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25 // 25 //
26 // INCL++ intra-nuclear cascade model 26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France 27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium 28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France 29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France 31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France 32 // Davide Mancusi, CEA-Saclay, France
33 // 33 //
34 #define INCLXX_IN_GEANT4_MODE 1 34 #define INCLXX_IN_GEANT4_MODE 1
35 35
36 #include "globals.hh" 36 #include "globals.hh"
37 37
38 #include "G4INCLNNbarToNNbarpiChannel.hh" 38 #include "G4INCLNNbarToNNbarpiChannel.hh"
39 #include "G4INCLKinematicsUtils.hh" 39 #include "G4INCLKinematicsUtils.hh"
40 #include "G4INCLBinaryCollisionAvatar.hh" 40 #include "G4INCLBinaryCollisionAvatar.hh"
41 #include "G4INCLRandom.hh" 41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh" 42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh" 43 #include "G4INCLLogger.hh"
44 #include <algorithm> 44 #include <algorithm>
45 #include "G4INCLPhaseSpaceGenerator.hh" 45 #include "G4INCLPhaseSpaceGenerator.hh"
46 46
47 namespace G4INCL { 47 namespace G4INCL {
48 48
49 NNbarToNNbarpiChannel::NNbarToNNbarpiChannel 49 NNbarToNNbarpiChannel::NNbarToNNbarpiChannel(Particle *p1, Particle *p2)
50 : particle1(p1), particle2(p2) 50 : particle1(p1), particle2(p2)
51 {} 51 {}
52 52
53 NNbarToNNbarpiChannel::~NNbarToNNbarpiChanne 53 NNbarToNNbarpiChannel::~NNbarToNNbarpiChannel(){}
54 54
55 void NNbarToNNbarpiChannel::fillFinalState(F 55 void NNbarToNNbarpiChannel::fillFinalState(FinalState *fs) {
56 56
57 //brief ppbar 57 //brief ppbar
58 // p pbar -> p pbar pi0 (BFMM 185) 58 // p pbar -> p pbar pi0 (BFMM 185)
59 // p pbar -> p nbar pi- (BFMM 188) 59 // p pbar -> p nbar pi- (BFMM 188)
60 // p pbar -> n pbar pi+ (BFMM 199) 60 // p pbar -> n pbar pi+ (BFMM 199)
61 // p pbar -> n nbar pi0 (no data) 61 // p pbar -> n nbar pi0 (no data)
62 // 62 //
63 //brief npbar 63 //brief npbar
64 // n pbar -> p pbar pi- (BFMM 491) 64 // n pbar -> p pbar pi- (BFMM 491)
65 // n pbar -> p nbar pion (impossible) 65 // n pbar -> p nbar pion (impossible)
66 // n pbar -> n pbar pi0 (BFMM 495) 66 // n pbar -> n pbar pi0 (BFMM 495)
67 // n pbar -> n nbar pi- (same as BFMM 67 // n pbar -> n nbar pi- (same as BFMM 188)
68 // 68 //
69 //brief nnbar 69 //brief nnbar
70 // n nbar -> n nbar pi0 (same as BFMM 70 // n nbar -> n nbar pi0 (same as BFMM 185)
71 // n nbar -> p nbar pi- (same as BFMM 71 // n nbar -> p nbar pi- (same as BFMM 188)
72 // n nbar -> n pbar pi+ (same as BFMM 72 // n nbar -> n pbar pi+ (same as BFMM 199)
73 // n nbar -> p pbar pi0 (no data) 73 // n nbar -> p pbar pi0 (no data)
74 // 74 //
75 //brief pnbar 75 //brief pnbar
76 // p nbar -> p pbar pi+ (same as BFMM 76 // p nbar -> p pbar pi+ (same as BFMM 491)
77 // p nbar -> n pbar pion (impossible) 77 // p nbar -> n pbar pion (impossible)
78 // p nbar -> p nbar pi0 (same as BFMM 78 // p nbar -> p nbar pi0 (same as BFMM 495)
79 // p nbar -> n nbar pi+ (same as BFMM 79 // p nbar -> n nbar pi+ (same as BFMM 188)
80 80
81 Particle *nucleon; 81 Particle *nucleon;
82 Particle *antinucleon; 82 Particle *antinucleon;
83 83
84 if(particle1->isNucleon()){ 84 if(particle1->isNucleon()){
85 nucleon = particle1; 85 nucleon = particle1;
86 antinucleon = particle2; 86 antinucleon = particle2;
87 } 87 }
88 else{ 88 else{
