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