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[u/mrichter/AliRoot.git] / THerwig / THerwig6.cxx
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2d8d4543 1// definition of c++ Class THerwig6 to be used in ROOT
2// this is a c++ interface to the F77 Herwig6 program
3// author: j. g. contreras jgcn@moni.mda.cinvestav.mx
4// date: december 22, 2000
884ccf6a 5// Class THerwig6 is an interface to the Herwig program
6//
7// C-----------------------------------------------------------------------
8// C H E R W I G
9// C
10// C a Monte Carlo event generator for simulating
11// C +---------------------------------------------------+
12// C | Hadron Emission Reactions With Interfering Gluons |
13// C +---------------------------------------------------+
14// C I.G. Knowles(*), G. Marchesini(+), M.H. Seymour($) and B.R. Webber(#)
15// C-----------------------------------------------------------------------
16// C with Minimal Supersymmetric Standard Model Matrix Elements by
17// C S. Moretti($) and K. Odagiri($)
18// C-----------------------------------------------------------------------
19// C R parity violating Supersymmetric Decays and Matrix Elements by
20// C P. Richardson(&)
21// C-----------------------------------------------------------------------
22// C matrix element corrections to top decay and Drell-Yan type processes
23// C by G. Corcella(+)
24// C-----------------------------------------------------------------------
25// C Deep Inelastic Scattering and Heavy Flavour Electroproduction by
26// C G. Abbiendi(@) and L. Stanco(%)
27// C-----------------------------------------------------------------------
28// C and Jet Photoproduction in Lepton-Hadron Collisions by J. Chyla(~)
29// C-----------------------------------------------------------------------
30// C(*) Department of Physics & Astronomy, University of Edinburgh
31// C(+) Dipartimento di Fisica, Universita di Milano
32// C($) Rutherford Appleton Laboratory
33// C(#) Cavendish Laboratory, Cambridge
34// C(&) Department of Physics, University of Oxford
35// C(@) Dipartimento di Fisica, Universita di Bologna
36// C(%) Dipartimento di Fisica, Universita di Padova
37// C(~) Institute of Physics, Prague
38// C-----------------------------------------------------------------------
39// C Version 6.100 - 16th December 1999
40// C-----------------------------------------------------------------------
41// C Main reference:
42// C G.Marchesini, B.R.Webber, G.Abbiendi, I.G.Knowles, M.H.Seymour,
43// C and L.Stanco, Computer Physics Communications 67 (1992) 465.
44// C-----------------------------------------------------------------------
45// C Please send e-mail about this program to one of the authors at the
46// C following Internet addresses:
47// C I.Knowles@ed.ac.uk Giuseppe.Marchesini@mi.infn.it
48// C M.Seymour@rl.ac.uk webber@hep.phy.cam.ac.uk
49// C-----------------------------------------------------------------------
50
2d8d4543 51
2d8d4543 52#include "THerwig6.h"
53#include "TClonesArray.h"
54#include "TParticle.h"
884ccf6a 55#include "TObjArray.h"
2d8d4543 56
57
58ClassImp(THerwig6)
59
60extern "C" {
61 void* herwig6_common_block_address_(char*, int len);
62 void herwig6_open_fortran_file_ (int* lun, char* name, int);
63 void herwig6_close_fortran_file_(int* lun);
64}
65
66
2d654757 67THerwig6::THerwig6() : TGenerator("Herwig6","Herwig6"),
