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Geant4/processes/hadronic/models/lepto_nuclear/src/G4NeutrinoNucleusModel.cc

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Diff markup

Differences between /processes/hadronic/models/lepto_nuclear/src/G4NeutrinoNucleusModel.cc (Version 11.3.0) and /processes/hadronic/models/lepto_nuclear/src/G4NeutrinoNucleusModel.cc (Version 9.6)


  1 //                                                  1 
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  6 // * the Geant4 Collaboration.  It is provided    
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 18 // * This  code  implementation is the result     
 19 // * technical work of the GEANT4 collaboratio    
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 24 // *******************************************    
 25 //                                                
 26 // $Id: G4NeutrinoNucleusModel.cc 91806 2015-0    
 27 //                                                
 28 // Geant4 Header : G4NeutrinoNucleusModel         
 29 //                                                
 30 // Author : V.Grichine 12.2.19                    
 31 //                                                
 32                                                   
 33 #include "G4NeutrinoNucleusModel.hh"              
 34                                                   
 35 #include "G4SystemOfUnits.hh"                     
 36 #include "G4ParticleTable.hh"                     
 37 #include "G4ParticleDefinition.hh"                
 38 #include "G4IonTable.hh"                          
 39 #include "Randomize.hh"                           
 40 #include "G4RandomDirection.hh"                   
 41                                                   
 42 //#include "G4Integrator.hh"                      
 43 #include "G4DataVector.hh"                        
 44 #include "G4PhysicsTable.hh"                      
 45                                                   
 46 #include "G4CascadeInterface.hh"                  
 47 // #include "G4BinaryCascade.hh"                  
 48 #include "G4TheoFSGenerator.hh"                   
 49 #include "G4GeneratorPrecompoundInterface.hh"     
 50 #include "G4ExcitationHandler.hh"                 
 51 #include "G4PreCompoundModel.hh"                  
 52 #include "G4LundStringFragmentation.hh"           
 53 #include "G4ExcitedStringDecay.hh"                
 54 #include "G4FTFModel.hh"                          
 55 // #include "G4BinaryCascade.hh"                  
 56 #include "G4HadFinalState.hh"                     
 57 #include "G4HadSecondary.hh"                      
 58 #include "G4HadronicInteractionRegistry.hh"       
 59 // #include "G4INCLXXInterface.hh"                
 60 #include "G4KineticTrack.hh"                      
 61 #include "G4DecayKineticTracks.hh"                
 62 #include "G4KineticTrackVector.hh"                
 63 #include "G4Fragment.hh"                          
 64 #include "G4ReactionProductVector.hh"             
 65                                                   
 66 // #include "G4QGSModel.hh"                       
 67 // #include "G4QGSMFragmentation.hh"              
 68 // #include "G4QGSParticipants.hh"                
 69                                                   
 70 #include "G4MuonMinus.hh"                         
 71 #include "G4MuonPlus.hh"                          
 72 #include "G4Nucleus.hh"                           
 73 #include "G4LorentzVector.hh"                     
 74 #include "G4PhysicsModelCatalog.hh"               
 75                                                   
 76 using namespace std;                              
 77 using namespace CLHEP;                            
 78                                                   
 79 const G4int G4NeutrinoNucleusModel::fResNumber    
 80                                                   
 81 const G4double G4NeutrinoNucleusModel::fResMas    
 82   {2190., 1920., 1700., 1600., 1440., 1232. };    
 83                                                   
 84 const G4int G4NeutrinoNucleusModel::fClustNumb    
 85                                                   
 86 const G4double G4NeutrinoNucleusModel::fMesMas    
 87 const G4int    G4NeutrinoNucleusModel::fMesPDG    
 88                                                   
 89 // const G4double G4NeutrinoNucleusModel::fBar    
 90 // const G4int    G4NeutrinoNucleusModel::fBar    
 91                                                   
 92 const G4double G4NeutrinoNucleusModel::fBarMas    
 93 const G4int    G4NeutrinoNucleusModel::fBarPDG    
 94                                                   
 95 const G4double  G4NeutrinoNucleusModel::fNuMuE    
 96 115.603, 133.424, 153.991, 177.729, 205.126, 2    
 97 745.387, 860.289, 992.903, 1145.96, 1322.61, 1    
 98 4806.1, 5546.97, 6402.04, 7388.91, 8527.92, 98    
 99 30988.8, 35765.7, 41279, 47642.2, 54986.3, 634    
100                                                   
101                                                   
102 G4double G4NeutrinoNucleusModel::fNuMuXarrayKR    
103 G4double G4NeutrinoNucleusModel::fNuMuXdistrKR    
104 G4double G4NeutrinoNucleusModel::fNuMuQarrayKR    
105 G4double G4NeutrinoNucleusModel::fNuMuQdistrKR    
106                                                   
107 ///////////////////////////////////////////       
108                                                   
109 G4NeutrinoNucleusModel::G4NeutrinoNucleusModel    
110   : G4HadronicInteraction(name), fSecID(-1)       
111 {                                                 
112   SetMinEnergy( 0.0*GeV );                        
113   SetMaxEnergy( 100.*TeV );                       
114   SetMinEnergy(1.e-6*eV);                         
115                                                   
116   fNbin = 50;                                     
117   fEindex = fXindex = fQindex = 0;                
118   fOnePionIndex = 58;                             
119   fIndex = 50;                                    
120   fCascade = fString = fProton = f2p2h = fBrea    
121                                                   
122   fNuEnergy  = fQ2  = fQtransfer = fXsample =     
123   fCosTheta = fCosThetaPi = 1.;                   
124   fEmuPi = fW2 = fW2pi = 0.;                      
125                                                   
126   fMu = 105.6583745*MeV;                          
127   fMpi = 139.57018*MeV;                           
128   fM1 = 939.5654133*MeV;  // for nu_mu -> mu-,    
129   fM2 = 938.2720813*MeV;                          
130                                                   
131   fEmu = fMu;                                     
132   fEx = fM1;                                      
133   fMr = 1232.*MeV;                                
134   fMt = fM2; // threshold for N*-diffraction      
135                                                   
136   fMinNuEnergy = GetMinNuMuEnergy();              
137                                                   
138   fLVh = G4LorentzVector(0.,0.,0.,0.);            
139   fLVl = G4LorentzVector(0.,0.,0.,0.);            
140   fLVt = G4LorentzVector(0.,0.,0.,0.);            
141   fLVcpi = G4LorentzVector(0.,0.,0.,0.);          
142                                                   
143   fQEratioA = 0.5; // mean value around 1 GeV     
144                                                   
145   theMuonMinus = G4MuonMinus::MuonMinus();        
146   theMuonPlus = G4MuonPlus::MuonPlus();           
147                                                   
148   // PDG2016: sin^2 theta Weinberg                
149                                                   
150   fSin2tW = 0.23129; // 0.2312;                   
151                                                   
152   fCutEnergy = 0.; // default value               
153                                                   
154                                                   
155   /*                                              
156   // G4VPreCompoundModel* ptr;                    
157   // reuse existing pre-compound model as in b    
158                                                   
159    fPrecoInterface = new  G4GeneratorPrecompou    
160                                                   
161     if( !fPreCompound )                           
162     {                                             
163       G4HadronicInteraction* p =                  
164         G4HadronicInteractionRegistry::Instanc    
165       G4VPreCompoundModel* fPreCompound = stat    
166                                                   
167       if(!fPreCompound)                           
168       {                                           
169   fPreCompound = new G4PreCompoundModel();        
170       }                                           
171       fPrecoInterface->SetDeExcitation(fPreCom    
172     }                                             
173     fDeExcitation = GetDeExcitation()->GetExci    
174   */                                              
175                                                   
176   fDeExcitation   = new G4ExcitationHandler();    
177   fPreCompound    = new G4PreCompoundModel(fDe    
178   fPrecoInterface = new  G4GeneratorPrecompoun    
179   fPrecoInterface->SetDeExcitation(fPreCompoun    
180                                                   
181   fPDGencoding = 0; // unphysical as default      
182   fRecoil = nullptr;                              
183                                                   
184   // Creator model ID                             
185   fSecID = G4PhysicsModelCatalog::GetModelID(     
186 }                                                 
187                                                   
188                                                   
189 G4NeutrinoNucleusModel::~G4NeutrinoNucleusMode    
190 {                                                 
191  if(fPrecoInterface) delete fPrecoInterface;      
192 }                                                 
193                                                   
194                                                   
