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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.), | |
e6fe9b82 | 83 | fImpact(0.), |
e8a8adcd | 84 | fPtKick(1.), |
85 | fFullEvent(kTRUE), | |
86 | fDecayer(new AliDecayerPythia()), | |
87 | fDebugEventFirst(-1), | |
88 | fDebugEventLast(-1), | |
89 | fEtMinJet(0.), | |
90 | fEtMaxJet(1.e4), | |
91 | fEtaMinJet(-20.), | |
92 | fEtaMaxJet(20.), | |
93 | fPhiMinJet(0.), | |
94 | fPhiMaxJet(2.* TMath::Pi()), | |
95 | fJetReconstruction(kCell), | |
96 | fEtaMinGamma(-20.), | |
97 | fEtaMaxGamma(20.), | |
98 | fPhiMinGamma(0.), | |
99 | fPhiMaxGamma(2. * TMath::Pi()), | |
100 | fPycellEtaMax(2.), | |
101 | fPycellNEta(274), | |
102 | fPycellNPhi(432), | |
103 | fPycellThreshold(0.), | |
104 | fPycellEtSeed(4.), | |
105 | fPycellMinEtJet(10.), | |
106 | fPycellMaxRadius(1.), | |
107 | fStackFillOpt(kFlavorSelection), | |
108 | fFeedDownOpt(kTRUE), | |
109 | fFragmentation(kTRUE), | |
110 | fSetNuclei(kFALSE), | |
111 | fNewMIS(kFALSE), | |
112 | fHFoff(kFALSE), | |
20e47f08 | 113 | fNucPdf(0), |
e8a8adcd | 114 | fTriggerParticle(0), |
115 | fTriggerEta(0.9), | |
700b9416 | 116 | fTriggerMultiplicity(0), |
117 | fTriggerMultiplicityEta(0), | |
e8a8adcd | 118 | fCountMode(kCountAll), |
119 | fHeader(0), | |
120 | fRL(0), | |
ec2c406e | 121 | fFileName(0), |
9fd8e520 | 122 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 123 | fPi0InCalo(kFALSE) , |
90a236ce | 124 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 125 | fEleInEMCAL(kFALSE), |
9fd8e520 | 126 | fCheckEMCAL(kFALSE), |
127 | fCheckPHOS(kFALSE), | |
90a236ce | 128 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 129 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 130 | fPhotonMinPt(0), |
9dfe63b3 | 131 | fElectronMinPt(0), |
9fd8e520 | 132 | fPHOSMinPhi(219.), |
133 | fPHOSMaxPhi(321.), | |
134 | fPHOSEta(0.13), | |
135 | fEMCALMinPhi(79.), | |
136 | fEMCALMaxPhi(191.), | |
137 | fEMCALEta(0.71) | |
ec2c406e | 138 | |
8d2cd130 | 139 | { |
140 | // Default Constructor | |
e7c989e4 | 141 | fEnergyCMS = 5500.; |
2d9f9817 | 142 | SetNuclei(0,0); |
7cdba479 | 143 | if (!AliPythiaRndm::GetPythiaRandom()) |
e8a8adcd | 144 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 | 145 | } |
146 | ||
147 | AliGenPythia::AliGenPythia(Int_t npart) | |
e8a8adcd | 148 | :AliGenMC(npart), |
149 | fProcess(kPyCharm), | |
150 | fStrucFunc(kCTEQ5L), | |
e8a8adcd | 151 | fKineBias(0.), |
152 | fTrials(0), | |
153 | fTrialsRun(0), | |
154 | fQ(0.), | |
155 | fX1(0.), | |
156 | fX2(0.), | |
157 | fEventTime(0.), | |
158 | fInteractionRate(0.), | |
159 | fTimeWindow(0.), | |
160 | fCurSubEvent(0), | |
161 | fEventsTime(0), | |
162 | fNev(0), | |
163 | fFlavorSelect(0), | |
164 | fXsection(0.), | |
165 | fPythia(0), | |
166 | fPtHardMin(0.), | |
167 | fPtHardMax(1.e4), | |
168 | fYHardMin(-1.e10), | |
169 | fYHardMax(1.e10), | |
170 | fGinit(kTRUE), | |
171 | fGfinal(kTRUE), | |
172 | fHadronisation(kTRUE), | |
173 | fNpartons(0), | |
174 | fReadFromFile(kFALSE), | |
175 | fQuench(kFALSE), | |
cd07c39b | 176 | fQhat(0.), |
177 | fLength(0.), | |
e6fe9b82 | 178 | fImpact(0.), |
e8a8adcd | 179 | fPtKick(1.), |
180 | fFullEvent(kTRUE), | |
181 | fDecayer(new AliDecayerPythia()), | |
182 | fDebugEventFirst(-1), | |
183 | fDebugEventLast(-1), | |
184 | fEtMinJet(0.), | |
185 | fEtMaxJet(1.e4), | |
186 | fEtaMinJet(-20.), | |
187 | fEtaMaxJet(20.), | |
188 | fPhiMinJet(0.), | |
189 | fPhiMaxJet(2.* TMath::Pi()), | |
190 | fJetReconstruction(kCell), | |
191 | fEtaMinGamma(-20.), | |
192 | fEtaMaxGamma(20.), | |
193 | fPhiMinGamma(0.), | |
194 | fPhiMaxGamma(2. * TMath::Pi()), | |
195 | fPycellEtaMax(2.), | |
196 | fPycellNEta(274), | |
197 | fPycellNPhi(432), | |
198 | fPycellThreshold(0.), | |
199 | fPycellEtSeed(4.), | |
200 | fPycellMinEtJet(10.), | |
201 | fPycellMaxRadius(1.), | |
202 | fStackFillOpt(kFlavorSelection), | |
203 | fFeedDownOpt(kTRUE), | |
204 | fFragmentation(kTRUE), | |
205 | fSetNuclei(kFALSE), | |
206 | fNewMIS(kFALSE), | |
207 | fHFoff(kFALSE), | |
20e47f08 | 208 | fNucPdf(0), |
e8a8adcd | 209 | fTriggerParticle(0), |
210 | fTriggerEta(0.9), | |
700b9416 | 211 | fTriggerMultiplicity(0), |
212 | fTriggerMultiplicityEta(0), | |
e8a8adcd | 213 | fCountMode(kCountAll), |
214 | fHeader(0), | |
215 | fRL(0), | |
ec2c406e | 216 | fFileName(0), |
9fd8e520 | 217 | fFragPhotonInCalo(kFALSE), |
ec2c406e | 218 | fPi0InCalo(kFALSE) , |
90a236ce | 219 | fPhotonInCalo(kFALSE), |
9dfe63b3 | 220 | fEleInEMCAL(kFALSE), |
9fd8e520 | 221 | fCheckEMCAL(kFALSE), |
222 | fCheckPHOS(kFALSE), | |
90a236ce | 223 | fCheckPHOSeta(kFALSE), |
9fd8e520 | 224 | fFragPhotonOrPi0MinPt(0), |
90a236ce | 225 | fPhotonMinPt(0), |
9dfe63b3 | 226 | fElectronMinPt(0), |
9fd8e520 | 227 | fPHOSMinPhi(219.), |
228 | fPHOSMaxPhi(321.), | |
229 | fPHOSEta(0.13), | |
230 | fEMCALMinPhi(79.), | |
231 | fEMCALMaxPhi(191.), | |
232 | fEMCALEta(0.71) | |
8d2cd130 | 233 | { |
234 | // default charm production at 5. 5 TeV | |
235 | // semimuonic decay | |
236 | // structure function GRVHO | |
237 | // | |
e7c989e4 | 238 | fEnergyCMS = 5500.; |
8d2cd130 | 239 | fName = "Pythia"; |
240 | fTitle= "Particle Generator using PYTHIA"; | |
8d2cd130 | 241 | SetForceDecay(); |
8d2cd130 | 242 | // Set random number generator |
7cdba479 | 243 | if (!AliPythiaRndm::GetPythiaRandom()) |
244 | AliPythiaRndm::SetPythiaRandom(GetRandom()); | |
2d9f9817 | 245 | SetNuclei(0,0); |
76d6ba9a | 246 | } |
8d2cd130 | 247 | |
8d2cd130 | 248 | AliGenPythia::~AliGenPythia() |
249 | { | |
250 | // Destructor | |
9d7108a7 | 251 | if(fEventsTime) delete fEventsTime; |
252 | } | |
253 | ||
254 | void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow) | |
255 | { | |
256 | // Generate pileup using user specified rate | |
257 | fInteractionRate = rate; | |
258 | fTimeWindow = timewindow; | |
259 | GeneratePileup(); | |
260 | } | |
261 | ||
262 | void AliGenPythia::GeneratePileup() | |
263 | { | |
264 | // Generate sub events time for pileup | |
265 | fEventsTime = 0; | |
266 | if(fInteractionRate == 0.) { | |
267 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); | |
268 | return; | |
269 | } | |
270 | ||
271 | Int_t npart = NumberParticles(); | |
272 | if(npart < 0) { | |
273 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); | |
274 | return; | |
275 | } | |
276 | ||
277 | if(fEventsTime) delete fEventsTime; | |
278 | fEventsTime = new TArrayF(npart); | |
279 | TArrayF &array = *fEventsTime; | |
280 | for(Int_t ipart = 0; ipart < npart; ipart++) | |
281 | array[ipart] = 0.; | |
282 | ||
283 | Float_t eventtime = 0.; | |
284 | while(1) | |
285 | { | |
286 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
287 | if(eventtime > fTimeWindow) break; | |
288 | array.Set(array.GetSize()+1); | |
289 | array[array.GetSize()-1] = eventtime; | |
290 | } | |
291 | ||
292 | eventtime = 0.; | |
293 | while(1) | |
294 | { | |
295 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); | |
296 | if(TMath::Abs(eventtime) > fTimeWindow) break; | |
297 | array.Set(array.GetSize()+1); | |
298 | array[array.GetSize()-1] = eventtime; | |
299 | } | |
300 | ||
301 | SetNumberParticles(fEventsTime->GetSize()); | |
