Geant4 Cross Reference |
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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // 27 // 27 // 28 28 29 // ------------------------------------------- 29 // ------------------------------------------------------------ 30 // GEANT 4 class implemetation file 30 // GEANT 4 class implemetation file 31 // 31 // 32 // ---------------- G4FTFAnnihilation --- 32 // ---------------- G4FTFAnnihilation -------------- 33 // by V. Uzhinsky, Spring 2011. 33 // by V. Uzhinsky, Spring 2011. 34 // Take a projectile and a targ 34 // Take a projectile and a target 35 // make annihilation or re-orangement o 35 // make annihilation or re-orangement of quarks and anti-quarks. 36 // Ideas of Quark-Gluon-String model my A. 36 // Ideas of Quark-Gluon-String model my A. Capella and A.B. Kaidalov 37 // are implemented. 37 // are implemented. 38 // ------------------------------------------- 38 // --------------------------------------------------------------------- 39 39 40 #include "globals.hh" 40 #include "globals.hh" 41 #include "Randomize.hh" 41 #include "Randomize.hh" 42 #include "G4PhysicalConstants.hh" 42 #include "G4PhysicalConstants.hh" 43 #include "G4SystemOfUnits.hh" 43 #include "G4SystemOfUnits.hh" 44 44 45 #include "G4DiffractiveSplitableHadron.hh" 45 #include "G4DiffractiveSplitableHadron.hh" 46 #include "G4DiffractiveExcitation.hh" 46 #include "G4DiffractiveExcitation.hh" 47 #include "G4FTFParameters.hh" 47 #include "G4FTFParameters.hh" 48 #include "G4ElasticHNScattering.hh" 48 #include "G4ElasticHNScattering.hh" 49 #include "G4FTFAnnihilation.hh" 49 #include "G4FTFAnnihilation.hh" 50 50 51 #include "G4LorentzRotation.hh" 51 #include "G4LorentzRotation.hh" 52 #include "G4RotationMatrix.hh" 52 #include "G4RotationMatrix.hh" 53 #include "G4ThreeVector.hh" 53 #include "G4ThreeVector.hh" 54 #include "G4ParticleDefinition.hh" 54 #include "G4ParticleDefinition.hh" 55 #include "G4VSplitableHadron.hh" 55 #include "G4VSplitableHadron.hh" 56 #include "G4ExcitedString.hh" 56 #include "G4ExcitedString.hh" 57 #include "G4ParticleTable.hh" 57 #include "G4ParticleTable.hh" 58 #include "G4Neutron.hh" 58 #include "G4Neutron.hh" 59 #include "G4ParticleDefinition.hh" 59 #include "G4ParticleDefinition.hh" 60 60 61 #include "G4Exp.hh" 61 #include "G4Exp.hh" 62 #include "G4Log.hh" 62 #include "G4Log.hh" 63 #include "G4Pow.hh" 63 #include "G4Pow.hh" 64 64 65 //#include "UZHI_diffraction.hh" 65 //#include "UZHI_diffraction.hh" 66 66 67 #include "G4ParticleTable.hh" 67 #include "G4ParticleTable.hh" 68 68 69 //============================================ 69 //============================================================================ 70 70 71 //#define debugFTFannih 71 //#define debugFTFannih 72 72 73 73 74 //============================================ 74 //============================================================================ 75 75 76 G4FTFAnnihilation::G4FTFAnnihilation() {} 76 G4FTFAnnihilation::G4FTFAnnihilation() {} 77 77 78 78 79 //============================================ 79 //============================================================================ 80 80 81 G4FTFAnnihilation::~G4FTFAnnihilation() {} 81 G4FTFAnnihilation::~G4FTFAnnihilation() {} 82 82 83 83 84 //============================================ 84 //============================================================================ 85 85 86 G4bool G4FTFAnnihilation::Annihilate( G4VSplit 86 G4bool G4FTFAnnihilation::Annihilate( G4VSplitableHadron* projectile, 87 G4VSplit 87 G4VSplitableHadron* target, 88 G4VSplit 88 G4VSplitableHadron*& AdditionalString, 89 G4FTFPar 89 G4FTFParameters* theParameters ) const { 90 90 91 #ifdef debugFTFannih 91 #ifdef debugFTFannih 92 G4cout << "---------------------------- Anni 92 G4cout << "---------------------------- Annihilation----------------" << G4endl; 93 #endif 93 #endif 94 94 95 CommonVariables common; 95 CommonVariables common; 96 96 97 // Projectile parameters 97 // Projectile parameters 98 common.Pprojectile = projectile->Get4Momentu 98 common.Pprojectile = projectile->Get4Momentum(); 99 G4int ProjectilePDGcode = projectile->GetDef 99 G4int ProjectilePDGcode = projectile->GetDefinition()->GetPDGEncoding(); 100 if ( ProjectilePDGcode > 0 ) { 100 if ( ProjectilePDGcode > 0 ) { 101 target->SetStatus( 3 ); 101 target->SetStatus( 3 ); 102 return false; 102 return false; 103 } 103 } 104 G4double M0projectile2 = common.Pprojectile. 104 G4double M0projectile2 = common.Pprojectile.mag2(); 105 105 106 // Target parameters 106 // Target parameters 107 G4int TargetPDGcode = target->GetDefinition( 107 G4int TargetPDGcode = target->GetDefinition()->GetPDGEncoding(); 108 common.Ptarget = target->Get4Momentum(); 108 common.Ptarget = target->Get4Momentum(); 109 G4double M0target2 = common.Ptarget.mag2(); 109 G4double M0target2 = common.Ptarget.mag2(); 110 110 111 #ifdef debugFTFannih 111 #ifdef debugFTFannih 112 G4cout << "PDG codes " << ProjectilePDGcode 112 G4cout << "PDG codes " << ProjectilePDGcode << " " << TargetPDGcode << G4endl 113 << "Pprojec " << common.Pprojectile < 113 << "Pprojec " << common.Pprojectile << " " << common.Pprojectile.mag() << G4endl 114 << "Ptarget " << common.Ptarget << 114 << "Ptarget " << common.Ptarget << " " << common.Ptarget.mag() << G4endl 115 << "M0 proj target " << std::sqrt( M0 115 << "M0 proj target " << std::sqrt( M0projectile2 ) 116 << " " << std::sqrt( M0target2 ) << G 116 << " " << std::sqrt( M0target2 ) << G4endl; 117 #endif 117 #endif 118 118 119 // Kinematical properties of the interaction 119 // Kinematical properties of the interactions 120 G4LorentzVector Psum = common.Pprojectile + 120 G4LorentzVector Psum = common.Pprojectile + common.Ptarget; // 4-momentum in CMS 121 common.S = Psum.mag2(); 121 common.S = Psum.mag2(); 122 common.SqrtS = std::sqrt( common.S ); 122 common.SqrtS = std::sqrt( common.S ); 123 #ifdef debugFTFannih 123 #ifdef debugFTFannih 124 G4cout << "Psum SqrtS S " << Psum << " " << 124 G4cout << "Psum SqrtS S " << Psum << " " << common.SqrtS << " " << common.S << G4endl; 125 #endif 125 #endif 126 126 127 // Transform momenta to cms and then rotate 127 // Transform momenta to cms and then rotate parallel to z axis 128 G4LorentzRotation toCms( -1*Psum.boostVector 128 G4LorentzRotation toCms( -1*Psum.boostVector() ); 129 G4LorentzVector Ptmp( toCms*common.Pprojecti 129 G4LorentzVector Ptmp( toCms*common.Pprojectile ); 130 toCms.rotateZ( -1*Ptmp.phi() ); 130 toCms.rotateZ( -1*Ptmp.phi() ); 131 toCms.rotateY( -1*Ptmp.theta() ); 131 toCms.rotateY( -1*Ptmp.theta() ); 132 common.toLab = toCms.inverse(); 132 common.toLab = toCms.inverse(); 133 133 134 if ( G4UniformRand() <= G4Pow::GetInstance() 134 if ( G4UniformRand() <= G4Pow::GetInstance()->powA( 1880.0/common.SqrtS, 4.0 ) ) { 135 common.RotateStrings = true; 135 common.RotateStrings = true; 136 common.RandomRotation.rotateZ( 2.0*pi*G4Un 136 common.RandomRotation.rotateZ( 2.0*pi*G4UniformRand() ); 137 common.RandomRotation.rotateY( std::acos( 137 common.RandomRotation.rotateY( std::acos( 2.0*G4UniformRand() - 1.0 ) ); 138 common.RandomRotation.rotateZ( 2.0*pi*G4Un << 138 common.RandomRotation.rotateZ( 2.0*pi*G4UniformRand() ); //AR-Jun2018 139 } 139 } 140 140 141 G4double MesonProdThreshold = projectile->Ge 141 G4double MesonProdThreshold = projectile->GetDefinition()->GetPDGMass() + 142 target->GetDef 142 target->GetDefinition()->GetPDGMass() + 143 ( 2.0*140.0 + 143 ( 2.0*140.0 + 16.0 )*MeV; // 2 Mpi + DeltaE 144 G4double Prel2 = sqr(common.S) + sqr(M0proje 144 G4double Prel2 = sqr(common.S) + sqr(M0projectile2) + sqr(M0target2) 145 - 2.0*( common.S*(M0project 145 - 2.0*( common.S*(M0projectile2 + M0target2) + M0projectile2*M0target2 ); 146 Prel2 /= common.S; 146 Prel2 /= common.S; 147 G4double X_a = 0.0, X_b = 0.0, X_c = 0.0, X_ 147 G4double X_a = 0.0, X_b = 0.0, X_c = 0.0, X_d = 0.0; 148 if ( Prel2 <= 0.0 ) { 148 if ( Prel2 <= 0.0 ) { 149 // Annihilation at rest! Values are copied 149 // Annihilation at rest! Values are copied from Parameters 150 X_a = 625.1; // mb // 3-shirt diagram 150 X_a = 625.1; // mb // 3-shirt diagram 151 X_b = 0.0; // mb // anti-quark-quark 151 X_b = 0.0; // mb // anti-quark-quark annihilation 152 X_c = 49.989; // mb // 2 Q-Qbar string 152 X_c = 49.989; // mb // 2 Q-Qbar string creation 153 X_d = 6.614; // mb // One Q-Qbar strin 153 X_d = 6.614; // mb // One Q-Qbar string 154 #ifdef debugFTFannih 154 #ifdef debugFTFannih 155 G4cout << "Annih at Rest X a b c d " << X_ 155 G4cout << "Annih at Rest X a b c d " << X_a << " " << X_b << " " << X_c << " " << X_d 156 << G4endl; 156 << G4endl; 157 #endif 157 #endif 158 } else { // Annihilation in flight! 158 } else { // Annihilation in flight! 