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2e967919 1/******************************************************************************
2 * T H E R M I N A T O R *
3 * THERMal heavy-IoN generATOR *
4 * version 1.0 *
5 * *
6 * Authors of the model: Wojciech Broniowski, Wojciech.Broniowski@ifj.edu.pl, *
7 * Wojciech Florkowski, Wojciech.Florkowski@ifj.edu.pl *
8 * Authors of the code: Adam Kisiel, kisiel@if.pw.edu.pl *
9 * Tomasz Taluc, ttaluc@if.pw.edu.pl *
10 * Code designers: Adam Kisiel, Tomasz Taluc, Wojciech Broniowski, *
11 * Wojciech Florkowski *
12 * *
13 * For the detailed description of the program and furhter references *
14 * to the description of the model plesase refer to: nucl-th/0504047, *
15 * accessibile at: http://www.arxiv.org/nucl-th/0504047 *
16 * *
17 * Homepage: http://hirg.if.pw.edu.pl/en/therminator/ *
18 * *
19 * This code can be freely used and redistributed. However if you decide to *
20 * make modifications to the code, please contact the authors, especially *
21 * if you plan to publish the results obtained with such modified code. *
22 * Any publication of results obtained using this code must include the *
23 * reference to nucl-th/0504047 and the published version of it, when *
24 * available. *
25 * *
26 *****************************************************************************/
27#include <TMath.h>
28#include "THGlobal.h"
29#include "ReadPar.h"
30#include "Parser.h"
31#include "DecayChannel.h"
32#include <sstream>
f8777da0 33#include <cstring>
2e967919 34
35extern ReadPar *sRPInstance;
36
37const double factorials[7] = {1.0, 1.0, 2.0, 6.0, 24.0, 120.0, 720.0 };
38
39Parser::Parser(ParticleDB *aDB)
40{
41 mDB = aDB;
42 ReadParameters();
43}
44
45Parser::~Parser()
46{
47}
48
49int Parser::check(char *a,char *b)
50{
51 int tIter3=0;
52
53 while(a[tIter3]!='\0')
54 {
55 if(a[tIter3]!=b[tIter3]) return 0;
56 tIter3++;
57 }
58 return 1;
59}
60
61int Parser::GetParticleCount()
62{
63 return mParticleCount;
64}
65
66char * Parser::GetParticleName(int i)
67{
68 return mNameBuffer[i];
69}
70
71double Parser::GetParticleMass(int i)
72{
73 return mMassBuffer[i];
74}
75
76double Parser::GetParticleGamma(int i)
77{
78 return mGammaBuffer[i];
79}
80
81double Parser::GetParticleSpin(int i)
82{
83 return mSpinBuffer[i];
84}
85
86int Parser::GetParticleBarionN(int i)
87{
88 return mBarionBuffer[i];
89}
90
91int Parser::GetParticleStrangeN(int i)
92{
93 return mStrangeBuffer[i];
94}
95
96double Parser::GetParticleI3(int i)
97{
98 return mI3Buffer[i];
99}
100
101int Parser::GetParticleDecayChannelCount(int i,int j)
102{
103 return mDecayBuffer[i][j];
104}
105
106int Parser::GetParticleNumber(int i)
107{
108 return mTypeCountBuffer[i];
109}
110
111void Parser::ReadInput()
112{
c61a7285 113 int j,tPartIter=0,l,tIter2, tIter; //variables
09b7c66c 114 char str[200];
115 char str1[200];
2e967919 116 double spin1,spin2,value;
117
118 ////// START OF "TABLES.M" /////////
119 ifstream in("tables.m");
120 if(in)
121 {
122 //START OF HEAD-LINE
123 in.ignore(100,'\n');
