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25 // 25 //
26 // 26 //
27 // 27 //
28 // ------------------------------------------- 28 // -----------------------------------------------------------------------------
29 // GEANT 4 class implementation file 29 // GEANT 4 class implementation file
30 // 30 //
31 // History: first implementation, Maxim K 31 // History: first implementation, Maxim Komogorov, 10-Jul-1998
32 // ------------------------------------------- 32 // -----------------------------------------------------------------------------
33 #include "G4QGSMFragmentation.hh" 33 #include "G4QGSMFragmentation.hh"
34 #include "G4PhysicalConstants.hh" 34 #include "G4PhysicalConstants.hh"
35 #include "G4SystemOfUnits.hh" 35 #include "G4SystemOfUnits.hh"
36 #include "Randomize.hh" 36 #include "Randomize.hh"
37 #include "G4ios.hh" 37 #include "G4ios.hh"
38 #include "G4FragmentingString.hh" 38 #include "G4FragmentingString.hh"
39 #include "G4DiQuarks.hh" 39 #include "G4DiQuarks.hh"
40 #include "G4Quarks.hh" 40 #include "G4Quarks.hh"
41 #include "G4HadronicParameters.hh" << 41
42 #include "G4Pow.hh" 42 #include "G4Pow.hh"
43 43
44 //#define debug_QGSMfragmentation 44 //#define debug_QGSMfragmentation
45 45
46 // Class G4QGSMFragmentation 46 // Class G4QGSMFragmentation
47 //******************************************** 47 //****************************************************************************************
48 48
49 G4QGSMFragmentation::G4QGSMFragmentation() 49 G4QGSMFragmentation::G4QGSMFragmentation()
50 { 50 {
51 SigmaQT = 0.45 * GeV; <<
52 <<
53 MassCut = 0.35*GeV; 51 MassCut = 0.35*GeV;
54 52
55 SetStrangenessSuppression((1.0 - 0.16)/2.) 53 SetStrangenessSuppression((1.0 - 0.16)/2.);
56 54
57 // Check if charmed and bottom hadrons are << 55 // For the time being, set to 0.0 the probabilities for c-cbar and b-bbar creation.
58 // set the non-zero probabilities for c-cb << 56 SetProbCCbar(0.0); //(0.0033); // According to O.I. Piskunova Yad. Fiz. 56 (1993) 1094
59 // else set them to 0.0. If these probabil << 57 SetProbBBbar(0.0); //(5.0e-5); // According to O.I. Piskunova Yad. Fiz. 56 (1993) 1094
60 // hadrons can't/can be created during the << 58
61 // (i.e. not heavy) projectile hadron nucl <<
62 if ( G4HadronicParameters::Instance()->Ena <<
63 SetProbCCbar(0.0002); // According to O <<
64 SetProbBBbar(5.0e-5); // According to O <<
65 } else { <<
66 SetProbCCbar(0.0); <<
67 SetProbBBbar(0.0); <<
68 } <<
69 <<
70 SetDiquarkSuppression(0.32); 59 SetDiquarkSuppression(0.32);
71 SetDiquarkBreakProbability(0.7); 60 SetDiquarkBreakProbability(0.7);
72 61
73 SetMinMasses(); 62 SetMinMasses();
74 63
75 arho = 0.5; // alpha_rho0 64 arho = 0.5; // alpha_rho0
76 aphi = 0.0; // alpha_fi 65 aphi = 0.0; // alpha_fi
77 aJPs =-2.2; // alpha_J/Psi 66 aJPs =-2.2; // alpha_J/Psi
78 aUps =-8.0; // alpha_Y ??? O. Pisk 67 aUps =-8.0; // alpha_Y ??? O. Piskunova Yad. Phys. 56 (1993) 1094.
79 68
80 aksi =-1.0; 69 aksi =-1.0;
81 alft = 0.5; // 2 * alpha'_R *<Pt^2> 70 alft = 0.5; // 2 * alpha'_R *<Pt^2>
82 71
83 an = -0.5 ; 72 an = -0.5 ;
84 ala = -0.75; // an - arho/2 + aphi/2 73 ala = -0.75; // an - arho/2 + aphi/2
85 alaC = an - arho/2.0 + aJPs/2.0; 74 alaC = an - arho/2.0 + aJPs/2.0;
86 alaB = an - arho/2.0 + aUps/2.0; 75 alaB = an - arho/2.0 + aUps/2.0;
87 aXi = 0.0; // ?? 76 aXi = 0.0; // ??
88 aXiC = 0.0; // ?? 77 aXiC = 0.0; // ??
89 aXiB = 0.0; // ?? 78 aXiB = 0.0; // ??
90 aXiCC = 0.0; // ?? 79 aXiCC = 0.0; // ??
91 aXiCB = 0.0; // ?? 80 aXiCB = 0.0; // ??
92 aXiBB = 0.0; // ?? 81 aXiBB = 0.0; // ??
93 82
94 SetFFq2q(); 83 SetFFq2q();
95 SetFFq2qq(); 84 SetFFq2qq();
96 SetFFqq2q(); 85 SetFFqq2q();
97 SetFFqq2qq(); 86 SetFFqq2qq();
98 // d u s c b 87 // d u s c b
99 G4int Index[5][5] = { { 0, 1, 2, 3, 4 } 88 G4int Index[5][5] = { { 0, 1, 2, 3, 4 }, // d
100 { 1, 5, 6, 7, 8 } 89 { 1, 5, 6, 7, 8 }, // u
101 { 2, 6, 9, 10, 11 } 90 { 2, 6, 9, 10, 11 }, // s
102 { 3, 7, 10, 12, 13 } 91 { 3, 7, 10, 12, 13 }, // c
103 { 4, 8, 11, 13, 14 } 92 { 4, 8, 11, 13, 14 } }; // b
104 for (G4int i = 0; i < 5; i++ ) { 93 for (G4int i = 0; i < 5; i++ ) {
105 for ( G4int j = 0; j < 5; j++ ) { 94 for ( G4int j = 0; j < 5; j++ ) {
106 IndexDiQ[i][j] = Index[i][j]; 95 IndexDiQ[i][j] = Index[i][j];
107 } 96 }
108 }; 97 };
109 } 98 }
110 99
111 G4QGSMFragmentation::~G4QGSMFragmentation() 100 G4QGSMFragmentation::~G4QGSMFragmentation()
112 {} 101 {}
113 102
114 //-------------------------------------------- 103 //----------------------------------------------------------------------------------------------------------
115 104
116 G4KineticTrackVector* G4QGSMFragmentation::Fra 105 G4KineticTrackVector* G4QGSMFragmentation::FragmentString(const G4ExcitedString& theString)
117 { 106 {
118 107
119 G4FragmentingString aString(theString); 108 G4FragmentingString aString(theString);
120 SetMinimalStringMass(&aString); 109 SetMinimalStringMass(&aString);
121 110
122 #ifdef debug_QGSMfragmentation 111 #ifdef debug_QGSMfragmentation
123 G4cout<<G4endl<<"QGSM StringFragm: String Ma 112 G4cout<<G4endl<<"QGSM StringFragm: String Mass "
124 <<theString.Get4M 113 <<theString.Get4Momentum().mag()<<" Pz "
125 <<theString.Get4M 114 <<theString.Get4Momentum().pz()
126 <<"-------------- 115 <<"------------------------------------"<<G4endl;
127 G4cout<<"String ends Direct "<<theString.Get 116 G4cout<<"String ends Direct "<<theString.GetLeftParton()->GetPDGcode()<<" "
128 <<theString.Get 117 <<theString.GetRightParton()->GetPDGcode()<<" "
129 <<theString.Get 118 <<theString.GetDirection()<< G4endl;
130 G4cout<<"Left mom "<<theString.GetLeftParto 119 G4cout<<"Left mom "<<theString.GetLeftParton()->Get4Momentum()<<G4endl;
131 G4cout<<"Right mom "<<theString.GetRightPart 120 G4cout<<"Right mom "<<theString.GetRightParton()->Get4Momentum()<<G4endl;
132 G4cout<<"Check for Fragmentation "<<G4endl; 121 G4cout<<"Check for Fragmentation "<<G4endl;
133 #endif 122 #endif
134 123
135 // Can no longer modify Parameters for Fragm 124 // Can no longer modify Parameters for Fragmentation.
136 PastInitPhase=true; 125 PastInitPhase=true;
137 126
138 // Check if string has enough mass to fragme 127 // Check if string has enough mass to fragment...