68 fHepevt((Hepevt_t*) herwig6_common_block_address_((char*)"HEPEVT",6)),
69 fHwbeam((Hwbeam_t*) herwig6_common_block_address_((char*)"HWBEAM",6)),
70 fHwbmch((Hwbmch_t*) herwig6_common_block_address_((char*)"HWBMCH",6)),
71 fHwproc((Hwproc_t*) herwig6_common_block_address_((char*)"HWPROC",6)),
72 fHwpram((Hwpram_t*) herwig6_common_block_address_((char*)"HWPRAM",6)),
73 fHwprch((Hwprch_t*) herwig6_common_block_address_((char*)"HWPRCH",6)),
74 fHwpart((Hwpart_t*) herwig6_common_block_address_((char*)"HWPART",6)),
75 fHwparp((Hwparp_t*) herwig6_common_block_address_((char*)"HWPARP",6)),
76 fHwbosc((Hwbosc_t*) herwig6_common_block_address_((char*)"HWBOSC",6)),
77 fHwparc((Hwparc_t*) herwig6_common_block_address_((char*)"HWPARC",6)),
78 fHwbrch((Hwbrch_t*) herwig6_common_block_address_((char*)"HWBRCH",6)),
79 fHwevnt((Hwevnt_t*) herwig6_common_block_address_((char*)"HWEVNT",6)),
80 fHwhard((Hwhard_t*) herwig6_common_block_address_((char*)"HWHARD",6)),
81 fHwprop((Hwprop_t*) herwig6_common_block_address_((char*)"HWPROP",6)),
82 fHwunam((Hwunam_t*) herwig6_common_block_address_((char*)"HWUNAM",6)),
83 fHwupdt((Hwupdt_t*) herwig6_common_block_address_((char*)"HWUPDT",6)),
84 fHwuwts((Hwuwts_t*) herwig6_common_block_address_((char*)"HWUWTS",6)),
85 fHwuclu((Hwuclu_t*) herwig6_common_block_address_((char*)"HWUCLU",6)),
86 fHwdist((Hwdist_t*) herwig6_common_block_address_((char*)"HWDIST",6)),
87 fHwqdks((Hwqdks_t*) herwig6_common_block_address_((char*)"HWQDKS",6)),
88 fHwusud((Hwusud_t*) herwig6_common_block_address_((char*)"HWUSUD",6)),
89 fHwsusy((Hwsusy_t*) herwig6_common_block_address_((char*)"HWSUSY",6)),
90 fHwrpar((Hwrpar_t*) herwig6_common_block_address_((char*)"HWRPAR",6)),
91 fHwminb((Hwminb_t*) herwig6_common_block_address_((char*)"HWMINB",6)),
92 fHwclus((Hwclus_t*) herwig6_common_block_address_((char*)"HWCLUS",6)),
93 fHwgrav((Hwgrav_t*) herwig6_common_block_address_((char*)"HWGRAV",6)),
94 fHw6202((Hw6202_t*) herwig6_common_block_address_((char*)"HW6202",6)),
95 fHw6203((Hw6203_t*) herwig6_common_block_address_((char*)"HW6203",6)),
96 fHw6300((Hw6300_t*) herwig6_common_block_address_((char*)"HW6300",6)),
97 fHwpmrs((Hwpmrs_t*) herwig6_common_block_address_((char*)"HWPMRS",6)),
98 fHwcirc((Hwcirc_t*) herwig6_common_block_address_((char*)"HWCIRC",6)),
99 fHwdspb((Hwdspb_t*) herwig6_common_block_address_((char*)"HWDSPB",6)),
100 fHwdsp2((Hwdsp2_t*) herwig6_common_block_address_((char*)"HWDSP2",6)),
101 fHwdsp3((Hwdsp3_t*) herwig6_common_block_address_((char*)"HWDSP3",6)),
102 fHwdsp4((Hwdsp4_t*) herwig6_common_block_address_((char*)"HWDSP4",6)),
103 fHwdspn((Hwdspn_t*) herwig6_common_block_address_((char*)"HWDSPN",6)),
104 fHwspin((Hwspin_t*) herwig6_common_block_address_((char*)"HWSPIN",6)),
105 fHwstau((Hwstau_t*) herwig6_common_block_address_((char*)"HWSTAU",6)),
106 fHwgupr((Hwgupr_t*) herwig6_common_block_address_((char*)"HWGUPR",6)),
107 fHw6500((Hw6500_t*) herwig6_common_block_address_((char*)"HW6500",6)),
108 fHw6504((Hw6504_t*) herwig6_common_block_address_((char*)"HW6504",6)),
109 fHw6506((Hw6506_t*) herwig6_common_block_address_((char*)"HW6506",6))
110{
2d8d4543 111
112// THerwig6 constructor: creates a TClonesArray in which it will store all
113// particles. Note that there may be only one functional THerwig6 object
114// at a time, so it's not use to create more than one instance of it.
