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 | |
28 | #include <TDatabasePDG.h> |
29 | #include <TParticle.h> |
30 | #include <TPDGCode.h> |
31 | #include <TSystem.h> |
32 | #include <TTree.h> |
8d2cd130 |
33 | #include "AliConst.h" |
34 | #include "AliDecayerPythia.h" |
35 | #include "AliGenPythia.h" |
5fa4b20b |
36 | #include "AliHeader.h" |
8d2cd130 |
37 | #include "AliGenPythiaEventHeader.h" |
38 | #include "AliPythia.h" |
7cdba479 |
39 | #include "AliPythiaRndm.h" |
8d2cd130 |
40 | #include "AliRun.h" |
7ea3ea5b |
41 | #include "AliStack.h" |
42 | #include "AliRunLoader.h" |
5d12ce38 |
43 | #include "AliMC.h" |
7c21f297 |
44 | #include "pyquenCommon.h" |
8d2cd130 |
45 | |
014a9521 |
46 | ClassImp(AliGenPythia) |
8d2cd130 |
47 | |
48 | AliGenPythia::AliGenPythia() |
49 | :AliGenMC() |
50 | { |
51 | // Default Constructor |
52 | fParticles = 0; |
53 | fPythia = 0; |
e5c87a3d |
54 | fHeader = 0; |
5fffd0fe |
55 | fReadFromFile = 0; |
f913ec4f |
56 | fEventTime = 0.; |
8ec89232 |
57 | fInteractionRate = 0.; |
9d7108a7 |
58 | fTimeWindow = 0.; |
59 | fEventsTime = 0; |
60 | fCurSubEvent = 0; |
8d2cd130 |
61 | fDecayer = new AliDecayerPythia(); |
62 | SetEventListRange(); |
63 | SetJetPhiRange(); |
64 | SetJetEtaRange(); |
65 | SetJetEtRange(); |
66 | SetGammaPhiRange(); |
67 | SetGammaEtaRange(); |
7ce1321b |
68 | SetTriggerParticle(); |
8d2cd130 |
69 | SetPtKick(); |
7ea3ea5b |
70 | SetQuench(); |
5fa4b20b |
71 | SetHadronisation(); |
1d568bc2 |
72 | fSetNuclei = kFALSE; |
beac474c |
73 | fNewMIS = kFALSE; |
74 | fHFoff = kFALSE; |
7cdba479 |
75 | if (!AliPythiaRndm::GetPythiaRandom()) |
76 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 |
77 | } |
78 | |
79 | AliGenPythia::AliGenPythia(Int_t npart) |
80 | :AliGenMC(npart) |
81 | { |
82 | // default charm production at 5. 5 TeV |
83 | // semimuonic decay |
84 | // structure function GRVHO |
85 | // |
86 | fName = "Pythia"; |
87 | fTitle= "Particle Generator using PYTHIA"; |
88 | fXsection = 0.; |
5fffd0fe |
89 | fReadFromFile = 0; |
f913ec4f |
90 | fEventTime = 0.; |
8ec89232 |
91 | fInteractionRate = 0.; |
9d7108a7 |
92 | fTimeWindow = 0.; |
93 | fEventsTime = 0; |
94 | fCurSubEvent = 0; |
8d2cd130 |
95 | SetProcess(); |
96 | SetStrucFunc(); |
97 | SetForceDecay(); |
98 | SetPtHard(); |
99 | SetYHard(); |
100 | SetEnergyCMS(); |
101 | fDecayer = new AliDecayerPythia(); |
102 | // Set random number generator |
7cdba479 |
103 | if (!AliPythiaRndm::GetPythiaRandom()) |
104 | AliPythiaRndm::SetPythiaRandom(GetRandom()); |
8d2cd130 |
105 | fFlavorSelect = 0; |
106 | // Produced particles |
107 | fParticles = new TClonesArray("TParticle",1000); |
e5c87a3d |
108 | fHeader = 0; |
8d2cd130 |
109 | SetEventListRange(); |
110 | SetJetPhiRange(); |
111 | SetJetEtaRange(); |
112 | SetJetEtRange(); |
113 | SetGammaPhiRange(); |
114 | SetGammaEtaRange(); |
7ce1321b |
115 | SetTriggerParticle(); |
8d2cd130 |
116 | SetJetReconstructionMode(); |
7ea3ea5b |
117 | SetQuench(); |
5fa4b20b |
118 | SetHadronisation(); |
8d2cd130 |
119 | SetPtKick(); |
120 | // Options determining what to keep in the stack (Heavy flavour generation) |
121 | fStackFillOpt = kFlavorSelection; // Keep particle with selected flavor |
122 | fFeedDownOpt = kTRUE; // allow feed down from higher family |
123 | // Fragmentation on/off |
124 | fFragmentation = kTRUE; |
125 | // Default counting mode |
126 | fCountMode = kCountAll; |
592f8307 |
127 | // Pycel |
128 | SetPycellParameters(); |
1d568bc2 |
129 | fSetNuclei = kFALSE; |
beac474c |
130 | fNewMIS = kFALSE; |
131 | fHFoff = kFALSE; |
8d2cd130 |
132 | } |
133 | |
134 | AliGenPythia::AliGenPythia(const AliGenPythia & Pythia) |
f936b8ea |
135 | :AliGenMC(Pythia) |
8d2cd130 |
136 | { |
137 | // copy constructor |
138 | Pythia.Copy(*this); |
139 | } |
140 | |
141 | AliGenPythia::~AliGenPythia() |
142 | { |
143 | // Destructor |
9d7108a7 |
144 | if(fEventsTime) delete fEventsTime; |
145 | } |
146 | |
147 | void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow) |
148 | { |
149 | // Generate pileup using user specified rate |
150 | fInteractionRate = rate; |
151 | fTimeWindow = timewindow; |
152 | GeneratePileup(); |
153 | } |
154 | |
155 | void AliGenPythia::GeneratePileup() |
156 | { |
157 | // Generate sub events time for pileup |
158 | fEventsTime = 0; |
159 | if(fInteractionRate == 0.) { |
160 | Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n"); |
161 | return; |
162 | } |
163 | |
164 | Int_t npart = NumberParticles(); |
165 | if(npart < 0) { |
166 | Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n"); |
167 | return; |
168 | } |
169 | |
170 | if(fEventsTime) delete fEventsTime; |
171 | fEventsTime = new TArrayF(npart); |
172 | TArrayF &array = *fEventsTime; |
173 | for(Int_t ipart = 0; ipart < npart; ipart++) |
