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948d10f4 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>
b584e2f5 22#include <TLorentzVector.h>
23#include "AliTPythia8.h"
948d10f4 24#include "AliDecayerPythia8.h"
25#include "ParticleData.h"
26
27ClassImp(AliDecayerPythia8)
28
ad720100 29Bool_t AliDecayerPythia8::fgInit = kFALSE;
30
948d10f4 31AliDecayerPythia8::AliDecayerPythia8():
b584e2f5 32 TVirtualMCDecayer(),
33 fPythia8(new AliTPythia8()),
34 fDebug(0),
35 fDecay(kAll),
36 fHeavyFlavour(kTRUE)
948d10f4 37{
38 // Constructor
b584e2f5 39 fPythia8->Pythia8()->readString("SoftQCD:elastic = on");
40 fPythia8->Pythia8()->init();
948d10f4 41}
42
b584e2f5 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
ad720100 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) {
b584e2f5 79 AliTPythia8::Instance()->ReadString(Form("%d:onMode = off", heavy[j]));
ad720100 80 } else {
b584e2f5 81 AliTPythia8::Instance()->ReadString(Form("%d:onMode = on", heavy[j]));
ad720100 82 }
83 }
84
85
86//...Switch off decay of pi0, K0S, Lambda, Sigma+-, Xi0-, Omega-.
87
88 if (fDecay != kNeutralPion) {
b584e2f5 89 AliTPythia8::Instance()->ReadString("111:onMode = off");
ad720100 90 } else {
b584e2f5 91 AliTPythia8::Instance()->ReadString("111:onMode = on");
ad720100 92 }
93
b584e2f5 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");
ad720100 101// .. Force decay channels
102 ForceDecay();
103}
104
948d10f4 105void AliDecayerPythia8::ForceDecay()
106{
b7227478 107//
948d10f4 108// Force a particle decay mode
109// Switch heavy flavour production off if requested
110 if (!fHeavyFlavour) SwitchOffHeavyFlavour();
111//
112 Decay_t decay = fDecay;
b584e2f5 113 AliTPythia8::Instance()->ReadString("HadronLevel:Decay = on");
948d10f4 114
115 if (decay == kNoDecayHeavy) return;
116
117//
118// select mode
948d10f4 119 switch (decay)
120 {
121 case kHardMuons:
ad720100 122// B0 -> mu X
b584e2f5 123 AliTPythia8::Instance()->ReadString("511:onMode = off");
124 AliTPythia8::Instance()->ReadString("511:onIfAny = 13 443 100443");
ad720100 125// B+/- -> mu X
b584e2f5 126 AliTPythia8::Instance()->ReadString("521:onMode = off");
127 AliTPythia8::Instance()->ReadString("521:onIfAny = 13 443 100443");
ad720100 128// Bs -> mu X
b584e2f5 129 AliTPythia8::Instance()->ReadString("531:onMode = off");
130 AliTPythia8::Instance()->ReadString("531:onIfAny = 13 443 100443");
ad720100 131// Lambda_b -> mu X
b584e2f5 132 AliTPythia8::Instance()->ReadString("5122:onMode = off");
133 AliTPythia8::Instance()->ReadString("5122:onIfAny = 13 443 100443");
ad720100 134// Sigma_b- -> mu X
b584e2f5 135 AliTPythia8::Instance()->ReadString("5132:onMode = off");
136 AliTPythia8::Instance()->ReadString("5132:onIfAny = 13 443 100443");
ad720100 137// Sigma_b0 -> mu X
b584e2f5 138 AliTPythia8::Instance()->ReadString("5232:onMode = off");
139 AliTPythia8::Instance()->ReadString("5232:onIfAny = 13 443 100443");
ad720100 140// Omega_b -> mu X
b584e2f5 141 AliTPythia8::Instance()->ReadString("5332:onMode = off");
142 AliTPythia8::Instance()->ReadString("5332:onIfAny = 13 443 100443");
ad720100 143// Psi' -> mu+ mu-
b584e2f5 144 AliTPythia8::Instance()->ReadString("100443:onMode = off");
145 AliTPythia8::Instance()->ReadString("100443:onIfAny = 443");
ad720100 146// Psi -> mu+ mu-
b584e2f5 147 AliTPythia8::Instance()->ReadString("443:onMode = off");
148 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
ad720100 149// D+/- -> mu X
b584e2f5 150 AliTPythia8::Instance()->ReadString("411:onMode = off");
151 AliTPythia8::Instance()->ReadString("411:onIfAll = 13");
ad720100 152// D0 -> mu X
b584e2f5 153 AliTPythia8::Instance()->ReadString("421:onMode = off");
