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One more attempt to fix NEGATIVE_RETURNS defect reported by Coverity
[u/mrichter/AliRoot.git] / PYTHIA8 / AliDecayerPythia8.cxx
... / ...
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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/* $Id$ */
17
18// Implementation of AliDecayer using Pythia8
19// Author: andreas.morsch@cern.ch
20#include <TMath.h>
21#include <TPDGCode.h>
22#include <TLorentzVector.h>
23#include "AliTPythia8.h"
24#include "AliDecayerPythia8.h"
25#include "ParticleData.h"
26
27ClassImp(AliDecayerPythia8)
28
29Bool_t AliDecayerPythia8::fgInit = kFALSE;
30
31AliDecayerPythia8::AliDecayerPythia8():
32 TVirtualMCDecayer(),
33 fPythia8(new AliTPythia8()),
34 fDebug(0),
35 fDecay(kAll),
36 fHeavyFlavour(kTRUE)
37{
38 // Constructor
39 fPythia8->Pythia8()->readString("SoftQCD:elastic = on");
40 fPythia8->Pythia8()->init();
41}
42
43//___________________________________________________________________________
44void AliDecayerPythia8::Decay(Int_t pdg, TLorentzVector* p)
45{
46 // Decay a single particle
47 ClearEvent();
48 AppendParticle(pdg, p);
49 Int_t idPart = fPythia8->Pythia8()->event[0].id();
50 fPythia8->Pythia8()->particleData.mayDecay(idPart,kTRUE);
51 fPythia8->Pythia8()->moreDecays();
52 if (fDebug > 0) fPythia8->EventListing();
53}
54
55//___________________________________________________________________________
56Int_t AliDecayerPythia8::ImportParticles(TClonesArray *particles)
57{
58 //import the decay products into particles array
59 return (fPythia8->ImportParticles(particles, "All"));
60}
61
62
63void AliDecayerPythia8::Init()
64{
65// Initialisation
66//
67 if (!fgInit) {
68 fgInit = kTRUE;
69 // fPythia->SetDecayTable();
70 }
71
72// Switch on heavy flavor decays
73
74 Int_t j;
75 Int_t heavy[14] = {411, 421, 431, 4122, 4132, 4232, 4332, 511, 521, 531, 5122, 5132, 5232, 5332};
76// fPythia->ResetDecayTable();
77 for (j=0; j < 14; j++) {
78 if (fDecay == kNoDecayHeavy) {
79 AliTPythia8::Instance()->ReadString(Form("%d:onMode = off", heavy[j]));
80 } else {
81 AliTPythia8::Instance()->ReadString(Form("%d:onMode = on", heavy[j]));
82 }
83 }
84
85
86//...Switch off decay of pi0, K0S, Lambda, Sigma+-, Xi0-, Omega-.
87
88 if (fDecay != kNeutralPion) {
89 AliTPythia8::Instance()->ReadString("111:onMode = off");
90 } else {
91 AliTPythia8::Instance()->ReadString("111:onMode = on");
92 }
93
94 AliTPythia8::Instance()->ReadString("310:onMode = off");
95 AliTPythia8::Instance()->ReadString("3112:onMode = off");
96 AliTPythia8::Instance()->ReadString("3212:onMode = off");
97 AliTPythia8::Instance()->ReadString("3222:onMode = off");
98 AliTPythia8::Instance()->ReadString("3312:onMode = off");
99 AliTPythia8::Instance()->ReadString("3322:onMode = off");
100 AliTPythia8::Instance()->ReadString("3334:onMode = off");
101// .. Force decay channels
102 ForceDecay();
103}
104
105void AliDecayerPythia8::ForceDecay()
106{
107//
108// Force a particle decay mode
109// Switch heavy flavour production off if requested
110 if (!fHeavyFlavour) SwitchOffHeavyFlavour();
111//
112 Decay_t decay = fDecay;
113 AliTPythia8::Instance()->ReadString("HadronLevel:Decay = on");
114
115 if (decay == kNoDecayHeavy) return;
116
117//
118// select mode
119 switch (decay)
120 {
121 case kHardMuons:
122// B0 -> mu X
123 AliTPythia8::Instance()->ReadString("511:onMode = off");
124 AliTPythia8::Instance()->ReadString("511:onIfAny = 13 443 100443");