139 G4KineticTrackVector * LeftVector=NULL; 128 G4KineticTrackVector * LeftVector=NULL;
140 129
141 if ( !IsItFragmentable(&aString) ) { 130 if ( !IsItFragmentable(&aString) ) {
142 LeftVector=ProduceOneHadron(&theString); 131 LeftVector=ProduceOneHadron(&theString);
143 132
144 #ifdef debug_QGSMfragmentation 133 #ifdef debug_QGSMfragmentation
145 if ( LeftVector != 0 ) G4cout<<"Non fragm 134 if ( LeftVector != 0 ) G4cout<<"Non fragmentable - the string is converted to one hadron "<<G4endl;
146 #endif 135 #endif
147 136
148 if ( LeftVector == nullptr ) LeftVector = << 137 if ( LeftVector != 0 ) return LeftVector;
149 return LeftVector; <<
150 } 138 }
151 139
152 #ifdef debug_QGSMfragmentation 140 #ifdef debug_QGSMfragmentation
153 G4cout<<"The string will be fragmented. "<<G 141 G4cout<<"The string will be fragmented. "<<G4endl;
154 #endif 142 #endif
155 143
156 LeftVector = new G4KineticTrackVector; 144 LeftVector = new G4KineticTrackVector;
157 G4KineticTrackVector * RightVector=new G4Kin 145 G4KineticTrackVector * RightVector=new G4KineticTrackVector;
158 146
159 G4ExcitedString *theStringInCMS=CopyExcited( 147 G4ExcitedString *theStringInCMS=CopyExcited(theString);
160 G4LorentzRotation toCms=theStringInCMS->Tran 148 G4LorentzRotation toCms=theStringInCMS->TransformToAlignedCms();
161 149
162 G4bool success=false, inner_sucess=true; 150 G4bool success=false, inner_sucess=true;
163 G4int attempt=0; 151 G4int attempt=0;
164 while ( !success && attempt++ < StringLoopIn 152 while ( !success && attempt++ < StringLoopInterrupt ) /* Loop checking, 07.08.2015, A.Ribon */
165 { 153 {
166 #ifdef debug_QGSMfragmentation 154 #ifdef debug_QGSMfragmentation
167 G4cout<<"Loop_toFrag "<<theStr 155 G4cout<<"Loop_toFrag "<<theStringInCMS->GetLeftParton()->GetPDGcode()<<" "
168 <<theStr 156 <<theStringInCMS->GetRightParton()->GetPDGcode()<<" "
169 <<theStr 157 <<theStringInCMS->GetDirection()<< G4endl;
170 #endif 158 #endif
171 159
172 G4FragmentingString *currentString=new G4F 160 G4FragmentingString *currentString=new G4FragmentingString(*theStringInCMS);
173 161
174 std::for_each(LeftVector->begin(), LeftVec 162 std::for_each(LeftVector->begin(), LeftVector->end(), DeleteKineticTrack());
175 LeftVector->clear(); 163 LeftVector->clear();
176 std::for_each(RightVector->begin(), RightV 164 std::for_each(RightVector->begin(), RightVector->end(), DeleteKineticTrack());
177 RightVector->clear(); 165 RightVector->clear();
178 166
179 inner_sucess=true; // set false on failur 167 inner_sucess=true; // set false on failure..
180 const G4int maxNumberOfLoops = 168 const G4int maxNumberOfLoops = 1000;
181 G4int loopCounter = -1; 169 G4int loopCounter = -1;
182 while (! StopFragmenting(currentString) && 170 while (! StopFragmenting(currentString) && ++loopCounter < maxNumberOfLoops ) /* Loop checking, 07.08.2015, A.Ribon */
183 { // Split current string into hadron + n 171 { // Split current string into hadron + new string
184 172
185 #ifdef debug_QGSMfragm 173 #ifdef debug_QGSMfragmentation
186 G4cout<<"The string ca 174 G4cout<<"The string can fragment. "<<G4endl;;
187 #endif 175 #endif
188 G4FragmentingString *newString=0; // us 176 G4FragmentingString *newString=0; // used as output from SplitUp...
189 G4KineticTrack * Hadron=Splitup(currentS 177 G4KineticTrack * Hadron=Splitup(currentString,newString);
190 178
191 if ( Hadron != 0 ) 179 if ( Hadron != 0 )
192 { 180 {
193 #ifdef debug_QGSMfr 181 #ifdef debug_QGSMfragmentation
194 G4cout<<"Hadron pro 182 G4cout<<"Hadron prod at fragm. "<<Hadron->GetDefinition()->GetParticleName()<<G4endl;
195 #endif 183 #endif
196 // To close the pro 184 // To close the production of hadrons at fragmentation stage
197 if ( currentString->GetDecayDirection 185 if ( currentString->GetDecayDirection() > 0 )
198 LeftVector->push_back(Hadron); 186 LeftVector->push_back(Hadron);
199 else 187 else
200 RightVector->push_back(Hadron); 188 RightVector->push_back(Hadron);
201 189
202 delete currentString; 190 delete currentString;
203 currentString=newString; 191 currentString=newString;
204 192
205 } else { 193 } else {
206 194
207 #ifdef debug_QGSMfr 195 #ifdef debug_QGSMfragmentation
208 G4cout<<"abandon .. 196 G4cout<<"abandon ... start from the beginning ---------------"<<G4endl;
209 #endif 197 #endif
210 198
211 // Abandon ... start from the beginni 199 // Abandon ... start from the beginning
212 if (newString) delete newString; 200 if (newString) delete newString;
213 inner_sucess=false; 201 inner_sucess=false;
214 break; 202 break;
215 } 203 }
216 } 204 }
217 if ( loopCounter >= maxNumberO 205 if ( loopCounter >= maxNumberOfLoops ) {
218 inner_sucess=false; 206 inner_sucess=false;
219 } 207 }
220 208
221 // Split current string into 2 final Hadro 209 // Split current string into 2 final Hadrons
222 #ifdef debug_QGSMfragmentation 210 #ifdef debug_QGSMfragmentation
223 if( inner_sucess ) { << 211 G4cout<<"Split remaining string into 2 final hadrons."<<G4endl;
224 G4cout<<"Split remaining str <<
225 } else { <<
226 G4cout<<" New attempt to fragment string <<
227 } <<
228 #endif 212 #endif
229 // To the close production of 213 // To the close production of hadrons at last string decay
230 if ( inner_sucess && 214 if ( inner_sucess &&
231 SplitLast(currentString,LeftVector, R 215 SplitLast(currentString,LeftVector, RightVector) )
232 { 216 {
233 success=true; 217 success=true;
234 } 218 }
235 delete currentString; 219 delete currentString;
236 } 220 }
237 221
238 delete theStringInCMS; 222 delete theStringInCMS;
239 223
240 if ( ! success ) 224 if ( ! success )
241 { 225 {
242 std::for_each(LeftVector->begin(), LeftVec 226 std::for_each(LeftVector->begin(), LeftVector->end(), DeleteKineticTrack());
243 LeftVector->clear(); 227 LeftVector->clear();
244 std::for_each(RightVector->begin(), RightV 228 std::for_each(RightVector->begin(), RightVector->end(), DeleteKineticTrack());
245 delete RightVector; 229 delete RightVector;
246 return LeftVector; 230 return LeftVector;
247 } 231 }
248 232
249 // Join Left- and RightVector into LeftVecto 233 // Join Left- and RightVector into LeftVector in correct order.
