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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), | |
55 | fStrucFunc(kCTEQ5L), | |
e8a8adcd | 56 | fKineBias(0.), |
57 | fTrials(0), | |
58 | fTrialsRun(0), | |
59 | fQ(0.), | |
60 | fX1(0.), | |
61 | fX2(0.), | |
62 | fEventTime(0.), | |
63 | fInteractionRate(0.), | |
64 | fTimeWindow(0.), | |
65 | fCurSubEvent(0), | |
66 | fEventsTime(0), | |
67 | fNev(0), | |
68 | fFlavorSelect(0), | |
69 | fXsection(0.), | |
70 | fPythia(0), | |
71 | fPtHardMin(0.), | |
72 | fPtHardMax(1.e4), | |
73 | fYHardMin(-1.e10), | |
74 | fYHardMax(1.e10), | |
75 | fGinit(1), | |
76 | fGfinal(1), | |
77 | fHadronisation(1), | |
78 | fNpartons(0), | |
79 | fReadFromFile(0), | |
80 | fQuench(0), | |
cd07c39b | 81 | fQhat(0.), |
82 | fLength(0.), | |
e8a8adcd | 83 | fPtKick(1.), |
84 | fFullEvent(kTRUE), | |
85 | fDecayer(new AliDecayerPythia()), | |
86 | fDebugEventFirst(-1), | |
87 | fDebugEventLast(-1), | |
88 | fEtMinJet(0.), | |
89 | fEtMaxJet(1.e4), | |
90 | fEtaMinJet(-20.), | |
91 | fEtaMaxJet(20.), | |
92 | fPhiMinJet(0.), | |
93 | fPhiMaxJet(2.* TMath::Pi()), | |
94 | fJetReconstruction(kCell), | |
95 | fEtaMinGamma(-20.), | |
96 | fEtaMaxGamma(20.), | |
97 | fPhiMinGamma(0.), | |
98 | fPhiMaxGamma(2. * TMath::Pi()), | |
99 | fPycellEtaMax(2.), | |
100 | fPycellNEta(274), | |
101 | fPycellNPhi(432), | |
102 | fPycellThreshold(0.), | |
103 | fPycellEtSeed(4.), | |
104 | fPycellMinEtJet(10.), | |
105 | fPycellMaxRadius(1.), | |
106 | fStackFillOpt(kFlavorSelection), | |
107 | fFeedDownOpt(kTRUE), | |
108 | fFragmentation(kTRUE), | |
109 | fSetNuclei(kFALSE), | |
110 | fNewMIS(kFALSE), | |
111 | fHFoff(kFALSE), | |
20e47f08 | 112 | fNucPdf(0), |
e8a8adcd | 113 | fTriggerParticle(0), |
114 | fTriggerEta(0.9), | |
700b9416 | 115 | fTriggerMultiplicity(0), |
116 | fTriggerMultiplicityEta(0), | |
e8a8adcd | 117 | fCountMode(kCountAll), |
118 | fHeader(0), | |
119 | fRL(0), | |
ec2c406e | 120 | fFileName(0), |
9fd8e520 | 121 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 122 | fPi0InCalo(kFALSE) , |
90a236ce | 123 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 124 | fEleInEMCAL(kFALSE), |
9fd8e520 | 125 | fCheckEMCAL(kFALSE), |
126 | fCheckPHOS(kFALSE), | |
90a236ce | 127 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 128 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 129 | fPhotonMinPt(0), |
9dfe63b3 | 130 | fElectronMinPt(0), |
9fd8e520 | 131 | fPHOSMinPhi(219.), |
132 | fPHOSMaxPhi(321.), | |
133 | fPHOSEta(0.13), | |
134 | fEMCALMinPhi(79.), | |
135 | fEMCALMaxPhi(191.), | |
136 | fEMCALEta(0.71) | |
ec2c406e | 137 | |
8d2cd130 | 138 | { |
139 | // Default Constructor | |
e7c989e4 | 140 | fEnergyCMS = 5500.; |
2d9f9817 | 141 | SetNuclei(0,0); |
7cdba479 | 142 | if (!AliPythiaRndm::GetPythiaRandom()) |
e8a8adcd | 143 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 | 144 | } |
145 | ||
146 | AliGenPythia::AliGenPythia(Int_t npart) | |
e8a8adcd | 147 | :AliGenMC(npart), |
148 | fProcess(kPyCharm), | |
149 | fStrucFunc(kCTEQ5L), | |
e8a8adcd | 150 | fKineBias(0.), |
151 | fTrials(0), | |
152 | fTrialsRun(0), | |
153 | fQ(0.), | |
154 | fX1(0.), | |
155 | fX2(0.), | |
156 | fEventTime(0.), | |
157 | fInteractionRate(0.), | |
158 | fTimeWindow(0.), | |
159 | fCurSubEvent(0), | |
160 | fEventsTime(0), | |
161 | fNev(0), | |
162 | fFlavorSelect(0), | |
163 | fXsection(0.), | |
164 | fPythia(0), | |
165 | fPtHardMin(0.), | |
166 | fPtHardMax(1.e4), | |
167 | fYHardMin(-1.e10), | |
168 | fYHardMax(1.e10), | |
169 | fGinit(kTRUE), | |
170 | fGfinal(kTRUE), | |
171 | fHadronisation(kTRUE), | |
172 | fNpartons(0), | |
173 | fReadFromFile(kFALSE), | |
174 | fQuench(kFALSE), | |
cd07c39b | 175 | fQhat(0.), |
176 | fLength(0.), | |
e8a8adcd | 177 | fPtKick(1.), |
178 | fFullEvent(kTRUE), | |
179 | fDecayer(new AliDecayerPythia()), | |
180 | fDebugEventFirst(-1), | |
181 | fDebugEventLast(-1), | |
182 | fEtMinJet(0.), | |
183 | fEtMaxJet(1.e4), | |
184 | fEtaMinJet(-20.), | |
185 | fEtaMaxJet(20.), | |
186 | fPhiMinJet(0.), | |
187 | fPhiMaxJet(2.* TMath::Pi()), | |
188 | fJetReconstruction(kCell), | |
189 | fEtaMinGamma(-20.), | |
190 | fEtaMaxGamma(20.), | |
191 | fPhiMinGamma(0.), | |
192 | fPhiMaxGamma(2. * TMath::Pi()), | |
193 | fPycellEtaMax(2.), | |
194 | fPycellNEta(274), | |
195 | fPycellNPhi(432), | |
196 | fPycellThreshold(0.), | |
197 | fPycellEtSeed(4.), | |
198 | fPycellMinEtJet(10.), | |
199 | fPycellMaxRadius(1.), | |
200 | fStackFillOpt(kFlavorSelection), | |
201 | fFeedDownOpt(kTRUE), | |
202 | fFragmentation(kTRUE), | |
203 | fSetNuclei(kFALSE), | |
204 | fNewMIS(kFALSE), | |
205 | fHFoff(kFALSE), | |
20e47f08 | 206 | fNucPdf(0), |
e8a8adcd | 207 | fTriggerParticle(0), |
208 | fTriggerEta(0.9), | |
700b9416 | 209 | fTriggerMultiplicity(0), |
210 | fTriggerMultiplicityEta(0), | |
e8a8adcd | 211 | fCountMode(kCountAll), |
212 | fHeader(0), | |
213 | fRL(0), | |
ec2c406e | 214 | fFileName(0), |
9fd8e520 | 215 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 216 | fPi0InCalo(kFALSE) , |
90a236ce | 217 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 218 | fEleInEMCAL(kFALSE), |
9fd8e520 | 219 | fCheckEMCAL(kFALSE), |
220 | fCheckPHOS(kFALSE), | |
90a236ce | 221 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 222 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 223 | fPhotonMinPt(0), |
9dfe63b3 | 224 | fElectronMinPt(0), |
9fd8e520 | 225 | fPHOSMinPhi(219.), |
226 | fPHOSMaxPhi(321.), | |
227 | fPHOSEta(0.13), | |
228 | fEMCALMinPhi(79.), | |
229 | fEMCALMaxPhi(191.), | |
230 | fEMCALEta(0.71) | |
8d2cd130 | 231 | { |
232 | // default charm production at 5. 5 TeV | |
233 | // semimuonic decay | |
234 | // structure function GRVHO | |
235 | // | |
e7c989e4 | 236 | fEnergyCMS = 5500.; |
8d2cd130 | 237 | fName = "Pythia"; |
238 | fTitle= "Particle Generator using PYTHIA"; | |
8d2cd130 | 239 | SetForceDecay(); |
8d2cd130 | 240 | // Set random number generator |
7cdba479 | 241 | if (!AliPythiaRndm::GetPythiaRandom()) |
242 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
2d9f9817 | 243 | SetNuclei(0,0); |
76d6ba9a | 244 | } |
8d2cd130 | 245 | |
8d2cd130 | 246 | AliGenPythia::~AliGenPythia() |
247 | { | |
248 | // Destructor | |
9d7108a7 | 249 | if(fEventsTime) delete fEventsTime; |
250 | } | |
251 | ||
252 | void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow) | |
253 | { | |
254 | // Generate pileup using user specified rate | |
255 | fInteractionRate = rate; | |
256 | fTimeWindow = timewindow; | |
257 | GeneratePileup(); | |
258 | } | |
259 | ||
260 | void AliGenPythia::GeneratePileup() | |
261 | { | |
262 | // Generate sub events time for pileup | |
263 | fEventsTime = 0; | |
264 | if(fInteractionRate == 0.) { | |
265 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); | |
266 | return; | |
267 | } | |
268 | ||
269 | Int_t npart = NumberParticles(); | |
270 | if(npart < 0) { | |
271 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); | |
272 | return; | |
273 | } | |
274 | ||
275 | if(fEventsTime) delete fEventsTime; | |
276 | fEventsTime = new TArrayF(npart); | |
277 | TArrayF &array = *fEventsTime; | |
278 | for(Int_t ipart = 0; ipart < npart; ipart++) | |