174 | array[ipart] = 0.; |
175 | |
176 | Float_t eventtime = 0.; |
177 | while(1) |
178 | { |
179 | eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); |
180 | if(eventtime > fTimeWindow) break; |
181 | array.Set(array.GetSize()+1); |
182 | array[array.GetSize()-1] = eventtime; |
183 | } |
184 | |
185 | eventtime = 0.; |
186 | while(1) |
187 | { |
188 | eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate); |
189 | if(TMath::Abs(eventtime) > fTimeWindow) break; |
190 | array.Set(array.GetSize()+1); |
191 | array[array.GetSize()-1] = eventtime; |
192 | } |
193 | |
194 | SetNumberParticles(fEventsTime->GetSize()); |
8d2cd130 |
195 | } |
196 | |
592f8307 |
197 | void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi, |
198 | Float_t thresh, Float_t etseed, Float_t minet, Float_t r) |
199 | { |
200 | // Set pycell parameters |
201 | fPycellEtaMax = etamax; |
202 | fPycellNEta = neta; |
203 | fPycellNPhi = nphi; |
204 | fPycellThreshold = thresh; |
205 | fPycellEtSeed = etseed; |
206 | fPycellMinEtJet = minet; |
207 | fPycellMaxRadius = r; |
208 | } |
209 | |
210 | |
211 | |
8d2cd130 |
212 | void AliGenPythia::SetEventListRange(Int_t eventFirst, Int_t eventLast) |
213 | { |
214 | // Set a range of event numbers, for which a table |
215 | // of generated particle will be printed |
216 | fDebugEventFirst = eventFirst; |
217 | fDebugEventLast = eventLast; |
218 | if (fDebugEventLast==-1) fDebugEventLast=fDebugEventFirst; |
219 | } |
220 | |
221 | void AliGenPythia::Init() |
222 | { |
223 | // Initialisation |
224 | |
225 | SetMC(AliPythia::Instance()); |
b88f5cea |
226 | fPythia=(AliPythia*) fMCEvGen; |
e2bddf81 |
227 | |
8d2cd130 |
228 | // |
229 | fParentWeight=1./Float_t(fNpart); |
230 | // |
231 | // Forward Paramters to the AliPythia object |
232 | fDecayer->SetForceDecay(fForceDecay); |
233 | fDecayer->Init(); |
234 | |
235 | |
236 | fPythia->SetCKIN(3,fPtHardMin); |
237 | fPythia->SetCKIN(4,fPtHardMax); |
238 | fPythia->SetCKIN(7,fYHardMin); |
239 | fPythia->SetCKIN(8,fYHardMax); |
240 | |
1a626d4e |
241 | if (fAProjectile > 0 && fATarget > 0) fPythia->SetNuclei(fAProjectile, fATarget); |
8d2cd130 |
242 | // Fragmentation? |
243 | if (fFragmentation) { |
244 | fPythia->SetMSTP(111,1); |
245 | } else { |
246 | fPythia->SetMSTP(111,0); |
247 | } |
248 | |
249 | |
250 | // initial state radiation |
251 | fPythia->SetMSTP(61,fGinit); |
252 | // final state radiation |
253 | fPythia->SetMSTP(71,fGfinal); |
254 | // pt - kick |
255 | if (fPtKick > 0.) { |
256 | fPythia->SetMSTP(91,1); |
257 | fPythia->SetPARP(91,fPtKick); |
258 | } else { |
259 | fPythia->SetMSTP(91,0); |
260 | } |
261 | |
5fa4b20b |
262 | |
263 | if (fReadFromFile) { |
264 | fRL = AliRunLoader::Open(fFileName, "Partons"); |
265 | fRL->LoadKinematics(); |
266 | fRL->LoadHeader(); |
267 | } else { |
268 | fRL = 0x0; |
269 | } |
beac474c |
270 | // Switch off Heavy Flavors on request |
271 | if (fHFoff) { |
272 | fPythia->SetMSTP(58, 3); |
273 | fPythia->SetMSTJ(45, 3); |
274 | for (Int_t i = 156; i <= 160; i++) fPythia->SetMDME(i, 1, 0); |
275 | } |
8d2cd130 |
276 | // |
277 | fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc); |
278 | |
279 | // Parent and Children Selection |
280 | switch (fProcess) |
281 | { |
65f2626c |
282 | case kPyOldUEQ2ordered: |
283 | case kPyOldUEQ2ordered2: |
284 | case kPyOldPopcorn: |
285 | break; |
8d2cd130 |
286 | case kPyCharm: |
287 | case kPyCharmUnforced: |
adf4d898 |
288 | case kPyCharmPbPbMNR: |
aabc7187 |
289 | case kPyCharmppMNR: |
290 | case kPyCharmpPbMNR: |
8d2cd130 |
291 | fParentSelect[0] = 411; |
292 | fParentSelect[1] = 421; |
293 | fParentSelect[2] = 431; |
294 | fParentSelect[3] = 4122; |
295 | fFlavorSelect = 4; |
296 | break; |
adf4d898 |
297 | case kPyD0PbPbMNR: |
298 | case kPyD0pPbMNR: |
299 | case kPyD0ppMNR: |
8d2cd130 |
300 | fParentSelect[0] = 421; |
301 | fFlavorSelect = 4; |
302 | break; |
90d7b703 |
303 | case kPyDPlusPbPbMNR: |
304 | case kPyDPluspPbMNR: |
305 | case kPyDPlusppMNR: |
306 | fParentSelect[0] = 411; |
307 | fFlavorSelect = 4; |
308 | break; |
8d2cd130 |
309 | case kPyBeauty: |
adf4d898 |
310 | case kPyBeautyPbPbMNR: |
311 | case kPyBeautypPbMNR: |
312 | case kPyBeautyppMNR: |
8d2cd130 |
313 | fParentSelect[0]= 511; |
314 | fParentSelect[1]= 521; |
315 | fParentSelect[2]= 531; |
316 | fParentSelect[3]= 5122; |
317 | fParentSelect[4]= 5132; |
318 | fParentSelect[5]= 5232; |
319 | fParentSelect[6]= 5332; |
320 | fFlavorSelect = 5; |
321 | break; |
322 | case kPyBeautyUnforced: |
323 | fParentSelect[0] = 511; |
324 | fParentSelect[1] = 521; |
325 | fParentSelect[2] = 531; |
326 | fParentSelect[3] = 5122; |
327 | fParentSelect[4] = 5132; |
328 | fParentSelect[5] = 5232; |
329 | fParentSelect[6] = 5332; |
330 | fFlavorSelect = 5; |
331 | break; |
