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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" |
e2d34d35 | 47 | #include "PyquenCommon.h" |
8d2cd130 | 48 | |
014a9521 | 49 | ClassImp(AliGenPythia) |
8d2cd130 | 50 | |
e8a8adcd | 51 | |
52 | AliGenPythia::AliGenPythia(): | |
53 | AliGenMC(), | |
54 | fProcess(kPyCharm), | |
efe3b1cd | 55 | fItune(-1), |
e8a8adcd | 56 | fStrucFunc(kCTEQ5L), |
e8a8adcd | 57 | fKineBias(0.), |
58 | fTrials(0), | |
59 | fTrialsRun(0), | |
60 | fQ(0.), | |
61 | fX1(0.), | |
62 | fX2(0.), | |
63 | fEventTime(0.), | |
64 | fInteractionRate(0.), | |
65 | fTimeWindow(0.), | |
66 | fCurSubEvent(0), | |
67 | fEventsTime(0), | |
68 | fNev(0), | |
69 | fFlavorSelect(0), | |
70 | fXsection(0.), | |
71 | fPythia(0), | |
72 | fPtHardMin(0.), | |
73 | fPtHardMax(1.e4), | |
74 | fYHardMin(-1.e10), | |
75 | fYHardMax(1.e10), | |
76 | fGinit(1), | |
77 | fGfinal(1), | |
78 | fHadronisation(1), | |
79 | fNpartons(0), | |
80 | fReadFromFile(0), | |
81 | fQuench(0), | |
cd07c39b | 82 | fQhat(0.), |
83 | fLength(0.), | |
e6fe9b82 | 84 | fImpact(0.), |
e8a8adcd | 85 | fPtKick(1.), |
86 | fFullEvent(kTRUE), | |
87 | fDecayer(new AliDecayerPythia()), | |
88 | fDebugEventFirst(-1), | |
89 | fDebugEventLast(-1), | |
90 | fEtMinJet(0.), | |
91 | fEtMaxJet(1.e4), | |
92 | fEtaMinJet(-20.), | |
93 | fEtaMaxJet(20.), | |
94 | fPhiMinJet(0.), | |
95 | fPhiMaxJet(2.* TMath::Pi()), | |
96 | fJetReconstruction(kCell), | |
97 | fEtaMinGamma(-20.), | |
98 | fEtaMaxGamma(20.), | |
99 | fPhiMinGamma(0.), | |
100 | fPhiMaxGamma(2. * TMath::Pi()), | |
101 | fPycellEtaMax(2.), | |
102 | fPycellNEta(274), | |
103 | fPycellNPhi(432), | |
104 | fPycellThreshold(0.), | |
105 | fPycellEtSeed(4.), | |
106 | fPycellMinEtJet(10.), | |
107 | fPycellMaxRadius(1.), | |
108 | fStackFillOpt(kFlavorSelection), | |
109 | fFeedDownOpt(kTRUE), | |
110 | fFragmentation(kTRUE), | |
111 | fSetNuclei(kFALSE), | |
112 | fNewMIS(kFALSE), | |
113 | fHFoff(kFALSE), | |
20e47f08 | 114 | fNucPdf(0), |
e8a8adcd | 115 | fTriggerParticle(0), |
116 | fTriggerEta(0.9), | |
700b9416 | 117 | fTriggerMultiplicity(0), |
118 | fTriggerMultiplicityEta(0), | |
e8a8adcd | 119 | fCountMode(kCountAll), |
120 | fHeader(0), | |
121 | fRL(0), | |
ec2c406e | 122 | fFileName(0), |
9fd8e520 | 123 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 124 | fPi0InCalo(kFALSE) , |
90a236ce | 125 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 126 | fEleInEMCAL(kFALSE), |
9fd8e520 | 127 | fCheckEMCAL(kFALSE), |
128 | fCheckPHOS(kFALSE), | |
90a236ce | 129 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 130 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 131 | fPhotonMinPt(0), |
9dfe63b3 | 132 | fElectronMinPt(0), |
9fd8e520 | 133 | fPHOSMinPhi(219.), |
134 | fPHOSMaxPhi(321.), | |
135 | fPHOSEta(0.13), | |
136 | fEMCALMinPhi(79.), | |
137 | fEMCALMaxPhi(191.), | |
138 | fEMCALEta(0.71) | |
ec2c406e | 139 | |
8d2cd130 | 140 | { |
141 | // Default Constructor | |
e7c989e4 | 142 | fEnergyCMS = 5500.; |
2d9f9817 | 143 | SetNuclei(0,0); |
7cdba479 | 144 | if (!AliPythiaRndm::GetPythiaRandom()) |
e8a8adcd | 145 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 | 146 | } |
147 | ||
148 | AliGenPythia::AliGenPythia(Int_t npart) | |
e8a8adcd | 149 | :AliGenMC(npart), |
150 | fProcess(kPyCharm), | |
efe3b1cd | 151 | fItune(-1), |
e8a8adcd | 152 | fStrucFunc(kCTEQ5L), |
e8a8adcd | 153 | fKineBias(0.), |
154 | fTrials(0), | |
155 | fTrialsRun(0), | |
156 | fQ(0.), | |
157 | fX1(0.), | |
158 | fX2(0.), | |
159 | fEventTime(0.), | |
160 | fInteractionRate(0.), | |
161 | fTimeWindow(0.), | |
162 | fCurSubEvent(0), | |
163 | fEventsTime(0), | |
164 | fNev(0), | |
165 | fFlavorSelect(0), | |
166 | fXsection(0.), | |
167 | fPythia(0), | |
168 | fPtHardMin(0.), | |
169 | fPtHardMax(1.e4), | |
170 | fYHardMin(-1.e10), | |
171 | fYHardMax(1.e10), | |
172 | fGinit(kTRUE), | |
173 | fGfinal(kTRUE), | |
174 | fHadronisation(kTRUE), | |
175 | fNpartons(0), | |
176 | fReadFromFile(kFALSE), | |
177 | fQuench(kFALSE), | |
cd07c39b | 178 | fQhat(0.), |
179 | fLength(0.), | |
e6fe9b82 | 180 | fImpact(0.), |
e8a8adcd | 181 | fPtKick(1.), |
182 | fFullEvent(kTRUE), | |
183 | fDecayer(new AliDecayerPythia()), | |
184 | fDebugEventFirst(-1), | |
185 | fDebugEventLast(-1), | |
186 | fEtMinJet(0.), | |
187 | fEtMaxJet(1.e4), | |
188 | fEtaMinJet(-20.), | |
189 | fEtaMaxJet(20.), | |
190 | fPhiMinJet(0.), | |
191 | fPhiMaxJet(2.* TMath::Pi()), | |
192 | fJetReconstruction(kCell), | |
193 | fEtaMinGamma(-20.), | |
194 | fEtaMaxGamma(20.), | |
195 | fPhiMinGamma(0.), | |
196 | fPhiMaxGamma(2. * TMath::Pi()), | |
197 | fPycellEtaMax(2.), | |
198 | fPycellNEta(274), | |
199 | fPycellNPhi(432), | |
200 | fPycellThreshold(0.), | |
201 | fPycellEtSeed(4.), | |
202 | fPycellMinEtJet(10.), | |
203 | fPycellMaxRadius(1.), | |
204 | fStackFillOpt(kFlavorSelection), | |
205 | fFeedDownOpt(kTRUE), | |
206 | fFragmentation(kTRUE), | |
207 | fSetNuclei(kFALSE), | |
208 | fNewMIS(kFALSE), | |
209 | fHFoff(kFALSE), | |
20e47f08 | 210 | fNucPdf(0), |
e8a8adcd | 211 | fTriggerParticle(0), |
212 | fTriggerEta(0.9), | |
700b9416 | 213 | fTriggerMultiplicity(0), |
214 | fTriggerMultiplicityEta(0), | |
e8a8adcd | 215 | fCountMode(kCountAll), |
216 | fHeader(0), | |
217 | fRL(0), | |
ec2c406e | 218 | fFileName(0), |
9fd8e520 | 219 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 220 | fPi0InCalo(kFALSE) , |
90a236ce | 221 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 222 | fEleInEMCAL(kFALSE), |
9fd8e520 | 223 | fCheckEMCAL(kFALSE), |
224 | fCheckPHOS(kFALSE), | |
90a236ce | 225 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 226 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 227 | fPhotonMinPt(0), |
9dfe63b3 | 228 | fElectronMinPt(0), |
9fd8e520 | 229 | fPHOSMinPhi(219.), |
230 | fPHOSMaxPhi(321.), | |
231 | fPHOSEta(0.13), | |
232 | fEMCALMinPhi(79.), | |
233 | fEMCALMaxPhi(191.), | |
234 | fEMCALEta(0.71) | |
8d2cd130 | 235 | { |
236 | // default charm production at 5. 5 TeV | |
237 | // semimuonic decay | |
238 | // structure function GRVHO | |
239 | // | |
e7c989e4 | 240 | fEnergyCMS = 5500.; |
8d2cd130 | 241 | fName = "Pythia"; |
242 | fTitle= "Particle Generator using PYTHIA"; | |
8d2cd130 | 243 | SetForceDecay(); |
8d2cd130 | 244 | // Set random number generator |
7cdba479 | 245 | if (!AliPythiaRndm::GetPythiaRandom()) |
246 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
2d9f9817 | 247 | SetNuclei(0,0); |
76d6ba9a | 248 | } |
8d2cd130 | 249 | |
8d2cd130 | 250 | AliGenPythia::~AliGenPythia() |
251 | { | |
252 | // Destructor | |
9d7108a7 | 253 | if(fEventsTime) delete fEventsTime; |
254 | } | |
255 | ||
256 | void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow) | |
257 | { | |
258 | // Generate pileup using user specified rate | |
259 | fInteractionRate = rate; | |
260 | fTimeWindow = timewindow; | |
261 | GeneratePileup(); | |
262 | } | |
263 | ||
264 | void AliGenPythia::GeneratePileup() | |
265 | { | |
266 | // Generate sub events time for pileup | |
267 | fEventsTime = 0; | |
268 | if(fInteractionRate == 0.) { | |
269 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); | |
270 | return; | |