154 AliTPythia8::Instance()->ReadString("421:onIfAll = 13");
ad720100 155// D_s -> mu X
b584e2f5 156 AliTPythia8::Instance()->ReadString("431:onMode = off");
157 AliTPythia8::Instance()->ReadString("431:onIfAll = 13");
ad720100 158// Lambda_c -> mu X
b584e2f5 159 AliTPythia8::Instance()->ReadString("4122:onMode = off");
160 AliTPythia8::Instance()->ReadString("4122:onIfAll = 13");
ad720100 161// Sigma_c -> mu X
b584e2f5 162 AliTPythia8::Instance()->ReadString("4132:onMode = off");
163 AliTPythia8::Instance()->ReadString("4132:onIfAll = 13");
ad720100 164// Sigma_c+ -> mu X
b584e2f5 165 AliTPythia8::Instance()->ReadString("4232:onMode = off");
166 AliTPythia8::Instance()->ReadString("4232:onIfAll = 13");
ad720100 167// Omega_c -> mu X
b584e2f5 168 AliTPythia8::Instance()->ReadString("4332:onMode = off");
169 AliTPythia8::Instance()->ReadString("4332:onIfAll = 13");
b7227478 170
948d10f4 171 break;
172 case kChiToJpsiGammaToMuonMuon:
b7227478 173// Chi_1c -> J/Psi Gamma
b584e2f5 174 AliTPythia8::Instance()->ReadString("20443:onMode = off");
175 AliTPythia8::Instance()->ReadString("20443:onIfAll = 443 22");
b7227478 176// Chi_2c -> J/Psi Gamma
b584e2f5 177 AliTPythia8::Instance()->ReadString("445:onMode = off");
178 AliTPythia8::Instance()->ReadString("445:onIfAll = 443 22");
b7227478 179// J/Psi -> mu+ mu-
b584e2f5 180 AliTPythia8::Instance()->ReadString("443:onMode = off");
181 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
948d10f4 182 break;
183 case kChiToJpsiGammaToElectronElectron:
b7227478 184// Chi_1c -> J/Psi Gamma
b584e2f5 185 AliTPythia8::Instance()->ReadString("20443:onMode = off");
186 AliTPythia8::Instance()->ReadString("20443:onIfAll = 443 22");
b7227478 187// Chi_2c -> J/Psi Gamma
b584e2f5 188 AliTPythia8::Instance()->ReadString("445:onMode = off");
189 AliTPythia8::Instance()->ReadString("445:onIfAll = 443 22");
b7227478 190// J/Psi -> e+ e-
b584e2f5 191 AliTPythia8::Instance()->ReadString("443:onMode = off");
192 AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11");
948d10f4 193 break;
194
195 case kBSemiMuonic:
ad720100 196// B0 -> mu X
b584e2f5 197 AliTPythia8::Instance()->ReadString("511:onMode = off");
198 AliTPythia8::Instance()->ReadString("511:onIfAny = 13");
ad720100 199// B+/- -> mu X
b584e2f5 200 AliTPythia8::Instance()->ReadString("521:onMode = off");
201 AliTPythia8::Instance()->ReadString("521:onIfAny = 13");
ad720100 202// B_s -> mu X
b584e2f5 203 AliTPythia8::Instance()->ReadString("531:onMode = off");
204 AliTPythia8::Instance()->ReadString("531:onIfAny = 13");
ad720100 205// Lambda_b -> mu X
b584e2f5 206 AliTPythia8::Instance()->ReadString("5122:onMode = off");
207 AliTPythia8::Instance()->ReadString("5122:onIfAny = 13");
ad720100 208// Sigma_b -> mu X
b584e2f5 209 AliTPythia8::Instance()->ReadString("5132:onMode = off");
210 AliTPythia8::Instance()->ReadString("5132:onIfAny = 13");
ad720100 211// Sigma_b0 -> mu X
b584e2f5 212 AliTPythia8::Instance()->ReadString("5232:onMode = off");
213 AliTPythia8::Instance()->ReadString("5232:onIfAny = 13");
ad720100 214// Omega_b -> mu X
b584e2f5 215 AliTPythia8::Instance()->ReadString("5332:onMode = off");
216 AliTPythia8::Instance()->ReadString("5332:onIfAny = 13");
948d10f4 217 break;
218 case kSemiMuonic:
ad720100 219// D+- -> mu X
b584e2f5 220 AliTPythia8::Instance()->ReadString("411:onMode = off");
221 AliTPythia8::Instance()->ReadString("411:onIfAll = 13");
ad720100 222// D0 -> mu X
b584e2f5 223 AliTPythia8::Instance()->ReadString("421:onMode = off");
224 AliTPythia8::Instance()->ReadString("421:onIfAll = 13");
ad720100 225// D_s -> mu X
b584e2f5 226 AliTPythia8::Instance()->ReadString("431:onMode = off");
227 AliTPythia8::Instance()->ReadString("431:onIfAll = 13");