332 | case kPyJpsiChi: |
333 | case kPyJpsi: |
334 | fParentSelect[0] = 443; |
335 | break; |
336 | case kPyMb: |
337 | case kPyMbNonDiffr: |
338 | case kPyJets: |
339 | case kPyDirectGamma: |
340 | break; |
589380c6 |
341 | case kPyW: |
0f6ee828 |
342 | case kPyZ: |
589380c6 |
343 | break; |
8d2cd130 |
344 | } |
345 | // |
592f8307 |
346 | // |
347 | // JetFinder for Trigger |
348 | // |
349 | // Configure detector (EMCAL like) |
350 | // |
351 | fPythia->SetPARU(51, fPycellEtaMax); |
352 | fPythia->SetMSTU(51, fPycellNEta); |
353 | fPythia->SetMSTU(52, fPycellNPhi); |
354 | // |
355 | // Configure Jet Finder |
356 | // |
357 | fPythia->SetPARU(58, fPycellThreshold); |
358 | fPythia->SetPARU(52, fPycellEtSeed); |
359 | fPythia->SetPARU(53, fPycellMinEtJet); |
360 | fPythia->SetPARU(54, fPycellMaxRadius); |
361 | fPythia->SetMSTU(54, 2); |
362 | // |
8d2cd130 |
363 | // This counts the total number of calls to Pyevnt() per run. |
364 | fTrialsRun = 0; |
365 | fQ = 0.; |
366 | fX1 = 0.; |
367 | fX2 = 0.; |
368 | fNev = 0 ; |
369 | // |
1d568bc2 |
370 | // |
371 | // |
8d2cd130 |
372 | AliGenMC::Init(); |
1d568bc2 |
373 | // |
374 | // |
375 | // |
376 | if (fSetNuclei) { |
377 | fDyBoost = 0; |
378 | Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n"); |
379 | } |
32d6ef7d |
380 | |
381 | if (fQuench) { |
5fa4b20b |
382 | fPythia->InitQuenching(0., 0.1, 0.6e6, 0); |
32d6ef7d |
383 | } |
384 | |
8d2cd130 |
385 | } |
386 | |
387 | void AliGenPythia::Generate() |
388 | { |
389 | // Generate one event |
e5c87a3d |
390 | |
8d2cd130 |
391 | fDecayer->ForceDecay(); |
392 | |
393 | Float_t polar[3] = {0,0,0}; |
394 | Float_t origin[3] = {0,0,0}; |
a920faf9 |
395 | Float_t p[4]; |
8d2cd130 |
396 | // converts from mm/c to s |
397 | const Float_t kconv=0.001/2.999792458e8; |
398 | // |
399 | Int_t nt=0; |
400 | Int_t jev=0; |
401 | Int_t j, kf; |
402 | fTrials=0; |
f913ec4f |
403 | fEventTime = 0.; |
404 | |
2590ccf9 |
405 | |
8d2cd130 |
406 | |
407 | // Set collision vertex position |
2590ccf9 |
408 | if (fVertexSmear == kPerEvent) Vertex(); |
409 | |
8d2cd130 |
410 | // event loop |
411 | while(1) |
412 | { |
32d6ef7d |
413 | // |
5fa4b20b |
414 | // Produce event |
32d6ef7d |
415 | // |
32d6ef7d |
416 | // |
5fa4b20b |
417 | // Switch hadronisation off |
418 | // |
419 | fPythia->SetMSTJ(1, 0); |
32d6ef7d |
420 | // |
5fa4b20b |
421 | // Either produce new event or read partons from file |
422 | // |
423 | if (!fReadFromFile) { |
beac474c |
424 | if (!fNewMIS) { |
425 | fPythia->Pyevnt(); |
426 | } else { |
427 | fPythia->Pyevnw(); |
428 | } |
5fa4b20b |
429 | fNpartons = fPythia->GetN(); |
430 | } else { |
431 | printf("Loading Event %d\n",AliRunLoader::GetRunLoader()->GetEventNumber()); |
432 | fRL->GetEvent(AliRunLoader::GetRunLoader()->GetEventNumber()); |
433 | fPythia->SetN(0); |
434 | LoadEvent(fRL->Stack(), 0 , 1); |
435 | fPythia->Pyedit(21); |
436 | } |
437 | |
32d6ef7d |
438 | // |
439 | // Run quenching routine |
440 | // |
5fa4b20b |
441 | if (fQuench == 1) { |
442 | fPythia->Quench(); |
443 | } else if (fQuench == 2){ |
444 | fPythia->Pyquen(208., 0, 0.); |
445 | } |
32d6ef7d |
446 | // |
5fa4b20b |
447 | // Switch hadronisation on |
32d6ef7d |
448 | // |
aea21c57 |
449 | fPythia->SetMSTJ(1, 1); |
5fa4b20b |
450 | // |
451 | // .. and perform hadronisation |
aea21c57 |
452 | // printf("Calling hadronisation %d\n", fPythia->GetN()); |
5fa4b20b |
453 | fPythia->Pyexec(); |
8d2cd130 |
454 | fTrials++; |
8d2cd130 |
455 | fPythia->ImportParticles(fParticles,"All"); |
1d568bc2 |
456 | Boost(); |
8d2cd130 |
457 | // |
458 | // |
459 | // |
460 | Int_t i; |
461 | |
5fa4b20b |
462 | |
8d2cd130 |
463 | Int_t np = fParticles->GetEntriesFast(); |
5fa4b20b |
464 | |
7c21f297 |
465 | if (np == 0) continue; |
8d2cd130 |
466 | // |
2590ccf9 |
467 | |
8d2cd130 |
468 | // |
469 | Int_t* pParent = new Int_t[np]; |
470 | Int_t* pSelected = new Int_t[np]; |
471 | Int_t* trackIt = new Int_t[np]; |
5fa4b20b |
472 | for (i = 0; i < np; i++) { |
8d2cd130 |
473 | pParent[i] = -1; |
474 | pSelected[i] = 0; |
475 | trackIt[i] = 0; |
476 | } |
477 | |
478 | Int_t nc = 0; // Total n. of selected particles |
479 | Int_t nParents = 0; // Selected parents |
480 | Int_t nTkbles = 0; // Trackable particles |
481 | if (fProcess != kPyMb && fProcess != kPyJets && |
482 | fProcess != kPyDirectGamma && |
589380c6 |
483 | fProcess != kPyMbNonDiffr && |
0f6ee828 |
484 | fProcess != kPyW && fProcess != kPyZ ) { |
8d2cd130 |
485 | |
5fa4b20b |
486 | for (i = 0; i < np; i++) { |
2590ccf9 |
487 | TParticle* iparticle = (TParticle *) fParticles->At(i); |
8d2cd130 |
488 | Int_t ks = iparticle->GetStatusCode(); |
489 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
490 | // No initial state partons |
491 | if (ks==21) continue; |