271 | } | |
272 | ||
273 | Int_t npart = NumberParticles(); | |
274 | if(npart < 0) { | |
275 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); | |
276 | return; | |
277 | } | |
278 | ||
279 | if(fEventsTime) delete fEventsTime; | |
280 | fEventsTime = new TArrayF(npart); | |
281 | TArrayF &array = *fEventsTime; | |
282 | for(Int_t ipart = 0; ipart < npart; ipart++) | |
283 | array[ipart] = 0.; | |
284 | ||
285 | Float_t eventtime = 0.; | |
286 | while(1) | |
287 | { | |
288 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
289 | if(eventtime > fTimeWindow) break; | |
290 | array.Set(array.GetSize()+1); | |
291 | array[array.GetSize()-1] = eventtime; | |
292 | } | |
293 | ||
294 | eventtime = 0.; | |
295 | while(1) | |
296 | { | |
297 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
298 | if(TMath::Abs(eventtime) > fTimeWindow) break; | |
299 | array.Set(array.GetSize()+1); | |
300 | array[array.GetSize()-1] = eventtime; | |
301 | } | |
302 | ||
303 | SetNumberParticles(fEventsTime->GetSize()); | |
8d2cd130 | 304 | } |
305 | ||
592f8307 | 306 | void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, |
307 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) | |
308 | { | |
309 | // Set pycell parameters | |
310 | fPycellEtaMax = etamax; | |
311 | fPycellNEta = neta; | |
312 | fPycellNPhi = nphi; | |
313 | fPycellThreshold = thresh; | |
314 | fPycellEtSeed = etseed; | |
315 | fPycellMinEtJet = minet; | |
316 | fPycellMaxRadius = r; | |
317 | } | |
318 | ||
319 | ||
320 | ||
8d2cd130 | 321 | void AliGenPythia::SetEventListRange(Int_t eventFirst, Int_t eventLast) |
322 | { | |
323 | // Set a range of event numbers, for which a table | |
324 | // of generated particle will be printed | |
325 | fDebugEventFirst = eventFirst; | |
326 | fDebugEventLast = eventLast; | |
327 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; | |
328 | } | |
329 | ||
330 | void AliGenPythia::Init() | |
331 | { | |
332 | // Initialisation | |
333 | ||
334 | SetMC(AliPythia::Instance()); | |
b88f5cea | 335 | fPythia=(AliPythia*) fMCEvGen; |
e2bddf81 | 336 | |
8d2cd130 | 337 | // |
338 | fParentWeight=1./Float_t(fNpart); | |
339 | // | |
8d2cd130 | 340 | |
341 | ||
342 | fPythia->SetCKIN(3,fPtHardMin); | |
343 | fPythia->SetCKIN(4,fPtHardMax); | |
344 | fPythia->SetCKIN(7,fYHardMin); | |
345 | fPythia->SetCKIN(8,fYHardMax); | |
346 | ||
20e47f08 | 347 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget, fNucPdf); |
8d2cd130 | 348 | // Fragmentation? |
349 | if (fFragmentation) { | |
350 | fPythia->SetMSTP(111,1); | |
351 | } else { | |
352 | fPythia->SetMSTP(111,0); | |
353 | } | |
354 | ||
355 | ||
356 | // initial state radiation | |
357 | fPythia->SetMSTP(61,fGinit); | |
358 | // final state radiation | |
359 | fPythia->SetMSTP(71,fGfinal); | |
360 | // pt - kick | |
361 | if (fPtKick > 0.) { | |
362 | fPythia->SetMSTP(91,1); | |
688950ef | 363 | fPythia->SetPARP(91,fPtKick); |
364 | fPythia->SetPARP(93, 4. * fPtKick); | |
8d2cd130 | 365 | } else { |
366 | fPythia->SetMSTP(91,0); | |
367 | } | |
368 | ||
5fa4b20b | 369 | |
370 | if (fReadFromFile) { | |
371 | fRL = AliRunLoader::Open(fFileName, "Partons"); | |
372 | fRL->LoadKinematics(); | |
373 | fRL->LoadHeader(); | |
374 | } else { | |
375 | fRL = 0x0; | |
376 | } | |
fdea4387 | 377 | // |
efe3b1cd | 378 | fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc, fItune); |
fdea4387 | 379 | // Forward Paramters to the AliPythia object |
380 | fDecayer->SetForceDecay(fForceDecay); | |
beac474c | 381 | // Switch off Heavy Flavors on request |
382 | if (fHFoff) { | |
51387949 | 383 | // Maximum number of quark flavours used in pdf |
beac474c | 384 | fPythia->SetMSTP(58, 3); |
51387949 | 385 | // Maximum number of flavors that can be used in showers |
beac474c | 386 | fPythia->SetMSTJ(45, 3); |
51387949 | 387 | // Switch off g->QQbar splitting in decay table |
388 | ((AliDecayerPythia*) fDecayer)->HeavyFlavourOff(); | |
beac474c | 389 | } |
fdea4387 | 390 | |
51387949 | 391 | fDecayer->Init(); |
392 | ||
8d2cd130 | 393 | |
394 | // Parent and Children Selection | |
395 | switch (fProcess) | |
396 | { | |
65f2626c | 397 | case kPyOldUEQ2ordered: |
398 | case kPyOldUEQ2ordered2: | |
399 | case kPyOldPopcorn: | |
400 | break; | |
8d2cd130 | 401 | case kPyCharm: |
402 | case kPyCharmUnforced: | |
adf4d898 | 403 | case kPyCharmPbPbMNR: |
aabc7187 | 404 | case kPyCharmpPbMNR: |
e0e89f40 | 405 | case kPyCharmppMNR: |
406 | case kPyCharmppMNRwmi: | |
8d2cd130 | 407 | fParentSelect[0] = 411; |
408 | fParentSelect[1] = 421; | |
409 | fParentSelect[2] = 431; | |
410 | fParentSelect[3] = 4122; | |
9ccc3d0e | 411 | fParentSelect[4] = 4232; |
412 | fParentSelect[5] = 4132; | |
413 | fParentSelect[6] = 4332; | |
8d2cd130 | 414 | fFlavorSelect = 4; |
415 | break; | |
adf4d898 | 416 | case kPyD0PbPbMNR: |
417 | case kPyD0pPbMNR: | |
418 | case kPyD0ppMNR: | |
8d2cd130 | 419 | fParentSelect[0] = 421; |
420 | fFlavorSelect = 4; | |
421 | break; | |
90d7b703 | 422 | case kPyDPlusPbPbMNR: |
423 | case kPyDPluspPbMNR: | |
424 | case kPyDPlusppMNR: | |
425 | fParentSelect[0] = 411; | |
426 | fFlavorSelect = 4; | |
427 | break; | |
e0e89f40 | 428 | case kPyDPlusStrangePbPbMNR: |
429 | case kPyDPlusStrangepPbMNR: | |
430 | case kPyDPlusStrangeppMNR: | |
431 | fParentSelect[0] = 431; | |
432 | fFlavorSelect = 4; | |
433 | break; | |
8d2cd130 | 434 | case kPyBeauty: |
9dfe63b3 | 435 | case kPyBeautyJets: |
adf4d898 | 436 | case kPyBeautyPbPbMNR: |
437 | case kPyBeautypPbMNR: | |
438 | case kPyBeautyppMNR: | |
e0e89f40 | 439 | case kPyBeautyppMNRwmi: |
8d2cd130 | 440 | fParentSelect[0]= 511; |
441 | fParentSelect[1]= 521; | |
442 | fParentSelect[2]= 531; | |
443 | fParentSelect[3]= 5122; | |
444 | fParentSelect[4]= 5132; | |
445 | fParentSelect[5]= 5232; | |
446 | fParentSelect[6]= 5332; | |
447 | fFlavorSelect = 5; | |
448 | break; | |
449 | case kPyBeautyUnforced: | |
450 | fParentSelect[0] = 511; | |
451 | fParentSelect[1] = 521; | |
452 | fParentSelect[2] = 531; | |
453 | fParentSelect[3] = 5122; | |
454 | fParentSelect[4] = 5132; | |
455 | fParentSelect[5] = 5232; | |
456 | fParentSelect[6] = 5332; | |
457 | fFlavorSelect = 5; | |
458 | break; | |
459 | case kPyJpsiChi: | |
460 | case kPyJpsi: | |
461 | fParentSelect[0] = 443; | |
462 | break; | |
f529e69b | 463 | case kPyMbDefault: |
8d2cd130 | 464 | case kPyMb: |
04081a91 | 465 | case kPyMbWithDirectPhoton: |
8d2cd130 | 466 | case kPyMbNonDiffr: |
d7de4a67 | 467 | case kPyMbMSEL1: |
8d2cd130 | 468 | case kPyJets: |
469 | case kPyDirectGamma: | |
e33acb67 | 470 | case kPyLhwgMb: |
8d2cd130 | 471 | break; |
589380c6 | 472 | case kPyW: |
0f6ee828 | 473 | case kPyZ: |
589380c6 | 474 | break; |
8d2cd130 | 475 | } |
476 | // | |
592f8307 | 477 | // |
478 | // JetFinder for Trigger | |
479 | // | |
480 | // Configure detector (EMCAL like) | |
481 | // | |
d7de4a67 | 482 | fPythia->SetPARU(51, fPycellEtaMax); |
483 | fPythia->SetMSTU(51, fPycellNEta); | |
484 | fPythia->SetMSTU(52, fPycellNPhi); | |
592f8307 | 485 | // |
486 | // Configure Jet Finder | |
487 | // | |
d7de4a67 | 488 | fPythia->SetPARU(58, fPycellThreshold); |
489 | fPythia->SetPARU(52, fPycellEtSeed); | |
