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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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4 // * 4 // * *
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10 // * 10 // * *
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13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
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19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
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23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
>> 26 // $Id: Pythia6.cc,v 1.1 2008/11/03 11:48:35 gcosmo Exp $
>> 27 // GEANT4 tag $Name: geant4-09-02 $
26 // 28 //
27 /// \file eventgenerator/pythia/decayer6/src/P <<
28 /// \brief Implementation of the Pythia6 class <<
29 <<
30 // ------------------------------------------- <<
31 // According to TPythia6 class from Root: 29 // According to TPythia6 class from Root:
32 // (The TPythia6 class is an interface class t 30 // (The TPythia6 class is an interface class to F77 routines in Pythia6 //
33 // CERNLIB event generators, written by T.Sjos << 31 // CERNLIB event generators, written by T.Sjostrand.)
34 // http://root.cern.ch/ 32 // http://root.cern.ch/
35 // see http://root.cern.ch/root/License.html 33 // see http://root.cern.ch/root/License.html
36 // 34 //
37 // The complete Pythia6 documentation can be f 35 // The complete Pythia6 documentation can be found at:
38 // http://home.thep.lu.se/~torbjorn/pythiaaux/ 36 // http://home.thep.lu.se/~torbjorn/pythiaaux/recent.html
39 // ------------------------------------------- 37 // ----------------------------------------------------------------------------
40 38
41 // ******************************************* 39 // ******************************************************************************
42 // ******************************************* 40 // ******************************************************************************
43 // ** 41 // ** **
44 // ** 42 // ** **
45 // ** *......* W 43 // ** *......* Welcome to the Lund Monte Carlo! **
46 // ** *:::!!:::::::::::* 44 // ** *:::!!:::::::::::* **
47 // ** *::::::!!::::::::::::::* P 45 // ** *::::::!!::::::::::::::* PPP Y Y TTTTT H H III A **
48 // ** *::::::::!!::::::::::::::::* P 46 // ** *::::::::!!::::::::::::::::* P P Y Y T H H I A A **
49 // ** *:::::::::!!:::::::::::::::::* P 47 // ** *:::::::::!!:::::::::::::::::* PPP Y T HHHHH I AAAAA **
50 // ** *:::::::::!!:::::::::::::::::* P 48 // ** *:::::::::!!:::::::::::::::::* P Y T H H I A A **
51 // ** *::::::::!!::::::::::::::::*! P 49 // ** *::::::::!!::::::::::::::::*! P Y T H H III A A **
52 // ** *::::::!!::::::::::::::* !! 50 // ** *::::::!!::::::::::::::* !! **
53 // ** !! *:::!!:::::::::::* !! T 51 // ** !! *:::!!:::::::::::* !! This is PYTHIA version 6.418 **
54 // ** !! !* -><- * !! L 52 // ** !! !* -><- * !! Last date of change: 9 Jun 2008 **
55 // ** !! !! !! 53 // ** !! !! !! **
56 // ** !! !! !! N 54 // ** !! !! !! Now is 0 Jan 2000 at 0:00:00 **
57 // ** !! !! 55 // ** !! !! **
58 // ** !! lh !! D 56 // ** !! lh !! Disclaimer: this program comes **
59 // ** !! !! w 57 // ** !! !! without any guarantees. Beware **
60 // ** !! hh !! o 58 // ** !! hh !! of errors and use common sense **
61 // ** !! ll !! w 59 // ** !! ll !! when interpreting results. **
62 // ** !! !! 60 // ** !! !! **
63 // ** !! C 61 // ** !! Copyright T. Sjostrand (2008) **
64 // ** 62 // ** **
65 // ** An archive of program versions and docum 63 // ** An archive of program versions and documentation is found on the web: **
66 // ** http://www.thep.lu.se/~torbjorn/Pythia.h 64 // ** http://www.thep.lu.se/~torbjorn/Pythia.html **
67 // ** 65 // ** **
68 // ** When you cite this program, the official 66 // ** When you cite this program, the official reference is to the 6.4 manual: **
69 // ** T. Sjostrand, S. Mrenna and P. Skands, J 67 // ** T. Sjostrand, S. Mrenna and P. Skands, JHEP05 (2006) 026 **
70 // ** (LU TP 06-13, FERMILAB-PUB-06-052-CD-T) 68 // ** (LU TP 06-13, FERMILAB-PUB-06-052-CD-T) [hep-ph/0603175]. **
71 // ** 69 // ** **
72 // ** Also remember that the program, to a lar 70 // ** Also remember that the program, to a large extent, represents original **