ad720100 228// Lambda_c -> mu X
b584e2f5 229 AliTPythia8::Instance()->ReadString("4122:onMode = off");
230 AliTPythia8::Instance()->ReadString("4122:onIfAll = 13");
ad720100 231// Sigma_c -> mu X
b584e2f5 232 AliTPythia8::Instance()->ReadString("4132:onMode = off");
233 AliTPythia8::Instance()->ReadString("4132:onIfAll = 13");
ad720100 234// Sigma -> mu X
b584e2f5 235 AliTPythia8::Instance()->ReadString("4232:onMode = off");
236 AliTPythia8::Instance()->ReadString("4232:onIfAll = 13");
ad720100 237// Omega_c -> mu X
b584e2f5 238 AliTPythia8::Instance()->ReadString("4332:onMode = off");
239 AliTPythia8::Instance()->ReadString("4332:onIfAll = 13");
ad720100 240// B0 -> mu X
b584e2f5 241 AliTPythia8::Instance()->ReadString("511:onMode = off");
242 AliTPythia8::Instance()->ReadString("511:onIfAny = 13");
ad720100 243// B+/- -> mu X
b584e2f5 244 AliTPythia8::Instance()->ReadString("521:onMode = off");
245 AliTPythia8::Instance()->ReadString("521:onIfAny = 13");
ad720100 246// B_s -> mu X
b584e2f5 247 AliTPythia8::Instance()->ReadString("531:onMode = off");
248 AliTPythia8::Instance()->ReadString("531:onIfAny = 13");
ad720100 249// Lambda_c -> mu X
b584e2f5 250 AliTPythia8::Instance()->ReadString("5122:onMode = off");
251 AliTPythia8::Instance()->ReadString("5122:onIfAny = 13");
ad720100 252// Sigma_c -> mu X
b584e2f5 253 AliTPythia8::Instance()->ReadString("5132:onMode = off");
254 AliTPythia8::Instance()->ReadString("5132:onIfAny = 13");
ad720100 255// Sigma_c -> mu X
b584e2f5 256 AliTPythia8::Instance()->ReadString("5232:onMode = off");
257 AliTPythia8::Instance()->ReadString("5232:onIfAny = 13");
ad720100 258// Omega_c -> mu X
b584e2f5 259 AliTPythia8::Instance()->ReadString("5332:onMode = off");
260 AliTPythia8::Instance()->ReadString("5332:onIfAny = 13");
b7227478 261
38a19176 262 break;
263 case kJpsiDiMuon:
264// J/Psi-> mu+ mu-
265 AliTPythia8::Instance()->ReadString("443:onMode = off");
266 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
948d10f4 267 break;
268 case kDiMuon:
ad720100 269// Rho -> mu+ mu-
b584e2f5 270 AliTPythia8::Instance()->ReadString("113:onMode = off");
271 AliTPythia8::Instance()->ReadString("113:onIfAll = 13 13");
ad720100 272// Eta-> mu+ mu-
b584e2f5 273 AliTPythia8::Instance()->ReadString("221:onMode = off");
274 AliTPythia8::Instance()->ReadString("221:onIfAll = 13 13");
ad720100 275// omega-> mu+ mu-
b584e2f5 276 AliTPythia8::Instance()->ReadString("223:onMode = off");
277 AliTPythia8::Instance()->ReadString("223:onIfAll = 13 13");
ad720100 278// phi-> mu+ mu-
b584e2f5 279 AliTPythia8::Instance()->ReadString("333:onMode = off");
280 AliTPythia8::Instance()->ReadString("333:onIfAll = 13 13");
ad720100 281// J/Psi-> mu+ mu-
b584e2f5 282 AliTPythia8::Instance()->ReadString("443:onMode = off");
283 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
ad720100 284// Psi'-> mu+ mu-
b584e2f5 285 AliTPythia8::Instance()->ReadString("100443:onMode = off");
286 AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13");
ad720100 287// Ups-> mu+ mu-
b584e2f5 288 AliTPythia8::Instance()->ReadString("553:onMode = off");
289 AliTPythia8::Instance()->ReadString("553:onIfAll = 13 13");
ad720100 290// Ups'-> mu+ mu-
b584e2f5 291 AliTPythia8::Instance()->ReadString("100553:onMode = off");
292 AliTPythia8::Instance()->ReadString("100553:onIfAll = 13 13");
ad720100 293// Ups''-> mu+ mu-
b584e2f5 294 AliTPythia8::Instance()->ReadString("200553:onMode = off");
295 AliTPythia8::Instance()->ReadString("200553:onIfAll = 13 13");
948d10f4 296 break;
297 case kBSemiElectronic:
ad720100 298// B0 - > e+ e-
b584e2f5 299 AliTPythia8::Instance()->ReadString("511:onMode = off");
300 AliTPythia8::Instance()->ReadString("511:onIfAny = 11");