89 nucleon = particle2; 89 nucleon = particle2;
90 antinucleon = particle1; 90 antinucleon = particle1;
91 } 91 }
92 92
93 const G4double plab = 0.001*KinematicsUtil 93 const G4double plab = 0.001*KinematicsUtils::momentumInLab(particle1, particle2);
94 const G4double sqrtS = KinematicsUtils::to 94 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, antinucleon);
95 const G4double rdm = Random::shoot(); 95 const G4double rdm = Random::shoot();
96 96
97 const std::vector<G4double> BFMM185 = 97 const std::vector<G4double> BFMM185 = {-0.734, 0.841, 0.905, 3.415, -2.316, 0.775};
98 //{22.781, -22.602, -0.752, -11.036, 1.548 98 //{22.781, -22.602, -0.752, -11.036, 1.548, 0.775};
99 //const G4double Eth_PPbar_PPbar_pi0 = 99 //const G4double Eth_PPbar_PPbar_pi0 = 0.775;
100 const std::vector<G4double> BFMM188 = 100 const std::vector<G4double> BFMM188 = { -0.442, 0.501, 0.002, 3.434, -1.201, 0.798};
101 //const G4double Eth_PPbar_PNbar_pim = 101 //const G4double Eth_PPbar_PNbar_pim = 0.798;
102 const std::vector<G4double> BFMM199 = 102 const std::vector<G4double> BFMM199 = {-2.025, 2.055, -2.355, 6.064, -2.004, 0.798};
103 //const G4double Eth_PPbar_NPbar_pip = 103 //const G4double Eth_PPbar_NPbar_pip = 0.798;
104 const std::vector<G4double> BFMM491 = 104 const std::vector<G4double> BFMM491 = {24.125, -20.669, -1.534, -19.573, 4.493, 0.787};
105 //const G4double Eth_NPbar_PPbar_pim = 105 //const G4double Eth_NPbar_PPbar_pim = 0.787;
106 const std::vector<G4double> BFMM495 = 106 const std::vector<G4double> BFMM495 = {-0.650, -0.140, -0.058, 5.166, -1.705, 0.777};
107 //const G4double Eth_NPbar_NPbar_pi0 = 107 //const G4double Eth_NPbar_NPbar_pi0 = 0.777;
108 108
109 // pnbar total is same as for npbar 109 // pnbar total is same as for npbar
110 // ppbar total is same as for nnbar 110 // ppbar total is same as for nnbar
111 const G4double totalppbar = KinematicsUtil << 111 const G4double totalppbar = KinematicsUtils::compute_xs(BFMM199, plab) +KinematicsUtils::compute_xs(BFMM185, plab) +KinematicsUtils::compute_xs(BFMM188, plab);
112 const G4double totalpnbar = KinematicsUtil 112 const G4double totalpnbar = KinematicsUtils::compute_xs(BFMM491, plab) +KinematicsUtils::compute_xs(BFMM495, plab) +KinematicsUtils::compute_xs(BFMM188, plab);
113 //totalnnbar == totalppbar; 113 //totalnnbar == totalppbar;
114 //totalpnbar == totalnpbar; 114 //totalpnbar == totalnpbar;
115 ParticleType PionType; 115 ParticleType PionType;
116 116
117 //setting types of new particles 117 //setting types of new particles
118 if(nucleon->getType()==Proton){ 118 if(nucleon->getType()==Proton){
119 if(antinucleon->getType()==antiProton){ 119 if(antinucleon->getType()==antiProton){ // ppbar case
120 if(rdm*totalppbar < KinematicsUtils::c 120 if(rdm*totalppbar < KinematicsUtils::compute_xs(BFMM185, plab)){ // ppbarpi0 case
121 PionType = PiZero; 121 PionType = PiZero;
122 if(rdm<0.5){ 122 if(rdm<0.5){
123 nucleon->setType(Proton); 123 nucleon->setType(Proton);
124 antinucleon->setType(antiProton); 124 antinucleon->setType(antiProton);
125 } 125 }
126 else{ 126 else{
127 nucleon->setType(antiProton); 127 nucleon->setType(antiProton);
128 antinucleon->setType(Proton); 128 antinucleon->setType(Proton);
129 } 129 }
130 } 130 }
131 else if(rdm*totalppbar < KinematicsUti << 131 else if(rdm*totalppbar < KinematicsUtils::compute_xs(BFMM185, plab)+KinematicsUtils::compute_xs(BFMM188, plab)){ //pnbarpi- case
132 PionType = PiMinus; 132 PionType = PiMinus;
