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4c039060 | 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 | ||
16 | /* | |
17 | $Log$ | |
6d4dd317 | 18 | Revision 1.36 2002/02/08 16:50:50 morsch |
19 | Add name and title in constructor. | |
20 | ||
8b31bfac | 21 | Revision 1.35 2002/01/21 10:02:40 morsch |
22 | ty is Double_t | |
23 | Abort if too high rapidity causes numerical paroblem. User has to specify | |
24 | meaningful y-range. | |
25 | ||
2d7a47be | 26 | Revision 1.34 2001/11/27 13:13:07 morsch |
27 | Maximum lifetime for long-lived particles to be put on the stack is parameter. | |
28 | It can be set via SetMaximumLifetime(..). | |
29 | ||
47fc6bd5 | 30 | Revision 1.33 2001/10/21 18:35:56 hristov |
31 | Several pointers were set to zero in the default constructors to avoid memory management problems | |
32 | ||
2685bf00 | 33 | Revision 1.32 2001/07/27 17:09:36 morsch |
34 | Use local SetTrack, KeepTrack and SetHighWaterMark methods | |
35 | to delegate either to local stack or to stack owned by AliRun. | |
36 | (Piotr Skowronski, A.M.) | |
37 | ||
a99cf51f | 38 | Revision 1.31 2001/07/13 10:58:54 morsch |
39 | - Some coded moved to AliGenMC | |
40 | - Improved handling of secondary vertices. | |
41 | ||
fff02fee | 42 | Revision 1.30 2001/06/15 07:55:04 morsch |
43 | Put only first generation decay products on the stack. | |
44 | ||
6ba00c52 | 45 | Revision 1.29 2001/03/27 10:58:41 morsch |
46 | Initialize decayer before generation. Important if run inside cocktail. | |
47 | ||
771bbe45 | 48 | Revision 1.28 2001/03/09 13:01:41 morsch |
49 | - enum constants for paramterisation type (particle family) moved to AliGen*lib.h | |
50 | - use AliGenGSIlib::kUpsilon, AliGenPHOSlib::kEtaPrime to access the constants | |
51 | ||
34f60c01 | 52 | Revision 1.27 2001/02/02 15:21:10 morsch |
53 | Set high water mark after last particle. | |
54 | Use Vertex() method for Vertex. | |
55 | ||
d9ea0e3b | 56 | Revision 1.26 2000/12/21 16:24:06 morsch |
57 | Coding convention clean-up | |
58 | ||
675e9664 | 59 | Revision 1.25 2000/11/30 07:12:50 alibrary |
60 | Introducing new Rndm and QA classes | |
61 | ||
65fb704d | 62 | Revision 1.24 2000/10/18 19:11:27 hristov |
63 | Division by zero fixed | |
64 | ||
919c2096 | 65 | Revision 1.23 2000/10/02 21:28:06 fca |
66 | Removal of useless dependecies via forward declarations | |
67 | ||
94de3818 | 68 | Revision 1.22 2000/09/12 14:14:55 morsch |
69 | Call fDecayer->ForceDecay() at the beginning of Generate(). | |
70 | ||
00d6ce7d | 71 | Revision 1.21 2000/09/08 15:39:01 morsch |
72 | Handle the case fForceDecay=all during the generation, i.e. select all secondaries. | |
73 | ||
5ab0acc9 | 74 | Revision 1.20 2000/09/06 14:35:44 morsch |
75 | Use AliDecayerPythia for particle decays. | |
76 | ||
fa480368 | 77 | Revision 1.19 2000/07/11 18:24:56 fca |
78 | Coding convention corrections + few minor bug fixes | |
79 | ||
aee8290b | 80 | Revision 1.18 2000/06/29 21:08:27 morsch |