279 | array[ipart] = 0.; | |
280 | ||
281 | Float_t eventtime = 0.; | |
282 | while(1) | |
283 | { | |
284 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
285 | if(eventtime > fTimeWindow) break; | |
286 | array.Set(array.GetSize()+1); | |
287 | array[array.GetSize()-1] = eventtime; | |
288 | } | |
289 | ||
290 | eventtime = 0.; | |
291 | while(1) | |
292 | { | |
293 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
294 | if(TMath::Abs(eventtime) > fTimeWindow) break; | |
295 | array.Set(array.GetSize()+1); | |
296 | array[array.GetSize()-1] = eventtime; | |
297 | } | |
298 | ||
299 | SetNumberParticles(fEventsTime->GetSize()); | |
8d2cd130 | 300 | } |
301 | ||
592f8307 | 302 | void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, |
303 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) | |
304 | { | |
305 | // Set pycell parameters | |
306 | fPycellEtaMax = etamax; | |
307 | fPycellNEta = neta; | |
308 | fPycellNPhi = nphi; | |
309 | fPycellThreshold = thresh; | |
310 | fPycellEtSeed = etseed; | |
311 | fPycellMinEtJet = minet; | |
312 | fPycellMaxRadius = r; | |
313 | } | |
314 | ||
315 | ||
316 | ||
8d2cd130 | 317 | void AliGenPythia::SetEventListRange(Int_t eventFirst, Int_t eventLast) |
318 | { | |
319 | // Set a range of event numbers, for which a table | |
320 | // of generated particle will be printed | |
321 | fDebugEventFirst = eventFirst; | |
322 | fDebugEventLast = eventLast; | |
323 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; | |
324 | } | |
325 | ||
326 | void AliGenPythia::Init() | |
327 | { | |
328 | // Initialisation | |
329 | ||
330 | SetMC(AliPythia::Instance()); | |
b88f5cea | 331 | fPythia=(AliPythia*) fMCEvGen; |
e2bddf81 | 332 | |
8d2cd130 | 333 | // |
334 | fParentWeight=1./Float_t(fNpart); | |
335 | // | |
8d2cd130 | 336 | |
337 | ||
338 | fPythia->SetCKIN(3,fPtHardMin); | |
339 | fPythia->SetCKIN(4,fPtHardMax); | |
340 | fPythia->SetCKIN(7,fYHardMin); | |
341 | fPythia->SetCKIN(8,fYHardMax); | |
342 | ||
20e47f08 | 343 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget, fNucPdf); |
8d2cd130 | 344 | // Fragmentation? |
345 | if (fFragmentation) { | |
346 | fPythia->SetMSTP(111,1); | |
347 | } else { | |
348 | fPythia->SetMSTP(111,0); | |
349 | } | |
350 | ||
351 | ||
352 | // initial state radiation | |
353 | fPythia->SetMSTP(61,fGinit); | |
354 | // final state radiation | |
355 | fPythia->SetMSTP(71,fGfinal); | |
356 | // pt - kick | |
357 | if (fPtKick > 0.) { | |
358 | fPythia->SetMSTP(91,1); | |
688950ef | 359 | fPythia->SetPARP(91,fPtKick); |
360 | fPythia->SetPARP(93, 4. * fPtKick); | |
8d2cd130 | 361 | } else { |
362 | fPythia->SetMSTP(91,0); | |
363 | } | |
364 | ||
5fa4b20b | 365 | |
366 | if (fReadFromFile) { | |
367 | fRL = AliRunLoader::Open(fFileName, "Partons"); | |
368 | fRL->LoadKinematics(); | |
369 | fRL->LoadHeader(); | |
370 | } else { | |
371 | fRL = 0x0; | |
372 | } | |
fdea4387 | 373 | // |
374 | fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc); | |
375 | // Forward Paramters to the AliPythia object | |
376 | fDecayer->SetForceDecay(fForceDecay); | |
beac474c | 377 | // Switch off Heavy Flavors on request |
378 | if (fHFoff) { | |
51387949 | 379 | // Maximum number of quark flavours used in pdf |
beac474c | 380 | fPythia->SetMSTP(58, 3); |
51387949 | 381 | // Maximum number of flavors that can be used in showers |
beac474c | 382 | fPythia->SetMSTJ(45, 3); |
51387949 | 383 | // Switch off g->QQbar splitting in decay table |
384 | ((AliDecayerPythia*) fDecayer)->HeavyFlavourOff(); | |
beac474c | 385 | } |
fdea4387 | 386 | |
51387949 | 387 | fDecayer->Init(); |
388 | ||
8d2cd130 | 389 | |
390 | // Parent and Children Selection | |
391 | switch (fProcess) | |
392 | { | |
65f2626c | 393 | case kPyOldUEQ2ordered: |
394 | case kPyOldUEQ2ordered2: | |
395 | case kPyOldPopcorn: | |
396 | break; | |
8d2cd130 | 397 | case kPyCharm: |
398 | case kPyCharmUnforced: | |
adf4d898 | 399 | case kPyCharmPbPbMNR: |
aabc7187 | 400 | case kPyCharmpPbMNR: |
e0e89f40 | 401 | case kPyCharmppMNR: |
402 | case kPyCharmppMNRwmi: | |
8d2cd130 | 403 | fParentSelect[0] = 411; |
404 | fParentSelect[1] = 421; | |
405 | fParentSelect[2] = 431; | |
406 | fParentSelect[3] = 4122; | |
9ccc3d0e | 407 | fParentSelect[4] = 4232; |
408 | fParentSelect[5] = 4132; | |
409 | fParentSelect[6] = 4332; | |
8d2cd130 | 410 | fFlavorSelect = 4; |
411 | break; | |
adf4d898 | 412 | case kPyD0PbPbMNR: |
413 | case kPyD0pPbMNR: | |
414 | case kPyD0ppMNR: | |
8d2cd130 | 415 | fParentSelect[0] = 421; |
416 | fFlavorSelect = 4; | |
417 | break; | |
90d7b703 | 418 | case kPyDPlusPbPbMNR: |
419 | case kPyDPluspPbMNR: | |
420 | case kPyDPlusppMNR: | |
421 | fParentSelect[0] = 411; | |
422 | fFlavorSelect = 4; | |
423 | break; | |
e0e89f40 | 424 | case kPyDPlusStrangePbPbMNR: |
425 | case kPyDPlusStrangepPbMNR: | |
426 | case kPyDPlusStrangeppMNR: | |
427 | fParentSelect[0] = 431; | |
428 | fFlavorSelect = 4; | |
429 | break; | |
8d2cd130 | 430 | case kPyBeauty: |
9dfe63b3 | 431 | case kPyBeautyJets: |
adf4d898 | 432 | case kPyBeautyPbPbMNR: |
433 | case kPyBeautypPbMNR: | |
434 | case kPyBeautyppMNR: | |
e0e89f40 | 435 | case kPyBeautyppMNRwmi: |
8d2cd130 | 436 | fParentSelect[0]= 511; |
437 | fParentSelect[1]= 521; | |
438 | fParentSelect[2]= 531; | |
439 | fParentSelect[3]= 5122; | |
440 | fParentSelect[4]= 5132; | |
441 | fParentSelect[5]= 5232; | |
442 | fParentSelect[6]= 5332; | |
443 | fFlavorSelect = 5; | |
444 | break; | |
445 | case kPyBeautyUnforced: | |
446 | fParentSelect[0] = 511; | |
447 | fParentSelect[1] = 521; | |
448 | fParentSelect[2] = 531; | |
449 | fParentSelect[3] = 5122; | |
450 | fParentSelect[4] = 5132; | |
451 | fParentSelect[5] = 5232; | |
452 | fParentSelect[6] = 5332; | |
453 | fFlavorSelect = 5; | |
454 | break; | |
455 | case kPyJpsiChi: | |
456 | case kPyJpsi: | |
457 | fParentSelect[0] = 443; | |
458 | break; | |
f529e69b | 459 | case kPyMbDefault: |
8d2cd130 | 460 | case kPyMb: |
04081a91 | 461 | case kPyMbWithDirectPhoton: |
8d2cd130 | 462 | case kPyMbNonDiffr: |
d7de4a67 | 463 | case kPyMbMSEL1: |
8d2cd130 | 464 | case kPyJets: |
465 | case kPyDirectGamma: | |
e33acb67 | 466 | case kPyLhwgMb: |
8d2cd130 | 467 | break; |
589380c6 | 468 | case kPyW: |
0f6ee828 | 469 | case kPyZ: |
589380c6 | 470 | break; |
8d2cd130 | 471 | } |
472 | // | |
592f8307 | 473 | // |
474 | // JetFinder for Trigger | |
475 | // | |
476 | // Configure detector (EMCAL like) | |
477 | // | |
d7de4a67 | 478 | fPythia->SetPARU(51, fPycellEtaMax); |
479 | fPythia->SetMSTU(51, fPycellNEta); | |
480 | fPythia->SetMSTU(52, fPycellNPhi); | |
592f8307 | 481 | // |
482 | // Configure Jet Finder | |
483 | // | |
d7de4a67 | 484 | fPythia->SetPARU(58, fPycellThreshold); |
485 | fPythia->SetPARU(52, fPycellEtSeed); | |
486 | fPythia->SetPARU(53, fPycellMinEtJet); | |
487 | fPythia->SetPARU(54, fPycellMaxRadius); | |
488 | fPythia->SetMSTU(54, 2); | |
592f8307 | 489 | // |
8d2cd130 | 490 | // This counts the total number of calls to Pyevnt() per run. |
491 | fTrialsRun = 0; | |
492 | fQ = 0.; | |
493 | fX1 = 0.; | |
494 | fX2 = 0.; | |
495 | fNev = 0 ; | |
496 | // | |
1d568bc2 | 497 | // |
498 | // | |
8d2cd130 | 499 | AliGenMC::Init(); |