ad720100 301// B+- -> e+ e-
b584e2f5 302 AliTPythia8::Instance()->ReadString("521:onMode = off");
303 AliTPythia8::Instance()->ReadString("521:onIfAny = 11");
ad720100 304// B_s -> e+ e-
b584e2f5 305 AliTPythia8::Instance()->ReadString("531:onMode = off");
306 AliTPythia8::Instance()->ReadString("531:onIfAny = 11");
ad720100 307// Lambda_b -> e+ e-
b584e2f5 308 AliTPythia8::Instance()->ReadString("5122:onMode = off");
309 AliTPythia8::Instance()->ReadString("5122:onIfAny = 11");
ad720100 310// Sigma_b -> e+ e-
b584e2f5 311 AliTPythia8::Instance()->ReadString("5132:onMode = off");
312 AliTPythia8::Instance()->ReadString("5132:onIfAny = 11");
ad720100 313// Sigma_b -> e+ e-
b584e2f5 314 AliTPythia8::Instance()->ReadString("5232:onMode = off");
315 AliTPythia8::Instance()->ReadString("5232:onIfAny = 11");
ad720100 316// Omega_b ->e+ e-
b584e2f5 317 AliTPythia8::Instance()->ReadString("5332:onMode = off");
318 AliTPythia8::Instance()->ReadString("5332:onIfAny = 11");
948d10f4 319 break;
320 case kSemiElectronic:
ad720100 321// D+/- -> e X
b584e2f5 322 AliTPythia8::Instance()->ReadString("411:onMode = off");
323 AliTPythia8::Instance()->ReadString("411:onIfAll = 11");
ad720100 324// D0 -> e X
b584e2f5 325 AliTPythia8::Instance()->ReadString("421:onMode = off");
326 AliTPythia8::Instance()->ReadString("421:onIfAll = 11");
ad720100 327// D_s ->e X
b584e2f5 328 AliTPythia8::Instance()->ReadString("431:onMode = off");
329 AliTPythia8::Instance()->ReadString("431:onIfAll = 11");
ad720100 330// Lambda_c -> e X
b584e2f5 331 AliTPythia8::Instance()->ReadString("4122:onMode = off");
332 AliTPythia8::Instance()->ReadString("4122:onIfAll = 11");
ad720100 333// Sigma_c -> e X
b584e2f5 334 AliTPythia8::Instance()->ReadString("4132:onMode = off");
335 AliTPythia8::Instance()->ReadString("4132:onIfAll = 11");
ad720100 336// Sigma_c -> e X
b584e2f5 337 AliTPythia8::Instance()->ReadString("4232:onMode = off");
338 AliTPythia8::Instance()->ReadString("4232:onIfAll = 11");
ad720100 339// Omega_c -> e X
b584e2f5 340 AliTPythia8::Instance()->ReadString("4332:onMode = off");
341 AliTPythia8::Instance()->ReadString("4332:onIfAll = 11");
ad720100 342// B0 -> e X
b584e2f5 343 AliTPythia8::Instance()->ReadString("511:onMode = off");
344 AliTPythia8::Instance()->ReadString("511:onIfAny = 11");
ad720100 345// B+/- -> e X
b584e2f5 346 AliTPythia8::Instance()->ReadString("521:onMode = off");
347 AliTPythia8::Instance()->ReadString("521:onIfAny = 11");
ad720100 348// B_s -> e X
b584e2f5 349 AliTPythia8::Instance()->ReadString("531:onMode = off");
350 AliTPythia8::Instance()->ReadString("531:onIfAny = 11");
ad720100 351// Lambda_b -> e X
b584e2f5 352 AliTPythia8::Instance()->ReadString("5122:onMode = off");
353 AliTPythia8::Instance()->ReadString("5122:onIfAny = 11");
ad720100 354// Sigma_b -> e X
b584e2f5 355 AliTPythia8::Instance()->ReadString("5132:onMode = off");
356 AliTPythia8::Instance()->ReadString("5132:onIfAny = 11");
ad720100 357// Sigma_b -> e X
b584e2f5 358 AliTPythia8::Instance()->ReadString("5232:onMode = off");
359 AliTPythia8::Instance()->ReadString("5232:onIfAny = 11");
ad720100 360// Omega_b -> e X
b584e2f5 361 AliTPythia8::Instance()->ReadString("5332:onMode = off");
362 AliTPythia8::Instance()->ReadString("5332:onIfAny = 11");
948d10f4 363 break;
364 case kDiElectron:
ad720100 365// Rho -> e+e-
b584e2f5 366 AliTPythia8::Instance()->ReadString("113:onMode = off");
367 AliTPythia8::Instance()->ReadString("113:onIfAll = 11 11");
ad720100 368// Eta -> e+e-
b584e2f5 369 AliTPythia8::Instance()->ReadString("221:onMode = off");
370 AliTPythia8::Instance()->ReadString("221:onIfAll = 11 11");
ad720100 371// omega -> e+e-
