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26 // 26 //
>> 27 // $Id: G4FTFAnnihilation.cc 97625 2016-06-06 13:35:58Z gcosmo $
27 // 28 //
28 29
29 // ------------------------------------------- 30 // ------------------------------------------------------------
30 // GEANT 4 class implemetation file 31 // GEANT 4 class implemetation file
31 // 32 //
32 // ---------------- G4FTFAnnihilation --- 33 // ---------------- G4FTFAnnihilation --------------
33 // by V. Uzhinsky, Spring 2011. 34 // by V. Uzhinsky, Spring 2011.
34 // Take a projectile and a targ 35 // Take a projectile and a target
35 // make annihilation or re-orangement o 36 // make annihilation or re-orangement of quarks and anti-quarks.
36 // Ideas of Quark-Gluon-String model my A. 37 // Ideas of Quark-Gluon-String model my A. Capella and A.B. Kaidalov
37 // are implemented. 38 // are implemented.
38 // ------------------------------------------- 39 // ---------------------------------------------------------------------
39 40
40 #include "globals.hh" 41 #include "globals.hh"
41 #include "Randomize.hh" 42 #include "Randomize.hh"
42 #include "G4PhysicalConstants.hh" 43 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh" 44 #include "G4SystemOfUnits.hh"
44 45
45 #include "G4DiffractiveSplitableHadron.hh" 46 #include "G4DiffractiveSplitableHadron.hh"
46 #include "G4DiffractiveExcitation.hh" 47 #include "G4DiffractiveExcitation.hh"
47 #include "G4FTFParameters.hh" 48 #include "G4FTFParameters.hh"
48 #include "G4ElasticHNScattering.hh" 49 #include "G4ElasticHNScattering.hh"
49 #include "G4FTFAnnihilation.hh" 50 #include "G4FTFAnnihilation.hh"
50 51
51 #include "G4LorentzRotation.hh" 52 #include "G4LorentzRotation.hh"
52 #include "G4RotationMatrix.hh" 53 #include "G4RotationMatrix.hh"
53 #include "G4ThreeVector.hh" 54 #include "G4ThreeVector.hh"
54 #include "G4ParticleDefinition.hh" 55 #include "G4ParticleDefinition.hh"
55 #include "G4VSplitableHadron.hh" 56 #include "G4VSplitableHadron.hh"
56 #include "G4ExcitedString.hh" 57 #include "G4ExcitedString.hh"
57 #include "G4ParticleTable.hh" 58 #include "G4ParticleTable.hh"
58 #include "G4Neutron.hh" 59 #include "G4Neutron.hh"
59 #include "G4ParticleDefinition.hh" 60 #include "G4ParticleDefinition.hh"
60 61
61 #include "G4Exp.hh" 62 #include "G4Exp.hh"
62 #include "G4Log.hh" 63 #include "G4Log.hh"
63 #include "G4Pow.hh" 64 #include "G4Pow.hh"
64 65
>> 66 //#include "G4ios.hh"
65 //#include "UZHI_diffraction.hh" 67 //#include "UZHI_diffraction.hh"
66 68
67 #include "G4ParticleTable.hh" << 69 #include "G4ParticleTable.hh" // Uzhi March 2016
68 <<
69 //============================================ 70 //============================================================================
70 71
71 //#define debugFTFannih 72 //#define debugFTFannih
72 73
73 74
74 //============================================ 75 //============================================================================
75 76
76 G4FTFAnnihilation::G4FTFAnnihilation() {} 77 G4FTFAnnihilation::G4FTFAnnihilation() {}
77 78
78 79
79 //============================================ 80 //============================================================================
80 81
81 G4FTFAnnihilation::~G4FTFAnnihilation() {} 82 G4FTFAnnihilation::~G4FTFAnnihilation() {}
82 83
83 84
84 //============================================ 85 //============================================================================
85 86
86 G4bool G4FTFAnnihilation::Annihilate( G4VSplit 87 G4bool G4FTFAnnihilation::Annihilate( G4VSplitableHadron* projectile,
87 G4VSplit 88 G4VSplitableHadron* target,
88 G4VSplit 89 G4VSplitableHadron*& AdditionalString,
89 G4FTFPar 90 G4FTFParameters* theParameters ) const {
90 91
>> 92 //theParameters->SetProbabilityOfAnnihilation( 0.0 ); // Uzhi March 2016 ??? for other Anti_bar annih.
>> 93
91 #ifdef debugFTFannih 94 #ifdef debugFTFannih
92 G4cout << "---------------------------- Anni 95 G4cout << "---------------------------- Annihilation----------------" << G4endl;
93 #endif 96 #endif
94 97
95 CommonVariables common; <<
96 <<
97 // Projectile parameters 98 // Projectile parameters
98 common.Pprojectile = projectile->Get4Momentu << 99 G4LorentzVector Pprojectile = projectile->Get4Momentum();
99 G4int ProjectilePDGcode = projectile->GetDef 100 G4int ProjectilePDGcode = projectile->GetDefinition()->GetPDGEncoding();
100 if ( ProjectilePDGcode > 0 ) { 101 if ( ProjectilePDGcode > 0 ) {
101 target->SetStatus( 3 ); << 102 target->SetStatus( 3 ); // 2->3 Uzhi Oct 2014
102 return false; 103 return false;
103 } 104 }
104 G4double M0projectile2 = common.Pprojectile. << 105 //G4double M0projectile = Pprojectile.mag();
>> 106 //G4double M0projectile2 = projectile->GetDefinition()->GetPDGMass() *
>> 107 // projectile->GetDefinition()->GetPDGMass();
>> 108 G4double M0projectile2 = Pprojectile.mag2();
105 109
106 // Target parameters 110 // Target parameters
107 G4int TargetPDGcode = target->GetDefinition( 111 G4int TargetPDGcode = target->GetDefinition()->GetPDGEncoding();
108 common.Ptarget = target->Get4Momentum(); << 112 G4LorentzVector Ptarget = target->Get4Momentum();
109 G4double M0target2 = common.Ptarget.mag2(); << 113 //G4double M0target = Ptarget.mag();
>> 114 //G4double M0target2 = target->GetDefinition()->GetPDGMass() *
>> 115 // target->GetDefinition()->GetPDGMass();
>> 116 G4double M0target2 = Ptarget.mag2();
110 117
111 #ifdef debugFTFannih 118 #ifdef debugFTFannih
112 G4cout << "PDG codes " << ProjectilePDGcode 119 G4cout << "PDG codes " << ProjectilePDGcode << " " << TargetPDGcode << G4endl