81 | All paramatrisation libraries derive from the pure virtual base class AliGenLib. | |
82 | This allows to pass a pointer to a library directly to AliGenParam and avoids the | |
83 | use of function pointers in Config.C. | |
84 | ||
b22ee262 | 85 | Revision 1.17 2000/06/09 20:33:30 morsch |
86 | All coding rule violations except RS3 corrected | |
87 | ||
f87cfe57 | 88 | Revision 1.16 2000/05/02 07:51:31 morsch |
89 | - Control precision of pT sampling TF1::SetNpx(..) | |
90 | - Correct initialisation of child-cuts in all constructors. | |
91 | - Most coding rule violations corrected. | |
92 | ||
749070b6 | 93 | Revision 1.15 2000/04/03 15:42:12 morsch |
94 | Cuts on primary particles are separated from those on the decay products. Methods | |
95 | SetChildMomentumRange, SetChildPtRange, SetChildPhiRange, SetChildThetaRange added. | |
96 | ||
cc5d764c | 97 | Revision 1.14 1999/11/09 07:38:48 fca |
98 | Changes for compatibility with version 2.23 of ROOT | |
99 | ||
084c1b4a | 100 | Revision 1.13 1999/11/04 11:30:31 fca |
101 | Correct the logics for SetForceDecay | |
102 | ||
28337bc1 | 103 | Revision 1.12 1999/11/03 17:43:20 fca |
104 | New version from G.Martinez & A.Morsch | |
105 | ||
886b6f73 | 106 | Revision 1.11 1999/09/29 09:24:14 fca |
107 | Introduction of the Copyright and cvs Log | |
108 | ||
4c039060 | 109 | */ |
110 | ||
6d4dd317 | 111 | |
112 | ||
113 | // Class to generate particles from using paramtrized pT and y distributions. | |
114 | // Distributions are obtained from pointer to object of type AliGenLib. | |
115 | // (For example AliGenMUONlib) | |
116 | // Decays are performed using Pythia. | |
117 | // andreas.morsch@cern.ch | |
118 | ||
fe4da5cc | 119 | #include "AliGenParam.h" |
fa480368 | 120 | #include "AliDecayerPythia.h" |
fe4da5cc | 121 | #include "AliGenMUONlib.h" |
122 | #include "AliRun.h" | |
1578254f | 123 | #include <TParticle.h> |
fa480368 | 124 | #include <TParticlePDG.h> |
125 | #include <TDatabasePDG.h> | |
126 | #include <TLorentzVector.h> | |
127 | ||
f87cfe57 | 128 | #include <TF1.h> |
fe4da5cc | 129 | |
130 | ClassImp(AliGenParam) | |
131 | ||
132 | //------------------------------------------------------------ | |
133 | ||
134 | //Begin_Html | |
135 | /* | |
1439f98e | 136 | <img src="picts/AliGenParam.gif"> |
fe4da5cc | 137 | */ |
138 | //End_Html | |
139 | ||
140 | //____________________________________________________________ | |
141 | //____________________________________________________________ | |
142 | AliGenParam::AliGenParam() | |
fe4da5cc | 143 | { |
b22ee262 | 144 | // Deafault constructor |
145 | fPtPara = 0; | |
146 | fYPara = 0; | |
34f60c01 | 147 | fParam = 0; |
148 | fAnalog = kAnalog; | |
b22ee262 | 149 | SetDeltaPt(); |
675e9664 | 150 | // |
151 | // Set random number generator | |
152 | sRandom = fRandom; | |
2685bf00 | 153 | fDecayer = 0; |
8b31bfac | 154 | |
155 | ||
b22ee262 | 156 | } |
157 | ||
fff02fee | 158 | AliGenParam::AliGenParam(Int_t npart, AliGenLib * Library, Int_t param, char* tname):AliGenMC(npart) |