b584e2f5 372 AliTPythia8::Instance()->ReadString("223:onMode = off");
373 AliTPythia8::Instance()->ReadString("223:onIfAll = 11 11");
ad720100 374// phi -> e+e-
b584e2f5 375 AliTPythia8::Instance()->ReadString("333:onMode = off");
376 AliTPythia8::Instance()->ReadString("333:onIfAll = 11 11");
ad720100 377// J/Psi -> e+e-
b584e2f5 378 AliTPythia8::Instance()->ReadString("443:onMode = off");
379 AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11");
ad720100 380// Psi' -> e+e-
b584e2f5 381 AliTPythia8::Instance()->ReadString("100443:onMode = off");
382 AliTPythia8::Instance()->ReadString("100443:onIfAll = 11 11");
ad720100 383// Ups -> e+e-
b584e2f5 384 AliTPythia8::Instance()->ReadString("553:onMode = off");
385 AliTPythia8::Instance()->ReadString("553:onIfAll = 11 11");
ad720100 386// Ups' -> e+e-
b584e2f5 387 AliTPythia8::Instance()->ReadString("100553:onMode = off");
388 AliTPythia8::Instance()->ReadString("100553:onIfAll = 11 11");
ad720100 389// Ups'' -> e+e-
b584e2f5 390 AliTPythia8::Instance()->ReadString("200553:onMode = off");
391 AliTPythia8::Instance()->ReadString("200553:onIfAll = 11 11");
948d10f4 392 break;
393 case kBJpsiDiMuon:
ad720100 394// B0 -> J/Psi (Psi') X
b584e2f5 395 AliTPythia8::Instance()->ReadString("511:onMode = off");
396 AliTPythia8::Instance()->ReadString("511:onIfAny = 443 100443");
ad720100 397// B+/- -> J/Psi (Psi') X
b584e2f5 398 AliTPythia8::Instance()->ReadString("521:onMode = off");
399 AliTPythia8::Instance()->ReadString("521:onIfAny = 443 100443");
ad720100 400// B_s -> J/Psi (Psi') X
b584e2f5 401 AliTPythia8::Instance()->ReadString("531:onMode = off");
402 AliTPythia8::Instance()->ReadString("531:onIfAny = 443 100443");
ad720100 403// Lambda_b -> J/Psi (Psi') X
b584e2f5 404 AliTPythia8::Instance()->ReadString("5122:onMode = off");
405 AliTPythia8::Instance()->ReadString("5122:onIfAny = 443 100443");
b7227478 406//
ad720100 407// J/Psi -> mu+ mu-
b584e2f5 408 AliTPythia8::Instance()->ReadString("443:onMode = off");
409 AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13");
ad720100 410// Psi' -> mu+ mu-
b584e2f5 411 AliTPythia8::Instance()->ReadString("100443:onMode = off");
412 AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13");
948d10f4 413 break;
414 case kBPsiPrimeDiMuon:
ad720100 415// B0 -> Psi' X
b584e2f5 416 AliTPythia8::Instance()->ReadString("511:onMode = off");
417 AliTPythia8::Instance()->ReadString("511:onIfAny = 100443");
ad720100 418// B+/- -> Psi' X
b584e2f5 419 AliTPythia8::Instance()->ReadString("521:onMode = off");
420 AliTPythia8::Instance()->ReadString("521:onIfAny = 100443");
ad720100 421// B_s -> Psi' X
b584e2f5 422 AliTPythia8::Instance()->ReadString("531:onMode = off");
423 AliTPythia8::Instance()->ReadString("531:onIfAny = 100443");
ad720100 424// Lambda_b -> Psi' X
b584e2f5 425 AliTPythia8::Instance()->ReadString("5122:onMode = off");
426 AliTPythia8::Instance()->ReadString("5122:onIfAny = 100443");
b7227478 427//
ad720100 428// Psi' -> mu+ mu-
b584e2f5 429 AliTPythia8::Instance()->ReadString("100443:onMode = off");
430 AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13");
948d10f4 431 break;
432 case kBJpsiDiElectron:
ad720100 433// B0 -> Psi X
b584e2f5 434 AliTPythia8::Instance()->ReadString("511:onMode = off");
435 AliTPythia8::Instance()->ReadString("511:onIfAny = 443");
ad720100 436// B+/- -> Psi X
b584e2f5 437 AliTPythia8::Instance()->ReadString("521:onMode = off");
438 AliTPythia8::Instance()->ReadString("521:onIfAny = 443");
ad720100 439// B_s -> Psi X
b584e2f5 440 AliTPythia8::Instance()->ReadString("531:onMode = off");
441 AliTPythia8::Instance()->ReadString("531:onIfAny = 443");
ad720100 442// Lambda_b -> Psi X