1d568bc2 | 500 | // |
501 | // | |
502 | // | |
503 | if (fSetNuclei) { | |
504 | fDyBoost = 0; | |
505 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
506 | } | |
d7de4a67 | 507 | |
cd07c39b | 508 | fPythia->SetPARJ(200, 0.0); |
509 | fPythia->SetPARJ(199, 0.0); | |
510 | fPythia->SetPARJ(198, 0.0); | |
511 | fPythia->SetPARJ(197, 0.0); | |
512 | ||
513 | if (fQuench == 1) { | |
5fa4b20b | 514 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0); |
32d6ef7d | 515 | } |
3a709cfa | 516 | |
b976f7d8 | 517 | if (fQuench == 3) { |
518 | // Nestor's change of the splittings | |
519 | fPythia->SetPARJ(200, 0.8); | |
520 | fPythia->SetMSTJ(41, 1); // QCD radiation only | |
521 | fPythia->SetMSTJ(42, 2); // angular ordering | |
522 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
523 | fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
524 | fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
525 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
cd07c39b | 526 | } else if (fQuench == 4) { |
527 | // Armesto-Cunqueiro-Salgado change of the splittings. | |
528 | AliFastGlauber* glauber = AliFastGlauber::Instance(); | |
529 | glauber->Init(2); | |
530 | //read and store transverse almonds corresponding to differnt | |
531 | //impact parameters. | |
cd07c39b | 532 | glauber->SetCentralityClass(0.,0.1); |
533 | fPythia->SetPARJ(200, 1.); | |
534 | fPythia->SetPARJ(198, fQhat); | |
535 | fPythia->SetPARJ(199, fLength); | |
536 | ||
537 | fPythia->SetMSTJ(41, 1); // QCD radiation only | |
538 | fPythia->SetMSTJ(42, 2); // angular ordering | |
539 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
540 | //fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
541 | //fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
542 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
543 | // MSTJ(41) must NOT be 11 or 12, as then FSR may go through PYPTFS | |
544 | // (kt-ordered cascade) in which medium effects have not been introduced. | |
b976f7d8 | 545 | } |
8d2cd130 | 546 | } |
547 | ||
548 | void AliGenPythia::Generate() | |
549 | { | |
550 | // Generate one event | |
19ef8cf0 | 551 | if (!fPythia) fPythia=(AliPythia*) fMCEvGen; |
8d2cd130 | 552 | fDecayer->ForceDecay(); |
553 | ||
554 | Float_t polar[3] = {0,0,0}; | |
555 | Float_t origin[3] = {0,0,0}; | |
a920faf9 | 556 | Float_t p[4]; |
8d2cd130 | 557 | // converts from mm/c to s |
558 | const Float_t kconv=0.001/2.999792458e8; | |
559 | // | |
560 | Int_t nt=0; | |
561 | Int_t jev=0; | |
562 | Int_t j, kf; | |
563 | fTrials=0; | |
f913ec4f | 564 | fEventTime = 0.; |
565 | ||
2590ccf9 | 566 | |
8d2cd130 | 567 | |
568 | // Set collision vertex position | |
2590ccf9 | 569 | if (fVertexSmear == kPerEvent) Vertex(); |
570 | ||
8d2cd130 | 571 | // event loop |
572 | while(1) | |
573 | { | |
32d6ef7d | 574 | // |
5fa4b20b | 575 | // Produce event |
32d6ef7d | 576 | // |
32d6ef7d | 577 | // |
5fa4b20b | 578 | // Switch hadronisation off |
579 | // | |
580 | fPythia->SetMSTJ(1, 0); | |
cd07c39b | 581 | |
582 | if (fQuench ==4){ | |
583 | Double_t bimp; | |
584 | // Quenching comes through medium-modified splitting functions. | |
585 | AliFastGlauber::Instance()->GetRandomBHard(bimp); | |
586 | fPythia->SetPARJ(197,bimp); | |
587 | } | |
32d6ef7d | 588 | // |
5fa4b20b | 589 | // Either produce new event or read partons from file |
590 | // | |
591 | if (!fReadFromFile) { | |
beac474c | 592 | if (!fNewMIS) { |
593 | fPythia->Pyevnt(); | |
594 | } else { | |
595 | fPythia->Pyevnw(); | |
596 | } | |
5fa4b20b | 597 | fNpartons = fPythia->GetN(); |
598 | } else { | |
33c3c91a | 599 | printf("Loading Event %d\n",AliRunLoader::Instance()->GetEventNumber()); |
600 | fRL->GetEvent(AliRunLoader::Instance()->GetEventNumber()); | |
5fa4b20b | 601 | fPythia->SetN(0); |
602 | LoadEvent(fRL->Stack(), 0 , 1); | |
603 | fPythia->Pyedit(21); | |
604 | } | |
605 | ||
32d6ef7d | 606 | // |
607 | // Run quenching routine | |
608 | // | |
5fa4b20b | 609 | if (fQuench == 1) { |
610 | fPythia->Quench(); | |
611 | } else if (fQuench == 2){ | |
612 | fPythia->Pyquen(208., 0, 0.); | |
b976f7d8 | 613 | } else if (fQuench == 3) { |
614 | // Quenching is via multiplicative correction of the splittings | |
5fa4b20b | 615 | } |
b976f7d8 | 616 | |
32d6ef7d | 617 | // |
5fa4b20b | 618 | // Switch hadronisation on |
32d6ef7d | 619 | // |
20e47f08 | 620 | if (fHadronisation) { |
621 | fPythia->SetMSTJ(1, 1); | |
5fa4b20b | 622 | // |
623 | // .. and perform hadronisation | |
aea21c57 | 624 | // printf("Calling hadronisation %d\n", fPythia->GetN()); |
20e47f08 | 625 | fPythia->Pyexec(); |
626 | } | |
8d2cd130 | 627 | fTrials++; |
8507138f | 628 | fPythia->ImportParticles(&fParticles,"All"); |
1d568bc2 | 629 | Boost(); |
8d2cd130 | 630 | // |
631 | // | |
632 | // | |
633 | Int_t i; | |
634 | ||
dbd64db6 | 635 | fNprimaries = 0; |
8507138f | 636 | Int_t np = fParticles.GetEntriesFast(); |
5fa4b20b | 637 | |
7c21f297 | 638 | if (np == 0) continue; |
8d2cd130 | 639 | // |
2590ccf9 | 640 | |
8d2cd130 | 641 | // |
642 | Int_t* pParent = new Int_t[np]; | |
643 | Int_t* pSelected = new Int_t[np]; | |
644 | Int_t* trackIt = new Int_t[np]; | |
5fa4b20b | 645 | for (i = 0; i < np; i++) { |
8d2cd130 | 646 | pParent[i] = -1; |
647 | pSelected[i] = 0; | |
648 | trackIt[i] = 0; | |
649 | } | |
650 | ||
651 | Int_t nc = 0; // Total n. of selected particles | |
652 | Int_t nParents = 0; // Selected parents | |
653 | Int_t nTkbles = 0; // Trackable particles | |
f529e69b | 654 | if (fProcess != kPyMbDefault && |
655 | fProcess != kPyMb && | |
04081a91 | 656 | fProcess != kPyMbWithDirectPhoton && |
f529e69b | 657 | fProcess != kPyJets && |
8d2cd130 | 658 | fProcess != kPyDirectGamma && |
589380c6 | 659 | fProcess != kPyMbNonDiffr && |
d7de4a67 | 660 | fProcess != kPyMbMSEL1 && |
f529e69b | 661 | fProcess != kPyW && |
662 | fProcess != kPyZ && | |
663 | fProcess != kPyCharmppMNRwmi && | |
9dfe63b3 | 664 | fProcess != kPyBeautyppMNRwmi && |
665 | fProcess != kPyBeautyJets) { | |
8d2cd130 | 666 | |
5fa4b20b | 667 | for (i = 0; i < np; i++) { |
8507138f | 668 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 669 | Int_t ks = iparticle->GetStatusCode(); |
670 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
671 | // No initial state partons | |
672 | if (ks==21) continue; | |
673 | // | |
674 | // Heavy Flavor Selection | |
675 | // | |
676 | // quark ? | |
677 | kf = TMath::Abs(kf); | |
678 | Int_t kfl = kf; | |
9ff6c04c | 679 | // Resonance |
f913ec4f | 680 | |
9ff6c04c | 681 | if (kfl > 100000) kfl %= 100000; |
183a5ca9 | 682 | if (kfl > 10000) kfl %= 10000; |
8d2cd130 | 683 | // meson ? |
684 | if (kfl > 10) kfl/=100; | |
685 | // baryon | |
686 | if (kfl > 10) kfl/=10; | |
8d2cd130 | 687 | Int_t ipa = iparticle->GetFirstMother()-1; |
688 | Int_t kfMo = 0; | |
f913ec4f | 689 | // |
690 | // Establish mother daughter relation between heavy quarks and mesons | |
691 | // | |
692 | if (kf >= fFlavorSelect && kf <= 6) { | |
693 | Int_t idau = iparticle->GetFirstDaughter() - 1; | |
694 | if (idau > -1) { | |
8507138f | 695 | TParticle* daughter = (TParticle *) fParticles.At(idau); |
f913ec4f | 696 | Int_t pdgD = daughter->GetPdgCode(); |