195 void G4NeutrinoNucleusModel::ModelDescription(    
196 {                                                 
197                                                   
198     outFile << "G4NeutrinoNucleusModel is a ne    
199             << "model which uses the standard     
200             << "transfer parameterization.  Th    
201                                                   
202 }                                                 
203                                                   
204 //////////////////////////////////////////////    
205                                                   
206 G4bool G4NeutrinoNucleusModel::IsApplicable(co    
207                     G4Nucleus & )                 
208 {                                                 
209   G4bool result  = false;                         
210   G4String pName = aPart.GetDefinition()->GetP    
211   G4double energy = aPart.GetTotalEnergy();       
212                                                   
213   if(  pName == "nu_mu" // || pName == "anti_n    
214         &&                                        
215         energy > fMinNuEnergy                     
216   {                                               
217     result = true;                                
218   }                                               
219                                                   
220   return result;                                  
221 }                                                 
222                                                   
223 //////////////////////////////////////            
224                                                   
225 G4double G4NeutrinoNucleusModel::SampleXkr(G4d    
226 {                                                 
227   G4int i(0), nBin(50);                           
228   G4double xx(0.), prob = G4UniformRand();        
229                                                   
230   for( i = 0; i < nBin; ++i )                     
231   {                                               
232     if( energy <= fNuMuEnergyLogVector[i] ) br    
233   }                                               
234   if( i <= 0)          // E-edge                  
235   {                                               
236     fEindex = 0;                                  
237     xx = GetXkr( 0, prob);                        
238   }                                               
239   else if ( i >= nBin)                            
240   {                                               
241     fEindex = nBin-1;                             
242     xx = GetXkr( nBin-1, prob);                   
243   }                                               
244   else                                            
245   {                                               
246     fEindex = i;                                  
247     G4double x1 = GetXkr(i-1,prob);               
248     G4double x2 = GetXkr(i,prob);                 
249                                                   
250     G4double e1 = G4Log(fNuMuEnergyLogVector[i    
251     G4double e2 = G4Log(fNuMuEnergyLogVector[i    
252     G4double e  = G4Log(energy);                  
253                                                   
254     if( e2 <= e1) xx = x1 + G4UniformRand()*(x    
255     else          xx = x1 + (e-e1)*(x2-x1)/(e2    
256   }                                               
257   return xx;                                      
258 }                                                 
259                                                   
260 //////////////////////////////////////////////    
261 //                                                
262 // sample X according to prob (xmin,1) at a gi    
263                                                   
264 G4double G4NeutrinoNucleusModel::GetXkr(G4int     
265 {                                                 
266   G4int i(0), nBin=50;                            
267   G4double xx(0.);                                
268                                                   
269   for( i = 0; i < nBin; ++i )                     
270   {                                               
271     if( prob <= fNuMuXdistrKR[iEnergy][i] )       
272       break;                                      
273   }                                               
274   if(i <= 0 )  // X-edge                          
275   {                                               
276     fXindex = 0;                                  
277     xx = fNuMuXarrayKR[iEnergy][0];               
278   }                                               
279   if ( i >= nBin )                                
280   {                                               
281     fXindex = nBin;                               
282     xx = fNuMuXarrayKR[iEnergy][nBin];            
283   }                                               
284   else                                            
285   {                                               
286     fXindex = i;                                  
287     G4double x1 = fNuMuXarrayKR[iEnergy][i];      
288     G4double x2 = fNuMuXarrayKR[iEnergy][i+1];    
289                                                   
290     G4double p1 = 0.;                             
291                                                   
292     if( i > 0 ) p1 = fNuMuXdistrKR[iEnergy][i-    
293                                                   
294     G4double p2 = fNuMuXdistrKR[iEnergy][i];      
295                                                   
296     if( p2 <= p1 ) xx = x1 + G4UniformRand()*(    
297     else           xx = x1 + (prob-p1)*(x2-x1)    
298   }                                               
299   return xx;                                      
300 }                                                 
301                                                   
302 //////////////////////////////////////            
303 //                                                
304 // Sample fQtransfer at a given Enu and fX        
305                                                   
306 G4double G4NeutrinoNucleusModel::SampleQkr( G4    
307 {                                                 
308   G4int nBin(50), iE=fEindex, jX=fXindex;         
309   G4double qq(0.), qq1(0.), qq2(0.);              
310   G4double prob = G4UniformRand();                
311                                                   
312   // first E                                      
313                                                   
314   if( iE <= 0 )                                   
315   {                                               
316     qq1 = GetQkr( 0, jX, prob);                   
317   }                                               
318   else if ( iE >= nBin-1)                         
319   {                                               
320     qq1 = GetQkr( nBin-1, jX, prob);              
321   }                                               
322   else                                            
323   {                                               
324     G4double q1 = GetQkr(iE-1,jX, prob);          
325     G4double q2 = GetQkr(iE,jX, prob);            
326                                                   
327     G4double e1 = G4Log(fNuMuEnergyLogVector[i    
328     G4double e2 = G4Log(fNuMuEnergyLogVector[i    
329     G4double e  = G4Log(energy);                  
330                                                   
331     if( e2 <= e1) qq1 = q1 + G4UniformRand()*(    
332     else          qq1 = q1 + (e-e1)*(q2-q1)/(e    
333   }                                               
334                                                   
335   // then X                                       
336                                                   
337   if( jX <= 0 )                                   
338   {                                               
339     qq2 = GetQkr( iE, 0, prob);                   
340   }                                               
341   else if ( jX >= nBin)                           
342   {                                               
343     qq2 = GetQkr( iE, nBin, prob);                
344   }                                               
345   else                                            
346   {                                               
347     G4double q1 = GetQkr(iE,jX-1, prob);          
348     G4double q2 = GetQkr(iE,jX, prob);            
349                                                   
350     G4double e1 = G4Log(fNuMuXarrayKR[iE][jX-1    
351     G4double e2 = G4Log(fNuMuXarrayKR[iE][jX])    
352     G4double e  = G4Log(xx);                      
353                                                   
354     if( e2 <= e1) qq2 = q1 + G4UniformRand()*(    
355     else          qq2 = q1 + (e-e1)*(q2-q1)/(e    
356   }                                               
357   qq = 0.5*(qq1+qq2);                             
358                                                   
359   return qq;                                      
360 }                                                 
361                                                   
362 //////////////////////////////////////////////    
363 //                                                
364 // sample Q according to prob (qmin,qmax) at a    
365                                                   
366 G4double G4NeutrinoNucleusModel::GetQkr( G4int    
367 {                                                 
368   G4int i(0), nBin=50;                            
369   G4double qq(0.);                                
370                                                   
371   for( i = 0; i < nBin; ++i )                     
372   {                                               
373     if( prob <= fNuMuQdistrKR[iE][jX][i] )        
374       break;                                      
375   }                                               
376   if(i <= 0 )  // Q-edge                          
377   {                                               
378     fQindex = 0;                                  