113 << "Pprojec " << common.Pprojectile < << 120 << "Pprojec " << Pprojectile << " " << Pprojectile.mag() << G4endl
114 << "Ptarget " << common.Ptarget << << 121 << "Ptarget " << Ptarget << " " << Ptarget.mag() << G4endl
115 << "M0 proj target " << std::sqrt( M0 122 << "M0 proj target " << std::sqrt( M0projectile2 )
116 << " " << std::sqrt( M0target2 ) << G 123 << " " << std::sqrt( M0target2 ) << G4endl;
117 #endif 124 #endif
118 125
>> 126 G4double AveragePt2 = theParameters->GetAveragePt2();
>> 127
119 // Kinematical properties of the interaction 128 // Kinematical properties of the interactions
120 G4LorentzVector Psum = common.Pprojectile + << 129 G4LorentzVector Psum; // 4-momentum in CMS
121 common.S = Psum.mag2(); << 130 Psum = Pprojectile + Ptarget;
122 common.SqrtS = std::sqrt( common.S ); << 131 G4double S = Psum.mag2();
>> 132
123 #ifdef debugFTFannih 133 #ifdef debugFTFannih
124 G4cout << "Psum SqrtS S " << Psum << " " << << 134 G4cout << "Psum SqrtS S " << Psum << " " << std::sqrt( S ) << " " << S << G4endl;
125 #endif 135 #endif
126 136
127 // Transform momenta to cms and then rotate 137 // Transform momenta to cms and then rotate parallel to z axis
128 G4LorentzRotation toCms( -1*Psum.boostVector 138 G4LorentzRotation toCms( -1*Psum.boostVector() );
129 G4LorentzVector Ptmp( toCms*common.Pprojecti << 139 G4LorentzVector Ptmp = toCms*Pprojectile;
130 toCms.rotateZ( -1*Ptmp.phi() ); 140 toCms.rotateZ( -1*Ptmp.phi() );
131 toCms.rotateY( -1*Ptmp.theta() ); 141 toCms.rotateY( -1*Ptmp.theta() );
132 common.toLab = toCms.inverse(); << 142 G4LorentzRotation toLab( toCms.inverse() );
133 143
134 if ( G4UniformRand() <= G4Pow::GetInstance() << 144 G4double SqrtS = std::sqrt( S );
135 common.RotateStrings = true; << 145 G4double maxPtSquare;
136 common.RandomRotation.rotateZ( 2.0*pi*G4Un << 146 G4double X_a( 0.0 ), X_b( 0.0 ), X_c( 0.0 ), X_d( 0.0 );
137 common.RandomRotation.rotateY( std::acos( <<
138 common.RandomRotation.rotateZ( 2.0*pi*G4Un <<
139 } <<
140 147
141 G4double MesonProdThreshold = projectile->Ge 148 G4double MesonProdThreshold = projectile->GetDefinition()->GetPDGMass() +
142 target->GetDef 149 target->GetDefinition()->GetPDGMass() +
143 ( 2.0*140.0 + 150 ( 2.0*140.0 + 16.0 )*MeV; // 2 Mpi + DeltaE
144 G4double Prel2 = sqr(common.S) + sqr(M0proje << 151 G4double Prel2 = S*S + M0projectile2*M0projectile2 + M0target2*M0target2 -
145 - 2.0*( common.S*(M0project << 152 2.0*S*M0projectile2 - 2.0*S*M0target2 - 2.0*M0projectile2*M0target2;
146 Prel2 /= common.S; << 153 Prel2 /= S;
147 G4double X_a = 0.0, X_b = 0.0, X_c = 0.0, X_ << 154 //G4cout << "Prel2 " << Prel2 << G4endl;
148 if ( Prel2 <= 0.0 ) { << 155 if ( Prel2 <= 0.0 ) { // *MeV*MeV 1600.
149 // Annihilation at rest! Values are copied 156 // Annihilation at rest! Values are copied from Parameters
150 X_a = 625.1; // mb // 3-shirt diagram << 157 X_a = 625.1; // mb // 3-shirt diagram
151 X_b = 0.0; // mb // anti-quark-quark << 158 X_b = 0.0; // 9.780 12 Dec. 2012; // mb // anti-quark-quark annihilation
152 X_c = 49.989; // mb // 2 Q-Qbar string << 159 X_c = 49.989; // mb
153 X_d = 6.614; // mb // One Q-Qbar strin << 160 X_d = 6.614; // mb
>> 161
154 #ifdef debugFTFannih 162 #ifdef debugFTFannih
155 G4cout << "Annih at Rest X a b c d " << X_ 163 G4cout << "Annih at Rest X a b c d " << X_a << " " << X_b << " " << X_c << " " << X_d
156 << G4endl; 164 << G4endl;
157 #endif 165 #endif
>> 166
158 } else { // Annihilation in flight! 167 } else { // Annihilation in flight!
159 G4double FlowF = 1.0 / std::sqrt( Prel2 )* 168 G4double FlowF = 1.0 / std::sqrt( Prel2 )*GeV;
>> 169
160 // Process cross sections 170 // Process cross sections
161 X_a = 25.0*FlowF; // mb 3-shirt diagram 171 X_a = 25.0*FlowF; // mb 3-shirt diagram
162 if ( common.SqrtS < MesonProdThreshold ) { << 172 if ( SqrtS < MesonProdThreshold ) {
163 X_b = 3.13 + 140.0*G4Pow::GetInstance()- << 173 X_b = 3.13 + 140.0*G4Pow::GetInstance()->powA( ( MesonProdThreshold - SqrtS )/GeV, 2.5 );
164 } else { 174 } else {
165 X_b = 6.8*GeV / common.SqrtS; // mb ant << 175 X_b = 6.8*GeV / SqrtS; // mb anti-quark-quark annihilation
166 } 176 }
167 if ( projectile->GetDefinition()->GetPDGMa 177 if ( projectile->GetDefinition()->GetPDGMass() + target->GetDefinition()->GetPDGMass()
168 > common.SqrtS ) { << 178 > SqrtS ) {
169 X_b = 0.0; 179 X_b = 0.0;
170 } 180 }
171 // This can be in an interaction of low en 181 // 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 182 X_c = 2.0 * FlowF * sqr( projectile->GetDefinition()->GetPDGMass() +
173 target->GetDefini << 183 target->GetDefinition()->GetPDGMass() ) / S; // mb re-arrangement of
174 << 184 // 2 quarks and 2 anti-quarks
175 X_d = 23.3*GeV*GeV / common.S; // mb anti- << 185 X_d = 23.3*GeV*GeV / S; // mb anti-quark-quark string creation
>> 186
176 #ifdef debugFTFannih 187 #ifdef debugFTFannih
177 G4cout << "Annih in Flight X a b c d " << 188 G4cout << "Annih in Flight X a b c d " << X_a << " " << X_b << " " << X_c << " " << X_d
178 << G4endl << "SqrtS MesonProdThresh << 189 << G4endl << "SqrtS MesonProdThreshold " << SqrtS << " " << MesonProdThreshold
179 << G4endl; 190 << G4endl;
180 #endif 191 #endif
>> 192
181 } 193 }
182 194
183 G4bool isUnknown = false; << 195 if ((ProjectilePDGcode == -2212 || ProjectilePDGcode == -2214)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
184 if ( TargetPDGcode == 2212 || TargetPDGcod << 196 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // Pbar P