8d2cd130 | 302 | } |
303 | ||
592f8307 | 304 | void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, |
305 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) | |
306 | { | |
307 | // Set pycell parameters | |
308 | fPycellEtaMax = etamax; | |
309 | fPycellNEta = neta; | |
310 | fPycellNPhi = nphi; | |
311 | fPycellThreshold = thresh; | |
312 | fPycellEtSeed = etseed; | |
313 | fPycellMinEtJet = minet; | |
314 | fPycellMaxRadius = r; | |
315 | } | |
316 | ||
317 | ||
318 | ||
8d2cd130 | 319 | void AliGenPythia::SetEventListRange(Int_t eventFirst, Int_t eventLast) |
320 | { | |
321 | // Set a range of event numbers, for which a table | |
322 | // of generated particle will be printed | |
323 | fDebugEventFirst = eventFirst; | |
324 | fDebugEventLast = eventLast; | |
325 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; | |
326 | } | |
327 | ||
328 | void AliGenPythia::Init() | |
329 | { | |
330 | // Initialisation | |
331 | ||
332 | SetMC(AliPythia::Instance()); | |
b88f5cea | 333 | fPythia=(AliPythia*) fMCEvGen; |
e2bddf81 | 334 | |
8d2cd130 | 335 | // |
336 | fParentWeight=1./Float_t(fNpart); | |
337 | // | |
8d2cd130 | 338 | |
339 | ||
340 | fPythia->SetCKIN(3,fPtHardMin); | |
341 | fPythia->SetCKIN(4,fPtHardMax); | |
342 | fPythia->SetCKIN(7,fYHardMin); | |
343 | fPythia->SetCKIN(8,fYHardMax); | |
344 | ||
20e47f08 | 345 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget, fNucPdf); |
8d2cd130 | 346 | // Fragmentation? |
347 | if (fFragmentation) { | |
348 | fPythia->SetMSTP(111,1); | |
349 | } else { | |
350 | fPythia->SetMSTP(111,0); | |
351 | } | |
352 | ||
353 | ||
354 | // initial state radiation | |
355 | fPythia->SetMSTP(61,fGinit); | |
356 | // final state radiation | |
357 | fPythia->SetMSTP(71,fGfinal); | |
358 | // pt - kick | |
359 | if (fPtKick > 0.) { | |
360 | fPythia->SetMSTP(91,1); | |
688950ef | 361 | fPythia->SetPARP(91,fPtKick); |
362 | fPythia->SetPARP(93, 4. * fPtKick); | |
8d2cd130 | 363 | } else { |
364 | fPythia->SetMSTP(91,0); | |
365 | } | |
366 | ||
5fa4b20b | 367 | |
368 | if (fReadFromFile) { | |
369 | fRL = AliRunLoader::Open(fFileName, "Partons"); | |
370 | fRL->LoadKinematics(); | |
371 | fRL->LoadHeader(); | |
372 | } else { | |
373 | fRL = 0x0; | |
374 | } | |
fdea4387 | 375 | // |
376 | fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc); | |
377 | // Forward Paramters to the AliPythia object | |
378 | fDecayer->SetForceDecay(fForceDecay); | |
beac474c | 379 | // Switch off Heavy Flavors on request |
380 | if (fHFoff) { | |
51387949 | 381 | // Maximum number of quark flavours used in pdf |
beac474c | 382 | fPythia->SetMSTP(58, 3); |
51387949 | 383 | // Maximum number of flavors that can be used in showers |
beac474c | 384 | fPythia->SetMSTJ(45, 3); |
51387949 | 385 | // Switch off g->QQbar splitting in decay table |
386 | ((AliDecayerPythia*) fDecayer)->HeavyFlavourOff(); | |
beac474c | 387 | } |
fdea4387 | 388 | |
51387949 | 389 | fDecayer->Init(); |
390 | ||
8d2cd130 | 391 | |
392 | // Parent and Children Selection | |
393 | switch (fProcess) | |
394 | { | |
65f2626c | 395 | case kPyOldUEQ2ordered: |
396 | case kPyOldUEQ2ordered2: | |
397 | case kPyOldPopcorn: | |
398 | break; | |
8d2cd130 | 399 | case kPyCharm: |
400 | case kPyCharmUnforced: | |
adf4d898 | 401 | case kPyCharmPbPbMNR: |
aabc7187 | 402 | case kPyCharmpPbMNR: |
e0e89f40 | 403 | case kPyCharmppMNR: |
404 | case kPyCharmppMNRwmi: | |
8d2cd130 | 405 | fParentSelect[0] = 411; |
406 | fParentSelect[1] = 421; | |
407 | fParentSelect[2] = 431; | |
408 | fParentSelect[3] = 4122; | |
9ccc3d0e | 409 | fParentSelect[4] = 4232; |
410 | fParentSelect[5] = 4132; | |
411 | fParentSelect[6] = 4332; | |
8d2cd130 | 412 | fFlavorSelect = 4; |
413 | break; | |
adf4d898 | 414 | case kPyD0PbPbMNR: |
415 | case kPyD0pPbMNR: | |
416 | case kPyD0ppMNR: | |
8d2cd130 | 417 | fParentSelect[0] = 421; |
418 | fFlavorSelect = 4; | |
419 | break; | |
90d7b703 | 420 | case kPyDPlusPbPbMNR: |
421 | case kPyDPluspPbMNR: | |
422 | case kPyDPlusppMNR: | |
423 | fParentSelect[0] = 411; | |
424 | fFlavorSelect = 4; | |
425 | break; | |
e0e89f40 | 426 | case kPyDPlusStrangePbPbMNR: |
427 | case kPyDPlusStrangepPbMNR: | |
428 | case kPyDPlusStrangeppMNR: | |
429 | fParentSelect[0] = 431; | |
430 | fFlavorSelect = 4; | |
431 | break; | |
8d2cd130 | 432 | case kPyBeauty: |
9dfe63b3 | 433 | case kPyBeautyJets: |
adf4d898 | 434 | case kPyBeautyPbPbMNR: |
435 | case kPyBeautypPbMNR: | |
436 | case kPyBeautyppMNR: | |
e0e89f40 | 437 | case kPyBeautyppMNRwmi: |
8d2cd130 | 438 | fParentSelect[0]= 511; |
439 | fParentSelect[1]= 521; | |
440 | fParentSelect[2]= 531; | |
441 | fParentSelect[3]= 5122; | |
442 | fParentSelect[4]= 5132; | |
443 | fParentSelect[5]= 5232; | |
444 | fParentSelect[6]= 5332; | |
445 | fFlavorSelect = 5; | |
446 | break; | |
447 | case kPyBeautyUnforced: | |
448 | fParentSelect[0] = 511; | |
449 | fParentSelect[1] = 521; | |
450 | fParentSelect[2] = 531; | |
451 | fParentSelect[3] = 5122; | |
452 | fParentSelect[4] = 5132; | |
453 | fParentSelect[5] = 5232; | |
454 | fParentSelect[6] = 5332; | |
455 | fFlavorSelect = 5; | |
456 | break; | |
457 | case kPyJpsiChi: | |
458 | case kPyJpsi: | |
459 | fParentSelect[0] = 443; | |
460 | break; | |
f529e69b | 461 | case kPyMbDefault: |
8d2cd130 | 462 | case kPyMb: |
04081a91 | 463 | case kPyMbWithDirectPhoton: |
8d2cd130 | 464 | case kPyMbNonDiffr: |
d7de4a67 | 465 | case kPyMbMSEL1: |
8d2cd130 | 466 | case kPyJets: |
467 | case kPyDirectGamma: | |
e33acb67 | 468 | case kPyLhwgMb: |
8d2cd130 | 469 | break; |
589380c6 | 470 | case kPyW: |
0f6ee828 | 471 | case kPyZ: |
589380c6 | 472 | break; |
8d2cd130 | 473 | } |
474 | // | |
592f8307 | 475 | // |
476 | // JetFinder for Trigger | |
477 | // | |
478 | // Configure detector (EMCAL like) | |
479 | // | |
d7de4a67 | 480 | fPythia->SetPARU(51, fPycellEtaMax); |
481 | fPythia->SetMSTU(51, fPycellNEta); | |
482 | fPythia->SetMSTU(52, fPycellNPhi); | |
592f8307 | 483 | // |
484 | // Configure Jet Finder | |
485 | // | |
d7de4a67 | 486 | fPythia->SetPARU(58, fPycellThreshold); |
487 | fPythia->SetPARU(52, fPycellEtSeed); | |
488 | fPythia->SetPARU(53, fPycellMinEtJet); | |
489 | fPythia->SetPARU(54, fPycellMaxRadius); | |
490 | fPythia->SetMSTU(54, 2); | |
592f8307 | 491 | // |
8d2cd130 | 492 | // This counts the total number of calls to Pyevnt() per run. |
493 | fTrialsRun = 0; | |
494 | fQ = 0.; | |
495 | fX1 = 0.; | |
496 | fX2 = 0.; | |
497 | fNev = 0 ; | |
498 | // | |
1d568bc2 | 499 | // |
500 | // | |
8d2cd130 | 501 | AliGenMC::Init(); |
1d568bc2 | 502 | // |
503 | // | |
504 | // | |
505 | if (fSetNuclei) { | |
506 | fDyBoost = 0; | |
507 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); | |
508 | } | |
d7de4a67 | 509 | |
cd07c39b | 510 | fPythia->SetPARJ(200, 0.0); |
511 | fPythia->SetPARJ(199, 0.0); | |
512 | fPythia->SetPARJ(198, 0.0); | |
513 | fPythia->SetPARJ(197, 0.0); | |
514 | ||
515 | if (fQuench == 1) { | |
5fa4b20b | 516 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0); |
32d6ef7d | 517 | } |
3a709cfa | 518 | |
b976f7d8 | 519 | if (fQuench == 3) { |
520 | // Nestor's change of the splittings | |