159 G4double FlowF = 1.0 / std::sqrt( Prel2 )* 159 G4double FlowF = 1.0 / std::sqrt( Prel2 )*GeV; 160 // Process cross sections 160 // Process cross sections 161 X_a = 25.0*FlowF; // mb 3-shirt diagram 161 X_a = 25.0*FlowF; // mb 3-shirt diagram 162 if ( common.SqrtS < MesonProdThreshold ) { 162 if ( common.SqrtS < MesonProdThreshold ) { 163 X_b = 3.13 + 140.0*G4Pow::GetInstance()- 163 X_b = 3.13 + 140.0*G4Pow::GetInstance()->powA( ( MesonProdThreshold - common.SqrtS )/GeV, 2.5 ); 164 } else { 164 } else { 165 X_b = 6.8*GeV / common.SqrtS; // mb ant 165 X_b = 6.8*GeV / common.SqrtS; // mb anti-quark-quark annihilation 166 } 166 } 167 if ( projectile->GetDefinition()->GetPDGMa 167 if ( projectile->GetDefinition()->GetPDGMass() + target->GetDefinition()->GetPDGMass() 168 > common.SqrtS ) { 168 > common.SqrtS ) { 169 X_b = 0.0; 169 X_b = 0.0; 170 } 170 } 171 // This can be in an interaction of low en 171 // This can be in an interaction of low energy anti-baryon with off-shell nuclear nucleon 172 X_c = 2.0 * FlowF * sqr( projectile->GetDe 172 X_c = 2.0 * FlowF * sqr( projectile->GetDefinition()->GetPDGMass() + 173 target->GetDefini 173 target->GetDefinition()->GetPDGMass() ) / common.S; // mb re-arrangement of 174 174 // 2 quarks and 2 anti-quarks 175 X_d = 23.3*GeV*GeV / common.S; // mb anti- 175 X_d = 23.3*GeV*GeV / common.S; // mb anti-quark-quark string creation 176 #ifdef debugFTFannih 176 #ifdef debugFTFannih 177 G4cout << "Annih in Flight X a b c d " << 177 G4cout << "Annih in Flight X a b c d " << X_a << " " << X_b << " " << X_c << " " << X_d 178 << G4endl << "SqrtS MesonProdThresh 178 << G4endl << "SqrtS MesonProdThreshold " << common.SqrtS << " " << MesonProdThreshold 179 << G4endl; 179 << G4endl; 180 #endif 180 #endif 181 } 181 } 182 182 183 G4bool isUnknown = false; 183 G4bool isUnknown = false; 184 if ( TargetPDGcode == 2212 || TargetPDGcod 184 if ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) { // Target proton or Delta+ 185 if ( ProjectilePDGcode == -2212 || 185 if ( ProjectilePDGcode == -2212 || ProjectilePDGcode == -2214 ) { // anti_proton or anti_Delta+ 186 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // 186 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // Pbar P 187 } else if ( ProjectilePDGcode == -2112 || 187 } else if ( ProjectilePDGcode == -2112 || ProjectilePDGcode == -2114 ) { // anti_neutron or anti_Delta0 188 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // 188 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // NeutrBar P 189 } else if ( ProjectilePDGcode == -3122 ) { 189 } else if ( ProjectilePDGcode == -3122 ) { // anti_Lambda (no anti_Lambda* in PDG) 190 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // 190 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // LambdaBar P 191 } else if ( ProjectilePDGcode == -3112 ) { 191 } else if ( ProjectilePDGcode == -3112 ) { // anti_Sigma- (no anti_Sigma*- in G4) 192 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // 192 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Sigma-Bar P 193 } else if ( ProjectilePDGcode == -3212 ) { 193 } else if ( ProjectilePDGcode == -3212 ) { // anti_Sigma0 (no anti_Sigma*0 in G4) 194 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // 194 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // Sigma0Bar P 195 } else if ( ProjectilePDGcode == -3222 ) { 195 } else if ( ProjectilePDGcode == -3222 ) { // anti_Sigma+ (no anti_Sigma*+ in G4) 196 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // 196 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // Sigma+Bar P 197 } else if ( ProjectilePDGcode == -3312 ) { 197 } else if ( ProjectilePDGcode == -3312 ) { // anti_Xi- (no anti_Xi*- in G4) 198 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // 198 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // Xi-Bar P 199 } else if ( ProjectilePDGcode == -3322 ) { 199 } else if ( ProjectilePDGcode == -3322 ) { // anti_Xi0 (no anti_Xi*0 in G4) 200 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // 200 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Xi0Bar P 201 } else if ( ProjectilePDGcode == -3334 ) { 201 } else if ( ProjectilePDGcode == -3334 ) { // anti_Omega- (no anti_Omega*- in PDG) 202 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // 202 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // Omega-Bar P 203 } else { 203 } else { 204 isUnknown = true; 204 isUnknown = true; 205 } 205 } 206 } else if ( TargetPDGcode == 2112 || Targe 206 } else if ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) { // Target neutron or Delta0 207 if ( ProjectilePDGcode == -2212 || 207 if ( ProjectilePDGcode == -2212 || ProjectilePDGcode == -2214 ) { // anti_proton or anti_Delta+ 208 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // 208 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // Pbar N 209 } else if ( ProjectilePDGcode == -2112 || 209 } else if ( ProjectilePDGcode == -2112 || ProjectilePDGcode == -2114 ) { // anti_neutron or anti_Delta0 210 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // 210 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // NeutrBar N 211 } else if ( ProjectilePDGcode == -3122 ) { 211 } else if ( ProjectilePDGcode == -3122 ) { // anti_Lambda (no anti_Lambda* in PDG) 212 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // 212 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // LambdaBar N 213 } else if ( ProjectilePDGcode == -3112 ) { 213 } else if ( ProjectilePDGcode == -3112 ) { // anti_Sigma- (no anti_Sigma*- in G4) 214 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // 214 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // Sigma-Bar N 215 } else if ( ProjectilePDGcode == -3212 ) { 215 } else if ( ProjectilePDGcode == -3212 ) { // anti_Sigma0 (no anti_Sigma*0 in G4) 216 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // 216 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // Sigma0Bar N 217 } else if ( ProjectilePDGcode == -3222 ) { 217 } else if ( ProjectilePDGcode == -3222 ) { // anti_Sigma+ (no anti_Sigma*+ in G4) 218 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // 218 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Sigma+Bar N 219 } else if ( ProjectilePDGcode == -3312 ) { 219 } else if ( ProjectilePDGcode == -3312 ) { // anti_Xi- (no anti_Xi*- in G4) 220 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // 220 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Xi-Bar N 221 } else if ( ProjectilePDGcode == -3322 ) { 221 } else if ( ProjectilePDGcode == -3322 ) { // anti_Xi0 (no anti_Xi*0 in G4) 222 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // 222 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // Xi0Bar N 223 } else if ( ProjectilePDGcode == -3334 ) { 223 } else if ( ProjectilePDGcode == -3334 ) { // anti_Omega- (no anti_Omega*- in PDG) 224 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // 224 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // Omega-Bar N 225 } else { 225 } else { 226 isUnknown = true; 226 isUnknown = true; 227 } 227 } 228 } else { 228 } else { 229 isUnknown = true; 229 isUnknown = true; 230 } 230 } 231 if ( isUnknown ) { 231 if ( isUnknown ) { 232 G4cout << "Unknown anti-baryon for FTF ann 232 G4cout << "Unknown anti-baryon for FTF annihilation: PDGcodes - " 233 << ProjectilePDGcode << " " << Targ 233 << ProjectilePDGcode << " " << TargetPDGcode << G4endl; 234 } 234 } 235 << 236 #ifdef debugFTFannih 235 #ifdef debugFTFannih 237 G4cout << "Annih Actual X a b c d " << X_a < 236 G4cout << "Annih Actual X a b c d " << X_a << " " << X_b << " " << X_c << " " << X_d << G4endl; 238 #endif 237 #endif 239 238 240 G4double Xannihilation = X_a + X_b + X_c + X 239 G4double Xannihilation = X_a + X_b + X_c + X_d; 241 240 242 // Projectile unpacking 241 // Projectile unpacking 243 UnpackBaryon( ProjectilePDGcode, common.AQ[0 242 UnpackBaryon( ProjectilePDGcode, common.AQ[0], common.AQ[1], common.AQ[2] ); 244 243 245 // Target unpacking 244 // Target unpacking 246 UnpackBaryon( TargetPDGcode, common.Q[0], co 245 UnpackBaryon( TargetPDGcode, common.Q[0], common.Q[1], common.Q[2] ); 247 246 248 G4double Ksi = G4UniformRand(); 247 G4double Ksi = G4UniformRand(); 249 248 250 if ( Ksi < X_a / Xannihilation ) { 249 if ( Ksi < X_a / Xannihilation ) { 251 return Create3QuarkAntiQuarkStrings( proje 250 return Create3QuarkAntiQuarkStrings( projectile, target, AdditionalString, theParameters, common ); 252 } 251 } 253 252 254 G4int resultCode = 99; 253 G4int resultCode = 99; 255 if ( Ksi < (X_a + X_b) / Xannihilation ) { 254 if ( Ksi < (X_a + X_b) / Xannihilation ) { 256 resultCode = Create1DiquarkAntiDiquarkStri 255 resultCode = Create1DiquarkAntiDiquarkString( projectile, target, common ); 257 if ( resultCode == 0 ) { 256 if ( resultCode == 0 ) { 258 return true; 257 return true; 259 } else if ( resultCode == 99 ) { 258 } else if ( resultCode == 99 ) { 260 return false; 259 return false; 261 } 260 } 262 } 261 } 263 262 264 if ( Ksi < ( X_a + X_b + X_c ) / Xannihilati 263 if ( Ksi < ( X_a + X_b + X_c ) / Xannihilation ) { 265 resultCode = Create2QuarkAntiQuarkStrings( 264 resultCode = Create2QuarkAntiQuarkStrings( projectile, target, theParameters, common ); 266 if ( resultCode == 0 ) { 265 if ( resultCode == 0 ) { 267 return true; 266 return true; 268 } else if ( resultCode == 99 ) { 267 } else if ( resultCode == 99 ) { 269 return false; 268 return false; 270 } 269 } 271 } 270 } 272 271 273 if ( Ksi < ( X_a + X_b + X_c + X_d ) / Xanni 272 if ( Ksi < ( X_a + X_b + X_c + X_d ) / Xannihilation ) { 274 return Create1QuarkAntiQuarkString( projec 273 return Create1QuarkAntiQuarkString( projectile, target, theParameters, common ); 275 } 274 } 276 275 277 return true; 276 return true; 278 } 277 } 279 278 280 << 281 //-------------------------------------------- 279 //----------------------------------------------------------------------- 282 280 283 G4bool G4FTFAnnihilation:: 281 G4bool G4FTFAnnihilation:: 284 Create3QuarkAntiQuarkStrings( G4VSplitableHadr 282 Create3QuarkAntiQuarkStrings( G4VSplitableHadron* projectile, 285 G4VSplitableHadr 283 G4VSplitableHadron* target, 286 G4VSplitableHadr 284 G4VSplitableHadron*& AdditionalString, 287 G4FTFParameters* 285 G4FTFParameters* theParameters, 288 G4FTFAnnihilatio 286 G4FTFAnnihilation::CommonVariables& common ) const { 289 // Simulation of 3 anti-quark - quark string 287 // Simulation of 3 anti-quark - quark strings creation 290 288 291 #ifdef debugFTFannih 289 #ifdef debugFTFannih 292 G4cout << "Process a, 3 shirt diagram" << G4 290 G4cout << "Process a, 3 shirt diagram" << G4endl; 293 #endif 291 #endif 294 292 295 // Sampling kinematical properties of quark. << 296 << 297 const G4int maxNumberOfLoops = 1000; << 298 G4double MassQ2 = 0.0; // Simp << 299 // In p << 300 G4double Quark_Xs[6]; << 301 G4ThreeVector Quark_Mom[6]; << 302 << 303 G4double Alfa_R = 0.5; << 304 G4double AveragePt2 = 200.0*200.0, maxPtSqua << 305 G4double ScaleFactor = 1.0; << 306 G4double Alfa = 0.0, Beta = 0.0; << 307 << 308 G4int NumberOfTries = 0, loopCounter = 0; << 309 << 310 do { << 311 // Sampling X's of anti-baryon and baryon << 312 G4double x1 = 0.0, x2 = 0.0, x3 = 0.0; << 313 G4double Product = 1.0; << 314 for ( G4int iCase = 0; iCase < 2; ++iCase << 315 << 316 G4double r1 = G4UniformRand(), r2 = G4Un << 317 if ( Alfa_R == 1.0 ) { << 318 x1 = 1.0 - std::sqrt( r1 ); << 319 x2 = (1.0 - x1) * r2; << 320 } else { << 321 x1 = sqr( r1 ); << 322 x2 = (1.0 - x1) * sqr( std::sin( pi/2. << 323 } << 324 x3 = 1.0 - x1 - x2; << 325 << 326 G4int index = iCase*3; // 0 for anti-ba << 327 Quark_Xs[index] = x1; Quark_Xs[index+1] << 328 Product *= (x1*x2*x3); << 329 } << 330 << 331 if ( Product == 0.0 ) continue; << 332 << 333 ++NumberOfTries; << 334 if ( NumberOfTries == 100*(NumberOfTries/1 << 335 // After a large number of tries, it is << 336 ScaleFactor /= 2.0; << 337 AveragePt2 *= ScaleFactor; << 338 } << 339 << 340 G4ThreeVector PtSum( 0.0, 0.0, 0.0 ); << 341 for ( G4int i = 0; i < 6; ++i ) { << 342 Quark_Mom [i] = GaussianPt( AveragePt2, << 343 PtSum += Quark_Mom[i]; << 344 } << 345 << 346 PtSum /= 6.0; << 347 Alfa = 0.0; Beta = 0.0; << 348 << 349 for ( G4int i = 0; i < 6; ++i ) { // Loop << 350 Quark_Mom[i] -= PtSum; << 351 << 352 G4double val = ( Quark_Mom[i].mag2() + M << 353 if ( i < 3 ) { // anti-baryon << 354 Alfa += val; << 355 } else { // baryon (iCase == 1) << 356 Beta += val; << 357 } << 358 } << 359 << 360 } while ( ( std::sqrt( Alfa ) + std::sqrt( B << 361 ++loopCounter < maxNumberOfLoops ) << 362 << 363 if ( loopCounter >= maxNumberOfLoops ) { << 364 return false; << 365 } << 366 << 367 G4double DecayMomentum2 = sqr(common.S) + sq << 368 - 2.0*( common.S*( << 369 << 370 G4double WminusTarget = 0.0, WplusProjectile << 371 WminusTarget = ( common.S - Alfa + Beta + st << 372 WplusProjectile = common.SqrtS - Beta/Wminus << 373 << 374 for ( G4int iCase = 0; iCase < 2; ++iCase ) << 375 G4int index = iCase*3; // << 376 G4double w = WplusProjectile; // << 377 if ( iCase == 1 ) w = - WminusTarget; // << 378 for ( G4int i = 0; i < 3; ++i ) { << 379 G4double Pz = w * Quark_Xs[index+i] / 2. << 380 ( Quark_Mom[index+i].mag2( << 381 ( 2.0 * w * Quark_Xs[index << 382 Quark_Mom[index+i].setZ( Pz ); << 383 } << 384 } << 385 << 386 // Sampling of anti-quark order in projectil 293 // Sampling of anti-quark order in projectile 387 G4int SampledCase = (G4int)G4RandFlat::shoot << 294 G4int SampledCase = G4RandFlat::shootInt( G4long( 6 ) ); 388 G4int Tmp1 = 0, Tmp2 = 0; 295 G4int Tmp1 = 0, Tmp2 = 0; 389 switch ( SampledCase ) { 296 switch ( SampledCase ) { 390 case 1 : Tmp1 = common.AQ[1]; common.AQ[1] 297 case 1 : Tmp1 = common.AQ[1]; common.AQ[1] = common.AQ[2]; common.AQ[2] = Tmp1; break; 391 case 2 : Tmp1 = common.AQ[0]; common.AQ[0] 298 case 2 : Tmp1 = common.AQ[0]; common.AQ[0] = common.AQ[1]; common.AQ[1] = Tmp1; break; 392 case 3 : Tmp1 = common.AQ[0]; Tmp2 299 case 3 : Tmp1 = common.AQ[0]; Tmp2 = common.AQ[1]; common.AQ[0] = common.AQ[2]; 393 common.AQ[1] = Tmp1; comm 300 common.AQ[1] = Tmp1; common.AQ[2] = Tmp2; break; 394 case 4 : Tmp1 = common.AQ[0]; Tmp2 301 case 4 : Tmp1 = common.AQ[0]; Tmp2 = common.AQ[1]; common.AQ[0] = Tmp2; 395 common.AQ[1] = common.AQ[2]; comm 302 common.AQ[1] = common.AQ[2]; common.AQ[2] = Tmp1; break; 396 case 5 : Tmp1 = common.AQ[0]; Tmp2 303 case 5 : Tmp1 = common.AQ[0]; Tmp2 = common.AQ[1]; common.AQ[0] = common.AQ[2]; 397 common.AQ[1] = Tmp2; comm 304 common.AQ[1] = Tmp2; common.AQ[2] = Tmp1; break; 398 } 305 } 399 306 400 // Set the string properties 307 // Set the string properties 401 // An anti quark - quark pair can have the q 308 // An anti quark - quark pair can have the quantum number of either a scalar meson 402 // or a vector meson: the last digit of the 309 // or a vector meson: the last digit of the PDG code is, respectively, 1 and 3. 403 // For simplicity only scalar is considered 310 // For simplicity only scalar is considered here. 404 G4int NewCode = 0, antiQuark = 0, quark = 0; 311 G4int NewCode = 0, antiQuark = 0, quark = 0; 405 G4ParticleDefinition* TestParticle = nullptr 312 G4ParticleDefinition* TestParticle = nullptr; 406 for ( G4int iString = 0; iString < 3; ++iStr 313 for ( G4int iString = 0; iString < 3; ++iString ) { // Loop over the 3 string cases 407 if ( iString == 0 ) { 314 if ( iString == 0 ) { 408 antiQuark = common.AQ[0]; quark = commo 315 antiQuark = common.AQ[0]; quark = common.Q[0]; >> 316 projectile->SplitUp(); 409 projectile->SetFirstParton( antiQuark ); 317 projectile->SetFirstParton( antiQuark ); 410 projectile->SetSecondParton( quark ); 318 projectile->SetSecondParton( quark ); 411 projectile->SetStatus( 0 ); 319 projectile->SetStatus( 0 ); 412 } else if ( iString == 1 ) { 320 } else if ( iString == 1 ) { 413 quark = common.Q[1]; antiQuark = common 321 quark = common.Q[1]; antiQuark = common.AQ[1]; >> 322 target->SplitUp(); 414 target->SetFirstParton( quark ); 323 target->SetFirstParton( quark ); 415 target->SetSecondParton( antiQuark ); 324 target->SetSecondParton( antiQuark ); 416 target->SetStatus( 0 ); 325 target->SetStatus( 0 ); 417 } else { // iString == 2 326 } else { // iString == 2 418 antiQuark = common.AQ[2]; quark = commo 327 antiQuark = common.AQ[2]; quark = common.Q[2]; 419 } 328 } 420 G4int absAntiQuark = std::abs( antiQuark ) 329 G4int absAntiQuark = std::abs( antiQuark ), absQuark = std::abs( quark ); 421 G4double aKsi = G4UniformRand(); 330 G4double aKsi = G4UniformRand(); 422 if ( absAntiQuark == absQuark ) { 331 if ( absAntiQuark == absQuark ) { 423 if ( absAntiQuark != 3 ) { // Not yet c << 332 if ( absAntiQuark != 3 ) { 424 NewCode = 111; // Pi0-meson 333 NewCode = 111; // Pi0-meson 425 if ( aKsi < 0.5 ) { 334 if ( aKsi < 0.5 ) { 426 NewCode = 221; // Eta -meso 335 NewCode = 221; // Eta -meson 427 if ( aKsi < 0.25 ) { 336 if ( aKsi < 0.25 ) { 428 NewCode = 331; // Eta'-meso 337 NewCode = 331; // Eta'-meson 429 } 338 } 430 } 339 } 431 } else { 340 } else { 432 NewCode = 221; // Eta -meso 341 NewCode = 221; // Eta -meson 433 if ( aKsi < 0.5 ) { 342 if ( aKsi < 0.5 ) { 434 NewCode = 331; // Eta'-meso 343 NewCode = 331; // Eta'-meson 435 } 344 } 436 } 345 } 437 } else { // Vector mesons - rho, omega, p << 346 } else { 438 if ( absAntiQuark > absQuark ) { 347 if ( absAntiQuark > absQuark ) { 439 NewCode = absAntiQuark*100 + absQuark* 348 NewCode = absAntiQuark*100 + absQuark*10 + 1; NewCode *= absAntiQuark/antiQuark; 440 } else { 349 } else { 441 NewCode = absQuark*100 + absAntiQuark* 350 NewCode = absQuark*100 + absAntiQuark*10 + 1; NewCode *= absQuark/quark; 442 } 351 } 443 } 352 } 444 if ( iString == 2 ) AdditionalString = new 353 if ( iString == 2 ) AdditionalString = new G4DiffractiveSplitableHadron(); 445 TestParticle = G4ParticleTable::GetParticl 354 TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode ); 446 if ( ! TestParticle ) return false; 355 if ( ! TestParticle ) return false; 447 if ( iString == 0 ) { 356 if ( iString == 0 ) { 448 projectile->SetDefinition( TestParticle 357 projectile->SetDefinition( TestParticle ); 449 theParameters->SetProjMinDiffMass( 0.5 ) << 358 theParameters->SetProjMinDiffMass( 0.5 ); 450 theParameters->SetProjMinNonDiffMass( 0. << 359 theParameters->SetProjMinNonDiffMass( 0.5 ); 451 } else if ( iString == 1 ) { 360 } else if ( iString == 1 ) { 452 target->SetDefinition( TestParticle ); 361 target->SetDefinition( TestParticle ); 453 theParameters->SetTarMinDiffMass( 0.5 ); 362 theParameters->SetTarMinDiffMass( 0.5 ); 454 theParameters->SetTarMinNonDiffMass( 0.5 363 theParameters->SetTarMinNonDiffMass( 0.5 ); 455 } else { // iString == 2 364 } else { // iString == 2 456 AdditionalString->SetDefinition( TestPar 365 AdditionalString->SetDefinition( TestParticle ); >> 366 AdditionalString->SplitUp(); 457 AdditionalString->SetFirstParton( common 367 AdditionalString->SetFirstParton( common.AQ[2] ); 458 AdditionalString->SetSecondParton( commo 368 AdditionalString->SetSecondParton( common.Q[2] ); 459 AdditionalString->SetStatus( 0 ); 369 AdditionalString->SetStatus( 0 ); 460 } 370 } 461 } // End of the for loop over the 3 string 371 } // End of the for loop over the 3 string cases 462 372 >> 373 // Sampling kinematical properties: 463 // 1st string AQ[0]-Q[0], 2nd string AQ[1]-Q 374 // 1st string AQ[0]-Q[0], 2nd string AQ[1]-Q[1], 3rd string AQ[2]-Q[2] 464 375 >> 376 G4ThreeVector Quark_Mom[6]; >> 377 G4double ModMom2[6]; >> 378 G4double AveragePt2 = 200.0*200.0, maxPtSquare = common.S, SumMt = 0.0, MassQ2 = 0.0, >> 379 ScaleFactor = 1.0; >> 380 G4int NumberOfTries = 0, loopCounter = 0; >> 381 const G4int maxNumberOfLoops = 1000; >> 382 do { >> 383 ++NumberOfTries; >> 384 if ( NumberOfTries == 100*(NumberOfTries/100) ) { >> 385 // At large number of tries it would be better to reduce the values of <Pt^2> >> 386 ScaleFactor /= 2.0; >> 387 AveragePt2 *= ScaleFactor; >> 388 } >> 389 G4ThreeVector PtSum( 0.0, 0.0, 0.0 ); >> 390 for ( G4int i = 0; i < 6; ++i ) { >> 391 Quark_Mom [i] = GaussianPt( AveragePt2, maxPtSquare ); >> 392 PtSum += Quark_Mom[i]; >> 393 } >> 394 PtSum /= 6.0; >> 395 SumMt = 0.0; >> 396 for ( G4int i = 0; i < 6; ++i ) { >> 397 Quark_Mom[i] -= PtSum; >> 398 ModMom2[i] = Quark_Mom[i].mag2(); >> 399 SumMt += std::sqrt( ModMom2[i] + MassQ2 ); >> 400 } >> 401 } while ( ( SumMt > common.SqrtS ) && >> 402 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */ >> 403 if ( loopCounter >= maxNumberOfLoops ) { >> 404 return false; >> 405 } >> 406 >> 407 // Sampling X's of anti-baryon and baryon >> 408 G4double WminusTarget = 0.0, WplusProjectile = 0.0; >> 409 G4double Alfa_R = 0.5; ScaleFactor = 1.0; >> 410 G4bool Success = true; >> 411 NumberOfTries = 0; loopCounter = 0; >> 412 do { >> 413 Success = true; >> 414 ++NumberOfTries; >> 415 if ( NumberOfTries == 100*(NumberOfTries/100) ) { >> 416 // At large number of tries it would be better to reduce the values of Pt's >> 417 ScaleFactor /= 2.0; >> 418 } >> 419 G4double Alfa = 0.0, Beta = 0.0; >> 420 for ( G4int iCase = 0; iCase < 2; ++iCase ) { // anti-baryon (1st case), baryon (2nd case) >> 421 G4double x1 = 0.0, x2 = 0.0; >> 422 G4double r1 = G4UniformRand(), r2 = G4UniformRand(); >> 423 if ( Alfa_R == 1.0 ) { >> 424 x1 = 1.0 - std::sqrt( r1 ); >> 425 x2 = (1.0 - x1) * r2; >> 426 } else { >> 427 x1 = sqr( r1 ); >> 428 x2 = (1.0 - x1) * sqr( std::sin( pi/2.0*r2 ) ); >> 429 } >> 430 G4double x3 = 1.0 - x1 - x2; >> 431 G4int index = iCase*3; // 0 for anti-baryon, 3 for baryon >> 432 Quark_Mom[index].setZ( x1 ); Quark_Mom[index+1].setZ( x2 ); Quark_Mom[index+2].setZ( x3 ); >> 433 for ( G4int i = 0; i < 3; ++i ) { // Loop over the 3 (anti-)quarks >> 434 if ( Quark_Mom[index+i].getZ() != 0.0 ) { >> 435 G4double val = ( ScaleFactor * ModMom2[index+i] + MassQ2 ) / Quark_Mom[index+i].getZ(); >> 436 if ( iCase == 0 ) { // anti-baryon >> 437 Alfa += val; >> 438 } else { // baryon (iCase == 1) >> 439 Beta += val; >> 440 } >> 441 } else { >> 442 Success = false; >> 443 } >> 444 } >> 445 } >> 446 if ( ! Success ) continue; >> 447 if ( std::sqrt( Alfa ) + std::sqrt( Beta ) > common.SqrtS ) { >> 448 Success = false; >> 449 continue; >> 450 } >> 451 G4double DecayMomentum2 = sqr(common.S) + sqr(Alfa) + sqr(Beta) >> 452 - 2.0*( common.S*(Alfa + Beta) + Alfa*Beta ); >> 453 WminusTarget = ( common.S - Alfa + Beta + std::sqrt( DecayMomentum2 ) ) / 2.0 / common.SqrtS; >> 454 WplusProjectile = common.SqrtS - Beta/WminusTarget; >> 455 } while ( ( ! Success ) && >> 456 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */ >> 457 if ( loopCounter >= maxNumberOfLoops ) { >> 458 return false; >> 459 } >> 460 >> 461 G4double SqrtScaleF = std::sqrt( ScaleFactor ); >> 462 for ( G4int iCase = 0; iCase < 2; ++iCase ) { // anti-baryon (1st case), baryon (2nd case) >> 463 G4int index = iCase*3; // 0 for anti-baryon, 3 for baryon >> 464 G4double w = WplusProjectile; // for anti-baryon >> 465 if ( iCase == 1 ) w = - WminusTarget; // for baryon >> 466 for ( G4int i = 0; i < 3; ++i ) { >> 467 G4double Pz = w * Quark_Mom[index+i].getZ() / 2.0 - >> 468 ( ScaleFactor * ModMom2[index+i] + MassQ2 ) / >> 469 ( 2.0 * w * Quark_Mom[index+i].getZ() ); >> 470 Quark_Mom[index+i].setZ( Pz ); >> 471 if ( ScaleFactor != 1.0 ) { >> 472 Quark_Mom[index+i].setX( SqrtScaleF * Quark_Mom[index+i].getX() ); >> 473 Quark_Mom[index+i].setY( SqrtScaleF * Quark_Mom[index+i].getY() ); >> 474 } >> 475 } >> 476 } 465 G4LorentzVector Pstring1, Pstring2, Pstring3 477 G4LorentzVector Pstring1, Pstring2, Pstring3; 466 G4int QuarkOrder[3] = { 0 }; << 467 G4double YstringMax = 0.0, YstringMin = 0.0; 478 G4double YstringMax = 0.0, YstringMin = 0.0; 468 for ( G4int i = 0; i < 3; ++i ) { 479 for ( G4int i = 0; i < 3; ++i ) { 469 G4ThreeVector tmp = Quark_Mom[i] + Quark_M 480 G4ThreeVector tmp = Quark_Mom[i] + Quark_Mom[i+3]; 470 G4LorentzVector Pstring( tmp, std::sqrt( Q 481 G4LorentzVector Pstring( tmp, std::sqrt( Quark_Mom[i].mag2() + MassQ2 ) + 471 std::sqrt( Q 482 std::sqrt( Quark_Mom[i+3].mag2() + MassQ2 ) ); >> 483 //AR-Jun2018 if ( common.RotateStrings ) Pstring *= common.RandomRotation; 472 // Add protection for rapidity = 0.5*ln( 484 // Add protection for rapidity = 0.5*ln( (E+Pz)/(E-Pz) ) 473 G4double Ystring = 0.0; 485 G4double Ystring = 0.0; 474 if ( Pstring.e() > 1.0e-30 ) { 486 if ( Pstring.e() > 1.0e-30 ) { 475 if ( Pstring.e() + Pstring.pz() < 1.0e-3 487 if ( Pstring.e() + Pstring.pz() < 1.0e-30 ) { // Very small numerator in the logarithm 476 Ystring = -1.0e30; // A very large n 488 Ystring = -1.0e30; // A very large negative value (E ~= -Pz) 477 if ( Pstring.e() - Pstring.pz() < 1.0e 489 if ( Pstring.e() - Pstring.pz() < 1.0e-30 ) { // Very small denominator in the logarithm 478 Ystring = 1.0e30; // A very large p 490 Ystring = 1.0e30; // A very large positive value (E ~= Pz) 479 } else { // Normal case 491 } else { // Normal case 480 Ystring = Pstring.rapidity(); 492 Ystring = Pstring.rapidity(); 481 } 493 } 482 } 494 } 483 } 495 } 484 // Keep ordering in rapidity: "1" highest, 496 // Keep ordering in rapidity: "1" highest, "2" middle, "3" smallest 485 if ( i == 0 ) { 497 if ( i == 0 ) { 486 Pstring1 = Pstring; YstringMax = Yst << 498 Pstring1 = Pstring; YstringMax = Ystring; 487 QuarkOrder[0] = 0; << 488 } else if ( i == 1 ) { 499 } else if ( i == 1 ) { 489 if ( Ystring > YstringMax ) { 500 if ( Ystring > YstringMax ) { 490 Pstring2 = Pstring1; YstringMin = Yst << 501 Pstring2 = Pstring1; YstringMin = YstringMax; 491 Pstring1 = Pstring; YstringMax = Yst << 502 Pstring1 = Pstring; YstringMax = Ystring; 492 QuarkOrder[0] = 1; QuarkOrder[1] = 0; << 493 } else { 503 } else { 494 Pstring2 = Pstring; YstringMin = Yst << 504 Pstring2 = Pstring; YstringMin = Ystring; 495 QuarkOrder[1] = 1; << 496 } 505 } 497 } else { // i == 2 506 } else { // i == 2 498 if ( Ystring > YstringMax ) { 507 if ( Ystring > YstringMax ) { 499 Pstring3 = Pstring2; 508 Pstring3 = Pstring2; 500 Pstring2 = Pstring1; 509 Pstring2 = Pstring1; 501 Pstring1 = Pstring; 510 Pstring1 = Pstring; 502 QuarkOrder[1] = QuarkOrder[0]; << 503 QuarkOrder[2] = QuarkOrder[1]; << 504 QuarkOrder[0] = 2; << 505 } else if ( Ystring > YstringMin ) { 511 } else if ( Ystring > YstringMin ) { 506 Pstring3 = Pstring2; 512 Pstring3 = Pstring2; 507 Pstring2 = Pstring; 513 Pstring2 = Pstring; 508 } else { 514 } else { 509 Pstring3 = Pstring; << 515 Pstring3 = Pstring; 510 QuarkOrder[2] = 2; << 511 } 516 } 512 } 517 } 513 } 518 } 514 << 515 G4LorentzVector Quark_4Mom[6]; << 516 for ( G4int i = 0; i < 6; ++i ) { << 517 Quark_4Mom[i] = G4LorentzVector( Quark_Mom << 518 if ( common.RotateStrings ) Quark_4Mom[i] << 519 Quark_4Mom[i].transform( common.toLab ); << 520 } << 521 << 522 projectile->Splitting(); << 523 projectile->GetNextAntiParton()->Set4Momentu << 524 projectile->GetNextParton()->Set4Momentum( Q << 525 << 526 target->Splitting(); << 527 target->GetNextParton()->Set4Momentum( Quark << 528 target->GetNextAntiParton()->Set4Momentum( Q << 529 << 530 AdditionalString->Splitting(); << 531 AdditionalString->GetNextAntiParton()->Set4M << 532 AdditionalString->GetNextParton()->Set4Momen << 533 << 534 common.Pprojectile = Pstring1; // 519 common.Pprojectile = Pstring1; // Highest rapidity 535 common.Ptarget = Pstring3; // 520 common.Ptarget = Pstring3; // Lowest rapidity 536 G4LorentzVector LeftString( Pstring2 ); // 521 G4LorentzVector LeftString( Pstring2 ); // Middle rapidity 537 522 538 if ( common.RotateStrings ) { << 523 if ( common.RotateStrings ) { //AR-Jun2018 539 common.Pprojectile *= common.RandomRotatio 524 common.Pprojectile *= common.RandomRotation; 540 common.Ptarget *= common.RandomRotatio << 541 LeftString *= common.RandomRotatio 525 LeftString *= common.RandomRotation; >> 526 common.Ptarget *= common.RandomRotation; 542 } 527 } 543 528 544 common.Pprojectile.transform( common.toLab ) 529 common.Pprojectile.transform( common.toLab ); 545 common.Ptarget.transform( common.toLab ); << 546 LeftString.transform( common.toLab ); 530 LeftString.transform( common.toLab ); 547 << 531 common.Ptarget.transform( common.toLab ); >> 532 548 // Calculation of the creation time 533 // Calculation of the creation time 549 // Creation time and position of target nucl 534 // Creation time and position of target nucleon were determined in ReggeonCascade() of G4FTFModel 550 projectile->SetTimeOfCreation( target->GetTi 535 projectile->SetTimeOfCreation( target->GetTimeOfCreation() ); 551 projectile->SetPosition( target->GetPosition 536 projectile->SetPosition( target->GetPosition() ); 552 AdditionalString->SetTimeOfCreation( target- 537 AdditionalString->SetTimeOfCreation( target->GetTimeOfCreation() ); 553 AdditionalString->SetPosition( target->GetPo 538 AdditionalString->SetPosition( target->GetPosition() ); 554 539 555 projectile->Set4Momentum( common.Pprojectile 540 projectile->Set4Momentum( common.Pprojectile ); 556 AdditionalString->Set4Momentum( LeftString ) 541 AdditionalString->Set4Momentum( LeftString ); 557 target->Set4Momentum( common.Ptarget ); 542 target->Set4Momentum( common.Ptarget ); 558 << 559 projectile->IncrementCollisionCount( 1 ); 543 projectile->IncrementCollisionCount( 1 ); 560 AdditionalString->IncrementCollisionCount( 1 544 AdditionalString->IncrementCollisionCount( 1 ); 561 target->IncrementCollisionCount( 1 ); 545 target->IncrementCollisionCount( 1 ); 562 546 563 return true; 547 return true; 564 } 548 } 565 549 566 << 567 //-------------------------------------------- 550 //----------------------------------------------------------------------- 568 551 569 G4int G4FTFAnnihilation:: 552 G4int G4FTFAnnihilation:: 570 Create1DiquarkAntiDiquarkString( G4VSplitableH 553 Create1DiquarkAntiDiquarkString( G4VSplitableHadron* projectile, 571 G4VSplitableH 554 G4VSplitableHadron* target, 572 G4FTFAnnihila 555 G4FTFAnnihilation::CommonVariables& common ) const { 573 // Simulation of anti-diquark-diquark string 556 // Simulation of anti-diquark-diquark string creation. 