250 while(!RightVector->empty()) /* Loop checki 234 while(!RightVector->empty()) /* Loop checking, 07.08.2015, A.Ribon */
251 { 235 {
252 LeftVector->push_back(RightVector->back( 236 LeftVector->push_back(RightVector->back());
253 RightVector->erase(RightVector->end()-1) 237 RightVector->erase(RightVector->end()-1);
254 } 238 }
255 delete RightVector; 239 delete RightVector;
256 240
257 CalculateHadronTimePosition(theString.Get4Mo 241 CalculateHadronTimePosition(theString.Get4Momentum().mag(), LeftVector);
258 242
259 G4LorentzRotation toObserverFrame(toCms.inve 243 G4LorentzRotation toObserverFrame(toCms.inverse());
260 244
261 for (size_t C1 = 0; C1 < LeftVector->size(); 245 for (size_t C1 = 0; C1 < LeftVector->size(); C1++)
262 { 246 {
263 G4KineticTrack* Hadron = LeftVector->oper 247 G4KineticTrack* Hadron = LeftVector->operator[](C1);
264 G4LorentzVector Momentum = Hadron->Get4Mo 248 G4LorentzVector Momentum = Hadron->Get4Momentum();
265 Momentum = toObserverFrame*Momentum; 249 Momentum = toObserverFrame*Momentum;
266 Hadron->Set4Momentum(Momentum); 250 Hadron->Set4Momentum(Momentum);
267 G4LorentzVector Coordinate(Hadron->GetPos 251 G4LorentzVector Coordinate(Hadron->GetPosition(), Hadron->GetFormationTime());
268 Momentum = toObserverFrame*Coordinate; 252 Momentum = toObserverFrame*Coordinate;
269 Hadron->SetFormationTime(Momentum.e()); 253 Hadron->SetFormationTime(Momentum.e());
270 G4ThreeVector aPosition(Momentum.vect()); 254 G4ThreeVector aPosition(Momentum.vect());
271 Hadron->SetPosition(theString.GetPosition 255 Hadron->SetPosition(theString.GetPosition()+aPosition);
272 } 256 }
273 return LeftVector; 257 return LeftVector;
274 } 258 }
275 259
276 //-------------------------------------------- 260 //----------------------------------------------------------------------------------------------------------
277 261
278 G4bool G4QGSMFragmentation::IsItFragmentable(c << 262 G4bool G4QGSMFragmentation::IsItFragmentable(const G4FragmentingString * const string)
279 { 263 {
280 return sqr( MinimalStringMass + MassCut ) < << 264 return sqr( PossibleHadronMass(string) + MassCut ) < string->Mass2();
281 } 265 }
282 266
283 //-------------------------------------------- 267 //----------------------------------------------------------------------------------------------------------
284 268
285 G4bool G4QGSMFragmentation::StopFragmenting(co << 269 G4bool G4QGSMFragmentation::StopFragmenting(const G4FragmentingString * const string)
286 { 270 {
287 SetMinimalStringMass(string); 271 SetMinimalStringMass(string);
288 if ( MinimalStringMass < 0.0 ) return 272 if ( MinimalStringMass < 0.0 ) return true;
289 273
290 G4double smass = string->Mass(); << 274 if (string->IsAFourQuarkString())
291 G4double x = (string->IsAFourQuarkString()) << 275 {
292 : 0.66e-6*(smass - MinimalStringMass)*(sma << 276 return G4UniformRand() < G4Exp(-0.005*(string->Mass() - MinimalStringMass));
293 << 277 } else {
294 G4bool res = true; << 278 G4bool Result = G4UniformRand() <
295 if(x > 0.0) { << 279 G4Exp(-0.66e-6*(string->Mass()*string->Mass() - MinimalStringMass*MinimalStringMass));
296 res = (x < 200.) ? (G4UniformRand() << 280 // G4bool Result = string->Mass() < MinimalStringMass + 150.*MeV*G4UniformRand(); // a'la LUND
>> 281
>> 282 #ifdef debug_QGSMfragmentation
>> 283 G4cout<<"StopFragmenting MinimalStringMass string->Mass() "<<MinimalStringMass<<" "<<string->Mass()<<G4endl;
>> 284 G4cout<<"StopFragmenting - Yes/No "<<Result<<G4endl;
>> 285 #endif
>> 286 return Result;
297 } 287 }
298 return res; <<
299 } 288 }
300 289
301 //-------------------------------------------- 290 //-----------------------------------------------------------------------------
302 291
303 G4KineticTrack * G4QGSMFragmentation::Splitup( 292 G4KineticTrack * G4QGSMFragmentation::Splitup( G4FragmentingString *string,
304 G4FragmentingStri 293 G4FragmentingString *&newString )
305 { 294 {
306 #ifdef debug_QGSMfragmentation 295 #ifdef debug_QGSMfragmentation
307 G4cout<<G4endl; 296 G4cout<<G4endl;
308 G4cout<<"Start SplitUP (G4VLongitudinal 297 G4cout<<"Start SplitUP (G4VLongitudinalStringDecay) ========================="<<G4endl;
309 G4cout<<"String partons: " <<string->Ge 298 G4cout<<"String partons: " <<string->GetLeftParton()->GetPDGEncoding()<<" "
310 <<string->Ge 299 <<string->GetRightParton()->GetPDGEncoding()<<" "
311 <<"Direction " <<string->Ge 300 <<"Direction " <<string->GetDecayDirection()<<G4endl;
312 #endif 301 #endif
313 302
314 //... random choice of string end to us 303 //... random choice of string end to use for creating the hadron (decay)
315 G4int SideOfDecay = (G4UniformRand() < 304 G4int SideOfDecay = (G4UniformRand() < 0.5)? 1: -1;
316 if (SideOfDecay < 0) 305 if (SideOfDecay < 0)
317 { 306 {
318 string->SetLeftPartonStable(); 307 string->SetLeftPartonStable();
319 } else 308 } else
320 { 309 {
321 string->SetRightPartonStable(); 310 string->SetRightPartonStable();
322 } 311 }
323 312
324 G4ParticleDefinition *newStringEnd; 313 G4ParticleDefinition *newStringEnd;
325 G4ParticleDefinition * HadronDefinition 314 G4ParticleDefinition * HadronDefinition;
326 if (string->DecayIsQuark()) 315 if (string->DecayIsQuark())
327 { 316 {
328 G4double ProbDqADq = GetDiquarkSuppress(); 317 G4double ProbDqADq = GetDiquarkSuppress();
329 318
330 G4int NumberOfpossibleBaryons = 2; 319 G4int NumberOfpossibleBaryons = 2;
331 320
332 if (string->GetLeftParton()->GetParticleSu 321 if (string->GetLeftParton()->GetParticleSubType() != "quark") NumberOfpossibleBaryons++;
333 if (string->GetRightParton()->GetParticleS 322 if (string->GetRightParton()->GetParticleSubType() != "quark") NumberOfpossibleBaryons++;
334 323
335 G4double ActualProb = ProbDqADq ; 324 G4double ActualProb = ProbDqADq ;
336 ActualProb *= (1.0-G4Exp(2.0*(1.0 - 325 ActualProb *= (1.0-G4Exp(2.0*(1.0 - string->Mass()/(NumberOfpossibleBaryons*1400.0))));
337 326
338 SetDiquarkSuppression(ActualProb); 327 SetDiquarkSuppression(ActualProb);
339 328
340 HadronDefinition= QuarkSplitup(strin 329 HadronDefinition= QuarkSplitup(string->GetDecayParton(), newStringEnd);
341 330
342 SetDiquarkSuppression(ProbDqADq); 331 SetDiquarkSuppression(ProbDqADq);
343 } else { 332 } else {
344 HadronDefinition= DiQuarkSplitup(str 333 HadronDefinition= DiQuarkSplitup(string->GetDecayParton(), newStringEnd);
345 } 334 }
346 335
347 if ( HadronDefinition == NULL ) return 336 if ( HadronDefinition == NULL ) return NULL;
348 337
349 #ifdef debug_QGSMfragmentation 338 #ifdef debug_QGSMfragmentation
350 G4cout<<"The parton "<<string->GetDecay 339 G4cout<<"The parton "<<string->GetDecayParton()->GetPDGEncoding()<<" "
351 <<" produces hadron "<<HadronDefi 340 <<" produces hadron "<<HadronDefinition->GetParticleName()
352 <<" and is transformed to "<<newS 341 <<" and is transformed to "<<newStringEnd->GetPDGEncoding()<<G4endl;
353 G4cout<<"The side of the string decay L 342 G4cout<<"The side of the string decay Left/Right (1/-1) "<<SideOfDecay<<G4endl;
354 #endif 343 #endif
355 // create new String from old, ie. keep 344 // create new String from old, ie. keep Left and Right order, but replace decay
356 345
357 newString=new G4FragmentingString(*stri 346 newString=new G4FragmentingString(*string,newStringEnd); // To store possible
358 347 // quark containt of new string
359 348
360 #ifdef debug_QGSMfragmentation 349 #ifdef debug_QGSMfragmentation
361 G4cout<<"An attempt to determine its en 350 G4cout<<"An attempt to determine its energy (SplitEandP)"<<G4endl;
362 #endif 351 #endif
363 G4LorentzVector* HadronMomentum=SplitEa 352 G4LorentzVector* HadronMomentum=SplitEandP(HadronDefinition, string, newString);
364 353
365 delete newString; newString=0; 354 delete newString; newString=0;
366 355
367 G4KineticTrack * Hadron =0; 356 G4KineticTrack * Hadron =0;
368 if ( HadronMomentum != 0 ) { 357 if ( HadronMomentum != 0 ) {
369 358
370 #ifdef debug_QGSMfragmentation 359 #ifdef debug_QGSMfragmentation
371 G4cout<<"The attempt was successful 360 G4cout<<"The attempt was successful"<<G4endl;
372 #endif 361 #endif
373 G4ThreeVector Pos; 362 G4ThreeVector Pos;
374 Hadron = new G4KineticTrack(HadronDefinit 363 Hadron = new G4KineticTrack(HadronDefinition, 0,Pos, *HadronMomentum);
375 364
376 newString=new G4FragmentingString(*st 365 newString=new G4FragmentingString(*string,newStringEnd,HadronMomentum);
377 366
378 delete HadronMomentum; 367 delete HadronMomentum;
379 } 368 }
380 else 369 else
381 { 370 {
382 #ifdef debug_QGSMfragmentation 371 #ifdef debug_QGSMfragmentation
383 G4cout<<"The attempt was not successf 372 G4cout<<"The attempt was not successful !!!"<<G4endl;
384 #endif 373 #endif
385 } 374 }
386 375
387 #ifdef debug_VStringDecay 376 #ifdef debug_VStringDecay
388 G4cout<<"End SplitUP (G4VLongitudinalSt 377 G4cout<<"End SplitUP (G4VLongitudinalStringDecay) ====================="<<G4endl;
389 #endif 378 #endif
390 379
391 return Hadron; 380 return Hadron;
392 } 381 }
393 382
394 //-------------------------------------------- 383 //-----------------------------------------------------------------------------
395 384
396 G4ParticleDefinition *G4QGSMFragmentation::DiQ 385 G4ParticleDefinition *G4QGSMFragmentation::DiQuarkSplitup( G4ParticleDefinition* decay,
397 386 G4ParticleDefinition *&created )
398 { 387 {
399 //... can Diquark break or not? 388 //... can Diquark break or not?