490 | fPythia->SetPARU(53, fPycellMinEtJet); | |
491 | fPythia->SetPARU(54, fPycellMaxRadius); | |
492 | fPythia->SetMSTU(54, 2); | |
592f8307 | 493 | // |
8d2cd130 | 494 | // This counts the total number of calls to Pyevnt() per run. |
495 | fTrialsRun = 0; | |
496 | fQ = 0.; | |
497 | fX1 = 0.; | |
498 | fX2 = 0.; | |
499 | fNev = 0 ; | |
500 | // | |
1d568bc2 | 501 | // |
502 | // | |
8d2cd130 | 503 | AliGenMC::Init(); |
1d568bc2 | 504 | // |
505 | // | |
506 | // | |
507 | if (fSetNuclei) { | |
508 | fDyBoost = 0; | |
509 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
510 | } | |
d7de4a67 | 511 | |
cd07c39b | 512 | fPythia->SetPARJ(200, 0.0); |
513 | fPythia->SetPARJ(199, 0.0); | |
514 | fPythia->SetPARJ(198, 0.0); | |
515 | fPythia->SetPARJ(197, 0.0); | |
516 | ||
517 | if (fQuench == 1) { | |
5fa4b20b | 518 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0); |
32d6ef7d | 519 | } |
3a709cfa | 520 | |
b976f7d8 | 521 | if (fQuench == 3) { |
522 | // Nestor's change of the splittings | |
523 | fPythia->SetPARJ(200, 0.8); | |
524 | fPythia->SetMSTJ(41, 1); // QCD radiation only | |
525 | fPythia->SetMSTJ(42, 2); // angular ordering | |
526 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
527 | fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
528 | fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
529 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
cd07c39b | 530 | } else if (fQuench == 4) { |
531 | // Armesto-Cunqueiro-Salgado change of the splittings. | |
532 | AliFastGlauber* glauber = AliFastGlauber::Instance(); | |
533 | glauber->Init(2); | |
534 | //read and store transverse almonds corresponding to differnt | |
535 | //impact parameters. | |
cd07c39b | 536 | glauber->SetCentralityClass(0.,0.1); |
537 | fPythia->SetPARJ(200, 1.); | |
538 | fPythia->SetPARJ(198, fQhat); | |
539 | fPythia->SetPARJ(199, fLength); | |
cd07c39b | 540 | fPythia->SetMSTJ(42, 2); // angular ordering |
541 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
cd07c39b | 542 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers |
b976f7d8 | 543 | } |
8d2cd130 | 544 | } |
545 | ||
546 | void AliGenPythia::Generate() | |
547 | { | |
548 | // Generate one event | |
19ef8cf0 | 549 | if (!fPythia) fPythia=(AliPythia*) fMCEvGen; |
8d2cd130 | 550 | fDecayer->ForceDecay(); |
551 | ||
552 | Float_t polar[3] = {0,0,0}; | |
553 | Float_t origin[3] = {0,0,0}; | |
a920faf9 | 554 | Float_t p[4]; |
8d2cd130 | 555 | // converts from mm/c to s |
556 | const Float_t kconv=0.001/2.999792458e8; | |
557 | // | |
558 | Int_t nt=0; | |
559 | Int_t jev=0; | |
560 | Int_t j, kf; | |
561 | fTrials=0; | |
f913ec4f | 562 | fEventTime = 0.; |
563 | ||
2590ccf9 | 564 | |
8d2cd130 | 565 | |
566 | // Set collision vertex position | |
2590ccf9 | 567 | if (fVertexSmear == kPerEvent) Vertex(); |
568 | ||
8d2cd130 | 569 | // event loop |
570 | while(1) | |
571 | { | |
32d6ef7d | 572 | // |
5fa4b20b | 573 | // Produce event |
32d6ef7d | 574 | // |
32d6ef7d | 575 | // |
5fa4b20b | 576 | // Switch hadronisation off |
577 | // | |
578 | fPythia->SetMSTJ(1, 0); | |
cd07c39b | 579 | |
580 | if (fQuench ==4){ | |
581 | Double_t bimp; | |
582 | // Quenching comes through medium-modified splitting functions. | |
583 | AliFastGlauber::Instance()->GetRandomBHard(bimp); | |
e6fe9b82 | 584 | fPythia->SetPARJ(197, bimp); |
585 | fImpact = bimp; | |
cd07c39b | 586 | } |
32d6ef7d | 587 | // |
5fa4b20b | 588 | // Either produce new event or read partons from file |
589 | // | |
590 | if (!fReadFromFile) { | |
beac474c | 591 | if (!fNewMIS) { |
592 | fPythia->Pyevnt(); | |
593 | } else { | |
594 | fPythia->Pyevnw(); | |
595 | } | |
5fa4b20b | 596 | fNpartons = fPythia->GetN(); |
597 | } else { | |
33c3c91a | 598 | printf("Loading Event %d\n",AliRunLoader::Instance()->GetEventNumber()); |
599 | fRL->GetEvent(AliRunLoader::Instance()->GetEventNumber()); | |
5fa4b20b | 600 | fPythia->SetN(0); |
601 | LoadEvent(fRL->Stack(), 0 , 1); | |
602 | fPythia->Pyedit(21); | |
603 | } | |
604 | ||
32d6ef7d | 605 | // |
606 | // Run quenching routine | |
607 | // | |
5fa4b20b | 608 | if (fQuench == 1) { |
609 | fPythia->Quench(); | |
610 | } else if (fQuench == 2){ | |
611 | fPythia->Pyquen(208., 0, 0.); | |
b976f7d8 | 612 | } else if (fQuench == 3) { |
613 | // Quenching is via multiplicative correction of the splittings | |
5fa4b20b | 614 | } |
b976f7d8 | 615 | |
32d6ef7d | 616 | // |
5fa4b20b | 617 | // Switch hadronisation on |
32d6ef7d | 618 | // |
20e47f08 | 619 | if (fHadronisation) { |
620 | fPythia->SetMSTJ(1, 1); | |
5fa4b20b | 621 | // |
622 | // .. and perform hadronisation | |
aea21c57 | 623 | // printf("Calling hadronisation %d\n", fPythia->GetN()); |
20e47f08 | 624 | fPythia->Pyexec(); |
625 | } | |
8d2cd130 | 626 | fTrials++; |
8507138f | 627 | fPythia->ImportParticles(&fParticles,"All"); |
1d568bc2 | 628 | Boost(); |
8d2cd130 | 629 | // |
630 | // | |
631 | // | |
632 | Int_t i; | |
633 | ||
dbd64db6 | 634 | fNprimaries = 0; |
8507138f | 635 | Int_t np = fParticles.GetEntriesFast(); |
5fa4b20b | 636 | |
7c21f297 | 637 | if (np == 0) continue; |
8d2cd130 | 638 | // |
2590ccf9 | 639 | |
8d2cd130 | 640 | // |
641 | Int_t* pParent = new Int_t[np]; | |
642 | Int_t* pSelected = new Int_t[np]; | |
643 | Int_t* trackIt = new Int_t[np]; | |
5fa4b20b | 644 | for (i = 0; i < np; i++) { |
8d2cd130 | 645 | pParent[i] = -1; |
646 | pSelected[i] = 0; | |
647 | trackIt[i] = 0; | |
648 | } | |
649 | ||
650 | Int_t nc = 0; // Total n. of selected particles | |
651 | Int_t nParents = 0; // Selected parents | |
652 | Int_t nTkbles = 0; // Trackable particles | |
f529e69b | 653 | if (fProcess != kPyMbDefault && |
654 | fProcess != kPyMb && | |
04081a91 | 655 | fProcess != kPyMbWithDirectPhoton && |
f529e69b | 656 | fProcess != kPyJets && |
8d2cd130 | 657 | fProcess != kPyDirectGamma && |
589380c6 | 658 | fProcess != kPyMbNonDiffr && |
d7de4a67 | 659 | fProcess != kPyMbMSEL1 && |
f529e69b | 660 | fProcess != kPyW && |
661 | fProcess != kPyZ && | |
662 | fProcess != kPyCharmppMNRwmi && | |
9dfe63b3 | 663 | fProcess != kPyBeautyppMNRwmi && |
664 | fProcess != kPyBeautyJets) { | |
8d2cd130 | 665 | |
5fa4b20b | 666 | for (i = 0; i < np; i++) { |
8507138f | 667 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 668 | Int_t ks = iparticle->GetStatusCode(); |
669 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
670 | // No initial state partons | |
671 | if (ks==21) continue; | |
672 | // | |
673 | // Heavy Flavor Selection | |
674 | // | |
675 | // quark ? | |
676 | kf = TMath::Abs(kf); | |
677 | Int_t kfl = kf; | |
9ff6c04c | 678 | // Resonance |
f913ec4f | 679 | |
9ff6c04c | 680 | if (kfl > 100000) kfl %= 100000; |
183a5ca9 | 681 | if (kfl > 10000) kfl %= 10000; |
8d2cd130 | 682 | // meson ? |
683 | if (kfl > 10) kfl/=100; | |
684 | // baryon | |
685 | if (kfl > 10) kfl/=10; | |
8d2cd130 | 686 | Int_t ipa = iparticle->GetFirstMother()-1; |
687 | Int_t kfMo = 0; | |
f913ec4f | 688 | // |
689 | // Establish mother daughter relation between heavy quarks and mesons | |
690 | // | |
691 | if (kf >= fFlavorSelect && kf <= 6) { | |
692 | Int_t idau = iparticle->GetFirstDaughter() - 1; | |
693 | if (idau > -1) { | |