125// B+/- -> mu X
126 AliTPythia8::Instance()->ReadString("521:onMode = off");
127 AliTPythia8::Instance()->ReadString("521:onIfAny = 13 443 100443");
128// Bs -> mu X
129 AliTPythia8::Instance()->ReadString("531:onMode = off");
130 AliTPythia8::Instance()->ReadString("531:onIfAny = 13 443 100443");
131// Lambda_b -> mu X
132 AliTPythia8::Instance()->ReadString("5122:onMode = off");
133 AliTPythia8::Instance()->ReadString("5122:onIfAny = 13 443 100443");
134// Sigma_b- -> mu X
135 AliTPythia8::Instance()->ReadString("5132:onMode = off");
136 AliTPythia8::Instance()->ReadString("5132:onIfAny = 13 443 100443");
137// Sigma_b0 -> mu X
138 AliTPythia8::Instance()->ReadString("5232:onMode = off");
139 AliTPythia8::Instance()->ReadString("5232:onIfAny = 13 443 100443");
140// Omega_b -> mu X
141 AliTPythia8::Instance()->ReadString("5332:onMode = off");
142 AliTPythia8::Instance()->ReadString("5332:onIfAny = 13 443 100443");
143// Psi' -> mu+ mu-
144 AliTPythia8::Instance()->ReadString("100443:onMode = off");
145 AliTPythia8::Instance()->ReadString("100443:onIfAny = 443");
146// Psi -> mu+ mu-
147 AliTPythia8::Instance()->ReadString("443:onMode = off");
148 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
149// D+/- -> mu X
150 AliTPythia8::Instance()->ReadString("411:onMode = off");
151 AliTPythia8::Instance()->ReadString("411:onIfAll = 13");
152// D0 -> mu X
153 AliTPythia8::Instance()->ReadString("421:onMode = off");
154 AliTPythia8::Instance()->ReadString("421:onIfAll = 13");
155// D_s -> mu X
156 AliTPythia8::Instance()->ReadString("431:onMode = off");
157 AliTPythia8::Instance()->ReadString("431:onIfAll = 13");
158// Lambda_c -> mu X
159 AliTPythia8::Instance()->ReadString("4122:onMode = off");
160 AliTPythia8::Instance()->ReadString("4122:onIfAll = 13");
161// Sigma_c -> mu X
162 AliTPythia8::Instance()->ReadString("4132:onMode = off");
163 AliTPythia8::Instance()->ReadString("4132:onIfAll = 13");
164// Sigma_c+ -> mu X
165 AliTPythia8::Instance()->ReadString("4232:onMode = off");
166 AliTPythia8::Instance()->ReadString("4232:onIfAll = 13");
167// Omega_c -> mu X
168 AliTPythia8::Instance()->ReadString("4332:onMode = off");
169 AliTPythia8::Instance()->ReadString("4332:onIfAll = 13");
170
171 break;
172 case kChiToJpsiGammaToMuonMuon:
173// Chi_1c -> J/Psi Gamma
174 AliTPythia8::Instance()->ReadString("20443:onMode = off");
175 AliTPythia8::Instance()->ReadString("20443:onIfAll = 443 22");
176// Chi_2c -> J/Psi Gamma
177 AliTPythia8::Instance()->ReadString("445:onMode = off");
178 AliTPythia8::Instance()->ReadString("445:onIfAll = 443 22");
179// J/Psi -> mu+ mu-
180 AliTPythia8::Instance()->ReadString("443:onMode = off");
181 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
182 break;
183 case kChiToJpsiGammaToElectronElectron:
184// Chi_1c -> J/Psi Gamma
185 AliTPythia8::Instance()->ReadString("20443:onMode = off");
186 AliTPythia8::Instance()->ReadString("20443:onIfAll = 443 22");
187// Chi_2c -> J/Psi Gamma
188 AliTPythia8::Instance()->ReadString("445:onMode = off");
189 AliTPythia8::Instance()->ReadString("445:onIfAll = 443 22");
190// J/Psi -> e+ e-
191 AliTPythia8::Instance()->ReadString("443:onMode = off");
192 AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11");
193 break;
194
195 case kBSemiMuonic:
196// B0 -> mu X
197 AliTPythia8::Instance()->ReadString("511:onMode = off");
198 AliTPythia8::Instance()->ReadString("511:onIfAny = 13");