521 | fPythia->SetPARJ(200, 0.8); | |
522 | fPythia->SetMSTJ(41, 1); // QCD radiation only | |
523 | fPythia->SetMSTJ(42, 2); // angular ordering | |
524 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
525 | fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element | |
526 | fPythia->SetMSTJ(50, 0); // No coherence in first branching | |
527 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers | |
cd07c39b | 528 | } else if (fQuench == 4) { |
529 | // Armesto-Cunqueiro-Salgado change of the splittings. | |
530 | AliFastGlauber* glauber = AliFastGlauber::Instance(); | |
531 | glauber->Init(2); | |
532 | //read and store transverse almonds corresponding to differnt | |
533 | //impact parameters. | |
cd07c39b | 534 | glauber->SetCentralityClass(0.,0.1); |
535 | fPythia->SetPARJ(200, 1.); | |
536 | fPythia->SetPARJ(198, fQhat); | |
537 | fPythia->SetPARJ(199, fLength); | |
cd07c39b | 538 | fPythia->SetMSTJ(42, 2); // angular ordering |
539 | fPythia->SetMSTJ(44, 2); // option to run alpha_s | |
cd07c39b | 540 | fPythia->SetPARJ(82, 1.); // Cut off for parton showers |
b976f7d8 | 541 | } |
8d2cd130 | 542 | } |
543 | ||
544 | void AliGenPythia::Generate() | |
545 | { | |
546 | // Generate one event | |
19ef8cf0 | 547 | if (!fPythia) fPythia=(AliPythia*) fMCEvGen; |
8d2cd130 | 548 | fDecayer->ForceDecay(); |
549 | ||
550 | Float_t polar[3] = {0,0,0}; | |
551 | Float_t origin[3] = {0,0,0}; | |
a920faf9 | 552 | Float_t p[4]; |
8d2cd130 | 553 | // converts from mm/c to s |
554 | const Float_t kconv=0.001/2.999792458e8; | |
555 | // | |
556 | Int_t nt=0; | |
557 | Int_t jev=0; | |
558 | Int_t j, kf; | |
559 | fTrials=0; | |
f913ec4f | 560 | fEventTime = 0.; |
561 | ||
2590ccf9 | 562 | |
8d2cd130 | 563 | |
564 | // Set collision vertex position | |
2590ccf9 | 565 | if (fVertexSmear == kPerEvent) Vertex(); |
566 | ||
8d2cd130 | 567 | // event loop |
568 | while(1) | |
569 | { | |
32d6ef7d | 570 | // |
5fa4b20b | 571 | // Produce event |
32d6ef7d | 572 | // |
32d6ef7d | 573 | // |
5fa4b20b | 574 | // Switch hadronisation off |
575 | // | |
576 | fPythia->SetMSTJ(1, 0); | |
cd07c39b | 577 | |
578 | if (fQuench ==4){ | |
579 | Double_t bimp; | |
580 | // Quenching comes through medium-modified splitting functions. | |
581 | AliFastGlauber::Instance()->GetRandomBHard(bimp); | |
e6fe9b82 | 582 | fPythia->SetPARJ(197, bimp); |
583 | fImpact = bimp; | |
cd07c39b | 584 | } |
32d6ef7d | 585 | // |
5fa4b20b | 586 | // Either produce new event or read partons from file |
587 | // | |
588 | if (!fReadFromFile) { | |
beac474c | 589 | if (!fNewMIS) { |
590 | fPythia->Pyevnt(); | |
591 | } else { | |
592 | fPythia->Pyevnw(); | |
593 | } | |
5fa4b20b | 594 | fNpartons = fPythia->GetN(); |
595 | } else { | |
33c3c91a | 596 | printf("Loading Event %d\n",AliRunLoader::Instance()->GetEventNumber()); |
597 | fRL->GetEvent(AliRunLoader::Instance()->GetEventNumber()); | |
5fa4b20b | 598 | fPythia->SetN(0); |
599 | LoadEvent(fRL->Stack(), 0 , 1); | |
600 | fPythia->Pyedit(21); | |
601 | } | |
602 | ||
32d6ef7d | 603 | // |
604 | // Run quenching routine | |
605 | // | |
5fa4b20b | 606 | if (fQuench == 1) { |
607 | fPythia->Quench(); | |
608 | } else if (fQuench == 2){ | |
609 | fPythia->Pyquen(208., 0, 0.); | |
b976f7d8 | 610 | } else if (fQuench == 3) { |
611 | // Quenching is via multiplicative correction of the splittings | |
5fa4b20b | 612 | } |
b976f7d8 | 613 | |
32d6ef7d | 614 | // |
5fa4b20b | 615 | // Switch hadronisation on |
32d6ef7d | 616 | // |
20e47f08 | 617 | if (fHadronisation) { |
618 | fPythia->SetMSTJ(1, 1); | |
5fa4b20b | 619 | // |
620 | // .. and perform hadronisation | |
aea21c57 | 621 | // printf("Calling hadronisation %d\n", fPythia->GetN()); |
20e47f08 | 622 | fPythia->Pyexec(); |
623 | } | |
8d2cd130 | 624 | fTrials++; |
8507138f | 625 | fPythia->ImportParticles(&fParticles,"All"); |
1d568bc2 | 626 | Boost(); |
8d2cd130 | 627 | // |
628 | // | |
629 | // | |
630 | Int_t i; | |
631 | ||
dbd64db6 | 632 | fNprimaries = 0; |
8507138f | 633 | Int_t np = fParticles.GetEntriesFast(); |
5fa4b20b | 634 | |
7c21f297 | 635 | if (np == 0) continue; |
8d2cd130 | 636 | // |
2590ccf9 | 637 | |
8d2cd130 | 638 | // |
639 | Int_t* pParent = new Int_t[np]; | |
640 | Int_t* pSelected = new Int_t[np]; | |
641 | Int_t* trackIt = new Int_t[np]; | |
5fa4b20b | 642 | for (i = 0; i < np; i++) { |
8d2cd130 | 643 | pParent[i] = -1; |
644 | pSelected[i] = 0; | |
645 | trackIt[i] = 0; | |
646 | } | |
647 | ||
648 | Int_t nc = 0; // Total n. of selected particles | |
649 | Int_t nParents = 0; // Selected parents | |
650 | Int_t nTkbles = 0; // Trackable particles | |
f529e69b | 651 | if (fProcess != kPyMbDefault && |
652 | fProcess != kPyMb && | |
04081a91 | 653 | fProcess != kPyMbWithDirectPhoton && |
f529e69b | 654 | fProcess != kPyJets && |
8d2cd130 | 655 | fProcess != kPyDirectGamma && |
589380c6 | 656 | fProcess != kPyMbNonDiffr && |
d7de4a67 | 657 | fProcess != kPyMbMSEL1 && |
f529e69b | 658 | fProcess != kPyW && |
659 | fProcess != kPyZ && | |
660 | fProcess != kPyCharmppMNRwmi && | |
9dfe63b3 | 661 | fProcess != kPyBeautyppMNRwmi && |
662 | fProcess != kPyBeautyJets) { | |
8d2cd130 | 663 | |
5fa4b20b | 664 | for (i = 0; i < np; i++) { |
8507138f | 665 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 666 | Int_t ks = iparticle->GetStatusCode(); |
667 | kf = CheckPDGCode(iparticle->GetPdgCode()); | |
668 | // No initial state partons | |
669 | if (ks==21) continue; | |
670 | // | |
671 | // Heavy Flavor Selection | |
672 | // | |
673 | // quark ? | |
674 | kf = TMath::Abs(kf); | |
675 | Int_t kfl = kf; | |
9ff6c04c | 676 | // Resonance |
f913ec4f | 677 | |
9ff6c04c | 678 | if (kfl > 100000) kfl %= 100000; |
183a5ca9 | 679 | if (kfl > 10000) kfl %= 10000; |
8d2cd130 | 680 | // meson ? |
681 | if (kfl > 10) kfl/=100; | |
682 | // baryon | |
683 | if (kfl > 10) kfl/=10; | |
8d2cd130 | 684 | Int_t ipa = iparticle->GetFirstMother()-1; |
685 | Int_t kfMo = 0; | |
f913ec4f | 686 | // |
687 | // Establish mother daughter relation between heavy quarks and mesons | |
688 | // | |
689 | if (kf >= fFlavorSelect && kf <= 6) { | |
690 | Int_t idau = iparticle->GetFirstDaughter() - 1; | |
691 | if (idau > -1) { | |
8507138f | 692 | TParticle* daughter = (TParticle *) fParticles.At(idau); |
f913ec4f | 693 | Int_t pdgD = daughter->GetPdgCode(); |
694 | if (pdgD == 91 || pdgD == 92) { | |
695 | Int_t jmin = daughter->GetFirstDaughter() - 1; | |
696 | Int_t jmax = daughter->GetLastDaughter() - 1; | |
2ab330c9 | 697 | for (Int_t jp = jmin; jp <= jmax; jp++) |
698 | ((TParticle *) fParticles.At(jp))->SetFirstMother(i+1); | |
f913ec4f | 699 | } // is string or cluster |
700 | } // has daughter | |
701 | } // heavy quark | |
8d2cd130 | 702 | |
f913ec4f | 703 | |
8d2cd130 | 704 | if (ipa > -1) { |
8507138f | 705 | TParticle * mother = (TParticle *) fParticles.At(ipa); |
8d2cd130 | 706 | kfMo = TMath::Abs(mother->GetPdgCode()); |
707 | } | |
f913ec4f | 708 | |
8d2cd130 | 709 | // What to keep in Stack? |
710 | Bool_t flavorOK = kFALSE; | |
711 | Bool_t selectOK = kFALSE; | |
712 | if (fFeedDownOpt) { | |
32d6ef7d | 713 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 | 714 | } else { |
