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25 // 25 //
26 // G4KL3DecayChannel class implementation <<
27 // 26 //
28 // Author: H.Kurashige, 30 May 1997 << 27 // $Id: G4KL3DecayChannel.cc 67971 2013-03-13 10:13:24Z gcosmo $
29 // ------------------------------------------- << 28 //
30 << 29 //
31 #include "G4KL3DecayChannel.hh" << 30 // ------------------------------------------------------------
>> 31 // GEANT 4 class header file
>> 32 //
>> 33 // History: first implementation, based on object model of
>> 34 // 30 May 1997 H.Kurashige
>> 35 // ------------------------------------------------------------
32 36
33 #include "G4DecayProducts.hh" <<
34 #include "G4LorentzRotation.hh" <<
35 #include "G4LorentzVector.hh" <<
36 #include "G4ParticleDefinition.hh" 37 #include "G4ParticleDefinition.hh"
37 #include "G4PhysicalConstants.hh" 38 #include "G4PhysicalConstants.hh"
38 #include "G4SystemOfUnits.hh" 39 #include "G4SystemOfUnits.hh"
>> 40 #include "G4DecayProducts.hh"
39 #include "G4VDecayChannel.hh" 41 #include "G4VDecayChannel.hh"
>> 42 #include "G4KL3DecayChannel.hh"
40 #include "Randomize.hh" 43 #include "Randomize.hh"
>> 44 #include "G4LorentzVector.hh"
>> 45 #include "G4LorentzRotation.hh"
41 46
42 G4KL3DecayChannel::G4KL3DecayChannel(const G4S << 47 G4KL3DecayChannel::G4KL3DecayChannel()
43 const G4S << 48 :G4VDecayChannel(),
44 const G4S << 49 massK(0.0), pLambda(0.0), pXi0(0.0)
45 : G4VDecayChannel("KL3 Decay", theParentName << 50 {
46 theNutrinoName) << 51 daughterM[idPi] = 0.0;
>> 52 daughterM[idLepton] = 0.0;
>> 53 daughterM[idNutrino] = 0.0;
>> 54 }
>> 55
>> 56
>> 57 G4KL3DecayChannel::G4KL3DecayChannel(
>> 58 const G4String& theParentName,
>> 59 G4double theBR,
>> 60 const G4String& thePionName,
>> 61 const G4String& theLeptonName,
>> 62 const G4String& theNutrinoName)
>> 63 :G4VDecayChannel("KL3 Decay",theParentName,
>> 64 theBR, 3,
>> 65 thePionName,theLeptonName,theNutrinoName)
47 { 66 {
48 static const G4String K_plus("kaon+"); 67 static const G4String K_plus("kaon+");
49 static const G4String K_minus("kaon-"); 68 static const G4String K_minus("kaon-");
50 static const G4String K_L("kaon0L"); 69 static const G4String K_L("kaon0L");
51 static const G4String Mu_plus("mu+"); 70 static const G4String Mu_plus("mu+");
52 static const G4String Mu_minus("mu-"); 71 static const G4String Mu_minus("mu-");
53 static const G4String E_plus("e+"); 72 static const G4String E_plus("e+");
54 static const G4String E_minus("e-"); 73 static const G4String E_minus("e-");
>> 74
>> 75 massK = 0.0;
>> 76 daughterM[idPi] = 0.0;
>> 77 daughterM[idLepton] = 0.0;
>> 78 daughterM[idNutrino] = 0.0;
55 79
56 // check modes 80 // check modes
57 if (((theParentName == K_plus) && (theLepton << 81 if ( ((theParentName == K_plus)&&(theLeptonName == E_plus)) ||
58 || ((theParentName == K_minus) && (theLe << 82 ((theParentName == K_minus)&&(theLeptonName == E_minus)) ) {
59 { <<
60 // K+- (Ke3) 83 // K+- (Ke3)
61 pLambda = 0.0286; 84 pLambda = 0.0286;
62 pXi0 = -0.35; << 85 pXi0 = -0.35;