124 //END OF HEAD-LINE
125
126 for(tIter2=0;tIter2<50;tIter2++) str[tIter2]='\0';
127
128 tPartIter=0;
129
130 //START OF DATA
131 while(in>>str)
132 {
133 if(*str == 'x') break;
134
135 l=0;
136 //PARTICLE NAME AND MASS
137 if(str[0] == 'm' && str[1] == '[')
138 {
139 for(;;)
140 {
141 if(str[l+2] == ']') break;
142 mNameBuffer[tPartIter][l]=str[l+2]; //name
143 l++;
144 }
145 // mNameBuffer[tPartIter][l]='\0';
146 in>>str; // sign "="
147 in>>value; // mass
148 mMassBuffer[tPartIter]=value;
149 mTypeCountBuffer[tPartIter]=tPartIter;
150 for(tIter2=0;tIter2<50;tIter2++) str[tIter2]='\0';
151 }
152
153 if(str[0] == 'G' && str[3] == '[')
154 {
155 in>>str; // sign "="
156 in>>value; // gamma
157 mGammaBuffer[tPartIter]=value;
158 for(tIter2=0;tIter2<50;tIter2++) str[tIter2]='\0';
159 }
160
161 // spin
162 if(str[0] == 'J' && str[1] == '[')
163 {
164 in>>str; // sign "="
165 in>>str;
166 if(str[1] == '/')
167 {
168 *str1=str[0];spin1=atof(str1);
169 *str1=str[2];spin2=atof(str1);
170 mSpinBuffer[tPartIter]=spin1/spin2;
171 }
172 if(str[0] == '-')
173 {
174 *str1=str[1];spin1=atof(str1);
175 mSpinBuffer[tPartIter]=-spin1;
176 }
177 if(str[0]!='-' && str[1]!='/')
178 {
179 *str1=str[0];
180 spin1=atof(str1);
181 mSpinBuffer[tPartIter]=spin1;
182 }
183 tPartIter++; //next particle
184 for(tIter2=0;tIter2<50;tIter2++) str[tIter2]='\0';
185 }
186 }
187 //END OF DATA
188 }
189 mParticleCount=tPartIter;
190 ////// END OF "TABLES.M" /////////
191
192
193 ////// START OF "i200STAR.m"//////
194
195 double izospin1,izospin2; //help to calculate izospin, if niecalkowity
196 // input=fopen("i200STAR.m","r+");
197 ifstream in1("i200STAR.m");
198
199 for(tIter2=0;tIter2<369;tIter2++)
200 for(int jj=0;jj<2;jj++) mDecayBuffer[tIter2][jj]=0;
201
202 for(;;)
203 {
204 j=3; //first letter of particle in line in file
205 for(tIter=0;tIter<50;tIter++) str[tIter]='\0';
206 for(tIter=0;tIter<20;tIter++) str1[tIter]='\0';
207 tIter=0;
208
209 in1.getline(str,200);
210
211 if(str[0] == 'x') break;
212
213 if(str[0] == 'f' && str[1] == 'i')
214 {
215 //name
216 for(;;)
217 {
218 if(str[j] == ',')
219 {
220 j++; //to skip ","
221 break;
222 }
223 str1[tIter++]=str[j++];
224 }
225 for(tIter=0;tIter<369;tIter++)
226 {
227 if(check(str1,mNameBuffer[tIter]))
228 {
229 //barion number
230 for(tIter2=0;tIter2<20;tIter2++) str1[tIter2]='\0';
231 if(str[j] == '-')
232 {
233 *str1=str[j+1];
234 mBarionBuffer[tIter]=atoi(str1);
235 mBarionBuffer[tIter]=-mBarionBuffer[tIter];
236 }
237 if(str[j] != '-')
238 {
239 *str1=str[j];
240 mBarionBuffer[tIter]=atoi(str1);
241 }
242 if(str[j] == '-') j+=3;
243 else j+=2;
244
245 //strange number
246 for(tIter2=0;tIter2<20;tIter2++) str1[tIter2]='\0';
247 if(str[j] == '-')
248 {
249 *str1=str[j+1];
250 mStrangeBuffer[tIter]=atoi(str1);
251 mStrangeBuffer[tIter]=-mStrangeBuffer[tIter];
252 }
253 if(str[j] != '-')
254 {
255 *str1=str[j];
256 mStrangeBuffer[tIter]=atoi(str1);
257 }
258 if(str[j] == '-') j+=3;
259 else j+=2;
260
261 //izospin3 number
262 for(tIter2=0;tIter2<20;tIter2++) str1[tIter2]='\0';