400 if (G4UniformRand() < DiquarkBreakProb ) / 389 if (G4UniformRand() < DiquarkBreakProb ) //... Diquark break
401 { 390 {
402 G4int stableQuarkEncoding = decay->GetPD 391 G4int stableQuarkEncoding = decay->GetPDGEncoding()/1000;
403 G4int decayQuarkEncoding = (decay->GetPD 392 G4int decayQuarkEncoding = (decay->GetPDGEncoding()/100)%10;
404 393
405 if (G4UniformRand() < 0.5) 394 if (G4UniformRand() < 0.5)
406 { 395 {
407 G4int Swap = stableQuarkEncoding; 396 G4int Swap = stableQuarkEncoding;
408 stableQuarkEncoding = decayQuarkEncod 397 stableQuarkEncoding = decayQuarkEncoding;
409 decayQuarkEncoding = Swap; 398 decayQuarkEncoding = Swap;
410 } 399 }
411 400
412 G4int IsParticle=(decayQuarkEncoding>0) 401 G4int IsParticle=(decayQuarkEncoding>0) ? -1 : +1; // if we have a quark, we need antiquark
413 402
414 G4double StrSup=GetStrangeSuppress(); 403 G4double StrSup=GetStrangeSuppress();
415 SetStrangenessSuppression((1.0 - 0.07)/2 << 404 SetStrangenessSuppression((1.0 - 0.07)/2.);
416 pDefPair QuarkPair = CreatePartonPair(Is 405 pDefPair QuarkPair = CreatePartonPair(IsParticle,false); // no diquarks wanted
417 SetStrangenessSuppression(StrSup); 406 SetStrangenessSuppression(StrSup);
418 407
419 //... Build new Diquark 408 //... Build new Diquark
420 G4int QuarkEncoding=QuarkPair.second->Ge 409 G4int QuarkEncoding=QuarkPair.second->GetPDGEncoding();
421 G4int i10 = std::max(std::abs(QuarkEnco 410 G4int i10 = std::max(std::abs(QuarkEncoding), std::abs(stableQuarkEncoding));
422 G4int i20 = std::min(std::abs(QuarkEnco 411 G4int i20 = std::min(std::abs(QuarkEncoding), std::abs(stableQuarkEncoding));
423 G4int spin = (i10 != i20 && G4UniformRan 412 G4int spin = (i10 != i20 && G4UniformRand() <= 0.5)? 1 : 3;
424 G4int NewDecayEncoding = -1*IsParticle*( 413 G4int NewDecayEncoding = -1*IsParticle*(i10 * 1000 + i20 * 100 + spin);
425 <<
426 created = FindParticle(NewDecayEncoding) 414 created = FindParticle(NewDecayEncoding);
427 G4ParticleDefinition * decayQuark=FindPa 415 G4ParticleDefinition * decayQuark=FindParticle(decayQuarkEncoding);
428 G4ParticleDefinition * had=hadronizer->B 416 G4ParticleDefinition * had=hadronizer->Build(QuarkPair.first, decayQuark);
429 417
430 DecayQuark = decay->GetPDGEncoding(); << 418 DecayQuark = decayQuarkEncoding;
431 NewQuark = NewDecayEncoding; << 419 NewQuark = QuarkPair.first->GetPDGEncoding();
432 420
433 return had; 421 return had;
434 422
435 } else { //... Diquark does not break 423 } else { //... Diquark does not break
436 424
437 G4int IsParticle=(decay->GetPDGEncoding( 425 G4int IsParticle=(decay->GetPDGEncoding()>0) ? +1 : -1; // if we have a diquark, we need quark)
438 G4double StrSup=GetStrangeSuppress(); / 426 G4double StrSup=GetStrangeSuppress(); // for changing s-sbar production
439 SetStrangenessSuppression((1.0 - 0.07)/2 427 SetStrangenessSuppression((1.0 - 0.07)/2.);
440 pDefPair QuarkPair = CreatePartonPair(Is 428 pDefPair QuarkPair = CreatePartonPair(IsParticle,false); // no diquarks wanted
441 SetStrangenessSuppression(StrSup); 429 SetStrangenessSuppression(StrSup);
442 430
443 created = QuarkPair.second; 431 created = QuarkPair.second;
444 432
445 DecayQuark = decay->GetPDGEncoding(); 433 DecayQuark = decay->GetPDGEncoding();
446 NewQuark = created->GetPDGEncoding(); 434 NewQuark = created->GetPDGEncoding();
447 435
448 G4ParticleDefinition * had=hadronizer->B 436 G4ParticleDefinition * had=hadronizer->Build(QuarkPair.first, decay);
449 return had; 437 return had;
450 } 438 }
451 } 439 }
452 440
453 //-------------------------------------------- 441 //-----------------------------------------------------------------------------------------
454 442
455 G4LorentzVector * G4QGSMFragmentation::SplitEa 443 G4LorentzVector * G4QGSMFragmentation::SplitEandP(G4ParticleDefinition * pHadron,
456 444 G4FragmentingString * string,
457 445 G4FragmentingString * NewString)
458 { 446 {
459 G4double HadronMass = pHadron->GetPDGMa 447 G4double HadronMass = pHadron->GetPDGMass();
460 448
461 SetMinimalStringMass(NewString); 449 SetMinimalStringMass(NewString);
462 450
463 if ( MinimalStringMass < 0.0 ) return n 451 if ( MinimalStringMass < 0.0 ) return nullptr;
464 452
465 #ifdef debug_QGSMfragmentation 453 #ifdef debug_QGSMfragmentation
466 G4cout<<"G4QGSMFragmentation::SplitEand 454 G4cout<<"G4QGSMFragmentation::SplitEandP "<<pHadron->GetParticleName()<<G4endl;
467 G4cout<<"String 4 mom, String M "<<stri 455 G4cout<<"String 4 mom, String M "<<string->Get4Momentum()<<" "<<string->Mass()<<G4endl;
468 G4cout<<"HadM MinimalStringMassLeft Str 456 G4cout<<"HadM MinimalStringMassLeft StringM hM+sM "<<HadronMass<<" "<<MinimalStringMass<<" "
469 <<string->Mass()<<" "<<HadronMass 457 <<string->Mass()<<" "<<HadronMass+MinimalStringMass<<G4endl;
470 #endif 458 #endif
471 459
472 if (HadronMass + MinimalStringMass > st 460 if (HadronMass + MinimalStringMass > string->Mass())
473 { 461 {
474 #ifdef debug_QGSMfragmentation 462 #ifdef debug_QGSMfragmentation
475 G4cout<<"Mass of the string is not su 463 G4cout<<"Mass of the string is not sufficient to produce the hadron!"<<G4endl;
476 #endif 464 #endif
477 return 0; 465 return 0;
478 } // have to start all over! 466 } // have to start all over!
