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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 | $Log$ | |
b80a8e41 | 18 | Revision 1.2 2001/10/15 08:15:51 morsch |
19 | Event vertex and vertex truncation setting moved into AliMC. | |
20 | ||
dba8ac91 | 21 | Revision 1.1 2001/07/13 10:56:00 morsch |
22 | AliGenMC base class for AliGenParam and AliGenPythia commonalities. | |
23 | ||
e36044d6 | 24 | */ |
25 | ||
26 | #include "AliGenMC.h" | |
27 | #include "AliPDG.h" | |
28 | #include <TParticle.h> | |
29 | ||
30 | ClassImp(AliGenMC) | |
31 | ||
32 | AliGenMC::AliGenMC() | |
33 | :AliGenerator() | |
34 | { | |
35 | // Default Constructor | |
36 | SetCutOnChild(); | |
37 | SetChildMomentumRange(); | |
38 | SetChildPtRange(); | |
39 | SetChildPhiRange(); | |
40 | SetChildThetaRange(); | |
41 | SetChildYRange(); | |
42 | } | |
43 | ||
44 | AliGenMC::AliGenMC(Int_t npart) | |
45 | :AliGenerator(npart) | |
46 | { | |
47 | // Constructor | |
48 | SetCutOnChild(); | |
49 | SetChildMomentumRange(); | |
50 | SetChildPtRange(); | |
51 | SetChildPhiRange(); | |
52 | SetChildThetaRange(); | |
53 | SetChildYRange(); | |
54 | // | |
55 | fParentSelect.Set(8); | |
56 | fChildSelect.Set(8); | |
57 | for (Int_t i=0; i<8; i++) fParentSelect[i]=fChildSelect[i]=0; | |
dba8ac91 | 58 | |
e36044d6 | 59 | } |
60 | ||
61 | AliGenMC::AliGenMC(const AliGenMC & mc) | |
62 | { | |
63 | // copy constructor | |
64 | } | |
65 | ||
66 | AliGenMC::~AliGenMC() | |
67 | { | |
68 | // Destructor | |
69 | } | |
70 | ||
71 | void AliGenMC::Init() | |
72 | { | |
73 | // | |
74 | // Initialization | |
75 | switch (fForceDecay) { | |
76 | case kSemiElectronic: | |
77 | case kDiElectron: | |
78 | case kBJpsiDiElectron: | |
79 | case kBPsiPrimeDiElectron: | |
80 | fChildSelect[0]=kElectron; | |
81 | break; | |
82 | case kSemiMuonic: | |
83 | case kDiMuon: | |
84 | case kBJpsiDiMuon: | |
85 | case kBPsiPrimeDiMuon: | |
86 | case kPiToMu: | |
87 | case kKaToMu: | |
88 | fChildSelect[0]=kMuonMinus; | |
89 | break; | |
90 | case kHadronicD: | |
91 | fChildSelect[0]=kPiPlus; | |
92 | fChildSelect[1]=kKPlus; | |
93 | break; | |
94 | case kAll: | |
95 | case kNoDecay: | |
96 | break; | |
97 | } | |
98 | } | |
99 | ||
100 | ||
101 | Bool_t AliGenMC::ParentSelected(Int_t ip) | |
102 | { | |
103 | // True if particle is in list of parent particles to be selected | |
104 | for (Int_t i=0; i<8; i++) | |
105 | { | |
106 | if (fParentSelect[i]==ip) return kTRUE; | |
107 | } | |
108 | return kFALSE; | |
109 | } | |
110 | ||
111 | Bool_t AliGenMC::ChildSelected(Int_t ip) | |
112 | { | |
113 | // True if particle is in list of decay products to be selected | |
114 | for (Int_t i=0; i<5; i++) | |
115 | { | |
116 | if (fChildSelect[i]==ip) return kTRUE; | |
117 | } | |
118 | return kFALSE; | |
119 | } | |
120 | ||
121 | Bool_t AliGenMC::KinematicSelection(TParticle *particle, Int_t flag) | |
122 | { | |
123 | // Perform kinematic selection | |
124 | Float_t px = particle->Px(); | |
125 | Float_t py = particle->Py(); | |
126 | Float_t pz = particle->Pz(); | |
127 | Float_t e = particle->Energy(); | |
128 | Float_t pt = particle->Pt(); | |
129 | Float_t p = particle->P(); | |
130 | Float_t theta = particle->Theta(); | |
131 | Float_t phi = Float_t(TMath::ATan2(Double_t(py),Double_t(px))); | |
132 | Float_t y; | |
133 | ||
134 | if ( (e-pz)<=0 || (e+pz)<=0 ) { | |
135 | return kFALSE; | |
136 | } else { | |