697 | if (pdgD == 91 || pdgD == 92) { | |
698 | Int_t jmin = daughter->GetFirstDaughter() - 1; | |
699 | Int_t jmax = daughter->GetLastDaughter() - 1; | |
2ab330c9 | 700 | for (Int_t jp = jmin; jp <= jmax; jp++) |
701 | ((TParticle *) fParticles.At(jp))->SetFirstMother(i+1); | |
f913ec4f | 702 | } // is string or cluster |
703 | } // has daughter | |
704 | } // heavy quark | |
8d2cd130 | 705 | |
f913ec4f | 706 | |
8d2cd130 | 707 | if (ipa > -1) { |
8507138f | 708 | TParticle * mother = (TParticle *) fParticles.At(ipa); |
8d2cd130 | 709 | kfMo = TMath::Abs(mother->GetPdgCode()); |
710 | } | |
f913ec4f | 711 | |
8d2cd130 | 712 | // What to keep in Stack? |
713 | Bool_t flavorOK = kFALSE; | |
714 | Bool_t selectOK = kFALSE; | |
715 | if (fFeedDownOpt) { | |
32d6ef7d | 716 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 | 717 | } else { |
32d6ef7d | 718 | if (kfl > fFlavorSelect) { |
719 | nc = -1; | |
720 | break; | |
721 | } | |
722 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
8d2cd130 | 723 | } |
724 | switch (fStackFillOpt) { | |
725 | case kFlavorSelection: | |
32d6ef7d | 726 | selectOK = kTRUE; |
727 | break; | |
8d2cd130 | 728 | case kParentSelection: |
32d6ef7d | 729 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; |
730 | break; | |
8d2cd130 | 731 | } |
732 | if (flavorOK && selectOK) { | |
733 | // | |
734 | // Heavy flavor hadron or quark | |
735 | // | |
736 | // Kinematic seletion on final state heavy flavor mesons | |
737 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
738 | { | |
9ff6c04c | 739 | continue; |
8d2cd130 | 740 | } |
741 | pSelected[i] = 1; | |
742 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
743 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
744 | } else { | |
745 | // Kinematic seletion on decay products | |
746 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
9ff6c04c | 747 | && !KinematicSelection(iparticle, 1)) |
8d2cd130 | 748 | { |
9ff6c04c | 749 | continue; |
8d2cd130 | 750 | } |
751 | // | |
752 | // Decay products | |
753 | // Select if mother was selected and is not tracked | |
754 | ||
755 | if (pSelected[ipa] && | |
756 | !trackIt[ipa] && // mother will be tracked ? | |
757 | kfMo != 5 && // mother is b-quark, don't store fragments | |
758 | kfMo != 4 && // mother is c-quark, don't store fragments | |
759 | kf != 92) // don't store string | |
760 | { | |
761 | // | |
762 | // Semi-stable or de-selected: diselect decay products: | |
763 | // | |
764 | // | |
765 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
766 | { | |
767 | Int_t ipF = iparticle->GetFirstDaughter(); | |
768 | Int_t ipL = iparticle->GetLastDaughter(); | |
769 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
770 | } | |
771 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
772 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
773 | } | |
774 | } | |
775 | if (pSelected[i] == -1) pSelected[i] = 0; | |
776 | if (!pSelected[i]) continue; | |
777 | // Count quarks only if you did not include fragmentation | |
778 | if (fFragmentation && kf <= 10) continue; | |
9ff6c04c | 779 | |
8d2cd130 | 780 | nc++; |
781 | // Decision on tracking | |
782 | trackIt[i] = 0; | |
783 | // | |
784 | // Track final state particle | |
785 | if (ks == 1) trackIt[i] = 1; | |
786 | // Track semi-stable particles | |
d25cfd65 | 787 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; |
8d2cd130 | 788 | // Track particles selected by process if undecayed. |
789 | if (fForceDecay == kNoDecay) { | |
790 | if (ParentSelected(kf)) trackIt[i] = 1; | |
791 | } else { | |
792 | if (ParentSelected(kf)) trackIt[i] = 0; | |
793 | } | |
794 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
795 | // | |
796 | // | |
797 | ||
798 | } // particle selection loop | |
799 | if (nc > 0) { | |
800 | for (i = 0; i<np; i++) { | |
801 | if (!pSelected[i]) continue; | |
8507138f | 802 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 803 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
804 | Int_t ks = iparticle->GetStatusCode(); | |
805 | p[0] = iparticle->Px(); | |
806 | p[1] = iparticle->Py(); | |
807 | p[2] = iparticle->Pz(); | |
a920faf9 | 808 | p[3] = iparticle->Energy(); |
809 | ||
2590ccf9 | 810 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
811 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
812 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
813 | ||
8d2cd130 | 814 | Float_t tof = kconv*iparticle->T(); |
815 | Int_t ipa = iparticle->GetFirstMother()-1; | |
816 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
a920faf9 | 817 | |
818 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
819 | p[0], p[1], p[2], p[3], | |
820 | origin[0], origin[1], origin[2], tof, | |
821 | polar[0], polar[1], polar[2], | |
822 | kPPrimary, nt, 1., ks); | |
8d2cd130 | 823 | pParent[i] = nt; |
dbd64db6 | 824 | KeepTrack(nt); |
825 | fNprimaries++; | |
642f15cf | 826 | } // PushTrack loop |
8d2cd130 | 827 | } |
828 | } else { | |
829 | nc = GenerateMB(); | |
830 | } // mb ? | |
f913ec4f | 831 | |
832 | GetSubEventTime(); | |
8d2cd130 | 833 | |
234f6d32 | 834 | delete[] pParent; |
835 | delete[] pSelected; | |
836 | delete[] trackIt; | |
8d2cd130 | 837 | |
838 | if (nc > 0) { | |
839 | switch (fCountMode) { | |
840 | case kCountAll: | |
841 | // printf(" Count all \n"); | |
842 | jev += nc; | |
843 | break; | |
844 | case kCountParents: | |
845 | // printf(" Count parents \n"); | |
846 | jev += nParents; | |
847 | break; | |
848 | case kCountTrackables: | |
849 | // printf(" Count trackable \n"); | |
850 | jev += nTkbles; | |
851 | break; | |
852 | } | |
853 | if (jev >= fNpart || fNpart == -1) { | |
854 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
e0e89f40 | 855 | |
8d2cd130 | 856 | fQ += fPythia->GetVINT(51); |
857 | fX1 += fPythia->GetVINT(41); | |
858 | fX2 += fPythia->GetVINT(42); | |
859 | fTrialsRun += fTrials; | |
860 | fNev++; | |
861 | MakeHeader(); | |
862 | break; | |
863 | } | |
864 | } | |
865 | } // event loop | |
866 | SetHighWaterMark(nt); | |
867 | // adjust weight due to kinematic selection | |
b88f5cea | 868 | // AdjustWeights(); |
8d2cd130 | 869 | // get cross-section |
870 | fXsection=fPythia->GetPARI(1); | |
871 | } | |
872 | ||
873 | Int_t AliGenPythia::GenerateMB() | |
874 | { | |
875 | // | |
876 | // Min Bias selection and other global selections | |
877 | // | |
878 | Int_t i, kf, nt, iparent; | |
879 | Int_t nc = 0; | |
bf950da8 | 880 | Float_t p[4]; |
8d2cd130 | 881 | Float_t polar[3] = {0,0,0}; |
882 | Float_t origin[3] = {0,0,0}; | |
883 | // converts from mm/c to s | |
884 | const Float_t kconv=0.001/2.999792458e8; | |
885 | ||
e0e89f40 | 886 | |
887 | ||
8507138f | 888 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
aea21c57 | 889 | |
5fa4b20b | 890 | |
e0e89f40 | 891 | |
8d2cd130 | 892 | Int_t* pParent = new Int_t[np]; |
893 | for (i=0; i< np; i++) pParent[i] = -1; | |
9dfe63b3 | 894 | // |
895 | //TO BE CHECKED: Should we require this for Beauty Jets? | |
896 | // | |
897 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets) { | |
8507138f | 898 | TParticle* jet1 = (TParticle *) fParticles.At(6); |
899 | TParticle* jet2 = (TParticle *) fParticles.At(7); | |
234f6d32 | 900 | if (!CheckTrigger(jet1, jet2)) { |