199// B+/- -> mu X
200 AliTPythia8::Instance()->ReadString("521:onMode = off");
201 AliTPythia8::Instance()->ReadString("521:onIfAny = 13");
202// B_s -> mu X
203 AliTPythia8::Instance()->ReadString("531:onMode = off");
204 AliTPythia8::Instance()->ReadString("531:onIfAny = 13");
205// Lambda_b -> mu X
206 AliTPythia8::Instance()->ReadString("5122:onMode = off");
207 AliTPythia8::Instance()->ReadString("5122:onIfAny = 13");
208// Sigma_b -> mu X
209 AliTPythia8::Instance()->ReadString("5132:onMode = off");
210 AliTPythia8::Instance()->ReadString("5132:onIfAny = 13");
211// Sigma_b0 -> mu X
212 AliTPythia8::Instance()->ReadString("5232:onMode = off");
213 AliTPythia8::Instance()->ReadString("5232:onIfAny = 13");
214// Omega_b -> mu X
215 AliTPythia8::Instance()->ReadString("5332:onMode = off");
216 AliTPythia8::Instance()->ReadString("5332:onIfAny = 13");
217 break;
218 case kSemiMuonic:
219// D+- -> mu X
220 AliTPythia8::Instance()->ReadString("411:onMode = off");
221 AliTPythia8::Instance()->ReadString("411:onIfAll = 13");
222// D0 -> mu X
223 AliTPythia8::Instance()->ReadString("421:onMode = off");
224 AliTPythia8::Instance()->ReadString("421:onIfAll = 13");
225// D_s -> mu X
226 AliTPythia8::Instance()->ReadString("431:onMode = off");
227 AliTPythia8::Instance()->ReadString("431:onIfAll = 13");
228// Lambda_c -> mu X
229 AliTPythia8::Instance()->ReadString("4122:onMode = off");
230 AliTPythia8::Instance()->ReadString("4122:onIfAll = 13");
231// Sigma_c -> mu X
232 AliTPythia8::Instance()->ReadString("4132:onMode = off");
233 AliTPythia8::Instance()->ReadString("4132:onIfAll = 13");
234// Sigma -> mu X
235 AliTPythia8::Instance()->ReadString("4232:onMode = off");
236 AliTPythia8::Instance()->ReadString("4232:onIfAll = 13");
237// Omega_c -> mu X
238 AliTPythia8::Instance()->ReadString("4332:onMode = off");
239 AliTPythia8::Instance()->ReadString("4332:onIfAll = 13");
240// B0 -> mu X
241 AliTPythia8::Instance()->ReadString("511:onMode = off");
242 AliTPythia8::Instance()->ReadString("511:onIfAny = 13");
243// B+/- -> mu X
244 AliTPythia8::Instance()->ReadString("521:onMode = off");
245 AliTPythia8::Instance()->ReadString("521:onIfAny = 13");
246// B_s -> mu X
247 AliTPythia8::Instance()->ReadString("531:onMode = off");
248 AliTPythia8::Instance()->ReadString("531:onIfAny = 13");
249// Lambda_c -> mu X
250 AliTPythia8::Instance()->ReadString("5122:onMode = off");
251 AliTPythia8::Instance()->ReadString("5122:onIfAny = 13");
252// Sigma_c -> mu X
253 AliTPythia8::Instance()->ReadString("5132:onMode = off");
254 AliTPythia8::Instance()->ReadString("5132:onIfAny = 13");
255// Sigma_c -> mu X
256 AliTPythia8::Instance()->ReadString("5232:onMode = off");
257 AliTPythia8::Instance()->ReadString("5232:onIfAny = 13");
258// Omega_c -> mu X
259 AliTPythia8::Instance()->ReadString("5332:onMode = off");
260 AliTPythia8::Instance()->ReadString("5332:onIfAny = 13");
261
262 break;
263 case kDiMuon:
264// Rho -> mu+ mu-
265 AliTPythia8::Instance()->ReadString("113:onMode = off");
266 AliTPythia8::Instance()->ReadString("113:onIfAll = 13 13");
267// Eta-> mu+ mu-
268 AliTPythia8::Instance()->ReadString("221:onMode = off");
269 AliTPythia8::Instance()->ReadString("221:onIfAll = 13 13");
270// omega-> mu+ mu-
271 AliTPythia8::Instance()->ReadString("223:onMode = off");
272 AliTPythia8::Instance()->ReadString("223:onIfAll = 13 13");
273// phi-> mu+ mu-
274 AliTPythia8::Instance()->ReadString("333:onMode = off");