b584e2f5 443 AliTPythia8::Instance()->ReadString("5122:onMode = off");
444 AliTPythia8::Instance()->ReadString("5122:onIfAny = 443");
b7227478 445//
ad720100 446// Psi -> mu+ mu-
b584e2f5 447 AliTPythia8::Instance()->ReadString("443:onMode = off");
448 AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11");
b7227478 449
948d10f4 450 break;
451 case kBJpsi:
ad720100 452// B0 -> Psi X
b584e2f5 453 AliTPythia8::Instance()->ReadString("511:onMode = off");
454 AliTPythia8::Instance()->ReadString("511:onIfAny = 443");
ad720100 455// B+/- -> Psi X
b584e2f5 456 AliTPythia8::Instance()->ReadString("521:onMode = off");
457 AliTPythia8::Instance()->ReadString("521:onIfAny = 443");
ad720100 458// B_s -> Psi X
b584e2f5 459 AliTPythia8::Instance()->ReadString("531:onMode = off");
460 AliTPythia8::Instance()->ReadString("531:onIfAny = 443");
ad720100 461// Lambda_b -> Psi X
b584e2f5 462 AliTPythia8::Instance()->ReadString("5122:onMode = off");
463 AliTPythia8::Instance()->ReadString("5122:onIfAny = 443");
948d10f4 464 break;
465 case kBPsiPrimeDiElectron:
ad720100 466// B0 -> Psi' X
b584e2f5 467 AliTPythia8::Instance()->ReadString("511:onMode = off");
468 AliTPythia8::Instance()->ReadString("511:onIfAny = 100443");
ad720100 469// B+/- -> Psi' X
b584e2f5 470 AliTPythia8::Instance()->ReadString("521:onMode = off");
471 AliTPythia8::Instance()->ReadString("521:onIfAny = 100443");
ad720100 472// B_s -> Psi' X
b584e2f5 473 AliTPythia8::Instance()->ReadString("531:onMode = off");
474 AliTPythia8::Instance()->ReadString("531:onIfAny = 100443");
ad720100 475// Lambda_b -> Psi' X
b584e2f5 476 AliTPythia8::Instance()->ReadString("5122:onMode = off");
477 AliTPythia8::Instance()->ReadString("5122:onIfAny = 100443");
b7227478 478//
ad720100 479// Psi' -> mu+ mu-
b584e2f5 480 AliTPythia8::Instance()->ReadString("100443:onMode = off");
481 AliTPythia8::Instance()->ReadString("100443:onIfAll = 11 11");
948d10f4 482 break;
483 case kPiToMu:
ad720100 484// pi -> mu nu
b584e2f5 485 AliTPythia8::Instance()->ReadString("211:onMode = off");
486 AliTPythia8::Instance()->ReadString("211:onIfAny = 13");
948d10f4 487 break;
488 case kKaToMu:
ad720100 489// K -> mu nu
b584e2f5 490 AliTPythia8::Instance()->ReadString("321:onMode = off");
491 AliTPythia8::Instance()->ReadString("321:onIfAny = 13");
948d10f4 492 break;
493 case kAllMuonic:
ad720100 494// pi/K -> mu
b584e2f5 495 AliTPythia8::Instance()->ReadString("211:onMode = off");
496 AliTPythia8::Instance()->ReadString("211:onIfAny = 13");
497 AliTPythia8::Instance()->ReadString("321:onMode = off");
498 AliTPythia8::Instance()->ReadString("321:onIfAny = 13");
948d10f4 499 break;
500 case kWToMuon:
ad720100 501// W -> mu X
b584e2f5 502 AliTPythia8::Instance()->ReadString("24:onMode = off");
503 AliTPythia8::Instance()->ReadString("24:onIfAny = 13");
948d10f4 504 break;
505 case kWToCharm:
ad720100 506// W -> c X
b584e2f5 507 AliTPythia8::Instance()->ReadString("24:onMode = off");
508 AliTPythia8::Instance()->ReadString("24:onIfAny = 4");
948d10f4 509 break;
510 case kWToCharmToMuon:
ad720100 511// W -> c X
b584e2f5 512 AliTPythia8::Instance()->ReadString("24:onMode = off");
513 AliTPythia8::Instance()->ReadString("24:onIfAny = 4");
ad720100 514// D+- -> mu X
b584e2f5 515 AliTPythia8::Instance()->ReadString("411:onMode = off");
516 AliTPythia8::Instance()->ReadString("411:onIfAll = 13");
ad720100 517// D0 -> mu X
b584e2f5 518 AliTPythia8::Instance()->ReadString("421:onMode = off");
519 AliTPythia8::Instance()->ReadString("421:onIfAll = 13");
ad720100 520// D_s -> mu X
b584e2f5 521 AliTPythia8::Instance()->ReadString("431:onMode = off");
522 AliTPythia8::Instance()->ReadString("431:onIfAll = 13");
ad720100 523// Lambda_c -> mu X