492 | // |
493 | // Heavy Flavor Selection |
494 | // |
495 | // quark ? |
496 | kf = TMath::Abs(kf); |
497 | Int_t kfl = kf; |
9ff6c04c |
498 | // Resonance |
f913ec4f |
499 | |
9ff6c04c |
500 | if (kfl > 100000) kfl %= 100000; |
183a5ca9 |
501 | if (kfl > 10000) kfl %= 10000; |
8d2cd130 |
502 | // meson ? |
503 | if (kfl > 10) kfl/=100; |
504 | // baryon |
505 | if (kfl > 10) kfl/=10; |
8d2cd130 |
506 | Int_t ipa = iparticle->GetFirstMother()-1; |
507 | Int_t kfMo = 0; |
f913ec4f |
508 | // |
509 | // Establish mother daughter relation between heavy quarks and mesons |
510 | // |
511 | if (kf >= fFlavorSelect && kf <= 6) { |
512 | Int_t idau = iparticle->GetFirstDaughter() - 1; |
513 | if (idau > -1) { |
514 | TParticle* daughter = (TParticle *) fParticles->At(idau); |
515 | Int_t pdgD = daughter->GetPdgCode(); |
516 | if (pdgD == 91 || pdgD == 92) { |
517 | Int_t jmin = daughter->GetFirstDaughter() - 1; |
518 | Int_t jmax = daughter->GetLastDaughter() - 1; |
519 | for (Int_t j = jmin; j <= jmax; j++) |
520 | ((TParticle *) fParticles->At(j))->SetFirstMother(i+1); |
521 | } // is string or cluster |
522 | } // has daughter |
523 | } // heavy quark |
8d2cd130 |
524 | |
f913ec4f |
525 | |
8d2cd130 |
526 | if (ipa > -1) { |
527 | TParticle * mother = (TParticle *) fParticles->At(ipa); |
528 | kfMo = TMath::Abs(mother->GetPdgCode()); |
529 | } |
f913ec4f |
530 | |
8d2cd130 |
531 | // What to keep in Stack? |
532 | Bool_t flavorOK = kFALSE; |
533 | Bool_t selectOK = kFALSE; |
534 | if (fFeedDownOpt) { |
32d6ef7d |
535 | if (kfl >= fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 |
536 | } else { |
32d6ef7d |
537 | if (kfl > fFlavorSelect) { |
538 | nc = -1; |
539 | break; |
540 | } |
541 | if (kfl == fFlavorSelect) flavorOK = kTRUE; |
8d2cd130 |
542 | } |
543 | switch (fStackFillOpt) { |
544 | case kFlavorSelection: |
32d6ef7d |
545 | selectOK = kTRUE; |
546 | break; |
8d2cd130 |
547 | case kParentSelection: |
32d6ef7d |
548 | if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE; |
549 | break; |
8d2cd130 |
550 | } |
551 | if (flavorOK && selectOK) { |
552 | // |
553 | // Heavy flavor hadron or quark |
554 | // |
555 | // Kinematic seletion on final state heavy flavor mesons |
556 | if (ParentSelected(kf) && !KinematicSelection(iparticle, 0)) |
557 | { |
9ff6c04c |
558 | continue; |
8d2cd130 |
559 | } |
560 | pSelected[i] = 1; |
561 | if (ParentSelected(kf)) ++nParents; // Update parent count |
562 | // printf("\n particle (HF) %d %d %d", i, pSelected[i], kf); |
563 | } else { |
564 | // Kinematic seletion on decay products |
565 | if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf) |
9ff6c04c |
566 | && !KinematicSelection(iparticle, 1)) |
8d2cd130 |
567 | { |
9ff6c04c |
568 | continue; |
8d2cd130 |
569 | } |
570 | // |
571 | // Decay products |
572 | // Select if mother was selected and is not tracked |
573 | |
574 | if (pSelected[ipa] && |
575 | !trackIt[ipa] && // mother will be tracked ? |
576 | kfMo != 5 && // mother is b-quark, don't store fragments |
577 | kfMo != 4 && // mother is c-quark, don't store fragments |
578 | kf != 92) // don't store string |
579 | { |
580 | // |
581 | // Semi-stable or de-selected: diselect decay products: |
582 | // |
583 | // |
584 | if (pSelected[i] == -1 || fDecayer->GetLifetime(kf) > fMaxLifeTime) |
585 | { |
586 | Int_t ipF = iparticle->GetFirstDaughter(); |
587 | Int_t ipL = iparticle->GetLastDaughter(); |
588 | if (ipF > 0) for (j = ipF-1; j < ipL; j++) pSelected[j] = -1; |
589 | } |
590 | // printf("\n particle (decay) %d %d %d", i, pSelected[i], kf); |
591 | pSelected[i] = (pSelected[i] == -1) ? 0 : 1; |
592 | } |
593 | } |
594 | if (pSelected[i] == -1) pSelected[i] = 0; |
595 | if (!pSelected[i]) continue; |
596 | // Count quarks only if you did not include fragmentation |
597 | if (fFragmentation && kf <= 10) continue; |
9ff6c04c |
598 | |
8d2cd130 |
599 | nc++; |
600 | // Decision on tracking |
601 | trackIt[i] = 0; |
602 | // |
603 | // Track final state particle |
604 | if (ks == 1) trackIt[i] = 1; |
605 | // Track semi-stable particles |
d25cfd65 |
606 | if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1; |
8d2cd130 |
607 | // Track particles selected by process if undecayed. |
608 | if (fForceDecay == kNoDecay) { |
609 | if (ParentSelected(kf)) trackIt[i] = 1; |
610 | } else { |
611 | if (ParentSelected(kf)) trackIt[i] = 0; |
612 | } |
613 | if (trackIt[i] == 1) ++nTkbles; // Update trackable counter |
614 | // |
615 | // |
616 | |
617 | } // particle selection loop |
618 | if (nc > 0) { |
619 | for (i = 0; i<np; i++) { |
620 | if (!pSelected[i]) continue; |
621 | TParticle * iparticle = (TParticle *) fParticles->At(i); |
622 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
623 | Int_t ks = iparticle->GetStatusCode(); |
