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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35
36 #include "globals.hh"
37
38 /** \file G4INCLCrossSectionsTruncatedMultiPions.cc
39 * \brief Truncated multipion cross sections
40 *
41 * \date 10th December 2014
42 * \author Davide Mancusi
43 */
44
45 #include "G4INCLCrossSectionsTruncatedMultiPions.hh"
46 // #include <cassert>
47
48 namespace G4INCL {
49
50 CrossSectionsTruncatedMultiPions::CrossSectionsTruncatedMultiPions(const G4int nPi) :
51 nMaxPi(nPi)
52 {}
53
54 G4double CrossSectionsTruncatedMultiPions::elastic(Particle const * const p1, Particle const * const p2) {
55 // if(!p1->isPion() && !p2->isPion()) {
56 if((p1->isNucleon()||p1->isDelta()) && (p2->isNucleon()||p2->isDelta())){
57 return NNElastic(p1, p2);
58 }
59 // else if (p1->isNucleon() || p2->isNucleon()) {
60 else if ((p1->isNucleon() && p2->isPion()) || (p2->isNucleon() && p1->isPion())){
61 G4double pielas = piNTot(p1,p2) - piNIne(p1,p2) - CrossSectionsMultiPions::piNToDelta(p1,p2);
62 if (pielas < 0.)
63 pielas = 0.;
64 return pielas;
65 } else
66 return 0.0;
67 }
68
69 G4double CrossSectionsTruncatedMultiPions::piNToDelta(Particle const * const particle1, Particle const * const particle2) {
70 G4double sum = CrossSectionsMultiPions::piNToDelta(particle1, particle2);
71 if(nMaxPi<=1) {
72 for(G4int i=nMaxPi+1; i<=nMaxPiPiN; ++i)
73 sum += CrossSectionsMultiPions::piNToxPiN(i, particle1, particle2);
74 }
75 return sum;
76 }
77
78 G4double CrossSectionsTruncatedMultiPions::NNToxPiNN(const G4int xpi, Particle const * const particle1, Particle const * const particle2) {
79 if(xpi<nMaxPi)
80 return CrossSectionsMultiPions::NNToxPiNN(xpi, particle1, particle2);
81 else if(xpi==nMaxPi) {
82 G4double sum = 0.;
83 for(G4int i=xpi; i<=nMaxPiNN; ++i)
84 sum += CrossSectionsMultiPions::NNToxPiNN(i, particle1, particle2);
85 return sum;
86 } else
87 return 0.;
88 }
89
90 G4double CrossSectionsTruncatedMultiPions::piNToxPiN(const G4int xpi, Particle const * const particle1, Particle const * const particle2) {
91 if(xpi<nMaxPi)
92 return CrossSectionsMultiPions::piNToxPiN(xpi, particle1, particle2);
93 else if(xpi==nMaxPi) {
94 G4double sum = 0.;
95 for(G4int i=xpi; i<=nMaxPiPiN; ++i)
96 sum += CrossSectionsMultiPions::piNToxPiN(i, particle1, particle2);
97 return sum;
98 } else
99 return 0.;
100 }
101
102 } // namespace G4INCL
103
104