185 if ( ProjectilePDGcode == -2212 || << 197 } else if ((ProjectilePDGcode == -2212 || ProjectilePDGcode == -2214)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
186 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // << 198 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // Pbar N
187 } else if ( ProjectilePDGcode == -2112 || << 199 } else if ((ProjectilePDGcode == -2112 || ProjectilePDGcode == -2114)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
188 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // << 200 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // NeutrBar P
189 } else if ( ProjectilePDGcode == -3122 ) { << 201 } else if ((ProjectilePDGcode == -2112 || ProjectilePDGcode == -2114)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
190 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // << 202 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // NeutrBar N
191 } else if ( ProjectilePDGcode == -3112 ) { << 203 } else if ((ProjectilePDGcode == -3122 || ProjectilePDGcode == -3124)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
192 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // << 204 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // LambdaBar P
193 } else if ( ProjectilePDGcode == -3212 ) { << 205 } else if ((ProjectilePDGcode == -3122 || ProjectilePDGcode == -3124)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
194 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // << 206 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // LambdaBar N
195 } else if ( ProjectilePDGcode == -3222 ) { << 207 } else if ((ProjectilePDGcode == -3112 || ProjectilePDGcode == -3114)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
196 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // << 208 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Sigma-Bar P
197 } else if ( ProjectilePDGcode == -3312 ) { << 209 } else if ((ProjectilePDGcode == -3112 || ProjectilePDGcode == -3114)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
198 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // << 210 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // Sigma-Bar N
199 } else if ( ProjectilePDGcode == -3322 ) { << 211 } else if ((ProjectilePDGcode == -3212 || ProjectilePDGcode == -3214)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
200 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // << 212 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // Sigma0Bar P
201 } else if ( ProjectilePDGcode == -3334 ) { << 213 } else if ((ProjectilePDGcode == -3212 || ProjectilePDGcode == -3214)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
202 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // << 214 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // Sigma0Bar N
203 } else { << 215 } else if ((ProjectilePDGcode == -3222 || ProjectilePDGcode == -3224)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
204 isUnknown = true; << 216 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // Sigma+Bar P
205 } << 217 } else if ((ProjectilePDGcode == -3222 || ProjectilePDGcode == -3224)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
206 } else if ( TargetPDGcode == 2112 || Targe << 218 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Sigma+Bar N
207 if ( ProjectilePDGcode == -2212 || << 219 } else if ((ProjectilePDGcode == -3312 || ProjectilePDGcode == -3314)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
208 X_b *= 4.0; X_c *= 4.0; X_d *= 4.0; // << 220 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // Xi-Bar P
209 } else if ( ProjectilePDGcode == -2112 || << 221 } else if ((ProjectilePDGcode == -3312 || ProjectilePDGcode == -3314)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
210 X_b *= 5.0; X_c *= 5.0; X_d *= 6.0; // << 222 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Xi-Bar N
211 } else if ( ProjectilePDGcode == -3122 ) { << 223 } else if ((ProjectilePDGcode == -3322 || ProjectilePDGcode == -3324)&& ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
212 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // << 224 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // Xi0Bar P
213 } else if ( ProjectilePDGcode == -3112 ) { << 225 } else if ((ProjectilePDGcode == -3322 || ProjectilePDGcode == -3324)&& ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
214 X_b *= 4.0; X_c *= 4.0; X_d *= 2.0; // << 226 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // Xi0Bar N
215 } else if ( ProjectilePDGcode == -3212 ) { << 227 } else if ( ProjectilePDGcode == -3334 && ( TargetPDGcode == 2212 || TargetPDGcode == 2214 ) ) {
216 X_b *= 3.0; X_c *= 3.0; X_d *= 2.0; // << 228 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // Omega-Bar P
217 } else if ( ProjectilePDGcode == -3222 ) { << 229 } else if ( ProjectilePDGcode == -3334 && ( TargetPDGcode == 2112 || TargetPDGcode == 2114 ) ) {
218 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // << 230 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // Omega-Bar N
219 } else if ( ProjectilePDGcode == -3312 ) { <<
220 X_b *= 2.0; X_c *= 2.0; X_d *= 0.0; // <<
221 } else if ( ProjectilePDGcode == -3322 ) { <<
222 X_b *= 1.0; X_c *= 1.0; X_d *= 0.0; // <<
223 } else if ( ProjectilePDGcode == -3334 ) { <<
224 X_b *= 0.0; X_c *= 0.0; X_d *= 0.0; // <<
225 } else { <<
226 isUnknown = true; <<
227 } <<
228 } else { 231 } else {
229 isUnknown = true; <<
230 } <<
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 }