63 } << 86 } else if ( ((theParentName == K_plus)&&(theLeptonName == Mu_plus)) ||
64 else if (((theParentName == K_plus) && (theL << 87 ((theParentName == K_minus)&&(theLeptonName == Mu_minus)) ) {
65 || ((theParentName == K_minus) && ( <<
66 { <<
67 // K+- (Kmu3) 88 // K+- (Kmu3)
68 pLambda = 0.033; 89 pLambda = 0.033;
69 pXi0 = -0.35; << 90 pXi0 = -0.35;
70 } << 91 } else if ( (theParentName == K_L) &&
71 else if ((theParentName == K_L) && ((theLept << 92 ((theLeptonName == E_plus) ||(theLeptonName == E_minus)) ){
72 // K0L (Ke3) 93 // K0L (Ke3)
73 pLambda = 0.0300; 94 pLambda = 0.0300;
74 pXi0 = -0.11; << 95 pXi0 = -0.11;
75 } << 96 } else if ( (theParentName == K_L) &&
76 else if ((theParentName == K_L) && ((theLept << 97 ((theLeptonName == Mu_plus) ||(theLeptonName == Mu_minus)) ){
77 // K0L (Kmu3) 98 // K0L (Kmu3)
78 pLambda = 0.034; 99 pLambda = 0.034;
79 pXi0 = -0.11; << 100 pXi0 = -0.11;
80 } << 101 } else {
81 else { <<
82 #ifdef G4VERBOSE 102 #ifdef G4VERBOSE
83 if (GetVerboseLevel() > 2) { << 103 if (GetVerboseLevel()>2) {
84 G4cout << "G4KL3DecayChannel:: construct 104 G4cout << "G4KL3DecayChannel:: constructor :";
85 G4cout << "illegal arguments " << G4endl << 105 G4cout << "illegal arguments " << G4endl;;
86 ; <<
87 DumpInfo(); 106 DumpInfo();
88 } 107 }
89 #endif 108 #endif
90 // set values for K0L (Ke3) temporarily 109 // set values for K0L (Ke3) temporarily
91 pLambda = 0.0300; 110 pLambda = 0.0300;
92 pXi0 = -0.11; << 111 pXi0 = -0.11;
93 } 112 }
94 } 113 }
95 114
96 G4KL3DecayChannel& G4KL3DecayChannel::operator << 115 G4KL3DecayChannel::~G4KL3DecayChannel()
>> 116 {
>> 117 }
>> 118
>> 119 G4KL3DecayChannel::G4KL3DecayChannel(const G4KL3DecayChannel &right):
>> 120 G4VDecayChannel(right),
>> 121 massK(right.massK),
>> 122 pLambda(right.pLambda),
>> 123 pXi0(right.pXi0)
97 { 124 {
98 if (this != &right) { << 125 daughterM[idPi] = right.daughterM[idPi];
>> 126 daughterM[idLepton] = right.daughterM[idLepton];
>> 127 daughterM[idNutrino] = right.daughterM[idNutrino];
>> 128 }
>> 129
>> 130 G4KL3DecayChannel & G4KL3DecayChannel::operator=(const G4KL3DecayChannel & right)
>> 131 {
>> 132 if (this != &right) {
99 kinematics_name = right.kinematics_name; 133 kinematics_name = right.kinematics_name;
100 verboseLevel = right.verboseLevel; 134 verboseLevel = right.verboseLevel;
101 rbranch = right.rbranch; 135 rbranch = right.rbranch;
102 136
103 // copy parent name 137 // copy parent name
104 parent_name = new G4String(*right.parent_n 138 parent_name = new G4String(*right.parent_name);
105 139
106 // clear daughters_name array 140 // clear daughters_name array
107 ClearDaughtersName(); 141 ClearDaughtersName();
108 142
109 // recreate array 143 // recreate array
110 numberOfDaughters = right.numberOfDaughter 144 numberOfDaughters = right.numberOfDaughters;
111 if (numberOfDaughters > 0) { << 145 if ( numberOfDaughters >0 ) {
112 if (daughters_name != nullptr) ClearDaug << 146 if (daughters_name !=0) ClearDaughtersName();
113 daughters_name = new G4String*[numberOfD 147 daughters_name = new G4String*[numberOfDaughters];