b22ee262 | 159 | { |
160 | // Constructor using number of particles parameterisation id and library | |
8b31bfac | 161 | fName = "Param"; |
162 | fTitle= "Particle Generator using pT and y parameterisation"; | |
b22ee262 | 163 | |
164 | fPtParaFunc = Library->GetPt(param, tname); | |
165 | fYParaFunc = Library->GetY (param, tname); | |
166 | fIpParaFunc = Library->GetIp(param, tname); | |
167 | ||
168 | fPtPara = 0; | |
169 | fYPara = 0; | |
170 | fParam = param; | |
34f60c01 | 171 | fAnalog = kAnalog; |
b22ee262 | 172 | SetForceDecay(); |
b22ee262 | 173 | SetDeltaPt(); |
675e9664 | 174 | // |
175 | // Set random number generator | |
176 | sRandom = fRandom; | |
fe4da5cc | 177 | } |
178 | ||
179 | //____________________________________________________________ | |
886b6f73 | 180 | |
fff02fee | 181 | AliGenParam::AliGenParam(Int_t npart, Int_t param, char* tname):AliGenMC(npart) |
fe4da5cc | 182 | { |
b22ee262 | 183 | // Constructor using parameterisation id and number of particles |
8b31bfac | 184 | // |
185 | fName = "Param"; | |
186 | fTitle= "Particle Generator using pT and y parameterisation"; | |
187 | ||
675e9664 | 188 | AliGenLib* pLibrary = new AliGenMUONlib(); |
b22ee262 | 189 | |
675e9664 | 190 | fPtParaFunc = pLibrary->GetPt(param, tname); |
191 | fYParaFunc = pLibrary->GetY (param, tname); | |
192 | fIpParaFunc = pLibrary->GetIp(param, tname); | |
b22ee262 | 193 | |
194 | fPtPara = 0; | |
195 | fYPara = 0; | |
196 | fParam = param; | |
34f60c01 | 197 | fAnalog = kAnalog; |
b22ee262 | 198 | fChildSelect.Set(5); |
199 | for (Int_t i=0; i<5; i++) fChildSelect[i]=0; | |
200 | SetForceDecay(); | |
201 | SetCutOnChild(); | |
202 | SetChildMomentumRange(); | |
203 | SetChildPtRange(); | |
204 | SetChildPhiRange(); | |
205 | SetChildThetaRange(); | |
206 | SetDeltaPt(); | |
fe4da5cc | 207 | } |
208 | ||
34f60c01 | 209 | AliGenParam::AliGenParam(Int_t npart, Int_t param, |
886b6f73 | 210 | Double_t (*PtPara) (Double_t*, Double_t*), |
211 | Double_t (*YPara ) (Double_t* ,Double_t*), | |
65fb704d | 212 | Int_t (*IpPara) (TRandom *)) |
fff02fee | 213 | :AliGenMC(npart) |
886b6f73 | 214 | { |
749070b6 | 215 | // Constructor |
28337bc1 | 216 | // Gines Martinez 1/10/99 |
8b31bfac | 217 | fName = "Param"; |
218 | fTitle= "Particle Generator using pT and y parameterisation"; | |
219 | ||
886b6f73 | 220 | fPtParaFunc = PtPara; |
221 | fYParaFunc = YPara; | |
222 | fIpParaFunc = IpPara; | |
28337bc1 | 223 | // |
886b6f73 | 224 | fPtPara = 0; |
225 | fYPara = 0; | |
226 | fParam = param; | |
34f60c01 | 227 | fAnalog = kAnalog; |
886b6f73 | 228 | fChildSelect.Set(5); |
229 | for (Int_t i=0; i<5; i++) fChildSelect[i]=0; | |
230 | SetForceDecay(); | |
231 | SetCutOnChild(); | |
749070b6 | 232 | SetChildMomentumRange(); |
233 | SetChildPtRange(); | |
234 | SetChildPhiRange(); | |
235 | SetChildThetaRange(); | |
236 | SetDeltaPt(); | |
886b6f73 | 237 | } |
238 | ||
f87cfe57 | 239 | |
6d4dd317 | 240 | AliGenParam::AliGenParam(const AliGenParam & Param) |