624 | p[0] = iparticle->Px(); |
625 | p[1] = iparticle->Py(); |
626 | p[2] = iparticle->Pz(); |
a920faf9 |
627 | p[3] = iparticle->Energy(); |
628 | |
2590ccf9 |
629 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
630 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] |
631 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] |
632 | |
8d2cd130 |
633 | Float_t tof = kconv*iparticle->T(); |
634 | Int_t ipa = iparticle->GetFirstMother()-1; |
635 | Int_t iparent = (ipa > -1) ? pParent[ipa] : -1; |
a920faf9 |
636 | |
637 | PushTrack(fTrackIt*trackIt[i], iparent, kf, |
638 | p[0], p[1], p[2], p[3], |
639 | origin[0], origin[1], origin[2], tof, |
640 | polar[0], polar[1], polar[2], |
641 | kPPrimary, nt, 1., ks); |
8d2cd130 |
642 | pParent[i] = nt; |
643 | KeepTrack(nt); |
642f15cf |
644 | } // PushTrack loop |
8d2cd130 |
645 | } |
646 | } else { |
647 | nc = GenerateMB(); |
648 | } // mb ? |
f913ec4f |
649 | |
650 | GetSubEventTime(); |
8d2cd130 |
651 | |
652 | if (pParent) delete[] pParent; |
653 | if (pSelected) delete[] pSelected; |
654 | if (trackIt) delete[] trackIt; |
655 | |
656 | if (nc > 0) { |
657 | switch (fCountMode) { |
658 | case kCountAll: |
659 | // printf(" Count all \n"); |
660 | jev += nc; |
661 | break; |
662 | case kCountParents: |
663 | // printf(" Count parents \n"); |
664 | jev += nParents; |
665 | break; |
666 | case kCountTrackables: |
667 | // printf(" Count trackable \n"); |
668 | jev += nTkbles; |
669 | break; |
670 | } |
671 | if (jev >= fNpart || fNpart == -1) { |
672 | fKineBias=Float_t(fNpart)/Float_t(fTrials); |
8d2cd130 |
673 | fQ += fPythia->GetVINT(51); |
674 | fX1 += fPythia->GetVINT(41); |
675 | fX2 += fPythia->GetVINT(42); |
676 | fTrialsRun += fTrials; |
677 | fNev++; |
678 | MakeHeader(); |
679 | break; |
680 | } |
681 | } |
682 | } // event loop |
683 | SetHighWaterMark(nt); |
684 | // adjust weight due to kinematic selection |
b88f5cea |
685 | // AdjustWeights(); |
8d2cd130 |
686 | // get cross-section |
687 | fXsection=fPythia->GetPARI(1); |
688 | } |
689 | |
690 | Int_t AliGenPythia::GenerateMB() |
691 | { |
692 | // |
693 | // Min Bias selection and other global selections |
694 | // |
695 | Int_t i, kf, nt, iparent; |
696 | Int_t nc = 0; |
bf950da8 |
697 | Float_t p[4]; |
8d2cd130 |
698 | Float_t polar[3] = {0,0,0}; |
699 | Float_t origin[3] = {0,0,0}; |
700 | // converts from mm/c to s |
701 | const Float_t kconv=0.001/2.999792458e8; |
702 | |
5fa4b20b |
703 | Int_t np = (fHadronisation) ? fParticles->GetEntriesFast() : fNpartons; |
aea21c57 |
704 | |
5fa4b20b |
705 | |
8d2cd130 |
706 | Int_t* pParent = new Int_t[np]; |
707 | for (i=0; i< np; i++) pParent[i] = -1; |
708 | if (fProcess == kPyJets || fProcess == kPyDirectGamma) { |
709 | TParticle* jet1 = (TParticle *) fParticles->At(6); |
710 | TParticle* jet2 = (TParticle *) fParticles->At(7); |
aea21c57 |
711 | if (!CheckTrigger(jet1, jet2)) return 0; |
8d2cd130 |
712 | } |
713 | |
7ce1321b |
714 | if (fTriggerParticle) { |
715 | Bool_t triggered = kFALSE; |
716 | for (i = 0; i < np; i++) { |
717 | TParticle * iparticle = (TParticle *) fParticles->At(i); |
718 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
719 | if (TMath::Abs(kf) != fTriggerParticle) continue; |
720 | if (iparticle->Pt() == 0.) continue; |
721 | if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue; |
722 | triggered = kTRUE; |
723 | break; |
724 | } |
725 | if (!triggered) return 0; |
726 | } |
727 | |
aea21c57 |
728 | |
0f6ee828 |
729 | //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff |
730 | if ( (fProcess == kPyW || fProcess == kPyZ || fProcess == kPyMb || fProcess == kPyMbNonDiffr) |
731 | && (fCutOnChild == 1) ) { |
732 | if ( !CheckKinematicsOnChild() ) { |
733 | if (pParent) delete[] pParent; |
734 | return 0; |
735 | } |
aea21c57 |
736 | } |
737 | |
738 | |
7ce1321b |
739 | |
f913ec4f |
740 | for (i = 0; i < np; i++) { |
8d2cd130 |
741 | Int_t trackIt = 0; |
742 | TParticle * iparticle = (TParticle *) fParticles->At(i); |
743 | kf = CheckPDGCode(iparticle->GetPdgCode()); |
744 | Int_t ks = iparticle->GetStatusCode(); |
745 | Int_t km = iparticle->GetFirstMother(); |
746 | if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) || |
747 | (ks != 1) || |
748 | (fProcess == kPyJets && ks == 21 && km == 0 && i>1)) { |
749 | nc++; |
750 | if (ks == 1) trackIt = 1; |
751 | Int_t ipa = iparticle->GetFirstMother()-1; |
752 | |
753 | iparent = (ipa > -1) ? pParent[ipa] : -1; |
754 | |
755 | // |
756 | // store track information |
757 | p[0] = iparticle->Px(); |
758 | p[1] = iparticle->Py(); |
759 | p[2] = iparticle->Pz(); |
a920faf9 |
760 | p[3] = iparticle->Energy(); |
1406f599 |
761 | |
a920faf9 |
762 | |
2590ccf9 |
763 | origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm] |