114 // copy daughters name << 148 //copy daughters name
115 for (G4int index = 0; index < numberOfDa << 149 for (G4int index=0; index < numberOfDaughters; index++) {
116 daughters_name[index] = new G4String(* << 150 daughters_name[index] = new G4String(*right.daughters_name[index]);
117 } 151 }
118 } 152 }
119 pLambda = right.pLambda; << 153 massK = right.massK;
>> 154 pLambda = right.pLambda;
120 pXi0 = right.pXi0; 155 pXi0 = right.pXi0;
>> 156 daughterM[idPi] = right.daughterM[idPi];
>> 157 daughterM[idLepton] = right.daughterM[idLepton];
>> 158 daughterM[idNutrino] = right.daughterM[idNutrino];
121 } 159 }
122 return *this; 160 return *this;
123 } 161 }
124 162
125 G4DecayProducts* G4KL3DecayChannel::DecayIt(G4 << 163
>> 164 G4DecayProducts* G4KL3DecayChannel::DecayIt(G4double)
126 { 165 {
127 // this version neglects muon polarization << 166 // this version neglects muon polarization
128 // assumes the pure V-A couplin 167 // assumes the pure V-A coupling
129 // gives incorrect energy spect << 168 // gives incorrect energy spectrum for Nutrinos
130 #ifdef G4VERBOSE 169 #ifdef G4VERBOSE
131 if (GetVerboseLevel() > 1) G4cout << "G4KL3D << 170 if (GetVerboseLevel()>1) G4cout << "G4KL3DecayChannel::DecayIt " << G4endl;
132 #endif 171 #endif
133 172
134 // fill parent particle and its mass 173 // fill parent particle and its mass
135 CheckAndFillParent(); << 174 if (G4MT_parent == 0) {
136 G4double massK = G4MT_parent->GetPDGMass(); << 175 FillParent();
>> 176 }
>> 177 massK = G4MT_parent->GetPDGMass();
137 178
138 // fill daughter particles and their mass 179 // fill daughter particles and their mass
139 CheckAndFillDaughters(); << 180 if (G4MT_daughters == 0) {
140 G4double daughterM[3]; << 181 FillDaughters();
>> 182 }
141 daughterM[idPi] = G4MT_daughters[idPi]->GetP 183 daughterM[idPi] = G4MT_daughters[idPi]->GetPDGMass();
142 daughterM[idLepton] = G4MT_daughters[idLepto 184 daughterM[idLepton] = G4MT_daughters[idLepton]->GetPDGMass();
143 daughterM[idNutrino] = G4MT_daughters[idNutr 185 daughterM[idNutrino] = G4MT_daughters[idNutrino]->GetPDGMass();
144 186
145 // determine momentum/energy of daughters ac << 187 // determine momentum/energy of daughters
>> 188 // according to DalitzDensity
146 G4double daughterP[3], daughterE[3]; 189 G4double daughterP[3], daughterE[3];
147 G4double w; 190 G4double w;
148 G4double r; 191 G4double r;
149 const size_t MAX_LOOP = 10000; << 192 do {
150 for (std::size_t loop_counter = 0; loop_coun <<
151 r = G4UniformRand(); 193 r = G4UniformRand();
152 PhaseSpace(massK, &daughterM[0], &daughter 194 PhaseSpace(massK, &daughterM[0], &daughterE[0], &daughterP[0]);
153 w = DalitzDensity(massK, daughterE[idPi], << 195 w = DalitzDensity(daughterE[idPi],daughterE[idLepton],daughterE[idNutrino]);
154 daughterM[idPi], daughte << 196 } while ( r > w);
155 if (r <= w) break; <<
156 } <<
157 197
158 // output message 198 // output message
159 #ifdef G4VERBOSE 199 #ifdef G4VERBOSE
160 if (GetVerboseLevel() > 1) { << 200 if (GetVerboseLevel()>1) {