73 // ** physics research. Other publications of 71 // ** physics research. Other publications of special relevance to your **
74 // ** studies may therefore deserve separate m 72 // ** studies may therefore deserve separate mention. **
75 // ** 73 // ** **
76 // ** Main author: Torbjorn Sjostrand; Departm 74 // ** Main author: Torbjorn Sjostrand; Department of Theoretical Physics, **
77 // ** Lund University, Solvegatan 14A, S-223 75 // ** Lund University, Solvegatan 14A, S-223 62 Lund, Sweden; **
78 // ** phone: + 46 - 46 - 222 48 16; e-mail: 76 // ** phone: + 46 - 46 - 222 48 16; e-mail: torbjorn@thep.lu.se **
79 // ** Author: Stephen Mrenna; Computing Divisi 77 // ** Author: Stephen Mrenna; Computing Division, GDS Group, **
80 // ** Fermi National Accelerator Laboratory, 78 // ** Fermi National Accelerator Laboratory, MS 234, Batavia, IL 60510, USA; **
81 // ** phone: + 1 - 630 - 840 - 2556; e-mail: 79 // ** phone: + 1 - 630 - 840 - 2556; e-mail: mrenna@fnal.gov **
82 // ** Author: Peter Skands; Theoretical Physic 80 // ** Author: Peter Skands; Theoretical Physics Department, **
83 // ** Fermi National Accelerator Laboratory, 81 // ** Fermi National Accelerator Laboratory, MS 106, Batavia, IL 60510, USA; **
84 // ** and CERN/PH, CH-1211 Geneva, Switzerla 82 // ** and CERN/PH, CH-1211 Geneva, Switzerland; **
85 // ** phone: + 41 - 22 - 767 24 59; e-mail: 83 // ** phone: + 41 - 22 - 767 24 59; e-mail: skands@fnal.gov **
86 // ** 84 // ** **
87 // ** 85 // ** **
88 // ******************************************* 86 // ******************************************************************************
89 87
90 #include "Pythia6.hh" 88 #include "Pythia6.hh"
91 89
92 #include <cstdlib> <<
93 #include <cstring> <<
94 #include <iostream> 90 #include <iostream>
95 91
96 #ifndef WIN32 92 #ifndef WIN32
97 # define pycomp pycomp_ << 93 # define pycomp pycomp_
98 # define py1ent py1ent_ << 94 # define py1ent py1ent_
99 # define type_of_call << 95 # define type_of_call
100 #else 96 #else
101 # define pycomp PYCOMP << 97 # define pycomp PYCOMP
102 # define py1ent PY1ENT << 98 # define py1ent PY1ENT
103 # define type_of_call _stdcall << 99 # define type_of_call _stdcall
104 #endif 100 #endif
105 101
106 // pythia6 functions << 102 extern "C" {
107 extern "C" << 103 int type_of_call pycomp(int *kf);
108 { <<
109 int type_of_call pycomp(int* kf); <<
110 void type_of_call py1ent(int&, int&, double& 104 void type_of_call py1ent(int&, int&, double&, double&, double&);
111 void* pythia6_common_address(const char*); << 105 void* pythia6_common_address(const char*);
112 } 106 }
113 107
114 // Direct declaration of pythia6 common blocks << 108 Pythia6* Pythia6::fgInstance = 0;
115 // extern "C" { <<
116 // extern Pyjets_t pyjets_; <<
117 // extern Pydat1_t pydat1_; <<
118 // extern Pydat3_t pydat3_; <<
119 // } <<
120 <<
121 Pythia6* Pythia6::fgInstance = 0; <<
122 109
123 //....oooOO0OOooo........oooOO0OOooo........oo << 110 //______________________________________________________________________________
124 << 111 Pythia6* Pythia6::Instance()
125 Pythia6* Pythia6::Instance() <<
126 { 112 {
127 /// Static access method << 113 /// Static access method
128 114
129 if (!fgInstance) fgInstance = new Pythia6(); << 115 if ( ! fgInstance ) fgInstance = new Pythia6();
130 116
131 return fgInstance; << 117 return fgInstance;
132 } 118 }
133 119
134 //....oooOO0OOooo........oooOO0OOooo........oo <<
135 120
136 Pythia6::Pythia6() : fParticles(0), fPyjets(0) << 121 //______________________________________________________________________________
>> 122 Pythia6::Pythia6()
>> 123 : fParticles(0)
137 { 124 {
138 /// Pythia6 constructor: creates a vector of << 125 /// Pythia6 constructor: creates a vector of Pythia6Particle in which it will store all
139 /// store all particles. Note that there may << 126 /// particles. Note that there may be only one functional Pythia6 object
140 /// object at a time, so it's not use to cre << 127 /// at a time, so it's not use to create more than one instance of it.
141 << 128
142 // Protect against multiple objects. All a << 129 // Protect against multiple objects. All access should be via the
143 // Instance member function. << 130 // Instance member function.