b584e2f5 524 AliTPythia8::Instance()->ReadString("4122:onMode = off");
525 AliTPythia8::Instance()->ReadString("4122:onIfAll = 13");
ad720100 526// Sigma_c -> mu X
b584e2f5 527 AliTPythia8::Instance()->ReadString("4132:onMode = off");
528 AliTPythia8::Instance()->ReadString("4132:onIfAll = 13");
ad720100 529// Sigma_c -> mu X
b584e2f5 530 AliTPythia8::Instance()->ReadString("4232:onMode = off");
531 AliTPythia8::Instance()->ReadString("4232:onIfAll = 13");
ad720100 532// Omega_c -> mu X
b584e2f5 533 AliTPythia8::Instance()->ReadString("4332:onMode = off");
534 AliTPythia8::Instance()->ReadString("4332:onIfAll = 13");
948d10f4 535 break;
536 case kZDiMuon:
ad720100 537// Z -> mu+ mu-
b584e2f5 538 AliTPythia8::Instance()->ReadString("23:onMode = off");
539 AliTPythia8::Instance()->ReadString("23:onIfAll = 13 13");
948d10f4 540 break;
541 case kZDiElectron:
ad720100 542// Z -> e+ e-
b584e2f5 543 AliTPythia8::Instance()->ReadString("23:onMode = off");
544 AliTPythia8::Instance()->ReadString("23:onIfAll = 11 11");
948d10f4 545 break;
546 case kHadronicD:
547 ForceHadronicD(1);
548 break;
549 case kHadronicDWithout4Bodies:
550 ForceHadronicD(0);
551 break;
552 case kPhiKK:
ad720100 553 // Phi-> K+ K-
b584e2f5 554 AliTPythia8::Instance()->ReadString("333:onMode = off");
555 AliTPythia8::Instance()->ReadString("333:onIfAll = 321 321");
948d10f4 556 break;
557 case kOmega:
ad720100 558 // Omega -> Lambda K
b584e2f5 559 AliTPythia8::Instance()->ReadString("3334:onMode = off");
560 AliTPythia8::Instance()->ReadString("3334:onIfAll = 3122 321 ");
51da44a9 561 break;
d3553100 562 case kLambda:
563 // Lambda -> p pi-
b584e2f5 564 AliTPythia8::Instance()->ReadString("3122:onMode = off");
565 AliTPythia8::Instance()->ReadString("3122:onIfAll = 2212 211 ");
51da44a9 566 break;
948d10f4 567 case kAll:
568 break;
569 case kNoDecay:
b584e2f5 570 AliTPythia8::Instance()->ReadString("HadronLevel:Decay = off");
948d10f4 571 break;
572 case kNoDecayHeavy:
1fefb2d4 573 case kNoDecayBeauty:
948d10f4 574 case kNeutralPion:
9610308a 575 case kPsiPrimeJpsiDiElectron:
7d09f746 576 case kElectronEM:
577 case kGammaEM:
578 case kDiElectronEM:
948d10f4 579 break;
580 }
581}
582
583Float_t AliDecayerPythia8::GetPartialBranchingRatio(Int_t ipart)
584{
585 // Get the partial branching ration for the forced decay channels
586
b584e2f5 587 Pythia8::Pythia* thePythia = AliTPythia8::Instance()->Pythia8();
588 Pythia8::ParticleData & table = thePythia->particleData;
589 Pythia8::ParticleDataEntry* pd = table.particleDataEntryPtr(ipart);
590
591 Int_t nc = pd->sizeChannels();
948d10f4 592 Float_t br = 0.;
593//
594// Loop over decay channels
595 for (Int_t ic = 0; ic < nc; ic++) {
b584e2f5 596 Pythia8::DecayChannel& decCh = pd->channel(ic);
b7227478 597 for (Int_t i = 0; i < decCh.multiplicity(); i++) {
948d10f4 598 br += decCh.bRatio();
599 }
600 }
601 return (br);
602}
603
604
948d10f4 605Float_t AliDecayerPythia8::GetLifetime(Int_t kf)
606{
607 // Return lifetime of particle
b584e2f5 608 Pythia8::Pythia* thePythia = AliTPythia8::Instance()->Pythia8();
609 Pythia8::ParticleData& table = thePythia->particleData;
948d10f4 610 Float_t tau = table.tau0(kf);
b584e2f5 611 return (tau);
948d10f4 612}
613
614void AliDecayerPythia8::SwitchOffHeavyFlavour()
615{
616 // Switch off heavy flavour production
617 //
618// Maximum number of quark flavours used in pdf
b584e2f5 619 AliTPythia8::Instance()->ReadString("PDFinProcess:nQuarkIn = 3");
948d10f4 620// Maximum number of flavors that can be used in showers
b584e2f5 621 AliTPythia8::Instance()->ReadString("SpaceShower:nQuarkIn = 3");
622 AliTPythia8::Instance()->ReadString("TimeShower:nGammaToQuark = 3");