901 | delete [] pParent; | |
902 | return 0; | |
903 | } | |
8d2cd130 | 904 | } |
e0e89f40 | 905 | |
9fd8e520 | 906 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL |
907 | if (fProcess == kPyJets && (fFragPhotonInCalo || fPi0InCalo) ) { | |
ec2c406e | 908 | |
909 | Bool_t ok = kFALSE; | |
910 | ||
911 | Int_t pdg = 0; | |
9fd8e520 | 912 | if (fFragPhotonInCalo) pdg = 22 ; // Photon |
82e0bdff | 913 | else if (fPi0InCalo) pdg = 111 ; // Pi0 |
ec2c406e | 914 | |
915 | for (i=0; i< np; i++) { | |
8507138f | 916 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
ec2c406e | 917 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && |
9fd8e520 | 918 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ |
562cbbcf | 919 | Int_t imother = iparticle->GetFirstMother() - 1; |
8507138f | 920 | TParticle* pmother = (TParticle *) fParticles.At(imother); |
9fd8e520 | 921 | if(pdg == 111 || |
82e0bdff | 922 | (pdg == 22 && pmother->GetStatusCode() != 11)) //No photon from hadron decay |
9fd8e520 | 923 | { |
924 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
82e0bdff | 925 | Float_t eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax |
9fd8e520 | 926 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || |
927 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
928 | ok =kTRUE; | |
929 | } | |
ec2c406e | 930 | } |
931 | } | |
932 | if(!ok) | |
933 | return 0; | |
934 | } | |
9dfe63b3 | 935 | |
936 | // Select beauty jets with electron in EMCAL | |
937 | if (fProcess == kPyBeautyJets && fEleInEMCAL) { | |
938 | ||
939 | Bool_t ok = kFALSE; | |
940 | ||
941 | Int_t pdg = 11; //electron | |
942 | ||
943 | Float_t pt, eta, phi; | |
944 | for (i=0; i< np; i++) { | |
945 | TParticle* iparticle = (TParticle *) fParticles.At(i); | |
946 | if(iparticle->GetStatusCode()==1 && TMath::Abs(iparticle->GetPdgCode())==pdg && | |
947 | iparticle->Pt() > fElectronMinPt){ | |
948 | pt = iparticle->Pt(); | |
949 | phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
950 | eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax | |
951 | if(IsInEMCAL(phi,eta)) | |
952 | ok =kTRUE; | |
953 | } | |
954 | } | |
955 | if(!ok) | |
956 | return 0; | |
957 | AliDebug(5,Form("Found an electron jet (pt,eta,phi) = (%f,%f,%f)",pt,eta,phi)); | |
958 | } | |
ec2c406e | 959 | |
700b9416 | 960 | // Check for minimum multiplicity |
961 | if (fTriggerMultiplicity > 0) { | |
962 | Int_t multiplicity = 0; | |
963 | for (i = 0; i < np; i++) { | |
8507138f | 964 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
700b9416 | 965 | |
966 | Int_t statusCode = iparticle->GetStatusCode(); | |
967 | ||
968 | // Initial state particle | |
969 | if (statusCode > 20) | |
970 | continue; | |
971 | ||
972 | // skip quarks and gluons | |
973 | Int_t pdgCode = TMath::Abs(iparticle->GetPdgCode()); | |
974 | if (pdgCode <= 10 || pdgCode == 21) | |
975 | continue; | |
976 | ||
977 | if (fTriggerMultiplicityEta > 0 && TMath::Abs(iparticle->Eta()) > fTriggerMultiplicityEta) | |
978 | continue; | |
979 | ||
980 | TParticlePDG* pdgPart = iparticle->GetPDG(); | |
981 | if (pdgPart && pdgPart->Charge() == 0) | |
982 | continue; | |
983 | ||
984 | ++multiplicity; | |
985 | } | |
986 | ||
987 | if (multiplicity < fTriggerMultiplicity) { | |
988 | delete [] pParent; | |
989 | return 0; | |
990 | } | |
991 | ||
992 | Printf("Triggered on event with multiplicity of %d > %d", multiplicity, fTriggerMultiplicity); | |
993 | } | |
90a236ce | 994 | |
995 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
996 | if ((fProcess == kPyJets || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ | |
997 | ||
998 | Bool_t okd = kFALSE; | |
999 | ||
1000 | Int_t pdg = 22; | |
1001 | Int_t iphcand = -1; | |
1002 | for (i=0; i< np; i++) { | |
8507138f | 1003 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1004 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees |
1005 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
1006 | ||
1007 | if(iparticle->GetStatusCode() == 1 | |
1008 | && iparticle->GetPdgCode() == pdg | |
1009 | && iparticle->Pt() > fPhotonMinPt | |
04a26b0a | 1010 | && eta < fPHOSEta){ |
90a236ce | 1011 | |
1012 | // first check if the photon is in PHOS phi | |
1013 | if(IsInPHOS(phi,eta)){ | |
1014 | okd = kTRUE; | |
1015 | break; | |
1016 | } | |
1017 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
1018 | ||
1019 | } | |
1020 | } | |
1021 | ||
1022 | if(!okd && iphcand != -1) // execute rotation in phi | |
1023 | RotatePhi(iphcand,okd); | |
1024 | ||
1025 | if(!okd) | |
1026 | return 0; | |
1027 | } | |
1028 | ||
7ce1321b | 1029 | if (fTriggerParticle) { |
1030 | Bool_t triggered = kFALSE; | |
1031 | for (i = 0; i < np; i++) { | |
8507138f | 1032 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
7ce1321b | 1033 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
38db0ee6 | 1034 | if (kf != fTriggerParticle) continue; |
7ce1321b | 1035 | if (iparticle->Pt() == 0.) continue; |
1036 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
1037 | triggered = kTRUE; | |
1038 | break; | |
1039 | } | |
234f6d32 | 1040 | if (!triggered) { |
1041 | delete [] pParent; | |
1042 | return 0; | |
1043 | } | |
7ce1321b | 1044 | } |
e0e89f40 | 1045 | |
1046 | ||
1047 | // Check if there is a ccbar or bbbar pair with at least one of the two | |
1048 | // in fYMin < y < fYMax | |
9dfe63b3 | 1049 | // |
1050 | // TO BE CHECKED: Should we require this for beauty jets? | |
1051 | // | |
1052 | if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi || fProcess == kPyBeautyJets) { | |
9ccc3d0e | 1053 | TParticle *partCheck; |
1054 | TParticle *mother; | |
e0e89f40 | 1055 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; |
9ccc3d0e | 1056 | Bool_t theChild=kFALSE; |
1057 | Float_t y; | |
1058 | Int_t pdg,mpdg,mpdgUpperFamily; | |
e0e89f40 | 1059 | for(i=0; i<np; i++) { |
9ccc3d0e | 1060 | partCheck = (TParticle*)fParticles.At(i); |
1061 | pdg = partCheck->GetPdgCode(); | |
1062 | if(TMath::Abs(pdg) == fFlavorSelect) { // quark | |
1063 | if(pdg>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
1064 | y = 0.5*TMath::Log((partCheck->Energy()+partCheck->Pz()+1.e-13)/ | |
1065 | (partCheck->Energy()-partCheck->Pz()+1.e-13)); | |
1066 | if(y>fYMin && y<fYMax) inYcut=kTRUE; | |
1067 | } | |
1068 | if(fCutOnChild && TMath::Abs(pdg) == fPdgCodeParticleforAcceptanceCut) { | |
1069 | Int_t mi = partCheck->GetFirstMother() - 1; | |
1070 | if(mi<0) continue; | |
1071 | mother = (TParticle*)fParticles.At(mi); | |
1072 | mpdg=TMath::Abs(mother->GetPdgCode()); | |
75fde694 | 1073 | mpdgUpperFamily=(mpdg>1000 ? mpdg+1000 : mpdg+100); // keep e from c from b |
9ccc3d0e | 1074 | if ( ParentSelected(mpdg) || |
1075 | (fFlavorSelect==5 && ParentSelected(mpdgUpperFamily))) { | |
1076 | if (KinematicSelection(partCheck,1)) { | |
1077 | theChild=kTRUE; | |
1078 | } | |
1079 | } | |
1080 | } | |
e0e89f40 | 1081 | } |
9ccc3d0e | 1082 | if (!theQ || !theQbar || !inYcut) { // one of the c/b conditions not satisfied |
234f6d32 | 1083 | delete[] pParent; |
e0e89f40 | 1084 | return 0; |
1085 | } | |
9ccc3d0e | 1086 | if (fCutOnChild && !theChild) { // one of the child conditions not satisfied |
1087 | delete[] pParent; | |