8507138f | 694 | TParticle* daughter = (TParticle *) fParticles.At(idau); |
f913ec4f | 695 | Int_t pdgD = daughter->GetPdgCode(); |
696 | if (pdgD == 91 || pdgD == 92) { | |
697 | Int_t jmin = daughter->GetFirstDaughter() - 1; | |
698 | Int_t jmax = daughter->GetLastDaughter() - 1; | |
2ab330c9 | 699 | for (Int_t jp = jmin; jp <= jmax; jp++) |
700 | ((TParticle *) fParticles.At(jp))->SetFirstMother(i+1); | |
f913ec4f | 701 | } // is string or cluster |
702 | } // has daughter | |
703 | } // heavy quark | |
8d2cd130 | 704 | |
f913ec4f | 705 | |
8d2cd130 | 706 | if (ipa > -1) { |
8507138f | 707 | TParticle * mother = (TParticle *) fParticles.At(ipa); |
8d2cd130 | 708 | kfMo = TMath::Abs(mother->GetPdgCode()); |
709 | } | |
f913ec4f | 710 | |
8d2cd130 | 711 | // What to keep in Stack? |
712 | Bool_t flavorOK = kFALSE; | |
713 | Bool_t selectOK = kFALSE; | |
714 | if (fFeedDownOpt) { | |
32d6ef7d | 715 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 | 716 | } else { |
32d6ef7d | 717 | if (kfl > fFlavorSelect) { |
718 | nc = -1; | |
719 | break; | |
720 | } | |
721 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
8d2cd130 | 722 | } |
723 | switch (fStackFillOpt) { | |
724 | case kFlavorSelection: | |
32d6ef7d | 725 | selectOK = kTRUE; |
726 | break; | |
8d2cd130 | 727 | case kParentSelection: |
32d6ef7d | 728 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; |
729 | break; | |
8d2cd130 | 730 | } |
731 | if (flavorOK && selectOK) { | |
732 | // | |
733 | // Heavy flavor hadron or quark | |
734 | // | |
735 | // Kinematic seletion on final state heavy flavor mesons | |
736 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
737 | { | |
9ff6c04c | 738 | continue; |
8d2cd130 | 739 | } |
740 | pSelected[i] = 1; | |
741 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
742 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
743 | } else { | |
744 | // Kinematic seletion on decay products | |
745 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
9ff6c04c | 746 | && !KinematicSelection(iparticle, 1)) |
8d2cd130 | 747 | { |
9ff6c04c | 748 | continue; |
8d2cd130 | 749 | } |
750 | // | |
751 | // Decay products | |
752 | // Select if mother was selected and is not tracked | |
753 | ||
754 | if (pSelected[ipa] && | |
755 | !trackIt[ipa] && // mother will be tracked ? | |
756 | kfMo != 5 && // mother is b-quark, don't store fragments | |
757 | kfMo != 4 && // mother is c-quark, don't store fragments | |
758 | kf != 92) // don't store string | |
759 | { | |
760 | // | |
761 | // Semi-stable or de-selected: diselect decay products: | |
762 | // | |
763 | // | |
764 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
765 | { | |
766 | Int_t ipF = iparticle->GetFirstDaughter(); | |
767 | Int_t ipL = iparticle->GetLastDaughter(); | |
768 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
769 | } | |
770 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
771 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
772 | } | |
773 | } | |
774 | if (pSelected[i] == -1) pSelected[i] = 0; | |
775 | if (!pSelected[i]) continue; | |
776 | // Count quarks only if you did not include fragmentation | |
777 | if (fFragmentation && kf <= 10) continue; | |
9ff6c04c | 778 | |
8d2cd130 | 779 | nc++; |
780 | // Decision on tracking | |
781 | trackIt[i] = 0; | |
782 | // | |
783 | // Track final state particle | |
784 | if (ks == 1) trackIt[i] = 1; | |
785 | // Track semi-stable particles | |
d25cfd65 | 786 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; |
8d2cd130 | 787 | // Track particles selected by process if undecayed. |
788 | if (fForceDecay == kNoDecay) { | |
789 | if (ParentSelected(kf)) trackIt[i] = 1; | |
790 | } else { | |
791 | if (ParentSelected(kf)) trackIt[i] = 0; | |
792 | } | |
793 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
794 | // | |
795 | // | |
796 | ||
797 | } // particle selection loop | |
798 | if (nc > 0) { | |
799 | for (i = 0; i<np; i++) { | |
800 | if (!pSelected[i]) continue; | |
8507138f | 801 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 802 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
803 | Int_t ks = iparticle->GetStatusCode(); | |
804 | p[0] = iparticle->Px(); | |
805 | p[1] = iparticle->Py(); | |
806 | p[2] = iparticle->Pz(); | |
a920faf9 | 807 | p[3] = iparticle->Energy(); |
808 | ||
2590ccf9 | 809 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
810 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
811 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
812 | ||
8d2cd130 | 813 | Float_t tof = kconv*iparticle->T(); |
814 | Int_t ipa = iparticle->GetFirstMother()-1; | |
815 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
a920faf9 | 816 | |
817 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
818 | p[0], p[1], p[2], p[3], | |
819 | origin[0], origin[1], origin[2], tof, | |
820 | polar[0], polar[1], polar[2], | |
821 | kPPrimary, nt, 1., ks); | |
8d2cd130 | 822 | pParent[i] = nt; |
dbd64db6 | 823 | KeepTrack(nt); |
824 | fNprimaries++; | |
642f15cf | 825 | } // PushTrack loop |
8d2cd130 | 826 | } |
827 | } else { | |
828 | nc = GenerateMB(); | |
829 | } // mb ? | |
f913ec4f | 830 | |
831 | GetSubEventTime(); | |
8d2cd130 | 832 | |
234f6d32 | 833 | delete[] pParent; |
834 | delete[] pSelected; | |
835 | delete[] trackIt; | |
8d2cd130 | 836 | |
837 | if (nc > 0) { | |
838 | switch (fCountMode) { | |
839 | case kCountAll: | |
840 | // printf(" Count all \n"); | |
841 | jev += nc; | |
842 | break; | |
843 | case kCountParents: | |
844 | // printf(" Count parents \n"); | |
845 | jev += nParents; | |
846 | break; | |
847 | case kCountTrackables: | |
848 | // printf(" Count trackable \n"); | |
849 | jev += nTkbles; | |
850 | break; | |
851 | } | |
852 | if (jev >= fNpart || fNpart == -1) { | |
853 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
e0e89f40 | 854 | |
8d2cd130 | 855 | fQ += fPythia->GetVINT(51); |
856 | fX1 += fPythia->GetVINT(41); | |
857 | fX2 += fPythia->GetVINT(42); | |
858 | fTrialsRun += fTrials; | |
859 | fNev++; | |
860 | MakeHeader(); | |
861 | break; | |
862 | } | |
863 | } | |
864 | } // event loop | |
865 | SetHighWaterMark(nt); | |
866 | // adjust weight due to kinematic selection | |
b88f5cea | 867 | // AdjustWeights(); |
8d2cd130 | 868 | // get cross-section |
869 | fXsection=fPythia->GetPARI(1); | |
870 | } | |
871 | ||
872 | Int_t AliGenPythia::GenerateMB() | |
873 | { | |
874 | // | |
875 | // Min Bias selection and other global selections | |
876 | // | |
877 | Int_t i, kf, nt, iparent; | |
878 | Int_t nc = 0; | |
bf950da8 | 879 | Float_t p[4]; |
8d2cd130 | 880 | Float_t polar[3] = {0,0,0}; |
881 | Float_t origin[3] = {0,0,0}; | |
882 | // converts from mm/c to s | |
883 | const Float_t kconv=0.001/2.999792458e8; | |
884 | ||
e0e89f40 | 885 | |
886 | ||
8507138f | 887 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
aea21c57 | 888 | |
5fa4b20b | 889 | |
e0e89f40 | 890 | |
8d2cd130 | 891 | Int_t* pParent = new Int_t[np]; |
892 | for (i=0; i< np; i++) pParent[i] = -1; | |
2f405d65 | 893 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets || fProcess == kPyBeautyppMNRwmi) { |
8507138f | 894 | TParticle* jet1 = (TParticle *) fParticles.At(6); |
