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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 /*
39 * G4INCLBinaryCollisionAvatar.cc
40 *
41 * \date Jun 5, 2009
42 * \author Pekka Kaitaniemi
43 */
44
45 #include "G4INCLBinaryCollisionAvatar.hh"
46 #include "G4INCLElasticChannel.hh"
47 #include "G4INCLRecombinationChannel.hh"
48 #include "G4INCLDeltaProductionChannel.hh"
49 #include "G4INCLNNToMultiPionsChannel.hh"
50 #include "G4INCLNNToNNEtaChannel.hh"
51 #include "G4INCLNDeltaEtaProductionChannel.hh"
52 #include "G4INCLNNEtaToMultiPionsChannel.hh"
53 #include "G4INCLNNToNNOmegaChannel.hh"
54 #include "G4INCLNDeltaOmegaProductionChannel.hh"
55 #include "G4INCLNNOmegaToMultiPionsChannel.hh"
56 #include "G4INCLCrossSections.hh"
57 #include "G4INCLKinematicsUtils.hh"
58 #include "G4INCLRandom.hh"
59 #include "G4INCLParticleTable.hh"
60 #include "G4INCLPauliBlocking.hh"
61 #include "G4INCLPiNElasticChannel.hh"
62 #include "G4INCLPiNToDeltaChannel.hh"
63 #include "G4INCLPiNToMultiPionsChannel.hh"
64 #include "G4INCLPiNToEtaChannel.hh"
65 #include "G4INCLPiNToOmegaChannel.hh"
66 #include "G4INCLEtaNElasticChannel.hh"
67 #include "G4INCLEtaNToPiNChannel.hh"
68 #include "G4INCLEtaNToPiPiNChannel.hh"
69 #include "G4INCLOmegaNElasticChannel.hh"
70 #include "G4INCLOmegaNToPiNChannel.hh"
71 #include "G4INCLNNToNLKChannel.hh"
72 #include "G4INCLNNToNSKChannel.hh"
73 #include "G4INCLNNToNLKpiChannel.hh"
74 #include "G4INCLNNToNSKpiChannel.hh"
75 #include "G4INCLNNToNLK2piChannel.hh"
76 #include "G4INCLNNToNSK2piChannel.hh"
77 #include "G4INCLNNToNNKKbChannel.hh"
78 #include "G4INCLNNToMissingStrangenessChannel.hh"
79 #include "G4INCLNDeltaToNLKChannel.hh"
80 #include "G4INCLNDeltaToNSKChannel.hh"
81 #include "G4INCLNDeltaToDeltaLKChannel.hh"
82 #include "G4INCLNDeltaToDeltaSKChannel.hh"
83 #include "G4INCLNDeltaToNNKKbChannel.hh"
84 #include "G4INCLNpiToLKChannel.hh"
85 #include "G4INCLNpiToSKChannel.hh"
86 #include "G4INCLNpiToLKpiChannel.hh"
87 #include "G4INCLNpiToSKpiChannel.hh"
88 #include "G4INCLNpiToLK2piChannel.hh"
89 #include "G4INCLNpiToSK2piChannel.hh"
90 #include "G4INCLNpiToNKKbChannel.hh"
91 #include "G4INCLNpiToMissingStrangenessChannel.hh"
92 #include "G4INCLNKElasticChannel.hh"
93 #include "G4INCLNKToNKChannel.hh"
94 #include "G4INCLNKToNKpiChannel.hh"
95 #include "G4INCLNKToNK2piChannel.hh"
96 #include "G4INCLNKbElasticChannel.hh"
97 #include "G4INCLNKbToNKbChannel.hh"
98 #include "G4INCLNKbToNKbpiChannel.hh"
99 #include "G4INCLNKbToNKb2piChannel.hh"
100 #include "G4INCLNKbToLpiChannel.hh"
101 #include "G4INCLNKbToL2piChannel.hh"
102 #include "G4INCLNKbToSpiChannel.hh"
103 #include "G4INCLNKbToS2piChannel.hh"
104 #include "G4INCLNYElasticChannel.hh"
105 #include "G4INCLNLToNSChannel.hh"
106 #include "G4INCLNSToNLChannel.hh"
107 #include "G4INCLNSToNSChannel.hh"
108 #include "G4INCLOmegaNToPiPiNChannel.hh"
109 #include "G4INCLStore.hh"
110 #include "G4INCLBook.hh"
111 #include "G4INCLLogger.hh"
112 #include <string>
113 #include <sstream>
114 // #include <cassert>
115 #include "G4INCLNNbarElasticChannel.hh"
116 #include "G4INCLNNbarCEXChannel.hh"
117 #include "G4INCLNNbarToLLbarChannel.hh"
118 #include "G4INCLNNbarToNNbarpiChannel.hh"
119 #include "G4INCLNNbarToNNbar2piChannel.hh"
120 #include "G4INCLNNbarToNNbar3piChannel.hh"
121 #include "G4INCLNNbarToAnnihilationChannel.hh"
122
123 namespace G4INCL {
124
125 // WARNING: if you update the default cutNN value, make sure you update the
126 // cutNNSquared variable, too.
127 G4ThreadLocal G4double BinaryCollisionAvatar::cutNN = 1910.0;
128 G4ThreadLocal G4double BinaryCollisionAvatar::cutNNSquared = 3648100.0; // 1910.0 * 1910.0
129 G4ThreadLocal G4double BinaryCollisionAvatar::bias = 1.;
130
131 BinaryCollisionAvatar::BinaryCollisionAvatar(G4double time, G4double crossSection,
132 G4INCL::Nucleus *n, G4INCL::Particle *p1, G4INCL::Particle *p2)
133 : InteractionAvatar(time, n, p1, p2), theCrossSection(crossSection),
134 isParticle1Spectator(false),
135 isParticle2Spectator(false),
136 isElastic(false),
137 isStrangeProduction(false)
138 {
139 setType(CollisionAvatarType);
140 }
141
142 BinaryCollisionAvatar::~BinaryCollisionAvatar() {
143 }
144
145 G4INCL::IChannel* BinaryCollisionAvatar::getChannel() {
146 // We already check cutNN at avatar creation time, but we have to check it
147 // again here. For composite projectiles, we might have created independent
148 // avatars with no cutNN before any collision took place.
149 if(particle1->isNucleon()
150 && particle2->isNucleon()
151 && theNucleus->getStore()->getBook().getAcceptedCollisions()!=0) {
152 const G4double energyCM2 = KinematicsUtils::squareTotalEnergyInCM(particle1, particle2);
153 // Below a certain cut value we don't do anything:
154 if(energyCM2 < cutNNSquared) {
155 INCL_DEBUG("CM energy = sqrt(" << energyCM2 << ") MeV < std::sqrt(" << cutNNSquared
156 << ") MeV = cutNN" << "; returning a NULL channel" << '\n');
157 InteractionAvatar::restoreParticles();
158 return NULL;
159 }
160 }
161
162 /** Check again the distance of approach. In order for the avatar to be
163 * realised, we have to perform a check in the CM system. We define a
164 * distance four-vector as
165 * \f[ (0, \Delta\vec{x}), \f]
166 * where \f$\Delta\vec{x}\f$ is the distance vector of the particles at
167 * their minimum distance of approach (i.e. at the avatar time). By
168 * boosting this four-vector to the CM frame of the two particles and we
169 * obtain a new four vector
170 * \f[ (\Delta t', \Delta\vec{x}'), \f]
171 * with a non-zero time component (the collision happens simultaneously for
172 * the two particles in the lab system, but not in the CM system). In order
173 * for the avatar to be realised, we require that
174 * \f[ |\Delta\vec{x}'| \leq \sqrt{\sigma/\pi}.\f]
175 * Note that \f$|\Delta\vec{x}'|\leq|\Delta\vec{x}|\f$; thus, the condition
176 * above is more restrictive than the check that we perform in
177 * G4INCL::Propagation::StandardPropagationModel::generateBinaryCollisionAvatar.
178 * In other words, the avatar generation cannot miss any physical collision
179 * avatars.
180 */
181 ThreeVector minimumDistance = particle1->getPosition();
182 minimumDistance -= particle2->getPosition();
183 const G4double betaDotX = boostVector.dot(minimumDistance);
184 const G4double minDist = Math::tenPi*(minimumDistance.mag2() + betaDotX*betaDotX / (1.-boostVector.mag2()));
185 if(minDist > theCrossSection) {
186 INCL_DEBUG("CM distance of approach is too small: " << minDist << ">" <<
187 theCrossSection <<"; returning a NULL channel" << '\n');
188 InteractionAvatar::restoreParticles();
189 return NULL;
190 }
191
192 /** Bias apply for this reaction in order to get the same
193 * ParticleBias for all stange particles.
194 * Can be reduced after because of the safeguard.