235 235
236 #ifdef debugFTFannih 236 #ifdef debugFTFannih
237 G4cout << "Annih Actual X a b c d " << X_a < 237 G4cout << "Annih Actual X a b c d " << X_a << " " << X_b << " " << X_c << " " << X_d << G4endl;
238 #endif 238 #endif
239 239
240 G4double Xannihilation = X_a + X_b + X_c + X 240 G4double Xannihilation = X_a + X_b + X_c + X_d;
>> 241 //X_a=0.; // Uzhi
>> 242 //X_b=0.;
>> 243 //X_c=0.;
>> 244 //X_d=0.;
>> 245 //Xannihilation = X_a + X_b + X_c + X_d;
241 246
242 // Projectile unpacking 247 // Projectile unpacking
243 UnpackBaryon( ProjectilePDGcode, common.AQ[0 << 248 G4int AQ[3];
>> 249 UnpackBaryon( ProjectilePDGcode, AQ[0], AQ[1], AQ[2] );
244 250
245 // Target unpacking 251 // Target unpacking
246 UnpackBaryon( TargetPDGcode, common.Q[0], co << 252 G4int Q[3];
>> 253 UnpackBaryon( TargetPDGcode, Q[0], Q[1], Q[2] );
247 254
248 G4double Ksi = G4UniformRand(); 255 G4double Ksi = G4UniformRand();
249 256
250 if ( Ksi < X_a / Xannihilation ) { 257 if ( Ksi < X_a / Xannihilation ) {
251 return Create3QuarkAntiQuarkStrings( proje <<
252 } <<
253 258
254 G4int resultCode = 99; << 259 // Simulation of 3 anti-quark-quark strings creation
255 if ( Ksi < (X_a + X_b) / Xannihilation ) { << 260 // Sampling of anti-quark order in projectile
256 resultCode = Create1DiquarkAntiDiquarkStri <<
257 if ( resultCode == 0 ) { <<
258 return true; <<
259 } else if ( resultCode == 99 ) { <<
260 return false; <<
261 } <<
262 } <<
263 261
264 if ( Ksi < ( X_a + X_b + X_c ) / Xannihilati << 262 #ifdef debugFTFannih
265 resultCode = Create2QuarkAntiQuarkStrings( << 263 G4cout << "Process a, 3 shirt diagram" << G4endl;
266 if ( resultCode == 0 ) { << 264 #endif
267 return true; <<
268 } else if ( resultCode == 99 ) { <<
269 return false; <<
270 } <<
271 } <<
272 265
273 if ( Ksi < ( X_a + X_b + X_c + X_d ) / Xanni << 266 G4int SampledCase = G4RandFlat::shootInt( G4long( 6 ) );
274 return Create1QuarkAntiQuarkString( projec <<
275 } <<
276 267
277 return true; << 268 G4int Tmp1( 0 ), Tmp2( 0 );
278 } << 269 if ( SampledCase == 0 ) {
>> 270 } else if ( SampledCase == 1 ) {
>> 271 Tmp1 = AQ[1]; AQ[1] = AQ[2]; AQ[2] = Tmp1;
>> 272 } else if ( SampledCase == 2 ) {
>> 273 Tmp1 = AQ[0]; AQ[0] = AQ[1]; AQ[1] = Tmp1;
>> 274 } else if ( SampledCase == 3 ) {
>> 275 Tmp1 = AQ[0]; Tmp2 = AQ[1]; AQ[0] = AQ[2]; AQ[1] = Tmp1; AQ[2] = Tmp2;
>> 276 } else if ( SampledCase == 4 ) {
>> 277 Tmp1 = AQ[0]; Tmp2 = AQ[1]; AQ[0] = Tmp2; AQ[1] = AQ[2]; AQ[2] = Tmp1;
>> 278 } else if ( SampledCase == 5 ) {
>> 279 Tmp1 = AQ[0]; Tmp2 = AQ[1]; AQ[0] = AQ[2]; AQ[1] = Tmp2; AQ[2] = Tmp1;
>> 280 }
279 281
>> 282 // Set the string properties
280 283
281 //-------------------------------------------- << 284 //G4cout << "String 1 " << AQ[0] << " " << Q[0] << G4endl;
>> 285 projectile->SplitUp();
>> 286 projectile->SetFirstParton( AQ[0] );
>> 287 projectile->SetSecondParton( Q[0] );
>> 288 projectile->SetStatus( 0 );
282 289
283 G4bool G4FTFAnnihilation:: << 290 // Uzhi March 2016 start
284 Create3QuarkAntiQuarkStrings( G4VSplitableHadr << 291 G4int aAQ, aQ;
285 G4VSplitableHadr << 292 aAQ=std::abs( AQ[0] ); aQ=std::abs( Q[0] );
286 G4VSplitableHadr << 293 G4int NewCode;
287 G4FTFParameters* << 294 G4double aKsi = G4UniformRand();
288 G4FTFAnnihilatio << 295
289 // Simulation of 3 anti-quark - quark string << 296 if ( aAQ == aQ )
>> 297 {
>> 298 if ( aAQ != 3 )
>> 299 {
>> 300 NewCode = 111; // Pi0-meson
>> 301 if ( aKsi < 0.5 )
>> 302 {
>> 303 NewCode = 221; // Eta -meson
>> 304 if ( aKsi < 0.25 ) {NewCode = 331;} // Eta'-meson
>> 305 }
>> 306 } else
>> 307 {
>> 308 NewCode = 221; // Eta -meson
>> 309 if( aKsi < 0.5 ) {NewCode = 331;} // Eta'-meson
>> 310 }
>> 311 } else
>> 312 {
>> 313 if ( aAQ > aQ ){ NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/AQ[0]; }
>> 314 else { NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/Q[0]; }
>> 315 }
290 316
291 #ifdef debugFTFannih << 317 G4ParticleDefinition* TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode );
292 G4cout << "Process a, 3 shirt diagram" << G4 << 318 if(!TestParticle) return false;
293 #endif << 319 projectile->SetDefinition( TestParticle );
>> 320
>> 321 theParameters->SetProjMinDiffMass( 0.5 ); // Uzhi 2016 M+140 ??
>> 322 theParameters->SetProjMinNonDiffMass( 0.5 ); // Uzhi 2016 M+140 ??
>> 323 // Uzhi March 2016 end
>> 324
>> 325 //G4cout << "String 2 " << Q[1] << " " << AQ[1] << G4endl;
>> 326 target->SplitUp();
>> 327 target->SetFirstParton( Q[1] );
>> 328 target->SetSecondParton( AQ[1] );
>> 329 target->SetStatus( 0 );
>> 330
>> 331 // Uzhi March 2016 Start
>> 332 aAQ=std::abs( AQ[1] ); aQ=std::abs( Q[1] ); aKsi = G4UniformRand();
>> 333 if ( aAQ == aQ )
>> 334 {
>> 335 if ( aAQ != 3 )
>> 336 {
>> 337 NewCode = 111; // Pi0-meson
>> 338 if ( aKsi < 0.5 )
>> 339 {
>> 340 NewCode = 221; // Eta -meson
>> 341 if ( aKsi < 0.25 ) {NewCode = 331;} // Eta'-meson
>> 342 }
>> 343 } else
>> 344 {
>> 345 NewCode = 221; // Eta -meson
>> 346 if( aKsi < 0.5 ) {NewCode = 331;} // Eta'-meson
>> 347 }
>> 348 } else
>> 349 {
>> 350 if ( aAQ > aQ ){ NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/AQ[1]; }
>> 351 else { NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/Q[1]; }
>> 352 }
>> 353 TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode );
>> 354 if(!TestParticle) return false;
>> 355 target->SetDefinition( TestParticle );
>> 356
>> 357 theParameters->SetTarMinDiffMass( 0.5 ); // Uzhi 2016 M+140 ??
>> 358 theParameters->SetTarMinNonDiffMass( 0.5 ); // Uzhi 2016 M+140 ??