379     qq = fNuMuQarrayKR[iE][jX][0];                
380   }                                               
381   if ( i >= nBin )                                
382   {                                               
383     fQindex = nBin;                               
384     qq = fNuMuQarrayKR[iE][jX][nBin];             
385   }                                               
386   else                                            
387   {                                               
388     fQindex = i;                                  
389     G4double q1 = fNuMuQarrayKR[iE][jX][i];       
390     G4double q2 = fNuMuQarrayKR[iE][jX][i+1];     
391                                                   
392     G4double p1 = 0.;                             
393                                                   
394     if( i > 0 ) p1 = fNuMuQdistrKR[iE][jX][i-1    
395                                                   
396     G4double p2 = fNuMuQdistrKR[iE][jX][i];       
397                                                   
398     if( p2 <= p1 ) qq = q1 + G4UniformRand()*(    
399     else           qq = q1 + (prob-p1)*(q2-q1)    
400   }                                               
401   return qq;                                      
402 }                                                 
403                                                   
404                                                   
405 //////////////////////////////////////////////    
406 //                                                
407 // Final meson to theParticleChange               
408                                                   
409 void G4NeutrinoNucleusModel::FinalMeson( G4Lor    
410 {                                                 
411   G4int pdg = pdgM;                               
412   // if      ( qM ==  0 ) pdg = pdgM - 100;       
413   // else if ( qM == -1 ) pdg = -pdgM;            
414                                                   
415   if( pdg == 211 || pdg == -211 || pdg == 111)    
416   {                                               
417     G4ParticleDefinition* pd2 = G4ParticleTabl    
418     G4DynamicParticle*    dp2 = new G4DynamicP    
419     theParticleChange.AddSecondary( dp2, fSecI    
420   }                                               
421   else // meson resonances                        
422   {                                               
423     G4ParticleDefinition* rePart = G4ParticleT    
424       FindParticle(pdg);                          
425     G4KineticTrack ddkt( rePart, 0., G4ThreeVe    
426     G4KineticTrackVector* ddktv = ddkt.Decay()    
427                                                   
428     G4DecayKineticTracks decay( ddktv );          
429                                                   
430     for( unsigned int i = 0; i < ddktv->size()    
431     {                                             
432       G4DynamicParticle * aNew =                  
433       new G4DynamicParticle( ddktv->operator[]    
434                              ddktv->operator[]    
435                                                   
436       // G4cout<<"       "<<i<<", "<<aNew->Get    
437                                                   
438       theParticleChange.AddSecondary( aNew, fS    
439       delete ddktv->operator[](i);                
440     }                                             
441     delete ddktv;                                 
442   }                                               
443 }                                                 
444                                                   
445 //////////////////////////////////////////////    
446 //                                                
447 // Final barion to theParticleChange, and reco    
448                                                   
449 void G4NeutrinoNucleusModel::FinalBarion( G4Lo    
450 {                                                 
451   G4int A(0), Z(0), pdg = pdgB;                   
452   // G4bool FiNucleon(false);                     
453                                                   
454   // if      ( qB ==  1 ) pdg = pdgB - 10;        
455   // else if ( qB ==  0 ) pdg = pdgB - 110;       
456   // else if ( qB == -1 ) pdg = pdgB - 1110;      
457                                                   
458   if( pdg == 2212 || pdg == 2112)                 
459   {                                               
460     fMr = G4ParticleTable::GetParticleTable()-    
461     // FiNucleon = true;                          
462   }                                               
463   else fMr = lvB.m();                             
464                                                   
465   G4ThreeVector bst = fLVt.boostVector();         
466   lvB.boost(-bst); // in fLVt rest system         
467                                                   
468   G4double eX = lvB.e();                          
469   G4double det(0.), det2(0.), rM(0.), mX = lvB    
470   G4ThreeVector dX = (lvB.vect()).unit();         
471   G4double pX = sqrt(eX*eX-mX*mX);                
472                                                   
473   if( fRecoil )                                   
474   {                                               
475     Z  = fRecoil->GetZ_asInt();                   
476     A  = fRecoil->GetA_asInt();                   
477     rM = fRecoil->AtomicMass(A,Z); //->AtomicM    
478     rM = fLVt.m();                                
479   }                                               
480   else // A=0 nu+p                                
481   {                                               
482     A = 0;                                        
483     Z = 1;                                        
484     rM = electron_mass_c2;                        
485   }                                               
486   // G4cout<<A<<", ";                             
487                                                   
488   G4double sumE = eX + rM;                        
489   G4double B = sumE*sumE + rM*rM - fMr*fMr - p    
490   G4double a = 4.*(sumE*sumE - pX*pX);            
491   G4double b = -4.*B*pX;                          
492   G4double c = 4.*sumE*sumE*rM*rM - B*B;          
493   det2       = b*b-4.*a*c;                        
494   if( det2 <= 0. ) det = 0.;                      
495   else             det = sqrt(det2);              
496   G4double dP = 0.5*(-b - det )/a;                
497                                                   
498   fDp = dP;                                       
499                                                   
500   pX -= dP;                                       
501                                                   
502   if(pX < 0.) pX = 0.;                            
503                                                   
504   // if( A == 0 ) G4cout<<pX/MeV<<", ";           
505                                                   
506   eX = sqrt( pX*pX + fMr*fMr );                   
507   G4LorentzVector lvN( pX*dX, eX );               
508   lvN.boost(bst); // back to lab                  
509                                                   
510   if( pdg == 2212 || pdg == 2112) // nucleons     
511   {                                               
512     G4ParticleDefinition* pd2 = G4ParticleTabl    
513     G4DynamicParticle*    dp2 = new G4DynamicP    
514     theParticleChange.AddSecondary( dp2, fSecI    
515                                                   
516   }                                               
517   else // delta resonances                        
518   {                                               
519     G4ParticleDefinition* rePart = G4ParticleT    
520     G4KineticTrack ddkt( rePart, 0., G4ThreeVe    
521     G4KineticTrackVector* ddktv = ddkt.Decay()    
522                                                   
523     G4DecayKineticTracks decay( ddktv );          
524                                                   
525     for( unsigned int i = 0; i < ddktv->size()    
526     {                                             
527       G4DynamicParticle * aNew =                  
528       new G4DynamicParticle( ddktv->operator[]    
529                              ddktv->operator[]    
530                                                   
531       // G4cout<<"       "<<i<<", "<<aNew->Get    
532                                                   
533       theParticleChange.AddSecondary( aNew, fS    
534       delete ddktv->operator[](i);                
535     }                                             
536     delete ddktv;                                 
537   }                                               
538   // recoil nucleus                               
539                                                   
540   G4double eRecoil = sqrt( rM*rM + dP*dP );       
541   fTr = eRecoil - rM;                             
542   G4ThreeVector vRecoil(dP*dX);                   
543   // dP += G4UniformRand()*10.*MeV;               
544   G4LorentzVector rec4v(vRecoil, 0.);             
545   rec4v.boost(bst); // back to lab                
546   fLVt += rec4v;                                  
547   const G4LorentzVector lvTarg = fLVt; // (vRe    
548                                                   
549                                                   
550   if( fRecoil ) // proton*?                       
551   {                                               
552     G4double grM = G4NucleiProperties::GetNucl    
553     G4double exE = fLVt.m() - grM;                
554     if( exE < 5.*MeV ) exE = 5.*MeV + G4Unifor    
555                                                   
556     const G4LorentzVector in4v( G4ThreeVector(    
557     G4Fragment fragment( A, Z, in4v); // lvTar    
558     fragment.SetNumberOfHoles(1);                 
559     fragment.SetExcEnergyAndMomentum( exE, lvT    
560                                                   
561     RecoilDeexcitation(fragment);                 
562   }                                               
563   else // momentum?                               