764 | origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm] |
765 | origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm] |
766 | |
f913ec4f |
767 | Float_t tof = fEventTime + kconv * iparticle->T(); |
a920faf9 |
768 | |
769 | PushTrack(fTrackIt*trackIt, iparent, kf, |
770 | p[0], p[1], p[2], p[3], |
771 | origin[0], origin[1], origin[2], tof, |
772 | polar[0], polar[1], polar[2], |
773 | kPPrimary, nt, 1., ks); |
5fa4b20b |
774 | // |
775 | // Special Treatment to store color-flow |
776 | // |
777 | if (ks == 3 || ks == 13 || ks == 14) { |
778 | TParticle* particle = 0; |
779 | if (fStack) { |
780 | particle = fStack->Particle(nt); |
781 | } else { |
782 | particle = gAlice->Stack()->Particle(nt); |
783 | } |
784 | particle->SetFirstDaughter(fPythia->GetK(2, i)); |
785 | particle->SetLastDaughter(fPythia->GetK(3, i)); |
786 | } |
787 | |
8d2cd130 |
788 | KeepTrack(nt); |
789 | pParent[i] = nt; |
f913ec4f |
790 | SetHighWaterMark(nt); |
791 | |
8d2cd130 |
792 | } // select particle |
793 | } // particle loop |
794 | |
795 | if (pParent) delete[] pParent; |
f913ec4f |
796 | return 1; |
8d2cd130 |
797 | } |
798 | |
799 | |
800 | void AliGenPythia::FinishRun() |
801 | { |
802 | // Print x-section summary |
803 | fPythia->Pystat(1); |
2779fc64 |
804 | |
805 | if (fNev > 0.) { |
806 | fQ /= fNev; |
807 | fX1 /= fNev; |
808 | fX2 /= fNev; |
809 | } |
810 | |
8d2cd130 |
811 | printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun); |
812 | printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2); |
8d2cd130 |
813 | } |
814 | |
815 | void AliGenPythia::AdjustWeights() |
816 | { |
817 | // Adjust the weights after generation of all events |
818 | // |
e2bddf81 |
819 | if (gAlice) { |
820 | TParticle *part; |
821 | Int_t ntrack=gAlice->GetMCApp()->GetNtrack(); |
822 | for (Int_t i=0; i<ntrack; i++) { |
823 | part= gAlice->GetMCApp()->Particle(i); |
824 | part->SetWeight(part->GetWeight()*fKineBias); |
825 | } |
8d2cd130 |
826 | } |
827 | } |
828 | |
829 | void AliGenPythia::SetNuclei(Int_t a1, Int_t a2) |
830 | { |
831 | // Treat protons as inside nuclei with mass numbers a1 and a2 |
1d568bc2 |
832 | |
1a626d4e |
833 | fAProjectile = a1; |
834 | fATarget = a2; |
1d568bc2 |
835 | fSetNuclei = kTRUE; |
8d2cd130 |
836 | } |
837 | |
838 | |
839 | void AliGenPythia::MakeHeader() |
840 | { |
183a5ca9 |
841 | if (gAlice) { |
842 | if (gAlice->GetEvNumber()>=fDebugEventFirst && |
f913ec4f |
843 | gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2); |
183a5ca9 |
844 | } |
845 | |
8d2cd130 |
846 | // Builds the event header, to be called after each event |
e5c87a3d |
847 | if (fHeader) delete fHeader; |
848 | fHeader = new AliGenPythiaEventHeader("Pythia"); |
8d2cd130 |
849 | // |
850 | // Event type |
e5c87a3d |
851 | ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1)); |
8d2cd130 |
852 | // |
853 | // Number of trials |
e5c87a3d |
854 | ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials); |
8d2cd130 |
855 | // |
856 | // Event Vertex |
d25cfd65 |
857 | fHeader->SetPrimaryVertex(fVertex); |
8d2cd130 |
858 | // |
859 | // Jets that have triggered |
f913ec4f |
860 | |
8d2cd130 |
861 | if (fProcess == kPyJets) |
862 | { |
863 | Int_t ntrig, njet; |
864 | Float_t jets[4][10]; |
865 | GetJets(njet, ntrig, jets); |
9ff6c04c |
866 | |
8d2cd130 |
867 | |
868 | for (Int_t i = 0; i < ntrig; i++) { |
e5c87a3d |
869 | ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i], |
8d2cd130 |
870 | jets[3][i]); |
871 | } |
872 | } |
5fa4b20b |
873 | // |
874 | // Copy relevant information from external header, if present. |
875 | // |
876 | Float_t uqJet[4]; |
877 | |
878 | if (fRL) { |
879 | AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader()); |
880 | for (Int_t i = 0; i < exHeader->NTriggerJets(); i++) |
881 | { |
882 | printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets()); |
883 | |
884 | |
885 | exHeader->TriggerJet(i, uqJet); |
886 | ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]); |
887 | } |
888 | } |
889 | // |
890 | // Store quenching parameters |
891 | // |
892 | if (fQuench){ |
893 | Double_t z[4]; |
894 | Double_t xp, yp; |
7c21f297 |
895 | if (fQuench == 1) { |
896 | // Pythia::Quench() |
897 | fPythia->GetQuenchingParameters(xp, yp, z); |
898 | } else { |
899 | // Pyquen |
900 | Double_t r1 = PARIMP.rb1; |
901 | Double_t r2 = PARIMP.rb2; |
902 | Double_t b = PARIMP.b1; |
903 | Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b); |
904 | Double_t phi = PARIMP.psib1; |
905 | xp = r * TMath::Cos(phi); |
906 | yp = r * TMath::Sin(phi); |
907 | |
908 | } |
909 | ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp); |
910 | ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z); |
911 | } |
beac474c |
912 | // |
913 | // Store pt^hard |
914 | ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47)); |