195 */
196 G4double bias_apply = 1.;
197 if(bias != 1.) bias_apply = Particle::getBiasFromVector(Particle::MergeVectorBias(particle1,particle2)) * bias;
198
199 //// NN
200 if(particle1->isNucleon() && particle2->isNucleon()) {
201
202 G4double NLKProductionCX = CrossSections::NNToNLK(particle1, particle2)*bias_apply;
203 G4double NSKProductionCX = CrossSections::NNToNSK(particle1, particle2)*bias_apply;
204 G4double NLKpiProductionCX = CrossSections::NNToNLKpi(particle1, particle2)*bias_apply;
205 G4double NSKpiProductionCX = CrossSections::NNToNSKpi(particle1, particle2)*bias_apply;
206 G4double NLK2piProductionCX = CrossSections::NNToNLK2pi(particle1, particle2)*bias_apply;
207 G4double NSK2piProductionCX = CrossSections::NNToNSK2pi(particle1, particle2)*bias_apply;
208 G4double NNKKbProductionCX = CrossSections::NNToNNKKb(particle1, particle2)*bias_apply;
209 G4double NNMissingCX = CrossSections::NNToMissingStrangeness(particle1, particle2)*bias_apply;
210
211 const G4double UnStrangeProdCX = CrossSections::elastic(particle1, particle2) + CrossSections::NNToNDelta(particle1, particle2) + CrossSections::NNToxPiNN(1,particle1, particle2)
212 + CrossSections::NNToxPiNN(2,particle1, particle2) + CrossSections::NNToxPiNN(3,particle1, particle2) + CrossSections::NNToxPiNN(4,particle1, particle2)
213 + CrossSections::NNToNNEtaExclu(particle1, particle2) + CrossSections::NNToNDeltaEta(particle1, particle2) + CrossSections::NNToNNEtaxPi(1,particle1, particle2)
214 + CrossSections::NNToNNEtaxPi(2,particle1, particle2) + CrossSections::NNToNNEtaxPi(3,particle1, particle2) + CrossSections::NNToNNEtaxPi(4,particle1, particle2)
215 + CrossSections::NNToNNOmegaExclu(particle1, particle2) + CrossSections::NNToNDeltaOmega(particle1, particle2) + CrossSections::NNToNNOmegaxPi(1,particle1, particle2)
216 + CrossSections::NNToNNOmegaxPi(2,particle1, particle2) + CrossSections::NNToNNOmegaxPi(3,particle1, particle2) + CrossSections::NNToNNOmegaxPi(4,particle1, particle2);
217 const G4double StrangenessProdCX = (NLKProductionCX + NSKProductionCX + NLKpiProductionCX + NSKpiProductionCX + NLK2piProductionCX + NSK2piProductionCX + NNKKbProductionCX + NNMissingCX)/bias_apply;
218
219 G4double counterweight = (1. - bias_apply * StrangenessProdCX / (StrangenessProdCX + UnStrangeProdCX))/(1. - StrangenessProdCX / (StrangenessProdCX + UnStrangeProdCX));
220
221 if(counterweight < 0.5) {
222 counterweight = 0.5;
223 bias_apply = 0.5*UnStrangeProdCX/StrangenessProdCX+1;
224 NLKProductionCX = CrossSections::NNToNLK(particle1, particle2)*bias_apply;
225 NSKProductionCX = CrossSections::NNToNSK(particle1, particle2)*bias_apply;
226 NLKpiProductionCX = CrossSections::NNToNLKpi(particle1, particle2)*bias_apply;
227 NSKpiProductionCX = CrossSections::NNToNSKpi(particle1, particle2)*bias_apply;
228 NLK2piProductionCX = CrossSections::NNToNLK2pi(particle1, particle2)*bias_apply;
229 NSK2piProductionCX = CrossSections::NNToNSK2pi(particle1, particle2)*bias_apply;
230 NNKKbProductionCX = CrossSections::NNToNNKKb(particle1, particle2)*bias_apply;
231 NNMissingCX = CrossSections::NNToMissingStrangeness(particle1, particle2)*bias_apply;
232 }
233
234
235 const G4double elasticCX = CrossSections::elastic(particle1, particle2)*counterweight;
236 const G4double deltaProductionCX = CrossSections::NNToNDelta(particle1, particle2)*counterweight;
237 const G4double onePiProductionCX = CrossSections::NNToxPiNN(1,particle1, particle2)*counterweight;
238 const G4double twoPiProductionCX = CrossSections::NNToxPiNN(2,particle1, particle2)*counterweight;
239 const G4double threePiProductionCX = CrossSections::NNToxPiNN(3,particle1, particle2)*counterweight;
240 const G4double fourPiProductionCX = CrossSections::NNToxPiNN(4,particle1, particle2)*counterweight;
241
242 const G4double etaProductionCX = CrossSections::NNToNNEtaExclu(particle1, particle2)*counterweight;
243 const G4double etadeltaProductionCX = CrossSections::NNToNDeltaEta(particle1, particle2)*counterweight;
244 const G4double etaonePiProductionCX = CrossSections::NNToNNEtaxPi(1,particle1, particle2)*counterweight;
245 const G4double etatwoPiProductionCX = CrossSections::NNToNNEtaxPi(2,particle1, particle2)*counterweight;
246 const G4double etathreePiProductionCX = CrossSections::NNToNNEtaxPi(3,particle1, particle2)*counterweight;
247 const G4double etafourPiProductionCX = CrossSections::NNToNNEtaxPi(4,particle1, particle2)*counterweight;
248 const G4double omegaProductionCX = CrossSections::NNToNNOmegaExclu(particle1, particle2)*counterweight;
249 const G4double omegadeltaProductionCX = CrossSections::NNToNDeltaOmega(particle1, particle2)*counterweight;
250 const G4double omegaonePiProductionCX = CrossSections::NNToNNOmegaxPi(1,particle1, particle2)*counterweight;
251 const G4double omegatwoPiProductionCX = CrossSections::NNToNNOmegaxPi(2,particle1, particle2)*counterweight;
252 const G4double omegathreePiProductionCX = CrossSections::NNToNNOmegaxPi(3,particle1, particle2)*counterweight;
253 const G4double omegafourPiProductionCX = CrossSections::NNToNNOmegaxPi(4,particle1, particle2)*counterweight;
254
255 const G4double totCX=CrossSections::total(particle1, particle2);
256
257 // assert(std::fabs(totCX-elasticCX-deltaProductionCX-onePiProductionCX-twoPiProductionCX-threePiProductionCX-fourPiProductionCX-NLKProductionCX-NSKProductionCX-NLKpiProductionCX-NSKpiProductionCX-NLK2piProductionCX-NSK2piProductionCX-NNKKbProductionCX-NNMissingCX-etaProductionCX-etadeltaProductionCX-etaonePiProductionCX-etatwoPiProductionCX-etathreePiProductionCX-etafourPiProductionCX-omegaProductionCX-omegadeltaProductionCX-omegaonePiProductionCX-omegatwoPiProductionCX-omegathreePiProductionCX-omegafourPiProductionCX) < 0.5);
258
259 const G4double rChannel=Random::shoot() * totCX;
260
261 if(elasticCX > rChannel) {
262 // Elastic NN channel
263 isElastic = true;
264 INCL_DEBUG("NN interaction: elastic channel chosen" << '\n');
265 weight = counterweight;
266 return new ElasticChannel(particle1, particle2);
267 } else if((elasticCX + deltaProductionCX) > rChannel) {
268 isElastic = false;
269 // NN -> N Delta channel is chosen
270 INCL_DEBUG("NN interaction: Delta channel chosen" << '\n');
271 weight = counterweight;
272 return new DeltaProductionChannel(particle1, particle2);
273 } else if(elasticCX + deltaProductionCX + onePiProductionCX > rChannel) {
274 isElastic = false;
275 // NN -> PiNN channel is chosen
276 INCL_DEBUG("NN interaction: one Pion channel chosen" << '\n');
277 weight = counterweight;
278 return new NNToMultiPionsChannel(1,particle1, particle2);
279 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX > rChannel) {
280 isElastic = false;
281 // NN -> 2PiNN channel is chosen
282 INCL_DEBUG("NN interaction: two Pions channel chosen" << '\n');
283 weight = counterweight;
284 return new NNToMultiPionsChannel(2,particle1, particle2);
285 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX > rChannel) {
286 isElastic = false;
287 // NN -> 3PiNN channel is chosen
288 INCL_DEBUG("NN interaction: three Pions channel chosen" << '\n');
289 weight = counterweight;
290 return new NNToMultiPionsChannel(3,particle1, particle2);
291 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX > rChannel) {
292 isElastic = false;
293 // NN -> 4PiNN channel is chosen
294 INCL_DEBUG("NN interaction: four Pions channel chosen" << '\n');
295 weight = counterweight;
296 return new NNToMultiPionsChannel(4,particle1, particle2);
297 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
298 + etaProductionCX > rChannel) {
299 isElastic = false;
300 // NN -> NNEta channel is chosen
301 INCL_DEBUG("NN interaction: Eta channel chosen" << '\n');
302 weight = counterweight;
303 return new NNToNNEtaChannel(particle1, particle2);
304 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
305 + etaProductionCX + etadeltaProductionCX > rChannel) {
306 isElastic = false;
307 // NN -> N Delta Eta channel is chosen
308 INCL_DEBUG("NN interaction: Delta Eta channel chosen" << '\n');
309 weight = counterweight;
310 return new NDeltaEtaProductionChannel(particle1, particle2);
311 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
312 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX > rChannel) {
313 isElastic = false;
314 // NN -> EtaPiNN channel is chosen
315 INCL_DEBUG("NN interaction: Eta + one Pion channel chosen" << '\n');
316 weight = counterweight;
317 return new NNEtaToMultiPionsChannel(1,particle1, particle2);
318 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
319 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX > rChannel) {
320 isElastic = false;
321 // NN -> Eta2PiNN channel is chosen
322 INCL_DEBUG("NN interaction: Eta + two Pions channel chosen" << '\n');
323 weight = counterweight;
324 return new NNEtaToMultiPionsChannel(2,particle1, particle2);
325 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
326 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX > rChannel) {
327 isElastic = false;
328 // NN -> Eta3PiNN channel is chosen
329 INCL_DEBUG("NN interaction: Eta + three Pions channel chosen" << '\n');
330 weight = counterweight;
331 return new NNEtaToMultiPionsChannel(3,particle1, particle2);
332 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