>> 359 // Uzhi March 2016 end
>> 360
>> 361
>> 362 //G4cout << "String 3 " << AQ[2] << " " << Q[2] << G4endl;
>> 363 AdditionalString = new G4DiffractiveSplitableHadron();
>> 364
>> 365 // Uzhi March 2016 start
>> 366 aAQ=std::abs( AQ[2] ); aQ=std::abs( Q[2] ); aKsi = G4UniformRand();
>> 367
>> 368 if ( aAQ == aQ )
>> 369 {
>> 370 if ( aAQ != 3 )
>> 371 {
>> 372 NewCode = 111; // Pi0-meson
>> 373 if ( aKsi < 0.5 )
>> 374 {
>> 375 NewCode = 221; // Eta -meson
>> 376 if ( aKsi < 0.25 ) {NewCode = 331;} // Eta'-meson
>> 377 }
>> 378 } else
>> 379 {
>> 380 NewCode = 221; // Eta -meson
>> 381 if( aKsi < 0.5 ) {NewCode = 331;} // Eta'-meson
>> 382 }
>> 383 } else
>> 384 {
>> 385 if ( aAQ > aQ ){ NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/AQ[2]; }
>> 386 else { NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/Q[2]; }
>> 387 }
>> 388
>> 389 TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode );
>> 390 if(!TestParticle) return false;
>> 391 AdditionalString->SetDefinition( TestParticle );
>> 392 // Uzhi March 2016 end
>> 393
>> 394 AdditionalString->SplitUp();
>> 395 AdditionalString->SetFirstParton( AQ[2] );
>> 396 AdditionalString->SetSecondParton( Q[2] );
>> 397 AdditionalString->SetStatus( 0 );
>> 398 //G4cout << G4endl << "*AdditionalString in Annih" << AdditionalString << G4endl;
>> 399
>> 400 // Sampling kinematical properties
>> 401 // 1 string AQ[0]-Q[0]// 2 string AQ[1]-Q[1]// 3 string AQ[2]-Q[2]
>> 402
>> 403 G4ThreeVector Quark_Mom[6];
>> 404 G4double ModMom2[6]; //ModMom[6]
>> 405
>> 406 AveragePt2 = 200.0*200.0; maxPtSquare = S;
>> 407
>> 408 G4double SumMt( 0.0 );
>> 409 G4double MassQ2 = 0.0; // 100.0*100.0*MeV*MeV;
>> 410 G4int NumberOfTries( 0 );
>> 411 G4double ScaleFactor( 1.0 );
>> 412
>> 413 const G4int maxNumberOfLoops = 1000;
>> 414 G4int loopCounter = 0;
>> 415 do {
>> 416 NumberOfTries++;
>> 417 if ( NumberOfTries == 100*(NumberOfTries/100) ) {
>> 418 // At large number of tries it would be better to reduce the values of <Pt^2>
>> 419 ScaleFactor /= 2.0;
>> 420 AveragePt2 *= ScaleFactor;
>> 421 }
>> 422 G4ThreeVector PtSum( 0.0, 0.0, 0.0 );
>> 423 for ( G4int i = 0; i < 6; i++ ) {
>> 424 Quark_Mom [i] = GaussianPt( AveragePt2, maxPtSquare );
>> 425 PtSum += Quark_Mom[i];
>> 426 }
>> 427 PtSum /= 6.0;
>> 428 SumMt = 0.0;
>> 429 for( G4int i = 0; i < 6; i++ ) {
>> 430 Quark_Mom[i] -= PtSum;
>> 431 //ModMom[i] = Quark_Mom[i].mag();
>> 432 ModMom2[i] = Quark_Mom[i].mag2();
>> 433 SumMt += std::sqrt( ModMom2[i] + MassQ2 );
>> 434 }
>> 435 } while ( ( SumMt > SqrtS ) &&
>> 436 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */
>> 437 if ( loopCounter >= maxNumberOfLoops ) {
>> 438 return false;
>> 439 }
294 440
295 // Sampling kinematical properties of quark. << 441 G4double WminusTarget( 0.0 ), WplusProjectile( 0.0 );
296 442
297 const G4int maxNumberOfLoops = 1000; << 443 // Closed is variant with sampling of Xs at minimum
298 G4double MassQ2 = 0.0; // Simp << 444 //G4double SumMod_anti = ModMom[0] + ModMom[1] + ModMom[2];
299 // In p << 445 //Quark_Mom[0].setZ( ModMom[0]/SumMod_anti );
300 G4double Quark_Xs[6]; << 446 //Quark_Mom[1].setZ( ModMom[1]/SumMod_anti );
301 G4ThreeVector Quark_Mom[6]; << 447 //Quark_Mom[2].setZ( ModMom[2]/SumMod_anti );
302 << 448 //G4double SumMod_bary = ModMom[3] + ModMom[4] + ModMom[5];
303 G4double Alfa_R = 0.5; << 449 //Quark_Mom[3].setZ( ModMom[3]/SumMod_bary );
304 G4double AveragePt2 = 200.0*200.0, maxPtSqua << 450 //Quark_Mom[4].setZ( ModMom[4]/SumMod_bary );
305 G4double ScaleFactor = 1.0; << 451 //Quark_Mom[5].setZ( ModMom[5]/SumMod_bary );
306 G4double Alfa = 0.0, Beta = 0.0; << 452 //G4double Alfa = SumMod_anti*SumMod_anti;
307 << 453 //G4double Beta = SumMod_bary*SumMod_bary;
308 G4int NumberOfTries = 0, loopCounter = 0; << 454 //G4double DecayMomentum2 = S*S + Alfa*Alfa + Beta*Beta
309 << 455 // - 2.0*S*Alfa - 2.0*S*Beta - 2.0*Alfa*Beta;
310 do { << 456 //WminusTarget = ( S - Alfa + Beta + std::sqrt( DecayMomentum2 ) )/2.0/SqrtS;
311 // Sampling X's of anti-baryon and baryon << 457 //WplusProjectile = SqrtS - Beta/WminusTarget;
312 G4double x1 = 0.0, x2 = 0.0, x3 = 0.0; << 458 // Closed is variant with sampling of Xs at minimum
313 G4double Product = 1.0; << 459
314 for ( G4int iCase = 0; iCase < 2; ++iCase << 460 // Sampling X's of anti-baryon
>> 461 G4double Alfa_R = 0.5;
>> 462 NumberOfTries = 0;
>> 463 ScaleFactor = 1.0;
>> 464 G4bool Succes( true );
>> 465
>> 466 loopCounter = 0;
>> 467 do {
>> 468
>> 469 Succes = true;
>> 470 NumberOfTries++;
>> 471 if ( NumberOfTries == 100*(NumberOfTries/100) ) {
>> 472 // At large number of tries it would be better to reduce the values of Pt's
>> 473 ScaleFactor /= 2.0;
>> 474 }
315 475
316 G4double r1 = G4UniformRand(), r2 = G4Un <<
317 if ( Alfa_R == 1.0 ) { 476 if ( Alfa_R == 1.0 ) {
318 x1 = 1.0 - std::sqrt( r1 ); << 477 G4double Xaq1 = 1.0 - std::sqrt( G4UniformRand() );
319 x2 = (1.0 - x1) * r2; << 478 G4double Xaq2 = (1.0 - Xaq1) * G4UniformRand();
>> 479 G4double Xaq3 = 1.0 - Xaq1 - Xaq2;
>> 480 Quark_Mom[0].setZ( Xaq1 ); Quark_Mom[1].setZ( Xaq2 ); Quark_Mom[2].setZ( Xaq3 );
320 } else { 481 } else {