574 // This method returns an integer code - ins 557 // This method returns an integer code - instead of a boolean, with the following meaning: 575 // "0" : successfully ended and nothing el 558 // "0" : successfully ended and nothing else needs to be done; 576 // "1" : successfully completed, but the w 559 // "1" : successfully completed, but the work needs to be continued; 577 // "99" : unsuccessfully ended, nothing els 560 // "99" : unsuccessfully ended, nothing else can be done. 578 561 579 #ifdef debugFTFannih 562 #ifdef debugFTFannih 580 G4cout << "Process b, quark - anti-quark ann 563 G4cout << "Process b, quark - anti-quark annihilation, di-q - anti-di-q string" << G4endl; 581 #endif 564 #endif 582 565 583 G4int CandidatsN = 0, CandAQ[9][2] = {}, Can 566 G4int CandidatsN = 0, CandAQ[9][2] = {}, CandQ[9][2] = {}; 584 for ( G4int iAQ = 0; iAQ < 3; ++iAQ ) { // 567 for ( G4int iAQ = 0; iAQ < 3; ++iAQ ) { // index of the 3 constituent anti-quarks of the antibaryon projectile 585 for ( G4int iQ = 0; iQ < 3; ++iQ ) { // << 568 for ( G4int iQ = 0; iQ < 3; ++iQ ) { // index of the 3 constituent quarks of the nucleon target 586 if ( -common.AQ[iAQ] == common.Q[iQ] ) { 569 if ( -common.AQ[iAQ] == common.Q[iQ] ) { // antiquark - quark that can annihilate 587 // Here "0", "1", "2" means, respectiv 570 // Here "0", "1", "2" means, respectively, "first", "second" and "third" constituent 588 // of the (anti-baryon) projectile or 571 // of the (anti-baryon) projectile or (nucleon) target. 589 if ( iAQ == 0 ) { CandAQ[CandidatsN][0 572 if ( iAQ == 0 ) { CandAQ[CandidatsN][0] = 1; CandAQ[CandidatsN][1] = 2; } 590 if ( iAQ == 1 ) { CandAQ[CandidatsN][0 573 if ( iAQ == 1 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 2; } 591 if ( iAQ == 2 ) { CandAQ[CandidatsN][0 574 if ( iAQ == 2 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 1; } 592 if ( iQ == 0 ) { CandQ[CandidatsN][0] 575 if ( iQ == 0 ) { CandQ[CandidatsN][0] = 1; CandQ[CandidatsN][1] = 2; } 593 if ( iQ == 1 ) { CandQ[CandidatsN][0] 576 if ( iQ == 1 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 2; } 594 if ( iQ == 2 ) { CandQ[CandidatsN][0] 577 if ( iQ == 2 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 1; } 595 ++CandidatsN; 578 ++CandidatsN; 596 } 579 } 597 } 580 } 598 } 581 } 599 582 600 // Remaining two (anti-)quarks that form the 583 // Remaining two (anti-)quarks that form the (anti-)diquark 601 G4int LeftAQ1 = 0, LeftAQ2 = 0, LeftQ1 = 0, 584 G4int LeftAQ1 = 0, LeftAQ2 = 0, LeftQ1 = 0, LeftQ2 = 0; 602 if ( CandidatsN != 0 ) { 585 if ( CandidatsN != 0 ) { 603 G4int SampledCase = (G4int)G4RandFlat::sho << 586 G4int SampledCase = G4RandFlat::shootInt( G4long( CandidatsN ) ); 604 LeftAQ1 = common.AQ[ CandAQ[SampledCase][0 587 LeftAQ1 = common.AQ[ CandAQ[SampledCase][0] ]; 605 LeftAQ2 = common.AQ[ CandAQ[SampledCase][1 588 LeftAQ2 = common.AQ[ CandAQ[SampledCase][1] ]; 606 LeftQ1 = common.Q[ CandQ[SampledCase][0] 589 LeftQ1 = common.Q[ CandQ[SampledCase][0] ]; 607 LeftQ2 = common.Q[ CandQ[SampledCase][1] 590 LeftQ2 = common.Q[ CandQ[SampledCase][1] ]; 608 591 609 // Build anti-diquark and diquark : the la 592 // Build anti-diquark and diquark : the last digit can be either 3 - for all combinations 610 // of anti-quark - anti-quark and quark - 593 // of anti-quark - anti-quark and quark - quark - or 1 - only when the two anti-quarks 611 // or quarks are different. For simplicity 594 // or quarks are different. For simplicity, only 3 is considered. 612 G4int Anti_DQ = 0, DQ = 0; 595 G4int Anti_DQ = 0, DQ = 0; 613 if ( std::abs( LeftAQ1 ) > std::abs( LeftA 596 if ( std::abs( LeftAQ1 ) > std::abs( LeftAQ2 ) ) { 614 Anti_DQ = 1000*LeftAQ1 + 100*LeftAQ2 - 3 597 Anti_DQ = 1000*LeftAQ1 + 100*LeftAQ2 - 3; 615 } else { 598 } else { 616 Anti_DQ = 1000*LeftAQ2 + 100*LeftAQ1 - 3 599 Anti_DQ = 1000*LeftAQ2 + 100*LeftAQ1 - 3; 617 } 600 } 618 if ( std::abs( LeftQ1 ) > std::abs( LeftQ2 601 if ( std::abs( LeftQ1 ) > std::abs( LeftQ2 ) ) { 619 DQ = 1000*LeftQ1 + 100*LeftQ2 + 3; 602 DQ = 1000*LeftQ1 + 100*LeftQ2 + 3; 620 } else { 603 } else { 621 DQ = 1000*LeftQ2 + 100*LeftQ1 + 3; 604 DQ = 1000*LeftQ2 + 100*LeftQ1 + 3; 622 } 605 } 623 606 624 // Set the string properties 607 // Set the string properties >> 608 projectile->SplitUp(); 625 projectile->SetFirstParton( DQ ); 609 projectile->SetFirstParton( DQ ); 626 projectile->SetSecondParton( Anti_DQ ); 610 projectile->SetSecondParton( Anti_DQ ); 627 611 628 // It is assumed that quark and di-quark m << 629 G4LorentzVector Pquark = G4LorentzVector( << 630 G4LorentzVector Paquark = G4LorentzVector( << 631 << 632 if ( common.RotateStrings ) { 612 if ( common.RotateStrings ) { >> 613 G4LorentzVector Pquark = G4LorentzVector( 0.0, 0.0, common.SqrtS/2.0, common.SqrtS/2.0 ); 633 Pquark *= common.RandomRotation; 614 Pquark *= common.RandomRotation; >> 615 G4LorentzVector Paquark = G4LorentzVector( 0.0, 0.0, -common.SqrtS/2.0, common.SqrtS/2.0 ); 634 Paquark *= common.RandomRotation; 616 Paquark *= common.RandomRotation; >> 617 Pquark.transform( common.toLab ); projectile->GetNextParton()->Set4Momentum( Pquark ); >> 618 Paquark.transform( common.toLab ); projectile->GetNextAntiParton()->Set4Momentum( Paquark ); 635 } 619 } 636 620 637 Pquark.transform( common.toLab ); << 638 Paquark.transform( common.toLab ); << 639 << 640 projectile->GetNextParton()->Set4Momentum( << 641 projectile->GetNextAntiParton()->Set4Momen << 642 << 643 projectile->Splitting(); << 644 << 645 projectile->SetStatus( 0 ); 621 projectile->SetStatus( 0 ); 646 target->SetStatus( 4 ); // The target nuc 622 target->SetStatus( 4 ); // The target nucleon has annihilated 3->4 647 common.Pprojectile.setPx( 0.0 ); 623 common.Pprojectile.setPx( 0.0 ); 648 common.Pprojectile.setPy( 0.0 ); 624 common.Pprojectile.setPy( 0.0 ); 649 common.Pprojectile.setPz( 0.0 ); 625 common.Pprojectile.setPz( 0.0 ); 650 common.Pprojectile.setE( common.SqrtS ); 626 common.Pprojectile.setE( common.SqrtS ); 651 common.Pprojectile.transform( common.toLab 627 common.Pprojectile.transform( common.toLab ); 652 628 653 // Calculation of the creation time 629 // Calculation of the creation time 654 // Creation time and position of target nu 630 // Creation time and position of target nucleon were determined in ReggeonCascade() of G4FTFModel 655 projectile->SetTimeOfCreation( target->Get 631 projectile->SetTimeOfCreation( target->GetTimeOfCreation() ); 656 projectile->SetPosition( target->GetPositi 632 projectile->SetPosition( target->GetPosition() ); 657 projectile->Set4Momentum( common.Pprojecti 633 projectile->Set4Momentum( common.Pprojectile ); 658 << 659 projectile->IncrementCollisionCount( 1 ); 634 projectile->IncrementCollisionCount( 1 ); 660 target->IncrementCollisionCount( 1 ); 635 target->IncrementCollisionCount( 1 ); 661 636 662 return 0; // Completed successfully: noth 637 return 0; // Completed successfully: nothing else to be done 663 } // End of if ( CandidatsN != 0 ) 638 } // End of if ( CandidatsN != 0 ) 664 639 665 // If we allow the string to interact with o << 666 // set up MinDiffrMass in Parameters, and as << 667 << 668 return 1; // Successfully ended, but the wo 640 return 1; // Successfully ended, but the work is not over 669 } 641 } 670 642 671 << 672 //-------------------------------------------- 643 //----------------------------------------------------------------------- 673 644 674 G4int G4FTFAnnihilation:: 645 G4int G4FTFAnnihilation:: 675 Create2QuarkAntiQuarkStrings( G4VSplitableHadr 646 Create2QuarkAntiQuarkStrings( G4VSplitableHadron* projectile, 676 G4VSplitableHadr 647 G4VSplitableHadron* target, 677 G4FTFParameters* 648 G4FTFParameters* theParameters, 678 G4FTFAnnihilatio 649 G4FTFAnnihilation::CommonVariables& common ) const { 679 // Simulation of 2 anti-quark-quark strings 650 // Simulation of 2 anti-quark-quark strings creation. 680 // This method returns an integer code - ins 651 // This method returns an integer code - instead of a boolean, with the following meaning: 681 // "0" : successfully ended and nothing el 652 // "0" : successfully ended and nothing else needs to be done; 682 // "1" : successfully completed, but the w 653 // "1" : successfully completed, but the work needs to be continued; 683 // "99" : unsuccessfully ended, nothing els 654 // "99" : unsuccessfully ended, nothing else can be done. 684 655 685 #ifdef debugFTFannih 656 #ifdef debugFTFannih 686 G4cout << "Process c, quark - anti-quark and 657 G4cout << "Process c, quark - anti-quark and string junctions annihilation, 2 strings left." 687 << G4endl; 658 << G4endl; 688 #endif 659 #endif 689 660 690 // Sampling kinematical properties: 1st stri << 691 G4ThreeVector Quark_Mom[4]; << 692 G4double Quark_Xs[4]; << 693 G4double AveragePt2 = 200.0*200.0, maxPtSqua << 694 G4int NumberOfTries = 0, loopCounter = 0; << 695 const G4int maxNumberOfLoops = 1000; << 696 G4double Alfa = 0.0, Beta = 0.0; << 697 G4double WminusTarget = 0.0, WplusProjectile << 698 do { << 699 // Sampling X's of the 2 quarks and 2 anti << 700 << 701 G4double Product = 1.0; << 702 for ( G4int iCase = 0; iCase < 2; ++iCase << 703 G4double x = 0.0, r = G4UniformRand(); << 704 if ( Alfa_R == 1.0 ) { << 705 if ( iCase == 0 ) { // first string << 706 x = std::sqrt( r ); << 707 } else { // second string << 708 x = 1.0 - std::sqrt( r ); << 709 } << 710 } else { << 711 x = sqr( std::sin( pi/2.0*r ) ); << 712 } << 713 G4int index = iCase*2; // 0 for the fir << 714 Quark_Xs[index] = x ; Quark_Xs[index+1] << 715 Product *= x*(1.0-x); << 716 } << 717 << 718 if ( Product == 0.0 ) continue; << 719 << 720 ++NumberOfTries; << 721 if ( NumberOfTries == 100*(NumberOfTries/1 << 722 // After a large number of tries, it is << 723 ScaleFactor /= 2.0; << 724 AveragePt2 *= ScaleFactor; << 725 } << 726 << 727 G4ThreeVector PtSum( 0.0, 0.0, 0.0 ); << 728 for( G4int i = 0; i < 4; ++i ) { << 729 Quark_Mom[i] = GaussianPt( AveragePt2, m << 730 PtSum += Quark_Mom[i]; << 731 } << 732 << 733 PtSum /= 4.0; << 734 for ( G4int i = 0; i < 4; ++i ) { << 735 Quark_Mom[i] -= PtSum; << 736 } << 737 << 738 Alfa = 0.0; Beta = 0.0; << 739 for ( G4int iCase = 0; iCase < 2; ++iCase << 740 G4int index = iCase * 2; << 741 for ( G4int i = 0; i < 2; ++i ) { << 742 G4double val = ( Quark_Mom[index+i]. << 743 if ( iCase == 0 ) { // first string << 744 Alfa += val; << 745 } else { // second strin << 746 Beta += val; << 747 } << 748 } << 749 } << 750 << 751 } while ( ( std::sqrt( Alfa ) + std::sqrt( B << 752 ++loopCounter < maxNumberOfLoops ) << 753 << 754 if ( loopCounter >= maxNumberOfLoops ) { << 755 return 99; // unsuccessfully ended, nothi << 756 } << 757 << 758 G4double DecayMomentum2 = sqr(common.S) + sq << 759 - 2.0*( common.S*( << 760 WminusTarget = ( common.S - Alfa + Beta + st << 761 WplusProjectile = common.SqrtS - Beta/Wminus << 762 << 763 for ( G4int iCase = 0; iCase < 2; ++iCase ) << 764 G4int index = iCase*2; // 0 for the first << 765 for ( G4int i = 0; i < 2; ++i ) { << 766 G4double w = WplusProjectile; / << 767 if ( iCase == 1 ) w = - WminusTarget; / << 768 G4double Pz = w * Quark_Xs[index+i] / 2. << 769 - ( Quark_Mom[index+i].mag << 770 ( 2.0 * w * Quark_Xs[ind << 771 Quark_Mom[index+i].setZ( Pz ); << 772 } << 773 } << 774 << 775 G4int CandidatsN = 0, CandAQ[9][2] = {}, Can 661 G4int CandidatsN = 0, CandAQ[9][2] = {}, CandQ[9][2] = {}; 776 G4int LeftAQ1 = 0, LeftAQ2 = 0, LeftQ1 = 0, 662 G4int LeftAQ1 = 0, LeftAQ2 = 0, LeftQ1 = 0, LeftQ2 = 0; 777 for ( G4int iAQ = 0; iAQ < 3; ++iAQ ) { // 663 for ( G4int iAQ = 0; iAQ < 3; ++iAQ ) { // index of the 3 constituent anti-quarks of the antibaryon projectile 778 for ( G4int iQ = 0; iQ < 3; ++iQ ) { // 664 for ( G4int iQ = 0; iQ < 3; ++iQ ) { // index of the 3 constituent quarks of the nucleon target 779 if ( -common.AQ[iAQ] == common.Q[iQ] ) { 665 if ( -common.AQ[iAQ] == common.Q[iQ] ) { // antiquark - quark that can annihilate 780 // Here "0", "1", "2" means, respectiv 666 // Here "0", "1", "2" means, respectively, "first", "second" and "third" constituent 781 // of the (anti-baryon) projectile or 667 // of the (anti-baryon) projectile or (nucleon) target. 782 if ( iAQ == 0 ) { CandAQ[CandidatsN][0 668 if ( iAQ == 0 ) { CandAQ[CandidatsN][0] = 1; CandAQ[CandidatsN][1] = 2; } 783 if ( iAQ == 1 ) { CandAQ[CandidatsN][0 669 if ( iAQ == 1 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 2; } 784 if ( iAQ == 2 ) { CandAQ[CandidatsN][0 670 if ( iAQ == 2 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 1; } 785 if ( iQ == 0 ) { CandQ[CandidatsN][0] 671 if ( iQ == 0 ) { CandQ[CandidatsN][0] = 1; CandQ[CandidatsN][1] = 2; } 786 if ( iQ == 1 ) { CandQ[CandidatsN][0] 672 if ( iQ == 1 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 2; } 787 if ( iQ == 2 ) { CandQ[CandidatsN][0] 673 if ( iQ == 2 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 1; } 788 ++CandidatsN; 674 ++CandidatsN; 789 } 675 } 790 } 676 } 791 } 677 } 792 678 793 if ( CandidatsN != 0 ) { 679 if ( CandidatsN != 0 ) { 794 G4int SampledCase = (G4int)G4RandFlat::sho << 680 G4int SampledCase = G4RandFlat::shootInt( G4long( CandidatsN ) ); 795 LeftAQ1 = common.AQ[ CandAQ[SampledCase][0 681 LeftAQ1 = common.AQ[ CandAQ[SampledCase][0] ]; 796 LeftAQ2 = common.AQ[ CandAQ[SampledCase][1 682 LeftAQ2 = common.AQ[ CandAQ[SampledCase][1] ]; 797 if ( G4UniformRand() < 0.5 ) { 683 if ( G4UniformRand() < 0.5 ) { 798 LeftQ1 = common.Q[ CandQ[SampledCase][0] 684 LeftQ1 = common.Q[ CandQ[SampledCase][0] ]; 799 LeftQ2 = common.Q[ CandQ[SampledCase][1] 685 LeftQ2 = common.Q[ CandQ[SampledCase][1] ]; 800 } else { 686 } else { 801 LeftQ2 = common.Q[ CandQ[SampledCase][0] 687 LeftQ2 = common.Q[ CandQ[SampledCase][0] ]; 802 LeftQ1 = common.Q[ CandQ[SampledCase][1] 688 LeftQ1 = common.Q[ CandQ[SampledCase][1] ]; 803 } 689 } 804 690 805 // Set the string properties 691 // Set the string properties 806 // An anti quark - quark pair can have the 692 // An anti quark - quark pair can have the quantum number of either a scalar meson 807 // or a vector meson: the last digit of th 693 // or a vector meson: the last digit of the PDG code is, respectively, 1 and 3. 808 // For simplicity only scalar is considere 694 // For simplicity only scalar is considered here. 809 G4int NewCode = 0, antiQuark = 0, quark = 695 G4int NewCode = 0, antiQuark = 0, quark = 0; 810 G4ParticleDefinition* TestParticle = nullp 696 G4ParticleDefinition* TestParticle = nullptr; 811 for ( G4int iString = 0; iString < 2; ++iS 697 for ( G4int iString = 0; iString < 2; ++iString ) { // Loop over the 2 string cases 812 if ( iString == 0 ) { 698 if ( iString == 0 ) { 813 antiQuark = LeftAQ1; quark = LeftQ1; 699 antiQuark = LeftAQ1; quark = LeftQ1; >> 700 projectile->SplitUp(); 814 projectile->SetFirstParton( antiQuark 701 projectile->SetFirstParton( antiQuark ); 815 projectile->SetSecondParton( quark ); 702 projectile->SetSecondParton( quark ); 816 projectile->SetStatus( 0 ); 703 projectile->SetStatus( 0 ); 817 } else { // iString == 1 704 } else { // iString == 1 818 quark = LeftQ2; antiQuark = LeftAQ2; 705 quark = LeftQ2; antiQuark = LeftAQ2; >> 706 target->SplitUp(); 819 target->SetFirstParton( quark ); 707 target->SetFirstParton( quark ); 820 target->SetSecondParton( antiQuark ); 708 target->SetSecondParton( antiQuark ); 821 target->SetStatus( 0 ); 709 target->SetStatus( 0 ); 822 } 710 } 823 G4int absAntiQuark = std::abs( antiQuark 711 G4int absAntiQuark = std::abs( antiQuark ), absQuark = std::abs( quark ); 824 G4double aKsi = G4UniformRand(); 712 G4double aKsi = G4UniformRand(); 825 if ( absAntiQuark == absQuark ) { 713 if ( absAntiQuark == absQuark ) { 826 if ( absAntiQuark != 3 ) { 714 if ( absAntiQuark != 3 ) { 827 NewCode = 111; // Pi0-meson 715 NewCode = 111; // Pi0-meson 828 if ( aKsi < 0.5 ) { 716 if ( aKsi < 0.5 ) { 829 NewCode = 221; // Eta -meso 717 NewCode = 221; // Eta -meson 830 if ( aKsi < 0.25 ) { 718 if ( aKsi < 0.25 ) { 831 NewCode = 331; // Eta'-meso 719 NewCode = 331; // Eta'-meson 832 } 720 } 833 } 721 } 834 } else { 722 } else { 835 NewCode = 221; // Eta -meso 723 NewCode = 221; // Eta -meson 836 if ( aKsi < 0.5 ) { 724 if ( aKsi < 0.5 ) { 837 NewCode = 331; // Eta'-meso 725 NewCode = 331; // Eta'-meson 838 } 726 } 839 } 727 } 840 } else { 728 } else { 841 if ( absAntiQuark > absQuark ) { 729 if ( absAntiQuark > absQuark ) { 842 NewCode = absAntiQuark*100 + absQuar 730 NewCode = absAntiQuark*100 + absQuark*10 + 1; NewCode *= absAntiQuark/antiQuark; 843 } else { 731 } else { 844 NewCode = absQuark*100 + absAntiQuar 732 NewCode = absQuark*100 + absAntiQuark*10 + 1; NewCode *= absQuark/quark; 845 } 733 } 846 } 734 } 847 TestParticle = G4ParticleTable::GetParti 735 TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode ); 848 if ( ! TestParticle ) return 99; // uns 736 if ( ! TestParticle ) return 99; // unsuccessfully ended, nothing else can be done 849 if ( iString == 0 ) { 737 if ( iString == 0 ) { 850 projectile->SetDefinition( TestParticl 738 projectile->SetDefinition( TestParticle ); 851 theParameters->SetProjMinDiffMass( 0.5 739 theParameters->SetProjMinDiffMass( 0.5 ); 852 theParameters->SetProjMinNonDiffMass( 740 theParameters->SetProjMinNonDiffMass( 0.5 ); 853 } else { // iString == 1 741 } else { // iString == 1 854 target->SetDefinition( TestParticle ); 742 target->SetDefinition( TestParticle ); 855 theParameters->SetTarMinDiffMass( 0.5 743 theParameters->SetTarMinDiffMass( 0.5 ); 856 theParameters->SetTarMinNonDiffMass( 0 744 theParameters->SetTarMinNonDiffMass( 0.5 ); 857 } 745 } 858 } // End of loop over the 2 string cases 746 } // End of loop over the 2 string cases 859 747 860 G4int QuarkOrder[2]; << 748 // Sampling kinematical properties: 1st string LeftAQ1-LeftQ1, 2nd string LeftAQ2-LeftQ2 >> 749 G4ThreeVector Quark_Mom[4]; >> 750 G4double ModMom2[4]; >> 751 G4double AveragePt2 = 200.0*200.0, maxPtSquare = common.S, SumMt = 0.0, MassQ2 = 0.0, >> 752 ScaleFactor = 1.0; >> 753 G4int NumberOfTries = 0, loopCounter = 0; >> 754 const G4int maxNumberOfLoops = 1000; >> 755 do { >> 756 ++NumberOfTries; >> 757 if ( NumberOfTries == 100*(NumberOfTries/100) ) { >> 758 // At large number of tries it would be better to reduce the values of <Pt^2> >> 759 ScaleFactor /= 2.0; >> 760 AveragePt2 *= ScaleFactor; >> 761 } >> 762 G4ThreeVector PtSum( 0.0, 0.0, 0.0 ); >> 763 for( G4int i = 0; i < 4; ++i ) { >> 764 Quark_Mom[i] = GaussianPt( AveragePt2, maxPtSquare ); >> 765 PtSum += Quark_Mom[i]; >> 766 } >> 767 PtSum /= 4.0; >> 768 SumMt = 0.0; >> 769 for ( G4int i = 0; i < 4; ++i ) { >> 770 Quark_Mom[i] -= PtSum; >> 771 ModMom2[i] = Quark_Mom[i].mag2(); >> 772 SumMt += std::sqrt( ModMom2[i] + MassQ2 ); >> 773 } >> 774 } while ( ( SumMt > common.SqrtS ) && >> 775 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */ >> 776 if ( loopCounter >= maxNumberOfLoops ) { >> 777 return 99; // unsuccessfully ended, nothing else can be done >> 778 } >> 779 >> 780 // Sampling X's of the two strings >> 781 G4double WminusTarget = 0.0, WplusProjectile = 0.0, Alfa_R = 0.5; ScaleFactor = 1.0; >> 782 G4bool Success = true; >> 783 NumberOfTries = 0, loopCounter = 0; >> 784 do { >> 785 Success = true; >> 786 ++NumberOfTries; >> 787 if ( NumberOfTries == 100*(NumberOfTries/100) ) { >> 788 // At large number of tries it would be better to reduce the values of Pt's >> 789 ScaleFactor /= 2.0; >> 790 } >> 791 G4double Alfa = 0.0, Beta = 0.0; >> 792 for ( G4int iCase = 0; iCase < 2; ++iCase ) { // Loop