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