f87cfe57 | 241 | { |
242 | // copy constructor | |
6d4dd317 | 243 | Param.Copy(*this); |
f87cfe57 | 244 | } |
245 | ||
fe4da5cc | 246 | //____________________________________________________________ |
247 | AliGenParam::~AliGenParam() | |
248 | { | |
749070b6 | 249 | // Destructor |
fe4da5cc | 250 | delete fPtPara; |
251 | delete fYPara; | |
252 | } | |
253 | ||
254 | //____________________________________________________________ | |
255 | void AliGenParam::Init() | |
256 | { | |
749070b6 | 257 | // Initialisation |
fa480368 | 258 | |
259 | fDecayer = new AliDecayerPythia(); | |
fe4da5cc | 260 | //Begin_Html |
261 | /* | |
1439f98e | 262 | <img src="picts/AliGenParam.gif"> |
fe4da5cc | 263 | */ |
264 | //End_Html | |
265 | ||
749070b6 | 266 | fPtPara = new TF1("Pt-Parametrization",fPtParaFunc,fPtMin,fPtMax,0); |
267 | // Set representation precision to 10 MeV | |
268 | Int_t npx= Int_t((fPtMax-fPtMin)/fDeltaPt); | |
269 | ||
270 | fPtPara->SetNpx(npx); | |
271 | ||
272 | fYPara = new TF1("Y -Parametrization",fYParaFunc,fYMin,fYMax,0); | |
273 | TF1* ptPara = new TF1("Pt-Parametrization",fPtParaFunc,0,15,0); | |
274 | TF1* yPara = new TF1("Y -Parametrization",fYParaFunc,-6,6,0); | |
b7601ac4 | 275 | |
fe4da5cc | 276 | // |
277 | // dN/dy| y=0 | |
749070b6 | 278 | Double_t y1=0; |
279 | Double_t y2=0; | |
280 | ||
281 | fdNdy0=fYParaFunc(&y1,&y2); | |
fe4da5cc | 282 | // |
283 | // Integral over generation region | |
749070b6 | 284 | Float_t intYS = yPara ->Integral(fYMin, fYMax); |
285 | Float_t intPt0 = ptPara->Integral(0,15); | |
286 | Float_t intPtS = ptPara->Integral(fPtMin,fPtMax); | |
287 | Float_t phiWgt=(fPhiMax-fPhiMin)/2./TMath::Pi(); | |
34f60c01 | 288 | if (fAnalog == kAnalog) { |
749070b6 | 289 | fYWgt = intYS/fdNdy0; |
290 | fPtWgt = intPtS/intPt0; | |
291 | fParentWeight = fYWgt*fPtWgt*phiWgt/fNpart; | |
292 | } else { | |
293 | fYWgt = intYS/fdNdy0; | |
294 | fPtWgt = (fPtMax-fPtMin)/intPt0; | |
295 | fParentWeight = fYWgt*fPtWgt*phiWgt/fNpart; | |
296 | } | |
fe4da5cc | 297 | // |
298 | // particle decay related initialization | |
00d6ce7d | 299 | fDecayer->SetForceDecay(fForceDecay); |
fa480368 | 300 | fDecayer->Init(); |
00d6ce7d | 301 | |
fe4da5cc | 302 | // |
fff02fee | 303 | AliGenMC::Init(); |
fe4da5cc | 304 | } |
305 | ||
306 | //____________________________________________________________ | |
307 | void AliGenParam::Generate() | |
308 | { | |
28337bc1 | 309 | // |
310 | // Generate 'npart' of light and heavy mesons (J/Psi, upsilon or phi, Pion, | |
311 | // Kaons, Etas, Omegas) and Baryons (proton, antiprotons, neutrons and | |
312 | // antineutrons in the the desired theta, phi and momentum windows; | |
313 | // Gaussian smearing on the vertex is done if selected. | |
cc5d764c | 314 | // The decay of heavy mesons is done using lujet, |
315 | // and the childern particle are tracked by GEANT | |
316 | // However, light mesons are directly tracked by GEANT | |
317 | // setting fForceDecay = nodecay (SetForceDecay(nodecay)) | |
