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 | |