]>
Commit | Line | Data |
---|---|---|
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 | ||
27 | ClassImp(AliDecayerPythia8) | |
28 | ||
ad720100 | 29 | Bool_t AliDecayerPythia8::fgInit = kFALSE; |
30 | ||
948d10f4 | 31 | AliDecayerPythia8::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 | //___________________________________________________________________________ |
44 | void 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 | //___________________________________________________________________________ | |
56 | Int_t AliDecayerPythia8::ImportParticles(TClonesArray *particles) | |
57 | { | |
58 | //import the decay products into particles array | |
59 | return (fPythia8->ImportParticles(particles, "All")); | |
60 | } | |
61 | ||
62 | ||
ad720100 | 63 | void 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 | 105 | void 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 | |
948d10f4 | 262 | break; |
263 | case kDiMuon: | |
ad720100 | 264 | // Rho -> mu+ mu- |
b584e2f5 | 265 | AliTPythia8::Instance()->ReadString("113:onMode = off"); |
266 | AliTPythia8::Instance()->ReadString("113:onIfAll = 13 13"); | |
ad720100 | 267 | // Eta-> mu+ mu- |
b584e2f5 | 268 | AliTPythia8::Instance()->ReadString("221:onMode = off"); |
269 | AliTPythia8::Instance()->ReadString("221:onIfAll = 13 13"); | |
ad720100 | 270 | // omega-> mu+ mu- |
b584e2f5 | 271 | AliTPythia8::Instance()->ReadString("223:onMode = off"); |
272 | AliTPythia8::Instance()->ReadString("223:onIfAll = 13 13"); | |
ad720100 | 273 | // phi-> mu+ mu- |
b584e2f5 | 274 | AliTPythia8::Instance()->ReadString("333:onMode = off"); |
275 | AliTPythia8::Instance()->ReadString("333:onIfAll = 13 13"); | |
ad720100 | 276 | // J/Psi-> mu+ mu- |
b584e2f5 | 277 | AliTPythia8::Instance()->ReadString("443:onMode = off"); |
278 | AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13"); | |
ad720100 | 279 | // Psi'-> mu+ mu- |
b584e2f5 | 280 | AliTPythia8::Instance()->ReadString("100443:onMode = off"); |
281 | AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13"); | |
ad720100 | 282 | // Ups-> mu+ mu- |
b584e2f5 | 283 | AliTPythia8::Instance()->ReadString("553:onMode = off"); |
284 | AliTPythia8::Instance()->ReadString("553:onIfAll = 13 13"); | |
ad720100 | 285 | // Ups'-> mu+ mu- |
b584e2f5 | 286 | AliTPythia8::Instance()->ReadString("100553:onMode = off"); |
287 | AliTPythia8::Instance()->ReadString("100553:onIfAll = 13 13"); | |
ad720100 | 288 | // Ups''-> mu+ mu- |
b584e2f5 | 289 | AliTPythia8::Instance()->ReadString("200553:onMode = off"); |
290 | AliTPythia8::Instance()->ReadString("200553:onIfAll = 13 13"); | |
948d10f4 | 291 | break; |
292 | case kBSemiElectronic: | |
ad720100 | 293 | // B0 - > e+ e- |
b584e2f5 | 294 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
295 | AliTPythia8::Instance()->ReadString("511:onIfAny = 11"); | |
ad720100 | 296 | // B+- -> e+ e- |
b584e2f5 | 297 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
298 | AliTPythia8::Instance()->ReadString("521:onIfAny = 11"); | |
ad720100 | 299 | // B_s -> e+ e- |
b584e2f5 | 300 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
301 | AliTPythia8::Instance()->ReadString("531:onIfAny = 11"); | |
ad720100 | 302 | // Lambda_b -> e+ e- |