564   {                                               
565     theParticleChange.SetLocalEnergyDeposit( f    
566   }                                               
567 }                                                 
568                                                   
569                                                   
570 //////////////////////////////////////////////    
571 //                                                
572 // Get final particles from excited recoil nuc    
573                                                   
574 void G4NeutrinoNucleusModel::RecoilDeexcitatio    
575 {                                                 
576   G4ReactionProductVector* products = fPreComp    
577                                                   
578   if( products != nullptr )                       
579   {                                               
580     for( auto & prod : *products ) // prod is     
581     {                                             
582       theParticleChange.AddSecondary(new G4Dyn    
583                                                   
584                                                   
585       delete prod;                                
586     }                                             
587     delete products;                              
588   }                                               
589 }                                                 
590                                                   
591 ///////////////////////////////////////////       
592 //                                                
593 // Fragmentation of lvX directly to pion and r    
594                                                   
595 void G4NeutrinoNucleusModel::CoherentPion( G4L    
596 {                                                 
597   G4int A(0), Z(0), pdg = pdgP;                   
598   fLVcpi = G4LorentzVector(0.,0.,0.,0.);          
599                                                   
600   G4double  rM(0.), mN(938.), det(0.), det2(0.    
601   G4double mI(0.);                                
602   mN = G4ParticleTable::GetParticleTable()->Fi    
603                                                   
604   // mN = 1.*139.57 + G4UniformRand()*(938. -     
605                                                   
606   G4ThreeVector vN = lvP.boostVector(), bst(0.    
607   //  G4double gN = lvP.e()/lvP.m();              
608   // G4LorentzVector  lvNu(vN*gN*mN, mN*gN);      
609   G4LorentzVector  lvNu(0.,0.,0., mN);  // lvN    
610   lvP.boost(-vN);   // 9-3-20                     
611   lvP = lvP - lvNu; // 9-3-20  already 1pi        
612   lvP.boost(vN);    // 9-3-20                     
613   lvNu.boost(vN);    // 9-3-20                    
614                                                   
615   // G4cout<<vN-lvP.boostVector()<<", ";          
616                                                   
617   Z  = targetNucleus.GetZ_asInt();                
618   A  = targetNucleus.GetA_asInt();                
619   rM = targetNucleus.AtomicMass(A,Z); //->Atom    
620                                                   
621   // G4cout<<rM<<", ";                            
622   // G4cout<<A<<", ";                             
623                                                   
624   if( A == 1 )                                    
625   {                                               
626     bst = vN; // lvNu.boostVector(); // 9-3-20    
627     // mI = 0.; // 9-3-20                         
628     rM = mN;                                      
629   }                                               
630   else                                            
631   {                                               
632     G4Nucleus targ(A-1,Z);                        
633     mI = targ.AtomicMass(A-1,Z);                  
634     G4LorentzVector lvTar(0.,0.,0.,mI);           
635     lvNu = lvNu + lvTar;                          
636     bst = lvNu.boostVector();                     
637     // bst = fLVt.boostVector();  // to recoil    
638     // G4cout<<fLVt<<"     "<<bst<<G4endl;        
639   }                                               
640   lvP.boost(-bst); // 9-3-20                      
641   fMr = G4ParticleTable::GetParticleTable()->F    
642   G4double eX = lvP.e();                          
643   G4double mX = lvP.m();                          
644   // G4cout<<mX-fMr<<", ";                        
645   G4ThreeVector dX = (lvP.vect()).unit();         
646   // G4cout<<dX<<", ";                            
647   G4double pX = sqrt(eX*eX-mX*mX);                
648   // G4cout<<pX<<", ";                            
649   G4double sumE = eX + rM;                        
650   G4double B = sumE*sumE + rM*rM - fMr*fMr - p    
651   G4double a = 4.*(sumE*sumE - pX*pX);            
652   G4double b = -4.*B*pX;                          
653   G4double c = 4.*sumE*sumE*rM*rM - B*B;          
654   det2 = b*b-4.*a*c;                              
655   if(det2 > 0.) det = sqrt(det2);                 
656   G4double dP = 0.5*(-b - det )/a;                
657                                                   
658   // dP = FinalMomentum( mI, rM, fMr, lvP);       
659   dP = FinalMomentum( rM, rM, fMr, lvP); // 9-    
660                                                   
661   // G4cout<<dP<<", ";                            
662   pX -= dP;                                       
663   if( pX < 0. ) pX = 0.;                          
664                                                   
665   eX = sqrt( dP*dP + fMr*fMr );                   
666   G4LorentzVector lvN( dP*dX, eX );               
667                                                   
668   if( A >= 1 ) lvN.boost(bst); // 9-3-20 back     
669                                                   
670   fLVcpi = lvN;                                   
671                                                   
672   G4ParticleDefinition* pd2 = G4ParticleTable:    
673   G4DynamicParticle*    dp2 = new G4DynamicPar    
674   theParticleChange.AddSecondary( dp2, fSecID     
675                                                   
676   // recoil nucleus                               
677                                                   
678   G4double eRecoil = sqrt( rM*rM + pX*pX );       
679   G4ThreeVector vRecoil(pX*dX);                   
680   G4LorentzVector lvTarg1( vRecoil, eRecoil);     
681   lvTarg1.boost(bst);                             
682                                                   
683   const G4LorentzVector lvTarg = lvTarg1;         
684                                                   
685   if( A > 1 ) // recoil target nucleus*           
686   {                                               
687     G4double grM = G4NucleiProperties::GetNucl    
688     G4double exE = fLVt.m() - grM;                
689                                                   
690     if( exE < 5.*MeV ) exE = 5.*MeV + G4Unifor    
691                                                   
692     const G4LorentzVector in4v( G4ThreeVector(    
693     G4Fragment fragment( A, Z, in4v); // lvTar    
694     fragment.SetNumberOfHoles(1);                 
695     fragment.SetExcEnergyAndMomentum( exE, lvT    
696                                                   
697     RecoilDeexcitation(fragment);                 
698   }                                               
699   else // recoil target proton                    
700   {                                               
701     G4double eTkin = eRecoil - rM;                
702     G4double eTh   = 0.01*MeV; // 10.*MeV;        
703                                                   
704     if( eTkin > eTh )                             
705     {                                             
706       G4DynamicParticle * aSec = new G4Dynamic    
707       theParticleChange.AddSecondary(aSec, fSe    
708     }                                             
709     else theParticleChange.SetLocalEnergyDepos    
710   }                                               
711   return;                                         
712 }                                                 
713                                                   
714                                                   
715 //////////////////////////////////////////////    
716 //                                                
717 // Excited barion decay to meson and barion,      
718 // mass distributions and charge exchange are     
719                                                   
720 void G4NeutrinoNucleusModel::ClusterDecay( G4L    
721 {                                                 
722   G4bool   finB = false;                          
723   G4int    pdgB(0), i(0), qM(0), qB(0); //   p    
724   G4double mM(0.), mB(0.), eM(0.), eB(0.), pM(    
725   G4double mm1(0.), mm22(0.), M1(0.), M2(0.),     
726                                                   
727   mX = lvX.m();                                   
728                                                   
729   G4double mN  = G4ParticleTable::GetParticleT    
730   G4double mPi = G4ParticleTable::GetParticleT    
731                                                   
732   //  G4double deltaM =  1.*MeV; // 30.*MeV; /    
733   G4double deltaMr[4] =  { 0.*MeV, 0.*MeV, 100    
734                                                   