32d6ef7d | 715 | if (kfl > fFlavorSelect) { |
716 | nc = -1; | |
717 | break; | |
718 | } | |
719 | if (kfl == fFlavorSelect) flavorOK = kTRUE; | |
8d2cd130 | 720 | } |
721 | switch (fStackFillOpt) { | |
722 | case kFlavorSelection: | |
32d6ef7d | 723 | selectOK = kTRUE; |
724 | break; | |
8d2cd130 | 725 | case kParentSelection: |
32d6ef7d | 726 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; |
727 | break; | |
8d2cd130 | 728 | } |
729 | if (flavorOK && selectOK) { | |
730 | // | |
731 | // Heavy flavor hadron or quark | |
732 | // | |
733 | // Kinematic seletion on final state heavy flavor mesons | |
734 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) | |
735 | { | |
9ff6c04c | 736 | continue; |
8d2cd130 | 737 | } |
738 | pSelected[i] = 1; | |
739 | if (ParentSelected(kf)) ++nParents; // Update parent count | |
740 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); | |
741 | } else { | |
742 | // Kinematic seletion on decay products | |
743 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) | |
9ff6c04c | 744 | && !KinematicSelection(iparticle, 1)) |
8d2cd130 | 745 | { |
9ff6c04c | 746 | continue; |
8d2cd130 | 747 | } |
748 | // | |
749 | // Decay products | |
750 | // Select if mother was selected and is not tracked | |
751 | ||
752 | if (pSelected[ipa] && | |
753 | !trackIt[ipa] && // mother will be tracked ? | |
754 | kfMo != 5 && // mother is b-quark, don't store fragments | |
755 | kfMo != 4 && // mother is c-quark, don't store fragments | |
756 | kf != 92) // don't store string | |
757 | { | |
758 | // | |
759 | // Semi-stable or de-selected: diselect decay products: | |
760 | // | |
761 | // | |
762 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) | |
763 | { | |
764 | Int_t ipF = iparticle->GetFirstDaughter(); | |
765 | Int_t ipL = iparticle->GetLastDaughter(); | |
766 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; | |
767 | } | |
768 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); | |
769 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; | |
770 | } | |
771 | } | |
772 | if (pSelected[i] == -1) pSelected[i] = 0; | |
773 | if (!pSelected[i]) continue; | |
774 | // Count quarks only if you did not include fragmentation | |
775 | if (fFragmentation && kf <= 10) continue; | |
9ff6c04c | 776 | |
8d2cd130 | 777 | nc++; |
778 | // Decision on tracking | |
779 | trackIt[i] = 0; | |
780 | // | |
781 | // Track final state particle | |
782 | if (ks == 1) trackIt[i] = 1; | |
783 | // Track semi-stable particles | |
d25cfd65 | 784 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; |
8d2cd130 | 785 | // Track particles selected by process if undecayed. |
786 | if (fForceDecay == kNoDecay) { | |
787 | if (ParentSelected(kf)) trackIt[i] = 1; | |
788 | } else { | |
789 | if (ParentSelected(kf)) trackIt[i] = 0; | |
790 | } | |
791 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter | |
792 | // | |
793 | // | |
794 | ||
795 | } // particle selection loop | |
796 | if (nc > 0) { | |
797 | for (i = 0; i<np; i++) { | |
798 | if (!pSelected[i]) continue; | |
8507138f | 799 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 800 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
801 | Int_t ks = iparticle->GetStatusCode(); | |
802 | p[0] = iparticle->Px(); | |
803 | p[1] = iparticle->Py(); | |
804 | p[2] = iparticle->Pz(); | |
a920faf9 | 805 | p[3] = iparticle->Energy(); |
806 | ||
2590ccf9 | 807 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
808 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
809 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
810 | ||
8d2cd130 | 811 | Float_t tof = kconv*iparticle->T(); |
812 | Int_t ipa = iparticle->GetFirstMother()-1; | |
813 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; | |
a920faf9 | 814 | |
815 | PushTrack(fTrackIt*trackIt[i], iparent, kf, | |
816 | p[0], p[1], p[2], p[3], | |
817 | origin[0], origin[1], origin[2], tof, | |
818 | polar[0], polar[1], polar[2], | |
819 | kPPrimary, nt, 1., ks); | |
8d2cd130 | 820 | pParent[i] = nt; |
dbd64db6 | 821 | KeepTrack(nt); |
822 | fNprimaries++; | |
642f15cf | 823 | } // PushTrack loop |
8d2cd130 | 824 | } |
825 | } else { | |
826 | nc = GenerateMB(); | |
827 | } // mb ? | |
f913ec4f | 828 | |
829 | GetSubEventTime(); | |
8d2cd130 | 830 | |
234f6d32 | 831 | delete[] pParent; |
832 | delete[] pSelected; | |
833 | delete[] trackIt; | |
8d2cd130 | 834 | |
835 | if (nc > 0) { | |
836 | switch (fCountMode) { | |
837 | case kCountAll: | |
838 | // printf(" Count all \n"); | |
839 | jev += nc; | |
840 | break; | |
841 | case kCountParents: | |
842 | // printf(" Count parents \n"); | |
843 | jev += nParents; | |
844 | break; | |
845 | case kCountTrackables: | |
846 | // printf(" Count trackable \n"); | |
847 | jev += nTkbles; | |
848 | break; | |
849 | } | |
850 | if (jev >= fNpart || fNpart == -1) { | |
851 | fKineBias=Float_t(fNpart)/Float_t(fTrials); | |
e0e89f40 | 852 | |
8d2cd130 | 853 | fQ += fPythia->GetVINT(51); |
854 | fX1 += fPythia->GetVINT(41); | |
855 | fX2 += fPythia->GetVINT(42); | |
856 | fTrialsRun += fTrials; | |
857 | fNev++; | |
858 | MakeHeader(); | |
859 | break; | |
860 | } | |
861 | } | |
862 | } // event loop | |
863 | SetHighWaterMark(nt); | |
864 | // adjust weight due to kinematic selection | |
b88f5cea | 865 | // AdjustWeights(); |
8d2cd130 | 866 | // get cross-section |
867 | fXsection=fPythia->GetPARI(1); | |
868 | } | |
869 | ||
870 | Int_t AliGenPythia::GenerateMB() | |
871 | { | |
872 | // | |
873 | // Min Bias selection and other global selections | |
874 | // | |
875 | Int_t i, kf, nt, iparent; | |
876 | Int_t nc = 0; | |
bf950da8 | 877 | Float_t p[4]; |
8d2cd130 | 878 | Float_t polar[3] = {0,0,0}; |
879 | Float_t origin[3] = {0,0,0}; | |
880 | // converts from mm/c to s | |
881 | const Float_t kconv=0.001/2.999792458e8; | |
882 | ||
e0e89f40 | 883 | |
884 | ||
8507138f | 885 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
aea21c57 | 886 | |
5fa4b20b | 887 | |
e0e89f40 | 888 | |
8d2cd130 | 889 | Int_t* pParent = new Int_t[np]; |
890 | for (i=0; i< np; i++) pParent[i] = -1; | |
9dfe63b3 | 891 | // |
892 | //TO BE CHECKED: Should we require this for Beauty Jets? | |
893 | // | |
894 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets) { | |
8507138f | 895 | TParticle* jet1 = (TParticle *) fParticles.At(6); |
896 | TParticle* jet2 = (TParticle *) fParticles.At(7); | |
234f6d32 | 897 | if (!CheckTrigger(jet1, jet2)) { |
898 | delete [] pParent; | |
899 | return 0; | |
900 | } | |
8d2cd130 | 901 | } |
e0e89f40 | 902 | |
9fd8e520 | 903 | // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL |
904 | if (fProcess == kPyJets && (fFragPhotonInCalo || fPi0InCalo) ) { | |
ec2c406e | 905 | |
906 | Bool_t ok = kFALSE; | |
907 | ||
908 | Int_t pdg = 0; | |
9fd8e520 | 909 | if (fFragPhotonInCalo) pdg = 22 ; // Photon |
82e0bdff | 910 | else if (fPi0InCalo) pdg = 111 ; // Pi0 |
ec2c406e | 911 | |
912 | for (i=0; i< np; i++) { | |
8507138f | 913 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
ec2c406e | 914 | if(iparticle->GetStatusCode()==1 && iparticle->GetPdgCode()==pdg && |
9fd8e520 | 915 | iparticle->Pt() > fFragPhotonOrPi0MinPt){ |