1088 | return 0; | |
1089 | } | |
1090 | ||
e0e89f40 | 1091 | } |
aea21c57 | 1092 | |
0f6ee828 | 1093 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff |
f529e69b | 1094 | if ( (fProcess == kPyW || |
1095 | fProcess == kPyZ || | |
1096 | fProcess == kPyMbDefault || | |
1097 | fProcess == kPyMb || | |
04081a91 | 1098 | fProcess == kPyMbWithDirectPhoton || |
f529e69b | 1099 | fProcess == kPyMbNonDiffr) |
0f6ee828 | 1100 | && (fCutOnChild == 1) ) { |
1101 | if ( !CheckKinematicsOnChild() ) { | |
234f6d32 | 1102 | delete[] pParent; |
0f6ee828 | 1103 | return 0; |
1104 | } | |
aea21c57 | 1105 | } |
1106 | ||
1107 | ||
f913ec4f | 1108 | for (i = 0; i < np; i++) { |
8d2cd130 | 1109 | Int_t trackIt = 0; |
8507138f | 1110 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 1111 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
1112 | Int_t ks = iparticle->GetStatusCode(); | |
1113 | Int_t km = iparticle->GetFirstMother(); | |
1114 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
1115 | (ks != 1) || | |
9dfe63b3 | 1116 | // |
1117 | //TO BE CHECKED: Should we require this for beauty jets? | |
1118 | // | |
1119 | ((fProcess == kPyJets || fProcess == kPyBeautyJets) && ks == 21 && km == 0 && i>1)) { | |
8d2cd130 | 1120 | nc++; |
1121 | if (ks == 1) trackIt = 1; | |
1122 | Int_t ipa = iparticle->GetFirstMother()-1; | |
1123 | ||
1124 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
1125 | ||
1126 | // | |
1127 | // store track information | |
1128 | p[0] = iparticle->Px(); | |
1129 | p[1] = iparticle->Py(); | |
1130 | p[2] = iparticle->Pz(); | |
a920faf9 | 1131 | p[3] = iparticle->Energy(); |
1406f599 | 1132 | |
a920faf9 | 1133 | |
2590ccf9 | 1134 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
1135 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
1136 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
1137 | ||
f913ec4f | 1138 | Float_t tof = fEventTime + kconv * iparticle->T(); |
a920faf9 | 1139 | |
1140 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
1141 | p[0], p[1], p[2], p[3], | |
1142 | origin[0], origin[1], origin[2], tof, | |
1143 | polar[0], polar[1], polar[2], | |
1144 | kPPrimary, nt, 1., ks); | |
dbd64db6 | 1145 | fNprimaries++; |
8d2cd130 | 1146 | KeepTrack(nt); |
1147 | pParent[i] = nt; | |
f913ec4f | 1148 | SetHighWaterMark(nt); |
1149 | ||
8d2cd130 | 1150 | } // select particle |
1151 | } // particle loop | |
1152 | ||
234f6d32 | 1153 | delete[] pParent; |
e0e89f40 | 1154 | |
f913ec4f | 1155 | return 1; |
8d2cd130 | 1156 | } |
1157 | ||
1158 | ||
1159 | void AliGenPythia::FinishRun() | |
1160 | { | |
1161 | // Print x-section summary | |
1162 | fPythia->Pystat(1); | |
2779fc64 | 1163 | |
1164 | if (fNev > 0.) { | |
1165 | fQ /= fNev; | |
1166 | fX1 /= fNev; | |
1167 | fX2 /= fNev; | |
1168 | } | |
1169 | ||
8d2cd130 | 1170 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); |
1171 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
8d2cd130 | 1172 | } |
1173 | ||
7184e472 | 1174 | void AliGenPythia::AdjustWeights() const |
8d2cd130 | 1175 | { |
1176 | // Adjust the weights after generation of all events | |
1177 | // | |
e2bddf81 | 1178 | if (gAlice) { |
1179 | TParticle *part; | |
1180 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1181 | for (Int_t i=0; i<ntrack; i++) { | |
1182 | part= gAlice->GetMCApp()->Particle(i); | |
1183 | part->SetWeight(part->GetWeight()*fKineBias); | |
1184 | } | |
8d2cd130 | 1185 | } |
1186 | } | |
1187 | ||
20e47f08 | 1188 | void AliGenPythia::SetNuclei(Int_t a1, Int_t a2, Int_t pdfset) |
8d2cd130 | 1189 | { |
1190 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1d568bc2 | 1191 | |
1a626d4e | 1192 | fAProjectile = a1; |
1193 | fATarget = a2; | |
20e47f08 | 1194 | fNucPdf = pdfset; // 0 EKS98 1 EPS08 |
1d568bc2 | 1195 | fSetNuclei = kTRUE; |
8d2cd130 | 1196 | } |
1197 | ||
1198 | ||
1199 | void AliGenPythia::MakeHeader() | |
1200 | { | |
7184e472 | 1201 | // |
1202 | // Make header for the simulated event | |
1203 | // | |
183a5ca9 | 1204 | if (gAlice) { |
1205 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
f913ec4f | 1206 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2); |
183a5ca9 | 1207 | } |
1208 | ||
8d2cd130 | 1209 | // Builds the event header, to be called after each event |
e5c87a3d | 1210 | if (fHeader) delete fHeader; |
1211 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
8d2cd130 | 1212 | // |
1213 | // Event type | |
e5c87a3d | 1214 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1)); |
8d2cd130 | 1215 | // |
1216 | // Number of trials | |
e5c87a3d | 1217 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); |
8d2cd130 | 1218 | // |
1219 | // Event Vertex | |
d25cfd65 | 1220 | fHeader->SetPrimaryVertex(fVertex); |
dbd64db6 | 1221 | |
1222 | // | |
1223 | // Number of primaries | |
1224 | fHeader->SetNProduced(fNprimaries); | |
8d2cd130 | 1225 | // |
1226 | // Jets that have triggered | |
f913ec4f | 1227 | |
9dfe63b3 | 1228 | //Need to store jets for b-jet studies too! |
1229 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets) | |
8d2cd130 | 1230 | { |
1231 | Int_t ntrig, njet; | |
1232 | Float_t jets[4][10]; | |
1233 | GetJets(njet, ntrig, jets); | |
9ff6c04c | 1234 | |
8d2cd130 | 1235 | |
1236 | for (Int_t i = 0; i < ntrig; i++) { | |
e5c87a3d | 1237 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], |
8d2cd130 | 1238 | jets[3][i]); |
1239 | } | |
1240 | } | |
5fa4b20b | 1241 | // |
1242 | // Copy relevant information from external header, if present. | |
1243 | // | |
1244 | Float_t uqJet[4]; | |
1245 | ||
1246 | if (fRL) { | |
1247 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1248 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1249 | { | |
1250 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1251 | ||
1252 | ||
1253 | exHeader->TriggerJet(i, uqJet); | |
1254 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1255 | } | |
1256 | } | |
1257 | // | |
1258 | // Store quenching parameters | |
1259 | // | |
1260 | if (fQuench){ | |
1261 | Double_t z[4]; | |
1262 | Double_t xp, yp; | |
7c21f297 | 1263 | if (fQuench == 1) { |
1264 | // Pythia::Quench() | |
1265 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1bab4b79 | 1266 | } else if (fQuench == 2){ |
7c21f297 | 1267 | // Pyquen |
1268 | Double_t r1 = PARIMP.rb1; | |
1269 | Double_t r2 = PARIMP.rb2; | |
1270 | Double_t b = PARIMP.b1; | |
1271 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1272 | Double_t phi = PARIMP.psib1; | |
1273 | xp = r * TMath::Cos(phi); | |
1274 | yp = r * TMath::Sin(phi); | |
1275 | ||
1bab4b79 | 1276 | } else if (fQuench == 4) { |
1277 | // QPythia | |
5831e75f | 1278 | Double_t xy[2]; |
e9719084 | 1279 | Double_t i0i1[2]; |
1280 | AliFastGlauber::Instance()->GetSavedXY(xy); | |
1281 | AliFastGlauber::Instance()->GetSavedI0I1(i0i1); | |
5831e75f | 1282 | xp = xy[0]; |
1283 | yp = xy[1]; | |
e9719084 | 1284 | ((AliGenPythiaEventHeader*) fHeader)->SetInMediumLength(2. * i0i1[1] / i0i1[0]); |
7c21f297 | 1285 | } |
1bab4b79 | 1286 | |
7c21f297 | 1287 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); |
1288 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1bab4b79 | 1289 | } |
beac474c | 1290 | // |