144 if (fgInstance) { << 131 if ( fgInstance ) {
145 std::cerr << "There's already an instance << 132 std::cerr << "There's already an instance of Pythia6" << std::endl;
146 exit(1); << 133 exit (1);
147 } << 134 }
148 << 135
149 fParticles = new ParticleVector(); << 136 fParticles = new ParticleVector();
150 137
151 // Initialize common-blocks << 138 // initialize common-blocks
152 fPyjets = (Pyjets_t*)pythia6_common_address( << 139 fPyjets = (Pyjets_t*) pythia6_common_address("PYJETS");
153 fPydat1 = (Pydat1_t*)pythia6_common_address( << 140 fPydat1 = (Pydat1_t*) pythia6_common_address("PYDAT1");
154 fPydat3 = (Pydat3_t*)pythia6_common_address( << 141 fPydat3 = (Pydat3_t*) pythia6_common_address("PYDAT3");
155 <<
156 // Alternative way to initialize common-bloc <<
157 // usind direct declaration of pythia6 commo <<
158 // fPyjets = &pyjets_; <<
159 // fPydat1 = &pydat1_; <<
160 // fPydat3 = &pydat3_; <<
161 } 142 }
162 143
163 //....oooOO0OOooo........oooOO0OOooo........oo << 144 //______________________________________________________________________________
164 <<
165 Pythia6::~Pythia6() 145 Pythia6::~Pythia6()
166 { 146 {
167 /// Destroy the object, delete and dispose a << 147 /// Destroy the object, delete and dispose all Pythia6Particles currently on list.
168 /// list. <<
169 148
170 if (fParticles) { << 149 if ( fParticles ) {
171 ParticleVector::const_iterator it; << 150 ParticleVector::const_iterator it;
172 for (it = fParticles->begin(); it != fPart << 151 for ( it = fParticles->begin(); it != fParticles->end(); it++ )
173 delete *it; << 152 delete *it;
174 delete fParticles; << 153 delete fParticles;
175 } << 154 }
176 } 155 }
177 156
178 //....oooOO0OOooo........oooOO0OOooo........oo << 157 //______________________________________________________________________________
179 << 158 int Pythia6::Pycomp(int kf)
180 int Pythia6::Pycomp(int kf) <<
181 { 159 {
182 /// Interface with fortran routine pycomp << 160 /// Interface with fortran routine pycomp
183 161
184 return pycomp(&kf); << 162 return pycomp(&kf);
185 } 163 }
186 164
187 //....oooOO0OOooo........oooOO0OOooo........oo << 165 //______________________________________________________________________________
188 <<
189 void Pythia6::Py1ent(int ip, int kf, double pe 166 void Pythia6::Py1ent(int ip, int kf, double pe, double theta, double phi)
190 { 167 {
191 /// Add one entry to the event record, i.e. << 168 /// Add one entry to the event record, i.e. either a parton or a
192 /// particle. << 169 /// particle.
193 /// << 170 ///
194 /// IP: normally line number for the part << 171 /// IP: normally line number for the parton/particle. There are two
195 /// exceptions: << 172 /// exceptions:
196 /// << 173 ///
197 /// If IP = 0: line number 1 is used << 174 /// If IP = 0: line number 1 is used and PYEXEC is called.
198 /// If IP < 0: line -IP is used, with << 175 /// If IP < 0: line -IP is used, with status code K(-IP,2)=2
199 /// rather than 1; thus a << 176 /// rather than 1; thus a parton system may be built
200 /// up by filling all but << 177 /// up by filling all but the last parton of the
201 /// system with IP < 0. << 178 /// system with IP < 0.
202 /// KF: parton/particle flavour code (PDG << 179 /// KF: parton/particle flavour code (PDG code)
203 /// PE: parton/particle energy. If PE is << 180 /// PE: parton/particle energy. If PE is smaller than the mass,
204 /// the parton/particle is taken to b << 181 /// the parton/particle is taken to be at rest.
205 /// THETA: << 182 /// THETA:
206 /// PHI: polar and azimuthal angle for the << 183 /// PHI: polar and azimuthal angle for the momentum vector of the
207 /// parton/particle. << 184 /// parton/particle.
208 185
209 py1ent(ip, kf, pe, theta, phi); << 186 py1ent(ip, kf, pe, theta, phi);
210 } 187 }
211 188
212 //....oooOO0OOooo........oooOO0OOooo........oo << 189 //______________________________________________________________________________
213 <<
214 int Pythia6::ImportParticles(ParticleVector* p 190 int Pythia6::ImportParticles(ParticleVector* particles, const char* option)
215 { 191 {
216 /// Default primary creation method. It rea << 192 /// Default primary creation method. It reads the /HEPEVT/ common block which
217 /// has been filled by the GenerateEvent me << 193 /// has been filled by the GenerateEvent method. If the event generator does
218 /// not use the HEPEVT common block, This r << 194 /// not use the HEPEVT common block, This routine has to be overloaded by
219 /// the subclasses. << 195 /// the subclasses.