735   G4ThreeVector   dir(0.,0.,0.);                  
736   G4ThreeVector   bst(0.,0.,0.);                  
737   G4LorentzVector lvM(0.,0.,0.,0.);               
738   G4LorentzVector lvB(0.,0.,0.,0.);               
739                                                   
740   for( i = 0; i < fClustNumber; ++i) // check     
741   {                                               
742     if( mX >= fBarMass[i] )                       
743     {                                             
744         pdgB = fBarPDG[i];                        
745         // mB = G4ParticleTable::GetParticleTa    
746         break;                                    
747     }                                             
748   }                                               
749   if( i == fClustNumber || i == fClustNumber-1    
750   {                                               
751     if     ( qX == 2 || qX ==  0) { pdgB = 221    
752                                                   
753     else if( qX == 1 || qX == -1) { pdgB = 211    
754                                                   
755     return FinalBarion( lvX, qB, pdgB);           
756   }                                               
757   else if( mX < fBarMass[i] + deltaMr[i]  || m    
758   {                                               
759     finB = true; // final barion -> out           
760                                                   
761     if     ( qX == 1  && pdgB != 2212)  pdgB =    
762     else if( qX == 0  && pdgB != 2212)  pdgB =    
763     else if( qX == 0  && pdgB == 2212)  pdgB =    
764                                                   
765     if( finB ) return FinalBarion( lvX, qX, pd    
766   }                                               
767   // no barion resonance, try 1->2 decay in CO    
768                                                   
769   // try meson mass                               
770                                                   
771   mm1 = mPi + 1.*MeV;     // pi+                  
772   mm22 = mX - mN; // mX-n                         
773                                                   
774   if( mm22 <= mm1 ) // out with p or n            
775   {                                               
776     if( qX == 2 || qX == 0)       { pdgB = 221    
777     else if( qX == 1 || qX == -1) { pdgB = 211    
778                                                   
779     return FinalBarion(lvX, qB, pdgB);            
780   }                                               
781   else // try decay -> meson(cluster) + barion    
782   {                                               
783     // G4double sigmaM = 50.*MeV; // 100.*MeV;    
784     G4double rand   = G4UniformRand();            
785                                                   
786     // mM = mm1*mm22/( mm1 + rand*(mm22 - mm1)    
787     // mM = mm1*mm22/sqrt( mm1*mm1 + rand*(mm2    
788     // mM = -sigmaM*log( (1.- rand)*exp(-mm22/    
789     mM = mm1 + rand*(mm22-mm1);                   
790                                                   
791                                                   
792     for( i = 0; i < fClustNumber; ++i)            
793     {                                             
794       if( mM >= fMesMass[i] )                     
795       {                                           
796         // pdgM = fMesPDG[i];                     
797         // mM = G4ParticleTable::GetParticleTa    
798         break;                                    
799       }                                           
800     }                                             
801     M1 = G4ParticleTable::GetParticleTable()->    
802     M2 = mX - mM;                                 
803                                                   
804     if( M2 <= M1 ) //                             
805     {                                             
806       if     ( qX == 2 || qX ==  0) { pdgB = 2    
807       else if( qX == 1 || qX == -1) { pdgB = 2    
808                                                   
809       return FinalBarion(lvX, qB, pdgB);          
810     }                                             
811     mB = M1 + G4UniformRand()*(M2-M1);            
812     // mB = -sigmaM*log( (1.- rand)*exp(-M2/si    
813                                                   
814     bst = lvX.boostVector();                      
815                                                   
816     // dir = G4RandomDirection(); // ???          
817     // dir = G4ThreeVector(0.,0.,1.);             
818     dir = bst.orthogonal().unit(); // ??          
819     // G4double cost =  exp(-G4UniformRand());    
820     // G4double sint = sqrt((1.-cost)*(1.+cost    
821     // G4double phi = twopi*G4UniformRand();      
822     // dir = G4ThreeVector(sint*cos(phi), sint    
823                                                   
824     eM  = 0.5*(mX*mX + mM*mM - mB*mB)/mX;         
825     pM  = sqrt(eM*eM - mM*mM);                    
826     lvM = G4LorentzVector( pM*dir, eM);           
827     lvM.boost(bst);                               
828                                                   
829     eB  = 0.5*(mX*mX + mB*mB - mM*mM)/mX;         
830     pB  = sqrt(eB*eB - mB*mB);                    
831     lvB = G4LorentzVector(-pB*dir, eB);           
832     lvB.boost(bst);                               
833                                                   
834     // G4cout<<mM<<"/"<<mB<<", ";                 
835                                                   
836     // charge exchange                            
837                                                   
838     if     ( qX ==  2 ) { qM =  1; qB = 1;}       
839     else if( qX ==  1 ) { qM =  0; qB = 1;}       
840     else if( qX ==  0 ) { qM =  0; qB = 0;}       
841     else if( qX == -1 ) { qM = -1; qB = 0;}       
842                                                   
843     // if     ( qM ==  0 ) pdgM =  pdgM - 100;    
844     // else if( qM == -1 ) pdgM = -pdgM;          
845                                                   
846     MesonDecay( lvM, qM); // pdgM ); //           
847                                                   
848     // else                                       
849     ClusterDecay( lvB, qB ); // continue          
850   }                                               
851 }                                                 
852                                                   
853                                                   
854 //////////////////////////////////////////////    
855 //                                                
856 // Excited barion decay to meson and barion,      
857 // mass distributions and charge exchange are     
858                                                   
859 void G4NeutrinoNucleusModel::MesonDecay( G4Lor    
860 {                                                 
861   G4bool   finB = false;                          
862   G4int    pdgM(0), pdgB(0), i(0), qM(0), qB(0    
863   G4double mM(0.), mB(0.), eM(0.), eB(0.), pM(    
864   G4double mm1(0.), mm22(0.), M1(0.), M2(0.),     
865                                                   
866   mX = lvX.m();                                   
867   Tkin = lvX.e() - mX;                            
868                                                   
869   // if( mX < 1120*MeV && mX > 1020*MeV ) // p    
870   if( mX < 1080*MeV && mX > 990*MeV && Tkin <     
871   {                                               
872     return  FinalMeson( lvX, qB, 333);            
873   }                                               
874   G4double mPi = G4ParticleTable::GetParticleT    
875                                                   
876   G4double deltaMr[4] =  { 0.*MeV, 0.*MeV, 100    
877                                                   
878   G4ThreeVector   dir(0.,0.,0.);                  
879   G4ThreeVector   bst(0.,0.,0.);                  
880   G4LorentzVector lvM(0.,0.,0.,0.);               
881   G4LorentzVector lvB(0.,0.,0.,0.);               
882                                                   
883   for( i = 0; i < fClustNumber; ++i) // check     
884   {                                               
885     if( mX >= fMesMass[i] )                       
886     {                                             
887         pdgB = fMesPDG[i];                        
888         // mB = G4ParticleTable::GetParticleTa    
889         break;                                    
890     }                                             
891   }                                               
892   if( i == fClustNumber ) // || i == fClustNum    
893   {                                               
894     if     ( qX ==  1) { pdgB = 211;  qB =  1;    
895     else if( qX == 0 ) { pdgB = 111;  qB =  0;    
896     else if( qX == -1) { pdgB = -211; qB = -1;    
897                                                   
898     return FinalMeson( lvX, qB, pdgB);            
899   }                                               
900   else if( mX < fMesMass[i] + deltaMr[i] ) //     
901   {                                               
902     finB = true; // final barion -> out           
903     pdgB = fMesPDG[i];                            
904                                                   
905     // if     ( qX == 1  && pdgB != 2212)  pdg    