263 if(str[j+1] == '/' && str[j+3] == ']')
264 {
265 *str1=str[j];
266 izospin1=atoi(str1);
267 *str1=str[j+2];
268 izospin2=atoi(str1);
269 mI3Buffer[tIter]=izospin1/izospin2;
270 }
271 if(str[j] == '-' && str[j+2] == '/' && str[j+4] == ']')
272 {
273 *str1=str[j+1];
274 izospin1=atoi(str1);
275 *str1=str[j+3];
276 izospin2=atoi(str1);
277 mI3Buffer[tIter]=-izospin1/izospin2;
278 }
279 if(str[j] == '-' && str[j+2] == ']')
280 {
281 *str1=str[j+1];
282 izospin1=atoi(str1);
283 mI3Buffer[tIter]=-izospin1;
284 }
285 if(str[j+1] == ']')
286 {
287 *str1=str[j];
288 mI3Buffer[tIter]=atof(str1);
289 }
290 break;
291 }
292 }
293 }
294
295 //DECAY CHANNELS
296
297 tIter=0;
298 //TWO-BODY DECAYS
299 if(str[0] == 's' && str[1] == 'e' && str[2] == '[')
300 {
301 // Reading in the decay channels
302 char *tLBrackert, *tFirstComma, *tSecondComma, *tThirdComma, *tRBracket;
2e967919 303
304 tLBrackert = strchr(str,'[');
305 tFirstComma = strchr(str,',');
306 tSecondComma = strchr(tFirstComma+1,',');
307 tThirdComma = strchr(tSecondComma+1,',');
308 tRBracket = strchr(tThirdComma,']');
309
310 if (!(tLBrackert && tFirstComma && tSecondComma && tThirdComma && tRBracket))
311 PRINT_DEBUG_1("Malformed line!: " << str);
312
f8777da0 313 char *tFather = new char[tFirstComma-tLBrackert];
314 strncpy(tFather, tLBrackert+1, tFirstComma-tLBrackert-1);
315 char *tDaughter1 = new char[tSecondComma-tFirstComma];
316 strncpy(tDaughter1, tFirstComma+1, tSecondComma-tFirstComma-1);
317 char *tDaughter2 = new char[tThirdComma-tSecondComma];
318 strncpy(tDaughter2, tSecondComma+1, tThirdComma-tSecondComma-1);
319 char *tBRatio = new char[tRBracket-tThirdComma];
320 strncpy(tBRatio, tThirdComma+1, tRBracket-tThirdComma-1);
2e967919 321
322 // Getting the ratio
323 char *tMiddle, *tRatComponent;
324 double tRatio = 1.0;
325
326 tMiddle = strchr(tBRatio,'_');
327 if (!tMiddle) tMiddle = strchr(tBRatio,' ');
328 while(tMiddle)
329 {
f8777da0 330 tRatComponent = new char[tMiddle-tBRatio+1];
331 strncpy(tRatComponent, tBRatio, tMiddle-tBRatio);
2e967919 332 if (strchr(tRatComponent,'/'))
333 tRatio *= atof(tRatComponent)/atof(tRatComponent+2);
334 else
335 tRatio *= atof(tRatComponent);
336 tBRatio = tMiddle+1;
337 tMiddle = strchr(tBRatio,'_');
338 if (!tMiddle) tMiddle = strchr(tBRatio,' ');
f8777da0 339 delete [] tRatComponent;
2e967919 340 }
341 if (strchr(tBRatio,'/'))
342 tRatio *= atof(tBRatio)/atof(tBRatio+2);
343 else
344 tRatio *= atof(tBRatio);
09b7c66c 345
8e85ac49 346 delete [] tFather;
347 delete [] tDaughter1;
348 delete [] tDaughter2;
349 delete [] tBRatio;
2e967919 350 }
351
352 //THREE-BODY DECAYS
353 j++; //because se3[]
354 if(str[0] == 's' && str[1] == 'e' && str[2] == '3' && str[3] == '[')
355 {
356 for(;;)
357 {
358 if(str[j] == ',')
359 {
360 j++; //to skip ","
361 break;
362 }
363 str1[tIter++]=str[j++]; //name
364 }
365
366 for(tIter=0;tIter<369;tIter++)
367 {
368 if(check(str1,mNameBuffer[tIter]))
369 {
370 mDecayBuffer[tIter][1]++;
371 break;
372 }
373 }
374 }
375
376
377 }
