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e36044d6 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
47fc6bd5 | 18 | Revision 1.3 2001/10/16 08:48:56 morsch |
19 | Common vertex related code moved to base class AliGenerator. | |
20 | ||
b80a8e41 | 21 | Revision 1.2 2001/10/15 08:15:51 morsch |
22 | Event vertex and vertex truncation setting moved into AliMC. | |
23 | ||
dba8ac91 | 24 | Revision 1.1 2001/07/13 10:56:00 morsch |
25 | AliGenMC base class for AliGenParam and AliGenPythia commonalities. | |
26 | ||
e36044d6 | 27 | */ |
28 | ||
29 | #include "AliGenMC.h" | |
30 | #include "AliPDG.h" | |
31 | #include <TParticle.h> | |
32 | ||
33 | ClassImp(AliGenMC) | |
34 | ||
35 | AliGenMC::AliGenMC() | |
36 | :AliGenerator() | |
37 | { | |
38 | // Default Constructor | |
39 | SetCutOnChild(); | |
40 | SetChildMomentumRange(); | |
41 | SetChildPtRange(); | |
42 | SetChildPhiRange(); | |
43 | SetChildThetaRange(); | |
44 | SetChildYRange(); | |
47fc6bd5 | 45 | SetMaximumLifetime(); |
e36044d6 | 46 | } |
47 | ||
48 | AliGenMC::AliGenMC(Int_t npart) | |
49 | :AliGenerator(npart) | |
50 | { | |
51 | // Constructor | |
52 | SetCutOnChild(); | |
53 | SetChildMomentumRange(); | |
54 | SetChildPtRange(); | |
55 | SetChildPhiRange(); | |
56 | SetChildThetaRange(); | |
57 | SetChildYRange(); | |
58 | // | |
59 | fParentSelect.Set(8); | |
60 | fChildSelect.Set(8); | |
61 | for (Int_t i=0; i<8; i++) fParentSelect[i]=fChildSelect[i]=0; | |
47fc6bd5 | 62 | SetMaximumLifetime(); |
e36044d6 | 63 | } |
64 | ||
65 | AliGenMC::AliGenMC(const AliGenMC & mc) | |
66 | { | |
67 | // copy constructor | |
68 | } | |
69 | ||
70 | AliGenMC::~AliGenMC() | |
71 | { | |
72 | // Destructor | |
73 | } | |
74 | ||
75 | void AliGenMC::Init() | |
76 | { | |
77 | // | |
78 | // Initialization | |
79 | switch (fForceDecay) { | |
80 | case kSemiElectronic: | |
81 | case kDiElectron: | |
82 | case kBJpsiDiElectron: | |
83 | case kBPsiPrimeDiElectron: | |
47fc6bd5 | 84 | fChildSelect[0] = kElectron; |
e36044d6 | 85 | break; |
86 | case kSemiMuonic: | |
87 | case kDiMuon: | |
88 | case kBJpsiDiMuon: | |
89 | case kBPsiPrimeDiMuon: | |
90 | case kPiToMu: | |
91 | case kKaToMu: | |
92 | fChildSelect[0]=kMuonMinus; | |
93 | break; | |
94 | case kHadronicD: | |
95 | fChildSelect[0]=kPiPlus; | |
96 | fChildSelect[1]=kKPlus; | |
97 | break; | |
98 | case kAll: | |
99 | case kNoDecay: | |
100 | break; | |
101 | } | |
102 | } | |
103 | ||
104 | ||
105 | Bool_t AliGenMC::ParentSelected(Int_t ip) | |
106 | { | |
107 | // True if particle is in list of parent particles to be selected | |
108 | for (Int_t i=0; i<8; i++) | |
109 | { | |
110 | if (fParentSelect[i]==ip) return kTRUE; | |
111 | } | |
112 | return kFALSE; | |
113 | } | |
114 | ||
115 | Bool_t AliGenMC::ChildSelected(Int_t ip) | |
116 | { | |
117 | // True if particle is in list of decay products to be selected | |
118 | for (Int_t i=0; i<5; i++) | |
119 | { | |
120 | if (fChildSelect[i]==ip) return kTRUE; | |
121 | } | |
122 | return kFALSE; | |
123 | } | |
124 | ||
125 | Bool_t AliGenMC::KinematicSelection(TParticle *particle, Int_t flag) | |
126 | { | |
127 | // Perform kinematic selection | |
128 | Float_t px = particle->Px(); | |
129 | Float_t py = particle->Py(); | |
130 | Float_t pz = particle->Pz(); | |
131 | Float_t e = particle->Energy(); | |
132 | Float_t pt = particle->Pt(); | |
133 | Float_t p = particle->P(); | |
134 | Float_t theta = particle->Theta(); | |
135 | Float_t phi = Float_t(TMath::ATan2(Double_t(py),Double_t(px))); | |