220 /// The function loops on the generated par << 196 /// The function loops on the generated particles and store them in
221 /// the TClonesArray pointed by the argumen << 197 /// the TClonesArray pointed by the argument particles.
222 /// The default action is to store only the << 198 /// The default action is to store only the stable particles (ISTHEP = 1)
223 /// This can be demanded explicitly by sett << 199 /// This can be demanded explicitly by setting the option = "Final"
224 /// If the option = "All", all the particle << 200 /// If the option = "All", all the particles are stored.
225 << 201
226 if (particles == 0) return 0; << 202 if ( particles == 0 ) return 0;
227 << 203
228 ParticleVector::const_iterator it; << 204 ParticleVector::const_iterator it;
229 for (it = particles->begin(); it != particle << 205 for ( it = particles->begin(); it != particles->end(); it++ )
230 delete *it; << 206 delete *it;
231 particles->clear(); << 207 particles->clear();
232 << 208
233 int numpart = fPyjets->N; << 209 int numpart = fPyjets->N;
234 int nparts = 0; << 210 int nparts=0;
235 if (!strcmp(option, "") || !strcmp(option, " << 211 if (!strcmp(option,"") || !strcmp(option,"Final")) {
236 for (int i = 0; i < numpart; i++) { << 212 for (int i = 0; i<numpart; i++) {
237 if (fPyjets->K[0][i] == 1) { << 213
238 // << 214 if (fPyjets->K[0][i] == 1) {
239 // Use the common block values for th << 215 //
240 // << 216 // Use the common block values for the TParticle constructor
241 particles->push_back(new Pythia6Partic << 217 //
242 fPyjets->K[0][i], fPyjets->K[1][i], << 218 particles->push_back(
243 fPyjets->P[0][i], fPyjets->P[1][i], << 219 new Pythia6Particle(
244 fPyjets->V[0][i], fPyjets->V[1][i], << 220 fPyjets->K[0][i] ,
245 fPyjets->V[4][i])); << 221 fPyjets->K[1][i] ,
246 << 222 fPyjets->K[2][i] ,
247 // if(gDebug) printf("%d %d %d! ", << 223 fPyjets->K[3][i] ,
248 nparts++; << 224 fPyjets->K[4][i] ,
>> 225 fPyjets->P[0][i] ,
>> 226 fPyjets->P[1][i] ,
>> 227 fPyjets->P[2][i] ,
>> 228 fPyjets->P[3][i] ,
>> 229 fPyjets->P[4][i] ,
>> 230 fPyjets->V[0][i] ,
>> 231 fPyjets->V[1][i] ,
>> 232 fPyjets->V[2][i] ,
>> 233 fPyjets->V[3][i] ,
>> 234 fPyjets->V[4][i]));
>> 235
>> 236 // if(gDebug) printf("%d %d %d! ",i,fPyjets->K[1][i],numpart);
>> 237 nparts++;
>> 238 }
>> 239 }
>> 240 }
>> 241 else if (!strcmp(option,"All")) {
>> 242 for (int i = 0; i<numpart; i++) {
>> 243 particles->push_back(
>> 244 new Pythia6Particle(
>> 245 fPyjets->K[0][i] ,
>> 246 fPyjets->K[1][i] ,
>> 247 fPyjets->K[2][i] ,
>> 248 fPyjets->K[3][i] ,
>> 249 fPyjets->K[4][i] ,
>> 250 fPyjets->P[0][i] ,
>> 251 fPyjets->P[1][i] ,
>> 252 fPyjets->P[2][i] ,
>> 253 fPyjets->P[3][i] ,
>> 254 fPyjets->P[4][i] ,
>> 255 fPyjets->V[0][i] ,
>> 256 fPyjets->V[1][i] ,
>> 257 fPyjets->V[2][i] ,
>> 258 fPyjets->V[3][i] ,
>> 259 fPyjets->V[4][i]));
249 } 260 }
250 } << 261 nparts=numpart;
251 } << 262 }
252 else if (!strcmp(option, "All")) { <<
253 for (int i = 0; i < numpart; i++) { <<
254 particles->push_back(new Pythia6Particle <<
255 fPyjets->K[0][i], fPyjets->K[1][i], fP <<
256 fPyjets->P[0][i], fPyjets->P[1][i], fP <<
257 fPyjets->V[0][i], fPyjets->V[1][i], fP <<
258 } <<
259 nparts = numpart; <<
260 } <<
261 263
262 return nparts; << 264 return nparts;
263 } 265 }
264 <<
265 //....oooOO0OOooo........oooOO0OOooo........oo <<
266 266