28337bc1 | 318 | // |
771bbe45 | 319 | // |
320 | // Reinitialize decayer | |
321 | fDecayer->Init(); | |
322 | // | |
28337bc1 | 323 | Float_t polar[3]= {0,0,0}; // Polarisation of the parent particle (for GEANT tracking) |
324 | Float_t origin0[3]; // Origin of the generated parent particle (for GEANT tracking) | |
325 | Float_t pt, pl, ptot; // Transverse, logitudinal and total momenta of the parent particle | |
326 | Float_t phi, theta; // Phi and theta spherical angles of the parent particle momentum | |
327 | Float_t p[3], pc[3], | |
fff02fee | 328 | och[3]; // Momentum, polarisation and origin of the children particles from lujet |
2d7a47be | 329 | Double_t ty, xmt; |
fff02fee | 330 | Int_t nt, i, j; |
fe4da5cc | 331 | Float_t wgtp, wgtch; |
332 | Double_t dummy; | |
09fd3ea2 | 333 | static TClonesArray *particles; |
fe4da5cc | 334 | // |
fff02fee | 335 | if(!particles) particles = new TClonesArray("TParticle",1000); |
8b31bfac | 336 | |
675e9664 | 337 | static TDatabasePDG *pDataBase = new TDatabasePDG(); |
338 | if(!pDataBase) pDataBase = new TDatabasePDG(); | |
fe4da5cc | 339 | // |
340 | Float_t random[6]; | |
28337bc1 | 341 | |
342 | // Calculating vertex position per event | |
fe4da5cc | 343 | for (j=0;j<3;j++) origin0[j]=fOrigin[j]; |
aee8290b | 344 | if(fVertexSmear==kPerEvent) { |
d9ea0e3b | 345 | Vertex(); |
346 | for (j=0;j<3;j++) origin0[j]=fVertex[j]; | |
fe4da5cc | 347 | } |
d9ea0e3b | 348 | |
21aaa175 | 349 | Int_t ipa=0; |
fff02fee | 350 | |
28337bc1 | 351 | // Generating fNpart particles |
21aaa175 | 352 | while (ipa<fNpart) { |
cc5d764c | 353 | while(1) { |
fe4da5cc | 354 | // |
355 | // particle type | |
65fb704d | 356 | Int_t iPart = fIpParaFunc(fRandom); |
fa480368 | 357 | fChildWeight=(fDecayer->GetPartialBranchingRatio(iPart))*fParentWeight; |
675e9664 | 358 | TParticlePDG *particle = pDataBase->GetParticle(iPart); |
fa480368 | 359 | Float_t am = particle->Mass(); |
8b31bfac | 360 | |
65fb704d | 361 | Rndm(random,2); |
fe4da5cc | 362 | // |
363 | // phi | |
364 | phi=fPhiMin+random[0]*(fPhiMax-fPhiMin); | |
365 | // | |
366 | // y | |
2d7a47be | 367 | ty = TMath::TanH(fYPara->GetRandom()); |
fe4da5cc | 368 | // |
369 | // pT | |
34f60c01 | 370 | if (fAnalog == kAnalog) { |
fe4da5cc | 371 | pt=fPtPara->GetRandom(); |
372 | wgtp=fParentWeight; | |
373 | wgtch=fChildWeight; | |
374 | } else { | |
375 | pt=fPtMin+random[1]*(fPtMax-fPtMin); | |
376 | Double_t ptd=pt; | |
377 | wgtp=fParentWeight*fPtParaFunc(& ptd, &dummy); | |
378 | wgtch=fChildWeight*fPtParaFunc(& ptd, &dummy); | |
379 | } | |
380 | xmt=sqrt(pt*pt+am*am); | |
2d7a47be | 381 | if (TMath::Abs(ty)==1.) { |
382 | ty=0.; | |
383 | Fatal("AliGenParam", | |
384 | "Division by 0: Please check you rapidity range !"); | |
385 | } | |
386 | ||
fe4da5cc | 387 | pl=xmt*ty/sqrt(1.-ty*ty); |
388 | theta=TMath::ATan2(pt,pl); | |
cc5d764c | 389 | // Cut on theta |
fe4da5cc | 390 | if(theta<fThetaMin || theta>fThetaMax) continue; |
391 | ptot=TMath::Sqrt(pt*pt+pl*pl); | |