115
116 delete fParticles; // was allocated as TObjArray in TGenerator
2d8d4543 117 fParticles = new TClonesArray("TParticle",50);
118
119 // initialize common-blocks
2d8d4543 120 }
121
7677b281 122THerwig6::THerwig6(const THerwig6 & source): TGenerator(source),
2d654757 123 fHepevt((Hepevt_t*) herwig6_common_block_address_((char*)"HEPEVT",6)),
124 fHwbeam((Hwbeam_t*) herwig6_common_block_address_((char*)"HWBEAM",6)),
125 fHwbmch((Hwbmch_t*) herwig6_common_block_address_((char*)"HWBMCH",6)),
126 fHwproc((Hwproc_t*) herwig6_common_block_address_((char*)"HWPROC",6)),
127 fHwpram((Hwpram_t*) herwig6_common_block_address_((char*)"HWPRAM",6)),
128 fHwprch((Hwprch_t*) herwig6_common_block_address_((char*)"HWPRCH",6)),
129 fHwpart((Hwpart_t*) herwig6_common_block_address_((char*)"HWPART",6)),
130 fHwparp((Hwparp_t*) herwig6_common_block_address_((char*)"HWPARP",6)),
131 fHwbosc((Hwbosc_t*) herwig6_common_block_address_((char*)"HWBOSC",6)),
132 fHwparc((Hwparc_t*) herwig6_common_block_address_((char*)"HWPARC",6)),
133 fHwbrch((Hwbrch_t*) herwig6_common_block_address_((char*)"HWBRCH",6)),
134 fHwevnt((Hwevnt_t*) herwig6_common_block_address_((char*)"HWEVNT",6)),
135 fHwhard((Hwhard_t*) herwig6_common_block_address_((char*)"HWHARD",6)),
136 fHwprop((Hwprop_t*) herwig6_common_block_address_((char*)"HWPROP",6)),
137 fHwunam((Hwunam_t*) herwig6_common_block_address_((char*)"HWUNAM",6)),
138 fHwupdt((Hwupdt_t*) herwig6_common_block_address_((char*)"HWUPDT",6)),
139 fHwuwts((Hwuwts_t*) herwig6_common_block_address_((char*)"HWUWTS",6)),
140 fHwuclu((Hwuclu_t*) herwig6_common_block_address_((char*)"HWUCLU",6)),
141 fHwdist((Hwdist_t*) herwig6_common_block_address_((char*)"HWDIST",6)),
142 fHwqdks((Hwqdks_t*) herwig6_common_block_address_((char*)"HWQDKS",6)),
143 fHwusud((Hwusud_t*) herwig6_common_block_address_((char*)"HWUSUD",6)),
144 fHwsusy((Hwsusy_t*) herwig6_common_block_address_((char*)"HWSUSY",6)),
145 fHwrpar((Hwrpar_t*) herwig6_common_block_address_((char*)"HWRPAR",6)),
146 fHwminb((Hwminb_t*) herwig6_common_block_address_((char*)"HWMINB",6)),
147 fHwclus((Hwclus_t*) herwig6_common_block_address_((char*)"HWCLUS",6)),
148 fHwgrav((Hwgrav_t*) herwig6_common_block_address_((char*)"HWGRAV",6)),
149 fHw6202((Hw6202_t*) herwig6_common_block_address_((char*)"HW6202",6)),
150 fHw6203((Hw6203_t*) herwig6_common_block_address_((char*)"HW6203",6)),
151 fHw6300((Hw6300_t*) herwig6_common_block_address_((char*)"HW6300",6)),
152 fHwpmrs((Hwpmrs_t*) herwig6_common_block_address_((char*)"HWPMRS",6)),
153 fHwcirc((Hwcirc_t*) herwig6_common_block_address_((char*)"HWCIRC",6)),