b584e2f5 | 303 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
304 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 11"); | |
ad720100 | 305 | // Sigma_b -> e+ e- |
b584e2f5 | 306 | AliTPythia8::Instance()->ReadString("5132:onMode = off"); |
307 | AliTPythia8::Instance()->ReadString("5132:onIfAny = 11"); | |
ad720100 | 308 | // Sigma_b -> e+ e- |
b584e2f5 | 309 | AliTPythia8::Instance()->ReadString("5232:onMode = off"); |
310 | AliTPythia8::Instance()->ReadString("5232:onIfAny = 11"); | |
ad720100 | 311 | // Omega_b ->e+ e- |
b584e2f5 | 312 | AliTPythia8::Instance()->ReadString("5332:onMode = off"); |
313 | AliTPythia8::Instance()->ReadString("5332:onIfAny = 11"); | |
948d10f4 | 314 | break; |
315 | case kSemiElectronic: | |
ad720100 | 316 | // D+/- -> e X |
b584e2f5 | 317 | AliTPythia8::Instance()->ReadString("411:onMode = off"); |
318 | AliTPythia8::Instance()->ReadString("411:onIfAll = 11"); | |
ad720100 | 319 | // D0 -> e X |
b584e2f5 | 320 | AliTPythia8::Instance()->ReadString("421:onMode = off"); |
321 | AliTPythia8::Instance()->ReadString("421:onIfAll = 11"); | |
ad720100 | 322 | // D_s ->e X |
b584e2f5 | 323 | AliTPythia8::Instance()->ReadString("431:onMode = off"); |
324 | AliTPythia8::Instance()->ReadString("431:onIfAll = 11"); | |
ad720100 | 325 | // Lambda_c -> e X |
b584e2f5 | 326 | AliTPythia8::Instance()->ReadString("4122:onMode = off"); |
327 | AliTPythia8::Instance()->ReadString("4122:onIfAll = 11"); | |
ad720100 | 328 | // Sigma_c -> e X |
b584e2f5 | 329 | AliTPythia8::Instance()->ReadString("4132:onMode = off"); |
330 | AliTPythia8::Instance()->ReadString("4132:onIfAll = 11"); | |
ad720100 | 331 | // Sigma_c -> e X |
b584e2f5 | 332 | AliTPythia8::Instance()->ReadString("4232:onMode = off"); |
333 | AliTPythia8::Instance()->ReadString("4232:onIfAll = 11"); | |
ad720100 | 334 | // Omega_c -> e X |
b584e2f5 | 335 | AliTPythia8::Instance()->ReadString("4332:onMode = off"); |
336 | AliTPythia8::Instance()->ReadString("4332:onIfAll = 11"); | |
ad720100 | 337 | // B0 -> e X |
b584e2f5 | 338 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
339 | AliTPythia8::Instance()->ReadString("511:onIfAny = 11"); | |
ad720100 | 340 | // B+/- -> e X |
b584e2f5 | 341 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
342 | AliTPythia8::Instance()->ReadString("521:onIfAny = 11"); | |
ad720100 | 343 | // B_s -> e X |
b584e2f5 | 344 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
345 | AliTPythia8::Instance()->ReadString("531:onIfAny = 11"); | |
ad720100 | 346 | // Lambda_b -> e X |
b584e2f5 | 347 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
348 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 11"); | |
ad720100 | 349 | // Sigma_b -> e X |
b584e2f5 | 350 | AliTPythia8::Instance()->ReadString("5132:onMode = off"); |
351 | AliTPythia8::Instance()->ReadString("5132:onIfAny = 11"); | |
ad720100 | 352 | // Sigma_b -> e X |
b584e2f5 | 353 | AliTPythia8::Instance()->ReadString("5232:onMode = off"); |
354 | AliTPythia8::Instance()->ReadString("5232:onIfAny = 11"); | |
ad720100 | 355 | // Omega_b -> e X |
b584e2f5 | 356 | AliTPythia8::Instance()->ReadString("5332:onMode = off"); |
357 | AliTPythia8::Instance()->ReadString("5332:onIfAny = 11"); | |