133 if(rdm<0.5){ 133 if(rdm<0.5){
134 nucleon->setType(Proton); 134 nucleon->setType(Proton);
135 antinucleon->setType(antiNeutron); 135 antinucleon->setType(antiNeutron);
136 } 136 }
137 else{ 137 else{
138 nucleon->setType(antiNeutron); 138 nucleon->setType(antiNeutron);
139 antinucleon->setType(Proton); 139 antinucleon->setType(Proton);
140 } 140 }
141 } 141 }
142 else{ // npbarpi+ case 142 else{ // npbarpi+ case
143 PionType = PiPlus; 143 PionType = PiPlus;
144 if(rdm<0.5){ 144 if(rdm<0.5){
145 nucleon->setType(Neutron); 145 nucleon->setType(Neutron);
146 antinucleon->setType(antiProton); 146 antinucleon->setType(antiProton);
147 } 147 }
148 else{ 148 else{
149 nucleon->setType(antiProton); 149 nucleon->setType(antiProton);
150 antinucleon->setType(Neutron); 150 antinucleon->setType(Neutron);
151 } 151 }
152 } 152 }
153 } 153 }
154 else{ //antiNeutron (pnbar case) 154 else{ //antiNeutron (pnbar case)
155 if(rdm*totalpnbar < KinematicsUtils::c 155 if(rdm*totalpnbar < KinematicsUtils::compute_xs(BFMM491, plab)){ // ppbarpi+ case
156 PionType = PiPlus; 156 PionType = PiPlus;
157 if(rdm<0.5){ 157 if(rdm<0.5){
158 nucleon->setType(Proton); 158 nucleon->setType(Proton);
159 antinucleon->setType(antiProton); 159 antinucleon->setType(antiProton);
160 } 160 }
161 else{ 161 else{
162 nucleon->setType(antiProton); 162 nucleon->setType(antiProton);
163 antinucleon->setType(Proton); 163 antinucleon->setType(Proton);
164 } 164 }
165 } 165 }
166 else if(rdm*totalppbar < KinematicsUti << 166 else if(rdm*totalppbar < KinematicsUtils::compute_xs(BFMM491, plab)+KinematicsUtils::compute_xs(BFMM495, plab)){ //pnbarpi0 case
167 PionType = PiZero; 167 PionType = PiZero;
168 if(rdm<0.5){ 168 if(rdm<0.5){
169 nucleon->setType(Proton); 169 nucleon->setType(Proton);
170 antinucleon->setType(antiNeutron); 170 antinucleon->setType(antiNeutron);
171 } 171 }
172 else{ 172 else{
173 nucleon->setType(antiNeutron); 173 nucleon->setType(antiNeutron);
174 antinucleon->setType(Proton); 174 antinucleon->setType(Proton);
175 } 175 }
176 } 176 }
177 else{ // nnbarpi+ case 177 else{ // nnbarpi+ case
178 PionType = PiPlus; 178 PionType = PiPlus;
179 if(rdm<0.5){ 179 if(rdm<0.5){
180 nucleon->setType(Neutron); 180 nucleon->setType(Neutron);
181 antinucleon->setType(antiNeutron); 181 antinucleon->setType(antiNeutron);
182 } 182 }
183 else{ 183 else{
184 nucleon->setType(antiNeutron); 184 nucleon->setType(antiNeutron);
185 antinucleon->setType(Neutron); 185 antinucleon->setType(Neutron);
186 } 186 }
187 } 187 }
188 } 188 }
189 } 189 }
190 else{ // neutron 190 else{ // neutron
191 if(antinucleon->getType()==antiProton){ 191 if(antinucleon->getType()==antiProton){ //npbar case
192 if(rdm*totalpnbar < KinematicsUtils::c 192 if(rdm*totalpnbar < KinematicsUtils::compute_xs(BFMM491, plab)){ // ppbarpi- case
193 PionType = PiMinus; 193 PionType = PiMinus;
194 if(rdm<0.5){ 194 if(rdm<0.5){
195 nucleon->setType(Proton); 195 nucleon->setType(Proton);
196 antinucleon->setType(antiProton); 196 antinucleon->setType(antiProton);
197 } 197 }
198 else{ 198 else{
199 nucleon->setType(antiProton); 199 nucleon->setType(antiProton);
200 antinucleon->setType(Proton); 200 antinucleon->setType(Proton);
201 } 201 }
202 } 202 }
203 else if(rdm*totalppbar < KinematicsUti << 203 else if(rdm*totalppbar < KinematicsUtils::compute_xs(BFMM491, plab)+KinematicsUtils::compute_xs(BFMM495, plab)){ //npbarpi0 case