562cbbcf | 916 | Int_t imother = iparticle->GetFirstMother() - 1; |
8507138f | 917 | TParticle* pmother = (TParticle *) fParticles.At(imother); |
9fd8e520 | 918 | if(pdg == 111 || |
82e0bdff | 919 | (pdg == 22 && pmother->GetStatusCode() != 11)) //No photon from hadron decay |
9fd8e520 | 920 | { |
921 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
82e0bdff | 922 | Float_t eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax |
9fd8e520 | 923 | if((fCheckEMCAL && IsInEMCAL(phi,eta)) || |
924 | (fCheckPHOS && IsInPHOS(phi,eta)) ) | |
925 | ok =kTRUE; | |
926 | } | |
ec2c406e | 927 | } |
928 | } | |
929 | if(!ok) | |
930 | return 0; | |
931 | } | |
9dfe63b3 | 932 | |
933 | // Select beauty jets with electron in EMCAL | |
934 | if (fProcess == kPyBeautyJets && fEleInEMCAL) { | |
935 | ||
936 | Bool_t ok = kFALSE; | |
937 | ||
938 | Int_t pdg = 11; //electron | |
939 | ||
70574ff8 | 940 | Float_t pt = 0.; |
941 | Float_t eta = 0.; | |
942 | Float_t phi = 0.; | |
9dfe63b3 | 943 | for (i=0; i< np; i++) { |
944 | TParticle* iparticle = (TParticle *) fParticles.At(i); | |
945 | if(iparticle->GetStatusCode()==1 && TMath::Abs(iparticle->GetPdgCode())==pdg && | |
946 | iparticle->Pt() > fElectronMinPt){ | |
947 | pt = iparticle->Pt(); | |
948 | phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees | |
949 | eta =TMath::Abs(iparticle->Eta()); //in calos etamin=-etamax | |
950 | if(IsInEMCAL(phi,eta)) | |
951 | ok =kTRUE; | |
952 | } | |
953 | } | |
954 | if(!ok) | |
955 | return 0; | |
956 | AliDebug(5,Form("Found an electron jet (pt,eta,phi) = (%f,%f,%f)",pt,eta,phi)); | |
957 | } | |
ec2c406e | 958 | |
700b9416 | 959 | // Check for minimum multiplicity |
960 | if (fTriggerMultiplicity > 0) { | |
961 | Int_t multiplicity = 0; | |
962 | for (i = 0; i < np; i++) { | |
8507138f | 963 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
700b9416 | 964 | |
965 | Int_t statusCode = iparticle->GetStatusCode(); | |
966 | ||
967 | // Initial state particle | |
968 | if (statusCode > 20) | |
969 | continue; | |
970 | ||
971 | // skip quarks and gluons | |
972 | Int_t pdgCode = TMath::Abs(iparticle->GetPdgCode()); | |
973 | if (pdgCode <= 10 || pdgCode == 21) | |
974 | continue; | |
975 | ||
976 | if (fTriggerMultiplicityEta > 0 && TMath::Abs(iparticle->Eta()) > fTriggerMultiplicityEta) | |
977 | continue; | |
978 | ||
979 | TParticlePDG* pdgPart = iparticle->GetPDG(); | |
980 | if (pdgPart && pdgPart->Charge() == 0) | |
981 | continue; | |
982 | ||
983 | ++multiplicity; | |
984 | } | |
985 | ||
986 | if (multiplicity < fTriggerMultiplicity) { | |
987 | delete [] pParent; | |
988 | return 0; | |
989 | } | |
990 | ||
991 | Printf("Triggered on event with multiplicity of %d > %d", multiplicity, fTriggerMultiplicity); | |
992 | } | |
90a236ce | 993 | |
994 | // Select events with a photon pt > min pt going to PHOS eta acceptance or exactly PHOS eta phi | |
995 | if ((fProcess == kPyJets || fProcess == kPyDirectGamma) && fPhotonInCalo && (fCheckPHOSeta || fCheckPHOS)){ | |
996 | ||
997 | Bool_t okd = kFALSE; | |
998 | ||
999 | Int_t pdg = 22; | |
1000 | Int_t iphcand = -1; | |
1001 | for (i=0; i< np; i++) { | |
8507138f | 1002 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1003 | Float_t phi = iparticle->Phi()*180./TMath::Pi(); //Convert to degrees |
1004 | Float_t eta =TMath::Abs(iparticle->Eta());//in calos etamin=-etamax | |
1005 | ||
1006 | if(iparticle->GetStatusCode() == 1 | |
1007 | && iparticle->GetPdgCode() == pdg | |
1008 | && iparticle->Pt() > fPhotonMinPt | |
04a26b0a | 1009 | && eta < fPHOSEta){ |
90a236ce | 1010 | |
1011 | // first check if the photon is in PHOS phi | |
1012 | if(IsInPHOS(phi,eta)){ | |
1013 | okd = kTRUE; | |
1014 | break; | |
1015 | } | |
1016 | if(fCheckPHOSeta) iphcand = i; // candiate photon to rotate in phi | |
1017 | ||
1018 | } | |
1019 | } | |
1020 | ||
1021 | if(!okd && iphcand != -1) // execute rotation in phi | |
1022 | RotatePhi(iphcand,okd); | |
1023 | ||
1024 | if(!okd) | |
1025 | return 0; | |
1026 | } | |
1027 | ||
7ce1321b | 1028 | if (fTriggerParticle) { |
1029 | Bool_t triggered = kFALSE; | |
1030 | for (i = 0; i < np; i++) { | |
8507138f | 1031 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
7ce1321b | 1032 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
38db0ee6 | 1033 | if (kf != fTriggerParticle) continue; |
7ce1321b | 1034 | if (iparticle->Pt() == 0.) continue; |
1035 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; | |
1036 | triggered = kTRUE; | |
1037 | break; | |
1038 | } | |
234f6d32 | 1039 | if (!triggered) { |
1040 | delete [] pParent; | |
1041 | return 0; | |
1042 | } | |
7ce1321b | 1043 | } |
e0e89f40 | 1044 | |
1045 | ||
1046 | // Check if there is a ccbar or bbbar pair with at least one of the two | |
1047 | // in fYMin < y < fYMax | |
9dfe63b3 | 1048 | // |
1049 | // TO BE CHECKED: Should we require this for beauty jets? | |
1050 | // | |
1051 | if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi || fProcess == kPyBeautyJets) { | |
9ccc3d0e | 1052 | TParticle *partCheck; |
1053 | TParticle *mother; | |
e0e89f40 | 1054 | Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE; |
9ccc3d0e | 1055 | Bool_t theChild=kFALSE; |
1056 | Float_t y; | |
1057 | Int_t pdg,mpdg,mpdgUpperFamily; | |
e0e89f40 | 1058 | for(i=0; i<np; i++) { |
9ccc3d0e | 1059 | partCheck = (TParticle*)fParticles.At(i); |
1060 | pdg = partCheck->GetPdgCode(); | |
1061 | if(TMath::Abs(pdg) == fFlavorSelect) { // quark | |
1062 | if(pdg>0) { theQ=kTRUE; } else { theQbar=kTRUE; } | |
1063 | y = 0.5*TMath::Log((partCheck->Energy()+partCheck->Pz()+1.e-13)/ | |
1064 | (partCheck->Energy()-partCheck->Pz()+1.e-13)); | |
1065 | if(y>fYMin && y<fYMax) inYcut=kTRUE; | |
1066 | } | |
1067 | if(fCutOnChild && TMath::Abs(pdg) == fPdgCodeParticleforAcceptanceCut) { | |
1068 | Int_t mi = partCheck->GetFirstMother() - 1; | |
1069 | if(mi<0) continue; | |
1070 | mother = (TParticle*)fParticles.At(mi); | |
1071 | mpdg=TMath::Abs(mother->GetPdgCode()); | |
75fde694 | 1072 | mpdgUpperFamily=(mpdg>1000 ? mpdg+1000 : mpdg+100); // keep e from c from b |
9ccc3d0e | 1073 | if ( ParentSelected(mpdg) || |
1074 | (fFlavorSelect==5 && ParentSelected(mpdgUpperFamily))) { | |
1075 | if (KinematicSelection(partCheck,1)) { | |
1076 | theChild=kTRUE; | |
1077 | } | |
1078 | } | |
1079 | } | |
e0e89f40 | 1080 | } |
9ccc3d0e | 1081 | if (!theQ || !theQbar || !inYcut) { // one of the c/b conditions not satisfied |
234f6d32 | 1082 | delete[] pParent; |
e0e89f40 | 1083 | return 0; |
1084 | } | |
9ccc3d0e | 1085 | if (fCutOnChild && !theChild) { // one of the child conditions not satisfied |
1086 | delete[] pParent; | |
1087 | return 0; | |
1088 | } | |
1089 | ||
e0e89f40 | 1090 | } |
aea21c57 | 1091 | |
0f6ee828 | 1092 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff |
f529e69b | 1093 | if ( (fProcess == kPyW || |
1094 | fProcess == kPyZ || | |
1095 | fProcess == kPyMbDefault || | |
1096 | fProcess == kPyMb || | |
04081a91 | 1097 | fProcess == kPyMbWithDirectPhoton || |
f529e69b | 1098 | fProcess == kPyMbNonDiffr) |
0f6ee828 | 1099 | && (fCutOnChild == 1) ) { |
1100 | if ( !CheckKinematicsOnChild() ) { | |