154 fHwdspb((Hwdspb_t*) herwig6_common_block_address_((char*)"HWDSPB",6)),
155 fHwdsp2((Hwdsp2_t*) herwig6_common_block_address_((char*)"HWDSP2",6)),
156 fHwdsp3((Hwdsp3_t*) herwig6_common_block_address_((char*)"HWDSP3",6)),
157 fHwdsp4((Hwdsp4_t*) herwig6_common_block_address_((char*)"HWDSP4",6)),
158 fHwdspn((Hwdspn_t*) herwig6_common_block_address_((char*)"HWDSPN",6)),
159 fHwspin((Hwspin_t*) herwig6_common_block_address_((char*)"HWSPIN",6)),
160 fHwstau((Hwstau_t*) herwig6_common_block_address_((char*)"HWSTAU",6)),
161 fHwgupr((Hwgupr_t*) herwig6_common_block_address_((char*)"HWGUPR",6)),
162 fHw6500((Hw6500_t*) herwig6_common_block_address_((char*)"HW6500",6)),
163 fHw6504((Hw6504_t*) herwig6_common_block_address_((char*)"HW6504",6)),
164 fHw6506((Hw6506_t*) herwig6_common_block_address_((char*)"HW6506",6))
165{
166 Fatal("THerwig6","Copy constructor not implemented yet");
167}
2d8d4543 168//------------------------------------------------------------------------------
169 THerwig6::~THerwig6()
170 {
bbc19b09 171 // Destructor. The data members of TGenerator are delete by itself
2d8d4543 172 }
173
174//______________________________________________________________________________
7677b281 175void THerwig6::GenerateEvent()
2d8d4543 176{
7677b281 177
2d8d4543 178 //initialize event
179 hwuine_();
180 // generate hard subprocess
181 hwepro_();
182 // generate parton cascades
183 hwbgen_();
184 // do heavy objects decay
185 hwdhob_();
186 // do cluster formation
187 hwcfor_();
188 // do cluster decays
189 hwcdec_();
190 // do unstable particle decays
191 hwdhad_();
192 // do heavy flavor hadrons decay
193 hwdhvy_();
194 // add soft underlying event
195 hwmevt_();
196 // finish event
197 hwufne_();
198}
2d8d4543 199//______________________________________________________________________________
200void THerwig6::OpenFortranFile(int lun, char* name) {
201 herwig6_open_fortran_file_(&lun, name, strlen(name));
202}
203
204//______________________________________________________________________________
205void THerwig6::CloseFortranFile(int lun) {
206 herwig6_close_fortran_file_(&lun);
207}
208
209void THerwig6::Initialize(const char *beam, const char *target, double pbeam1, double pbeam2, int iproc)
210
211{
212 // perform the initialization for Herwig6
7677b281 213 // sets correct title.
2d8d4543 214 // after calling this method all parameters are set to their default
215 // values. If you want to modify any parameter you have to set the new
216 // value after calling Initialize and before PrepareRun.
