f | 1612 | } |
8d2cd130 | 1613 | |
c2fc9d31 | 1614 | Bool_t AliGenPythia::IsInEMCAL(Float_t phi, Float_t eta) const |
ec2c406e | 1615 | { |
1616 | // Is particle in EMCAL acceptance? | |
ec2c406e | 1617 | // phi in degrees, etamin=-etamax |
9fd8e520 | 1618 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && |
1619 | eta < fEMCALEta ) | |
ec2c406e | 1620 | return kTRUE; |
1621 | else | |
1622 | return kFALSE; | |
1623 | } | |
1624 | ||
c2fc9d31 | 1625 | Bool_t AliGenPythia::IsInPHOS(Float_t phi, Float_t eta) const |
ec2c406e | 1626 | { |
1627 | // Is particle in PHOS acceptance? | |
1628 | // Acceptance slightly larger considered. | |
1629 | // phi in degrees, etamin=-etamax | |
9fd8e520 | 1630 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && |
1631 | eta < fPHOSEta ) | |
ec2c406e | 1632 | return kTRUE; |
1633 | else | |
1634 | return kFALSE; | |
1635 | } | |
1636 | ||
90a236ce | 1637 | void AliGenPythia::RotatePhi(Int_t iphcand, Bool_t& okdd) |
1638 | { | |
1639 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1640 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1641 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1642 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1643 | ||
1644 | //calculate deltaphi | |
8507138f | 1645 | TParticle* ph = (TParticle *) fParticles.At(iphcand); |
90a236ce | 1646 | Double_t phphi = ph->Phi(); |
1647 | Double_t deltaphi = phiPHOS - phphi; | |
1648 | ||
1649 | ||
1650 | ||
1651 | //loop for all particles and produce the phi rotation | |
8507138f | 1652 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
90a236ce | 1653 | Double_t oldphi, newphi; |
777e69b0 | 1654 | Double_t newVx, newVy, r, vZ, time; |
1655 | Double_t newPx, newPy, pt, pz, e; | |
90a236ce | 1656 | for(Int_t i=0; i< np; i++) { |
8507138f | 1657 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1658 | oldphi = iparticle->Phi(); |
1659 | newphi = oldphi + deltaphi; | |
1660 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1661 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1662 | ||
777e69b0 | 1663 | r = iparticle->R(); |
1664 | newVx = r * TMath::Cos(newphi); | |
1665 | newVy = r * TMath::Sin(newphi); | |
1666 | vZ = iparticle->Vz(); // don't transform | |
90a236ce | 1667 | time = iparticle->T(); // don't transform |
1668 | ||
1669 | pt = iparticle->Pt(); | |
777e69b0 | 1670 | newPx = pt * TMath::Cos(newphi); |
1671 | newPy = pt * TMath::Sin(newphi); | |
1672 | pz = iparticle->Pz(); // don't transform | |
1673 | e = iparticle->Energy(); // don't transform | |
90a236ce | 1674 | |
1675 | // apply rotation | |
777e69b0 | 1676 | iparticle->SetProductionVertex(newVx, newVy, vZ, time); |
1677 | iparticle->SetMomentum(newPx, newPy, pz, e); | |
90a236ce | 1678 | |
1679 | } //end particle loop | |
1680 | ||
1681 | // now let's check that we put correctly the candidate photon in PHOS | |
1682 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1683 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1684 | if(IsInPHOS(phi,eta)) | |
1685 | okdd = kTRUE; | |
1686 | } | |
ec2c406e | 1687 | |
1688 | ||
589380c6 | 1689 |