378 ////// END OF "i200STAR.m"//////
379
380 ParticleType *tPartBuf;
381 int tNum, tPart;
382
383 for(tPart=0;tPart<mParticleCount;tPart++)
384 {
385 tPartBuf = new ParticleType();
386 tPartBuf->SetName(mNameBuffer[tPart]);
387 tPartBuf->SetMass(mMassBuffer[tPart]);
388 tPartBuf->SetGamma(mGammaBuffer[tPart]);
389 tPartBuf->SetSpin(mSpinBuffer[tPart]);
390 tPartBuf->SetBarionN(mBarionBuffer[tPart]);
391 tPartBuf->SetStrangeness(mStrangeBuffer[tPart]);
392 tPartBuf->SetI3(mI3Buffer[tPart]);
393 tPartBuf->SetDecayChannelCount2(mDecayBuffer[tPart][0]);
394 tPartBuf->SetDecayChannelCount3(mDecayBuffer[tPart][1]);
395 tPartBuf->SetNumber(tPart);
396 tNum = mDB->AddParticleType(tPartBuf);
397 }
398
399 ifstream in2("i200STAR.m");
400 while (in2.getline(str,200))
401 {
402 tIter=0;
403 //TWO-BODY DECAYS
404 if(str[0] == 's' && str[1] == 'e' && str[2] == '[')
405 {
406 // Reading in the decay channels
407 char *tLBrackert, *tFirstComma, *tSecondComma, *tThirdComma, *tRBracket;
2e967919 408
409 tLBrackert = strchr(str,'[');
410 tFirstComma = strchr(str,',');
411 tSecondComma = strchr(tFirstComma+1,',');
412 tThirdComma = strchr(tSecondComma+1,',');
413 tRBracket = strchr(tThirdComma,']');
414 if (!(tLBrackert && tFirstComma && tSecondComma && tThirdComma && tRBracket))
415 PRINT_DEBUG_1("Malformed line!: " << str);
416
f8777da0 417 char *tFather = new char[tFirstComma-tLBrackert];
418 strncpy(tFather, tLBrackert+1, tFirstComma-tLBrackert-1);
419 char *tDaughter1 = new char[tSecondComma-tFirstComma];
420 strncpy(tDaughter1, tFirstComma+1, tSecondComma-tFirstComma-1);
421 char *tDaughter2 = new char[tThirdComma-tSecondComma];
422 strncpy(tDaughter2, tSecondComma+1, tThirdComma-tSecondComma-1);
423 char *tBRatio = new char[tRBracket-tThirdComma];
424 strncpy(tBRatio, tThirdComma+1, tRBracket-tThirdComma-1);
2e967919 425
426 // Getting the ratio
427 char *tMiddle, *tRatComponent;
428 double tRatio = 1.0;
429
430 tMiddle = strchr(tBRatio,'_');
431 if (!tMiddle) tMiddle = strchr(tBRatio,' ');
432 while(tMiddle)
433 {
f8777da0 434 tRatComponent = new char[tMiddle-tBRatio];
435 strncpy(tRatComponent, tBRatio, tMiddle-tBRatio);
2e967919 436 if (strchr(tRatComponent,'/'))
437 tRatio *= atof(tRatComponent)/atof(tRatComponent+2);
438 else
439 tRatio *= atof(tRatComponent);
440 tBRatio = tMiddle+1;
441 tMiddle = strchr(tBRatio,'_');
442 if (!tMiddle) tMiddle = strchr(tBRatio,' ');
f8777da0 443 delete [] tRatComponent;
2e967919 444 }
445 if (strchr(tBRatio,'/'))
446 tRatio *= atof(tBRatio)/atof(tBRatio+2);
447 else
448 tRatio *= atof(tBRatio);
449
450 DecayChannel *newChannel = new DecayChannel(tRatio, mDB->GetParticleTypeIndex(tDaughter1), mDB->GetParticleTypeIndex(tDaughter2), -1);
451 // if (mDB->GetParticleType(tDaughter1)->GetMass() +
452 // mDB->GetParticleType(tDaughter2)->GetMass()
453 // < mDB->GetParticleType(tFather)->GetMass()) {
454 // (mDB->GetParticleType(tFather))->AddDecayChannel(*newChannel);
455 // }
456 (mDB->GetParticleType(tFather))->AddDecayChannel(*newChannel);
09b7c66c 457
0cf15e65 458 delete [] tFather;