217
218 char cbeam[8];
219 strncpy(cbeam,beam,8);
220 char ctarget[8];
221 strncpy(ctarget,target,8);
222 printf("\n Initializing Herwig !! \n");
223 if ( (!strncmp(beam, "E+" ,2)) &&
224 (!strncmp(beam, "E-" ,2)) &&
225 (!strncmp(beam, "MU+" ,3)) &&
226 (!strncmp(beam, "MU-" ,3)) &&
227 (!strncmp(beam, "NUE" ,3)) &&
228 (!strncmp(beam, "NUEB" ,4)) &&
229 (!strncmp(beam, "NUMU" ,4)) &&
230 (!strncmp(beam, "NMUB" ,4)) &&
231 (!strncmp(beam, "NTAU" ,4)) &&
232 (!strncmp(beam, "NTAB" ,4)) &&
233 (!strncmp(beam, "GAMA" ,4)) &&
234 (!strncmp(beam, "P ",8)) &&
235 (!strncmp(beam, "PBAR ",8)) &&
236 (!strncmp(beam, "N" ,1)) &&
237 (!strncmp(beam, "NBAR" ,4)) &&
238 (!strncmp(beam, "PI+" ,3)) &&
239 (!strncmp(beam, "PI-" ,3)) ) {
240 printf("WARNING! In THerwig6:Initialize():\n");
241 printf(" specified beam=%s is unrecognized .\n",beam);
242 printf(" resetting to \"P\" .");
243 sprintf(cbeam,"P");
244 }
245
246 if ( (!strncmp(target, "E+" ,2)) &&
247 (!strncmp(target, "E-" ,2)) &&
248 (!strncmp(target, "MU+" ,3)) &&
249 (!strncmp(target, "MU-" ,3)) &&
250 (!strncmp(target, "NUE" ,3)) &&
251 (!strncmp(target, "NUEB" ,4)) &&
252 (!strncmp(target, "NUMU" ,4)) &&
253 (!strncmp(target, "NMUB" ,4)) &&
254 (!strncmp(target, "NTAU" ,4)) &&
255 (!strncmp(target, "NTAB" ,4)) &&
256 (!strncmp(target, "GAMA" ,4)) &&
257 (!strncmp(target, "P ",8)) &&
258 (!strncmp(target, "PBAR ",8)) &&
259 (!strncmp(target, "N" ,1)) &&
260 (!strncmp(target, "NBAR" ,4)) &&
261 (!strncmp(target, "PI+" ,3)) &&
262 (!strncmp(target, "PI-" ,3)) ) {
263 printf("WARNING! In THerwig6:Initialize():\n");
264 printf(" specified target=%s is unrecognized .\n",target);
265 printf(" resetting to \"P\" .");
266 sprintf(ctarget,"P");
267 }
268
269 // initialization:
270 // type of beams
271 strncpy(fHwbmch->PART1,beam,8);
272 strncpy(fHwbmch->PART2,target,8);
273 // momentum of beams
274 fHwproc->PBEAM1=pbeam1;
275 fHwproc->PBEAM2=pbeam2;
276 // process to generate
277 fHwproc->IPROC=iproc;
7677b281 278 // not used in the class definition
2d8d4543 279 fHwproc->MAXEV=1;
280
281 // reset all parameters
282 hwigin_();
7677b281 283
2d8d4543 284 // set correct title
285 char atitle[132];
286 double win=pbeam1+pbeam2;
287 printf("\n %s - %s at %g GeV",beam,target,win);
288 sprintf(atitle,"%s-%s at %g GeV",cbeam,ctarget,win);
7677b281 289 SetTitle(atitle);
290}
291
292void THerwig6::InitializeJimmy(const char *beam, const char *target, double pbeam1, double pbeam2, int iproc)
293
294{
295 // perform the initialization for Herwig6
296 // sets correct title.
297 // after calling this method all parameters are set to their default
298 // values. If you want to modify any parameter you have to set the new
299 // value after calling Initialize and before PrepareRun.