479 467
480 // calculate and assign hadron transver 468 // calculate and assign hadron transverse momentum component HadronPx andHadronPy
481 G4double StringMT2 = string->MassT2(); 469 G4double StringMT2 = string->MassT2();
482 G4double StringMT = std::sqrt(StringMT 470 G4double StringMT = std::sqrt(StringMT2);
483 471
484 G4LorentzVector String4Momentum = strin 472 G4LorentzVector String4Momentum = string->Get4Momentum();
485 String4Momentum.setPz(0.); 473 String4Momentum.setPz(0.);
486 G4ThreeVector StringPt = String4Momentu 474 G4ThreeVector StringPt = String4Momentum.vect();
487 475
488 G4ThreeVector HadronPt , RemSysPt; 476 G4ThreeVector HadronPt , RemSysPt;
489 G4double HadronMassT2, ResidualMas 477 G4double HadronMassT2, ResidualMassT2;
490 478
491 // Mt distribution is implemented <<
492 G4double HadronMt, Pt, Pt2, phi; <<
493 <<
494 //... sample Pt of the hadron 479 //... sample Pt of the hadron
495 G4int attempt=0; 480 G4int attempt=0;
496 do 481 do
497 { 482 {
498 attempt++; if (attempt > StringLoopIn 483 attempt++; if (attempt > StringLoopInterrupt) return 0;
499 484
500 HadronMt = HadronMass - 200.0*G4Log(G << 485 HadronPt =SampleQuarkPt() + string->DecayPt();
501 Pt2 = sqr(HadronMt)-sqr(HadronMass); <<
502 phi = 2.*pi*G4UniformRand(); <<
503 G4ThreeVector SampleQuarkPtw= G4Three <<
504 HadronPt =SampleQuarkPtw + string->D <<
505 HadronPt.setZ(0); 486 HadronPt.setZ(0);
506 RemSysPt = StringPt - HadronPt; 487 RemSysPt = StringPt - HadronPt;
507 488
508 HadronMassT2 = sqr(HadronMass) + Hadr 489 HadronMassT2 = sqr(HadronMass) + HadronPt.mag2();
509 ResidualMassT2=sqr(MinimalStringMass) 490 ResidualMassT2=sqr(MinimalStringMass) + RemSysPt.mag2();
510 491
511 } while (std::sqrt(HadronMassT2) + std: 492 } while (std::sqrt(HadronMassT2) + std::sqrt(ResidualMassT2) > StringMT); /* Loop checking, 07.08.2015, A.Ribon */
512 493
513 //... sample z to define hadron longit 494 //... sample z to define hadron longitudinal momentum and energy
514 //... but first check the available pha 495 //... but first check the available phase space
515 496
516 G4double Pz2 = (sqr(StringMT2 - HadronM 497 G4double Pz2 = (sqr(StringMT2 - HadronMassT2 - ResidualMassT2) -
517 4*HadronMassT2 * ResidualMassT2)/4./ 498 4*HadronMassT2 * ResidualMassT2)/4./StringMT2;
518 499
519 if ( Pz2 < 0 ) {return 0;} // 500 if ( Pz2 < 0 ) {return 0;} // have to start all over!
520 501
521 //... then compute allowed z region z_ 502 //... then compute allowed z region z_min <= z <= z_max
522 503
523 G4double Pz = std::sqrt(Pz2); 504 G4double Pz = std::sqrt(Pz2);
524 G4double zMin = (std::sqrt(HadronMassT2 505 G4double zMin = (std::sqrt(HadronMassT2+Pz2) - Pz)/std::sqrt(StringMT2);
525 G4double zMax = (std::sqrt(HadronMassT2 506 G4double zMax = (std::sqrt(HadronMassT2+Pz2) + Pz)/std::sqrt(StringMT2);
526 507
527 if (zMin >= zMax) return 0; // have 508 if (zMin >= zMax) return 0; // have to start all over!
528 509
529 G4double z = GetLightConeZ(zMin, zMax, 510 G4double z = GetLightConeZ(zMin, zMax,
530 string->GetDecayParton() 511 string->GetDecayParton()->GetPDGEncoding(), pHadron,
531 HadronPt.x(), HadronPt.y 512 HadronPt.x(), HadronPt.y());
532 513
533 //... now compute hadron longitudinal m 514 //... now compute hadron longitudinal momentum and energy
534 // longitudinal hadron momentum compone 515 // longitudinal hadron momentum component HadronPz
535 516
536 HadronPt.setZ( 0.5* string->GetDecayDir 517 HadronPt.setZ( 0.5* string->GetDecayDirection() *
537 (z * string->LightConeDecay() - 518 (z * string->LightConeDecay() -
538 HadronMassT2/(z * string->LightCone 519 HadronMassT2/(z * string->LightConeDecay())) );
539 G4double HadronE = 0.5* (z * string->L 520 G4double HadronE = 0.5* (z * string->LightConeDecay() +
540 HadronMassT2/(z * string->LightConeDe 521 HadronMassT2/(z * string->LightConeDecay()) );
541 522
542 G4LorentzVector * a4Momentum= new G4Lor 523 G4LorentzVector * a4Momentum= new G4LorentzVector(HadronPt,HadronE);
543 524
544 #ifdef debug_QGSMfragmentation 525 #ifdef debug_QGSMfragmentation
545 G4cout<<"string->GetDecayDirection() st 526 G4cout<<"string->GetDecayDirection() string->LightConeDecay() "
546 <<string->GetDecayDirection()<<" 527 <<string->GetDecayDirection()<<" "<<string->LightConeDecay()<<G4endl;
547 G4cout<<"HadronPt,HadronE "<<HadronPt<< 528 G4cout<<"HadronPt,HadronE "<<HadronPt<<" "<<HadronE<<G4endl;
548 G4cout<<"Out of QGSM SplitEandP "<<G4en 529 G4cout<<"Out of QGSM SplitEandP "<<G4endl;
549 #endif 530 #endif
550 531
551 return a4Momentum; 532 return a4Momentum;
552 } 533 }
553 534
554 //-------------------------------------------- 535 //----------------------------------------------------------------------------------------------------------
555 536
556 G4double G4QGSMFragmentation::GetLightConeZ(G4 << 537 G4double G4QGSMFragmentation::GetLightConeZ(G4double zmin, G4double zmax, G4int /* PartonEncoding */,
557 G4 << 538 G4ParticleDefinition* /* pHadron */, G4double , G4double )
558 { 539 {
559 G4double lambda = 2.0*(sqr(ptx)+sqr(pty))/sq <<
560 <<
561 #ifdef debug_QGSMfragmentation 540 #ifdef debug_QGSMfragmentation
562 G4cout<<"GetLightConeZ zmin zmax Parton pHad << 541 G4cout<<"GetLightConeZ zmin zmax Parton pHadron "<<zmin<<" "<<zmax<<" "<< /* PartonEncoding */
563 <<" "/*<< pHadron->GetParticleName() * << 542 <<" "<</* pHadron->GetParticleName() */ <<G4endl;
564 #endif 543 #endif
565 544
566 G4double z(0.); 545 G4double z(0.);
567 G4int DiQold(0), DiQnew(0); 546 G4int DiQold(0), DiQnew(0);