459 delete [] tDaughter1;
460 delete [] tDaughter2;
0cf15e65 461 delete [] tBRatio;
462
09b7c66c 463 delete newChannel;
2e967919 464 }
465
466 if(str[0] == 's' && str[1] == 'e' && str[2] == '3')
467 {
468 // Reading in the decay channels
469 char *tLBrackert, *tFirstComma, *tSecondComma, *tThirdComma, *tFourthComma, *tRBracket;
2e967919 470
471 tLBrackert = strchr(str,'[');
472 tFirstComma = strchr(str,',');
473 tSecondComma = strchr(tFirstComma+1,',');
474 tThirdComma = strchr(tSecondComma+1,',');
475 tFourthComma = strchr(tThirdComma+1,',');
476 tRBracket = strchr(tThirdComma,']');
477
478 if (!(tLBrackert && tFirstComma && tSecondComma && tThirdComma && tFourthComma && tRBracket))
479 PRINT_DEBUG_1("Malformed line!: " << str);
480
f8777da0 481 char *tFather = new char[tFirstComma-tLBrackert];
482 strncpy(tFather, tLBrackert+1, tFirstComma-tLBrackert-1);
483 char *tDaughter1 = new char[tSecondComma-tFirstComma];
484 strncpy(tDaughter1, tFirstComma+1, tSecondComma-tFirstComma-1);
485 char *tDaughter2 = new char[tThirdComma-tSecondComma];
486 strncpy(tDaughter2, tSecondComma+1, tThirdComma-tSecondComma-1);
487 char *tDaughter3 = new char[tFourthComma-tThirdComma];
488 strncpy(tDaughter3, tThirdComma+1, tFourthComma-tThirdComma-1);
489 char *tBRatio = new char[tRBracket-tFourthComma];
490 strncpy(tBRatio, tFourthComma+1, tRBracket-tFourthComma-1);
2e967919 491
492 // Getting the ratio
493 char *tMiddle, *tRatComponent;
494 double tRatio = 1.0;
495
496 tMiddle = strchr(tBRatio,'_');
497 if (!tMiddle) tMiddle = strchr(tBRatio,' ');
498 while(tMiddle)
499 {
f8777da0 500 tRatComponent = new char[tMiddle-tBRatio+1];
501 strncpy(tRatComponent, tBRatio, tMiddle-tBRatio);
2e967919 502 if (strchr(tRatComponent,'/'))
503 tRatio *= atof(tRatComponent)/atof(tRatComponent+2);
504 else
505 tRatio *= atof(tRatComponent);
506 tBRatio = tMiddle+1;
507 tMiddle = strchr(tBRatio,'_');
508 if (!tMiddle) tMiddle = strchr(tBRatio,' ');
f8777da0 509 delete [] tRatComponent;
2e967919 510 }
511 if (strchr(tBRatio,'/'))
512 tRatio *= atof(tBRatio)/atof(tBRatio+2);
513 else
514 tRatio *= atof(tBRatio);
515
516 DecayChannel *newChannel = new DecayChannel(tRatio, mDB->GetParticleTypeIndex(tDaughter1), mDB->GetParticleTypeIndex(tDaughter2), mDB->GetParticleTypeIndex(tDaughter3));
517 // if (mDB->GetParticleType(tDaughter1)->GetMass() +
518 // mDB->GetParticleType(tDaughter2)->GetMass() +
519 // mDB->GetParticleType(tDaughter3)->GetMass()
520 // < mDB->GetParticleType(tFather)->GetMass())
521 (mDB->GetParticleType(tFather))->AddDecayChannel(*newChannel);
d58024dc 522
0cf15e65 523 delete [] tFather;
524 delete [] tDaughter1;
525 delete [] tDaughter2;
526 delete [] tDaughter3;
527 delete [] tBRatio;
6750cf94 528
529 delete newChannel;
2e967919 530 }
531 }
532
533 ifstream in3("pdgcodes.m");
534 while (in3.getline(str,200))
535 {
536 string tName;
537 int tCode;
538
539 std::stringstream tIS(str);
540 tIS >> tName >> tCode;
541 mDB->GetParticleType(tName)->SetPDGCode(tCode);
542 }
543
544}
545
546
547void Parser::ReadShare()