204 PionType = PiZero; 204 PionType = PiZero;
205 if(rdm<0.5){ 205 if(rdm<0.5){
206 nucleon->setType(Neutron); 206 nucleon->setType(Neutron);
207 antinucleon->setType(antiProton); 207 antinucleon->setType(antiProton);
208 } 208 }
209 else{ 209 else{
210 nucleon->setType(antiProton); 210 nucleon->setType(antiProton);
211 antinucleon->setType(Neutron); 211 antinucleon->setType(Neutron);
212 } 212 }
213 } 213 }
214 else{ // nnbarpi- case 214 else{ // nnbarpi- case
215 PionType = PiMinus; 215 PionType = PiMinus;
216 if(rdm<0.5){ 216 if(rdm<0.5){
217 nucleon->setType(Neutron); 217 nucleon->setType(Neutron);
218 antinucleon->setType(antiNeutron); 218 antinucleon->setType(antiNeutron);
219 } 219 }
220 else{ 220 else{
221 nucleon->setType(antiNeutron); 221 nucleon->setType(antiNeutron);
222 antinucleon->setType(Neutron); 222 antinucleon->setType(Neutron);
223 } 223 }
224 } 224 }
225 } 225 }
226 else{ //antiNeutron (nnbar case) 226 else{ //antiNeutron (nnbar case)
227 if(rdm*totalpnbar < KinematicsUtils::c 227 if(rdm*totalpnbar < KinematicsUtils::compute_xs(BFMM185, plab)){ // nnbarpi0 case
228 PionType = PiZero; 228 PionType = PiZero;
229 if(rdm<0.5){ 229 if(rdm<0.5){
230 nucleon->setType(Neutron); 230 nucleon->setType(Neutron);
231 antinucleon->setType(antiNeutron); 231 antinucleon->setType(antiNeutron);
232 } 232 }
233 else{ 233 else{
234 nucleon->setType(antiNeutron); 234 nucleon->setType(antiNeutron);
235 antinucleon->setType(Neutron); 235 antinucleon->setType(Neutron);
236 } 236 }
237 } 237 }
238 else if(rdm*totalpnbar < KinematicsUti << 238 else if(rdm*totalpnbar < KinematicsUtils::compute_xs(BFMM185, plab)+KinematicsUtils::compute_xs(BFMM188, plab)){ //pnbarpi- case
239 PionType = PiMinus; 239 PionType = PiMinus;
240 if(rdm<0.5){ 240 if(rdm<0.5){
241 nucleon->setType(Proton); 241 nucleon->setType(Proton);
242 antinucleon->setType(antiNeutron); 242 antinucleon->setType(antiNeutron);
243 } 243 }
244 else{ 244 else{
245 nucleon->setType(antiNeutron); 245 nucleon->setType(antiNeutron);
246 antinucleon->setType(Proton); 246 antinucleon->setType(Proton);
247 } 247 }
248 } 248 }
249 else{ // npbarpi+ case 249 else{ // npbarpi+ case
250 PionType = PiPlus; 250 PionType = PiPlus;
251 if(rdm<0.5){ 251 if(rdm<0.5){
252 nucleon->setType(Neutron); 252 nucleon->setType(Neutron);
253 antinucleon->setType(antiProton); 253 antinucleon->setType(antiProton);
254 } 254 }
255 else{ 255 else{
256 nucleon->setType(antiProton); 256 nucleon->setType(antiProton);
257 antinucleon->setType(Neutron); 257 antinucleon->setType(Neutron);
258 } 258 }
259 } 259 }
260 } 260 }
261 } 261 }
262 262
263 ParticleList list; 263 ParticleList list;
264 list.push_back(nucleon); 264 list.push_back(nucleon);
265 list.push_back(antinucleon); 265 list.push_back(antinucleon);
266 const ThreeVector &rcol = nucleon->getPosi 266 const ThreeVector &rcol = nucleon->getPosition();
267 const ThreeVector zero; 267 const ThreeVector zero;
268 Particle *pion = new Particle(PionType,zer 268 Particle *pion = new Particle(PionType,zero,rcol);
269 list.push_back(pion); 269 list.push_back(pion);
270 270
271 PhaseSpaceGenerator::generate(sqrtS, list) 271 PhaseSpaceGenerator::generate(sqrtS, list);
272 272
273 fs->addModifiedParticle(nucleon); 273 fs->addModifiedParticle(nucleon);
274 fs->addModifiedParticle(antinucleon); 274 fs->addModifiedParticle(antinucleon);
275 fs->addCreatedParticle(pion); 275 fs->addCreatedParticle(pion);
276 276
277 } 277 }
278 } 278 }
279 279