321 x1 = sqr( r1 ); << 482 G4double Xaq1 = sqr( G4UniformRand() );
322 x2 = (1.0 - x1) * sqr( std::sin( pi/2. << 483 G4double Xaq2 = (1.0 - Xaq1)*sqr( std::sin( pi/2.0*G4UniformRand() ) );
>> 484 G4double Xaq3 = 1.0 - Xaq1 - Xaq2;
>> 485 Quark_Mom[0].setZ( Xaq1 ); Quark_Mom[1].setZ( Xaq2 ); Quark_Mom[2].setZ( Xaq3 );
323 } 486 }
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 } <<
330 487
331 if ( Product == 0.0 ) continue; << 488 // Sampling X's of baryon
>> 489 if ( Alfa_R == 1.0 ) {
>> 490 G4double Xq1 = 1.0 - std::sqrt( G4UniformRand() );
>> 491 G4double Xq2 = (1.0 - Xq1) * G4UniformRand();
>> 492 G4double Xq3 = 1.0 - Xq1 - Xq2;
>> 493 Quark_Mom[3].setZ( Xq1 ); Quark_Mom[4].setZ( Xq2 ); Quark_Mom[5].setZ( Xq3 );
>> 494 } else {
>> 495 G4double Xq1 = sqr( G4UniformRand() );
>> 496 G4double Xq2 = (1.0 - Xq1) * sqr( std::sin( pi/2.0*G4UniformRand() ) );
>> 497 G4double Xq3 = 1.0 - Xq1 - Xq2;
>> 498 Quark_Mom[3].setZ( Xq1 ); Quark_Mom[4].setZ( Xq2 ); Quark_Mom[5].setZ( Xq3 );
>> 499 }
332 500
333 ++NumberOfTries; << 501 G4double Alfa( 0.0 ), Beta( 0.0 );
334 if ( NumberOfTries == 100*(NumberOfTries/1 << 502 for ( G4int i = 0; i < 3; i++ ) { // For Anti-baryon
335 // After a large number of tries, it is << 503 if ( Quark_Mom[i].getZ() != 0.0 ) {
336 ScaleFactor /= 2.0; << 504 Alfa += ( ScaleFactor * ModMom2[i] + MassQ2 ) / Quark_Mom[i].getZ();
337 AveragePt2 *= ScaleFactor; << 505 } else {
338 } << 506 Succes = false;
>> 507 }
>> 508 }
>> 509 for ( G4int i = 3; i < 6; i++ ) { // For baryon
>> 510 if ( Quark_Mom[i].getZ() != 0.0 ) {
>> 511 Beta += ( ScaleFactor * ModMom2[i] + MassQ2 ) / Quark_Mom[i].getZ();
>> 512 } else {
>> 513 Succes = false;
>> 514 }
>> 515 }
339 516
340 G4ThreeVector PtSum( 0.0, 0.0, 0.0 ); << 517 if ( ! Succes ) continue;
341 for ( G4int i = 0; i < 6; ++i ) { <<
342 Quark_Mom [i] = GaussianPt( AveragePt2, <<
343 PtSum += Quark_Mom[i]; <<
344 } <<
345 518
346 PtSum /= 6.0; << 519 if ( std::sqrt( Alfa ) + std::sqrt( Beta ) > SqrtS ) {
347 Alfa = 0.0; Beta = 0.0; << 520 Succes = false;
>> 521 continue;
>> 522 }
348 523
349 for ( G4int i = 0; i < 6; ++i ) { // Loop << 524 G4double DecayMomentum2 = S*S + Alfa*Alfa + Beta*Beta
350 Quark_Mom[i] -= PtSum; << 525 - 2.0*S*Alfa - 2.0*S*Beta - 2.0*Alfa*Beta;
>> 526
>> 527 WminusTarget = ( S - Alfa + Beta + std::sqrt( DecayMomentum2 ) ) / 2.0 / SqrtS;
>> 528 WplusProjectile = SqrtS - Beta/WminusTarget;
>> 529
>> 530 } while ( ( ! Succes ) &&
>> 531 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */
>> 532 if ( loopCounter >= maxNumberOfLoops ) {
>> 533 return false;
>> 534 }
351 535
352 G4double val = ( Quark_Mom[i].mag2() + M << 536 G4double SqrtScaleF = std::sqrt( ScaleFactor );
353 if ( i < 3 ) { // anti-baryon << 537 for ( G4int i = 0; i < 3; i++ ) {
354 Alfa += val; << 538 G4double Pz = WplusProjectile * Quark_Mom[i].getZ() / 2.0 -
355 } else { // baryon (iCase == 1) << 539 ( ScaleFactor * ModMom2[i] + MassQ2 ) /
356 Beta += val; << 540 ( 2.0 * WplusProjectile * Quark_Mom[i].getZ() );
>> 541 Quark_Mom[i].setZ( Pz );
>> 542 if ( ScaleFactor != 1.0 ) {
>> 543 Quark_Mom[i].setX( SqrtScaleF * Quark_Mom[i].getX() );
>> 544 Quark_Mom[i].setY( SqrtScaleF * Quark_Mom[i].getY() );
>> 545 }
>> 546 }
>> 547 for ( G4int i = 3; i < 6; i++ ) {
>> 548 G4double Pz = -WminusTarget * Quark_Mom[i].getZ() / 2.0 +
>> 549 ( ScaleFactor * ModMom2[i] + MassQ2 ) /
>> 550 ( 2.0 * WminusTarget * Quark_Mom[i].getZ() );
>> 551 Quark_Mom[i].setZ( Pz );
>> 552 if ( ScaleFactor != 1.0 ) {
>> 553 Quark_Mom[i].setX( SqrtScaleF * Quark_Mom[i].getX() );
>> 554 Quark_Mom[i].setY( SqrtScaleF * Quark_Mom[i].getY() );
357 } 555 }
358 } 556 }
>> 557 //G4cout << "Sum AQ " << Quark_Mom[0] + Quark_Mom[1] + Quark_Mom[2] << G4endl
>> 558 // << "Sum Q " << Quark_Mom[3] + Quark_Mom[4] + Quark_Mom[5] << G4endl;
359 559
360 } while ( ( std::sqrt( Alfa ) + std::sqrt( B << 560 G4ThreeVector tmp = Quark_Mom[0] + Quark_Mom[3];
361 ++loopCounter < maxNumberOfLoops ) << 561 G4LorentzVector Pstring1( tmp, std::sqrt( Quark_Mom[0].mag2() + MassQ2 ) +
>> 562 std::sqrt( Quark_Mom[3].mag2() + MassQ2 ) );
>> 563 G4double Ystring1 = Pstring1.rapidity();
>> 564
>> 565 //G4cout << "Mom 1 string " << G4endl << Quark_Mom[0] << G4endl << Quark_Mom[3] << G4endl
>> 566 // << tmp << " " << tmp.mag() << G4endl;
>> 567 //G4cout << "1 str " << Pstring1 << " " << Pstring1.mag() << " " << Ystring1 << G4endl;
>> 568
>> 569 tmp = Quark_Mom[1] + Quark_Mom[4];
>> 570 G4LorentzVector Pstring2( tmp, std::sqrt( Quark_Mom[1].mag2() + MassQ2 ) +
>> 571 std::sqrt( Quark_Mom[4].mag2() + MassQ2 ) );
>> 572 G4double Ystring2 = Pstring2.rapidity();
>> 573
>> 574 //G4cout << "Mom 2 string " << G4endl << Quark_Mom[1] << G4endl << Quark_Mom[4] << G4endl
>> 575 // << tmp << " " << tmp.mag() << G4endl;
>> 576 //G4cout << "2 str " << Pstring2 << " " << Pstring2.mag() << " " << Ystring2 << G4endl;
>> 577
>> 578 tmp = Quark_Mom[2] + Quark_Mom[5];
>> 579 G4LorentzVector Pstring3( tmp, std::sqrt( Quark_Mom[2].mag2() + MassQ2 ) +
>> 580 std::sqrt( Quark_Mom[5].mag2() + MassQ2 ) );
>> 581 G4double Ystring3 = Pstring3.rapidity();
>> 582
>> 583 //G4cout << "Mom 3 string " << G4endl << Quark_Mom[2] << G4endl << Quark_Mom[5] << G4endl