548{
549 char str[50];
550 char str1[200];
551
552 ParticleType *tPartBuf;
553 int tNum;
554
555 PRINT_DEBUG_1("Reading from |"<<(mInputDir+"/"+"particles.data").Data()<<"|");
556 ifstream in((mInputDir+"/"+"particles.data").Data());
557
558 int number=0;
559 if ((in) && (in.is_open()))
560 {
561 //START OF HEAD-LINE
562 in.ignore(200,'\n');
563 in.ignore(200,'\n');
564 in.ignore(200,'\n');
565 //END OF HEAD-LINE
566
567 while (in>>str)
568 {
569 if (/*(*str == '#')||*/(*str<65)||(*str>122))
570 {
571 in.getline(str1,200);
572 continue;
573 }
574 double mass, gamma, spin, I3, I, q, s, aq, as, c, ac, mc;
575
576 in>>mass>>gamma>>spin>>I>>I3>>q>>s>>aq>>as>>c>>ac>>mc;
577 number++;
578 PRINT_DEBUG_2(number<<" "<<str<<" "<<mass<<" "<<gamma<<" "<<spin<<" "<<I<<" "<<I3<<" "<<q<<" "<<aq<<" "<<s<<" "<<as<<" "<<c<<" "<<ac<<" "<<mc);
579
580 tPartBuf = new ParticleType();
581 tPartBuf->SetName(str);
582 tPartBuf->SetMass(mass);
583 tPartBuf->SetGamma(gamma);
584 tPartBuf->SetSpin(spin);
585 tPartBuf->SetBarionN((int) ((q+s+c)/3. - (aq+as+ac)/3.) );
586 tPartBuf->SetCharmN((int) (c - ac));
587 tPartBuf->SetStrangeness((int) (as-s));
588 tPartBuf->SetI(I);
589 tPartBuf->SetI3(I3);
590 tPartBuf->SetPDGCode((int) mc);
591 tPartBuf->SetNumber(number);
592 tNum = mDB->AddParticleType(tPartBuf);
d779ed42 593
594 delete tPartBuf;
2e967919 595 }
596 in.close();
597 }
598 else
599 {
600 PRINT_MESSAGE("File "<<(mInputDir+"/"+"particles.data").Data()<<" containing particle data not found!");
601 PRINT_MESSAGE("Please set the correct path to this file in the input parameter file");
602 PRINT_MESSAGE("Aborting!");
603 exit(0);
604 }
605
606 ifstream in2((mInputDir+"/decays.data").Data());
607 if ((in2) && (in2.is_open()))
608 {
609 //START OF HEAD-LINE
610 in2.ignore(200,'\n');
611 in2.ignore(200,'\n');
612 in2.ignore(200,'\n');
613 //END OF HEAD-LINE
614
f12dabf0 615 char tFather[50], tDaughter1[50], tDaughter2[50], tDaughter3[50];
2e967919 616 double tBRatio, tRatio;
617 int CGcoeff; // complete branching ratio by Clebsch-Gordan coefficient: 0-no 1-yes
618
619 while (in2>>str)
620 {
621 if (*str == '#')
622 {
623 in2.getline(str1,200);
624 continue;
625 }
626 in2>>tDaughter1>>tDaughter2>>tDaughter3;
627 if (!mDB->ExistsParticleType(tDaughter1)) {
628 PRINT_MESSAGE("Did not find the daughter 1 particle: " << tDaughter1);
629 PRINT_MESSAGE("Not adding channel");
630 in2.getline(str1,200);
631 continue;
632 }
633 if (!mDB->ExistsParticleType(tDaughter2)) {
634 PRINT_MESSAGE("Did not find the daughter 2 particle: " << tDaughter2);
635 PRINT_MESSAGE("Not adding channel");
636 in2.getline(str1,200);
637 continue;
638 }
639 if ((*tDaughter3>65)&&(*tDaughter3<122)&&(!mDB->ExistsParticleType(tDaughter3))) {
640 PRINT_MESSAGE("Did not find the daughter 3 particle: " << tDaughter3);
641 PRINT_MESSAGE("Not adding channel");
642 in2.getline(str1,200);
643 continue;
644 }
645
646 strcpy(tFather,str);
647 PRINT_DEBUG_2(tFather<<"\t"<<tDaughter1<<"\t"<<tDaughter2<<"\t");