5fa4b20b |
915 | // |
cf57b268 |
916 | // Pass header |
5fa4b20b |
917 | // |
cf57b268 |
918 | AddHeader(fHeader); |
8d2cd130 |
919 | } |
cf57b268 |
920 | |
921 | void AliGenPythia::AddHeader(AliGenEventHeader* header) |
922 | { |
923 | // Add header to container or runloader |
924 | if (fContainer) { |
925 | fContainer->AddHeader(header); |
926 | } else { |
927 | AliRunLoader::GetRunLoader()->GetHeader()->SetGenEventHeader(header); |
928 | } |
929 | } |
930 | |
8d2cd130 |
931 | |
932 | Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2) |
933 | { |
934 | // Check the kinematic trigger condition |
935 | // |
936 | Double_t eta[2]; |
937 | eta[0] = jet1->Eta(); |
938 | eta[1] = jet2->Eta(); |
939 | Double_t phi[2]; |
940 | phi[0] = jet1->Phi(); |
941 | phi[1] = jet2->Phi(); |
942 | Int_t pdg[2]; |
943 | pdg[0] = jet1->GetPdgCode(); |
944 | pdg[1] = jet2->GetPdgCode(); |
945 | Bool_t triggered = kFALSE; |
946 | |
947 | if (fProcess == kPyJets) { |
948 | Int_t njets = 0; |
949 | Int_t ntrig = 0; |
950 | Float_t jets[4][10]; |
951 | // |
952 | // Use Pythia clustering on parton level to determine jet axis |
953 | // |
954 | GetJets(njets, ntrig, jets); |
955 | |
956 | if (ntrig) triggered = kTRUE; |
957 | // |
958 | } else { |
959 | Int_t ij = 0; |
960 | Int_t ig = 1; |
961 | if (pdg[0] == kGamma) { |
962 | ij = 1; |
963 | ig = 0; |
964 | } |
965 | //Check eta range first... |
966 | if ((eta[ij] < fEtaMaxJet && eta[ij] > fEtaMinJet) && |
967 | (eta[ig] < fEtaMaxGamma && eta[ig] > fEtaMinGamma)) |
968 | { |
969 | //Eta is okay, now check phi range |
970 | if ((phi[ij] < fPhiMaxJet && phi[ij] > fPhiMinJet) && |
971 | (phi[ig] < fPhiMaxGamma && phi[ig] > fPhiMinGamma)) |
972 | { |
973 | triggered = kTRUE; |
974 | } |
975 | } |
976 | } |
977 | return triggered; |
978 | } |
aea21c57 |
979 | |
980 | |
981 | //Checking Kinematics on Child (status code 1, particle code ?, kin cuts |
982 | Bool_t AliGenPythia::CheckKinematicsOnChild(){ |
983 | |
984 | Bool_t checking = kFALSE; |
985 | Int_t j, kcode, ks, km; |
986 | Int_t nPartAcc = 0; //number of particles in the acceptance range |
987 | Int_t numberOfAcceptedParticles = 1; |
988 | if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; } |
989 | Int_t npart = fParticles->GetEntriesFast(); |
990 | |
0f6ee828 |
991 | for (j = 0; j<npart; j++) { |
aea21c57 |
992 | TParticle * jparticle = (TParticle *) fParticles->At(j); |
993 | kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) ); |
994 | ks = jparticle->GetStatusCode(); |
995 | km = jparticle->GetFirstMother(); |
996 | |
997 | if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){ |
998 | nPartAcc++; |
999 | } |
0f6ee828 |
1000 | if( numberOfAcceptedParticles <= nPartAcc){ |
1001 | checking = kTRUE; |
1002 | break; |
1003 | } |
aea21c57 |
1004 | } |
0f6ee828 |
1005 | |
aea21c57 |
1006 | return checking; |
aea21c57 |
1007 | } |
1008 | |
8d2cd130 |
1009 | |
1010 | AliGenPythia& AliGenPythia::operator=(const AliGenPythia& rhs) |
1011 | { |
1012 | // Assignment operator |
014a9521 |
1013 | rhs.Copy(*this); |
8d2cd130 |
1014 | return *this; |
1015 | } |
1016 | |
5fa4b20b |
1017 | void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr) |
8d2cd130 |
1018 | { |
1019 | // |
1020 | // Load event into Pythia Common Block |
1021 | // |
5fa4b20b |
1022 | |
32d6ef7d |
1023 | Int_t npart = stack -> GetNprimary(); |
1024 | Int_t n0 = 0; |
1025 | |
1026 | if (!flag) { |
1027 | (fPythia->GetPyjets())->N = npart; |
1028 | } else { |
1029 | n0 = (fPythia->GetPyjets())->N; |
1030 | (fPythia->GetPyjets())->N = n0 + npart; |
1031 | } |
1032 | |
1033 | |
8d2cd130 |
1034 | for (Int_t part = 0; part < npart; part++) { |
32d6ef7d |
1035 | TParticle *MPart = stack->Particle(part); |
1036 | |
5fa4b20b |
1037 | Int_t kf = MPart->GetPdgCode(); |
1038 | Int_t ks = MPart->GetStatusCode(); |
1039 | Int_t idf = MPart->GetFirstDaughter(); |
1040 | Int_t idl = MPart->GetLastDaughter(); |
1041 | |
1042 | if (reHadr) { |
1043 | if (ks == 11 || ks == 12) { |
1044 | ks -= 10; |
1045 | idf = -1; |
1046 | idl = -1; |
1047 | } |
1048 | } |
32d6ef7d |
1049 | |
8d2cd130 |
1050 | Float_t px = MPart->Px(); |
1051 | Float_t py = MPart->Py(); |
1052 | Float_t pz = MPart->Pz(); |
1053 | Float_t e = MPart->Energy(); |
a920faf9 |
1054 | Float_t m = MPart->GetCalcMass(); |
8d2cd130 |
1055 | |
1056 | |
32d6ef7d |
1057 | (fPythia->GetPyjets())->P[0][part+n0] = px; |
1058 | (fPythia->GetPyjets())->P[1][part+n0] = py; |
1059 | (fPythia->GetPyjets())->P[2][part+n0] = pz; |
1060 | (fPythia->GetPyjets())->P[3][part+n0] = e; |
1061 | (fPythia->GetPyjets())->P[4][part+n0] = m; |
8d2cd130 |
1062 | |
32d6ef7d |
1063 | (fPythia->GetPyjets())->K[1][part+n0] = kf; |
1064 | (fPythia->GetPyjets())->K[0][part+n0] = ks; |
5fa4b20b |