333 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX > rChannel) {
334 isElastic = false;
335 // NN -> Eta4PiNN channel is chosen
336 INCL_DEBUG("NN interaction: Eta + four Pions channel chosen" << '\n');
337 weight = counterweight;
338 return new NNEtaToMultiPionsChannel(4,particle1, particle2);
339 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
340 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
341 + omegaProductionCX > rChannel) {
342 isElastic = false;
343 // NN -> NNOmega channel is chosen
344 INCL_DEBUG("NN interaction: Omega channel chosen" << '\n');
345 weight = counterweight;
346 return new NNToNNOmegaChannel(particle1, particle2);
347 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
348 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
349 + omegaProductionCX + omegadeltaProductionCX > rChannel) {
350 isElastic = false;
351 // NN -> N Delta Omega channel is chosen
352 INCL_DEBUG("NN interaction: Delta Omega channel chosen" << '\n');
353 weight = counterweight;
354 return new NDeltaOmegaProductionChannel(particle1, particle2);
355 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
356 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
357 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX > rChannel) {
358 isElastic = false;
359 // NN -> OmegaPiNN channel is chosen
360 INCL_DEBUG("NN interaction: Omega + one Pion channel chosen" << '\n');
361 weight = counterweight;
362 return new NNOmegaToMultiPionsChannel(1,particle1, particle2);
363 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
364 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
365 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX > rChannel) {
366 isElastic = false;
367 // NN -> Omega2PiNN channel is chosen
368 INCL_DEBUG("NN interaction: Omega + two Pions channel chosen" << '\n');
369 weight = counterweight;
370 return new NNOmegaToMultiPionsChannel(2,particle1, particle2);
371 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
372 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
373 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX > rChannel) {
374 isElastic = false;
375 // NN -> Omega3PiNN channel is chosen
376 INCL_DEBUG("NN interaction: Omega + three Pions channel chosen" << '\n');
377 weight = counterweight;
378 return new NNOmegaToMultiPionsChannel(3,particle1, particle2);
379 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
380 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
381 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX > rChannel) {
382 isElastic = false;
383 // NN -> Omega4PiNN channel is chosen
384 INCL_DEBUG("NN interaction: Omega + four Pions channel chosen" << '\n');
385 weight = counterweight;
386 return new NNOmegaToMultiPionsChannel(4,particle1, particle2);
387 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
388 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
389 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
390 + NLKProductionCX > rChannel) {
391 isElastic = false;
392 isStrangeProduction = true;
393 // NN -> NLK channel is chosen
394 INCL_DEBUG("NN interaction: NLK channel chosen" << '\n');
395 weight = bias_apply;
396 return new NNToNLKChannel(particle1, particle2);
397 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
398 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
399 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
400 + NLKProductionCX + NLKpiProductionCX > rChannel) {
401 isElastic = false;
402 isStrangeProduction = true;
403 // NN -> NLKpi channel is chosen
404 INCL_DEBUG("NN interaction: NLKpi channel chosen" << '\n');
405 weight = bias_apply;
406 return new NNToNLKpiChannel(particle1, particle2);
407 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
408 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
409 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
410 + NLKProductionCX + NLKpiProductionCX + NLK2piProductionCX > rChannel) {
411 isElastic = false;
412 isStrangeProduction = true;
413 // NN -> NLK2pi channel is chosen
414 INCL_DEBUG("NN interaction: NLK2pi channel chosen" << '\n');
415 weight = bias_apply;
416 return new NNToNLK2piChannel(particle1, particle2);
417 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
418 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
419 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
420 + NLKProductionCX + NLKpiProductionCX + NLK2piProductionCX + NSKProductionCX > rChannel) {
421 isElastic = false;
422 isStrangeProduction = true;
423 // NN -> NSK channel is chosen
424 INCL_DEBUG("NN interaction: NSK channel chosen" << '\n');
425 weight = bias_apply;
426 return new NNToNSKChannel(particle1, particle2);
427 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
428 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
429 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
430 + NLKProductionCX + NLKpiProductionCX + NLK2piProductionCX + NSKProductionCX + NSKpiProductionCX > rChannel) {
431 isElastic = false;
432 isStrangeProduction = true;
433 // NN -> NSKpi channel is chosen
434 INCL_DEBUG("NN interaction: NSKpi channel chosen" << '\n');
435 weight = bias_apply;
436 return new NNToNSKpiChannel(particle1, particle2);
437 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
438 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
439 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
440 + NLKProductionCX + NLKpiProductionCX + NLK2piProductionCX + NSKProductionCX + NSKpiProductionCX + NSK2piProductionCX > rChannel) {
441 isElastic = false;
442 isStrangeProduction = true;
443 // NN -> NSK2pi channel is chosen
444 INCL_DEBUG("NN interaction: NSK2pi channel chosen" << '\n');
445 weight = bias_apply;
446 return new NNToNSK2piChannel(particle1, particle2);
447 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
448 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
449 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
450 + NLKProductionCX + NLKpiProductionCX + NLK2piProductionCX + NSKProductionCX + NSKpiProductionCX + NSK2piProductionCX + NNKKbProductionCX > rChannel) {
451 isElastic = false;
452 isStrangeProduction = true;
453 // NN -> NNKKb channel is chosen
454 INCL_DEBUG("NN interaction: NNKKb channel chosen" << '\n');
455 weight = bias_apply;
456 return new NNToNNKKbChannel(particle1, particle2);
457 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + fourPiProductionCX
458 + etaProductionCX + etadeltaProductionCX + etaonePiProductionCX + etatwoPiProductionCX + etathreePiProductionCX + etafourPiProductionCX
459 + omegaProductionCX + omegadeltaProductionCX + omegaonePiProductionCX + omegatwoPiProductionCX + omegathreePiProductionCX + omegafourPiProductionCX
460 + NLKProductionCX + NLKpiProductionCX + NLK2piProductionCX + NSKProductionCX + NSKpiProductionCX + NSK2piProductionCX + NNKKbProductionCX + NNMissingCX> rChannel) {
461 isElastic = false;
462 isStrangeProduction = true;
463 // NN -> Missing Strangeness channel is chosen
464 INCL_DEBUG("NN interaction: Missing Strangeness channel chosen" << '\n');
465 weight = bias_apply;
466 return new NNToMissingStrangenessChannel(particle1, particle2);
467 } else {
468 INCL_WARN("inconsistency within the NN Cross Sections (sum!=inelastic)" << '\n');
469 if(NNMissingCX>0.) {
470 INCL_WARN("Returning an Missing Strangeness channel" << '\n');
471 weight = bias_apply;
472 isElastic = false;
473 isStrangeProduction = true;
474 return new NNToNNKKbChannel(particle1, particle2);
475 } else if(NNKKbProductionCX>0.) {
476 INCL_WARN("Returning an NNKKb channel" << '\n');
477 weight = bias_apply;
478 isElastic = false;
479 isStrangeProduction = true;
480 return new NNToNNKKbChannel(particle1, particle2);
481 } else if(NSK2piProductionCX>0.) {
482 INCL_WARN("Returning an NSK2pi channel" << '\n');
483 weight = bias_apply;
484 isElastic = false;
485 isStrangeProduction = true;
486 return new NNToNSK2piChannel(particle1, particle2);
487 } else if(NSKpiProductionCX>0.) {
488 INCL_WARN("Returning an NSKpi channel" << '\n');
489 weight = bias_apply;
490 isElastic = false;
491 isStrangeProduction = true;
492 return new NNToNSKpiChannel(particle1, particle2);
493 } else if(NSKProductionCX>0.) {
494 INCL_WARN("Returning an NSK channel" << '\n');
495 weight = bias_apply;
496 isElastic = false;
497 isStrangeProduction = true;
498 return new NNToNSKChannel(particle1, particle2);
499 } else if(NLK2piProductionCX>0.) {
500 INCL_WARN("Returning an NLK2pi channel" << '\n');
501 weight = bias_apply;
502 isElastic = false;
503 isStrangeProduction = true;
504 return new NNToNLK2piChannel(particle1, particle2);
505 } else if(NLKpiProductionCX>0.) {
506 INCL_WARN("Returning an NLKpi channel" << '\n');
507 weight = bias_apply;
508 isElastic = false;
509 isStrangeProduction = true;
510 return new NNToNLKpiChannel(particle1, particle2);
511 } else if(NLKProductionCX>0.) {
512 INCL_WARN("Returning an NLK channel" << '\n');
513 weight = bias_apply;
514 isElastic = false;
515 isStrangeProduction = true;
516 return new NNToNLKChannel(particle1, particle2);
517 } else if(omegafourPiProductionCX>0.) {
518 INCL_WARN("Returning an Omega + four Pions channel" << '\n');
519 weight = counterweight;
520 isElastic = false;