895 | TParticle* jet2 = (TParticle *) fParticles.At(7); | |
234f6d32 | 896 | if (!CheckTrigger(jet1, jet2)) { |
897 | delete [] pParent; | |
898 | return 0; | |
899 | } | |
8d2cd130 | 900 | } |
e0e89f40 | 901 | |
9fd8e520 | 902 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL |
903 | if (fProcess == kPyJets && (fFragPhotonInCalo || fPi0InCalo) ) { | |
ec2c406e | 904 | |
905 | Bool_t ok = kFALSE; | |
906 | ||
907 | Int_t pdg = 0; | |
9fd8e520 | 908 | if (fFragPhotonInCalo) pdg = 22 ; // Photon |
82e0bdff | 909 | else if (fPi0InCalo) pdg = 111 ; // Pi0 |
ec2c406e | 910 | |
911 | for (i=0; i< np; i++) { | |
8507138f | 912 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
ec2c406e | 913 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && |
9fd8e520 | 914 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ |
562cbbcf | 915 | Int_t imother = iparticle->GetFirstMother() - 1; |
8507138f | 916 | TParticle* pmother = (TParticle *) fParticles.At(imother); |
9fd8e520 | 917 | if(pdg == 111 || |
82e0bdff | 918 | (pdg == 22 && pmother->GetStatusCode() != 11)) //No photon from hadron decay |
9fd8e520 | 919 | { |
920 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
82e0bdff | 921 | Float_t eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax |
9fd8e520 | 922 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || |
923 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
924 | ok =kTRUE; | |
925 | } | |
ec2c406e | 926 | } |
927 | } | |
928 | if(!ok) | |
929 | return 0; | |
930 | } | |
9dfe63b3 | 931 | |
932 | // Select beauty jets with electron in EMCAL | |
933 | if (fProcess == kPyBeautyJets && fEleInEMCAL) { | |
934 | ||
935 | Bool_t ok = kFALSE; | |
936 | ||
937 | Int_t pdg = 11; //electron | |
938 | ||
70574ff8 | 939 | Float_t pt = 0.; |
940 | Float_t eta = 0.; | |
941 | Float_t phi = 0.; | |
9dfe63b3 | 942 | for (i=0; i< np; i++) { |
943 | TParticle* iparticle = (TParticle *) fParticles.At(i); | |
944 | if(iparticle->GetStatusCode()==1 && TMath::Abs(iparticle->GetPdgCode())==pdg && | |
945 | iparticle->Pt() > fElectronMinPt){ | |
946 | pt = iparticle->Pt(); | |
947 | phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
948 | eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax | |
949 | if(IsInEMCAL(phi,eta)) | |
950 | ok =kTRUE; | |
951 | } | |
952 | } | |
953 | if(!ok) | |
954 | return 0; | |
955 | AliDebug(5,Form("Found an electron jet (pt,eta,phi) = (%f,%f,%f)",pt,eta,phi)); | |
956 | } | |
ec2c406e | 957 | |
700b9416 | 958 | // Check for minimum multiplicity |
959 | if (fTriggerMultiplicity > 0) { | |
960 | Int_t multiplicity = 0; | |
961 | for (i = 0; i < np; i++) { | |
8507138f | 962 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
700b9416 | 963 | |
964 | Int_t statusCode = iparticle->GetStatusCode(); | |
965 | ||
966 | // Initial state particle | |
967 | if (statusCode > 20) | |
968 | continue; | |
969 | ||
970 | // skip quarks and gluons | |
971 | Int_t pdgCode = TMath::Abs(iparticle->GetPdgCode()); | |
972 | if (pdgCode <= 10 || pdgCode == 21) | |
973 | continue; | |
974 | ||
975 | if (fTriggerMultiplicityEta > 0 && TMath::Abs(iparticle->Eta()) > fTriggerMultiplicityEta) | |
976 | continue; | |
977 | ||
978 | TParticlePDG* pdgPart = iparticle->GetPDG(); | |
979 | if (pdgPart && pdgPart->Charge() == 0) | |
980 | continue; | |
981 | ||
982 | ++multiplicity; | |
983 | } | |
984 | ||
985 | if (multiplicity < fTriggerMultiplicity) { | |
986 | delete [] pParent; | |
987 | return 0; | |
988 | } | |
989 | ||
990 | Printf("Triggered on event with multiplicity of %d > %d", multiplicity, fTriggerMultiplicity); | |
991 | } | |
90a236ce | 992 | |
993 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
994 | if ((fProcess == kPyJets || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ | |
995 | ||
996 | Bool_t okd = kFALSE; | |
997 | ||
998 | Int_t pdg = 22; | |
999 | Int_t iphcand = -1; | |
1000 | for (i=0; i< np; i++) { | |
8507138f | 1001 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1002 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees |
1003 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
1004 | ||
1005 | if(iparticle->GetStatusCode() == 1 | |
1006 | && iparticle->GetPdgCode() == pdg | |
1007 | && iparticle->Pt() > fPhotonMinPt | |
04a26b0a | 1008 | && eta < fPHOSEta){ |
90a236ce | 1009 | |
1010 | // first check if the photon is in PHOS phi | |
1011 | if(IsInPHOS(phi,eta)){ | |
1012 | okd = kTRUE; | |
1013 | break; | |
1014 | } | |
1015 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
1016 | ||
1017 | } | |
1018 | } | |
1019 | ||
1020 | if(!okd && iphcand != -1) // execute rotation in phi | |
1021 | RotatePhi(iphcand,okd); | |
1022 | ||
1023 | if(!okd) | |
1024 | return 0; | |
1025 | } | |
1026 | ||
7ce1321b | 1027 | if (fTriggerParticle) { |
1028 | Bool_t triggered = kFALSE; | |
1029 | for (i = 0; i < np; i++) { | |
8507138f | 1030 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
7ce1321b | 1031 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
38db0ee6 | 1032 | if (kf != fTriggerParticle) continue; |
7ce1321b | 1033 | if (iparticle->Pt() == 0.) continue; |
1034 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
1035 | triggered = kTRUE; | |
1036 | break; | |
1037 | } | |
234f6d32 | 1038 | if (!triggered) { |
1039 | delete [] pParent; | |
1040 | return 0; | |
1041 | } | |
7ce1321b | 1042 | } |
e0e89f40 | 1043 | |
1044 | ||
1045 | // Check if there is a ccbar or bbbar pair with at least one of the two | |
1046 | // in fYMin < y < fYMax | |
2f405d65 | 1047 | |
9dfe63b3 | 1048 | if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi || fProcess == kPyBeautyJets) { |
9ccc3d0e | 1049 | TParticle *partCheck; |
1050 | TParticle *mother; | |
e0e89f40 | 1051 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; |
9ccc3d0e | 1052 | Bool_t theChild=kFALSE; |
1053 | Float_t y; | |
1054 | Int_t pdg,mpdg,mpdgUpperFamily; | |
e0e89f40 | 1055 | for(i=0; i<np; i++) { |
9ccc3d0e | 1056 | partCheck = (TParticle*)fParticles.At(i); |
1057 | pdg = partCheck->GetPdgCode(); | |
1058 | if(TMath::Abs(pdg) == fFlavorSelect) { // quark | |
1059 | if(pdg>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
1060 | y = 0.5*TMath::Log((partCheck->Energy()+partCheck->Pz()+1.e-13)/ | |
1061 | (partCheck->Energy()-partCheck->Pz()+1.e-13)); | |
1062 | if(y>fYMin && y<fYMax) inYcut=kTRUE; | |
1063 | } | |
1064 | if(fCutOnChild && TMath::Abs(pdg) == fPdgCodeParticleforAcceptanceCut) { | |
1065 | Int_t mi = partCheck->GetFirstMother() - 1; | |
1066 | if(mi<0) continue; | |
1067 | mother = (TParticle*)fParticles.At(mi); | |
1068 | mpdg=TMath::Abs(mother->GetPdgCode()); | |
75fde694 | 1069 | mpdgUpperFamily=(mpdg>1000 ? mpdg+1000 : mpdg+100); // keep e from c from b |
9ccc3d0e | 1070 | if ( ParentSelected(mpdg) || |
1071 | (fFlavorSelect==5 && ParentSelected(mpdgUpperFamily))) { | |
1072 | if (KinematicSelection(partCheck,1)) { | |
1073 | theChild=kTRUE; | |
1074 | } | |
1075 | } | |
1076 | } | |
e0e89f40 | 1077 | } |
9ccc3d0e | 1078 | if (!theQ || !theQbar || !inYcut) { // one of the c/b conditions not satisfied |
234f6d32 | 1079 | delete[] pParent; |
e0e89f40 | 1080 | return 0; |
1081 | } | |