948d10f4 | 358 | break; |
359 | case kDiElectron: | |
ad720100 | 360 | // Rho -> e+e- |
b584e2f5 | 361 | AliTPythia8::Instance()->ReadString("113:onMode = off"); |
362 | AliTPythia8::Instance()->ReadString("113:onIfAll = 11 11"); | |
ad720100 | 363 | // Eta -> e+e- |
b584e2f5 | 364 | AliTPythia8::Instance()->ReadString("221:onMode = off"); |
365 | AliTPythia8::Instance()->ReadString("221:onIfAll = 11 11"); | |
ad720100 | 366 | // omega -> e+e- |
b584e2f5 | 367 | AliTPythia8::Instance()->ReadString("223:onMode = off"); |
368 | AliTPythia8::Instance()->ReadString("223:onIfAll = 11 11"); | |
ad720100 | 369 | // phi -> e+e- |
b584e2f5 | 370 | AliTPythia8::Instance()->ReadString("333:onMode = off"); |
371 | AliTPythia8::Instance()->ReadString("333:onIfAll = 11 11"); | |
ad720100 | 372 | // J/Psi -> e+e- |
b584e2f5 | 373 | AliTPythia8::Instance()->ReadString("443:onMode = off"); |
374 | AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11"); | |
ad720100 | 375 | // Psi' -> e+e- |
b584e2f5 | 376 | AliTPythia8::Instance()->ReadString("100443:onMode = off"); |
377 | AliTPythia8::Instance()->ReadString("100443:onIfAll = 11 11"); | |
ad720100 | 378 | // Ups -> e+e- |
b584e2f5 | 379 | AliTPythia8::Instance()->ReadString("553:onMode = off"); |
380 | AliTPythia8::Instance()->ReadString("553:onIfAll = 11 11"); | |
ad720100 | 381 | // Ups' -> e+e- |
b584e2f5 | 382 | AliTPythia8::Instance()->ReadString("100553:onMode = off"); |
383 | AliTPythia8::Instance()->ReadString("100553:onIfAll = 11 11"); | |
ad720100 | 384 | // Ups'' -> e+e- |
b584e2f5 | 385 | AliTPythia8::Instance()->ReadString("200553:onMode = off"); |
386 | AliTPythia8::Instance()->ReadString("200553:onIfAll = 11 11"); | |
948d10f4 | 387 | break; |
388 | case kBJpsiDiMuon: | |
ad720100 | 389 | // B0 -> J/Psi (Psi') X |
b584e2f5 | 390 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
391 | AliTPythia8::Instance()->ReadString("511:onIfAny = 443 100443"); | |
ad720100 | 392 | // B+/- -> J/Psi (Psi') X |
b584e2f5 | 393 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
394 | AliTPythia8::Instance()->ReadString("521:onIfAny = 443 100443"); | |
ad720100 | 395 | // B_s -> J/Psi (Psi') X |
b584e2f5 | 396 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
397 | AliTPythia8::Instance()->ReadString("531:onIfAny = 443 100443"); | |
ad720100 | 398 | // Lambda_b -> J/Psi (Psi') X |
b584e2f5 | 399 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
400 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 443 100443"); | |
b7227478 | 401 | // |
ad720100 | 402 | // J/Psi -> mu+ mu- |
b584e2f5 | 403 | AliTPythia8::Instance()->ReadString("443:onMode = off"); |
404 | AliTPythia8::Instance()->ReadString("443:onIfAll = 13 13"); | |
ad720100 | 405 | // Psi' -> mu+ mu- |
b584e2f5 | 406 | AliTPythia8::Instance()->ReadString("100443:onMode = off"); |
407 | AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13"); | |
948d10f4 | 408 | break; |
409 | case kBPsiPrimeDiMuon: | |
ad720100 | 410 | // B0 -> Psi' X |
b584e2f5 | 411 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
412 | AliTPythia8::Instance()->ReadString("511:onIfAny = 100443"); | |
ad720100 | 413 | // B+/- -> Psi' X |
b584e2f5 | 414 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