648 if ((*tDaughter3>65)&&(*tDaughter3<122)) // check if first char is a letter - if yes then 3-body decay
649 {
650 in2>>tBRatio>>CGcoeff;
651 PRINT_DEBUG_2(tDaughter3<<" (3-body decay)\t");
652 if (mDB->ExistsParticleType(tFather)) {
653 mDB->GetParticleType(tFather)->SetDecayChannelCount3(mDB->GetParticleType(tFather)->GetDecayChannelCount3()+1);
654
655 tRatio=tBRatio;
656 DecayChannel *newChannel = new DecayChannel(tRatio, mDB->GetParticleTypeIndex(tDaughter1), mDB->GetParticleTypeIndex(tDaughter2), mDB->GetParticleTypeIndex(tDaughter3));
657 if (mDB->GetParticleType(tDaughter1)->GetMass() +
658 mDB->GetParticleType(tDaughter2)->GetMass() +
659 mDB->GetParticleType(tDaughter3)->GetMass()
660 < mDB->GetParticleType(tFather)->GetMass())
661 (mDB->GetParticleType(tFather))->AddDecayChannel(*newChannel);
09b7c66c 662
663 delete newChannel;
2e967919 664
665 tRatio=tBRatio;
666 PRINT_DEBUG_2(tBRatio << '\t' << tRatio);
667 }
668 else {
669 PRINT_MESSAGE("Did not find the father particle: " << tFather);
670 PRINT_MESSAGE("Not adding channel");
671 }
672 }
673 else // 2-body decay
674 {
675 tBRatio=atof(tDaughter3);
676
677 in2>>CGcoeff;
678 PRINT_DEBUG_2(" (2-body decay)\t");
679 if (mDB->ExistsParticleType(tFather)) {
680 mDB->GetParticleType(tFather)->SetDecayChannelCount2(mDB->GetParticleType(tFather)->GetDecayChannelCount2()+1);
681
682 // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
683 if (CGcoeff) // complete branching ratio by Clebsch-Gordan coefficient
684 {
685 double j1, m1, j2, m2, J, M, CB;
686 J=mDB->GetParticleType(tFather)->GetI();
687 M=mDB->GetParticleType(tFather)->GetI3();
688 j1=mDB->GetParticleType(tDaughter1)->GetI();
689 m1=mDB->GetParticleType(tDaughter1)->GetI3();
690 j2=mDB->GetParticleType(tDaughter2)->GetI();
691 m2=mDB->GetParticleType(tDaughter2)->GetI3();
692 PRINT_DEBUG_2(" "<<J<<" "<<M<<" "<<j1<<" "<<m1<<" "<<j2<<" "<<m2);
693
694 CB = ClebschGordan(J, M, j1, m1, j2, m2);
695 tRatio = CB*CB * tBRatio;
696
697 // Multiply the Clebsh by two?
698 // The same spin, mass, strangeness
699 // and different I3?
700 if ((fabs(mDB->GetParticleType(tDaughter1)->GetSpin() - mDB->GetParticleType(tDaughter2)->GetSpin()) < 0.01) &&
701 (fabs(mDB->GetParticleType(tDaughter1)->GetMass() - mDB->GetParticleType(tDaughter2)->GetMass()) < 0.01) &&
702 (mDB->GetParticleType(tDaughter1)->GetStrangeness() == mDB->GetParticleType(tDaughter2)->GetStrangeness()) &&
703 (fabs(mDB->GetParticleType(tDaughter1)->GetI3() - mDB->GetParticleType(tDaughter2)->GetI3()) > 0.01))
704 {
705 PRINT_DEBUG_2("Multuplying Clebsch by two for " << tFather << "->" << tDaughter1 << "+" << tDaughter2);
706 tRatio *= 2.0;
707 }
708
709 PRINT_DEBUG_2(CB << '\t' << tBRatio << '\t' << tRatio<<"\t"<<CGcoeff);
710 }
711
712 else
713 {
714 tRatio=tBRatio;
715 PRINT_DEBUG_2(tBRatio << '\t' << tRatio);
716 }
717 DecayChannel *newChannel = new DecayChannel(tRatio, mDB->GetParticleTypeIndex(tDaughter1), mDB->GetParticleTypeIndex(tDaughter2), -1);
718 if (mDB->GetParticleType(tDaughter1)->GetMass() +
719 mDB->GetParticleType(tDaughter2)->GetMass()