9ccc3d0e | 1082 | if (fCutOnChild && !theChild) { // one of the child conditions not satisfied |
1083 | delete[] pParent; | |
1084 | return 0; | |
1085 | } | |
1086 | ||
e0e89f40 | 1087 | } |
aea21c57 | 1088 | |
0f6ee828 | 1089 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff |
f529e69b | 1090 | if ( (fProcess == kPyW || |
1091 | fProcess == kPyZ || | |
1092 | fProcess == kPyMbDefault || | |
1093 | fProcess == kPyMb || | |
04081a91 | 1094 | fProcess == kPyMbWithDirectPhoton || |
f529e69b | 1095 | fProcess == kPyMbNonDiffr) |
0f6ee828 | 1096 | && (fCutOnChild == 1) ) { |
1097 | if ( !CheckKinematicsOnChild() ) { | |
234f6d32 | 1098 | delete[] pParent; |
0f6ee828 | 1099 | return 0; |
1100 | } | |
aea21c57 | 1101 | } |
1102 | ||
1103 | ||
f913ec4f | 1104 | for (i = 0; i < np; i++) { |
8d2cd130 | 1105 | Int_t trackIt = 0; |
8507138f | 1106 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 1107 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
1108 | Int_t ks = iparticle->GetStatusCode(); | |
1109 | Int_t km = iparticle->GetFirstMother(); | |
1110 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
1111 | (ks != 1) || | |
9dfe63b3 | 1112 | ((fProcess == kPyJets || fProcess == kPyBeautyJets) && ks == 21 && km == 0 && i>1)) { |
8d2cd130 | 1113 | nc++; |
1114 | if (ks == 1) trackIt = 1; | |
1115 | Int_t ipa = iparticle->GetFirstMother()-1; | |
1116 | ||
1117 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
1118 | ||
1119 | // | |
1120 | // store track information | |
1121 | p[0] = iparticle->Px(); | |
1122 | p[1] = iparticle->Py(); | |
1123 | p[2] = iparticle->Pz(); | |
a920faf9 | 1124 | p[3] = iparticle->Energy(); |
1406f599 | 1125 | |
a920faf9 | 1126 | |
2590ccf9 | 1127 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
1128 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
1129 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
1130 | ||
f913ec4f | 1131 | Float_t tof = fEventTime + kconv * iparticle->T(); |
a920faf9 | 1132 | |
1133 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
1134 | p[0], p[1], p[2], p[3], | |
1135 | origin[0], origin[1], origin[2], tof, | |
1136 | polar[0], polar[1], polar[2], | |
1137 | kPPrimary, nt, 1., ks); | |
dbd64db6 | 1138 | fNprimaries++; |
8d2cd130 | 1139 | KeepTrack(nt); |
1140 | pParent[i] = nt; | |
f913ec4f | 1141 | SetHighWaterMark(nt); |
1142 | ||
8d2cd130 | 1143 | } // select particle |
1144 | } // particle loop | |
1145 | ||
234f6d32 | 1146 | delete[] pParent; |
e0e89f40 | 1147 | |
f913ec4f | 1148 | return 1; |
8d2cd130 | 1149 | } |
1150 | ||
1151 | ||
1152 | void AliGenPythia::FinishRun() | |
1153 | { | |
1154 | // Print x-section summary | |
1155 | fPythia->Pystat(1); | |
2779fc64 | 1156 | |
1157 | if (fNev > 0.) { | |
1158 | fQ /= fNev; | |
1159 | fX1 /= fNev; | |
1160 | fX2 /= fNev; | |
1161 | } | |
1162 | ||
8d2cd130 | 1163 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); |
1164 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
8d2cd130 | 1165 | } |
1166 | ||
7184e472 | 1167 | void AliGenPythia::AdjustWeights() const |
8d2cd130 | 1168 | { |
1169 | // Adjust the weights after generation of all events | |
1170 | // | |
e2bddf81 | 1171 | if (gAlice) { |
1172 | TParticle *part; | |
1173 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1174 | for (Int_t i=0; i<ntrack; i++) { | |
1175 | part= gAlice->GetMCApp()->Particle(i); | |
1176 | part->SetWeight(part->GetWeight()*fKineBias); | |
1177 | } | |
8d2cd130 | 1178 | } |
1179 | } | |
1180 | ||
20e47f08 | 1181 | void AliGenPythia::SetNuclei(Int_t a1, Int_t a2, Int_t pdfset) |
8d2cd130 | 1182 | { |
1183 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1d568bc2 | 1184 | |
1a626d4e | 1185 | fAProjectile = a1; |
1186 | fATarget = a2; | |
20e47f08 | 1187 | fNucPdf = pdfset; // 0 EKS98 1 EPS08 |
1d568bc2 | 1188 | fSetNuclei = kTRUE; |
8d2cd130 | 1189 | } |
1190 | ||
1191 | ||
1192 | void AliGenPythia::MakeHeader() | |
1193 | { | |
7184e472 | 1194 | // |
1195 | // Make header for the simulated event | |
1196 | // | |
183a5ca9 | 1197 | if (gAlice) { |
1198 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
f913ec4f | 1199 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2); |
183a5ca9 | 1200 | } |
1201 | ||
8d2cd130 | 1202 | // Builds the event header, to be called after each event |
e5c87a3d | 1203 | if (fHeader) delete fHeader; |
1204 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
8d2cd130 | 1205 | // |
1206 | // Event type | |
e5c87a3d | 1207 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1)); |
8d2cd130 | 1208 | // |
1209 | // Number of trials | |
e5c87a3d | 1210 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); |
8d2cd130 | 1211 | // |
1212 | // Event Vertex | |
d25cfd65 | 1213 | fHeader->SetPrimaryVertex(fVertex); |
dbd64db6 | 1214 | |
1215 | // | |
1216 | // Number of primaries | |
1217 | fHeader->SetNProduced(fNprimaries); | |
8d2cd130 | 1218 | // |
1219 | // Jets that have triggered | |
f913ec4f | 1220 | |
9dfe63b3 | 1221 | //Need to store jets for b-jet studies too! |
2f405d65 | 1222 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets || fProcess == kPyBeautyppMNRwmi) |
8d2cd130 | 1223 | { |
1224 | Int_t ntrig, njet; | |
1225 | Float_t jets[4][10]; | |
1226 | GetJets(njet, ntrig, jets); | |
9ff6c04c | 1227 | |
8d2cd130 | 1228 | |
1229 | for (Int_t i = 0; i < ntrig; i++) { | |
e5c87a3d | 1230 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], |
8d2cd130 | 1231 | jets[3][i]); |
1232 | } | |
1233 | } | |
5fa4b20b | 1234 | // |
1235 | // Copy relevant information from external header, if present. | |
1236 | // | |
1237 | Float_t uqJet[4]; | |
1238 | ||
1239 | if (fRL) { | |
1240 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1241 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1242 | { | |
1243 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1244 | ||
1245 | ||
1246 | exHeader->TriggerJet(i, uqJet); | |
1247 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1248 | } | |
1249 | } | |
1250 | // | |
1251 | // Store quenching parameters | |
1252 | // | |
1253 | if (fQuench){ | |
1254 | Double_t z[4]; | |
1255 | Double_t xp, yp; | |
7c21f297 | 1256 | if (fQuench == 1) { |
1257 | // Pythia::Quench() | |
1258 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1bab4b79 | 1259 | } else if (fQuench == 2){ |
7c21f297 | 1260 | // Pyquen |
1261 | Double_t r1 = PARIMP.rb1; | |
1262 | Double_t r2 = PARIMP.rb2; | |
1263 | Double_t b = PARIMP.b1; | |
1264 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1265 | Double_t phi = PARIMP.psib1; | |
1266 | xp = r * TMath::Cos(phi); | |
1267 | yp = r * TMath::Sin(phi); | |
1268 | ||
1bab4b79 | 1269 | } else if (fQuench == 4) { |
1270 | // QPythia | |
5831e75f | 1271 | Double_t xy[2]; |
e9719084 | 1272 | Double_t i0i1[2]; |
1273 | AliFastGlauber::Instance()->GetSavedXY(xy); | |
1274 | AliFastGlauber::Instance()->GetSavedI0I1(i0i1); | |
5831e75f | 1275 | xp = xy[0]; |
1276 | yp = xy[1]; | |
e6fe9b82 | 1277 | ((AliGenPythiaEventHeader*) fHeader)->SetImpactParameter(fImpact); |
7c21f297 | 1278 | } |
1bab4b79 | 1279 | |
7c21f297 | 1280 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); |
1281 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1bab4b79 | 1282 | } |