300
301 char cbeam[8];
302 strncpy(cbeam,beam,8);
303 char ctarget[8];
304 strncpy(ctarget,target,8);
305 printf("\n Initializing Herwig !! \n");
306 if ( (!strncmp(beam, "E+" ,2)) &&
307 (!strncmp(beam, "E-" ,2)) &&
308 (!strncmp(beam, "MU+" ,3)) &&
309 (!strncmp(beam, "MU-" ,3)) &&
310 (!strncmp(beam, "NUE" ,3)) &&
311 (!strncmp(beam, "NUEB" ,4)) &&
312 (!strncmp(beam, "NUMU" ,4)) &&
313 (!strncmp(beam, "NMUB" ,4)) &&
314 (!strncmp(beam, "NTAU" ,4)) &&
315 (!strncmp(beam, "NTAB" ,4)) &&
316 (!strncmp(beam, "GAMA" ,4)) &&
317 (!strncmp(beam, "P ",8)) &&
318 (!strncmp(beam, "PBAR ",8)) &&
319 (!strncmp(beam, "N" ,1)) &&
320 (!strncmp(beam, "NBAR" ,4)) &&
321 (!strncmp(beam, "PI+" ,3)) &&
322 (!strncmp(beam, "PI-" ,3)) ) {
323 printf("WARNING! In THerwig6:Initialize():\n");
324 printf(" specified beam=%s is unrecognized .\n",beam);
325 printf(" resetting to \"P\" .");
326 sprintf(cbeam,"P");
327 }
328
329 if ( (!strncmp(target, "E+" ,2)) &&
330 (!strncmp(target, "E-" ,2)) &&
331 (!strncmp(target, "MU+" ,3)) &&
332 (!strncmp(target, "MU-" ,3)) &&
333 (!strncmp(target, "NUE" ,3)) &&
334 (!strncmp(target, "NUEB" ,4)) &&
335 (!strncmp(target, "NUMU" ,4)) &&
336 (!strncmp(target, "NMUB" ,4)) &&
337 (!strncmp(target, "NTAU" ,4)) &&
338 (!strncmp(target, "NTAB" ,4)) &&
339 (!strncmp(target, "GAMA" ,4)) &&
340 (!strncmp(target, "P ",8)) &&
341 (!strncmp(target, "PBAR ",8)) &&
342 (!strncmp(target, "N" ,1)) &&
343 (!strncmp(target, "NBAR" ,4)) &&
344 (!strncmp(target, "PI+" ,3)) &&
345 (!strncmp(target, "PI-" ,3)) ) {
346 printf("WARNING! In THerwig6:Initialize():\n");
347 printf(" specified target=%s is unrecognized .\n",target);
348 printf(" resetting to \"P\" .");
349 sprintf(ctarget,"P");
350 }
351
352 // initialization:
353 // type of beams
354 strncpy(fHwbmch->PART1,beam,8);
355 strncpy(fHwbmch->PART2,target,8);
356 // momentum of beams
357 fHwproc->PBEAM1=pbeam1;
358 fHwproc->PBEAM2=pbeam2;
359 // process to generate
360 fHwproc->IPROC=iproc;
361 // not used in the class definition
362 fHwproc->MAXEV=1;
363
364 // reset all parameters
365 hwigin_();
366 // JIMMY initialization
367 jimmin_();
368
369 // set correct title
370 char atitle[132];
371 double win=pbeam1+pbeam2;
372 printf("\n %s - %s at %g GeV",beam,target,win);
373 sprintf(atitle,"%s-%s at %g GeV",cbeam,ctarget,win);
374 SetTitle(atitle);
2d8d4543 375}
376
377void THerwig6::PrepareRun()
378{
379 // compute parameter dependent constants
380 hwuinc_();
381 // initialize elementary processes
382 hweini_();
383}
384
7677b281 385void THerwig6::PrepareRunJimmy()
386{
387 // compute parameter dependent constants
388 hwuinc_();
389 // initialize elementary processes
390 hweini_();
391 // more initializations for JIMMY
392 jminit_();
393}
2d8d4543 394//______________________________________________________________________________
395TObjArray* THerwig6::ImportParticles(Option_t *option)
396{
397//
398// Default primary creation method. It reads the /HEPEVT/ common block which
399// has been filled by the GenerateEvent method. If the event generator does
400// not use the HEPEVT common block, This routine has to be overloaded by
401// the subclasses.
402// The default action is to store only the stable particles (ISTHEP = 1)
403// This can be demanded explicitly by setting the option = "Final"
404// If the option = "All", all the particles are stored.