906                                                   
907     if( qX == 0 )        pdgB = pdgB - 100;       
908     else if( qX == -1 )  pdgB = -pdgB;            
909                                                   
910     if( finB ) return FinalMeson( lvX, qX, pdg    
911   }                                               
912   // no resonance, try 1->2 decay in COM frame    
913                                                   
914   // try meson                                    
915                                                   
916   mm1 = mPi + 1.*MeV;     // pi+                  
917   mm22 = mX - mPi - 1.*MeV; // mX-n               
918                                                   
919   if( mm22 <= mm1 ) // out                        
920   {                                               
921     if     ( qX ==  1) { pdgB = 211; qB = 1;}     
922     else if( qX == 0 ) { pdgB = 111; qB = 0;}     
923     else if( qX == -1) { pdgB = -211; qB = -1;    
924                                                   
925     return FinalMeson(lvX, qB, pdgB);             
926   }                                               
927   else // try decay -> pion + meson(cluster)      
928   {                                               
929     // G4double sigmaM = 50.*MeV; // 100.*MeV;    
930     G4double rand   = G4UniformRand();            
931                                                   
932     if     ( qX ==  1 ) { qM =  1; qB = 0;}       
933     else if( qX ==  0 ) { qM =  -1; qB = 1;} /    
934     else if( qX == -1 ) { qM = -1; qB = 0;}       
935     /*                                            
936     mM = mPi;                                     
937     if(qM == 0) mM = G4ParticleTable::GetParti    
938     pdgM = fMesPDG[fClustNumber-1];               
939     */                                            
940     // mm1*mm22/( mm1 + rand*(mm22 - mm1) );      
941     // mM = mm1*mm22/sqrt( mm1*mm1 + rand*(mm2    
942     // mM = -sigmaM*log( (1.- rand)*exp(-mm22/    
943     mM = mm1 + rand*(mm22-mm1);                   
944     // mM = mm1 + 0.9*(mm22-mm1);                 
945                                                   
946                                                   
947     for( i = 0; i < fClustNumber; ++i)            
948     {                                             
949       if( mM >= fMesMass[i] )                     
950       {                                           
951         pdgM = fMesPDG[i];                        
952         // mM = G4ParticleTable::GetParticleTa    
953         break;                                    
954       }                                           
955     }                                             
956     if( i == fClustNumber || i == fClustNumber    
957     {                                             
958       if     ( qX ==  1) { pdgB = 211; qB = 1;    
959       else if( qX == 0 ) { pdgB = 111; qB = 0;    
960       else if( qX == -1) { pdgB = -211; qB = -    
961                                                   
962       return FinalMeson( lvX, qB, pdgB);          
963     }                                             
964     else if( mX < fMesMass[i] + deltaMr[i] ) /    
965     {                                             
966       finB = true; // final barion -> out         
967       pdgB = fMesPDG[i];                          
968                                                   
969     // if     ( qX == 1  && pdgB != 2212)  pdg    
970                                                   
971       if( qX == 0 )        pdgB = pdgB - 100;     
972       else if( qX == -1 )  pdgB = -pdgB;          
973                                                   
974       if( finB ) return FinalMeson( lvX, qX, p    
975     }                                             
976                                                   
977     M1 = G4ParticleTable::GetParticleTable()->    
978     M2 = mX - mM;                                 
979                                                   
980     if( M2 <= M1 ) //                             
981     {                                             
982       if     ( qX ==  1) { pdgB = 211; qB = 1;    
983       else if( qX == 0 ) { pdgB = 111; qB = 0;    
984       else if( qX == -1) { pdgB = -211; qB = -    
985                                                   
986       return FinalMeson(lvX, qB, pdgB);           
987     }                                             
988     mB = M1 + G4UniformRand()*(M2-M1);            
989     // mB = -sigmaM*log( (1.- rand)*exp(-M2/si    
990     // mB = M1 + 0.9*(M2-M1);                     
991                                                   
992     bst = lvX.boostVector();                      
993                                                   
994     // dir = G4RandomDirection();                 
995     dir = bst.orthogonal().unit();                
996                                                   
997     eM  = 0.5*(mX*mX + mM*mM - mB*mB)/mX;         
998     pM  = sqrt(eM*eM - mM*mM);                    
999     lvM = G4LorentzVector( pM*dir, eM);           
1000     lvM.boost(bst);                              
1001                                                  
1002     eB  = 0.5*(mX*mX + mB*mB - mM*mM)/mX;        
1003     pB  = sqrt(eB*eB - mB*mB);                   
1004     lvB = G4LorentzVector(-pB*dir, eB);          
1005     lvB.boost(bst);                              
1006                                                  
1007     // G4cout<<mM<<"/"<<mB<<", ";                
1008                                                  
1009     // charge exchange                           
1010                                                  
1011     // if     ( qX ==  2 ) { qM =  1; qB = 1;    
1012                                                  
1013     if     ( qM ==  0 ) pdgM =  pdgM - 100;      
1014     else if( qM == -1 ) pdgM = -pdgM;            
1015                                                  
1016     MesonDecay( lvM, qM ); //                    
1017                                                  
1018     MesonDecay( lvB, qB ); // continue           
1019   }                                              
1020 }                                                
1021                                                  
1022 /////////////////////////////////////////////    
1023 //                                               
1024 // return final momentum x in the reaction lv    
1025                                                  
1026 G4double G4NeutrinoNucleusModel::FinalMomentu    
1027 {                                                
1028   G4double result(0.), delta(0.);                
1029   //  G4double mI2 = mI*mI;                      
1030   G4double mF2 = mF*mF;                          
1031   G4double mP2 = mP*mP;                          
1032   G4double eX = lvX.e();                         
1033   // G4double mX = lvX.m();                      
1034   G4double pX = lvX.vect().mag();                
1035   G4double pX2 = pX*pX;                          
1036   G4double sI = eX + mI;                         
1037   G4double sI2 = sI*sI;                          
1038   G4double B = sI2 - mF2 -pX2 + mP2;             
1039   G4double B2 = B*B;                             
1040   G4double a = 4.*(sI2-pX2);                     
1041   G4double b = -4.*B*pX;                         
1042   G4double c = 4.*sI2*mP2 - B2;                  
1043   G4double delta2 = b*b -4.*a*c;                 
1044                                                  
1045   if( delta2 >= 0. ) delta = sqrt(delta2);       
1046                                                  
1047   result = 0.5*(-b-delta)/a;                     
1048   // result = 0.5*(-b+delta)/a;                  
1049                                                  
1050   return result;                                 
1051 }                                                
1052                                                  
1053 /////////////////////////////////////////////    
1054 //                                               
1055 //                                               
1056                                                  
1057 G4double G4NeutrinoNucleusModel::FermiMomentu    
1058 {                                                
1059   G4int Z  = targetNucleus.GetZ_asInt();         
1060   G4int A  = targetNucleus.GetA_asInt();         
1061                                                  
1062   G4double kF(250.*MeV);                         
1063   G4double kp = 365.*MeV;                        
1064   G4double kn = 231.*MeV;                        
1065   G4double t1 = 0.479;                           
1066   G4double t2 = 0.526;                           
1067   G4double ZpA  = G4double(Z)/G4double(A);       
1068   G4double NpA = 1. - ZpA;                       
1069                                                  
1070   if      ( Z == 1  && A == 1   ) { kF = 0.;     
1071   else if ( Z == 1  && A == 2   ) { kF = 87.*    
1072   else if ( Z == 2  && A == 3   ) { kF = 134.    
1073   else if ( Z == 6  && A == 12  ) { kF = 221.    
1074   else if ( Z == 14 && A == 28  ) { kF = 239.    
1075   else if ( Z == 26 && A == 56  ) { kF = 257.    
1076   else if ( Z == 82 && A == 208 ) { kF = 265.    