720 < mDB->GetParticleType(tFather)->GetMass())
721 {
722 (mDB->GetParticleType(tFather))->AddDecayChannel(*newChannel);
723 PRINT_DEBUG_2("Added channel " << newChannel << " " << mDB->GetParticleTypeIndex(tFather) << " " << mDB->GetParticleTypeIndex(tDaughter1) << " " << mDB->GetParticleTypeIndex(tDaughter2));
6750cf94 724 delete newChannel;
2e967919 725 }
726 else
727 {
728
729 PRINT_DEBUG_2("Masses do not match! Not adding channel " << newChannel);
d58024dc 730
731 delete newChannel;
2e967919 732 }
733 }
734 else {
735 PRINT_MESSAGE("Did not find the father particle: " << tFather);
736 PRINT_MESSAGE("Not adding channel");
737 }
738 }
739 }
740 in2.close();
741 }
742 else {
743 PRINT_MESSAGE("File "<<(mInputDir+"/decays.data").Data()<<" with particle decay channels not found!");
744 PRINT_MESSAGE("No particle decays will be simulated");
745 }
746}
747
748double
749Parser::ClebschGordan(double aJot, double aEm, double aJot1, double aEm1, double aJot2, double aEm2)
750{
751 int mint, maxt;
752 double cgc = 0.0;
753 int titer;
754 double coef;
755
756 maxt = lrint(aJot1 + aJot2 - aJot);
757 mint = 0;
758 if (lrint(aJot1 - aEm1) < maxt) maxt = lrint(aJot1 - aEm1);
759 if (lrint(aJot2 + aEm2) < maxt) maxt = lrint(aJot2 + aEm2);
760 if (lrint(-(aJot-aJot2+aEm1)) > mint) mint = lrint(-(aJot-aJot2+aEm1));
761 if (lrint(-(aJot-aJot1-aEm2)) > mint) mint = lrint(-(aJot-aJot1-aEm2));
762
763 PRINT_DEBUG_3("mint " << mint << " " << aJot1 << " " << aEm1);
764 PRINT_DEBUG_3("maxt " << maxt << " " << aJot2 << " " << aEm2);
765
766 for (titer = mint; titer<=maxt; titer ++)
767 {
768 coef = TMath::Power(-1, titer);
769 PRINT_DEBUG_3("coef1 " << coef);
770 coef *= TMath::Sqrt((2*aJot+1)*
771 factorials[lrint(aJot1+aEm1)] *
772 factorials[lrint(aJot1-aEm1)] *
773 factorials[lrint(aJot2+aEm2)] *
774 factorials[lrint(aJot2-aEm2)] *
775 factorials[lrint(aJot+aEm)] *
776 factorials[lrint(aJot-aEm)]);
777 PRINT_DEBUG_3("coef2 " << coef);
778 coef /= (factorials[titer] *
779 factorials[lrint(aJot1+aJot2-aJot-titer)] *
780 factorials[lrint(aJot1-aEm1-titer)] *
781 factorials[lrint(aJot2+aEm2-titer)] *
782 factorials[lrint(aJot-aJot2+aEm1+titer)] *
783 factorials[lrint(aJot-aJot1-aEm2+titer)]);
784 PRINT_DEBUG_3("coef3 " << coef);
785
786 cgc += coef;
787 }
788
789 cgc *= DeltaJ(aJot1, aJot2, aJot);
790
791 return cgc;
792}
793
794double
795Parser::DeltaJ(double aJot1, double aJot2, double aJot)
796{
797 double res = TMath::Sqrt(1.0 *
798 factorials[lrint(aJot1+aJot2-aJot)] *
799 factorials[lrint(aJot1-aJot2+aJot)] *
800 factorials[lrint(-aJot1+aJot2+aJot)] /
801 factorials[lrint(aJot1+aJot2+aJot+1)]);
802
803 return res;
804}
805
806void
807Parser::ReadParameters()
808{
809 // Read the input directory
810 try {
811 mInputDir = sRPInstance->getPar("InputDirSHARE");
812 }
813 catch (STR tError) {
814 PRINT_DEBUG_1("Parser::ReadParameters - Caught exception " << tError);
815 PRINT_MESSAGE("Did not find SHARE input file location.");
816 PRINT_MESSAGE("Using default: '../share'");
817 mInputDir = "../share";
818 }
819}