405//
406 fParticles->Clear();
407 Int_t numpart = fHepevt->NHEP;
408 TClonesArray &a = *((TClonesArray*)fParticles);
409 if (!strcmp(option,"") || !strcmp(option,"Final")) {
d1e3482a 410 for (Int_t i = 0; i < numpart; i++) {
2d8d4543 411 if (fHepevt->ISTHEP[i] == 1) {
412//
413// Use the common block values for the TParticle constructor
414//
415 new(a[i]) TParticle(
416 fHepevt->IDHEP[i],
417 fHepevt->ISTHEP[i],
418 fHepevt->JMOHEP[i][0]-1,
419 fHepevt->JMOHEP[i][1]-1,
420 fHepevt->JDAHEP[i][0]-1,
421 fHepevt->JDAHEP[i][1]-1,
422
423 fHepevt->PHEP[i][0],
424 fHepevt->PHEP[i][1],
425 fHepevt->PHEP[i][2],
426 fHepevt->PHEP[i][3],
427 fHepevt->VHEP[i][0],
428 fHepevt->VHEP[i][1],
429 fHepevt->VHEP[i][2],
430 fHepevt->VHEP[i][3]);
431 }
432 }
433 }
434 else if (!strcmp(option,"All")) {
d1e3482a 435 for (Int_t i = 0; i < numpart; i++) {
2d8d4543 436 new(a[i]) TParticle(
437 fHepevt->IDHEP[i],
438 fHepevt->ISTHEP[i],
439 fHepevt->JMOHEP[i][0]-1,
440 fHepevt->JMOHEP[i][1]-1,
441 fHepevt->JDAHEP[i][0]-1,
442 fHepevt->JDAHEP[i][1]-1,
443
444 fHepevt->PHEP[i][0],
445 fHepevt->PHEP[i][1],
446 fHepevt->PHEP[i][2],
447 fHepevt->PHEP[i][3],
448 fHepevt->VHEP[i][0],
449 fHepevt->VHEP[i][1],
450 fHepevt->VHEP[i][2],
451 fHepevt->VHEP[i][3]);
452 }
453 }
454 return fParticles;
455}
456
457//______________________________________________________________________________
458Int_t THerwig6::ImportParticles(TClonesArray *particles, Option_t *option)
459{
460//
461// Default primary creation method. It reads the /HEPEVT/ common block which
462// has been filled by the GenerateEvent method. If the event generator does
463// not use the HEPEVT common block, This routine has to be overloaded by
464// the subclasses.
465// The function loops on the generated particles and store them in
466// the TClonesArray pointed by the argument particles.
467// The default action is to store only the stable particles (ISTHEP = 1)
468// This can be demanded explicitly by setting the option = "Final"
469// If the option = "All", all the particles are stored.