521 return new NNOmegaToMultiPionsChannel(4,particle1, particle2);
522 } else if(omegathreePiProductionCX>0.) {
523 INCL_WARN("Returning an Omega + three Pions channel" << '\n');
524 weight = counterweight;
525 isElastic = false;
526 return new NNOmegaToMultiPionsChannel(3,particle1, particle2);
527 } else if(omegatwoPiProductionCX>0.) {
528 INCL_WARN("Returning an Omega + two Pions channel" << '\n');
529 weight = counterweight;
530 isElastic = false;
531 return new NNOmegaToMultiPionsChannel(2,particle1, particle2);
532 } else if(omegaonePiProductionCX>0.) {
533 INCL_WARN("Returning an Omega + one Pion channel" << '\n');
534 weight = counterweight;
535 isElastic = false;
536 return new NNOmegaToMultiPionsChannel(1,particle1, particle2);
537 } else if(omegadeltaProductionCX>0.) {
538 INCL_WARN("Returning an Omega + Delta channel" << '\n');
539 weight = counterweight;
540 isElastic = false;
541 return new NDeltaOmegaProductionChannel(particle1, particle2);
542 } else if(omegaProductionCX>0.) {
543 INCL_WARN("Returning an Omega channel" << '\n');
544 weight = counterweight;
545 isElastic = false;
546 return new NNToNNOmegaChannel(particle1, particle2);
547 } else if(etafourPiProductionCX>0.) {
548 INCL_WARN("Returning an Eta + four Pions channel" << '\n');
549 weight = counterweight;
550 isElastic = false;
551 return new NNEtaToMultiPionsChannel(4,particle1, particle2);
552 } else if(etathreePiProductionCX>0.) {
553 INCL_WARN("Returning an Eta + threev channel" << '\n');
554 weight = counterweight;
555 isElastic = false;
556 return new NNEtaToMultiPionsChannel(3,particle1, particle2);
557 } else if(etatwoPiProductionCX>0.) {
558 INCL_WARN("Returning an Eta + two Pions channel" << '\n');
559 weight = counterweight;
560 isElastic = false;
561 return new NNEtaToMultiPionsChannel(2,particle1, particle2);
562 } else if(etaonePiProductionCX>0.) {
563 INCL_WARN("Returning an Eta + one Pion channel" << '\n');
564 weight = counterweight;
565 isElastic = false;
566 return new NNEtaToMultiPionsChannel(1,particle1, particle2);
567 } else if(etadeltaProductionCX>0.) {
568 INCL_WARN("Returning an Eta + Delta channel" << '\n');
569 weight = counterweight;
570 isElastic = false;
571 return new NDeltaEtaProductionChannel(particle1, particle2);
572 } else if(etaProductionCX>0.) {
573 INCL_WARN("Returning an Eta channel" << '\n');
574 weight = counterweight;
575 isElastic = false;
576 return new NNToNNEtaChannel(particle1, particle2);
577 } else if(fourPiProductionCX>0.) {
578 INCL_WARN("Returning a 4pi channel" << '\n');
579 weight = counterweight;
580 isElastic = false;
581 return new NNToMultiPionsChannel(4,particle1, particle2);
582 } else if(threePiProductionCX>0.) {
583 INCL_WARN("Returning a 3pi channel" << '\n');
584 weight = counterweight;
585 isElastic = false;
586 return new NNToMultiPionsChannel(3,particle1, particle2);
587 } else if(twoPiProductionCX>0.) {
588 INCL_WARN("Returning a 2pi channel" << '\n');
589 weight = counterweight;
590 isElastic = false;
591 return new NNToMultiPionsChannel(2,particle1, particle2);
592 } else if(onePiProductionCX>0.) {
593 INCL_WARN("Returning a 1pi channel" << '\n');
594 weight = counterweight;
595 isElastic = false;
596 return new NNToMultiPionsChannel(1,particle1, particle2);
597 } else if(deltaProductionCX>0.) {
598 INCL_WARN("Returning a delta-production channel" << '\n');
599 weight = counterweight;
600 isElastic = false;
601 return new DeltaProductionChannel(particle1, particle2);
602 } else {
603 INCL_WARN("Returning an elastic channel" << '\n');
604 weight = counterweight;
605 isElastic = true;
606 return new ElasticChannel(particle1, particle2);
607 }
608 }
609
610 //// NDelta
611 }
612 else if((particle1->isNucleon() && particle2->isDelta()) ||
613 (particle1->isDelta() && particle2->isNucleon())) {
614
615 G4double NLKProductionCX = CrossSections::NDeltaToNLK(particle1, particle2)*bias_apply;
616 G4double NSKProductionCX = CrossSections::NDeltaToNSK(particle1, particle2)*bias_apply;
617 G4double DeltaLKProductionCX = CrossSections::NDeltaToDeltaLK(particle1, particle2)*bias_apply;
618 G4double DeltaSKProductionCX = CrossSections::NDeltaToDeltaSK(particle1, particle2)*bias_apply;
619 G4double NNKKbProductionCX = CrossSections::NDeltaToNNKKb(particle1, particle2)*bias_apply;
620
621 const G4double UnStrangeProdCX = CrossSections::elastic(particle1, particle2) + CrossSections::NDeltaToNN(particle1, particle2);
622 const G4double StrangenessProdCX = (NLKProductionCX + NSKProductionCX + DeltaLKProductionCX + DeltaSKProductionCX + NNKKbProductionCX)/bias_apply;
623
624 G4double counterweight = (1. - bias_apply * StrangenessProdCX / (StrangenessProdCX + UnStrangeProdCX))/(1. - StrangenessProdCX / (StrangenessProdCX + UnStrangeProdCX));
625
626 if(counterweight < 0.5){
627 counterweight = 0.5;
628 bias_apply = 0.5*UnStrangeProdCX/StrangenessProdCX+1;
629
630 NLKProductionCX = CrossSections::NDeltaToNLK(particle1, particle2)*bias_apply;
631 NSKProductionCX = CrossSections::NDeltaToNSK(particle1, particle2)*bias_apply;
632 DeltaLKProductionCX = CrossSections::NDeltaToDeltaLK(particle1, particle2)*bias_apply;
633 DeltaSKProductionCX = CrossSections::NDeltaToDeltaSK(particle1, particle2)*bias_apply;
634 NNKKbProductionCX = CrossSections::NDeltaToNNKKb(particle1, particle2)*bias_apply;
635 }
636
637 G4double elasticCX = CrossSections::elastic(particle1, particle2)*counterweight;
638 G4double recombinationCX = CrossSections::NDeltaToNN(particle1, particle2)*counterweight;
639
640 const G4double rChannel=Random::shoot() * (StrangenessProdCX + UnStrangeProdCX);
641
642 if(elasticCX > rChannel) {
643 isElastic = true;
644 // Elastic N Delta channel
645 INCL_DEBUG("NDelta interaction: elastic channel chosen" << '\n');
646 weight = counterweight;
647 return new ElasticChannel(particle1, particle2);
648 } else if (elasticCX + recombinationCX > rChannel){
649 isElastic = false;
650 // Recombination
651 // NDelta -> NN channel is chosen
652 INCL_DEBUG("NDelta interaction: recombination channel chosen" << '\n');
653 weight = counterweight;
654 return new RecombinationChannel(particle1, particle2);
655 } else if (elasticCX + recombinationCX + NLKProductionCX > rChannel){
656 isElastic = false;
657 isStrangeProduction = true;
658 // NDelta -> NLK channel is chosen
659 INCL_DEBUG("NDelta interaction: NLK channel chosen" << '\n');
660 weight = bias_apply;
661 return new NDeltaToNLKChannel(particle1, particle2);
662 } else if (elasticCX + recombinationCX + NLKProductionCX + NSKProductionCX > rChannel){
663 isElastic = false;
664 isStrangeProduction = true;
665 // NDelta -> NSK channel is chosen
666 INCL_DEBUG("NDelta interaction: NSK channel chosen" << '\n');
667 weight = bias_apply;
668 return new NDeltaToNSKChannel(particle1, particle2);
669 } else if (elasticCX + recombinationCX + NLKProductionCX + NSKProductionCX + DeltaLKProductionCX > rChannel){
670 isElastic = false;
671 isStrangeProduction = true;
672 // NDelta -> DeltaLK channel is chosen
673 INCL_DEBUG("NDelta interaction: DeltaLK channel chosen" << '\n');
674 weight = bias_apply;
675 return new NDeltaToDeltaLKChannel(particle1, particle2);
676 } else if (elasticCX + recombinationCX + NLKProductionCX + NSKProductionCX + DeltaLKProductionCX + DeltaSKProductionCX > rChannel){
677 isElastic = false;
678 isStrangeProduction = true;
679 // NDelta -> DeltaSK channel is chosen
680 INCL_DEBUG("NDelta interaction: DeltaSK channel chosen" << '\n');
681 weight = bias_apply;
682 return new NDeltaToDeltaSKChannel(particle1, particle2);
683 } else if (elasticCX + recombinationCX + NLKProductionCX + NSKProductionCX + DeltaLKProductionCX + DeltaSKProductionCX + NNKKbProductionCX > rChannel){
684 isElastic = false;
685 isStrangeProduction = true;
686 // NDelta -> NNKKb channel is chosen
687 INCL_DEBUG("NDelta interaction: NNKKb channel chosen" << '\n');
688 weight = bias_apply;
689 return new NDeltaToNNKKbChannel(particle1, particle2);
690 }
691 else{
692 INCL_ERROR("rChannel > (StrangenessProdCX + UnStrangeProdCX) in NDelta interaction: return an elastic channel" << '\n');
693 weight = counterweight;
694 isElastic = true;
695 return new ElasticChannel(particle1, particle2);
696 }
697
698 //// DeltaDelta
699 } else if(particle1->isDelta() && particle2->isDelta()) {
700 isElastic = true;
701 INCL_DEBUG("DeltaDelta interaction: elastic channel chosen" << '\n');
702 return new ElasticChannel(particle1, particle2);
703
704 //// PiN
705 } else if(isPiN) {
706
707 G4double LKProdCX = CrossSections::NpiToLK(particle1,particle2)*bias_apply;
708 G4double SKProdCX = CrossSections::NpiToSK(particle1,particle2)*bias_apply;
709 G4double LKpiProdCX = CrossSections::NpiToLKpi(particle1,particle2)*bias_apply;
710 G4double SKpiProdCX = CrossSections::NpiToSKpi(particle1,particle2)*bias_apply;
711 G4double LK2piProdCX = CrossSections::NpiToLK2pi(particle1,particle2)*bias_apply;
712 G4double SK2piProdCX = CrossSections::NpiToSK2pi(particle1,particle2)*bias_apply;
713 G4double NKKbProdCX = CrossSections::NpiToNKKb(particle1,particle2)*bias_apply;
714 G4double MissingCX = CrossSections::NpiToMissingStrangeness(particle1,particle2)*bias_apply;
715
716 const G4double UnStrangeProdCX = CrossSections::elastic(particle1, particle2) + CrossSections::piNToDelta(particle1, particle2)