over the two strings >> 793 G4double x = 0.0, r = G4UniformRand(); >> 794 if ( Alfa_R == 1.0 ) { >> 795 if ( iCase == 0 ) { // first string >> 796 x = std::sqrt( r ); >> 797 } else { // second string >> 798 x = 1.0 - std::sqrt( r); >> 799 } >> 800 } else { >> 801 x = sqr( std::sin( pi/2.0*r ) ); >> 802 } >> 803 G4int index = iCase*2; // 0 for the first string, 2 for the second string >> 804 Quark_Mom[index].setZ( x ); Quark_Mom[index+1].setZ( 1.0 - x ); >> 805 for ( G4int i = 0; i < 2; ++i ) { >> 806 if ( Quark_Mom[i].getZ() != 0.0 ) { >> 807 G4double val = ( ScaleFactor * ModMom2[index+i] + MassQ2 ) / Quark_Mom[index+i].getZ(); >> 808 if ( iCase == 0 ) { // first string >> 809 Alfa += val; >> 810 } else { // second string >> 811 Beta += val; >> 812 } >> 813 } else { >> 814 Success = false; >> 815 } >> 816 } >> 817 } >> 818 if ( ! Success ) continue; >> 819 if ( std::sqrt( Alfa ) + std::sqrt( Beta ) > common.SqrtS ) { >> 820 Success = false; >> 821 continue; >> 822 } >> 823 G4double DecayMomentum2 = sqr(common.S) + sqr(Alfa) + sqr(Beta) >> 824 - 2.0*( common.S*(Alfa + Beta) + Alfa*Beta ); >> 825 WminusTarget = ( common.S - Alfa + Beta + std::sqrt( DecayMomentum2 ) ) / 2.0 / common.SqrtS; >> 826 WplusProjectile = common.SqrtS - Beta/WminusTarget; >> 827 } while ( ( ! Success ) && >> 828 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */ >> 829 if ( loopCounter >= maxNumberOfLoops ) { >> 830 return 99; // unsuccessfully ended, nothing else can be done >> 831 } >> 832 >> 833 G4double SqrtScaleF = std::sqrt( ScaleFactor ); 861 G4LorentzVector Pstring1, Pstring2; 834 G4LorentzVector Pstring1, Pstring2; 862 G4double Ystring1 = 0.0, Ystring2 = 0.0; 835 G4double Ystring1 = 0.0, Ystring2 = 0.0; 863 << 836 for ( G4int iCase = 0; iCase < 2; ++iCase ) { // Loop over the two strings >> 837 G4int index = iCase*2; // 0 for the first string, 2 for the second string >> 838 for ( G4int i = 0; i < 2; ++i ) { >> 839 G4double w = WplusProjectile; // For the first string >> 840 if ( iCase == 1 ) w = - WminusTarget; // For the second string >> 841 G4double Pz = w * Quark_Mom[index+i].getZ() / 2.0 >> 842 - ( ScaleFactor * ModMom2[index+i] + MassQ2 ) / >> 843 ( 2.0 * w * Quark_Mom[index+i].getZ() ); >> 844 Quark_Mom[index+i].setZ( Pz ); >> 845 if ( ScaleFactor != 1.0 ) { >> 846 Quark_Mom[index+i].setX( SqrtScaleF * Quark_Mom[index+i].getX() ); >> 847 Quark_Mom[index+i].setY( SqrtScaleF * Quark_Mom[index+i].getY() ); >> 848 } >> 849 } >> 850 } 864 for ( G4int iCase = 0; iCase < 2; ++iCase 851 for ( G4int iCase = 0; iCase < 2; ++iCase ) { // Loop over the two strings 865 G4ThreeVector tmp = Quark_Mom[iCase] + Q 852 G4ThreeVector tmp = Quark_Mom[iCase] + Quark_Mom[iCase+2]; 866 G4LorentzVector Pstring( tmp, std::sqrt( 853 G4LorentzVector Pstring( tmp, std::sqrt( Quark_Mom[iCase].mag2() + MassQ2 ) + 867 std::sqrt( 854 std::sqrt( Quark_Mom[iCase+2].mag2() + MassQ2 ) ); >> 855 //AR-Jun2018 if ( common.RotateStrings ) Pstring *= common.RandomRotation; 868 // Add protection for rapidity = 0.5*ln 856 // Add protection for rapidity = 0.5*ln( (E+Pz)/(E-Pz) ) 869 G4double Ystring = 0.0; 857 G4double Ystring = 0.0; 870 if ( Pstring.e() > 1.0e-30 ) { 858 if ( Pstring.e() > 1.0e-30 ) { 871 if ( Pstring.e() + Pstring.pz() < 1.0e 859 if ( Pstring.e() + Pstring.pz() < 1.0e-30 ) { // Very small numerator in the logarithm 872 Ystring = -1.0e30; // A very large 860 Ystring = -1.0e30; // A very large negative value (E ~= -Pz) 873 if ( Pstring.e() - Pstring.pz() < 1. 861 if ( Pstring.e() - Pstring.pz() < 1.0e-30 ) { // Very small denominator in the logarithm 874 Ystring = 1.0e30; // A very large 862 Ystring = 1.0e30; // A very large positive value (E ~= Pz) 875 } else { // Normal case 863 } else { // Normal case 876 Ystring = Pstring.rapidity(); 864 Ystring = Pstring.rapidity(); 877 } 865 } 878 } 866 } 879 } 867 } 880 if ( iCase == 0 ) { // For the first st 868 if ( iCase == 0 ) { // For the first string 881 Pstring1 = Pstring; Ystring1 = Ystring 869 Pstring1 = Pstring; Ystring1 = Ystring; 882 } else { // For the second s 870 } else { // For the second string 883 Pstring2 = Pstring; Ystring2 = Ystring 871 Pstring2 = Pstring; Ystring2 = Ystring; 884 } 872 } 885 } 873 } 886 if ( Ystring1 > Ystring2 ) { 874 if ( Ystring1 > Ystring2 ) { 887 common.Pprojectile = Pstring1; common.P 875 common.Pprojectile = Pstring1; common.Ptarget = Pstring2; 888 QuarkOrder[0] = 0; QuarkOrder[1] = 1; << 889 } else { 876 } else { 890 common.Pprojectile = Pstring2; common.P 877 common.Pprojectile = Pstring2; common.Ptarget = Pstring1; 891 QuarkOrder[0] = 1; QuarkOrder[1] = 0; << 892 } 878 } 893 879 894 if ( common.RotateStrings ) { << 880 if ( common.RotateStrings ) { //AR-Jun2018 895 common.Pprojectile *= common.RandomRotat 881 common.Pprojectile *= common.RandomRotation; 896 common.Ptarget *= common.RandomRotat 882 common.Ptarget *= common.RandomRotation; 897 } 883 } 898 884 899 common.Pprojectile.transform( common.toLab 885 common.Pprojectile.transform( common.toLab ); 900 common.Ptarget.transform( common.toLab ); 886 common.Ptarget.transform( common.toLab ); 901 << 902 G4LorentzVector Quark_4Mom[4]; << 903 for ( G4int i = 0; i < 4; ++i ) { << 904 Quark_4Mom[i] = G4LorentzVector( Quark_M << 905 if ( common.RotateStrings ) Quark_4Mom[i << 906 Quark_4Mom[i].transform( common.toLab ); << 907 } << 908 << 909 projectile->Splitting(); << 910 projectile->GetNextAntiParton()->Set4Momen << 911 projectile->GetNextParton()->Set4Momentum( << 912 << 913 target->Splitting(); << 914 target->GetNextParton()->Set4Momentum( Qua << 915 target->GetNextAntiParton()->Set4Momentum( << 916 887 917 // Calculation of the creation time 888 // Calculation of the creation time 918 // Creation time and position of target nu 889 // Creation time and position of target nucleon were determined in ReggeonCascade() of G4FTFModel 919 projectile->SetTimeOfCreation( target->Get 890 projectile->SetTimeOfCreation( target->GetTimeOfCreation() ); 920 projectile->SetPosition( target->GetPositi 891 projectile->SetPosition( target->GetPosition() ); 921 projectile->Set4Momentum( common.Pprojecti 892 projectile->Set4Momentum( common.Pprojectile ); 922 target->Set4Momentum( common.Ptarget ); 893 target->Set4Momentum( common.Ptarget ); 923 << 924 projectile->IncrementCollisionCount( 1 ); 894 projectile->IncrementCollisionCount( 1 ); 925 target->IncrementCollisionCount( 1 ); 895 target->IncrementCollisionCount( 1 ); 926 896 927 return 0; // Completed successfully: noth 897 return 0; // Completed successfully: nothing else to be done 928 } // End of if ( CandidatsN != 0 ) 898 } // End of if ( CandidatsN != 0 ) 929 899 930 return 1; // Successfully ended, but the wo 900 return 1; // Successfully ended, but the work is not over 931 } 901 } 932 902 933 << 934 //-------------------------------------------- 903 //----------------------------------------------------------------------- 935 904 936 G4bool G4FTFAnnihilation:: 905 G4bool G4FTFAnnihilation:: 937 Create1QuarkAntiQuarkString( G4VSplitableHadro 906 Create1QuarkAntiQuarkString( G4VSplitableHadron* projectile, 938 G4VSplitableHadro 907 G4VSplitableHadron* target, 939 G4FTFParameters* 908 G4FTFParameters* theParameters, 940 G4FTFAnnihilation 909 G4FTFAnnihilation::CommonVariables& common ) const { 941 // Simulation of anti-quark - quark string c 910 // Simulation of anti-quark - quark string creation 942 911 943 #ifdef debugFTFannih 912 #ifdef debugFTFannih 944 G4cout << "Process d, only 1 quark - anti-qu 913 G4cout << "Process d, only 1 quark - anti-quark string" << G4endl; 945 #endif 914 #endif 946 915 947 // Determine the set of candidates anti-quar 916 // Determine the set of candidates anti-quark - quark pairs that do not annihilate. 948 // Here "0", "1", "2" means, respectively, " 917 // Here "0", "1", "2" means, respectively, "first", "second" and "third" constituent 949 // of the (anti-baryon) projectile or (nucle 918 // of the (anti-baryon) projectile or (nucleon) target. 950 G4int CandidatsN = 0, CandAQ[36], CandQ[36]; 919 G4int CandidatsN = 0, CandAQ[36], CandQ[36]; 951 G4int LeftAQ = 0, LeftQ = 0; 920 G4int LeftAQ = 0, LeftQ = 0; 952 for ( G4int iAQ1 = 0; iAQ1 < 3; ++iAQ1 ) { 921 for ( G4int iAQ1 = 0; iAQ1 < 3; ++iAQ1 ) { 953 for ( G4int iAQ2 = 0; iAQ2 < 3; ++iAQ2 ) { 922 for ( G4int iAQ2 = 0; iAQ2 < 3; ++iAQ2 ) { 954 if ( iAQ1 != iAQ2 ) { 923 if ( iAQ1 != iAQ2 ) { 955 for ( G4int iQ1 = 0; iQ1 < 3; ++iQ1 ) 924 for ( G4int iQ1 = 0; iQ1 < 3; ++iQ1 ) { 956 for ( G4int iQ2 = 0; iQ2 < 3; ++iQ2 925 for ( G4int iQ2 = 0; iQ2 < 3; ++iQ2 ) { 957 if ( iQ1 != iQ2 ) { 926 if ( iQ1 != iQ2 ) { 958 if ( -common.AQ[iAQ1] == common. 