275 AliTPythia8::Instance()->ReadString("333:onIfAll = 13 13");
276// J/Psi-> mu+ mu-
277 AliTPythia8::Instance()->ReadString("443:onMode = off");
278 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
279// Psi'-> mu+ mu-
280 AliTPythia8::Instance()->ReadString("100443:onMode = off");
281 AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13");
282// Ups-> mu+ mu-
283 AliTPythia8::Instance()->ReadString("553:onMode = off");
284 AliTPythia8::Instance()->ReadString("553:onIfAll = 13 13");
285// Ups'-> mu+ mu-
286 AliTPythia8::Instance()->ReadString("100553:onMode = off");
287 AliTPythia8::Instance()->ReadString("100553:onIfAll = 13 13");
288// Ups''-> mu+ mu-
289 AliTPythia8::Instance()->ReadString("200553:onMode = off");
290 AliTPythia8::Instance()->ReadString("200553:onIfAll = 13 13");
291 break;
292 case kBSemiElectronic:
293// B0 - > e+ e-
294 AliTPythia8::Instance()->ReadString("511:onMode = off");
295 AliTPythia8::Instance()->ReadString("511:onIfAny = 11");
296// B+- -> e+ e-
297 AliTPythia8::Instance()->ReadString("521:onMode = off");
298 AliTPythia8::Instance()->ReadString("521:onIfAny = 11");
299// B_s -> e+ e-
300 AliTPythia8::Instance()->ReadString("531:onMode = off");
301 AliTPythia8::Instance()->ReadString("531:onIfAny = 11");
302// Lambda_b -> e+ e-
303 AliTPythia8::Instance()->ReadString("5122:onMode = off");
304 AliTPythia8::Instance()->ReadString("5122:onIfAny = 11");
305// Sigma_b -> e+ e-
306 AliTPythia8::Instance()->ReadString("5132:onMode = off");
307 AliTPythia8::Instance()->ReadString("5132:onIfAny = 11");
308// Sigma_b -> e+ e-
309 AliTPythia8::Instance()->ReadString("5232:onMode = off");
310 AliTPythia8::Instance()->ReadString("5232:onIfAny = 11");
311// Omega_b ->e+ e-
312 AliTPythia8::Instance()->ReadString("5332:onMode = off");
313 AliTPythia8::Instance()->ReadString("5332:onIfAny = 11");
314 break;
315 case kSemiElectronic:
316// D+/- -> e X
317 AliTPythia8::Instance()->ReadString("411:onMode = off");
318 AliTPythia8::Instance()->ReadString("411:onIfAll = 11");
319// D0 -> e X
320 AliTPythia8::Instance()->ReadString("421:onMode = off");
321 AliTPythia8::Instance()->ReadString("421:onIfAll = 11");
322// D_s ->e X
323 AliTPythia8::Instance()->ReadString("431:onMode = off");
324 AliTPythia8::Instance()->ReadString("431:onIfAll = 11");
325// Lambda_c -> e X
326 AliTPythia8::Instance()->ReadString("4122:onMode = off");
327 AliTPythia8::Instance()->ReadString("4122:onIfAll = 11");
328// Sigma_c -> e X
329 AliTPythia8::Instance()->ReadString("4132:onMode = off");
330 AliTPythia8::Instance()->ReadString("4132:onIfAll = 11");
331// Sigma_c -> e X
332 AliTPythia8::Instance()->ReadString("4232:onMode = off");
333 AliTPythia8::Instance()->ReadString("4232:onIfAll = 11");
334// Omega_c -> e X
335 AliTPythia8::Instance()->ReadString("4332:onMode = off");
336 AliTPythia8::Instance()->ReadString("4332:onIfAll = 11");
337// B0 -> e X
338 AliTPythia8::Instance()->ReadString("511:onMode = off");
339 AliTPythia8::Instance()->ReadString("511:onIfAny = 11");
340// B+/- -> e X
341 AliTPythia8::Instance()->ReadString("521:onMode = off");
342 AliTPythia8::Instance()->ReadString("521:onIfAny = 11");
343// B_s -> e X
344 AliTPythia8::Instance()->ReadString("531:onMode = off");
345 AliTPythia8::Instance()->ReadString("531:onIfAny = 11");
346// Lambda_b -> e X
347 AliTPythia8::Instance()->ReadString("5122:onMode = off");
348 AliTPythia8::Instance()->ReadString("5122:onIfAny = 11");