415 | AliTPythia8::Instance()->ReadString("521:onIfAny = 100443"); | |
ad720100 | 416 | // B_s -> Psi' X |
b584e2f5 | 417 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
418 | AliTPythia8::Instance()->ReadString("531:onIfAny = 100443"); | |
ad720100 | 419 | // Lambda_b -> Psi' X |
b584e2f5 | 420 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
421 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 100443"); | |
b7227478 | 422 | // |
ad720100 | 423 | // Psi' -> mu+ mu- |
b584e2f5 | 424 | AliTPythia8::Instance()->ReadString("100443:onMode = off"); |
425 | AliTPythia8::Instance()->ReadString("100443:onIfAll = 13 13"); | |
948d10f4 | 426 | break; |
427 | case kBJpsiDiElectron: | |
ad720100 | 428 | // B0 -> Psi X |
b584e2f5 | 429 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
430 | AliTPythia8::Instance()->ReadString("511:onIfAny = 443"); | |
ad720100 | 431 | // B+/- -> Psi X |
b584e2f5 | 432 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
433 | AliTPythia8::Instance()->ReadString("521:onIfAny = 443"); | |
ad720100 | 434 | // B_s -> Psi X |
b584e2f5 | 435 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
436 | AliTPythia8::Instance()->ReadString("531:onIfAny = 443"); | |
ad720100 | 437 | // Lambda_b -> Psi X |
b584e2f5 | 438 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
439 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 443"); | |
b7227478 | 440 | // |
ad720100 | 441 | // Psi -> mu+ mu- |
b584e2f5 | 442 | AliTPythia8::Instance()->ReadString("443:onMode = off"); |
443 | AliTPythia8::Instance()->ReadString("443:onIfAll = 11 11"); | |
b7227478 | 444 | |
948d10f4 | 445 | break; |
446 | case kBJpsi: | |
ad720100 | 447 | // B0 -> Psi X |
b584e2f5 | 448 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
449 | AliTPythia8::Instance()->ReadString("511:onIfAny = 443"); | |
ad720100 | 450 | // B+/- -> Psi X |
b584e2f5 | 451 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
452 | AliTPythia8::Instance()->ReadString("521:onIfAny = 443"); | |
ad720100 | 453 | // B_s -> Psi X |
b584e2f5 | 454 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
455 | AliTPythia8::Instance()->ReadString("531:onIfAny = 443"); | |
ad720100 | 456 | // Lambda_b -> Psi X |
b584e2f5 | 457 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
458 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 443"); | |
948d10f4 | 459 | break; |
460 | case kBPsiPrimeDiElectron: | |
ad720100 | 461 | // B0 -> Psi' X |
b584e2f5 | 462 | AliTPythia8::Instance()->ReadString("511:onMode = off"); |
463 | AliTPythia8::Instance()->ReadString("511:onIfAny = 100443"); | |
ad720100 | 464 | // B+/- -> Psi' X |
b584e2f5 | 465 | AliTPythia8::Instance()->ReadString("521:onMode = off"); |
466 | AliTPythia8::Instance()->ReadString("521:onIfAny = 100443"); | |
ad720100 | 467 | // B_s -> Psi' X |
b584e2f5 | 468 | AliTPythia8::Instance()->ReadString("531:onMode = off"); |
469 | AliTPythia8::Instance()->ReadString("531:onIfAny = 100443"); | |
ad720100 | 470 | // Lambda_b -> Psi' X |
b584e2f5 | 471 | AliTPythia8::Instance()->ReadString("5122:onMode = off"); |
472 | AliTPythia8::Instance()->ReadString("5122:onIfAny = 100443"); | |
b7227478 | 473 | // |
ad720100 | 474 | // Psi' -> mu+ mu- |