1065 | (fPythia->GetPyjets())->K[3][part+n0] = idf + 1; |
1066 | (fPythia->GetPyjets())->K[4][part+n0] = idl + 1; |
1067 | (fPythia->GetPyjets())->K[2][part+n0] = MPart->GetFirstMother() + 1; |
8d2cd130 |
1068 | } |
1069 | } |
1070 | |
5fa4b20b |
1071 | |
014a9521 |
1072 | void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50]) |
8d2cd130 |
1073 | { |
1074 | // |
1075 | // Calls the Pythia jet finding algorithm to find jets in the current event |
1076 | // |
1077 | // |
8d2cd130 |
1078 | // |
1079 | // Save jets |
1080 | Int_t n = fPythia->GetN(); |
1081 | |
1082 | // |
1083 | // Run Jet Finder |
1084 | fPythia->Pycell(njets); |
1085 | Int_t i; |
1086 | for (i = 0; i < njets; i++) { |
1087 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; |
1088 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; |
1089 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; |
1090 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; |
1091 | |
1092 | jets[0][i] = px; |
1093 | jets[1][i] = py; |
1094 | jets[2][i] = pz; |
1095 | jets[3][i] = e; |
1096 | } |
1097 | } |
1098 | |
1099 | |
1100 | |
1101 | void AliGenPythia::GetJets(Int_t& nJets, Int_t& nJetsTrig, Float_t jets[4][10]) |
1102 | { |
1103 | // |
1104 | // Calls the Pythia clustering algorithm to find jets in the current event |
1105 | // |
1106 | Int_t n = fPythia->GetN(); |
1107 | nJets = 0; |
1108 | nJetsTrig = 0; |
1109 | if (fJetReconstruction == kCluster) { |
1110 | // |
1111 | // Configure cluster algorithm |
1112 | // |
1113 | fPythia->SetPARU(43, 2.); |
1114 | fPythia->SetMSTU(41, 1); |
1115 | // |
1116 | // Call cluster algorithm |
1117 | // |
1118 | fPythia->Pyclus(nJets); |
1119 | // |
1120 | // Loading jets from common block |
1121 | // |
1122 | } else { |
592f8307 |
1123 | |
8d2cd130 |
1124 | // |
1125 | // Run Jet Finder |
1126 | fPythia->Pycell(nJets); |
1127 | } |
1128 | |
1129 | Int_t i; |
1130 | for (i = 0; i < nJets; i++) { |
1131 | Float_t px = (fPythia->GetPyjets())->P[0][n+i]; |
1132 | Float_t py = (fPythia->GetPyjets())->P[1][n+i]; |
1133 | Float_t pz = (fPythia->GetPyjets())->P[2][n+i]; |
1134 | Float_t e = (fPythia->GetPyjets())->P[3][n+i]; |
1135 | Float_t pt = TMath::Sqrt(px * px + py * py); |
a920faf9 |
1136 | Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px); |
8d2cd130 |
1137 | Float_t theta = TMath::ATan2(pt,pz); |
1138 | Float_t et = e * TMath::Sin(theta); |
1139 | Float_t eta = -TMath::Log(TMath::Tan(theta / 2.)); |
8d2cd130 |
1140 | if ( |
1141 | eta > fEtaMinJet && eta < fEtaMaxJet && |
675eb105 |
1142 | phi > fPhiMinJet && phi < fPhiMaxJet && |
8d2cd130 |
1143 | et > fEtMinJet && et < fEtMaxJet |
1144 | ) |
1145 | { |
1146 | jets[0][nJetsTrig] = px; |
1147 | jets[1][nJetsTrig] = py; |
1148 | jets[2][nJetsTrig] = pz; |
1149 | jets[3][nJetsTrig] = e; |
1150 | nJetsTrig++; |
5fa4b20b |
1151 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
8d2cd130 |
1152 | } else { |
1153 | // printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg); |
1154 | } |
1155 | } |
1156 | } |
1157 | |
f913ec4f |
1158 | void AliGenPythia::GetSubEventTime() |
1159 | { |
1160 | // Calculates time of the next subevent |
9d7108a7 |
1161 | fEventTime = 0.; |
1162 | if (fEventsTime) { |
1163 | TArrayF &array = *fEventsTime; |
1164 | fEventTime = array[fCurSubEvent++]; |
1165 | } |
1166 | // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime); |
1167 | return; |
f913ec4f |
1168 | } |
8d2cd130 |
1169 | |
1170 | #ifdef never |
1171 | void AliGenPythia::Streamer(TBuffer &R__b) |
1172 | { |
1173 | // Stream an object of class AliGenPythia. |
1174 | |
1175 | if (R__b.IsReading()) { |
1176 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } |
1177 | AliGenerator::Streamer(R__b); |
1178 | R__b >> (Int_t&)fProcess; |
1179 | R__b >> (Int_t&)fStrucFunc; |
1180 | R__b >> (Int_t&)fForceDecay; |
1181 | R__b >> fEnergyCMS; |
1182 | R__b >> fKineBias; |
1183 | R__b >> fTrials; |
1184 | fParentSelect.Streamer(R__b); |
1185 | fChildSelect.Streamer(R__b); |
1186 | R__b >> fXsection; |
1187 | // (AliPythia::Instance())->Streamer(R__b); |
1188 | R__b >> fPtHardMin; |
1189 | R__b >> fPtHardMax; |
1190 | // if (fDecayer) fDecayer->Streamer(R__b); |
1191 | } else { |
1192 | R__b.WriteVersion(AliGenPythia::IsA()); |
1193 | AliGenerator::Streamer(R__b); |
1194 | R__b << (Int_t)fProcess; |
1195 | R__b << (Int_t)fStrucFunc; |
1196 | R__b << (Int_t)fForceDecay; |
1197 | R__b << fEnergyCMS; |
1198 | R__b << fKineBias; |
1199 | R__b << fTrials; |
1200 | fParentSelect.Streamer(R__b); |
1201 | fChildSelect.Streamer(R__b); |
1202 | R__b << fXsection; |
1203 | // R__b << fPythia; |
1204 | R__b << fPtHardMin; |
1205 | R__b << fPtHardMax; |
1206 | // fDecayer->Streamer(R__b); |
1207 | } |
1208 | } |
1209 | #endif |
1210 | |
90d7b703 |
1211 | |
589380c6 |
1212 | |