349// Sigma_b -> e X
350 AliTPythia8::Instance()->ReadString("5132:onMode = off");
351 AliTPythia8::Instance()->ReadString("5132:onIfAny = 11");
352// Sigma_b -> e X
353 AliTPythia8::Instance()->ReadString("5232:onMode = off");
354 AliTPythia8::Instance()->ReadString("5232:onIfAny = 11");
355// Omega_b -> e X
356 AliTPythia8::Instance()->ReadString("5332:onMode = off");
357 AliTPythia8::Instance()->ReadString("5332:onIfAny = 11");
358 break;
359 case kDiElectron:
360// Rho -> e+e-
361 AliTPythia8::Instance()->ReadString("113:onMode = off");
362 AliTPythia8::Instance()->ReadString("113:onIfAll = 11 11");
363// Eta -> e+e-
364 AliTPythia8::Instance()->ReadString("221:onMode = off");
365 AliTPythia8::Instance()->ReadString("221:onIfAll = 11 11");
366// omega -> e+e-
367 AliTPythia8::Instance()->ReadString("223:onMode = off");
368 AliTPythia8::Instance()->ReadString("223:onIfAll = 11 11");
369// phi -> e+e-
370 AliTPythia8::Instance()->ReadString("333:onMode = off");
371 AliTPythia8::Instance()->ReadString("333:onIfAll = 11 11");
372// J/Psi -> e+e-
373 AliTPythia8::Instance()->ReadString("443:onMode = off");
374 AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11");
375// Psi' -> e+e-
376 AliTPythia8::Instance()->ReadString("100443:onMode = off");
377 AliTPythia8::Instance()->ReadString("100443:onIfAll = 11 11");
378// Ups -> e+e-
379 AliTPythia8::Instance()->ReadString("553:onMode = off");
380 AliTPythia8::Instance()->ReadString("553:onIfAll = 11 11");
381// Ups' -> e+e-
382 AliTPythia8::Instance()->ReadString("100553:onMode = off");
383 AliTPythia8::Instance()->ReadString("100553:onIfAll = 11 11");
384// Ups'' -> e+e-
385 AliTPythia8::Instance()->ReadString("200553:onMode = off");
386 AliTPythia8::Instance()->ReadString("200553:onIfAll = 11 11");
387 break;
388 case kBJpsiDiMuon:
389// B0 -> J/Psi (Psi') X
390 AliTPythia8::Instance()->ReadString("511:onMode = off");
391 AliTPythia8::Instance()->ReadString("511:onIfAny = 443 100443");
392// B+/- -> J/Psi (Psi') X
393 AliTPythia8::Instance()->ReadString("521:onMode = off");
394 AliTPythia8::Instance()->ReadString("521:onIfAny = 443 100443");
395// B_s -> J/Psi (Psi') X
396 AliTPythia8::Instance()->ReadString("531:onMode = off");
397 AliTPythia8::Instance()->ReadString("531:onIfAny = 443 100443");
398// Lambda_b -> J/Psi (Psi') X
399 AliTPythia8::Instance()->ReadString("5122:onMode = off");
400 AliTPythia8::Instance()->ReadString("5122:onIfAny = 443 100443");
401//
402// J/Psi -> mu+ mu-
403 AliTPythia8::Instance()->ReadString("443:onMode = off");
404 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
405// Psi' -> mu+ mu-
406 AliTPythia8::Instance()->ReadString("100443:onMode = off");
407 AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13");
408 break;
409 case kBPsiPrimeDiMuon:
410// B0 -> Psi' X
411 AliTPythia8::Instance()->ReadString("511:onMode = off");
412 AliTPythia8::Instance()->ReadString("511:onIfAny = 100443");
413// B+/- -> Psi' X
414 AliTPythia8::Instance()->ReadString("521:onMode = off");
415 AliTPythia8::Instance()->ReadString("521:onIfAny = 100443");
416// B_s -> Psi' X
417 AliTPythia8::Instance()->ReadString("531:onMode = off");
418 AliTPythia8::Instance()->ReadString("531:onIfAny = 100443");
419// Lambda_b -> Psi' X
420 AliTPythia8::Instance()->ReadString("5122:onMode = off");
421 AliTPythia8::Instance()->ReadString("5122:onIfAny = 100443");
422//
423// Psi' -> mu+ mu-