1291 | // Store pt^hard | |
1292 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47)); | |
5fa4b20b | 1293 | // |
cf57b268 | 1294 | // Pass header |
5fa4b20b | 1295 | // |
cf57b268 | 1296 | AddHeader(fHeader); |
4c4eac97 | 1297 | fHeader = 0x0; |
8d2cd130 | 1298 | } |
cf57b268 | 1299 | |
8d2cd130 | 1300 | Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2) |
1301 | { | |
1302 | // Check the kinematic trigger condition | |
1303 | // | |
1304 | Double_t eta[2]; | |
1305 | eta[0] = jet1->Eta(); | |
1306 | eta[1] = jet2->Eta(); | |
1307 | Double_t phi[2]; | |
1308 | phi[0] = jet1->Phi(); | |
1309 | phi[1] = jet2->Phi(); | |
1310 | Int_t pdg[2]; | |
1311 | pdg[0] = jet1->GetPdgCode(); | |
1312 | pdg[1] = jet2->GetPdgCode(); | |
1313 | Bool_t triggered = kFALSE; | |
1314 | ||
9dfe63b3 | 1315 | // |
1316 | //TO BE CHECKED: If we call this method for kPyBeautyJets, we need it here | |
1317 | // | |
1318 | if (fProcess == kPyJets || fProcess == kPyBeautyJets) { | |
8d2cd130 | 1319 | Int_t njets = 0; |
1320 | Int_t ntrig = 0; | |
1321 | Float_t jets[4][10]; | |
1322 | // | |
1323 | // Use Pythia clustering on parton level to determine jet axis | |
1324 | // | |
1325 | GetJets(njets, ntrig, jets); | |
1326 | ||
76d6ba9a | 1327 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; |
8d2cd130 | 1328 | // |
1329 | } else { | |
1330 | Int_t ij = 0; | |
1331 | Int_t ig = 1; | |
1332 | if (pdg[0] == kGamma) { | |
1333 | ij = 1; | |
1334 | ig = 0; | |
1335 | } | |
1336 | //Check eta range first... | |
1337 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1338 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1339 | { | |
1340 | //Eta is okay, now check phi range | |
1341 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1342 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1343 | { | |
1344 | triggered = kTRUE; | |
1345 | } | |
1346 | } | |
1347 | } | |
1348 | return triggered; | |
1349 | } | |
aea21c57 | 1350 | |
1351 | ||
aea21c57 | 1352 | |
7184e472 | 1353 | Bool_t AliGenPythia::CheckKinematicsOnChild(){ |
1354 | // | |
1355 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1356 | // | |
aea21c57 | 1357 | Bool_t checking = kFALSE; |
1358 | Int_t j, kcode, ks, km; | |
1359 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1360 | Int_t numberOfAcceptedParticles = 1; | |
1361 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
8507138f | 1362 | Int_t npart = fParticles.GetEntriesFast(); |
aea21c57 | 1363 | |
0f6ee828 | 1364 | for (j = 0; j<npart; j++) { |
8507138f | 1365 | TParticle * jparticle = (TParticle *) fParticles.At(j); |
aea21c57 | 1366 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
1367 | ks = jparticle->GetStatusCode(); | |
1368 | km = jparticle->GetFirstMother(); | |
1369 | ||
1370 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1371 | nPartAcc++; | |
1372 | } | |
0f6ee828 | 1373 | if( numberOfAcceptedParticles <= nPartAcc){ |
1374 | checking = kTRUE; | |
1375 | break; | |
1376 | } | |
aea21c57 | 1377 | } |
0f6ee828 | 1378 | |
aea21c57 | 1379 | return checking; |
aea21c57 | 1380 | } |
1381 | ||
5fa4b20b | 1382 | void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr) |
8d2cd130 | 1383 | { |
1058d9df | 1384 | // |
1385 | // Load event into Pythia Common Block | |
1386 | // | |
1387 | ||
1388 | Int_t npart = stack -> GetNprimary(); | |
1389 | Int_t n0 = 0; | |
1390 | ||
1391 | if (!flag) { | |
1392 | (fPythia->GetPyjets())->N = npart; | |
1393 | } else { | |
1394 | n0 = (fPythia->GetPyjets())->N; | |
1395 | (fPythia->GetPyjets())->N = n0 + npart; | |
1396 | } | |
1397 | ||
1398 | ||
1399 | for (Int_t part = 0; part < npart; part++) { | |
1400 | TParticle *mPart = stack->Particle(part); | |
32d6ef7d | 1401 | |
1058d9df | 1402 | Int_t kf = mPart->GetPdgCode(); |
1403 | Int_t ks = mPart->GetStatusCode(); | |
1404 | Int_t idf = mPart->GetFirstDaughter(); | |
1405 | Int_t idl = mPart->GetLastDaughter(); | |
1406 | ||
1407 | if (reHadr) { | |
1408 | if (ks == 11 || ks == 12) { | |
1409 | ks -= 10; | |
1410 | idf = -1; | |
1411 | idl = -1; | |
1412 | } | |
32d6ef7d | 1413 | } |
1414 | ||
1058d9df | 1415 | Float_t px = mPart->Px(); |
1416 | Float_t py = mPart->Py(); | |
1417 | Float_t pz = mPart->Pz(); | |
1418 | Float_t e = mPart->Energy(); | |
1419 | Float_t m = mPart->GetCalcMass(); | |
32d6ef7d | 1420 | |
1058d9df | 1421 | |
1422 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1423 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1424 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1425 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1426 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1427 | ||
1428 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1429 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1430 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1431 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1432 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | void AliGenPythia::LoadEvent(TObjArray* stack, Int_t flag, Int_t reHadr) | |
1437 | { | |
1438 | // | |
1439 | // Load event into Pythia Common Block | |
1440 | // | |
1441 | ||
1442 | Int_t npart = stack -> GetEntries(); | |
1443 | Int_t n0 = 0; | |
1444 | ||
1445 | if (!flag) { | |
1446 | (fPythia->GetPyjets())->N = npart; | |
1447 | } else { | |
1448 | n0 = (fPythia->GetPyjets())->N; | |
1449 | (fPythia->GetPyjets())->N = n0 + npart; | |
1450 | } | |
1451 | ||
1452 | ||
1453 | for (Int_t part = 0; part < npart; part++) { | |
1454 | TParticle *mPart = dynamic_cast<TParticle *>(stack->At(part)); | |
1455 | Int_t kf = mPart->GetPdgCode(); | |
1456 | Int_t ks = mPart->GetStatusCode(); | |
1457 | Int_t idf = mPart->GetFirstDaughter(); | |
1458 | Int_t idl = mPart->GetLastDaughter(); | |
1459 | ||
1460 | if (reHadr) { | |
5fa4b20b | 1461 | if (ks == 11 || ks == 12) { |
1058d9df | 1462 | ks -= 10; |
1463 | idf = -1; | |
1464 | idl = -1; | |
5fa4b20b | 1465 | } |
8d2cd130 | 1466 | } |
1058d9df | 1467 | |
1468 | Float_t px = mPart->Px(); | |
1469 | Float_t py = mPart->Py(); | |
1470 | Float_t pz = mPart->Pz(); | |
1471 | Float_t e = mPart->Energy(); | |
1472 | Float_t m = mPart->GetCalcMass(); | |
1473 | ||
1474 | ||
1475 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1476 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1477 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1478 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1479 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1480 | ||
1481 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1482 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1483 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1484 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1485 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1486 | } | |
8d2cd130 | 1487 | } |
1488 | ||
5fa4b20b | 1489 | |
014a9521 | 1490 | void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) |
8d2cd130 | 1491 | { |
1492 | // | |
1493 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1494 | // | |
1495 | // | |
8d2cd130 | 1496 | // |
1497 | // Save jets | |
1498 | Int_t n = fPythia->GetN(); | |
1499 | ||
1500 | // | |
1501 | // Run Jet Finder | |
1502 | fPythia->Pycell(njets); | |
1503 | Int_t i; | |