>> 584 // << tmp << " " << tmp.mag() << G4endl;
>> 585 //G4cout << "3 str " << Pstring3 << " " << Pstring3.mag() << " " << Ystring3 << G4endl
>> 586 // << "SumE " << Pstring1.e() + Pstring2.e() + Pstring3.e() << G4endl
>> 587 // << Pstring1.mag() << " " <<Pstring2.mag() << " " << Pstring3.mag() << G4endl;
>> 588 //G4int Uzhi; G4cin >> Uzhi;
>> 589
>> 590 G4LorentzVector LeftString( 0.0, 0.0, 0.0, 0.0 );
>> 591 if ( Ystring1 > Ystring2 && Ystring2 > Ystring3 ) {
>> 592 Pprojectile = Pstring1;
>> 593 LeftString = Pstring2;
>> 594 Ptarget = Pstring3;
>> 595 }
>> 596 if ( Ystring1 > Ystring3 && Ystring3 > Ystring2 ) {
>> 597 Pprojectile = Pstring1;
>> 598 LeftString = Pstring3;
>> 599 Ptarget = Pstring2;
>> 600 }
>> 601
>> 602 if ( Ystring2 > Ystring1 && Ystring1 > Ystring3 ) {
>> 603 Pprojectile = Pstring2;
>> 604 LeftString = Pstring1;
>> 605 Ptarget = Pstring3;
>> 606 }
>> 607 if ( Ystring2 > Ystring3 && Ystring3 > Ystring1 ) {
>> 608 Pprojectile = Pstring2;
>> 609 LeftString = Pstring3;
>> 610 Ptarget = Pstring1;
>> 611 }
>> 612
>> 613 if ( Ystring3 > Ystring1 && Ystring1 > Ystring2 ) {
>> 614 Pprojectile = Pstring3;
>> 615 LeftString = Pstring1;
>> 616 Ptarget = Pstring2;
>> 617 }
>> 618 if ( Ystring3 > Ystring2 && Ystring2 > Ystring1 ) {
>> 619 Pprojectile = Pstring3;
>> 620 LeftString = Pstring2;
>> 621 Ptarget = Pstring1;
>> 622 }
>> 623 //G4cout << "SumP " << Pprojectile + LeftString + Ptarget << " " << SqrtS << G4endl;
>> 624
>> 625 Pprojectile.transform( toLab );
>> 626 LeftString.transform( toLab );
>> 627 Ptarget.transform( toLab );
>> 628 //G4cout << "SumP " << Pprojectile + LeftString + Ptarget << " " << SqrtS << G4endl;
362 629
363 if ( loopCounter >= maxNumberOfLoops ) { << 630 // Calculation of the creation time
364 return false; << 631 projectile->SetTimeOfCreation( target->GetTimeOfCreation() );
365 } << 632 projectile->SetPosition( target->GetPosition() );
>> 633 AdditionalString->SetTimeOfCreation( target->GetTimeOfCreation() );
>> 634 AdditionalString->SetPosition( target->GetPosition() );
>> 635 // Creation time and position of target nucleon were determined in
>> 636 // ReggeonCascade() of G4FTFModel
>> 637
>> 638 //G4cout << "Mproj " << Pprojectile.mag() << G4endl << "Mtarg " << Ptarget.mag() << G4endl;
>> 639 projectile->Set4Momentum( Pprojectile );
>> 640 AdditionalString->Set4Momentum( LeftString );
>> 641 target->Set4Momentum( Ptarget );
>> 642 projectile->IncrementCollisionCount( 1 );
>> 643 AdditionalString->IncrementCollisionCount( 1 );
>> 644 target->IncrementCollisionCount( 1 );
366 645
367 G4double DecayMomentum2 = sqr(common.S) + sq << 646 theParameters->SetProbabilityOfAnnihilation( 0.0 ); // Uzhi March 2016
368 - 2.0*( common.S*( <<
369 647
370 G4double WminusTarget = 0.0, WplusProjectile << 648 return true;
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 } <<
385 649
386 // Sampling of anti-quark order in projectil << 650 } // End of if ( Ksi < X_a / Xannihilation )
387 G4int SampledCase = (G4int)G4RandFlat::shoot <<
388 G4int Tmp1 = 0, Tmp2 = 0; <<
389 switch ( SampledCase ) { <<
390 case 1 : Tmp1 = common.AQ[1]; common.AQ[1] <<
391 case 2 : Tmp1 = common.AQ[0]; common.AQ[0] <<
392 case 3 : Tmp1 = common.AQ[0]; Tmp2 <<
393 common.AQ[1] = Tmp1; comm <<
394 case 4 : Tmp1 = common.AQ[0]; Tmp2 <<
395 common.AQ[1] = common.AQ[2]; comm <<
396 case 5 : Tmp1 = common.AQ[0]; Tmp2 <<
397 common.AQ[1] = Tmp2; comm <<
398 } <<
399 651
400 // Set the string properties << 652 // Simulation of anti-diquark-diquark string creation
401 // An anti quark - quark pair can have the q <<
402 // or a vector meson: the last digit of the <<
403 // For simplicity only scalar is considered <<
404 G4int NewCode = 0, antiQuark = 0, quark = 0; <<
405 G4ParticleDefinition* TestParticle = nullptr <<
406 for ( G4int iString = 0; iString < 3; ++iStr <<
407 if ( iString == 0 ) { <<
408 antiQuark = common.AQ[0]; quark = commo <<
409 projectile->SetFirstParton( antiQuark ); <<
410 projectile->SetSecondParton( quark ); <<
411 projectile->SetStatus( 0 ); <<
412 } else if ( iString == 1 ) { <<
413 quark = common.Q[1]; antiQuark = common <<
414 target->SetFirstParton( quark ); <<
415 target->SetSecondParton( antiQuark ); <<
416 target->SetStatus( 0 ); <<
417 } else { // iString == 2 <<
418 antiQuark = common.AQ[2]; quark = commo <<
419 } <<
420 G4int absAntiQuark = std::abs( antiQuark ) <<
421 G4double aKsi = G4UniformRand(); <<
422 if ( absAntiQuark == absQuark ) { <<
423 if ( absAntiQuark != 3 ) { // Not yet c <<
424 NewCode = 111; // Pi0-meson <<
425 if ( aKsi < 0.5 ) { <<
426 NewCode = 221; // Eta -meso <<
427 if ( aKsi < 0.25 ) { <<
428 NewCode = 331; // Eta'-meso <<
429 } <<
430 } <<
431 } else { <<
432 NewCode = 221; // Eta -meso <<
433 if ( aKsi < 0.5 ) { <<
434 NewCode = 331; // Eta'-meso <<
435 } <<
436 } <<
437 } else { // Vector mesons - rho, omega, p <<
438 if ( absAntiQuark > absQuark ) { <<
439 NewCode = absAntiQuark*100 + absQuark* <<
440 } else { <<
441 NewCode = absQuark*100 + absAntiQuark* <<
442 } <<
443 } <<
444 if ( iString == 2 ) AdditionalString = new <<
445 TestParticle = G4ParticleTable::GetParticl <<