161 G4cout << *daughters_name[0] << ":" << dau << 201 G4cout << *daughters_name[0] << ":" << daughterP[0]/GeV << "[GeV/c]" <<G4endl;
162 G4cout << *daughters_name[1] << ":" << dau << 202 G4cout << *daughters_name[1] << ":" << daughterP[1]/GeV << "[GeV/c]" <<G4endl;
163 G4cout << *daughters_name[2] << ":" << dau << 203 G4cout << *daughters_name[2] << ":" << daughterP[2]/GeV << "[GeV/c]" <<G4endl;
164 } 204 }
165 #endif 205 #endif
166 << 206 //create parent G4DynamicParticle at rest
167 // create parent G4DynamicParticle at rest << 207 G4ThreeVector* direction = new G4ThreeVector(1.0,0.0,0.0);
168 auto direction = new G4ThreeVector(1.0, 0.0, << 208 G4DynamicParticle * parentparticle = new G4DynamicParticle( G4MT_parent, *direction, 0.0);
169 auto parentparticle = new G4DynamicParticle( <<
170 delete direction; 209 delete direction;
171 210
172 // create G4Decayproducts << 211 //create G4Decayproducts
173 auto products = new G4DecayProducts(*parentp << 212 G4DecayProducts *products = new G4DecayProducts(*parentparticle);
174 delete parentparticle; 213 delete parentparticle;
175 214
176 // create daughter G4DynamicParticle << 215 //create daughter G4DynamicParticle
177 G4double costheta, sintheta, phi, sinphi, co << 216 G4double costheta, sintheta, phi, sinphi, cosphi;
178 G4double costhetan, sinthetan, phin, sinphin 217 G4double costhetan, sinthetan, phin, sinphin, cosphin;
179 << 218
180 // pion 219 // pion
181 costheta = 2. * G4UniformRand() - 1.0; << 220 costheta = 2.*G4UniformRand()-1.0;
182 sintheta = std::sqrt((1.0 - costheta) * (1.0 << 221 sintheta = std::sqrt((1.0-costheta)*(1.0+costheta));
183 phi = twopi * G4UniformRand() * rad; << 222 phi = twopi*G4UniformRand()*rad;
184 sinphi = std::sin(phi); 223 sinphi = std::sin(phi);
185 cosphi = std::cos(phi); 224 cosphi = std::cos(phi);
186 direction = new G4ThreeVector(sintheta * cos << 225 direction = new G4ThreeVector(sintheta*cosphi,sintheta*sinphi,costheta);
187 G4ThreeVector momentum0 = (*direction) * dau << 226 G4ThreeVector momentum0 = (*direction)*daughterP[0];
188 auto daughterparticle = new G4DynamicParticl << 227 G4DynamicParticle * daughterparticle
>> 228 = new G4DynamicParticle( G4MT_daughters[0], momentum0);
189 products->PushProducts(daughterparticle); 229 products->PushProducts(daughterparticle);
190 230
191 // neutrino 231 // neutrino
192 costhetan = << 232 costhetan = (daughterP[1]*daughterP[1]-daughterP[2]*daughterP[2]-daughterP[0]*daughterP[0])/(2.0*daughterP[2]*daughterP[0]);
193 (daughterP[1] * daughterP[1] - daughterP[2 << 233 sinthetan = std::sqrt((1.0-costhetan)*(1.0+costhetan));
194 / (2.0 * daughterP[2] * daughterP[0]); << 234 phin = twopi*G4UniformRand()*rad;
195 sinthetan = std::sqrt((1.0 - costhetan) * (1 <<
196 phin = twopi * G4UniformRand() * rad; <<
197 sinphin = std::sin(phin); 235 sinphin = std::sin(phin);
198 cosphin = std::cos(phin); 236 cosphin = std::cos(phin);
199 direction->setX(sinthetan * cosphin * costhe << 237 direction->setX( sinthetan*cosphin*costheta*cosphi - sinthetan*sinphin*sinphi + costhetan*sintheta*cosphi);