1077   else                                           
1078   {                                              
1079     kF = kp*ZpA*( 1 - pow( G4double(A), -t1 )    
1080   }                                              
1081   return kF;                                     
1082 }                                                
1083                                                  
1084 /////////////////////////////////////////////    
1085 //                                               
1086 // sample nucleon momentum of Fermi motion fo    
1087                                                  
1088 G4double G4NeutrinoNucleusModel::NucleonMomen    
1089 {                                                
1090   G4int A     = targetNucleus.GetA_asInt();      
1091   G4double kF = FermiMomentum( targetNucleus)    
1092   G4double mom(0.), kCut = 0.5*GeV; // kCut =    
1093   //  G4double cof = 2./GeV;                     
1094   // G4double ksi = kF*kF*cof*cof/pi/pi;         
1095   G4double th  = 1.; // 1. - 6.*ksi; //          
1096                                                  
1097   if( G4UniformRand() < th || A < 3 )  // 1p1    
1098   {                                              
1099     mom = kF*pow( G4UniformRand(), 1./3.);       
1100   }                                              
1101   else // 2p2h                                   
1102   {                                              
1103     mom  = kF*kCut;                              
1104     mom /= kCut - G4UniformRand()*(kCut - kF)    
1105     f2p2h = true;                                
1106   }                                              
1107   return mom;                                    
1108 }                                                
1109                                                  
1110                                                  
1111 /////////////////////////////////////////////    
1112 //                                               
1113 // Excitation energy according Bodek             
1114                                                  
1115 G4double G4NeutrinoNucleusModel::GetEx( G4int    
1116 {                                                
1117   G4double eX(10.*MeV), a1(0.), a2(0.), e1(0.    
1118   G4int i(0);                                    
1119   const G4int maxBin = 12;                       
1120                                                  
1121   G4double refA[maxBin] = { 2., 6., 12., 16.,    
1122                                                  
1123   G4double pEx[maxBin] = { 0., 12.2, 10.1, 10    
1124                                                  
1125   G4double nEx[maxBin] = { 0., 12.2, 10., 10.    
1126                                                  
1127   G4DataVector dE(12,0.);                        
1128                                                  
1129   if(fP) for( i = 0; i < maxBin; ++i ) dE[i]     
1130   else                                 dE[i]     
1131                                                  
1132   for( i = 0; i < maxBin; ++i )                  
1133   {                                              
1134     if( aa <= refA[i] ) break;                   
1135   }                                              
1136   if( i >= maxBin ) eX = dE[maxBin-1];           
1137   else if( i <= 0 ) eX = dE[0];                  
1138   else                                           
1139   {                                              
1140     a1 = refA[i-1];                              
1141     a2 = refA[i];                                
1142     e1 = dE[i-1];                                
1143     e2 = dE[i];                                  
1144     if (a1 == a2 || e1 == e2 ) eX = dE[i];       
1145     else eX = e1 + (e2-e1)*(aa-a1)/(a2-a1);      
1146   }                                              
1147   return eX;                                     
1148 }                                                
1149                                                  
1150                                                  
1151                                                  
1152 /////////////////////////////////////////////    
1153 //                                               
1154 // Two G-function sampling for the nucleon mo    
1155                                                  
1156 G4double G4NeutrinoNucleusModel::GgSampleNM(G    
1157 {                                                
1158   f2p2h = false;                                 
1159   G4double /* distr(0.), tail(0.), */ shift(1    
1160   G4double kF = FermiMomentum( nucl);            
1161   G4double momMax = 2.*kF; //  1.*GeV; //  1.    
1162   G4double aa = 5.5;                             
1163   G4double ll = 6.0; //  6.5; //                 
1164                                                  
1165   G4int A = nucl.GetA_asInt();                   
1166                                                  
1167   if( A <= 12) th = 0.1;                         
1168   else                                           
1169   {                                              
1170     // th = 0.1/(1.+log(G4double(A)/12.));       
1171     th = 1.2/( G4double(A) + 1.35*log(G4doubl    
1172   }                                              
1173   shift = 0.99; // 0.95; //                      
1174   xx = mom/shift/kF;                             
1175                                                  
1176   G4double rr = G4UniformRand();                 
1177                                                  
1178   if( rr > th )                                  
1179   {                                              
1180     aa = 5.5;                                    
1181                                                  
1182     if( A <= 12 ) ll = 6.0;                      
1183     else                                         
1184     {                                            
1185       ll = 6.0 + 1.35*log(G4double(A)/12.);      
1186     }                                            
1187     xx = RandGamma::shoot(aa,ll);                
1188     shift = 0.99;                                
1189     mom = xx*shift*kF;                           
1190   }                                              
1191   else                                           
1192   {                                              
1193     f2p2h = true;                                
1194     aa = 6.5;                                    
1195     ll = 6.5;                                    
1196     xx = RandGamma::shoot(aa,ll);                
1197     shift = 2.5;                                 
1198     mom = xx*shift*kF;                           
1199   }                                              
1200   if( mom > momMax ) mom = G4UniformRand()*mo    
1201   if( mom > 2.*kF  ) f2p2h = true;               
1202                                                  
1203   // mom = 0.;                                   
1204                                                  
1205   return mom;                                    
1206 }                                                
1207                                                  
1208                                                  
1209 ///////////////////////////////////// experim    
1210 //                                               
1211 // Return index of nu/anu energy array corres    
1212                                                  
1213 G4int G4NeutrinoNucleusModel::GetEnergyIndex(    
1214 {                                                
1215   G4int i, eIndex = 0;                           
1216                                                  
1217   for( i = 0; i < fIndex; i++)                   
1218   {                                              
1219     if( energy <= fNuMuEnergy[i]*GeV )           
1220     {                                            
1221       eIndex = i;                                
1222       break;                                     
1223     }                                            
1224   }                                              
1225   if( i >= fIndex ) eIndex = fIndex;             
1226   // G4cout<<"eIndex = "<<eIndex<<G4endl;        
1227   return eIndex;                                 
1228 }                                                
1229                                                  
1230 /////////////////////////////////////////////    
1231 //                                               
1232 // nu_mu QE/Tot ratio for index-1, index line    
1233                                                  
1234 G4double G4NeutrinoNucleusModel::GetNuMuQeTot    
1235 {                                                
1236   G4double ratio(0.);                            
1237   // GetMinNuMuEnergy()                          
1238   if( index <= 0 || energy < fNuMuEnergy[0] )    
1239   else if (index >= fIndex) ratio = fNuMuQeTo    
1240   else                                           
1241   {                                              
1242     G4double x1 = fNuMuEnergy[index-1]*GeV;      
1243     G4double x2 = fNuMuEnergy[index]*GeV;        
1244     G4double y1 = fNuMuQeTotRat[index-1];        
1245     G4double y2 = fNuMuQeTotRat[index];          
1246                                                  
1247     if(x1 >= x2) return fNuMuQeTotRat[index];    
1248     else                                         
1249     {                                            
1250       G4double angle = (y2-y1)/(x2-x1);          
1251       ratio = y1 + (energy-x1)*angle;            
1252     }                                            
1253   }                                              
1254   return ratio;                                  
1255 }                                                
1256                                                  
1257 /////////////////////////////////////////////    
1258                                                  