cc5d764c | 392 | // Cut on momentum |
fe4da5cc | 393 | if(ptot<fPMin || ptot>fPMax) continue; |
fff02fee | 394 | // |
fe4da5cc | 395 | p[0]=pt*TMath::Cos(phi); |
396 | p[1]=pt*TMath::Sin(phi); | |
397 | p[2]=pl; | |
aee8290b | 398 | if(fVertexSmear==kPerTrack) { |
65fb704d | 399 | Rndm(random,6); |
fe4da5cc | 400 | for (j=0;j<3;j++) { |
401 | origin0[j]= | |
402 | fOrigin[j]+fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
403 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
404 | } | |
405 | } | |
28337bc1 | 406 | |
407 | // Looking at fForceDecay : | |
cc5d764c | 408 | // if fForceDecay != none Primary particle decays using |
409 | // AliPythia and children are tracked by GEANT | |
28337bc1 | 410 | // |
cc5d764c | 411 | // if fForceDecay == none Primary particle is tracked by GEANT |
412 | // (In the latest, make sure that GEANT actually does all the decays you want) | |
fe4da5cc | 413 | // |
fff02fee | 414 | |
34f60c01 | 415 | if (fForceDecay != kNoDecay) { |
28337bc1 | 416 | // Using lujet to decay particle |
886b6f73 | 417 | Float_t energy=TMath::Sqrt(ptot*ptot+am*am); |
fa480368 | 418 | TLorentzVector pmom(p[0], p[1], p[2], energy); |
419 | fDecayer->Decay(iPart,&pmom); | |
fe4da5cc | 420 | // |
cc5d764c | 421 | // select decay particles |
fa480368 | 422 | Int_t np=fDecayer->ImportParticles(particles); |
886b6f73 | 423 | Int_t ncsel=0; |
fff02fee | 424 | Int_t* pFlag = new Int_t[np]; |
425 | Int_t* pParent = new Int_t[np]; | |
426 | Int_t* pSelected = new Int_t[np]; | |
427 | Int_t* trackIt = new Int_t[np]; | |
428 | ||
429 | for (i=0; i<np; i++) { | |
430 | pFlag[i] = 0; | |
431 | pSelected[i] = 0; | |
432 | pParent[i] = -1; | |
433 | } | |
434 | ||
6ba00c52 | 435 | if (np >1) { |
436 | TParticle* iparticle = (TParticle *) particles->At(0); | |
fff02fee | 437 | Int_t ipF, ipL; |
438 | for (i = 1; i<np ; i++) { | |
439 | trackIt[i] = 1; | |
6ba00c52 | 440 | iparticle = (TParticle *) particles->At(i); |
441 | Int_t kf = iparticle->GetPdgCode(); | |
fff02fee | 442 | Int_t ks = iparticle->GetStatusCode(); |
443 | // flagged particle | |
444 | ||
445 | if (pFlag[i] == 1) { | |
fff02fee | 446 | ipF = iparticle->GetFirstDaughter(); |
447 | ipL = iparticle->GetLastDaughter(); | |
448 | if (ipF > 0) for (j=ipF-1; j<ipL; j++) pFlag[j]=1; | |
449 | continue; | |
450 | } | |
451 | ||
452 | // flag decay products of particles with long life-time (c tau > .3 mum) | |
453 | ||
454 | if (ks != 1) { | |
2d7a47be | 455 | // TParticlePDG *particle = pDataBase->GetParticle(kf); |
fff02fee | 456 | |
457 | Double_t lifeTime = fDecayer->GetLifetime(kf); | |
2d7a47be | 458 | // Double_t mass = particle->Mass(); |
459 | // Double_t width = particle->Width(); | |
47fc6bd5 | 460 | if (lifeTime > (Double_t) fMaxLifeTime) { |
fff02fee | 461 | ipF = iparticle->GetFirstDaughter(); |
462 | ipL = iparticle->GetLastDaughter(); | |
463 | if (ipF > 0) for (j=ipF-1; j<ipL; j++) pFlag[j]=1; | |
464 | } else{ | |
465 | trackIt[i] = 0; | |
466 | pSelected[i] = 1; | |