234f6d32 | 1101 | delete[] pParent; |
0f6ee828 | 1102 | return 0; |
1103 | } | |
aea21c57 | 1104 | } |
1105 | ||
1106 | ||
f913ec4f | 1107 | for (i = 0; i < np; i++) { |
8d2cd130 | 1108 | Int_t trackIt = 0; |
8507138f | 1109 | TParticle * iparticle = (TParticle *) fParticles.At(i); |
8d2cd130 | 1110 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
1111 | Int_t ks = iparticle->GetStatusCode(); | |
1112 | Int_t km = iparticle->GetFirstMother(); | |
1113 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || | |
1114 | (ks != 1) || | |
9dfe63b3 | 1115 | // |
1116 | //TO BE CHECKED: Should we require this for beauty jets? | |
1117 | // | |
1118 | ((fProcess == kPyJets || fProcess == kPyBeautyJets) && ks == 21 && km == 0 && i>1)) { | |
8d2cd130 | 1119 | nc++; |
1120 | if (ks == 1) trackIt = 1; | |
1121 | Int_t ipa = iparticle->GetFirstMother()-1; | |
1122 | ||
1123 | iparent = (ipa > -1) ? pParent[ipa] : -1; | |
1124 | ||
1125 | // | |
1126 | // store track information | |
1127 | p[0] = iparticle->Px(); | |
1128 | p[1] = iparticle->Py(); | |
1129 | p[2] = iparticle->Pz(); | |
a920faf9 | 1130 | p[3] = iparticle->Energy(); |
1406f599 | 1131 | |
a920faf9 | 1132 | |
2590ccf9 | 1133 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
1134 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] | |
1135 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] | |
1136 | ||
f913ec4f | 1137 | Float_t tof = fEventTime + kconv * iparticle->T(); |
a920faf9 | 1138 | |
1139 | PushTrack(fTrackIt*trackIt, iparent, kf, | |
1140 | p[0], p[1], p[2], p[3], | |
1141 | origin[0], origin[1], origin[2], tof, | |
1142 | polar[0], polar[1], polar[2], | |
1143 | kPPrimary, nt, 1., ks); | |
dbd64db6 | 1144 | fNprimaries++; |
8d2cd130 | 1145 | KeepTrack(nt); |
1146 | pParent[i] = nt; | |
f913ec4f | 1147 | SetHighWaterMark(nt); |
1148 | ||
8d2cd130 | 1149 | } // select particle |
1150 | } // particle loop | |
1151 | ||
234f6d32 | 1152 | delete[] pParent; |
e0e89f40 | 1153 | |
f913ec4f | 1154 | return 1; |
8d2cd130 | 1155 | } |
1156 | ||
1157 | ||
1158 | void AliGenPythia::FinishRun() | |
1159 | { | |
1160 | // Print x-section summary | |
1161 | fPythia->Pystat(1); | |
2779fc64 | 1162 | |
1163 | if (fNev > 0.) { | |
1164 | fQ /= fNev; | |
1165 | fX1 /= fNev; | |
1166 | fX2 /= fNev; | |
1167 | } | |
1168 | ||
8d2cd130 | 1169 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); |
1170 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); | |
8d2cd130 | 1171 | } |
1172 | ||
7184e472 | 1173 | void AliGenPythia::AdjustWeights() const |
8d2cd130 | 1174 | { |
1175 | // Adjust the weights after generation of all events | |
1176 | // | |
e2bddf81 | 1177 | if (gAlice) { |
1178 | TParticle *part; | |
1179 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); | |
1180 | for (Int_t i=0; i<ntrack; i++) { | |
1181 | part= gAlice->GetMCApp()->Particle(i); | |
1182 | part->SetWeight(part->GetWeight()*fKineBias); | |
1183 | } | |
8d2cd130 | 1184 | } |
1185 | } | |
1186 | ||
20e47f08 | 1187 | void AliGenPythia::SetNuclei(Int_t a1, Int_t a2, Int_t pdfset) |
8d2cd130 | 1188 | { |
1189 | // Treat protons as inside nuclei with mass numbers a1 and a2 | |
1d568bc2 | 1190 | |
1a626d4e | 1191 | fAProjectile = a1; |
1192 | fATarget = a2; | |
20e47f08 | 1193 | fNucPdf = pdfset; // 0 EKS98 1 EPS08 |
1d568bc2 | 1194 | fSetNuclei = kTRUE; |
8d2cd130 | 1195 | } |
1196 | ||
1197 | ||
1198 | void AliGenPythia::MakeHeader() | |
1199 | { | |
7184e472 | 1200 | // |
1201 | // Make header for the simulated event | |
1202 | // | |
183a5ca9 | 1203 | if (gAlice) { |
1204 | if (gAlice->GetEvNumber()>=fDebugEventFirst && | |
f913ec4f | 1205 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2); |
183a5ca9 | 1206 | } |
1207 | ||
8d2cd130 | 1208 | // Builds the event header, to be called after each event |
e5c87a3d | 1209 | if (fHeader) delete fHeader; |
1210 | fHeader = new AliGenPythiaEventHeader("Pythia"); | |
8d2cd130 | 1211 | // |
1212 | // Event type | |
e5c87a3d | 1213 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1)); |
8d2cd130 | 1214 | // |
1215 | // Number of trials | |
e5c87a3d | 1216 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); |
8d2cd130 | 1217 | // |
1218 | // Event Vertex | |
d25cfd65 | 1219 | fHeader->SetPrimaryVertex(fVertex); |
dbd64db6 | 1220 | |
1221 | // | |
1222 | // Number of primaries | |
1223 | fHeader->SetNProduced(fNprimaries); | |
8d2cd130 | 1224 | // |
1225 | // Jets that have triggered | |
f913ec4f | 1226 | |
9dfe63b3 | 1227 | //Need to store jets for b-jet studies too! |
1228 | if (fProcess == kPyJets || fProcess == kPyDirectGamma || fProcess == kPyBeautyJets) | |
8d2cd130 | 1229 | { |
1230 | Int_t ntrig, njet; | |
1231 | Float_t jets[4][10]; | |
1232 | GetJets(njet, ntrig, jets); | |
9ff6c04c | 1233 | |
8d2cd130 | 1234 | |
1235 | for (Int_t i = 0; i < ntrig; i++) { | |
e5c87a3d | 1236 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], |
8d2cd130 | 1237 | jets[3][i]); |
1238 | } | |
1239 | } | |
5fa4b20b | 1240 | // |
1241 | // Copy relevant information from external header, if present. | |
1242 | // | |
1243 | Float_t uqJet[4]; | |
1244 | ||
1245 | if (fRL) { | |
1246 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); | |
1247 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) | |
1248 | { | |
1249 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); | |
1250 | ||
1251 | ||
1252 | exHeader->TriggerJet(i, uqJet); | |
1253 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); | |
1254 | } | |
1255 | } | |
1256 | // | |
1257 | // Store quenching parameters | |
1258 | // | |
1259 | if (fQuench){ | |
1260 | Double_t z[4]; | |
1261 | Double_t xp, yp; | |
7c21f297 | 1262 | if (fQuench == 1) { |
1263 | // Pythia::Quench() | |
1264 | fPythia->GetQuenchingParameters(xp, yp, z); | |
1bab4b79 | 1265 | } else if (fQuench == 2){ |
7c21f297 | 1266 | // Pyquen |
1267 | Double_t r1 = PARIMP.rb1; | |
1268 | Double_t r2 = PARIMP.rb2; | |
1269 | Double_t b = PARIMP.b1; | |
1270 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); | |
1271 | Double_t phi = PARIMP.psib1; | |
1272 | xp = r * TMath::Cos(phi); | |
1273 | yp = r * TMath::Sin(phi); | |
1274 | ||
1bab4b79 | 1275 | } else if (fQuench == 4) { |
1276 | // QPythia | |
5831e75f | 1277 | Double_t xy[2]; |
e9719084 | 1278 | Double_t i0i1[2]; |
1279 | AliFastGlauber::Instance()->GetSavedXY(xy); | |
1280 | AliFastGlauber::Instance()->GetSavedI0I1(i0i1); | |
5831e75f | 1281 | xp = xy[0]; |
1282 | yp = xy[1]; | |
e6fe9b82 | 1283 | ((AliGenPythiaEventHeader*) fHeader)->SetImpactParameter(fImpact); |
7c21f297 | 1284 | } |
1bab4b79 | 1285 | |
7c21f297 | 1286 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); |
1287 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); | |
1bab4b79 | 1288 | } |
beac474c | 1289 | // |
1290 | // Store pt^hard | |
1291 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47)); | |
5fa4b20b | 1292 | // |
cf57b268 | 1293 | // Pass header |
5fa4b20b | 1294 | // |
cf57b268 | 1295 | AddHeader(fHeader); |
4c4eac97 | 1296 | fHeader = 0x0; |
8d2cd130 | 1297 | } |
cf57b268 | 1298 | |
8d2cd130 | 1299 | Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2) |