1504 | for (i = 0; i < njets; i++) { | |
1505 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1506 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1507 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1508 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1509 | ||
1510 | jets[0][i] = px; | |
1511 | jets[1][i] = py; | |
1512 | jets[2][i] = pz; | |
1513 | jets[3][i] = e; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | ||
1518 | ||
1519 | void AliGenPythia::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1520 | { | |
1521 | // | |
1522 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1523 | // | |
1524 | Int_t n = fPythia->GetN(); | |
1525 | nJets = 0; | |
1526 | nJetsTrig = 0; | |
1527 | if (fJetReconstruction == kCluster) { | |
1528 | // | |
1529 | // Configure cluster algorithm | |
1530 | // | |
1531 | fPythia->SetPARU(43, 2.); | |
1532 | fPythia->SetMSTU(41, 1); | |
1533 | // | |
1534 | // Call cluster algorithm | |
1535 | // | |
1536 | fPythia->Pyclus(nJets); | |
1537 | // | |
1538 | // Loading jets from common block | |
1539 | // | |
1540 | } else { | |
592f8307 | 1541 | |
8d2cd130 | 1542 | // |
1543 | // Run Jet Finder | |
1544 | fPythia->Pycell(nJets); | |
1545 | } | |
1546 | ||
1547 | Int_t i; | |
1548 | for (i = 0; i < nJets; i++) { | |
1549 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1550 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1551 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1552 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1553 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
a920faf9 | 1554 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); |
8d2cd130 | 1555 | Float_t theta = TMath::ATan2(pt,pz); |
1556 | Float_t et = e * TMath::Sin(theta); | |
1557 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
8d2cd130 | 1558 | if ( |
1559 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
675eb105 | 1560 | phi > fPhiMinJet && phi < fPhiMaxJet && |
8d2cd130 | 1561 | et > fEtMinJet && et < fEtMaxJet |
1562 | ) | |
1563 | { | |
1564 | jets[0][nJetsTrig] = px; | |
1565 | jets[1][nJetsTrig] = py; | |
1566 | jets[2][nJetsTrig] = pz; | |
1567 | jets[3][nJetsTrig] = e; | |
1568 | nJetsTrig++; | |
5fa4b20b | 1569 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
8d2cd130 | 1570 | } else { |
1571 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); | |
1572 | } | |
1573 | } | |
1574 | } | |
1575 | ||
f913ec4f | 1576 | void AliGenPythia::GetSubEventTime() |
1577 | { | |
1578 | // Calculates time of the next subevent | |
9d7108a7 | 1579 | fEventTime = 0.; |
1580 | if (fEventsTime) { | |
1581 | TArrayF &array = *fEventsTime; | |
1582 | fEventTime = array[fCurSubEvent++]; | |
1583 | } | |
1584 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1585 | return; | |
f913ec4f | 1586 | } |
8d2cd130 | 1587 | |
ec2c406e | 1588 | Bool_t AliGenPythia::IsInEMCAL(Float_t phi, Float_t eta) |
1589 | { | |
1590 | // Is particle in EMCAL acceptance? | |
ec2c406e | 1591 | // phi in degrees, etamin=-etamax |
9fd8e520 | 1592 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && |
1593 | eta < fEMCALEta ) | |
ec2c406e | 1594 | return kTRUE; |
1595 | else | |
1596 | return kFALSE; | |
1597 | } | |
1598 | ||
1599 | Bool_t AliGenPythia::IsInPHOS(Float_t phi, Float_t eta) | |
1600 | { | |
1601 | // Is particle in PHOS acceptance? | |
1602 | // Acceptance slightly larger considered. | |
1603 | // phi in degrees, etamin=-etamax | |
9fd8e520 | 1604 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && |
1605 | eta < fPHOSEta ) | |
ec2c406e | 1606 | return kTRUE; |
1607 | else | |
1608 | return kFALSE; | |
1609 | } | |
1610 | ||
90a236ce | 1611 | void AliGenPythia::RotatePhi(Int_t iphcand, Bool_t& okdd) |
1612 | { | |
1613 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1614 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1615 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1616 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1617 | ||
1618 | //calculate deltaphi | |
8507138f | 1619 | TParticle* ph = (TParticle *) fParticles.At(iphcand); |
90a236ce | 1620 | Double_t phphi = ph->Phi(); |
1621 | Double_t deltaphi = phiPHOS - phphi; | |
1622 | ||
1623 | ||
1624 | ||
1625 | //loop for all particles and produce the phi rotation | |
8507138f | 1626 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
90a236ce | 1627 | Double_t oldphi, newphi; |
1628 | Double_t newVx, newVy, R, Vz, time; | |
1629 | Double_t newPx, newPy, pt, Pz, e; | |
1630 | for(Int_t i=0; i< np; i++) { | |
8507138f | 1631 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1632 | oldphi = iparticle->Phi(); |
1633 | newphi = oldphi + deltaphi; | |
1634 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1635 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1636 | ||
1637 | R = iparticle->R(); | |
1638 | newVx = R*TMath::Cos(newphi); | |
1639 | newVy = R*TMath::Sin(newphi); | |
1640 | Vz = iparticle->Vz(); // don't transform | |
1641 | time = iparticle->T(); // don't transform | |
1642 | ||
1643 | pt = iparticle->Pt(); | |
1644 | newPx = pt*TMath::Cos(newphi); | |
1645 | newPy = pt*TMath::Sin(newphi); | |
1646 | Pz = iparticle->Pz(); // don't transform | |
1647 | e = iparticle->Energy(); // don't transform | |
1648 | ||
1649 | // apply rotation | |
1650 | iparticle->SetProductionVertex(newVx, newVy, Vz, time); | |
1651 | iparticle->SetMomentum(newPx, newPy, Pz, e); | |
1652 | ||
1653 | } //end particle loop | |
1654 | ||
1655 | // now let's check that we put correctly the candidate photon in PHOS | |
1656 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1657 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1658 | if(IsInPHOS(phi,eta)) | |
1659 | okdd = kTRUE; | |
1660 | } | |
ec2c406e | 1661 | |
1662 | ||
8d2cd130 | 1663 | #ifdef never |
1664 | void AliGenPythia::Streamer(TBuffer &R__b) | |
1665 | { | |
1666 | // Stream an object of class AliGenPythia. | |
1667 | ||
1668 | if (R__b.IsReading()) { | |
1669 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1670 | AliGenerator::Streamer(R__b); | |
1671 | R__b >> (Int_t&)fProcess; | |
1672 | R__b >> (Int_t&)fStrucFunc; | |
1673 | R__b >> (Int_t&)fForceDecay; | |
1674 | R__b >> fEnergyCMS; | |
1675 | R__b >> fKineBias; | |
1676 | R__b >> fTrials; | |
1677 | fParentSelect.Streamer(R__b); | |
1678 | fChildSelect.Streamer(R__b); | |
1679 | R__b >> fXsection; | |
1680 | // (AliPythia::Instance())->Streamer(R__b); | |
1681 | R__b >> fPtHardMin; | |
1682 | R__b >> fPtHardMax; | |
1683 | // if (fDecayer) fDecayer->Streamer(R__b); | |
1684 | } else { | |
1685 | R__b.WriteVersion(AliGenPythia::IsA()); | |
1686 | AliGenerator::Streamer(R__b); | |
1687 | R__b << (Int_t)fProcess; | |
1688 | R__b << (Int_t)fStrucFunc; | |
1689 | R__b << (Int_t)fForceDecay; | |
1690 | R__b << fEnergyCMS; | |
1691 | R__b << fKineBias; | |
1692 | R__b << fTrials; | |
1693 | fParentSelect.Streamer(R__b); | |
1694 | fChildSelect.Streamer(R__b); | |
1695 | R__b << fXsection; | |
1696 | // R__b << fPythia; | |
1697 | R__b << fPtHardMin; | |
1698 | R__b << fPtHardMax; | |
1699 | // fDecayer->Streamer(R__b); | |
1700 | } | |
1701 | } | |
1702 | #endif | |
1703 | ||
90d7b703 | 1704 | |
589380c6 | 1705 |