568 G4double d1(-1.0), d2(0.); 547 G4double d1(-1.0), d2(0.);
569 G4double invD1(0.),invD2(0.), r1(0.),r2(0.), 548 G4double invD1(0.),invD2(0.), r1(0.),r2(0.),r12(0.);
570 549
571 G4int absDecayQuarkCode = std::abs( DecayQua 550 G4int absDecayQuarkCode = std::abs( DecayQuark );
572 G4int absNewQuarkCode = std::abs( NewQuark 551 G4int absNewQuarkCode = std::abs( NewQuark );
573 552
574 G4int q1(0), q2(0); 553 G4int q1(0), q2(0);
575 // q1 = absDecayQuarkCode/1000; q2 = (absDe 554 // q1 = absDecayQuarkCode/1000; q2 = (absDecayQuarkCode % 1000)/100;
576 555
577 G4int qA(0), qB(0); 556 G4int qA(0), qB(0);
578 // qA = absNewQuarkCode/1000; qB = (absNe 557 // qA = absNewQuarkCode/1000; qB = (absNewQuarkCode % 1000)/100;
579 558
580 if ( (absDecayQuarkCode < 6) && (absNewQuark 559 if ( (absDecayQuarkCode < 6) && (absNewQuarkCode < 6) ) {
581 d1 = FFq2q[absDecayQuarkCode-1][absNewQuar 560 d1 = FFq2q[absDecayQuarkCode-1][absNewQuarkCode-1][0]; d2 = FFq2q[absDecayQuarkCode-1][absNewQuarkCode-1][1];
582 } 561 }
583 562
584 if ( (absDecayQuarkCode < 6) && (absNewQuark 563 if ( (absDecayQuarkCode < 6) && (absNewQuarkCode > 6) ) {
585 qA = absNewQuarkCode/1000; qB = (absNewQu 564 qA = absNewQuarkCode/1000; qB = (absNewQuarkCode % 1000)/100; DiQnew = IndexDiQ[qA-1][qB-1];
586 d1 = FFq2qq[absDecayQuarkCode-1][DiQnew][0] 565 d1 = FFq2qq[absDecayQuarkCode-1][DiQnew][0]; d2 = FFq2q[absDecayQuarkCode-1][DiQnew][1];
587 } 566 }
588 567
589 if ( (absDecayQuarkCode > 6) && (absNewQuark 568 if ( (absDecayQuarkCode > 6) && (absNewQuarkCode < 6) ) {
590 q1 = absDecayQuarkCode/1000; q2 = (absDeca 569 q1 = absDecayQuarkCode/1000; q2 = (absDecayQuarkCode % 1000)/100; DiQold = IndexDiQ[q1-1][q2-1];
591 d1 = FFqq2q[DiQold][absNewQuarkCode-1][0]; 570 d1 = FFqq2q[DiQold][absNewQuarkCode-1][0]; d2 = FFqq2q[DiQold][absNewQuarkCode-1][1];
592 } 571 }
593 572
594 if ( d1 < 0. ) { 573 if ( d1 < 0. ) {
595 q1 = absDecayQuarkCode/1000; q2 = (absDeca 574 q1 = absDecayQuarkCode/1000; q2 = (absDecayQuarkCode % 1000)/100; DiQold = IndexDiQ[q1-1][q2-1];
596 qA = absNewQuarkCode/1000; qB = (absNewQ << 575 d1 = FFqq2qq[DiQold][absNewQuarkCode-1][0]; d2 = FFqq2qq[DiQold][absNewQuarkCode-1][1];
597 d1 = FFqq2qq[DiQold][DiQnew][0]; d2 = FFqq <<
598 } 576 }
599 577
600 d2 +=lambda; <<
601 d1+=1.0; d2+=1.0; 578 d1+=1.0; d2+=1.0;
602 579
603 invD1=1./d1; invD2=1./d2; 580 invD1=1./d1; invD2=1./d2;
604 581
605 const G4int maxNumberOfLoops = 10000; 582 const G4int maxNumberOfLoops = 10000;
606 G4int loopCounter = 0; 583 G4int loopCounter = 0;
607 do // Jong's algorithm 584 do // Jong's algorithm
608 { 585 {
609 r1=G4Pow::GetInstance()->powA(G4UniformRan 586 r1=G4Pow::GetInstance()->powA(G4UniformRand(),invD1);
610 r2=G4Pow::GetInstance()->powA(G4UniformRan 587 r2=G4Pow::GetInstance()->powA(G4UniformRand(),invD2);
611 r12=r1+r2; 588 r12=r1+r2;
612 z=r1/r12; 589 z=r1/r12;
613 } while ( ( (r12 > 1.0) || !((zmin <= z)&&(z 590 } while ( ( (r12 > 1.0) || !((zmin <= z)&&(z <= zmax))) &&
614 ++loopCounter < maxNumberOfLoops ) 591 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 07.08.2015, A.Ribon */
615 592
616 if ( loopCounter >= maxNumberOfLoops ) { 593 if ( loopCounter >= maxNumberOfLoops ) {
617 z = 0.5*(zmin + zmax); // Just a value be 594 z = 0.5*(zmin + zmax); // Just a value between zmin and zmax, no physics considerations at all!
618 } 595 }
619 596
620 return z; 597 return z;
621 } 598 }
622 599
623 //-------------------------------------------- 600 //-----------------------------------------------------------------------------------------
624 601
625 G4bool G4QGSMFragmentation::SplitLast(G4Fragme 602 G4bool G4QGSMFragmentation::SplitLast(G4FragmentingString * string,
626 G4KineticTrackVector * Lef 603 G4KineticTrackVector * LeftVector,
627 G4KineticTrackVector * Right 604 G4KineticTrackVector * RightVector)
628 { 605 {
629 //... perform last cluster decay 606 //... perform last cluster decay
630 607
631 G4ThreeVector ClusterVel =string->Get4Mome 608 G4ThreeVector ClusterVel =string->Get4Momentum().boostVector();
632 G4double ResidualMass =string->Mass(); 609 G4double ResidualMass =string->Mass();
633 610
634 #ifdef debug_QGSMfragmentation 611 #ifdef debug_QGSMfragmentation
635 G4cout<<"Split last----------------------- 612 G4cout<<"Split last-----------------------------------------"<<G4endl;
636 G4cout<<"StrMass "<<ResidualMass<<" q's " 613 G4cout<<"StrMass "<<ResidualMass<<" q's "
637 <<string->GetLeftParton()->GetPartic 614 <<string->GetLeftParton()->GetParticleName()<<" "
638 <<string->GetRightParton()->GetParti 615 <<string->GetRightParton()->GetParticleName()<<G4endl;
639 #endif 616 #endif
640 617
641 G4int cClusterInterrupt = 0; <<
642 G4ParticleDefinition *LeftHadron = nullptr 618 G4ParticleDefinition *LeftHadron = nullptr;
643 G4ParticleDefinition *RightHadron = nullpt 619 G4ParticleDefinition *RightHadron = nullptr;
644 const G4int maxNumberOfLoops = 1000; 620 const G4int maxNumberOfLoops = 1000;
645 G4int loopCounter = 0; 621 G4int loopCounter = 0;
>> 622 G4bool isOK = false;
646 623
647 G4double LeftHadronMass(0.); G4double Righ 624 G4double LeftHadronMass(0.); G4double RightHadronMass(0.);
648 do 625 do
649 { 626 {
650 if (cClusterInterrupt++ >= ClusterLoop <<
651 LeftHadronMass = -MaxMass; RightHadron 627 LeftHadronMass = -MaxMass; RightHadronMass = -MaxMass;
652 628
653 G4ParticleDefinition * quark = nullptr; 629 G4ParticleDefinition * quark = nullptr;
654 string->SetLeftPartonStable(); // to query q 630 string->SetLeftPartonStable(); // to query quark contents..