424 AliTPythia8::Instance()->ReadString("100443:onMode = off");
425 AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13");
426 break;
427 case kBJpsiDiElectron:
428// B0 -> Psi X
429 AliTPythia8::Instance()->ReadString("511:onMode = off");
430 AliTPythia8::Instance()->ReadString("511:onIfAny = 443");
431// B+/- -> Psi X
432 AliTPythia8::Instance()->ReadString("521:onMode = off");
433 AliTPythia8::Instance()->ReadString("521:onIfAny = 443");
434// B_s -> Psi X
435 AliTPythia8::Instance()->ReadString("531:onMode = off");
436 AliTPythia8::Instance()->ReadString("531:onIfAny = 443");
437// Lambda_b -> Psi X
438 AliTPythia8::Instance()->ReadString("5122:onMode = off");
439 AliTPythia8::Instance()->ReadString("5122:onIfAny = 443");
440//
441// Psi -> mu+ mu-
442 AliTPythia8::Instance()->ReadString("443:onMode = off");
443 AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11");
444
445 break;
446 case kBJpsi:
447// B0 -> Psi X
448 AliTPythia8::Instance()->ReadString("511:onMode = off");
449 AliTPythia8::Instance()->ReadString("511:onIfAny = 443");
450// B+/- -> Psi X
451 AliTPythia8::Instance()->ReadString("521:onMode = off");
452 AliTPythia8::Instance()->ReadString("521:onIfAny = 443");
453// B_s -> Psi X
454 AliTPythia8::Instance()->ReadString("531:onMode = off");
455 AliTPythia8::Instance()->ReadString("531:onIfAny = 443");
456// Lambda_b -> Psi X
457 AliTPythia8::Instance()->ReadString("5122:onMode = off");
458 AliTPythia8::Instance()->ReadString("5122:onIfAny = 443");
459 break;
460 case kBPsiPrimeDiElectron:
461// B0 -> Psi' X
462 AliTPythia8::Instance()->ReadString("511:onMode = off");
463 AliTPythia8::Instance()->ReadString("511:onIfAny = 100443");
464// B+/- -> Psi' X
465 AliTPythia8::Instance()->ReadString("521:onMode = off");
466 AliTPythia8::Instance()->ReadString("521:onIfAny = 100443");
467// B_s -> Psi' X
468 AliTPythia8::Instance()->ReadString("531:onMode = off");
469 AliTPythia8::Instance()->ReadString("531:onIfAny = 100443");
470// Lambda_b -> Psi' X
471 AliTPythia8::Instance()->ReadString("5122:onMode = off");
472 AliTPythia8::Instance()->ReadString("5122:onIfAny = 100443");
473//
474// Psi' -> mu+ mu-
475 AliTPythia8::Instance()->ReadString("100443:onMode = off");
476 AliTPythia8::Instance()->ReadString("100443:onIfAll = 11 11");
477 break;
478 case kPiToMu:
479// pi -> mu nu
480 AliTPythia8::Instance()->ReadString("211:onMode = off");
481 AliTPythia8::Instance()->ReadString("211:onIfAny = 13");
482 break;
483 case kKaToMu:
484// K -> mu nu
485 AliTPythia8::Instance()->ReadString("321:onMode = off");
486 AliTPythia8::Instance()->ReadString("321:onIfAny = 13");
487 break;
488 case kAllMuonic:
489// pi/K -> mu
490 AliTPythia8::Instance()->ReadString("211:onMode = off");
491 AliTPythia8::Instance()->ReadString("211:onIfAny = 13");
492 AliTPythia8::Instance()->ReadString("321:onMode = off");
493 AliTPythia8::Instance()->ReadString("321:onIfAny = 13");
494 break;
495 case kWToMuon:
496// W -> mu X
497 AliTPythia8::Instance()->ReadString("24:onMode = off");
498 AliTPythia8::Instance()->ReadString("24:onIfAny = 13");
499 break;
500 case kWToCharm:
501// W -> c X
502 AliTPythia8::Instance()->ReadString("24:onMode = off");
503 AliTPythia8::Instance()->ReadString("24:onIfAny = 4");
504 break;
505 case kWToCharmToMuon:
506// W -> c X
507 AliTPythia8::Instance()->ReadString("24:onMode = off");
508 AliTPythia8::Instance()->ReadString("24:onIfAny = 4");
509// D+- -> mu X