200 + costhetan * sintheta * cos << 238 direction->setY( sinthetan*cosphin*costheta*sinphi + sinthetan*sinphin*cosphi + costhetan*sintheta*sinphi);
201 direction->setY(sinthetan * cosphin * costhe << 239 direction->setZ( -sinthetan*cosphin*sintheta + costhetan*costheta);
202 + costhetan * sintheta * sin <<
203 direction->setZ(-sinthetan * cosphin * sinth <<
204 240
205 G4ThreeVector momentum2 = (*direction) * dau << 241 G4ThreeVector momentum2 = (*direction)*daughterP[2];
206 daughterparticle = new G4DynamicParticle(G4M << 242 daughterparticle = new G4DynamicParticle( G4MT_daughters[2], momentum2);
207 products->PushProducts(daughterparticle); 243 products->PushProducts(daughterparticle);
208 244
209 // lepton << 245 //lepton
210 G4ThreeVector momentum1 = (momentum0 + momen 246 G4ThreeVector momentum1 = (momentum0 + momentum2) * (-1.0);
211 daughterparticle = new G4DynamicParticle(G4M << 247 daughterparticle =
>> 248 new G4DynamicParticle( G4MT_daughters[1], momentum1);
212 products->PushProducts(daughterparticle); 249 products->PushProducts(daughterparticle);
213 250
214 #ifdef G4VERBOSE 251 #ifdef G4VERBOSE
215 if (GetVerboseLevel() > 1) { << 252 if (GetVerboseLevel()>1) {
216 G4cout << "G4KL3DecayChannel::DecayIt "; << 253 G4cout << "G4KL3DecayChannel::DecayIt ";
217 G4cout << " create decay products in rest << 254 G4cout << " create decay products in rest frame " <<G4endl;
218 G4cout << " decay products address=" << p << 255 G4cout << " decay products address=" << products << G4endl;
219 products->DumpInfo(); << 256 products->DumpInfo();
220 } 257 }
221 #endif 258 #endif
222 delete direction; 259 delete direction;
223 return products; 260 return products;
224 } 261 }
225 262
226 void G4KL3DecayChannel::PhaseSpace(G4double pa << 263 void G4KL3DecayChannel::PhaseSpace(G4double parentM,
>> 264 const G4double* M,
>> 265 G4double* E,
>> 266 G4double* P )
>> 267 // algorism of this code is originally written in GDECA3 of GEANT3
227 { 268 {
228 // Algorithm in this code was originally wri << 269
229 << 270 //sum of daughters'mass
230 // sum of daughters'mass <<
231 G4double sumofdaughtermass = 0.0; 271 G4double sumofdaughtermass = 0.0;
232 G4int index; 272 G4int index;
233 const G4int N_DAUGHTER = 3; << 273 for (index=0; index<3; index++){
234 <<
235 for (index = 0; index < N_DAUGHTER; ++index) <<
236 sumofdaughtermass += M[index]; 274 sumofdaughtermass += M[index];
237 } 275 }
238 276
239 // calculate daughter momentum. Generate two << 277 //calculate daughter momentum
>> 278 // Generate two
240 G4double rd1, rd2, rd; 279 G4double rd1, rd2, rd;
241 G4double momentummax = 0.0, momentumsum = 0. << 280 G4double momentummax=0.0, momentumsum = 0.0;
242 G4double energy; 281 G4double energy;
243 const size_t MAX_LOOP = 10000; << 282
244 for (std::size_t loop_counter = 0; loop_coun << 283 do {
245 rd1 = G4UniformRand(); 284 rd1 = G4UniformRand();
246 rd2 = G4UniformRand(); 285 rd2 = G4UniformRand();
247 if (rd2 > rd1) { 286 if (rd2 > rd1) {
248 rd = rd1; << 287 rd = rd1;
249 rd1 = rd2; 288 rd1 = rd2;
250 rd2 = rd; 289 rd2 = rd;
251 } << 290 }
252 momentummax = 0.0; 291 momentummax = 0.0;