655 631
656 if (string->DecayIsQuark() && string->Stable 632 if (string->DecayIsQuark() && string->StableIsQuark() )
657 { 633 {
658 //... there are quarks on cluster ends 634 //... there are quarks on cluster ends
659 635
660 G4int IsParticle=(string->GetLeftParton()- 636 G4int IsParticle=(string->GetLeftParton()->GetPDGEncoding()>0) ? -1 : +1;
661 // if we have a quark, we need 637 // if we have a quark, we need antiquark or diquark
662 638
663 pDefPair QuarkPair = CreatePartonPair(IsPa 639 pDefPair QuarkPair = CreatePartonPair(IsParticle);
664 quark = QuarkPair.second; 640 quark = QuarkPair.second;
665 641
666 LeftHadron= hadronizer->Build(QuarkPair.fi << 642 LeftHadron= hadronizer->BuildLowSpin(QuarkPair.first, string->GetLeftParton());
667 if ( LeftHadron == NULL ) continue; << 643 } else {
668 RightHadron = hadronizer->Build(stri << 644 //... there is a Diquark on cluster ends
669 if ( RightHadron == NULL ) continue; <<
670 } else if( (!string->DecayIsQuark() && stri <<
671 ( string->DecayIsQuark() && !stri <<
672 //... there is a Diquark on one of cluster <<
673 G4int IsParticle; 645 G4int IsParticle;
674 if ( string->StableIsQuark() ) { 646 if ( string->StableIsQuark() ) {
675 IsParticle=(string->GetLeftParton()->Get 647 IsParticle=(string->GetLeftParton()->GetPDGEncoding()>0) ? -1 : +1;
676 } else { 648 } else {
677 IsParticle=(string->GetLeftParton()->Get 649 IsParticle=(string->GetLeftParton()->GetPDGEncoding()>0) ? +1 : -1;
678 } 650 }
679 651
680 //G4double ProbSaS = 1.0 - 2.0 * G 652 //G4double ProbSaS = 1.0 - 2.0 * GetStrangeSuppress();
681 //G4double ActualProb = ProbSaS * 1. 653 //G4double ActualProb = ProbSaS * 1.4;
682 //SetStrangenessSuppression((1.0-Act 654 //SetStrangenessSuppression((1.0-ActualProb)/2.0);
683 655
684 pDefPair QuarkPair = CreatePartonPai 656 pDefPair QuarkPair = CreatePartonPair(IsParticle,false); // no diquarks wanted
685 //SetStrangenessSuppression((1.0-Pro 657 //SetStrangenessSuppression((1.0-ProbSaS)/2.0);
686 quark = QuarkPair.second; 658 quark = QuarkPair.second;
687 LeftHadron=hadronizer->Build(QuarkPa << 659 LeftHadron=hadronizer->BuildLowSpin(QuarkPair.first, string->GetLeftParton());
688 if ( LeftHadron == NULL ) continue; <<
689 RightHadron = hadronizer->Build(stri <<
690 if ( RightHadron == NULL ) continue; <<
691 } else { // Diquark and anti-diquark <<
692 if (cClusterInterrupt++ >= ClusterLo <<
693 G4int LeftQuark1= string->GetLeftPar <<
694 G4int LeftQuark2=(string->GetLeftPar <<
695 G4int RightQuark1= string->GetRightP <<
696 G4int RightQuark2=(string->GetRightP <<
697 if (G4UniformRand()<0.5) { <<
698 LeftHadron =hadronizer->Build(Fin <<
699 RightHadron =hadronizer->Build(Fin <<
700 } else { <<
701 LeftHadron =hadronizer->Build(Fin <<
702 RightHadron =hadronizer->Build(Fin <<
703 } <<
704 if ( (LeftHadron == NULL) || (RightHadron <<
705 } 660 }
706 LeftHadronMass = LeftHadron->GetPDGMa <<
707 RightHadronMass = RightHadron->GetPDGM <<
708 //... repeat procedure, if mass of clu <<
709 } while ( ( ResidualMass <= LeftHadronMass <<
710 && ++loopCounter < maxNumberOfLo <<
711 661
712 if ( loopCounter >= maxNumberOfLoops ) { << 662 if ( LeftHadron != nullptr ) {
713 return false; << 663 RightHadron = hadronizer->BuildLowSpin(string->GetRightParton(), quark);
>> 664
>> 665 if ( RightHadron != nullptr ) {
>> 666
>> 667 LeftHadronMass = LeftHadron->GetPDGMass();
>> 668 RightHadronMass = RightHadron->GetPDGMass();
>> 669 isOK = (ResidualMass > LeftHadronMass + RightHadronMass);
>> 670 }
>> 671 }
>> 672 ++loopCounter;
>> 673 if ( loopCounter >= maxNumberOfLoops ) {
>> 674 return false;
>> 675 }
>> 676 //... repeat procedure, if mass of cluster is too low to produce hadrons
>> 677 //... ClusterMassCut = 0.15*GeV model parameter
714 } 678 }
>> 679 while (isOK == false);
>> 680 /* Loop checking, 07.08.2015, A.Ribon */
715 681
716 //... compute hadron momenta and energies 682 //... compute hadron momenta and energies
717 G4LorentzVector LeftMom, RightMom; 683 G4LorentzVector LeftMom, RightMom;
718 G4ThreeVector Pos; 684 G4ThreeVector Pos;
719 Sample4Momentum(&LeftMom , LeftHadron->Get 685 Sample4Momentum(&LeftMom , LeftHadron->GetPDGMass() ,
720 &RightMom, RightHadron->Ge 686 &RightMom, RightHadron->GetPDGMass(), ResidualMass);
721 LeftMom.boost(ClusterVel); 687 LeftMom.boost(ClusterVel);
722 RightMom.boost(ClusterVel); 688 RightMom.boost(ClusterVel);
723 689
724 #ifdef debug_QGSMfragmentation 690 #ifdef debug_QGSMfragmentation
725 G4cout<<LeftHadron->GetParticleName()<<" " 691 G4cout<<LeftHadron->GetParticleName()<<" "<<RightHadron->GetParticleName()<<G4endl;
726 G4cout<<"Left Hadrom P M "<<LeftMom<<" "< 692 G4cout<<"Left Hadrom P M "<<LeftMom<<" "<<LeftMom.mag()<<G4endl;
727 G4cout<<"Right Hadrom P M "<<RightMom<<" " 693 G4cout<<"Right Hadrom P M "<<RightMom<<" "<<RightMom.mag()<<G4endl;
728 #endif 694 #endif
729 695
730 LeftVector->push_back(new G4KineticTrack(L 696 LeftVector->push_back(new G4KineticTrack(LeftHadron, 0, Pos, LeftMom));
731 RightVector->push_back(new G4KineticTrack( 697 RightVector->push_back(new G4KineticTrack(RightHadron, 0, Pos, RightMom));
732 698
733 return true; 699 return true;
734 } 700 }
735 701
736 //-------------------------------------------- 702 //----------------------------------------------------------------------------------------------------------
737 703
738 void G4QGSMFragmentation::Sample4Momentum(G4Lo 704 void G4QGSMFragmentation::Sample4Momentum(G4LorentzVector* Mom , G4double Mass ,
739 G4Lo 705 G4LorentzVector* AntiMom, G4double AntiMass, G4double InitialMass)
740 { 706 {
741 #ifdef debug_QGSMfragmentation <<
742 G4cout<<"Sample4Momentum Last------------- <<
743 G4cout<<" StrMass "<<InitialMass<<" Mass1 <<
744 G4cout<<" SumMass "<<Mass+AntiMass<<G4end <<
745 #endif <<
746 <<
747 G4double r_val = sqr(InitialMass*InitialMa 707 G4double r_val = sqr(InitialMass*InitialMass - Mass*Mass - AntiMass*AntiMass) - sqr(2.*Mass*AntiMass);
748 G4double Pabs = (r_val > 0.)? std::sqrt(r_ 708 G4double Pabs = (r_val > 0.)? std::sqrt(r_val)/(2.*InitialMass) : 0;
749 709
750 //... sample unit vector 710 //... sample unit vector
751 G4double pz = 1. - 2.*G4UniformRand(); 711 G4double pz = 1. - 2.*G4UniformRand();
752 G4double st = std::sqrt(1. - pz * pz)* 712 G4double st = std::sqrt(1. - pz * pz)*Pabs;
753 G4double phi = 2.*pi*G4UniformRand(); 713 G4double phi = 2.*pi*G4UniformRand();