1300 | { | |
1301 | // Check the kinematic trigger condition | |
1302 | // | |
1303 | Double_t eta[2]; | |
1304 | eta[0] = jet1->Eta(); | |
1305 | eta[1] = jet2->Eta(); | |
1306 | Double_t phi[2]; | |
1307 | phi[0] = jet1->Phi(); | |
1308 | phi[1] = jet2->Phi(); | |
1309 | Int_t pdg[2]; | |
1310 | pdg[0] = jet1->GetPdgCode(); | |
1311 | pdg[1] = jet2->GetPdgCode(); | |
1312 | Bool_t triggered = kFALSE; | |
1313 | ||
9dfe63b3 | 1314 | // |
1315 | //TO BE CHECKED: If we call this method for kPyBeautyJets, we need it here | |
1316 | // | |
1317 | if (fProcess == kPyJets || fProcess == kPyBeautyJets) { | |
8d2cd130 | 1318 | Int_t njets = 0; |
1319 | Int_t ntrig = 0; | |
1320 | Float_t jets[4][10]; | |
1321 | // | |
1322 | // Use Pythia clustering on parton level to determine jet axis | |
1323 | // | |
1324 | GetJets(njets, ntrig, jets); | |
1325 | ||
76d6ba9a | 1326 | if (ntrig || fEtMinJet == 0.) triggered = kTRUE; |
8d2cd130 | 1327 | // |
1328 | } else { | |
1329 | Int_t ij = 0; | |
1330 | Int_t ig = 1; | |
1331 | if (pdg[0] == kGamma) { | |
1332 | ij = 1; | |
1333 | ig = 0; | |
1334 | } | |
1335 | //Check eta range first... | |
1336 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && | |
1337 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) | |
1338 | { | |
1339 | //Eta is okay, now check phi range | |
1340 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && | |
1341 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) | |
1342 | { | |
1343 | triggered = kTRUE; | |
1344 | } | |
1345 | } | |
1346 | } | |
1347 | return triggered; | |
1348 | } | |
aea21c57 | 1349 | |
1350 | ||
aea21c57 | 1351 | |
7184e472 | 1352 | Bool_t AliGenPythia::CheckKinematicsOnChild(){ |
1353 | // | |
1354 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts | |
1355 | // | |
aea21c57 | 1356 | Bool_t checking = kFALSE; |
1357 | Int_t j, kcode, ks, km; | |
1358 | Int_t nPartAcc = 0; //number of particles in the acceptance range | |
1359 | Int_t numberOfAcceptedParticles = 1; | |
1360 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } | |
8507138f | 1361 | Int_t npart = fParticles.GetEntriesFast(); |
aea21c57 | 1362 | |
0f6ee828 | 1363 | for (j = 0; j<npart; j++) { |
8507138f | 1364 | TParticle * jparticle = (TParticle *) fParticles.At(j); |
aea21c57 | 1365 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
1366 | ks = jparticle->GetStatusCode(); | |
1367 | km = jparticle->GetFirstMother(); | |
1368 | ||
1369 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ | |
1370 | nPartAcc++; | |
1371 | } | |
0f6ee828 | 1372 | if( numberOfAcceptedParticles <= nPartAcc){ |
1373 | checking = kTRUE; | |
1374 | break; | |
1375 | } | |
aea21c57 | 1376 | } |
0f6ee828 | 1377 | |
aea21c57 | 1378 | return checking; |
aea21c57 | 1379 | } |
1380 | ||
5fa4b20b | 1381 | void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr) |
8d2cd130 | 1382 | { |
1058d9df | 1383 | // |
1384 | // Load event into Pythia Common Block | |
1385 | // | |
1386 | ||
1387 | Int_t npart = stack -> GetNprimary(); | |
1388 | Int_t n0 = 0; | |
1389 | ||
1390 | if (!flag) { | |
1391 | (fPythia->GetPyjets())->N = npart; | |
1392 | } else { | |
1393 | n0 = (fPythia->GetPyjets())->N; | |
1394 | (fPythia->GetPyjets())->N = n0 + npart; | |
1395 | } | |
1396 | ||
1397 | ||
1398 | for (Int_t part = 0; part < npart; part++) { | |
1399 | TParticle *mPart = stack->Particle(part); | |
32d6ef7d | 1400 | |
1058d9df | 1401 | Int_t kf = mPart->GetPdgCode(); |
1402 | Int_t ks = mPart->GetStatusCode(); | |
1403 | Int_t idf = mPart->GetFirstDaughter(); | |
1404 | Int_t idl = mPart->GetLastDaughter(); | |
1405 | ||
1406 | if (reHadr) { | |
1407 | if (ks == 11 || ks == 12) { | |
1408 | ks -= 10; | |
1409 | idf = -1; | |
1410 | idl = -1; | |
1411 | } | |
32d6ef7d | 1412 | } |
1413 | ||
1058d9df | 1414 | Float_t px = mPart->Px(); |
1415 | Float_t py = mPart->Py(); | |
1416 | Float_t pz = mPart->Pz(); | |
1417 | Float_t e = mPart->Energy(); | |
1418 | Float_t m = mPart->GetCalcMass(); | |
32d6ef7d | 1419 | |
1058d9df | 1420 | |
1421 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1422 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1423 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1424 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1425 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1426 | ||
1427 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1428 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1429 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1430 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1431 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | void AliGenPythia::LoadEvent(TObjArray* stack, Int_t flag, Int_t reHadr) | |
1436 | { | |
1437 | // | |
1438 | // Load event into Pythia Common Block | |
1439 | // | |
1440 | ||
1441 | Int_t npart = stack -> GetEntries(); | |
1442 | Int_t n0 = 0; | |
1443 | ||
1444 | if (!flag) { | |
1445 | (fPythia->GetPyjets())->N = npart; | |
1446 | } else { | |
1447 | n0 = (fPythia->GetPyjets())->N; | |
1448 | (fPythia->GetPyjets())->N = n0 + npart; | |
1449 | } | |
1450 | ||
1451 | ||
1452 | for (Int_t part = 0; part < npart; part++) { | |
1453 | TParticle *mPart = dynamic_cast<TParticle *>(stack->At(part)); | |
1454 | Int_t kf = mPart->GetPdgCode(); | |
1455 | Int_t ks = mPart->GetStatusCode(); | |
1456 | Int_t idf = mPart->GetFirstDaughter(); | |
1457 | Int_t idl = mPart->GetLastDaughter(); | |
1458 | ||
1459 | if (reHadr) { | |
5fa4b20b | 1460 | if (ks == 11 || ks == 12) { |
1058d9df | 1461 | ks -= 10; |
1462 | idf = -1; | |
1463 | idl = -1; | |
5fa4b20b | 1464 | } |
8d2cd130 | 1465 | } |
1058d9df | 1466 | |
1467 | Float_t px = mPart->Px(); | |
1468 | Float_t py = mPart->Py(); | |
1469 | Float_t pz = mPart->Pz(); | |
1470 | Float_t e = mPart->Energy(); | |
1471 | Float_t m = mPart->GetCalcMass(); | |
1472 | ||
1473 | ||
1474 | (fPythia->GetPyjets())->P[0][part+n0] = px; | |
1475 | (fPythia->GetPyjets())->P[1][part+n0] = py; | |
1476 | (fPythia->GetPyjets())->P[2][part+n0] = pz; | |
1477 | (fPythia->GetPyjets())->P[3][part+n0] = e; | |
1478 | (fPythia->GetPyjets())->P[4][part+n0] = m; | |
1479 | ||
1480 | (fPythia->GetPyjets())->K[1][part+n0] = kf; | |
1481 | (fPythia->GetPyjets())->K[0][part+n0] = ks; | |
1482 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; | |
1483 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; | |
1484 | (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1; | |
1485 | } | |
8d2cd130 | 1486 | } |
1487 | ||
5fa4b20b | 1488 | |
014a9521 | 1489 | void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) |
8d2cd130 | 1490 | { |
1491 | // | |
1492 | // Calls the Pythia jet finding algorithm to find jets in the current event | |
1493 | // | |
1494 | // | |
8d2cd130 | 1495 | // |
1496 | // Save jets | |
1497 | Int_t n = fPythia->GetN(); | |
1498 | ||
1499 | // | |
1500 | // Run Jet Finder | |
1501 | fPythia->Pycell(njets); | |
1502 | Int_t i; | |
1503 | for (i = 0; i < njets; i++) { | |
1504 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1505 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1506 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1507 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1508 | ||