b584e2f5 | 475 | AliTPythia8::Instance()->ReadString("100443:onMode = off"); |
476 | AliTPythia8::Instance()->ReadString("100443:onIfAll = 11 11"); | |
948d10f4 | 477 | break; |
478 | case kPiToMu: | |
ad720100 | 479 | // pi -> mu nu |
b584e2f5 | 480 | AliTPythia8::Instance()->ReadString("211:onMode = off"); |
481 | AliTPythia8::Instance()->ReadString("211:onIfAny = 13"); | |
948d10f4 | 482 | break; |
483 | case kKaToMu: | |
ad720100 | 484 | // K -> mu nu |
b584e2f5 | 485 | AliTPythia8::Instance()->ReadString("321:onMode = off"); |
486 | AliTPythia8::Instance()->ReadString("321:onIfAny = 13"); | |
948d10f4 | 487 | break; |
488 | case kAllMuonic: | |
ad720100 | 489 | // pi/K -> mu |
b584e2f5 | 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"); | |
948d10f4 | 494 | break; |
495 | case kWToMuon: | |
ad720100 | 496 | // W -> mu X |
b584e2f5 | 497 | AliTPythia8::Instance()->ReadString("24:onMode = off"); |
498 | AliTPythia8::Instance()->ReadString("24:onIfAny = 13"); | |
948d10f4 | 499 | break; |
500 | case kWToCharm: | |
ad720100 | 501 | // W -> c X |
b584e2f5 | 502 | AliTPythia8::Instance()->ReadString("24:onMode = off"); |
503 | AliTPythia8::Instance()->ReadString("24:onIfAny = 4"); | |
948d10f4 | 504 | break; |
505 | case kWToCharmToMuon: | |
ad720100 | 506 | // W -> c X |
b584e2f5 | 507 | AliTPythia8::Instance()->ReadString("24:onMode = off"); |
508 | AliTPythia8::Instance()->ReadString("24:onIfAny = 4"); | |
ad720100 | 509 | // D+- -> mu X |
b584e2f5 | 510 | AliTPythia8::Instance()->ReadString("411:onMode = off"); |
511 | AliTPythia8::Instance()->ReadString("411:onIfAll = 13"); | |
ad720100 | 512 | // D0 -> mu X |
b584e2f5 | 513 | AliTPythia8::Instance()->ReadString("421:onMode = off"); |
514 | AliTPythia8::Instance()->ReadString("421:onIfAll = 13"); | |
ad720100 | 515 | // D_s -> mu X |
b584e2f5 | 516 | AliTPythia8::Instance()->ReadString("431:onMode = off"); |
517 | AliTPythia8::Instance()->ReadString("431:onIfAll = 13"); | |
ad720100 | 518 | // Lambda_c -> mu X |
b584e2f5 | 519 | AliTPythia8::Instance()->ReadString("4122:onMode = off"); |
520 | AliTPythia8::Instance()->ReadString("4122:onIfAll = 13"); | |
ad720100 | 521 | // Sigma_c -> mu X |
b584e2f5 | 522 | AliTPythia8::Instance()->ReadString("4132:onMode = off"); |
523 | AliTPythia8::Instance()->ReadString("4132:onIfAll = 13"); | |
ad720100 | 524 | // Sigma_c -> mu X |
b584e2f5 | 525 | AliTPythia8::Instance()->ReadString("4232:onMode = off"); |
526 | AliTPythia8::Instance()->ReadString("4232:onIfAll = 13"); | |
ad720100 | 527 | // Omega_c -> mu X |
b584e2f5 | 528 | AliTPythia8::Instance()->ReadString("4332:onMode = off"); |
529 | AliTPythia8::Instance()->ReadString("4332:onIfAll = 13"); | |
948d10f4 | 530 | break; |
531 | case kZDiMuon: | |
ad720100 | 532 | // Z -> mu+ mu- |
b584e2f5 | 533 | AliTPythia8::Instance()->ReadString("23:onMode = off"); |
534 | AliTPythia8::Instance()->ReadString("23:onIfAll = 13 13"); | |
948d10f4 | 535 | break; |
536 | case kZDiElectron: | |
ad720100 | 537 | // Z -> e+ e- |
b584e2f5 | 538 | AliTPythia8::Instance()->ReadString("23:onMode = off"); |
539 | AliTPythia8::Instance()->ReadString("23:onIfAll = 11 11"); | |
948d10f4 | 540 | break; |
541 | case kHadronicD: | |
542 | ForceHadronicD(1); | |