510 AliTPythia8::Instance()->ReadString("411:onMode = off");
511 AliTPythia8::Instance()->ReadString("411:onIfAll = 13");
512// D0 -> mu X
513 AliTPythia8::Instance()->ReadString("421:onMode = off");
514 AliTPythia8::Instance()->ReadString("421:onIfAll = 13");
515// D_s -> mu X
516 AliTPythia8::Instance()->ReadString("431:onMode = off");
517 AliTPythia8::Instance()->ReadString("431:onIfAll = 13");
518// Lambda_c -> mu X
519 AliTPythia8::Instance()->ReadString("4122:onMode = off");
520 AliTPythia8::Instance()->ReadString("4122:onIfAll = 13");
521// Sigma_c -> mu X
522 AliTPythia8::Instance()->ReadString("4132:onMode = off");
523 AliTPythia8::Instance()->ReadString("4132:onIfAll = 13");
524// Sigma_c -> mu X
525 AliTPythia8::Instance()->ReadString("4232:onMode = off");
526 AliTPythia8::Instance()->ReadString("4232:onIfAll = 13");
527// Omega_c -> mu X
528 AliTPythia8::Instance()->ReadString("4332:onMode = off");
529 AliTPythia8::Instance()->ReadString("4332:onIfAll = 13");
530 break;
531 case kZDiMuon:
532// Z -> mu+ mu-
533 AliTPythia8::Instance()->ReadString("23:onMode = off");
534 AliTPythia8::Instance()->ReadString("23:onIfAll = 13 13");
535 break;
536 case kZDiElectron:
537// Z -> e+ e-
538 AliTPythia8::Instance()->ReadString("23:onMode = off");
539 AliTPythia8::Instance()->ReadString("23:onIfAll = 11 11");
540 break;
541 case kHadronicD:
542 ForceHadronicD(1);
543 break;
544 case kHadronicDWithout4Bodies:
545 ForceHadronicD(0);
546 break;
547 case kPhiKK:
548 // Phi-> K+ K-
549 AliTPythia8::Instance()->ReadString("333:onMode = off");
550 AliTPythia8::Instance()->ReadString("333:onIfAll = 321 321");
551 break;
552 case kOmega:
553 // Omega -> Lambda K
554 AliTPythia8::Instance()->ReadString("3334:onMode = off");
555 AliTPythia8::Instance()->ReadString("3334:onIfAll = 3122 321 ");
556 case kLambda:
557 // Lambda -> p pi-
558 AliTPythia8::Instance()->ReadString("3122:onMode = off");
559 AliTPythia8::Instance()->ReadString("3122:onIfAll = 2212 211 ");
560 case kAll:
561 break;
562 case kNoDecay:
563 AliTPythia8::Instance()->ReadString("HadronLevel:Decay = off");
564 break;
565 case kNoDecayHeavy:
566 case kNoDecayBeauty:
567 case kNeutralPion:
568 case kPsiPrimeJpsiDiElectron:
569 break;
570 }
571}
572
573Float_t AliDecayerPythia8::GetPartialBranchingRatio(Int_t ipart)
574{
575 // Get the partial branching ration for the forced decay channels
576
577 Pythia8::Pythia* thePythia = AliTPythia8::Instance()->Pythia8();
578 Pythia8::ParticleData & table = thePythia->particleData;
579 Pythia8::ParticleDataEntry* pd = table.particleDataEntryPtr(ipart);
580
581 Int_t nc = pd->sizeChannels();
582 Float_t br = 0.;
583//
584// Loop over decay channels
585 for (Int_t ic = 0; ic < nc; ic++) {
586 Pythia8::DecayChannel& decCh = pd->channel(ic);
587 for (Int_t i = 0; i < decCh.multiplicity(); i++) {
588 br += decCh.bRatio();
589 }
590 }
591 return (br);
592}
593
594
595Float_t AliDecayerPythia8::GetLifetime(Int_t kf)
596{
597 // Return lifetime of particle
598 Pythia8::Pythia* thePythia = AliTPythia8::Instance()->Pythia8();
599 Pythia8::ParticleData& table = thePythia->particleData;
600 Float_t tau = table.tau0(kf);
601 return (tau);
602}
603
604void AliDecayerPythia8::SwitchOffHeavyFlavour()
605{
606 // Switch off heavy flavour production
607 //
608// Maximum number of quark flavours used in pdf
609 AliTPythia8::Instance()->ReadString("PDFinProcess:nQuarkIn = 3");
610// Maximum number of flavors that can be used in showers