137 | y = 0.5*TMath::Log((e+pz)/(e-pz)); | |
138 | } | |
139 | ||
140 | if (flag == 0) { | |
141 | // | |
142 | // Primary particle cuts | |
143 | // | |
144 | // transverse momentum cut | |
145 | if (pt > fPtMax || pt < fPtMin) { | |
146 | // printf("\n failed pt cut %f %f %f \n",pt,fPtMin,fPtMax); | |
147 | return kFALSE; | |
148 | } | |
149 | // | |
150 | // momentum cut | |
151 | if (p > fPMax || p < fPMin) { | |
152 | // printf("\n failed p cut %f %f %f \n",p,fPMin,fPMax); | |
153 | return kFALSE; | |
154 | } | |
155 | // | |
156 | // theta cut | |
157 | if (theta > fThetaMax || theta < fThetaMin) { | |
158 | // printf("\n failed theta cut %f %f %f \n",theta,fThetaMin,fThetaMax); | |
159 | return kFALSE; | |
160 | } | |
161 | // | |
162 | // rapidity cut | |
163 | if (y > fYMax || y < fYMin) { | |
164 | // printf("\n failed y cut %f %f %f \n",y,fYMin,fYMax); | |
165 | return kFALSE; | |
166 | } | |
167 | // | |
168 | // phi cut | |
169 | if (phi > fPhiMax || phi < fPhiMin) { | |
170 | // printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax); | |
171 | return kFALSE; | |
172 | } | |
173 | } else { | |
174 | // | |
175 | // Decay product cuts | |
176 | // | |
177 | // transverse momentum cut | |
178 | if (pt > fChildPtMax || pt < fChildPtMin) { | |
179 | // printf("\n failed pt cut %f %f %f \n",pt,fChildPtMin,fChildPtMax); | |
180 | return kFALSE; | |
181 | } | |
182 | // | |
183 | // momentum cut | |
184 | if (p > fChildPMax || p < fChildPMin) { | |
185 | // printf("\n failed p cut %f %f %f \n",p,fChildPMin,fChildPMax); | |
186 | return kFALSE; | |
187 | } | |
188 | // | |
189 | // theta cut | |
190 | if (theta > fChildThetaMax || theta < fChildThetaMin) { | |
191 | // printf("\n failed theta cut %f %f %f \n",theta,fChildThetaMin,fChildThetaMax); | |
192 | return kFALSE; | |
193 | } | |
194 | // | |
195 | // rapidity cut | |
196 | if (y > fChildYMax || y < fChildYMin) { | |
197 | // printf("\n failed y cut %f %f %f \n",y,fChildYMin,fChildYMax); | |
198 | return kFALSE; | |
199 | } | |
200 | // | |
201 | // phi cut | |
202 | if (phi > fChildPhiMax || phi < fChildPhiMin) { | |
203 | // printf("\n failed phi cut %f %f %f \n",phi,fChildPhiMin,fChildPhiMax); | |
204 | return kFALSE; | |
205 | } | |
206 | } | |
207 | ||
208 | ||
209 | ||
210 | return kTRUE; | |
211 | } | |
212 | ||
213 | Int_t AliGenMC::CheckPDGCode(Int_t pdgcode) | |
214 | { | |
215 | // | |
216 | // If the particle is in a diffractive state, then take action accordingly | |
217 | switch (pdgcode) { | |
218 | case 91: | |
219 | return 92; | |
220 | case 110: | |
221 | //rho_diff0 -- difficult to translate, return rho0 | |
222 | return 113; | |
223 | case 210: | |
224 | //pi_diffr+ -- change to pi+ | |
225 | return 211; | |
226 | case 220: | |
227 | //omega_di0 -- change to omega0 | |
228 | return 223; | |
229 | case 330: | |
230 | //phi_diff0 -- return phi0 | |
231 | return 333; | |
232 | case 440: | |
233 | //J/psi_di0 -- return J/psi | |
234 | return 443; | |
235 | case 2110: | |
236 | //n_diffr -- return neutron | |
237 | return 2112; | |
238 | case 2210: | |
239 | //p_diffr+ -- return proton | |
240 | return 2212; | |
241 | } | |
242 | //non diffractive state -- return code unchanged | |
243 | return pdgcode; | |
244 | } | |
245 | ||
246 | AliGenMC& AliGenMC::operator=(const AliGenMC& rhs) | |
247 | { | |
248 | // Assignment operator | |
249 | return *this; | |
250 | } | |
251 |