927 if ( -common.AQ[iAQ1] == common.Q[iQ1] && -common.AQ[iAQ2] == common.Q[iQ2] ) { 959 if ( ( iAQ1 == 0 && i 928 if ( ( iAQ1 == 0 && iAQ2 == 1 ) || ( iAQ1 == 1 && iAQ2 == 0 ) ) { 960 CandAQ[CandidatsN] = 2; 929 CandAQ[CandidatsN] = 2; 961 } else if ( ( iAQ1 == 0 && i 930 } else if ( ( iAQ1 == 0 && iAQ2 == 2 ) || ( iAQ1 == 2 && iAQ2 == 0 ) ) { 962 CandAQ[CandidatsN] = 1; 931 CandAQ[CandidatsN] = 1; 963 } else if ( ( iAQ1 == 1 && i 932 } else if ( ( iAQ1 == 1 && iAQ2 == 2 ) || ( iAQ1 == 2 && iAQ2 == 1 ) ) { 964 CandAQ[CandidatsN] = 0; 933 CandAQ[CandidatsN] = 0; 965 } 934 } 966 if ( ( iQ1 == 0 && 935 if ( ( iQ1 == 0 && iQ2 == 1 ) || ( iQ1 == 1 && iQ2 == 0 ) ) { 967 CandQ[CandidatsN] = 2; 936 CandQ[CandidatsN] = 2; 968 } else if ( ( iQ1 == 0 && 937 } else if ( ( iQ1 == 0 && iQ2 == 2 ) || ( iQ1 == 2 && iQ2 == 0 ) ) { 969 CandQ[CandidatsN] = 1; 938 CandQ[CandidatsN] = 1; 970 } else if ( ( iQ1 == 1 && 939 } else if ( ( iQ1 == 1 && iQ2 == 2 ) || ( iQ1 == 2 && iQ2 == 1 ) ) { 971 CandQ[CandidatsN] = 0; 940 CandQ[CandidatsN] = 0; 972 } 941 } 973 ++CandidatsN; 942 ++CandidatsN; 974 } 943 } 975 } 944 } 976 } 945 } 977 } 946 } 978 } 947 } 979 } 948 } 980 } 949 } 981 950 982 if ( CandidatsN != 0 ) { 951 if ( CandidatsN != 0 ) { 983 G4int SampledCase = (G4int)G4RandFlat::sho << 952 G4int SampledCase = G4RandFlat::shootInt( G4long( CandidatsN ) ); 984 LeftAQ = common.AQ[ CandAQ[SampledCase] ]; 953 LeftAQ = common.AQ[ CandAQ[SampledCase] ]; 985 LeftQ = common.Q[ CandQ[SampledCase] ]; 954 LeftQ = common.Q[ CandQ[SampledCase] ]; 986 955 987 // Set the string properties 956 // Set the string properties >> 957 projectile->SplitUp(); 988 projectile->SetFirstParton( LeftQ ); 958 projectile->SetFirstParton( LeftQ ); 989 projectile->SetSecondParton( LeftAQ ); 959 projectile->SetSecondParton( LeftAQ ); 990 projectile->SetStatus( 0 ); 960 projectile->SetStatus( 0 ); 991 G4int aAQ = std::abs( LeftAQ ), aQ = std:: 961 G4int aAQ = std::abs( LeftAQ ), aQ = std::abs( LeftQ ); 992 G4int NewCode = 0; 962 G4int NewCode = 0; 993 G4double aKsi = G4UniformRand(); 963 G4double aKsi = G4UniformRand(); 994 // The string can have the quantum number 964 // The string can have the quantum number of either a scalar or a vector (whose last digit 995 // of the PDG code is, respectively, 1 and 965 // of the PDG code is, respectively, 1 and 3). For simplicity only scalar is considered here. 996 if ( aAQ == aQ ) { 966 if ( aAQ == aQ ) { 997 if ( aAQ != 3 ) { 967 if ( aAQ != 3 ) { 998 NewCode = 111; // Pi0-meson 968 NewCode = 111; // Pi0-meson 999 if ( aKsi < 0.5 ) { 969 if ( aKsi < 0.5 ) { 1000 NewCode = 221; // Eta -meson 970 NewCode = 221; // Eta -meson 1001 if ( aKsi < 0.25 ) { 971 if ( aKsi < 0.25 ) { 1002 NewCode = 331; // Eta'-meson 972 NewCode = 331; // Eta'-meson 1003 } 973 } 1004 } 974 } 1005 } else { 975 } else { 1006 NewCode = 221; // Eta -meson 976 NewCode = 221; // Eta -meson 1007 if ( aKsi < 0.5 ) { 977 if ( aKsi < 0.5 ) { 1008 NewCode = 331; // Eta'-meson 978 NewCode = 331; // Eta'-meson 1009 } 979 } 1010 } 980 } 1011 } else { 981 } else { 1012 if ( aAQ > aQ ) { 982 if ( aAQ > aQ ) { 1013 NewCode = aAQ*100 + aQ*10 + 1; NewCod 983 NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/LeftAQ; 1014 } else { 984 } else { 1015 NewCode = aQ*100 + aAQ*10 + 1; NewCod 985 NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/LeftQ; 1016 } 986 } 1017 } 987 } 1018 988 1019 G4ParticleDefinition* TestParticle = G4Pa 989 G4ParticleDefinition* TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode ); 1020 if ( ! TestParticle ) return false; 990 if ( ! TestParticle ) return false; 1021 projectile->SetDefinition( TestParticle ) 991 projectile->SetDefinition( TestParticle ); 1022 theParameters->SetProjMinDiffMass( 0.5 ); 992 theParameters->SetProjMinDiffMass( 0.5 ); 1023 theParameters->SetProjMinNonDiffMass( 0.5 993 theParameters->SetProjMinNonDiffMass( 0.5 ); 1024 994 1025 target->SetStatus( 4 ); // The target nu 995 target->SetStatus( 4 ); // The target nucleon has annihilated 3->4 1026 common.Pprojectile.setPx( 0.0 ); 996 common.Pprojectile.setPx( 0.0 ); 1027 common.Pprojectile.setPy( 0.0 ); 997 common.Pprojectile.setPy( 0.0 ); 1028 common.Pprojectile.setPz( 0.0 ); 998 common.Pprojectile.setPz( 0.0 ); 1029 common.Pprojectile.setE( common.SqrtS ); 999 common.Pprojectile.setE( common.SqrtS ); 1030 << 1031 common.Pprojectile.transform( common.toLa 1000 common.Pprojectile.transform( common.toLab ); 1032 1001 1033 G4LorentzVector Pquark = G4LorentzVector << 1002 G4LorentzVector Pquark = G4LorentzVector( 0.0, 0.0, common.SqrtS/2.0, common.SqrtS/2.0 ); 1034 G4LorentzVector Paquark = G4LorentzVector << 1003 G4LorentzVector Paquark = G4LorentzVector( 0.0, 0.0, -common.SqrtS/2.0, common.SqrtS/2.0 ); 1035 << 1036 if ( common.RotateStrings ) { 1004 if ( common.RotateStrings ) { 1037 Pquark *= common.RandomRotation; Paquar 1005 Pquark *= common.RandomRotation; Paquark *= common.RandomRotation; 1038 } 1006 } 1039 Pquark.transform(common.toLab); projecti 1007 Pquark.transform(common.toLab); projectile->GetNextParton()->Set4Momentum(Pquark); 1040 Paquark.transform(common.toLab); projecti 1008 Paquark.transform(common.toLab); projectile->GetNextAntiParton()->Set4Momentum(Paquark); 1041 1009 1042 projectile->Splitting(); << 1043 << 1044 // Calculation of the creation time 1010 // Calculation of the creation time 1045 // Creation time and position of target n 1011 // Creation time and position of target nucleon were determined in ReggeonCascade() of G4FTFModel 1046 projectile->SetTimeOfCreation( target->Ge 1012 projectile->SetTimeOfCreation( target->GetTimeOfCreation() ); 1047 projectile->SetPosition( target->GetPosit 1013 projectile->SetPosition( target->GetPosition() ); 1048 projectile->Set4Momentum( common.Pproject 1014 projectile->Set4Momentum( common.Pprojectile ); 1049 << 1050 projectile->IncrementCollisionCount( 1 ); 1015 projectile->IncrementCollisionCount( 1 ); 1051 target->IncrementCollisionCount( 1 ); 1016 target->IncrementCollisionCount( 1 ); 1052 1017 1053 return true; 1018 return true; 1054 } // End of if ( CandidatsN != 0 ) 1019 } // End of if ( CandidatsN != 0 ) 1055 1020 1056 return true; 1021 return true; 1057 } 1022 } 1058 1023 1059 1024 1060 //=========================================== 1025 //============================================================================ 1061 1026 1062 G4double G4FTFAnnihilation::ChooseX( G4double 1027 G4double G4FTFAnnihilation::ChooseX( G4double /* Alpha */, G4double /* Beta */ ) const { 1063 // If for sampling Xs other values of Alfa 1028 // If for sampling Xs other values of Alfa and Beta instead of 0.5 will be 1064 // chosen the method will be implemented 1029 // chosen the method will be implemented 1065 //G4double tmp = Alpha*Beta; 1030 //G4double tmp = Alpha*Beta; 1066 //tmp *= 1.0; 1031 //tmp *= 1.0; 1067 return 0.5; 1032 return 0.5; 1068 } 1033 } 1069 1034 1070 1035 1071 //=========================================== 1036 //============================================================================ 1072 1037 1073 G4ThreeVector G4FTFAnnihilation::GaussianPt( 1038 G4ThreeVector G4FTFAnnihilation::GaussianPt( G4double AveragePt2, G4double maxPtSquare ) const { 1074 // @@ this method is used in FTFModel as w 1039 // @@ this method is used in FTFModel as well. Should go somewhere common! 1075 G4double Pt2 = 0.0; 1040 G4double Pt2 = 0.0; 1076 if ( AveragePt2 <= 0.0 ) { 1041 if ( AveragePt2 <= 0.0 ) { 1077 Pt2 = 0.0; 1042 Pt2 = 0.0; 1078 } else { 1043 } else { 1079 Pt2 = -AveragePt2 * G4Log( 1.0 + G4Unifor 1044 Pt2 = -AveragePt2 * G4Log( 1.0 + G4UniformRand() * 1080 ( G4E 1045 ( G4Exp( -maxPtSquare/AveragePt2 ) -1.0 ) ); 1081 } 1046 } 1082 G4double Pt = std::sqrt( Pt2 ); 1047 G4double Pt = std::sqrt( Pt2 ); 1083 G4double phi = G4UniformRand() * twopi; 1048 G4double phi = G4UniformRand() * twopi; 1084 return G4ThreeVector ( Pt*std::cos( phi ), 1049 return G4ThreeVector ( Pt*std::cos( phi ), Pt*std::sin( phi ), 0.0 ); 1085 } 1050 } 1086 1051 1087 1052 1088 //=========================================== 1053 //============================================================================ 1089 1054 1090 void G4FTFAnnihilation::UnpackBaryon( G4int I 1055 void G4FTFAnnihilation::UnpackBaryon( G4int IdPDG, G4int& Q1, G4int& Q2, G4int& Q3 ) const { 1091 G4int AbsId = std::abs( IdPDG ); 1056 G4int AbsId = std::abs( IdPDG ); 1092 Q1 = AbsId / 1000; 1057 Q1 = AbsId / 1000; 1093 Q2 = ( AbsId % 1000 ) / 100; 1058 Q2 = ( AbsId % 1000 ) / 100; 1094 Q3 = ( AbsId % 100 ) / 10; 1059 Q3 = ( AbsId % 100 ) / 10; 1095 if ( IdPDG < 0 ) { Q1 = -Q1; Q2 = -Q2; Q3 = 1060 if ( IdPDG < 0 ) { Q1 = -Q1; Q2 = -Q2; Q3 = -Q3; } // Anti-baryon 1096 return; 1061 return; 1097 } 1062 } 1098 1063 1099 1064 1100 //=========================================== 1065 //============================================================================ 1101 1066 1102 G4FTFAnnihilation::G4FTFAnnihilation( const G 1067 G4FTFAnnihilation::G4FTFAnnihilation( const G4FTFAnnihilation& ) { 1103 throw G4HadronicException( __FILE__, __LINE 1068 throw G4HadronicException( __FILE__, __LINE__, 1104 "G4FTFAnnihilati 1069 "G4FTFAnnihilation copy constructor not meant to be called" ); 1105 } 1070 } 1106 1071 1107 1072 1108 //=========================================== 1073 //============================================================================ 1109 1074 1110 const G4FTFAnnihilation & G4FTFAnnihilation:: 1075 const G4FTFAnnihilation & G4FTFAnnihilation::operator=( const G4FTFAnnihilation& ) { 1111 throw G4HadronicException( __FILE__, __LINE 1076 throw G4HadronicException( __FILE__, __LINE__, 1112 "G4FTFAnnihilati 1077 "G4FTFAnnihilation = operator not meant to be called" ); 1113 } 1078 } 1114 1079 1115 1080 1116 //=========================================== 1081 //============================================================================ 1117 1082 1118 G4bool G4FTFAnnihilation::operator==( const G 1083 G4bool G4FTFAnnihilation::operator==( const G4FTFAnnihilation& ) const { 1119 throw G4HadronicException( __FILE__, __LINE 1084 throw G4HadronicException( __FILE__, __LINE__, 1120 "G4FTFAnnihilati 1085 "G4FTFAnnihilation == operator not meant to be called" ); 1121 } 1086 } 1122 1087 1123 1088 1124 //=========================================== 1089 //============================================================================ 1125 1090 1126 G4bool G4FTFAnnihilation::operator!=( const G 1091 G4bool G4FTFAnnihilation::operator!=( const G4FTFAnnihilation& ) const { 1127 throw G4HadronicException( __FILE__, __LINE 1092 throw G4HadronicException( __FILE__, __LINE__, 1128 "G4DiffractiveEx 1093 "G4DiffractiveExcitation != operator not meant to be called" ); 1129 } 1094 } >> 1095 1130 1096