717 + CrossSections::piNToxPiN(2,particle1, particle2) + CrossSections::piNToxPiN(3,particle1, particle2) + CrossSections::piNToxPiN(4,particle1, particle2)
718 + CrossSections::piNToEtaN(particle1, particle2) + CrossSections::piNToOmegaN(particle1, particle2);
719 const G4double StrangenessProdCX = (LKProdCX + SKProdCX + LKpiProdCX + SKpiProdCX + LK2piProdCX + SK2piProdCX + NKKbProdCX + MissingCX)/bias_apply;
720
721 G4double counterweight = (1. - bias_apply * StrangenessProdCX / (StrangenessProdCX + UnStrangeProdCX))/(1. - StrangenessProdCX / (StrangenessProdCX + UnStrangeProdCX));
722
723 if(counterweight < 0.5) {
724 counterweight = 0.5;
725 bias_apply = 0.5*UnStrangeProdCX/StrangenessProdCX+1;
726 LKProdCX = CrossSections::NpiToLK(particle1,particle2)*bias_apply;
727 SKProdCX = CrossSections::NpiToSK(particle1,particle2)*bias_apply;
728 LKpiProdCX = CrossSections::NpiToLKpi(particle1,particle2)*bias_apply;
729 SKpiProdCX = CrossSections::NpiToSKpi(particle1,particle2)*bias_apply;
730 LK2piProdCX = CrossSections::NpiToLK2pi(particle1,particle2)*bias_apply;
731 SK2piProdCX = CrossSections::NpiToSK2pi(particle1,particle2)*bias_apply;
732 NKKbProdCX = CrossSections::NpiToNKKb(particle1,particle2)*bias_apply;
733 MissingCX = CrossSections::NpiToMissingStrangeness(particle1,particle2)*bias_apply;
734 }
735
736
737 const G4double elasticCX = CrossSections::elastic(particle1, particle2)*counterweight;
738 const G4double deltaProductionCX = CrossSections::piNToDelta(particle1, particle2)*counterweight;
739 const G4double onePiProductionCX = CrossSections::piNToxPiN(2,particle1, particle2)*counterweight;
740 const G4double twoPiProductionCX = CrossSections::piNToxPiN(3,particle1, particle2)*counterweight;
741 const G4double threePiProductionCX = CrossSections::piNToxPiN(4,particle1, particle2)*counterweight;
742 const G4double etaProductionCX = CrossSections::piNToEtaN(particle1, particle2)*counterweight;
743 const G4double omegaProductionCX = CrossSections::piNToOmegaN(particle1, particle2)*counterweight;
744
745 const G4double totCX=CrossSections::total(particle1, particle2);
746
747 // assert(std::fabs(totCX-elasticCX-deltaProductionCX-onePiProductionCX-twoPiProductionCX-threePiProductionCX-etaProductionCX-omegaProductionCX-LKProdCX-SKProdCX-LKpiProdCX-SKpiProdCX-LK2piProdCX-SK2piProdCX-NKKbProdCX-MissingCX) < 0.15);
748
749 const G4double rChannel=Random::shoot() * totCX;
750
751 if(elasticCX > rChannel) {
752 isElastic = true;
753 // Elastic PiN channel
754 INCL_DEBUG("PiN interaction: elastic channel chosen" << '\n');
755 weight = counterweight;
756 return new PiNElasticChannel(particle1, particle2);
757 } else if(elasticCX + deltaProductionCX > rChannel) {
758 isElastic = false;
759 // PiN -> Delta channel is chosen
760 INCL_DEBUG("PiN interaction: Delta channel chosen" << '\n');
761 weight = counterweight;
762 return new PiNToDeltaChannel(particle1, particle2);
763 } else if(elasticCX + deltaProductionCX + onePiProductionCX > rChannel) {
764 isElastic = false;
765 // PiN -> PiNPi channel is chosen
766 INCL_DEBUG("PiN interaction: one Pion channel chosen" << '\n');
767 weight = counterweight;
768 return new PiNToMultiPionsChannel(2,particle1, particle2);
769 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX > rChannel) {
770 isElastic = false;
771 // PiN -> PiN2Pi channel is chosen
772 INCL_DEBUG("PiN interaction: two Pions channel chosen" << '\n');
773 weight = counterweight;
774 return new PiNToMultiPionsChannel(3,particle1, particle2);
775 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX > rChannel) {
776 isElastic = false;
777 // PiN -> PiN3Pi channel is chosen
778 INCL_DEBUG("PiN interaction: three Pions channel chosen" << '\n');
779 weight = counterweight;
780 return new PiNToMultiPionsChannel(4,particle1, particle2);
781 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX > rChannel) {
782 isElastic = false;
783 // PiN -> EtaN channel is chosen
784 INCL_DEBUG("PiN interaction: Eta channel chosen" << '\n');
785 weight = counterweight;
786 return new PiNToEtaChannel(particle1, particle2);
787 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX > rChannel) {
788 isElastic = false;
789 // PiN -> OmegaN channel is chosen
790 INCL_DEBUG("PiN interaction: Omega channel chosen" << '\n');
791 weight = counterweight;
792 return new PiNToOmegaChannel(particle1, particle2);
793 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
794 + LKProdCX > rChannel) {
795 isElastic = false;
796 isStrangeProduction = true;
797 // PiN -> LK channel is chosen
798 INCL_DEBUG("PiN interaction: LK channel chosen" << '\n');
799 weight = bias_apply;
800 return new NpiToLKChannel(particle1, particle2);
801 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
802 + LKProdCX + SKProdCX > rChannel) {
803 isElastic = false;
804 isStrangeProduction = true;
805 // PiN -> SK channel is chosen
806 INCL_DEBUG("PiN interaction: SK channel chosen" << '\n');
807 weight = bias_apply;
808 return new NpiToSKChannel(particle1, particle2);
809 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
810 + LKProdCX + SKProdCX + LKpiProdCX > rChannel) {
811 isElastic = false;
812 isStrangeProduction = true;
813 // PiN -> LKpi channel is chosen
814 INCL_DEBUG("PiN interaction: LKpi channel chosen" << '\n');
815 weight = bias_apply;
816 return new NpiToLKpiChannel(particle1, particle2);
817 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
818 + LKProdCX + SKProdCX + LKpiProdCX + SKpiProdCX > rChannel) {
819 isElastic = false;
820 isStrangeProduction = true;
821 // PiN -> SKpi channel is chosen
822 INCL_DEBUG("PiN interaction: SKpi channel chosen" << '\n');
823 weight = bias_apply;
824 return new NpiToSKpiChannel(particle1, particle2);
825 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
826 + LKProdCX + SKProdCX + LKpiProdCX + SKpiProdCX + LK2piProdCX > rChannel) {
827 isElastic = false;
828 isStrangeProduction = true;
829 // PiN -> LK2pi channel is chosen
830 INCL_DEBUG("PiN interaction: LK2pi channel chosen" << '\n');
831 weight = bias_apply;
832 return new NpiToLK2piChannel(particle1, particle2);
833 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
834 + LKProdCX + SKProdCX + LKpiProdCX + SKpiProdCX + LK2piProdCX + SK2piProdCX > rChannel) {
835 isElastic = false;
836 isStrangeProduction = true;
837 // PiN -> SK2pi channel is chosen
838 INCL_DEBUG("PiN interaction: SK2pi channel chosen" << '\n');
839 weight = bias_apply;
840 return new NpiToSK2piChannel(particle1, particle2);
841 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
842 + LKProdCX + SKProdCX + LKpiProdCX + SKpiProdCX + LK2piProdCX + SK2piProdCX + NKKbProdCX > rChannel) {
843 isElastic = false;
844 isStrangeProduction = true;
845 // PiN -> NKKb channel is chosen
846 INCL_DEBUG("PiN interaction: NKKb channel chosen" << '\n');
847 weight = bias_apply;
848 return new NpiToNKKbChannel(particle1, particle2);
849 } else if(elasticCX + deltaProductionCX + onePiProductionCX + twoPiProductionCX + threePiProductionCX + etaProductionCX+ omegaProductionCX
850 + LKProdCX + SKProdCX + LKpiProdCX + SKpiProdCX + LK2piProdCX + SK2piProdCX + NKKbProdCX + MissingCX> rChannel) {
851 isElastic = false;
852 isStrangeProduction = true;
853 // PiN -> Missinge Strangeness channel is chosen
854 INCL_DEBUG("PiN interaction: Missinge Strangeness channel chosen" << '\n');
855 weight = bias_apply;
856 return new NpiToMissingStrangenessChannel(particle1, particle2);
857 }
858 else {
859 INCL_WARN("inconsistency within the PiN Cross Sections (sum!=inelastic)" << '\n');
860 if(MissingCX>0.) {
861 INCL_WARN("Returning a Missinge Strangeness channel" << '\n');
862 weight = bias_apply;
863 isElastic = false;
864 isStrangeProduction = true;
865 return new NpiToMissingStrangenessChannel(particle1, particle2);
866 } else if(NKKbProdCX>0.) {
867 INCL_WARN("Returning a NKKb channel" << '\n');
868 weight = bias_apply;
869 isElastic = false;
870 isStrangeProduction = true;
871 return new NpiToNKKbChannel(particle1, particle2);
872 } else if(SK2piProdCX>0.) {
873 INCL_WARN("Returning a SK2pi channel" << '\n');
874 weight = bias_apply;
875 isElastic = false;
876 isStrangeProduction = true;
877 return new NpiToSK2piChannel(particle1, particle2);
878 } else if(LK2piProdCX>0.) {
879 INCL_WARN("Returning a LK2pi channel" << '\n');
880 weight = bias_apply;
881 isElastic = false;
882 isStrangeProduction = true;
883 return new NpiToLK2piChannel(particle1, particle2);
884 } else if(SKpiProdCX>0.) {
885 INCL_WARN("Returning a SKpi channel" << '\n');
886 weight = bias_apply;
887 isElastic = false;
888 isStrangeProduction = true;
889 return new NpiToSKpiChannel(particle1, particle2);
890 } else if(LKpiProdCX>0.) {
891 INCL_WARN("Returning a LKpi channel" << '\n');
892 weight = bias_apply;
893 isElastic = false;
894 isStrangeProduction = true;
895 return new NpiToLKpiChannel(particle1, particle2);
896 } else if(SKProdCX>0.) {
897 INCL_WARN("Returning a SK channel" << '\n');
898 weight = bias_apply;
899 isElastic = false;
900 isStrangeProduction = true;
901 return new NpiToSKChannel(particle1, particle2);
902 } else if(LKProdCX>0.) {
903 INCL_WARN("Returning a LK channel" << '\n');