beac474c | 1283 | // |
1284 | // Store pt^hard | |
1285 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47)); | |
5fa4b20b | 1286 | // |
cf57b268 | 1287 | // Pass header |
5fa4b20b | 1288 | // |
cf57b268 | 1289 | AddHeader(fHeader); |
4c4eac97 | 1290 | fHeader = 0x0; |
8d2cd130 | 1291 | } |
cf57b268 | 1292 | |
8d2cd130 | 1293 | Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2) |
1294 | { | |
1295 | // Check the kinematic trigger condition | |
1296 | // | |
1297 | Double_t eta[2]; | |
1298 | eta[0] = jet1->Eta(); | |
1299 | eta[1] = jet2->Eta(); | |
1300 | Double_t phi[2]; | |
1301 | phi[0] = jet1->Phi(); | |
1302 | phi[1] = jet2->Phi(); | |
1303 | Int_t pdg[2]; | |
1304 | pdg[0] = jet1->GetPdgCode(); | |
1305 | pdg[1] = jet2->GetPdgCode(); | |
1306 | Bool_t triggered = kFALSE; | |
1307 | ||
2f405d65 | 1308 | if (fProcess == kPyJets || fProcess == kPyBeautyJets || fProcess == kPyBeautyppMNRwmi) { |
8d2cd130 | 1309 | Int_t njets = 0; |
1310 | Int_t ntrig = 0; | |
1311 | Float_t jets[4][10]; | |
1312 | // | |
1313 | // Use Pythia clustering on parton level to determine jet axis | |
1314 | // | |
1315 | GetJets(njets, ntrig, jets); | |
1316 | ||
76d6ba9a | 1317 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; |
8d2cd130 | 1318 | // |
1319 | } else { | |
1320 | Int_t ij = 0; | |
1321 | Int_t ig = 1; | |
1322 | if (pdg[0] == kGamma) { | |
1323 | ij = 1; | |
1324 | ig = 0; | |
1325 | } | |
1326 | //Check eta range first... | |
1327 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1328 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1329 | { | |
1330 | //Eta is okay, now check phi range | |
1331 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1332 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1333 | { | |
1334 | triggered = kTRUE; | |
1335 | } | |
1336 | } | |
1337 | } | |
1338 | return triggered; | |
1339 | } | |
aea21c57 | 1340 | |
1341 | ||
aea21c57 | 1342 | |
7184e472 | 1343 | Bool_t AliGenPythia::CheckKinematicsOnChild(){ |
1344 | // | |
1345 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1346 | // | |
aea21c57 | 1347 | Bool_t checking = kFALSE; |
1348 | Int_t j, kcode, ks, km; | |
1349 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1350 | Int_t numberOfAcceptedParticles = 1; | |
1351 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
8507138f | 1352 | Int_t npart = fParticles.GetEntriesFast(); |
aea21c57 | 1353 | |
0f6ee828 | 1354 | for (j = 0; j<npart; j++) { |
8507138f | 1355 | TParticle * jparticle = (TParticle *) fParticles.At(j); |
aea21c57 | 1356 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
1357 | ks = jparticle->GetStatusCode(); | |
1358 | km = jparticle->GetFirstMother(); | |
1359 | ||
1360 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1361 | nPartAcc++; | |
1362 | } | |
0f6ee828 | 1363 | if( numberOfAcceptedParticles <= nPartAcc){ |
1364 | checking = kTRUE; | |
1365 | break; | |
1366 | } | |
aea21c57 | 1367 | } |
0f6ee828 | 1368 | |
aea21c57 | 1369 | return checking; |
aea21c57 | 1370 | } |
1371 | ||
5fa4b20b | 1372 | void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr) |
8d2cd130 | 1373 | { |
1058d9df | 1374 | // |
1375 | // Load event into Pythia Common Block | |
1376 | // | |
1377 | ||
1378 | Int_t npart = stack -> GetNprimary(); | |
1379 | Int_t n0 = 0; | |
1380 | ||
1381 | if (!flag) { | |
1382 | (fPythia->GetPyjets())->N = npart; | |
1383 | } else { | |
1384 | n0 = (fPythia->GetPyjets())->N; | |
1385 | (fPythia->GetPyjets())->N = n0 + npart; | |
1386 | } | |
1387 | ||
1388 | ||
1389 | for (Int_t part = 0; part < npart; part++) { | |
1390 | TParticle *mPart = stack->Particle(part); | |
32d6ef7d | 1391 | |
1058d9df | 1392 | Int_t kf = mPart->GetPdgCode(); |
1393 | Int_t ks = mPart->GetStatusCode(); | |
1394 | Int_t idf = mPart->GetFirstDaughter(); | |
1395 | Int_t idl = mPart->GetLastDaughter(); | |
1396 | ||
1397 | if (reHadr) { | |
1398 | if (ks == 11 || ks == 12) { | |
1399 | ks -= 10; | |
1400 | idf = -1; | |
1401 | idl = -1; | |
1402 | } | |
32d6ef7d | 1403 | } |
1404 | ||
1058d9df | 1405 | Float_t px = mPart->Px(); |
1406 | Float_t py = mPart->Py(); | |
1407 | Float_t pz = mPart->Pz(); | |
1408 | Float_t e = mPart->Energy(); | |
1409 | Float_t m = mPart->GetCalcMass(); | |
32d6ef7d | 1410 | |
1058d9df | 1411 | |
1412 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1413 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1414 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1415 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1416 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1417 | ||
1418 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1419 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1420 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1421 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1422 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | void AliGenPythia::LoadEvent(TObjArray* stack, Int_t flag, Int_t reHadr) | |
1427 | { | |
1428 | // | |
1429 | // Load event into Pythia Common Block | |
1430 | // | |
1431 | ||
1432 | Int_t npart = stack -> GetEntries(); | |
1433 | Int_t n0 = 0; | |
1434 | ||
1435 | if (!flag) { | |
1436 | (fPythia->GetPyjets())->N = npart; | |
1437 | } else { | |
1438 | n0 = (fPythia->GetPyjets())->N; | |
1439 | (fPythia->GetPyjets())->N = n0 + npart; | |
1440 | } | |
1441 | ||
1442 | ||
1443 | for (Int_t part = 0; part < npart; part++) { | |
1444 | TParticle *mPart = dynamic_cast<TParticle *>(stack->At(part)); | |
1445 | Int_t kf = mPart->GetPdgCode(); | |
1446 | Int_t ks = mPart->GetStatusCode(); | |
1447 | Int_t idf = mPart->GetFirstDaughter(); | |
1448 | Int_t idl = mPart->GetLastDaughter(); | |
1449 | ||
1450 | if (reHadr) { | |
5fa4b20b | 1451 | if (ks == 11 || ks == 12) { |
1058d9df | 1452 | ks -= 10; |
1453 | idf = -1; | |
1454 | idl = -1; | |
5fa4b20b | 1455 | } |
8d2cd130 | 1456 | } |
1058d9df | 1457 | |
1458 | Float_t px = mPart->Px(); | |
1459 | Float_t py = mPart->Py(); | |
1460 | Float_t pz = mPart->Pz(); | |
1461 | Float_t e = mPart->Energy(); | |
1462 | Float_t m = mPart->GetCalcMass(); | |
1463 | ||
1464 | ||
1465 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1466 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1467 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1468 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1469 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1470 | ||
1471 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1472 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1473 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1474 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1475 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1476 | } | |
8d2cd130 | 1477 | } |
1478 | ||
5fa4b20b | 1479 | |
014a9521 | 1480 | void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) |
8d2cd130 | 1481 | { |
1482 | // | |
1483 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1484 | // | |
1485 | // | |
8d2cd130 | 1486 | // |
1487 | // Save jets | |
1488 | Int_t n = fPythia->GetN(); | |
1489 | ||
1490 | // | |
1491 | // Run Jet Finder | |
1492 | fPythia->Pycell(njets); | |
1493 | Int_t i; | |