253 momentumsum = 0.0; 292 momentumsum = 0.0;
254 // daughter 0 293 // daughter 0
255 energy = rd2 * (parentM - sumofdaughtermas << 294 energy = rd2*(parentM - sumofdaughtermass);
256 P[0] = std::sqrt(energy * energy + 2.0 * e << 295 P[0] = std::sqrt(energy*energy + 2.0*energy*M[0]);
257 E[0] = energy; 296 E[0] = energy;
258 if (P[0] > momentummax) momentummax = P[0] << 297 if ( P[0] >momentummax )momentummax = P[0];
259 momentumsum += P[0]; << 298 momentumsum += P[0];
260 // daughter 1 299 // daughter 1
261 energy = (1. - rd1) * (parentM - sumofdaug << 300 energy = (1.-rd1)*(parentM - sumofdaughtermass);
262 P[1] = std::sqrt(energy * energy + 2.0 * e << 301 P[1] = std::sqrt(energy*energy + 2.0*energy*M[1]);
263 E[1] = energy; 302 E[1] = energy;
264 if (P[1] > momentummax) momentummax = P[1] << 303 if ( P[1] >momentummax )momentummax = P[1];
265 momentumsum += P[1]; << 304 momentumsum += P[1];
266 // daughter 2 305 // daughter 2
267 energy = (rd1 - rd2) * (parentM - sumofdau << 306 energy = (rd1-rd2)*(parentM - sumofdaughtermass);
268 P[2] = std::sqrt(energy * energy + 2.0 * e << 307 P[2] = std::sqrt(energy*energy + 2.0*energy*M[2]);
269 E[2] = energy; 308 E[2] = energy;
270 if (P[2] > momentummax) momentummax = P[2] << 309 if ( P[2] >momentummax )momentummax = P[2];
271 momentumsum += P[2]; << 310 momentumsum += P[2];
272 if (momentummax <= momentumsum - momentumm << 311 } while (momentummax > momentumsum - momentummax );
273 } << 312
274 #ifdef G4VERBOSE 313 #ifdef G4VERBOSE
275 if (GetVerboseLevel() > 2) { << 314 if (GetVerboseLevel()>2) {
276 G4cout << "G4KL3DecayChannel::PhaseSpace << 315 G4cout << "G4KL3DecayChannel::PhaseSpace ";
277 G4cout << "Kon mass:" << parentM / GeV << << 316 G4cout << "Kon mass:" << parentM/GeV << "GeV/c/c" << G4endl;
278 for (index = 0; index < 3; ++index) { << 317 for (index=0; index<3; index++){
279 G4cout << index << " : " << M[index] / G << 318 G4cout << index << " : " << M[index]/GeV << "GeV/c/c ";
280 G4cout << " : " << E[index] / GeV << "Ge << 319 G4cout << " : " << E[index]/GeV << "GeV ";
281 G4cout << " : " << P[index] / GeV << "Ge << 320 G4cout << " : " << P[index]/GeV << "GeV/c " << G4endl;
282 } << 321 }
283 } 322 }
284 #endif 323 #endif
285 } 324 }
286 325
287 G4double G4KL3DecayChannel::DalitzDensity(G4do << 326
288 G4do << 327 G4double G4KL3DecayChannel::DalitzDensity(G4double Epi, G4double El, G4double Enu)
289 { 328 {
290 // KL3 decay - Dalitz Plot Density, see Chou << 329 // KL3 decay Dalitz Plot Density
291 // Arguments << 330 // see Chounet et al Phys. Rep. 4, 201
>> 331 // arguments
292 // Epi: kinetic enregy of pion 332 // Epi: kinetic enregy of pion
293 // El: kinetic enregy of lepton (e or mu 333 // El: kinetic enregy of lepton (e or mu)
294 // Enu: kinetic energy of nutrino 334 // Enu: kinetic energy of nutrino
295 // Constants << 335 // constants
296 // pLambda : linear energy dependence of 336 // pLambda : linear energy dependence of f+
297 // pXi0 : = f+(0)/f- 337 // pXi0 : = f+(0)/f-
298 // pNorm : normalization factor 338 // pNorm : normalization factor