1259 const G4double G4NeutrinoNucleusModel::fNuMuE    
1260 {                                                
1261   0.112103, 0.117359, 0.123119, 0.129443, 0.1    
1262   0.144084, 0.152576, 0.161991, 0.172458, 0.1    
1263   0.197171, 0.211801, 0.228261, 0.24684, 0.26    
1264   0.291816, 0.319125, 0.350417, 0.386422, 0.4    
1265   0.47634, 0.532692, 0.598756, 0.676612, 0.76    
1266   0.878812, 1.01062, 1.16963, 1.36271, 1.5987    
1267   1.88943, 2.25002, 2.70086, 3.26916, 3.99166    
1268   4.91843, 6.11836, 7.6872, 9.75942, 12.5259,    
1269   16.2605, 21.3615, 28.4141, 38.2903, 52.3062    
1270   72.4763, 101.93, 145.6, 211.39, 312.172        
1271 };                                               
1272                                                  
1273 /////////////////////////////////////////////    
1274                                                  
1275 const G4double G4NeutrinoNucleusModel::fNuMuQ    
1276 {                                                
1277   // 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,     
1278   // 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,     
1279   // 1., 1., 1., 0.982311,                       
1280   0.98, 0.98, 0.98, 0.98, 0.98, 0.98, 0.98, 0    
1281   0.98, 0.98, 0.98, 0.98, 0.98, 0.98, 0.98, 0    
1282   0.97, 0.96, 0.95, 0.93,                        
1283   0.917794, 0.850239, 0.780412, 0.709339, 0.6    
1284   0.500236, 0.435528, 0.375015, 0.319157, 0.2    
1285   0.148627, 0.119008, 0.0940699, 0.0733255, 0    
1286   0.0235026, 0.0170486, 0.0122149, 0.00857825    
1287 };                                               
1288                                                  
1289 /////////////////////////////////////////////    
1290 //                                               
1291 // Return index of one pion array correspondi    
1292                                                  
1293 G4int G4NeutrinoNucleusModel::GetOnePionIndex    
1294 {                                                
1295   G4int i, eIndex = 0;                           
1296                                                  
1297   for( i = 0; i < fOnePionIndex; i++)            
1298   {                                              
1299     if( energy <= fOnePionEnergy[i]*GeV )        
1300     {                                            
1301       eIndex = i;                                
1302       break;                                     
1303     }                                            
1304   }                                              
1305   if( i >= fOnePionIndex ) eIndex = fOnePionI    
1306   // G4cout<<"eIndex = "<<eIndex<<G4endl;        
1307   return eIndex;                                 
1308 }                                                
1309                                                  
1310 /////////////////////////////////////////////    
1311 //                                               
1312 // nu_mu 1pi/Tot ratio for index-1, index lin    
1313                                                  
1314 G4double G4NeutrinoNucleusModel::GetNuMuOnePi    
1315 {                                                
1316   G4double ratio(0.);                            
1317                                                  
1318   if(       index <= 0 || energy < fOnePionEn    
1319   else if ( index >= fOnePionIndex )      rat    
1320   else                                           
1321   {                                              
1322     G4double x1 = fOnePionEnergy[index-1]*GeV    
1323     G4double x2 = fOnePionEnergy[index]*GeV;     
1324     G4double y1 = fOnePionProb[index-1];         
1325     G4double y2 = fOnePionProb[index];           
1326                                                  
1327     if( x1 >= x2) return fOnePionProb[index];    
1328     else                                         
1329     {                                            
1330       G4double angle = (y2-y1)/(x2-x1);          
1331       ratio = y1 + (energy-x1)*angle;            
1332     }                                            
1333   }                                              
1334   return ratio;                                  
1335 }                                                
1336                                                  
1337 /////////////////////////////////////////////    
1338                                                  
1339 const G4double G4NeutrinoNucleusModel::fOnePi    
1340 {                                                
1341                                                  
1342   0.275314, 0.293652, 0.31729, 0.33409, 0.351    
1343   0.504391, 0.537803, 0.588487, 0.627532, 0.6    
1344   1.2982, 1.40393, 1.49854, 1.64168, 1.7524,     
1345   3.03005, 3.40733, 3.88128, 4.53725, 5.16786    
1346   11.5735, 13.1801, 15.2052, 17.5414, 19.7178    
1347   53.6065, 63.4668, 73.2147, 85.5593, 99.9854    
1348 };                                               
1349                                                  
1350                                                  
1351 /////////////////////////////////////////////    
1352                                                  
1353 const G4double G4NeutrinoNucleusModel::fOnePi    
1354 {                                                
1355   0.0019357, 0.0189361, 0.0378722, 0.0502758,    
1356   0.153787, 0.18308, 0.213996, 0.245358, 0.27    
1357   0.328092, 0.313557, 0.304965, 0.292169, 0.2    
1358   0.205492, 0.198781, 0.182216, 0.162251, 0.1    
1359   0.0755204, 0.0703121, 0.0607066, 0.0554278,    
1360   0.0244296, 0.0218526, 0.019121, 0.016477, 0    
1361 };                                               
1362                                                  
1363 //////////////////// QEratio(Z,A,Enu)            
1364                                                  
1365 G4double G4NeutrinoNucleusModel::CalculateQEr    
1366 {                                                
1367   energy /= GeV;                                 
1368   G4double qerata(0.5), rr(0.), x1(0.), x2(0.    
1369   G4int i(0), N(0);                              
1370                                                  
1371   if( A > Z ) N = A-Z;                           
1372                                                  
1373   for( i = 0; i < 50; i++)                       
1374   {                                              
1375     if( fQEnergy[i]  >= energy ) break;          
1376   }                                              
1377   if(i <= 0) return 1.;                          
1378   else if (i >= 49) return 0.;                   
1379   else                                           
1380   {                                              
1381     x1 = fQEnergy[i-1];                          
1382     x2 = fQEnergy[i];                            
1383                                                  
1384     if( nepdg == 12 ||  nepdg == 14 )            
1385     {                                            
1386       if( x1 >= x2) return fNeMuQEratio[i];      
1387                                                  
1388       y1 = fNeMuQEratio[i-1];                    
1389       y2 = fNeMuQEratio[i];                      
1390     }                                            
1391     else                                         
1392     {                                            
1393       if( x1 >= x2) return fANeMuQEratio[i];     
1394                                                  
1395       y1 = fANeMuQEratio[i-1];                   
1396       y2 = fANeMuQEratio[i];                     
1397     }                                            
1398     aa = (y2-y1)/(x2-x1);                        
1399     rr = y1 + (energy-x1)*aa;                    
1400                                                  
1401     if( nepdg == 12 ||  nepdg == 14 ) qerata     
1402     else                                         
1403   }                                              
1404   fQEratioA = qerata;                            
1405                                                  
1406   return qerata;                                 
1407 }                                                
1408                                                  
1409 const G4double G4NeutrinoNucleusModel::fQEner    
1410 {                                                
1411   0.12, 0.1416, 0.167088, 0.197164, 0.232653,    
1412   0.62806, 0.741111, 0.874511, 1.03192, 1.217    
1413   3.28716, 3.87885, 4.57705, 5.40092, 6.37308    
1414   17.2045, 20.3013, 23.9555, 28.2675, 33.3557    
1415   90.0454, 106.254, 125.379, 147.947, 174.578    
1416 };                                               
1417                                                  
1418 const G4double G4NeutrinoNucleusModel::fANeMu    
1419 {                                                
1420   1, 1, 1, 1, 1, 1, 1, 0.97506, 0.920938, 0.8    
1421   0.52538, 0.461466, 0.405329, 0.356154, 0.31    
1422   0.161991, 0.141339, 0.123078, 0.106952, 0.0    
1423   0.044193, 0.0378696, 0.0324138, 0.0276955,     
1424   0.0105536, 0.00896322, 0.00761004, 0.006458    
1425   0.00333961, 0.00283086, 0.00239927             
1426 };                                               
1427                                                  
1428 const G4double G4NeutrinoNucleusModel::fNeMuQ    
1429 {                                                
1430   1, 1, 1, 1, 1, 1, 1, 0.977592, 0.926073, 0.    
1431   0.490818, 0.428384, 0.371865, 0.321413, 0.2    
1432   0.109456, 0.093514, 0.0798548, 0.0681575, 0    
1433   0.0261061, 0.0222231, 0.0189152, 0.0160987,    
1434   0.00611714, 0.00520618, 0.00443105, 0.00377    
1435 };                                               
1436                                                  
1437 //                                               
1438 //                                               
1439 ///////////////////////////                      
1440