611 AliTPythia8::Instance()->ReadString("SpaceShower:nQuarkIn = 3");
612 AliTPythia8::Instance()->ReadString("TimeShower:nGammaToQuark = 3");
613 AliTPythia8::Instance()->ReadString("TimeShower:nGluonToQuark = 3");
614}
615
616
617void AliDecayerPythia8::ForceHadronicD(Int_t optUse4Bodies)
618{
619//
620// Force golden D decay modes
621//
622 // K* -> K pi
623 AliTPythia8::Instance()->ReadString("313:onMode = off");
624 AliTPythia8::Instance()->ReadString("313:onIfAll = 321 211");
625 // for Ds -> Phi pi+
626 AliTPythia8::Instance()->ReadString("333:onMode = off");
627 AliTPythia8::Instance()->ReadString("333:onIfAll = 321 321");
628 // for D0 -> rho0 pi+ k-
629 AliTPythia8::Instance()->ReadString("113:onMode = off");
630 AliTPythia8::Instance()->ReadString("113:onIfAll = 211 211");
631 // for Lambda_c -> Delta++ K-
632 AliTPythia8::Instance()->ReadString("2224:onMode = off");
633 AliTPythia8::Instance()->ReadString("2224:onIfAll = 2212 211");
634 // for Lambda_c -> Lambda(1520) K-
635 AliTPythia8::Instance()->ReadString("3124:onMode = off");
636 AliTPythia8::Instance()->ReadString("3124:onIfAll = 2212 321");
637
638
639 AliTPythia8::Instance()->ReadString("411:onMode = off");
640 AliTPythia8::Instance()->ReadString("421:onMode = off");
641 AliTPythia8::Instance()->ReadString("431:onMode = off");
642 AliTPythia8::Instance()->ReadString("4112:onMode = off");
643 AliTPythia8::Instance()->ReadString("4122:onMode = off");
644
645 // D+/- -> K pi pi
646 AliTPythia8::Instance()->ReadString("411:onIfMatch = 321 211 211");
647 // D+/- -> K* pi
648 AliTPythia8::Instance()->ReadString("411:onIfMatch = 313 211");
649 // D0 -> K pi
650 AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211");
651
652 if (optUse4Bodies) {
653 // D0 -> K pi pi pi
654 AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211 211 211");
655 // D0 -> K pi rho
656 AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211 113");
657 // D0 -> K*0 pi pi
658 AliTPythia8::Instance()->ReadString("421:onIfMatch = 313 211 211");
659 }
660
661 // D_s -> K K*
662 AliTPythia8::Instance()->ReadString("431:onIfMatch = 321 313");
663 // D_s -> Phi pi
664 AliTPythia8::Instance()->ReadString("431:onIfMatch = 333 211");
665
666 // Lambda_c -> p K*
667 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2212 313");
668 // Lambda_c -> Delta K
669 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2224 321");
670 // Lambda_c -> Lambda(1520) pi
671 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 3124 211");
672 // Lambda_c -> p K pi
673 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2212 321 211");
674 // Lambda_c -> Lambda pi
675 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 3122 211");
676
677}
678
679//___________________________________________________________________________
680void AliDecayerPythia8::ReadDecayTable()
681{
682 //to read a decay table (not yet implemented)
683}
684
685
686//___________________________________________________________________________
687void AliDecayerPythia8::AppendParticle(Int_t pdg, TLorentzVector* p)
688{
689 // Append a particle to the stack
690 fPythia8->Pythia8()->event.append(pdg, 11, 0, 0, p->Px(), p->Py(), p->Pz(), p->E(), p->M());
691}
692
693
694//___________________________________________________________________________
695void AliDecayerPythia8::ClearEvent()
696{
697 // Clear the event stack
698 fPythia8->Pythia8()->event.clear();
699}
700