1509 | jets[0][i] = px; | |
1510 | jets[1][i] = py; | |
1511 | jets[2][i] = pz; | |
1512 | jets[3][i] = e; | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | ||
1517 | ||
1518 | void AliGenPythia::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) | |
1519 | { | |
1520 | // | |
1521 | // Calls the Pythia clustering algorithm to find jets in the current event | |
1522 | // | |
1523 | Int_t n = fPythia->GetN(); | |
1524 | nJets = 0; | |
1525 | nJetsTrig = 0; | |
1526 | if (fJetReconstruction == kCluster) { | |
1527 | // | |
1528 | // Configure cluster algorithm | |
1529 | // | |
1530 | fPythia->SetPARU(43, 2.); | |
1531 | fPythia->SetMSTU(41, 1); | |
1532 | // | |
1533 | // Call cluster algorithm | |
1534 | // | |
1535 | fPythia->Pyclus(nJets); | |
1536 | // | |
1537 | // Loading jets from common block | |
1538 | // | |
1539 | } else { | |
592f8307 | 1540 | |
8d2cd130 | 1541 | // |
1542 | // Run Jet Finder | |
1543 | fPythia->Pycell(nJets); | |
1544 | } | |
1545 | ||
1546 | Int_t i; | |
1547 | for (i = 0; i < nJets; i++) { | |
1548 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; | |
1549 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; | |
1550 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; | |
1551 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; | |
1552 | Float_t pt = TMath::Sqrt(px * px + py * py); | |
a920faf9 | 1553 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); |
8d2cd130 | 1554 | Float_t theta = TMath::ATan2(pt,pz); |
1555 | Float_t et = e * TMath::Sin(theta); | |
1556 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); | |
8d2cd130 | 1557 | if ( |
1558 | eta > fEtaMinJet && eta < fEtaMaxJet && | |
675eb105 | 1559 | phi > fPhiMinJet && phi < fPhiMaxJet && |
8d2cd130 | 1560 | et > fEtMinJet && et < fEtMaxJet |
1561 | ) | |
1562 | { | |
1563 | jets[0][nJetsTrig] = px; | |
1564 | jets[1][nJetsTrig] = py; | |
1565 | jets[2][nJetsTrig] = pz; | |
1566 | jets[3][nJetsTrig] = e; | |
1567 | nJetsTrig++; | |
5fa4b20b | 1568 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
8d2cd130 | 1569 | } else { |
1570 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); | |
1571 | } | |
1572 | } | |
1573 | } | |
1574 | ||
f913ec4f | 1575 | void AliGenPythia::GetSubEventTime() |
1576 | { | |
1577 | // Calculates time of the next subevent | |
9d7108a7 | 1578 | fEventTime = 0.; |
1579 | if (fEventsTime) { | |
1580 | TArrayF &array = *fEventsTime; | |
1581 | fEventTime = array[fCurSubEvent++]; | |
1582 | } | |
1583 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); | |
1584 | return; | |
f913ec4f | 1585 | } |
8d2cd130 | 1586 | |
ec2c406e | 1587 | Bool_t AliGenPythia::IsInEMCAL(Float_t phi, Float_t eta) |
1588 | { | |
1589 | // Is particle in EMCAL acceptance? | |
ec2c406e | 1590 | // phi in degrees, etamin=-etamax |
9fd8e520 | 1591 | if(phi > fEMCALMinPhi && phi < fEMCALMaxPhi && |
1592 | eta < fEMCALEta ) | |
ec2c406e | 1593 | return kTRUE; |
1594 | else | |
1595 | return kFALSE; | |
1596 | } | |
1597 | ||
1598 | Bool_t AliGenPythia::IsInPHOS(Float_t phi, Float_t eta) | |
1599 | { | |
1600 | // Is particle in PHOS acceptance? | |
1601 | // Acceptance slightly larger considered. | |
1602 | // phi in degrees, etamin=-etamax | |
9fd8e520 | 1603 | if(phi > fPHOSMinPhi && phi < fPHOSMaxPhi && |
1604 | eta < fPHOSEta ) | |
ec2c406e | 1605 | return kTRUE; |
1606 | else | |
1607 | return kFALSE; | |
1608 | } | |
1609 | ||
90a236ce | 1610 | void AliGenPythia::RotatePhi(Int_t iphcand, Bool_t& okdd) |
1611 | { | |
1612 | //calculate the new position random between fPHOSMinPhi and fPHOSMaxPhi | |
1613 | Double_t phiPHOSmin = TMath::Pi()*fPHOSMinPhi/180; | |
1614 | Double_t phiPHOSmax = TMath::Pi()*fPHOSMaxPhi/180; | |
1615 | Double_t phiPHOS = gRandom->Uniform(phiPHOSmin,phiPHOSmax); | |
1616 | ||
1617 | //calculate deltaphi | |
8507138f | 1618 | TParticle* ph = (TParticle *) fParticles.At(iphcand); |
90a236ce | 1619 | Double_t phphi = ph->Phi(); |
1620 | Double_t deltaphi = phiPHOS - phphi; | |
1621 | ||
1622 | ||
1623 | ||
1624 | //loop for all particles and produce the phi rotation | |
8507138f | 1625 | Int_t np = (fHadronisation) ? fParticles.GetEntriesFast() : fNpartons; |
90a236ce | 1626 | Double_t oldphi, newphi; |
1627 | Double_t newVx, newVy, R, Vz, time; | |
1628 | Double_t newPx, newPy, pt, Pz, e; | |
1629 | for(Int_t i=0; i< np; i++) { | |
8507138f | 1630 | TParticle* iparticle = (TParticle *) fParticles.At(i); |
90a236ce | 1631 | oldphi = iparticle->Phi(); |
1632 | newphi = oldphi + deltaphi; | |
1633 | if(newphi < 0) newphi = 2*TMath::Pi() + newphi; // correct angle | |
1634 | if(newphi > 2*TMath::Pi()) newphi = newphi - 2*TMath::Pi(); // correct angle | |
1635 | ||
1636 | R = iparticle->R(); | |
1637 | newVx = R*TMath::Cos(newphi); | |
1638 | newVy = R*TMath::Sin(newphi); | |
1639 | Vz = iparticle->Vz(); // don't transform | |
1640 | time = iparticle->T(); // don't transform | |
1641 | ||
1642 | pt = iparticle->Pt(); | |
1643 | newPx = pt*TMath::Cos(newphi); | |
1644 | newPy = pt*TMath::Sin(newphi); | |
1645 | Pz = iparticle->Pz(); // don't transform | |
1646 | e = iparticle->Energy(); // don't transform | |
1647 | ||
1648 | // apply rotation | |
1649 | iparticle->SetProductionVertex(newVx, newVy, Vz, time); | |
1650 | iparticle->SetMomentum(newPx, newPy, Pz, e); | |
1651 | ||
1652 | } //end particle loop | |
1653 | ||
1654 | // now let's check that we put correctly the candidate photon in PHOS | |
1655 | Float_t phi = ph->Phi()*180./TMath::Pi(); //Convert to degrees | |
1656 | Float_t eta =TMath::Abs(ph->Eta());//in calos etamin=-etamax | |
1657 | if(IsInPHOS(phi,eta)) | |
1658 | okdd = kTRUE; | |
1659 | } | |
ec2c406e | 1660 | |
1661 | ||
8d2cd130 | 1662 | #ifdef never |
1663 | void AliGenPythia::Streamer(TBuffer &R__b) | |
1664 | { | |
1665 | // Stream an object of class AliGenPythia. | |
1666 | ||
1667 | if (R__b.IsReading()) { | |
1668 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1669 | AliGenerator::Streamer(R__b); | |
1670 | R__b >> (Int_t&)fProcess; | |
1671 | R__b >> (Int_t&)fStrucFunc; | |
1672 | R__b >> (Int_t&)fForceDecay; | |
1673 | R__b >> fEnergyCMS; | |
1674 | R__b >> fKineBias; | |
1675 | R__b >> fTrials; | |
1676 | fParentSelect.Streamer(R__b); | |
1677 | fChildSelect.Streamer(R__b); | |
1678 | R__b >> fXsection; | |
1679 | // (AliPythia::Instance())->Streamer(R__b); | |
1680 | R__b >> fPtHardMin; | |
1681 | R__b >> fPtHardMax; | |
1682 | // if (fDecayer) fDecayer->Streamer(R__b); | |
1683 | } else { | |
1684 | R__b.WriteVersion(AliGenPythia::IsA()); | |
1685 | AliGenerator::Streamer(R__b); | |
1686 | R__b << (Int_t)fProcess; | |
1687 | R__b << (Int_t)fStrucFunc; | |
1688 | R__b << (Int_t)fForceDecay; | |
1689 | R__b << fEnergyCMS; | |
1690 | R__b << fKineBias; | |
1691 | R__b << fTrials; | |
1692 | fParentSelect.Streamer(R__b); | |
1693 | fChildSelect.Streamer(R__b); | |
1694 | R__b << fXsection; | |
1695 | // R__b << fPythia; | |
1696 | R__b << fPtHardMin; | |
1697 | R__b << fPtHardMax; | |
1698 | // fDecayer->Streamer(R__b); | |
1699 | } | |
1700 | } | |
1701 | #endif | |
1702 | ||
90d7b703 | 1703 | |
589380c6 | 1704 |