1494 | for (i = 0; i < njets; i++) { | |
1495 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1496 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1497 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1498 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1499 | ||
1500 | jets[0][i] = px; | |
1501 | jets[1][i] = py; | |
1502 | jets[2][i] = pz; | |
1503 | jets[3][i] = e; | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | ||
1508 | ||
1509 | void AliGenPythia::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1510 | { | |
1511 | // | |
1512 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1513 | // | |
1514 | Int_t n = fPythia->GetN(); | |
1515 | nJets = 0; | |
1516 | nJetsTrig = 0; | |
1517 | if (fJetReconstruction == kCluster) { | |
1518 | // | |
1519 | // Configure cluster algorithm | |
1520 | // | |
1521 | fPythia->SetPARU(43, 2.); | |
1522 | fPythia->SetMSTU(41, 1); | |
1523 | // | |
1524 | // Call cluster algorithm | |
1525 | // | |
1526 | fPythia->Pyclus(nJets); | |
1527 | // | |
1528 | // Loading jets from common block | |
1529 | // | |
1530 | } else { | |
592f8307 | 1531 | |
8d2cd130 | 1532 | // |
1533 | // Run Jet Finder | |
1534 | fPythia->Pycell(nJets); | |
1535 | } | |
1536 | ||
1537 | Int_t i; | |
1538 | for (i = 0; i < nJets; i++) { | |
1539 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1540 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1541 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1542 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1543 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
a920faf9 | 1544 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); |
8d2cd130 | 1545 | Float_t theta = TMath::ATan2(pt,pz); |
1546 | Float_t et = e * TMath::Sin(theta); | |
1547 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
8d2cd130 | 1548 | if ( |
1549 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
675eb105 | 1550 | phi > fPhiMinJet && phi < fPhiMaxJet && |
8d2cd130 | 1551 | et > fEtMinJet && et < fEtMaxJet |
1552 | ) | |
1553 | { | |
1554 | jets[0][nJetsTrig] = px; | |
1555 | jets[1][nJetsTrig] = py; | |
1556 | jets[2][nJetsTrig] = pz; | |
1557 | jets[3][nJetsTrig] = e; | |
1558 | nJetsTrig++; | |
5fa4b20b | 1559 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
8d2cd130 | 1560 | } else { |
1561 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); | |
1562 | } | |
1563 | } | |
1564 | } | |
1565 | ||
f913ec4f | 1566 | void AliGenPythia::GetSubEventTime() |
1567 | { | |
1568 | // Calculates time of the next subevent | |
9d7108a7 | 1569 | fEventTime = 0.; |
1570 | if (fEventsTime) { | |
1571 | TArrayF &array = *fEventsTime; | |
1572 | fEventTime = array[fCurSubEvent++]; | |
1573 | } | |
1574 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1575 | return; | |
f913ec4f | 1576 | } |
8d2cd130 | 1577 | |
ec2c406e | 1578 | Bool_t AliGenPythia::IsInEMCAL(Float_t phi, Float_t eta) |
1579 | { | |
1580 | // Is particle in EMCAL acceptance? | |
ec2c406e | 1581 | // phi in degrees, etamin=-etamax |
9fd8e520 | 1582 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && |
1583 | eta < fEMCALEta ) | |
ec2c406e | 1584 | return kTRUE; |
1585 | else | |
1586 | return kFALSE; | |
1587 | } | |
1588 | ||
1589 | Bool_t AliGenPythia::IsInPHOS(Float_t phi, Float_t eta) | |
1590 | { | |
1591 | // Is particle in PHOS acceptance? | |
1592 | // Acceptance slightly larger considered. | |
1593 | // phi in degrees, etamin=-etamax | |
9fd8e520 | 1594 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && |
1595 | eta < fPHOSEta ) | |
ec2c406e | 1596 | return kTRUE; |
1597 | else | |
1598 | return kFALSE; | |
1599 | } | |
1600 | ||
90a236ce | 1601 | void AliGenPythia::RotatePhi(Int_t iphcand, Bool_t& okdd) |
1602 | { | |
1603 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1604 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1605 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1606 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1607 | ||
1608 | //calculate deltaphi | |
8507138f | 1609 | TParticle* ph = (TParticle *) fParticles.At(iphcand); |
90a236ce | 1610 | Double_t phphi = ph->Phi(); |
1611 | Double_t deltaphi = phiPHOS - phphi; | |
1612 | ||
1613 | ||
1614 | ||
1615 | //loop for all particles and produce the phi rotation | |
8507138f | 1616 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
90a236ce | 1617 | Double_t oldphi, newphi; |
1618 | Double_t newVx, newVy, R, Vz, time; | |
1619 | Double_t newPx, newPy, pt, Pz, e; | |
1620 | for(Int_t i=0; i< np; i++) { | |
8507138f | 1621 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1622 | oldphi = iparticle->Phi(); |
1623 | newphi = oldphi + deltaphi; | |
1624 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1625 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1626 | ||
1627 | R = iparticle->R(); | |
1628 | newVx = R*TMath::Cos(newphi); | |
1629 | newVy = R*TMath::Sin(newphi); | |
1630 | Vz = iparticle->Vz(); // don't transform | |
1631 | time = iparticle->T(); // don't transform | |
1632 | ||
1633 | pt = iparticle->Pt(); | |
1634 | newPx = pt*TMath::Cos(newphi); | |
1635 | newPy = pt*TMath::Sin(newphi); | |
1636 | Pz = iparticle->Pz(); // don't transform | |
1637 | e = iparticle->Energy(); // don't transform | |
1638 | ||
1639 | // apply rotation | |
1640 | iparticle->SetProductionVertex(newVx, newVy, Vz, time); | |
1641 | iparticle->SetMomentum(newPx, newPy, Pz, e); | |
1642 | ||
1643 | } //end particle loop | |
1644 | ||
1645 | // now let's check that we put correctly the candidate photon in PHOS | |
1646 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1647 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1648 | if(IsInPHOS(phi,eta)) | |
1649 | okdd = kTRUE; | |
1650 | } | |
ec2c406e | 1651 | |
1652 | ||
8d2cd130 | 1653 | #ifdef never |
1654 | void AliGenPythia::Streamer(TBuffer &R__b) | |
1655 | { | |
1656 | // Stream an object of class AliGenPythia. | |
1657 | ||
1658 | if (R__b.IsReading()) { | |
1659 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1660 | AliGenerator::Streamer(R__b); | |
1661 | R__b >> (Int_t&)fProcess; | |
1662 | R__b >> (Int_t&)fStrucFunc; | |
1663 | R__b >> (Int_t&)fForceDecay; | |
1664 | R__b >> fEnergyCMS; | |
1665 | R__b >> fKineBias; | |
1666 | R__b >> fTrials; | |
1667 | fParentSelect.Streamer(R__b); | |
1668 | fChildSelect.Streamer(R__b); | |
1669 | R__b >> fXsection; | |
1670 | // (AliPythia::Instance())->Streamer(R__b); | |
1671 | R__b >> fPtHardMin; | |
1672 | R__b >> fPtHardMax; | |
1673 | // if (fDecayer) fDecayer->Streamer(R__b); | |
1674 | } else { | |
1675 | R__b.WriteVersion(AliGenPythia::IsA()); | |
1676 | AliGenerator::Streamer(R__b); | |
1677 | R__b << (Int_t)fProcess; | |
1678 | R__b << (Int_t)fStrucFunc; | |
1679 | R__b << (Int_t)fForceDecay; | |
1680 | R__b << fEnergyCMS; | |
1681 | R__b << fKineBias; | |
1682 | R__b << fTrials; | |
1683 | fParentSelect.Streamer(R__b); | |
1684 | fChildSelect.Streamer(R__b); | |
1685 | R__b << fXsection; | |
1686 | // R__b << fPythia; | |
1687 | R__b << fPtHardMin; | |
1688 | R__b << fPtHardMax; | |
1689 | // fDecayer->Streamer(R__b); | |
1690 | } | |
1691 | } | |
1692 | #endif | |
1693 | ||
90d7b703 | 1694 | |
589380c6 | 1695 |