136 | Float_t y; | |
137 | ||
138 | if ( (e-pz)<=0 || (e+pz)<=0 ) { | |
139 | return kFALSE; | |
140 | } else { | |
141 | y = 0.5*TMath::Log((e+pz)/(e-pz)); | |
142 | } | |
143 | ||
144 | if (flag == 0) { | |
145 | // | |
146 | // Primary particle cuts | |
147 | // | |
148 | // transverse momentum cut | |
149 | if (pt > fPtMax || pt < fPtMin) { | |
150 | // printf("\n failed pt cut %f %f %f \n",pt,fPtMin,fPtMax); | |
151 | return kFALSE; | |
152 | } | |
153 | // | |
154 | // momentum cut | |
155 | if (p > fPMax || p < fPMin) { | |
156 | // printf("\n failed p cut %f %f %f \n",p,fPMin,fPMax); | |
157 | return kFALSE; | |
158 | } | |
159 | // | |
160 | // theta cut | |
161 | if (theta > fThetaMax || theta < fThetaMin) { | |
162 | // printf("\n failed theta cut %f %f %f \n",theta,fThetaMin,fThetaMax); | |
163 | return kFALSE; | |
164 | } | |
165 | // | |
166 | // rapidity cut | |
167 | if (y > fYMax || y < fYMin) { | |
168 | // printf("\n failed y cut %f %f %f \n",y,fYMin,fYMax); | |
169 | return kFALSE; | |
170 | } | |
171 | // | |
172 | // phi cut | |
173 | if (phi > fPhiMax || phi < fPhiMin) { | |
174 | // printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax); | |
175 | return kFALSE; | |
176 | } | |
177 | } else { | |
178 | // | |
179 | // Decay product cuts | |
180 | // | |
181 | // transverse momentum cut | |
182 | if (pt > fChildPtMax || pt < fChildPtMin) { | |
183 | // printf("\n failed pt cut %f %f %f \n",pt,fChildPtMin,fChildPtMax); | |
184 | return kFALSE; | |
185 | } | |
186 | // | |
187 | // momentum cut | |
188 | if (p > fChildPMax || p < fChildPMin) { | |
189 | // printf("\n failed p cut %f %f %f \n",p,fChildPMin,fChildPMax); | |
190 | return kFALSE; | |
191 | } | |
192 | // | |
193 | // theta cut | |
194 | if (theta > fChildThetaMax || theta < fChildThetaMin) { | |
195 | // printf("\n failed theta cut %f %f %f \n",theta,fChildThetaMin,fChildThetaMax); | |
196 | return kFALSE; | |
197 | } | |
198 | // | |
199 | // rapidity cut | |
200 | if (y > fChildYMax || y < fChildYMin) { | |
201 | // printf("\n failed y cut %f %f %f \n",y,fChildYMin,fChildYMax); | |
202 | return kFALSE; | |
203 | } | |
204 | // | |
205 | // phi cut | |
206 | if (phi > fChildPhiMax || phi < fChildPhiMin) { | |
207 | // printf("\n failed phi cut %f %f %f \n",phi,fChildPhiMin,fChildPhiMax); | |
208 | return kFALSE; | |
209 | } | |
210 | } | |
211 | ||
212 | ||
213 | ||
214 | return kTRUE; | |
215 | } | |
216 | ||
217 | Int_t AliGenMC::CheckPDGCode(Int_t pdgcode) | |
218 | { | |
219 | // | |
220 | // If the particle is in a diffractive state, then take action accordingly | |
221 | switch (pdgcode) { | |
222 | case 91: | |
223 | return 92; | |
224 | case 110: | |
225 | //rho_diff0 -- difficult to translate, return rho0 | |
226 | return 113; | |
227 | case 210: | |
228 | //pi_diffr+ -- change to pi+ | |
229 | return 211; | |
230 | case 220: | |
231 | //omega_di0 -- change to omega0 | |
232 | return 223; | |
233 | case 330: | |
234 | //phi_diff0 -- return phi0 | |
235 | return 333; | |
236 | case 440: | |
237 | //J/psi_di0 -- return J/psi | |
238 | return 443; | |
239 | case 2110: | |
240 | //n_diffr -- return neutron | |
241 | return 2112; | |
242 | case 2210: | |
243 | //p_diffr+ -- return proton | |
244 | return 2212; | |
245 | } | |
246 | //non diffractive state -- return code unchanged | |
247 | return pdgcode; | |
248 | } | |
249 | ||
250 | AliGenMC& AliGenMC::operator=(const AliGenMC& rhs) | |
251 | { | |
252 | // Assignment operator | |
253 | return *this; | |
254 | } | |
255 |