470//
471 if (particles == 0) return 0;
884ccf6a 472 TClonesArray &refParticles = *particles;
473 refParticles.Clear();
2d8d4543 474 Int_t numpart = fHepevt->NHEP;
475 if (!strcmp(option,"") || !strcmp(option,"Final")) {
d1e3482a 476 for (Int_t i = 0; i < numpart; i++) {
2d8d4543 477 if (fHepevt->ISTHEP[i] == 1) {
478//
479// Use the common block values for the TParticle constructor
480//
884ccf6a 481 new(refParticles[i]) TParticle(
2d8d4543 482 fHepevt->IDHEP[i],
483 fHepevt->ISTHEP[i],
484 fHepevt->JMOHEP[i][0]-1,
485 fHepevt->JMOHEP[i][1]-1,
486 fHepevt->JDAHEP[i][0]-1,
487 fHepevt->JDAHEP[i][1]-1,
488
489 fHepevt->PHEP[i][0],
490 fHepevt->PHEP[i][1],
491 fHepevt->PHEP[i][2],
492 fHepevt->PHEP[i][3],
493 fHepevt->VHEP[i][0],
494 fHepevt->VHEP[i][1],
495 fHepevt->VHEP[i][2],
496 fHepevt->VHEP[i][3]);
497 }
498 }
499 }
500 else if (!strcmp(option,"All")) {
501 for (Int_t i = 0; i< numpart; i++) {
884ccf6a 502 new(refParticles[i]) TParticle(
2d8d4543 503 fHepevt->IDHEP[i],
504 fHepevt->ISTHEP[i],
505 fHepevt->JMOHEP[i][0]-1,
506 fHepevt->JMOHEP[i][1]-1,
507 fHepevt->JDAHEP[i][0]-1,
508 fHepevt->JDAHEP[i][1]-1,
509
510 fHepevt->PHEP[i][0],
511 fHepevt->PHEP[i][1],
512 fHepevt->PHEP[i][2],
513 fHepevt->PHEP[i][3],
514 fHepevt->VHEP[i][0],
515 fHepevt->VHEP[i][1],
516 fHepevt->VHEP[i][2],
517 fHepevt->VHEP[i][3]);
518 }
519 }
520 return numpart;
521}
522
523void THerwig6::Hwigin()
524{
525 hwigin_();
526}
527
528void THerwig6::Hwuinc()
529{
530 hwuinc_();
531}
532
533void THerwig6::Hwusta(char* name)
534
535{
536 hwusta_(name,8);
537}
538
539void THerwig6::Hweini()
540
541{
542 hweini_();
543}
544
545void THerwig6::Hwuine()
546
547{
548 hwuine_();
549}
550
551void THerwig6::Hwepro()
552
553{
554 hwepro_();
555}
556
557void THerwig6::Hwbgen()
558
559{
560 hwbgen_();
561}
562
563void THerwig6::Hwdhob()
564
565{
566 hwdhob_();
567}
568
569void THerwig6::Hwcfor()
570
571{
572 hwcfor_();
573}
574
575void THerwig6::Hwcdec()
576
577{
578 hwcdec_();
579}
580
581void THerwig6::Hwdhad()
582
583{
584 hwdhad_();
585}
586
587void THerwig6::Hwdhvy()
588
589{
590 hwdhvy_();
591}
592
593void THerwig6::Hwmevt()
594
595{
596 hwmevt_();
597}
598
599void THerwig6::Hwufne()
600
601{
602 hwufne_();
603}
604
605void THerwig6::Hwefin()
606
607{
608 hwefin_();
609}
610
e2054d85 611void THerwig6::Hwiodk(int iopt)
612
613{
614 hwiodk_(iopt);
615}
616
2d8d4543 617void THerwig6::SetupTest()
618{
619 // exampe of running herwig and generating one event
620 // after changing some options
621 Initialize("P","PBAR",900.,900.,1500);
622 // here you can set some parameters
623 SetPTMIN(15.); // Min pt in hadronic jet production
624 SetYJMIN(-4.); // Min jet rapidity
625 SetYJMAX(4.); // Max jet rapidity
626 // after you set your wished parameters
627 // herwig can do its work
628 PrepareRun();
884ccf6a 629 int nEvToGenerate=1;
630 for (int i=0;i<nEvToGenerate;i++)
2d8d4543 631 {
632 GenerateEvent();
633 // do your stuff. For ex:
884ccf6a 634 int nOfPar=GetNumberOfParticles(); // from TGenerator
635 for (int j=0; j<nOfPar; j++)
2d8d4543 636 {
637 TParticle* p=GetParticle(j);
638 // here you do whatever you want with the particle
639 p->Print();
640 };
641 };
642}
643
7677b281 644// Jimmy subroutines
645
646void THerwig6::Jminit()
647{
648 jminit_();
649}
650
651void THerwig6::Jimmin()
652{
653 jimmin_();
654}
655
656void THerwig6::Jmefin()
657{
658 jmefin_();
659}
660
661
2d8d4543 662
663
664
665