623 AliTPythia8::Instance()->ReadString("TimeShower:nGluonToQuark = 3");
948d10f4 624}
625
626
627void AliDecayerPythia8::ForceHadronicD(Int_t optUse4Bodies)
628{
629//
630// Force golden D decay modes
631//
ad720100 632 // K* -> K pi
b584e2f5 633 AliTPythia8::Instance()->ReadString("313:onMode = off");
634 AliTPythia8::Instance()->ReadString("313:onIfAll = 321 211");
948d10f4 635 // for Ds -> Phi pi+
b584e2f5 636 AliTPythia8::Instance()->ReadString("333:onMode = off");
637 AliTPythia8::Instance()->ReadString("333:onIfAll = 321 321");
948d10f4 638 // for D0 -> rho0 pi+ k-
b584e2f5 639 AliTPythia8::Instance()->ReadString("113:onMode = off");
640 AliTPythia8::Instance()->ReadString("113:onIfAll = 211 211");
948d10f4 641 // for Lambda_c -> Delta++ K-
b584e2f5 642 AliTPythia8::Instance()->ReadString("2224:onMode = off");
643 AliTPythia8::Instance()->ReadString("2224:onIfAll = 2212 211");
00a8ca0b 644 // for Lambda_c -> Lambda(1520) K-
b584e2f5 645 AliTPythia8::Instance()->ReadString("3124:onMode = off");
646 AliTPythia8::Instance()->ReadString("3124:onIfAll = 2212 321");
948d10f4 647
648
b584e2f5 649 AliTPythia8::Instance()->ReadString("411:onMode = off");
650 AliTPythia8::Instance()->ReadString("421:onMode = off");
651 AliTPythia8::Instance()->ReadString("431:onMode = off");
652 AliTPythia8::Instance()->ReadString("4112:onMode = off");
653 AliTPythia8::Instance()->ReadString("4122:onMode = off");
b7227478 654
ad720100 655 // D+/- -> K pi pi
b584e2f5 656 AliTPythia8::Instance()->ReadString("411:onIfMatch = 321 211 211");
d3553100 657 // D+/- -> K* pi
b584e2f5 658 AliTPythia8::Instance()->ReadString("411:onIfMatch = 313 211");
00a8ca0b 659 // D0 -> K pi
b584e2f5 660 AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211");
ad720100 661
b7227478 662 if (optUse4Bodies) {
ad720100 663 // D0 -> K pi pi pi
b584e2f5 664 AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211 211 211");
ad720100 665 // D0 -> K pi rho
b584e2f5 666 AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211 113");
00a8ca0b 667 // D0 -> K*0 pi pi
b584e2f5 668 AliTPythia8::Instance()->ReadString("421:onIfMatch = 313 211 211");
b7227478 669 }
948d10f4 670
ad720100 671 // D_s -> K K*
b584e2f5 672 AliTPythia8::Instance()->ReadString("431:onIfMatch = 321 313");
ad720100 673 // D_s -> Phi pi
b584e2f5 674 AliTPythia8::Instance()->ReadString("431:onIfMatch = 333 211");
b7227478 675
ad720100 676 // Lambda_c -> p K*
b584e2f5 677 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2212 313");
ad720100 678 // Lambda_c -> Delta K
b584e2f5 679 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2224 321");
00a8ca0b 680 // Lambda_c -> Lambda(1520) pi
b584e2f5 681 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 3124 211");
ad720100 682 // Lambda_c -> p K pi
b584e2f5 683 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2212 321 211");
00a8ca0b 684 // Lambda_c -> Lambda pi
b584e2f5 685 AliTPythia8::Instance()->ReadString("4122:onIfMatch = 3122 211");
b7227478 686
948d10f4 687}
688
b584e2f5 689//___________________________________________________________________________
690void AliDecayerPythia8::ReadDecayTable()
691{
692 //to read a decay table (not yet implemented)
693}
694
695
696//___________________________________________________________________________
697void AliDecayerPythia8::AppendParticle(Int_t pdg, TLorentzVector* p)
698{
699 // Append a particle to the stack
700 fPythia8->Pythia8()->event.append(pdg, 11, 0, 0, p->Px(), p->Py(), p->Pz(), p->E(), p->M());
701}
702
703
704//___________________________________________________________________________
705void AliDecayerPythia8::ClearEvent()
706{
707 // Clear the event stack
708 fPythia8->Pythia8()->event.clear();
709}
710