543 | break; | |
544 | case kHadronicDWithout4Bodies: | |
545 | ForceHadronicD(0); | |
546 | break; | |
547 | case kPhiKK: | |
ad720100 | 548 | // Phi-> K+ K- |
b584e2f5 | 549 | AliTPythia8::Instance()->ReadString("333:onMode = off"); |
550 | AliTPythia8::Instance()->ReadString("333:onIfAll = 321 321"); | |
948d10f4 | 551 | break; |
552 | case kOmega: | |
ad720100 | 553 | // Omega -> Lambda K |
b584e2f5 | 554 | AliTPythia8::Instance()->ReadString("3334:onMode = off"); |
555 | AliTPythia8::Instance()->ReadString("3334:onIfAll = 3122 321 "); | |
d3553100 | 556 | case kLambda: |
557 | // Lambda -> p pi- | |
b584e2f5 | 558 | AliTPythia8::Instance()->ReadString("3122:onMode = off"); |
559 | AliTPythia8::Instance()->ReadString("3122:onIfAll = 2212 211 "); | |
948d10f4 | 560 | case kAll: |
561 | break; | |
562 | case kNoDecay: | |
b584e2f5 | 563 | AliTPythia8::Instance()->ReadString("HadronLevel:Decay = off"); |
948d10f4 | 564 | break; |
565 | case kNoDecayHeavy: | |
1fefb2d4 | 566 | case kNoDecayBeauty: |
948d10f4 | 567 | case kNeutralPion: |
9610308a | 568 | case kPsiPrimeJpsiDiElectron: |
948d10f4 | 569 | break; |
570 | } | |
571 | } | |
572 | ||
573 | Float_t AliDecayerPythia8::GetPartialBranchingRatio(Int_t ipart) | |
574 | { | |
575 | // Get the partial branching ration for the forced decay channels | |
576 | ||
b584e2f5 | 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(); | |
948d10f4 | 582 | Float_t br = 0.; |
583 | // | |
584 | // Loop over decay channels | |
585 | for (Int_t ic = 0; ic < nc; ic++) { | |
b584e2f5 | 586 | Pythia8::DecayChannel& decCh = pd->channel(ic); |
b7227478 | 587 | for (Int_t i = 0; i < decCh.multiplicity(); i++) { |
948d10f4 | 588 | br += decCh.bRatio(); |
589 | } | |
590 | } | |
591 | return (br); | |
592 | } | |
593 | ||
594 | ||
948d10f4 | 595 | Float_t AliDecayerPythia8::GetLifetime(Int_t kf) |
596 | { | |
597 | // Return lifetime of particle | |
b584e2f5 | 598 | Pythia8::Pythia* thePythia = AliTPythia8::Instance()->Pythia8(); |
599 | Pythia8::ParticleData& table = thePythia->particleData; | |
948d10f4 | 600 | Float_t tau = table.tau0(kf); |
b584e2f5 | 601 | return (tau); |
948d10f4 | 602 | } |
603 | ||
604 | void AliDecayerPythia8::SwitchOffHeavyFlavour() | |
605 | { | |
606 | // Switch off heavy flavour production | |
607 | // | |
608 | // Maximum number of quark flavours used in pdf | |
b584e2f5 | 609 | AliTPythia8::Instance()->ReadString("PDFinProcess:nQuarkIn = 3"); |
948d10f4 | 610 | // Maximum number of flavors that can be used in showers |
b584e2f5 | 611 | AliTPythia8::Instance()->ReadString("SpaceShower:nQuarkIn = 3"); |
612 | AliTPythia8::Instance()->ReadString("TimeShower:nGammaToQuark = 3"); | |
613 | AliTPythia8::Instance()->ReadString("TimeShower:nGluonToQuark = 3"); | |
948d10f4 | 614 | } |
615 | ||
616 | ||
617 | void AliDecayerPythia8::ForceHadronicD(Int_t optUse4Bodies) | |
618 | { | |
619 | // | |
620 | // Force golden D decay modes | |
621 | // | |
ad720100 | 622 | // K* -> K pi |
b584e2f5 | 623 | AliTPythia8::Instance()->ReadString("313:onMode = off"); |
624 | AliTPythia8::Instance()->ReadString("313:onIfAll = 321 211"); | |
948d10f4 | 625 | // for Ds -> Phi pi+ |
b584e2f5 | 626 | AliTPythia8::Instance()->ReadString("333:onMode = off"); |