904 weight = bias_apply;
905 isElastic = false;
906 isStrangeProduction = true;
907 return new NpiToLKChannel(particle1, particle2);
908 } else if(omegaProductionCX>0.) {
909 INCL_WARN("Returning a Omega channel" << '\n');
910 weight = counterweight;
911 isElastic = false;
912 return new PiNToOmegaChannel(particle1, particle2);
913 } else if(etaProductionCX>0.) {
914 INCL_WARN("Returning a Eta channel" << '\n');
915 weight = counterweight;
916 isElastic = false;
917 return new PiNToEtaChannel(particle1, particle2);
918 } else if(threePiProductionCX>0.) {
919 INCL_WARN("Returning a 3pi channel" << '\n');
920 weight = counterweight;
921 isElastic = false;
922 return new PiNToMultiPionsChannel(4,particle1, particle2);
923 } else if(twoPiProductionCX>0.) {
924 INCL_WARN("Returning a 2pi channel" << '\n');
925 weight = counterweight;
926 isElastic = false;
927 return new PiNToMultiPionsChannel(3,particle1, particle2);
928 } else if(onePiProductionCX>0.) {
929 INCL_WARN("Returning a 1pi channel" << '\n');
930 weight = counterweight;
931 isElastic = false;
932 return new PiNToMultiPionsChannel(2,particle1, particle2);
933 } else if(deltaProductionCX>0.) {
934 INCL_WARN("Returning a delta-production channel" << '\n');
935 weight = counterweight;
936 isElastic = false;
937 return new PiNToDeltaChannel(particle1, particle2);
938 } else {
939 INCL_WARN("Returning an elastic channel" << '\n');
940 weight = counterweight;
941 isElastic = true;
942 return new PiNElasticChannel(particle1, particle2);
943 }
944 }
945 } else if ((particle1->isNucleon() && particle2->isEta()) || (particle2->isNucleon() && particle1->isEta())) {
946 //// EtaN
947
948 const G4double elasticCX = CrossSections::elastic(particle1, particle2);
949 const G4double onePiProductionCX = CrossSections::etaNToPiN(particle1, particle2);
950 const G4double twoPiProductionCX = CrossSections::etaNToPiPiN(particle1, particle2);
951 const G4double totCX=CrossSections::total(particle1, particle2);
952 // assert(std::fabs(totCX-elasticCX-onePiProductionCX-twoPiProductionCX)<1.);
953
954 const G4double rChannel=Random::shoot() * totCX;
955
956 if(elasticCX > rChannel) {
957 // Elastic EtaN channel
958 isElastic = true;
959 INCL_DEBUG("EtaN interaction: elastic channel chosen" << '\n');
960 return new EtaNElasticChannel(particle1, particle2);
961 } else if(elasticCX + onePiProductionCX > rChannel) {
962 isElastic = false;
963 // EtaN -> EtaPiN channel is chosen
964 INCL_DEBUG("EtaN interaction: PiN channel chosen" << '\n');
965 return new EtaNToPiNChannel(particle1, particle2);
966 } else if(elasticCX + onePiProductionCX + twoPiProductionCX > rChannel) {
967 isElastic = false;
968 // EtaN -> EtaPiPiN channel is chosen
969 INCL_DEBUG("EtaN interaction: PiPiN channel chosen" << '\n');
970 return new EtaNToPiPiNChannel(particle1, particle2);
971 }
972
973 else {
974 INCL_WARN("inconsistency within the EtaN Cross Sections (sum!=inelastic)" << '\n');
975 if(twoPiProductionCX>0.) {
976 INCL_WARN("Returning a PiPiN channel" << '\n');
977 isElastic = false;
978 return new EtaNToPiPiNChannel(particle1, particle2);
979 } else if(onePiProductionCX>0.) {
980 INCL_WARN("Returning a PiN channel" << '\n');
981 isElastic = false;
982 return new EtaNToPiNChannel(particle1, particle2);
983 } else {
984 INCL_WARN("Returning an elastic channel" << '\n');
985 isElastic = true;
986 return new EtaNElasticChannel(particle1, particle2);
987 }
988 }
989
990 } else if ((particle1->isNucleon() && particle2->isOmega()) || (particle2->isNucleon() && particle1->isOmega())) {
991 //// OmegaN
992
993 const G4double elasticCX = CrossSections::elastic(particle1, particle2);
994 const G4double onePiProductionCX = CrossSections::omegaNToPiN(particle1, particle2);
995 const G4double twoPiProductionCX = CrossSections::omegaNToPiPiN(particle1, particle2);
996 const G4double totCX=CrossSections::total(particle1, particle2);
997 // assert(std::fabs(totCX-elasticCX-onePiProductionCX-twoPiProductionCX)<1.);
998
999 const G4double rChannel=Random::shoot() * totCX;
1000
1001 if(elasticCX > rChannel) {
1002 // Elastic OmegaN channel
1003 isElastic = true;
1004 INCL_DEBUG("OmegaN interaction: elastic channel chosen" << '\n');
1005 return new OmegaNElasticChannel(particle1, particle2);
1006 } else if(elasticCX + onePiProductionCX > rChannel) {
1007 isElastic = false;
1008 // OmegaN -> PiN channel is chosen
1009 INCL_DEBUG("OmegaN interaction: PiN channel chosen" << '\n');
1010 return new OmegaNToPiNChannel(particle1, particle2);
1011 } else if(elasticCX + onePiProductionCX + twoPiProductionCX > rChannel) {
1012 isElastic = false;
1013 // OmegaN -> PiPiN channel is chosen
1014 INCL_DEBUG("OmegaN interaction: PiPiN channel chosen" << '\n');
1015 return new OmegaNToPiPiNChannel(particle1, particle2);
1016 }
1017 else {
1018 INCL_WARN("inconsistency within the OmegaN Cross Sections (sum!=inelastic)" << '\n');
1019 if(twoPiProductionCX>0.) {
1020 INCL_WARN("Returning a PiPiN channel" << '\n');
1021 isElastic = false;
1022 return new OmegaNToPiPiNChannel(particle1, particle2);
1023 } else if(onePiProductionCX>0.) {
1024 INCL_WARN("Returning a PiN channel" << '\n');
1025 isElastic = false;
1026 return new OmegaNToPiNChannel(particle1, particle2);
1027 } else {
1028 INCL_WARN("Returning an elastic channel" << '\n');
1029 isElastic = true;
1030 return new OmegaNElasticChannel(particle1, particle2);
1031 }
1032 }
1033 } else if ((particle1->isNucleon() && particle2->isKaon()) || (particle2->isNucleon() && particle1->isKaon())) {
1034 //// KN
1035 const G4double elasticCX = CrossSections::elastic(particle1,particle2);
1036 const G4double quasielasticCX = CrossSections::NKToNK(particle1,particle2);
1037 const G4double NKToNKpiCX = CrossSections::NKToNKpi(particle1,particle2);
1038 const G4double NKToNK2piCX = CrossSections::NKToNK2pi(particle1,particle2);
1039 const G4double totCX=CrossSections::total(particle1, particle2);
1040 // assert(std::fabs(totCX-elasticCX-quasielasticCX-NKToNKpiCX-NKToNK2piCX)<0.1);
1041
1042 const G4double rChannel=Random::shoot() * totCX;
1043 if(elasticCX > rChannel){
1044 // Elastic KN channel is chosen
1045 isElastic = true;
1046 INCL_DEBUG("KN interaction: elastic channel chosen" << '\n');
1047 return new NKElasticChannel(particle1, particle2);
1048 } else if(elasticCX + quasielasticCX > rChannel){
1049 // Quasi-elastic KN channel is chosen
1050 isElastic = false; // true ??
1051 INCL_DEBUG("KN interaction: quasi-elastic channel chosen" << '\n');
1052 return new NKToNKChannel(particle1, particle2);
1053 } else if(elasticCX + quasielasticCX + NKToNKpiCX > rChannel){
1054 // KN -> NKpi channel is chosen
1055 isElastic = false;
1056 INCL_DEBUG("KN interaction: NKpi channel chosen" << '\n');
1057 return new NKToNKpiChannel(particle1, particle2);
1058 } else if(elasticCX + quasielasticCX + NKToNKpiCX + NKToNK2piCX > rChannel){
1059 // KN -> NK2pi channel is chosen
1060 isElastic = false;
1061 INCL_DEBUG("KN interaction: NK2pi channel chosen" << '\n');
1062 return new NKToNK2piChannel(particle1, particle2);
1063 } else {
1064 INCL_WARN("inconsistency within the KN Cross Sections (sum!=inelastic)" << '\n');
1065 if(NKToNK2piCX>0.) {
1066 INCL_WARN("Returning a NKToNK2pi channel" << '\n');
1067 isElastic = false;
1068 return new NKToNK2piChannel(particle1, particle2);
1069 } else if(NKToNKpiCX>0.) {
1070 INCL_WARN("Returning a NKToNKpi channel" << '\n');
1071 isElastic = false;
1072 return new NKToNKpiChannel(particle1, particle2);
1073 } else if(quasielasticCX>0.) {
1074 INCL_WARN("Returning a quasi-elastic channel" << '\n');
1075 isElastic = false; // true ??
1076 return new NKToNKChannel(particle1, particle2);
1077 } else {
1078 INCL_WARN("Returning an elastic channel" << '\n');
1079 isElastic = true;
1080 return new NKElasticChannel(particle1, particle2);
1081 }
1082 }
1083 } else if ((particle1->isNucleon() && particle2->isAntiKaon()) || (particle2->isNucleon() && particle1->isAntiKaon())) {
1084 //// KbN
1085 const G4double elasticCX = CrossSections::elastic(particle1,particle2);
1086 const G4double quasielasticCX = CrossSections::NKbToNKb(particle1,particle2);
1087 const G4double NKbToNKbpiCX = CrossSections::NKbToNKbpi(particle1,particle2);
1088 const G4double NKbToNKb2piCX = CrossSections::NKbToNKb2pi(particle1,particle2);
1089 const G4double NKbToLpiCX = CrossSections::NKbToLpi(particle1,particle2);
1090 const G4double NKbToL2piCX = CrossSections::NKbToL2pi(particle1,particle2);
1091 const G4double NKbToSpiCX = CrossSections::NKbToSpi(particle1,particle2);
1092 const G4double NKbToS2piCX = CrossSections::NKbToS2pi(particle1,particle2);
1093 const G4double totCX=CrossSections::total(particle1, particle2);
1094 // assert(std::fabs(totCX-elasticCX-quasielasticCX-NKbToNKbpiCX-NKbToNKb2piCX-NKbToLpiCX-NKbToL2piCX-NKbToSpiCX-NKbToS2piCX)<0.1);
1095
1096 const G4double rChannel=Random::shoot() * totCX;
1097 if(elasticCX > rChannel){
1098 // Elastic KbN channel is chosen
1099 isElastic = true;
1100 INCL_DEBUG("KbN interaction: elastic channel chosen" << '\n');
1101 return new NKbElasticChannel(particle1, particle2);
1102 } else if(elasticCX + quasielasticCX > rChannel){
1103 // Quasi-elastic KbN channel is chosen
1104 isElastic = false; // true ??