299 // Variables << 339 // variables
300 // Epi: total energy of pion 340 // Epi: total energy of pion
301 // El: total energy of lepton (e or mu) 341 // El: total energy of lepton (e or mu)
302 // Enu: total energy of nutrino 342 // Enu: total energy of nutrino
303 343
304 // calculate total energy << 344 // mass of daughters
>> 345 G4double massPi = daughterM[idPi];
>> 346 G4double massL = daughterM[idLepton];
>> 347 G4double massNu = daughterM[idNutrino];
>> 348
>> 349 // calcurate total energy
305 Epi = Epi + massPi; 350 Epi = Epi + massPi;
306 El = El + massL; << 351 El = El + massL;
307 Enu = Enu + massNu; 352 Enu = Enu + massNu;
>> 353
>> 354 G4double Epi_max = (massK*massK+massPi*massPi-massL*massL)/2.0/massK;
>> 355 G4double E = Epi_max - Epi;
>> 356 G4double q2 = massK*massK + massPi*massPi - 2.0*massK*Epi;
308 357
309 G4double Epi_max = (massK * massK + massPi * << 358 G4double F = 1.0 + pLambda*q2/massPi/massPi;
310 G4double E = Epi_max - Epi; <<
311 G4double q2 = massK * massK + massPi * massP <<
312 <<
313 G4double F = 1.0 + pLambda * q2 / massPi / m <<
314 G4double Fmax = 1.0; 359 G4double Fmax = 1.0;
315 if (pLambda > 0.0) Fmax = (1.0 + pLambda * ( << 360 if (pLambda >0.0) Fmax = (1.0 + pLambda*(massK*massK/massPi/massPi+1.0));
316 <<
317 G4double Xi = pXi0 * (1.0 + pLambda * q2 / m <<
318 361
319 G4double coeffA = massK * (2.0 * El * Enu - << 362 G4double Xi = pXi0*(1.0 + pLambda*q2/massPi/massPi);
320 G4double coeffB = massL * massL * (Enu - E / <<
321 G4double coeffC = massL * massL * E / 4.0; <<
322 363
323 G4double RhoMax = (Fmax * Fmax) * (massK * m << 364 G4double coeffA = massK*(2.0*El*Enu-massK*E)+massL*massL*(E/4.0-Enu);
>> 365 G4double coeffB = massL*massL*(Enu-E/2.0);
>> 366 G4double coeffC = massL*massL*E/4.0;
324 367
325 G4double Rho = (F * F) * (coeffA + coeffB * << 368 G4double RhoMax = (Fmax*Fmax)*(massK*massK*massK/8.0);
326 369
>> 370 G4double Rho = (F*F)*(coeffA + coeffB*Xi + coeffC*Xi*Xi);
>> 371
327 #ifdef G4VERBOSE 372 #ifdef G4VERBOSE
328 if (GetVerboseLevel() > 2) { << 373 if (GetVerboseLevel()>2) {
329 G4cout << "G4KL3DecayChannel::DalitzDensit << 374 G4cout << "G4KL3DecayChannel::DalitzDensity " <<G4endl;
330 G4cout << " Pi[" << massPi / GeV << "GeV/c << 375 G4cout << " Pi[" << massPi/GeV <<"GeV/c/c] :" << Epi/GeV << "GeV" <<G4endl;
331 G4cout << " L[" << massL / GeV << "GeV/c/c << 376 G4cout << " L[" << massL/GeV <<"GeV/c/c] :" << El/GeV << "GeV" <<G4endl;
332 G4cout << " Nu[" << massNu / GeV << "GeV/c << 377 G4cout << " Nu[" << massNu/GeV <<"GeV/c/c] :" << Enu/GeV << "GeV" <<G4endl;
333 G4cout << " F :" << F << " Fmax :" << Fmax << 378 G4cout << " F :" << F << " Fmax :" << Fmax << " Xi :" << Xi << G4endl;
334 G4cout << " A :" << coeffA << " B :" << c << 379 G4cout << " A :" << coeffA << " B :" << coeffB << " C :"<< coeffC <<G4endl;
335 G4cout << " Rho :" << Rho << " RhoMax :" << 380 G4cout << " Rho :" << Rho << " RhoMax :" << RhoMax << G4endl;
336 } 381 }
337 #endif 382 #endif
338 return (Rho / RhoMax); << 383 return (Rho/RhoMax);
339 } 384 }
>> 385
>> 386
340 387