627 | AliTPythia8::Instance()->ReadString("333:onIfAll = 321 321"); | |
948d10f4 | 628 | // for D0 -> rho0 pi+ k- |
b584e2f5 | 629 | AliTPythia8::Instance()->ReadString("113:onMode = off"); |
630 | AliTPythia8::Instance()->ReadString("113:onIfAll = 211 211"); | |
948d10f4 | 631 | // for Lambda_c -> Delta++ K- |
b584e2f5 | 632 | AliTPythia8::Instance()->ReadString("2224:onMode = off"); |
633 | AliTPythia8::Instance()->ReadString("2224:onIfAll = 2212 211"); | |
00a8ca0b | 634 | // for Lambda_c -> Lambda(1520) K- |
b584e2f5 | 635 | AliTPythia8::Instance()->ReadString("3124:onMode = off"); |
636 | AliTPythia8::Instance()->ReadString("3124:onIfAll = 2212 321"); | |
948d10f4 | 637 | |
638 | ||
b584e2f5 | 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"); | |
b7227478 | 644 | |
ad720100 | 645 | // D+/- -> K pi pi |
b584e2f5 | 646 | AliTPythia8::Instance()->ReadString("411:onIfMatch = 321 211 211"); |
d3553100 | 647 | // D+/- -> K* pi |
b584e2f5 | 648 | AliTPythia8::Instance()->ReadString("411:onIfMatch = 313 211"); |
00a8ca0b | 649 | // D0 -> K pi |
b584e2f5 | 650 | AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211"); |
ad720100 | 651 | |
b7227478 | 652 | if (optUse4Bodies) { |
ad720100 | 653 | // D0 -> K pi pi pi |
b584e2f5 | 654 | AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211 211 211"); |
ad720100 | 655 | // D0 -> K pi rho |
b584e2f5 | 656 | AliTPythia8::Instance()->ReadString("421:onIfMatch = 321 211 113"); |
00a8ca0b | 657 | // D0 -> K*0 pi pi |
b584e2f5 | 658 | AliTPythia8::Instance()->ReadString("421:onIfMatch = 313 211 211"); |
b7227478 | 659 | } |
948d10f4 | 660 | |
ad720100 | 661 | // D_s -> K K* |
b584e2f5 | 662 | AliTPythia8::Instance()->ReadString("431:onIfMatch = 321 313"); |
ad720100 | 663 | // D_s -> Phi pi |
b584e2f5 | 664 | AliTPythia8::Instance()->ReadString("431:onIfMatch = 333 211"); |
b7227478 | 665 | |
ad720100 | 666 | // Lambda_c -> p K* |
b584e2f5 | 667 | AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2212 313"); |
ad720100 | 668 | // Lambda_c -> Delta K |
b584e2f5 | 669 | AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2224 321"); |
00a8ca0b | 670 | // Lambda_c -> Lambda(1520) pi |
b584e2f5 | 671 | AliTPythia8::Instance()->ReadString("4122:onIfMatch = 3124 211"); |
ad720100 | 672 | // Lambda_c -> p K pi |
b584e2f5 | 673 | AliTPythia8::Instance()->ReadString("4122:onIfMatch = 2212 321 211"); |
00a8ca0b | 674 | // Lambda_c -> Lambda pi |
b584e2f5 | 675 | AliTPythia8::Instance()->ReadString("4122:onIfMatch = 3122 211"); |
b7227478 | 676 | |
948d10f4 | 677 | } |
678 | ||
b584e2f5 | 679 | //___________________________________________________________________________ |
680 | void AliDecayerPythia8::ReadDecayTable() | |
681 | { | |
682 | //to read a decay table (not yet implemented) | |
683 | } | |
684 | ||
685 | ||
686 | //___________________________________________________________________________ | |
687 | void 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 | //___________________________________________________________________________ | |
695 | void AliDecayerPythia8::ClearEvent() | |
696 | { | |
697 | // Clear the event stack | |
698 | fPythia8->Pythia8()->event.clear(); | |
699 | } | |
700 |