1105 INCL_DEBUG("KbN interaction: quasi-elastic channel chosen" << '\n');
1106 return new NKbToNKbChannel(particle1, particle2);
1107 } else if(elasticCX + quasielasticCX + NKbToNKbpiCX > rChannel){
1108 // KbN -> NKbpi channel is chosen
1109 isElastic = false;
1110 INCL_DEBUG("KbN interaction: NKbpi channel chosen" << '\n');
1111 return new NKbToNKbpiChannel(particle1, particle2);
1112 } else if(elasticCX + quasielasticCX + NKbToNKbpiCX + NKbToNKb2piCX > rChannel){
1113 // KbN -> NKb2pi channel is chosen
1114 isElastic = false;
1115 INCL_DEBUG("KbN interaction: NKb2pi channel chosen" << '\n');
1116 return new NKbToNKb2piChannel(particle1, particle2);
1117 } else if(elasticCX + quasielasticCX + NKbToNKbpiCX + NKbToNKb2piCX + NKbToLpiCX > rChannel){
1118 // KbN -> Lpi channel is chosen
1119 isElastic = false;
1120 INCL_DEBUG("KbN interaction: Lpi channel chosen" << '\n');
1121 return new NKbToLpiChannel(particle1, particle2);
1122 } else if(elasticCX + quasielasticCX + NKbToNKbpiCX + NKbToNKb2piCX + NKbToLpiCX + NKbToL2piCX > rChannel){
1123 // KbN -> L2pi channel is chosen
1124 isElastic = false;
1125 INCL_DEBUG("KbN interaction: L2pi channel chosen" << '\n');
1126 return new NKbToL2piChannel(particle1, particle2);
1127 } else if(elasticCX + quasielasticCX + NKbToNKbpiCX + NKbToNKb2piCX + NKbToLpiCX + NKbToL2piCX + NKbToSpiCX > rChannel){
1128 // KbN -> Spi channel is chosen
1129 isElastic = false;
1130 INCL_DEBUG("KbN interaction: Spi channel chosen" << '\n');
1131 return new NKbToSpiChannel(particle1, particle2);
1132 } else if(elasticCX + quasielasticCX + NKbToNKbpiCX + NKbToNKb2piCX + NKbToLpiCX + NKbToL2piCX + NKbToSpiCX + NKbToS2piCX > rChannel){
1133 // KbN -> S2pi channel is chosen
1134 isElastic = false;
1135 INCL_DEBUG("KbN interaction: S2pi channel chosen" << '\n');
1136 return new NKbToS2piChannel(particle1, particle2);
1137 } else {
1138 INCL_WARN("inconsistency within the KbN Cross Sections (sum!=inelastic)" << '\n');
1139 if(NKbToS2piCX>0.) {
1140 INCL_WARN("Returning a NKbToS2pi channel" << '\n');
1141 isElastic = false;
1142 return new NKbToS2piChannel(particle1, particle2);
1143 } else if(NKbToSpiCX>0.) {
1144 INCL_WARN("Returning a NKbToSpi channel" << '\n');
1145 isElastic = false;
1146 return new NKbToSpiChannel(particle1, particle2);
1147 } else if(NKbToL2piCX>0.) {
1148 INCL_WARN("Returning a NKbToL2pi channel" << '\n');
1149 isElastic = false;
1150 return new NKbToL2piChannel(particle1, particle2);
1151 } else if(NKbToLpiCX>0.) {
1152 INCL_WARN("Returning a NKbToLpi channel" << '\n');
1153 isElastic = false;
1154 return new NKbToLpiChannel(particle1, particle2);
1155 } else if(NKbToNKb2piCX>0.) {
1156 INCL_WARN("Returning a NKbToNKb2pi channel" << '\n');
1157 isElastic = false;
1158 return new NKbToNKb2piChannel(particle1, particle2);
1159 } else if(NKbToNKbpiCX>0.) {
1160 INCL_WARN("Returning a NKbToNKbpi channel" << '\n');
1161 isElastic = false;
1162 return new NKbToNKbpiChannel(particle1, particle2);
1163 } else if(quasielasticCX>0.) {
1164 INCL_WARN("Returning a quasi-elastic channel" << '\n');
1165 isElastic = false; // true ??
1166 return new NKbToNKbChannel(particle1, particle2);
1167 } else {
1168 INCL_WARN("Returning an elastic channel" << '\n');
1169 isElastic = true;
1170 return new NKbElasticChannel(particle1, particle2);
1171 }
1172 }
1173 } else if ((particle1->isNucleon() && particle2->isLambda()) || (particle2->isNucleon() && particle1->isLambda())) {
1174 //// NLambda
1175 const G4double elasticCX = CrossSections::elastic(particle1,particle2);
1176 const G4double NLToNSCX = CrossSections::NLToNS(particle1,particle2);
1177 const G4double totCX=CrossSections::total(particle1, particle2);
1178 // assert(std::fabs(totCX-elasticCX-NLToNSCX)<0.1);
1179
1180 const G4double rChannel=Random::shoot() * totCX;
1181 if(elasticCX > rChannel){
1182 // Elastic NLambda channel is chosen
1183 isElastic = true;
1184 INCL_DEBUG("NLambda interaction: elastic channel chosen" << '\n');
1185 return new NYElasticChannel(particle1, particle2);
1186 } else if(elasticCX + NLToNSCX > rChannel){
1187 // Quasi-elastic NLambda channel is chosen
1188 isElastic = false; // true ??
1189 INCL_DEBUG("NLambda interaction: quasi-elastic channel chosen" << '\n');
1190 return new NLToNSChannel(particle1, particle2);
1191 } else {
1192 INCL_WARN("inconsistency within the NLambda Cross Sections (sum!=inelastic)" << '\n');
1193 if(NLToNSCX>0.) {
1194 INCL_WARN("Returning a quasi-elastic channel" << '\n');
1195 isElastic = false; // true ??
1196 return new NLToNSChannel(particle1, particle2);
1197 } else {
1198 INCL_WARN("Returning an elastic channel" << '\n');
1199 isElastic = true;
1200 return new NYElasticChannel(particle1, particle2);
1201 }
1202 }
1203 } else if ((particle1->isNucleon() && particle2->isSigma()) || (particle2->isNucleon() && particle1->isSigma())) {
1204 //// NSigma
1205 const G4double elasticCX = CrossSections::elastic(particle1,particle2);
1206 const G4double NSToNLCX = CrossSections::NSToNL(particle1,particle2);
1207 const G4double NSToNSCX = CrossSections::NSToNS(particle1,particle2);
1208 const G4double totCX=CrossSections::total(particle1, particle2);
1209 // assert(std::fabs(totCX-elasticCX-NSToNLCX-NSToNSCX)<0.1);
1210
1211 const G4double rChannel=Random::shoot() * totCX;
1212 if(elasticCX > rChannel){
1213 // Elastic NSigma channel is chosen
1214 isElastic = true;
1215 INCL_DEBUG("NSigma interaction: elastic channel chosen" << '\n');
1216 return new NYElasticChannel(particle1, particle2);
1217 } else if(elasticCX + NSToNLCX > rChannel){
1218 // NSigma -> NLambda channel is chosen
1219 isElastic = false; // true ??
1220 INCL_DEBUG("NSigma interaction: NLambda channel chosen" << '\n');
1221 return new NSToNLChannel(particle1, particle2);
1222 } else if(elasticCX + NSToNLCX + NSToNSCX > rChannel){
1223 // NSigma -> NSigma quasi-elastic channel is chosen
1224 isElastic = false; // true ??
1225 INCL_DEBUG("NSigma interaction: NSigma quasi-elastic channel chosen" << '\n');
1226 return new NSToNSChannel(particle1, particle2);
1227 } else {
1228 INCL_WARN("inconsistency within the NSigma Cross Sections (sum!=inelastic)" << '\n');
1229 if(NSToNSCX>0.) {
1230 INCL_WARN("Returning a quasi-elastic channel" << '\n');
1231 isElastic = false; // true ??
1232 return new NSToNSChannel(particle1, particle2);
1233 } else if(NSToNLCX>0.) {
1234 INCL_WARN("Returning a NLambda channel" << '\n');
1235 isElastic = false; // true ??