467 | } | |
468 | } // ks==1 ? | |
fe4da5cc | 469 | // |
470 | // children | |
47fc6bd5 | 471 | |
fff02fee | 472 | if (ChildSelected(TMath::Abs(kf)) || fForceDecay == kAll && trackIt[i]) |
6ba00c52 | 473 | { |
6ba00c52 | 474 | if (fCutOnChild) { |
fff02fee | 475 | pc[0]=iparticle->Px(); |
476 | pc[1]=iparticle->Py(); | |
477 | pc[2]=iparticle->Pz(); | |
478 | Bool_t childok = KinematicSelection(iparticle, 1); | |
479 | if(childok) { | |
480 | pSelected[i] = 1; | |
6ba00c52 | 481 | ncsel++; |
482 | } else { | |
483 | ncsel=-1; | |
484 | break; | |
485 | } // child kine cuts | |
486 | } else { | |
fff02fee | 487 | pSelected[i] = 1; |
886b6f73 | 488 | ncsel++; |
6ba00c52 | 489 | } // if child selection |
490 | } // select muon | |
491 | } // decay particle loop | |
492 | } // if decay products | |
493 | ||
886b6f73 | 494 | Int_t iparent; |
495 | if ((fCutOnChild && ncsel >0) || !fCutOnChild){ | |
496 | ipa++; | |
21aaa175 | 497 | // |
fff02fee | 498 | // Parent |
a99cf51f | 499 | SetTrack(0, -1, iPart, p, origin0, polar, 0, kPPrimary, nt, wgtp); |
fff02fee | 500 | pParent[0] = nt; |
a99cf51f | 501 | KeepTrack(nt); |
fff02fee | 502 | // |
503 | // Decay Products | |
504 | // | |
505 | for (i = 1; i < np; i++) { | |
506 | if (pSelected[i]) { | |
507 | TParticle* iparticle = (TParticle *) particles->At(i); | |
508 | Int_t kf = iparticle->GetPdgCode(); | |
509 | Int_t ipa = iparticle->GetFirstMother()-1; | |
510 | ||
511 | och[0] = origin0[0]+iparticle->Vx()/10; | |
512 | och[1] = origin0[1]+iparticle->Vy()/10; | |
513 | och[2] = origin0[2]+iparticle->Vz()/10; | |
514 | pc[0] = iparticle->Px(); | |
515 | pc[1] = iparticle->Py(); | |
516 | pc[2] = iparticle->Pz(); | |
517 | ||
518 | if (ipa > -1) { | |
519 | iparent = pParent[ipa]; | |
520 | } else { | |
521 | iparent = -1; | |
522 | } | |
a99cf51f | 523 | SetTrack(fTrackIt*trackIt[i], iparent, kf, |
fff02fee | 524 | pc, och, polar, |
525 | 0, kPDecay, nt, wgtch); | |
526 | pParent[i] = nt; | |
a99cf51f | 527 | KeepTrack(nt); |
8b31bfac | 528 | } // Selected |
529 | } // Particle loop | |
28337bc1 | 530 | } // Decays by Lujet |
8b31bfac | 531 | particles->Clear(); |
fff02fee | 532 | if (pFlag) delete[] pFlag; |
533 | if (pParent) delete[] pParent; | |
534 | if (pSelected) delete[] pSelected; | |
8b31bfac | 535 | if (trackIt) delete[] trackIt; |
21aaa175 | 536 | } // kinematic selection |
28337bc1 | 537 | else // nodecay option, so parent will be tracked by GEANT (pions, kaons, eta, omegas, baryons) |
538 | { | |
539 | gAlice-> | |
65fb704d | 540 | SetTrack(fTrackIt,-1,iPart,p,origin0,polar,0,kPPrimary,nt,wgtp); |
28337bc1 | 541 | ipa++; |
542 | } | |
fe4da5cc | 543 | break; |
21aaa175 | 544 | } // while |
fe4da5cc | 545 | } // event loop |
a99cf51f | 546 | SetHighWaterMark(nt); |
fe4da5cc | 547 | } |
548 | ||
f87cfe57 | 549 | AliGenParam& AliGenParam::operator=(const AliGenParam& rhs) |
550 | { | |
551 | // Assignment operator | |
552 | return *this; | |
553 | } | |
554 | ||
fe4da5cc | 555 | |
556 |