754 G4double px = st*std::cos(phi); 714 G4double px = st*std::cos(phi);
755 G4double py = st*std::sin(phi); 715 G4double py = st*std::sin(phi);
756 pz *= Pabs; 716 pz *= Pabs;
757 717
758 Mom->setPx(px); Mom->setPy(py); Mom->setPz 718 Mom->setPx(px); Mom->setPy(py); Mom->setPz(pz);
759 Mom->setE(std::sqrt(Pabs*Pabs + Mass*Mass) 719 Mom->setE(std::sqrt(Pabs*Pabs + Mass*Mass));
760 720
761 AntiMom->setPx(-px); AntiMom->setPy(-py); 721 AntiMom->setPx(-px); AntiMom->setPy(-py); AntiMom->setPz(-pz);
762 AntiMom->setE (std::sqrt(Pabs*Pabs + AntiM 722 AntiMom->setE (std::sqrt(Pabs*Pabs + AntiMass*AntiMass));
763 } 723 }
764 724
765 //-------------------------------------------- 725 //----------------------------------------------------------------------------------------------------------
766 726
767 void G4QGSMFragmentation::SetFFq2q() // q-> q 727 void G4QGSMFragmentation::SetFFq2q() // q-> q' + Meson (q anti q')
768 { 728 {
769 for (G4int i=0; i < 5; i++) { 729 for (G4int i=0; i < 5; i++) {
770 FFq2q[i][0][0] = 2.0 ; FFq2q[i][0][1] = -a 730 FFq2q[i][0][0] = 2.0 ; FFq2q[i][0][1] = -arho + alft; // q->d + (q dbar) Pi0, Eta, Eta', Rho0, omega
771 FFq2q[i][1][0] = 2.0 ; FFq2q[i][1][1] = -a 731 FFq2q[i][1][0] = 2.0 ; FFq2q[i][1][1] = -arho + alft; // q->u + (q ubar) Pi-, Rho-
772 FFq2q[i][2][0] = 1.0 ; FFq2q[i][2][1] = -a 732 FFq2q[i][2][0] = 1.0 ; FFq2q[i][2][1] = -aphi + alft; // q->s + (q sbar) K0, K*0
773 FFq2q[i][3][0] = 1.0 ; FFq2q[i][3][1] = -a 733 FFq2q[i][3][0] = 1.0 ; FFq2q[i][3][1] = -aJPs + alft; // q->c + (q+cbar) D-, D*-
774 FFq2q[i][4][0] = 1.0 ; FFq2q[i][4][1] = -a 734 FFq2q[i][4][0] = 1.0 ; FFq2q[i][4][1] = -aUps + alft; // q->b + (q bbar) EtaB, Upsilon
775 } 735 }
776 } 736 }
777 737
778 //-------------------------------------------- 738 //----------------------------------------------------------------------------------------------------------
779 739
780 void G4QGSMFragmentation::SetFFq2qq() // q-> 740 void G4QGSMFragmentation::SetFFq2qq() // q-> anti (q1'q2') + Baryon (q + q1 + q2)
781 { 741 {
782 for (G4int i=0; i < 5; i++) { 742 for (G4int i=0; i < 5; i++) {
783 FFq2qq[i][ 0][0] = 0.0 ; FFq2qq[i][ 0][1] 743 FFq2qq[i][ 0][0] = 0.0 ; FFq2qq[i][ 0][1] = arho - 2.0*an + alft; // q->dd bar + (q dd)
784 FFq2qq[i][ 1][0] = 0.0 ; FFq2qq[i][ 1][1] 744 FFq2qq[i][ 1][0] = 0.0 ; FFq2qq[i][ 1][1] = arho - 2.0*an + alft; // q->ud bar + (q ud)
785 FFq2qq[i][ 2][0] = 0.0 ; FFq2qq[i][ 2][1] 745 FFq2qq[i][ 2][0] = 0.0 ; FFq2qq[i][ 2][1] = arho - 2.0*ala + alft; // q->sd bar + (q sd)
786 FFq2qq[i][ 3][0] = 0.0 ; FFq2qq[i][ 3][1] 746 FFq2qq[i][ 3][0] = 0.0 ; FFq2qq[i][ 3][1] = arho - 2.0*alaC + alft; // q->cd bar + (q cd)
787 FFq2qq[i][ 4][0] = 0.0 ; FFq2qq[i][ 4][1] 747 FFq2qq[i][ 4][0] = 0.0 ; FFq2qq[i][ 4][1] = arho - 2.0*alaB + alft; // q->bd bar + (q bd)
788 FFq2qq[i][ 5][0] = 0.0 ; FFq2qq[i][ 5][1] 748 FFq2qq[i][ 5][0] = 0.0 ; FFq2qq[i][ 5][1] = arho - 2.0*an + alft; // q->uu bar + (q uu)
789 FFq2qq[i][ 6][0] = 0.0 ; FFq2qq[i][ 6][1] 749 FFq2qq[i][ 6][0] = 0.0 ; FFq2qq[i][ 6][1] = arho - 2.0*ala + alft; // q->su bar + (q su)
790 FFq2qq[i][ 7][0] = 0.0 ; FFq2qq[i][ 7][1] 750 FFq2qq[i][ 7][0] = 0.0 ; FFq2qq[i][ 7][1] = arho - 2.0*alaC + alft; // q->cu bar + (q cu)
791 FFq2qq[i][ 8][0] = 0.0 ; FFq2qq[i][ 8][1] 751 FFq2qq[i][ 8][0] = 0.0 ; FFq2qq[i][ 8][1] = arho - 2.0*alaB + alft; // q->bu bar + (q bu)
792 FFq2qq[i][ 9][0] = 0.0 ; FFq2qq[i][ 9][1] 752 FFq2qq[i][ 9][0] = 0.0 ; FFq2qq[i][ 9][1] = arho - 2.0*aXi + alft; // q->ss bar + (q ss)
793 FFq2qq[i][10][0] = 0.0 ; FFq2qq[i][10][1] 753 FFq2qq[i][10][0] = 0.0 ; FFq2qq[i][10][1] = arho - 2.0*aXiC + alft; // q->cs bar + (q cs)
794 FFq2qq[i][11][0] = 0.0 ; FFq2qq[i][11][1] 754 FFq2qq[i][11][0] = 0.0 ; FFq2qq[i][11][1] = arho - 2.0*aXiB + alft; // q->bs bar + (q bc)
795 FFq2qq[i][12][0] = 0.0 ; FFq2qq[i][12][1] 755 FFq2qq[i][12][0] = 0.0 ; FFq2qq[i][12][1] = arho - 2.0*aXiCC + alft; // q->cc bar + (q cc)
796 FFq2qq[i][13][0] = 0.0 ; FFq2qq[i][13][1] 756 FFq2qq[i][13][0] = 0.0 ; FFq2qq[i][13][1] = arho - 2.0*aXiCB + alft; // q->bc bar + (q bc)
797 FFq2qq[i][14][0] = 0.0 ; FFq2qq[i][14][1] 757 FFq2qq[i][14][0] = 0.0 ; FFq2qq[i][14][1] = arho - 2.0*aXiBB + alft; // q->bb bar + (q bb)
798 } 758 }
799 } 759 }
800 760
801 //-------------------------------------------- 761 //----------------------------------------------------------------------------------------------------------
802 762
803 void G4QGSMFragmentation::SetFFqq2q() // q1q2 763 void G4QGSMFragmentation::SetFFqq2q() // q1q2-> anti(q') + Baryon (q1 + q2 + q')
804 { 764 {
805 for (G4int i=0; i < 15; i++) { 765 for (G4int i=0; i < 15; i++) {
806 FFqq2q[i][0][0] = 2.0*(arho - an); FFqq2q[ 766 FFqq2q[i][0][0] = 2.0*(arho - an); FFqq2q[i][0][1] = -arho + alft;
807 FFqq2q[i][1][0] = 2.0*(arho - an); FFqq2q[ 767 FFqq2q[i][1][0] = 2.0*(arho - an); FFqq2q[i][1][1] = -arho + alft;
808 FFqq2q[i][2][0] = 2.0*(arho - an); FFqq2q[ 768 FFqq2q[i][2][0] = 2.0*(arho - an); FFqq2q[i][2][1] = -aphi + alft;
809 FFqq2q[i][3][0] = 2.0*(arho - an); FFqq2q[ 769 FFqq2q[i][3][0] = 2.0*(arho - an); FFqq2q[i][3][1] = -aJPs + alft;
810 FFqq2q[i][4][0] = 2.0*(arho - an); FFqq2q[ 770 FFqq2q[i][4][0] = 2.0*(arho - an); FFqq2q[i][4][1] = -aUps + alft;
811 } 771 }
812 } 772 }
813 773
814 //-------------------------------------------- 774 //----------------------------------------------------------------------------------------------------------
815 775
816 void G4QGSMFragmentation::SetFFqq2qq() // q1( 776 void G4QGSMFragmentation::SetFFqq2qq() // q1(q2)-> q'(q2) + Meson(q1 anti q')
817 { 777 {
818 for (G4int i=0; i < 15; i++) { 778 for (G4int i=0; i < 15; i++) {
819 FFqq2qq[i][0][0] = 0. ; FFqq2qq[i][0][1] 779 FFqq2qq[i][0][0] = 0. ; FFqq2qq[i][0][1] = 2.0*arho - 2.0*an -arho + alft; // dd -> dd + Pi0 (d d bar)
820 FFqq2qq[i][1][0] = 0. ; FFqq2qq[i][1][1] 780 FFqq2qq[i][1][0] = 0. ; FFqq2qq[i][1][1] = 2.0*arho - 2.0*an -arho + alft; // dd -> ud + Pi- (d u bar)
821 FFqq2qq[i][2][0] = 0. ; FFqq2qq[i][2][1] 781 FFqq2qq[i][2][0] = 0. ; FFqq2qq[i][2][1] = 2.0*arho - 2.0*an -aphi + alft; // dd -> sd + K0 (d s bar)
822 FFqq2qq[i][3][0] = 0. ; FFqq2qq[i][3][1] 782 FFqq2qq[i][3][0] = 0. ; FFqq2qq[i][3][1] = 2.0*arho - 2.0*an -aJPs + alft; // dd -> cd + D- (d c bar)
823 FFqq2qq[i][4][0] = 0. ; FFqq2qq[i][4][1] 783 FFqq2qq[i][4][0] = 0. ; FFqq2qq[i][4][1] = 2.0*arho - 2.0*an -aUps + alft; // dd -> bd + B0 (d b bar)
824 } 784 }
825 } 785 }
826 786
827 787