1236 return new NSToNLChannel(particle1, particle2);
1237 } else {
1238 INCL_WARN("Returning an elastic channel" << '\n');
1239 isElastic = true;
1240 return new NYElasticChannel(particle1, particle2);
1241 }
1242 }
1243 } else if ((particle1->isNucleon() && particle2->isAntiNucleon()) || (particle2->isNucleon() && particle1->isAntiNucleon())) {
1244 //// NNbar
1245 const G4double totCX = CrossSections::total(particle1, particle2);
1246 const G4double NNbElasticCX = CrossSections::NNbarElastic(particle1,particle2);
1247 const G4double NNbCEXCX = CrossSections::NNbarCEX(particle1,particle2);
1248 const G4double NNbToLLbCX = CrossSections::NNbarToLLbar(particle1,particle2);
1249 const G4double NNbToNNbpiCX = CrossSections::NNbarToNNbarpi(particle1,particle2);
1250 const G4double NNbToNNb2piCX = CrossSections::NNbarToNNbar2pi(particle1,particle2);
1251 const G4double NNbToNNb3piCX = CrossSections::NNbarToNNbar3pi(particle1,particle2);
1252 const G4double AnnihilationCX = CrossSections::NNbarToAnnihilation(particle1, particle2);
1253
1254 // assert(std::fabs(totCX-NNbElasticCX-NNbCEXCX-NNbToLLbCX-NNbToNNbpiCX-NNbToNNb2piCX-NNbToNNb3piCX-AnnihilationCX)<0.1);
1255
1256 const G4double rChannel=Random::shoot() * totCX;
1257 if (NNbElasticCX > rChannel) {
1258 // NNbar (elastic) channel is chosen
1259 isElastic = true;
1260 //INCL_WARN("NNbar interaction: NNbarElastic channel chosen" << '\n');
1261 return new NNbarElasticChannel(particle1, particle2);
1262 } else if (NNbElasticCX + NNbCEXCX > rChannel) {
1263 // NNbar (CEX) channel is chosen
1264 isElastic = false; // may be charge-exchange also
1265 //INCL_WARN("NNbar interaction: NNbarCEX channel chosen" << '\n');
1266 return new NNbarCEXChannel(particle1, particle2);
1267 } else if (NNbElasticCX + NNbCEXCX + NNbToLLbCX > rChannel) {
1268 // NNbarToLLbar channel is chosen
1269 isElastic = false; // may be charge-exchange also
1270 //INCL_WARN("NNbar interaction: NNbarToLLbar channel chosen" << '\n');
1271 return new NNbarToLLbarChannel(particle1, particle2);
1272 } else if (NNbElasticCX + NNbCEXCX + NNbToLLbCX + NNbToNNbpiCX > rChannel) {
1273 // NNbar to NNbar pi channel is chosen
1274 isElastic = false;
1275 //INCL_WARN("NNbar interaction: NNbar pi channel chosen" << '\n');
1276 return new NNbarToNNbarpiChannel(particle1, particle2);
1277 } else if (NNbElasticCX + NNbCEXCX + NNbToLLbCX + NNbToNNbpiCX + NNbToNNb2piCX > rChannel) {
1278 // NNbar to NNbar 2pi channel is chosen
1279 isElastic = false;
1280 //INCL_WARN("NNbar interaction: NNbar 2pi channel chosen" << '\n');
1281 return new NNbarToNNbar2piChannel(particle1, particle2);
1282 } else if (NNbElasticCX + NNbCEXCX + NNbToLLbCX + NNbToNNbpiCX + NNbToNNb2piCX + NNbToNNb3piCX > rChannel) {
1283 // NNbar to NNbar 3pi channel is chosen
1284 isElastic = false;
1285 //INCL_WARN("NNbar interaction: NNbar 3pi channel chosen" << '\n');
1286 return new NNbarToNNbar3piChannel(particle1, particle2);
1287 } else if (NNbElasticCX + NNbCEXCX + NNbToLLbCX + NNbToNNbpiCX + NNbToNNb2piCX + NNbToNNb3piCX +AnnihilationCX > rChannel){
1288 // NNbar annihilation channel is chosen
1289 isElastic = false;
1290 AnnihilationType atype;
1291 if((particle1->getType()==antiProton && particle2->getType()==Proton) || (particle2->getType()==antiProton && particle1->getType()==Proton)){
1292 atype = PTypeInFlight;
1293 }
1294 else if((particle1->getType()==antiProton && particle2->getType()==Neutron) || (particle2->getType()==antiProton && particle1->getType()==Neutron)){
1295 atype = NTypeInFlight;
1296 }
1297 else if((particle1->getType()==antiNeutron && particle2->getType()==Proton) || (particle2->getType()==antiNeutron && particle1->getType()==Proton)){
1298 atype = NbarPTypeInFlight;
1299 }
1300 else if((particle1->getType()==antiNeutron && particle2->getType()==Neutron) || (particle2->getType()==antiNeutron && particle1->getType()==Neutron)){
1301 atype = NbarNTypeInFlight;
1302 }
1303 else{
1304 atype = Def;
1305 INCL_ERROR("Annihilation type problem " << '\n');
1306 }
1307 theNucleus->setAType(atype);
1308 return new NNbarToAnnihilationChannel(theNucleus, particle1, particle2);
1309 } else {
1310 INCL_WARN("Inconsistency within the NNbar Cross Sections (sum != inelastic)" << '\n');
1311 if (NNbToNNb3piCX > 0.0) {
1312 INCL_WARN("Returning an NNbar 3pi channel" << '\n');
1313 isElastic = false;
1314 return new NNbarToNNbar3piChannel(particle1, particle2);
1315 } else if (NNbToNNb2piCX > 0.0) {
1316 INCL_WARN("Returning an NNbar 2pi channel" << '\n');
1317 isElastic = false;
1318 return new NNbarToNNbar2piChannel(particle1, particle2);
1319 } else if (NNbToNNbpiCX > 0.0) {
1320 INCL_WARN("Returning an NNbar pi channel" << '\n');
1321 isElastic = false;
1322 return new NNbarToNNbarpiChannel(particle1, particle2);
1323 } else if (AnnihilationCX > 0.0) {
1324 INCL_WARN("Returning an NNbar annihilation channel" << '\n');
1325 isElastic = false;
1326 AnnihilationType atype;
1327 if((particle1->getType()==antiProton && particle2->getType()==Proton) || (particle2->getType()==antiProton && particle1->getType()==Proton)){
1328 atype = PTypeInFlight;
1329 }
1330 else if((particle1->getType()==antiProton && particle2->getType()==Neutron) || (particle2->getType()==antiProton && particle1->getType()==Neutron)){
1331 atype = NTypeInFlight;
1332 }
1333 else if((particle1->getType()==antiNeutron && particle2->getType()==Proton) || (particle2->getType()==antiNeutron && particle1->getType()==Proton)){
1334 atype = NbarPTypeInFlight;
1335 }
1336 else if((particle1->getType()==antiNeutron && particle2->getType()==Neutron) || (particle2->getType()==antiNeutron && particle1->getType()==Neutron)){
1337 atype = NbarNTypeInFlight;
1338 }
1339 else{
1340 atype = Def;
1341 INCL_ERROR("Annihilation type problem " << '\n');
1342 }
1343 theNucleus->setAType(atype);
1344 return new NNbarToAnnihilationChannel(theNucleus, particle1, particle2);
1345 } else if (NNbCEXCX > 0.0) {
1346 INCL_WARN("Returning an NNbar CEX channel" << '\n');
1347 isElastic = false;
1348 return new NNbarCEXChannel(particle1, particle2);
1349 } else if (NNbToLLbCX > 0.0) {
1350 INCL_WARN("Returning an NNbar LLbar channel" << '\n');
1351 isElastic = false;
1352 return new NNbarToLLbarChannel(particle1, particle2);
1353 } else {
1354 INCL_WARN("Elastic NNbar channel chosen" << '\n');
1355 isElastic = true;
1356 return new NNbarElasticChannel(particle1, particle2);
1357 }
1358 }
1359 }
1360
1361 else {
1362 INCL_DEBUG("BinaryCollisionAvatar can only handle nucleons (for the moment)."
1363 << '\n'
1364 << particle1->print()
1365 << '\n'
1366 << particle2->print()
1367 << '\n');
1368 InteractionAvatar::restoreParticles();
1369 return NULL;
1370 }
1371 }
1372
1373 void BinaryCollisionAvatar::preInteraction() {
1374 isParticle1Spectator = particle1->isTargetSpectator();
1375 isParticle2Spectator = particle2->isTargetSpectator();
1376 InteractionAvatar::preInteraction();
1377 }
1378
1379 void BinaryCollisionAvatar::postInteraction(FinalState *fs) {
1380 // Call the postInteraction method of the parent class
1381 // (provides Pauli blocking and enforces energy conservation)
1382 InteractionAvatar::postInteraction(fs);
1383
1384 switch(fs->getValidity()) {
1385 case PauliBlockedFS:
1386 theNucleus->getStore()->getBook().incrementBlockedCollisions();
1387 break;
1388 case NoEnergyConservationFS:
1389 case ParticleBelowFermiFS:
1390 case ParticleBelowZeroFS:
1391 break;
1392 case ValidFS:
1393 Book &theBook = theNucleus->getStore()->getBook();
1394 theBook.incrementAcceptedCollisions();
1395
1396 if(theBook.getAcceptedCollisions() == 1) {
1397 // Store time and cross section of the first collision
1398 G4double t = theBook.getCurrentTime();
1399 theBook.setFirstCollisionTime(t);
1400 theBook.setFirstCollisionXSec(oldXSec);
1401 // Increase the number of Kaon by 1
1402 if(isStrangeProduction) theNucleus->setNumberOfKaon(theNucleus->getNumberOfKaon()+1);
1403 // Store position and momentum of the spectator on the first
1404 // collision
1405 if((isParticle1Spectator && isParticle2Spectator) || (!isParticle1Spectator && !isParticle2Spectator)) {
1406 INCL_ERROR("First collision must be within a target spectator and a non-target spectator");
1407 }
1408 if(isParticle1Spectator) {
1409 theBook.setFirstCollisionSpectatorPosition(backupParticle1->getPosition().mag());
1410 theBook.setFirstCollisionSpectatorMomentum(backupParticle1->getMomentum().mag());
1411 } else {
1412 theBook.setFirstCollisionSpectatorPosition(backupParticle2->getPosition().mag());
1413 theBook.setFirstCollisionSpectatorMomentum(backupParticle2->getMomentum().mag());
1414 }
1415
1416 // Store the elasticity of the first collision
1417 theBook.setFirstCollisionIsElastic(isElastic);
1418 }
1419 }
1420 return;
1421 }
1422
1423 std::string BinaryCollisionAvatar::dump() const {
1424 std::stringstream ss;
1425 ss << "(avatar " << theTime <<" 'nn-collision" << '\n'
1426 << "(list " << '\n'
1427 << particle1->dump()
1428 << particle2->dump()
1429 << "))" << '\n';
1430 return ss.str();
1431 }
1432
1433 }
1434