446 if ( ! TestParticle ) return false; <<
447 if ( iString == 0 ) { <<
448 projectile->SetDefinition( TestParticle <<
449 theParameters->SetProjMinDiffMass( 0.5 ) <<
450 theParameters->SetProjMinNonDiffMass( 0. <<
451 } else if ( iString == 1 ) { <<
452 target->SetDefinition( TestParticle ); <<
453 theParameters->SetTarMinDiffMass( 0.5 ); <<
454 theParameters->SetTarMinNonDiffMass( 0.5 <<
455 } else { // iString == 2 <<
456 AdditionalString->SetDefinition( TestPar <<
457 AdditionalString->SetFirstParton( common <<
458 AdditionalString->SetSecondParton( commo <<
459 AdditionalString->SetStatus( 0 ); <<
460 } <<
461 } // End of the for loop over the 3 string <<
462 653
463 // 1st string AQ[0]-Q[0], 2nd string AQ[1]-Q << 654 if ( Ksi < (X_a + X_b) / Xannihilation ) {
>> 655
>> 656 #ifdef debugFTFannih
>> 657 G4cout << "Process b, quark - anti-quark annihilation, di-q - anti-di-q string" << G4endl;
>> 658 #endif
464 659
465 G4LorentzVector Pstring1, Pstring2, Pstring3 << 660 G4int CandidatsN( 0 ), CandAQ[9][2], CandQ[9][2];
466 G4int QuarkOrder[3] = { 0 }; << 661 G4int LeftAQ1( 0 ), LeftAQ2( 0 ), LeftQ1( 0 ), LeftQ2( 0 );
467 G4double YstringMax = 0.0, YstringMin = 0.0; << 662
468 for ( G4int i = 0; i < 3; ++i ) { << 663 for ( G4int iAQ = 0; iAQ < 3; iAQ++ ) {
469 G4ThreeVector tmp = Quark_Mom[i] + Quark_M << 664 for ( G4int iQ = 0; iQ < 3; iQ++ ) {
470 G4LorentzVector Pstring( tmp, std::sqrt( Q << 665 if ( -AQ[iAQ] == Q[iQ] ) {
471 std::sqrt( Q << 666 if ( iAQ == 0 ) { CandAQ[CandidatsN][0] = 1; CandAQ[CandidatsN][1] = 2; }
472 // Add protection for rapidity = 0.5*ln( << 667 if ( iAQ == 1 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 2; }
473 G4double Ystring = 0.0; << 668 if ( iAQ == 2 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 1; }
474 if ( Pstring.e() > 1.0e-30 ) { << 669 if ( iQ == 0 ) { CandQ[CandidatsN][0] = 1; CandQ[CandidatsN][1] = 2; }
475 if ( Pstring.e() + Pstring.pz() < 1.0e-3 << 670 if ( iQ == 1 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 2; }
476 Ystring = -1.0e30; // A very large n << 671 if ( iQ == 2 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 1; }
477 if ( Pstring.e() - Pstring.pz() < 1.0e << 672 CandidatsN++;
478 Ystring = 1.0e30; // A very large p <<
479 } else { // Normal case <<
480 Ystring = Pstring.rapidity(); <<
481 } 673 }
482 } 674 }
483 } 675 }
484 // Keep ordering in rapidity: "1" highest, << 676 //G4cout << "CandidatsN " << CandidatsN << G4endl;
485 if ( i == 0 ) { << 677
486 Pstring1 = Pstring; YstringMax = Yst << 678 if ( CandidatsN != 0 ) {
487 QuarkOrder[0] = 0; << 679 G4int SampledCase = G4RandFlat::shootInt( G4long( CandidatsN ) );
488 } else if ( i == 1 ) { << 680 LeftAQ1 = AQ[ CandAQ[SampledCase][0] ];
489 if ( Ystring > YstringMax ) { << 681 LeftAQ2 = AQ[ CandAQ[SampledCase][1] ];
490 Pstring2 = Pstring1; YstringMin = Yst << 682 LeftQ1 = Q[ CandQ[SampledCase][0] ];
491 Pstring1 = Pstring; YstringMax = Yst << 683 LeftQ2 = Q[ CandQ[SampledCase][1] ];
492 QuarkOrder[0] = 1; QuarkOrder[1] = 0; << 684
>> 685 // Build anti-diquark and diquark
>> 686 G4int Anti_DQ( 0 ), DQ( 0 );
>> 687 if ( std::abs( LeftAQ1 ) > std::abs( LeftAQ2 ) ) {
>> 688 Anti_DQ = 1000*LeftAQ1 + 100*LeftAQ2 - 3; // 1
493 } else { 689 } else {
494 Pstring2 = Pstring; YstringMin = Yst << 690 Anti_DQ = 1000*LeftAQ2 + 100*LeftAQ1 - 3; // 1
495 QuarkOrder[1] = 1; <<
496 } 691 }
497 } else { // i == 2 << 692 //if ( G4UniformRand() > 0.5 ) Anti_DQ -= 2;
498 if ( Ystring > YstringMax ) { << 693 if ( std::abs( LeftQ1 ) > std::abs( LeftQ2 ) ) {
499 Pstring3 = Pstring2; << 694 DQ = 1000*LeftQ1 + 100*LeftQ2 + 3; // 1
500 Pstring2 = Pstring1; <<
501 Pstring1 = Pstring; <<
502 QuarkOrder[1] = QuarkOrder[0]; <<
503 QuarkOrder[2] = QuarkOrder[1]; <<
504 QuarkOrder[0] = 2; <<
505 } else if ( Ystring > YstringMin ) { <<
506 Pstring3 = Pstring2; <<
507 Pstring2 = Pstring; <<
508 } else { 695 } else {
509 Pstring3 = Pstring; << 696 DQ = 1000*LeftQ2 + 100*LeftQ1 + 3; // 1
510 QuarkOrder[2] = 2; <<
511 } 697 }
512 } << 698 // if ( G4UniformRand() > 0.5 ) DQ += 2;
513 } <<
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 } <<
521 699
522 projectile->Splitting(); << 700 // Set the string properties
523 projectile->GetNextAntiParton()->Set4Momentu << 701 //G4cout << "Left ADiQ DiQ " << Anti_DQ << " " << DQ << G4endl;
524 projectile->GetNextParton()->Set4Momentum( Q << 702 projectile->SplitUp();
525 << 703 //projectile->SetFirstParton( Anti_DQ );
526 target->Splitting(); << 704 //projectile->SetSecondParton( DQ );
527 target->GetNextParton()->Set4Momentum( Quark << 705 projectile->SetFirstParton( DQ );
528 target->GetNextAntiParton()->Set4Momentum( Q << 706 projectile->SetSecondParton( Anti_DQ );
529 << 707 projectile->SetStatus( 0 );
530 AdditionalString->Splitting(); << 708 target->SetStatus( 4 ); // The target nucleon has annihilated 3->4 Uzhi Oct 2014
531 AdditionalString->GetNextAntiParton()->Set4M << 709 Pprojectile.setPx( 0.0 );
532 AdditionalString->GetNextParton()->Set4Momen << 710 Pprojectile.setPy( 0.0 );
533 << 711 Pprojectile.setPz( 0.0 );
534 common.Pprojectile = Pstring1; // << 712 Pprojectile.setE( SqrtS );
535 common.Ptarget = Pstring3; // << 713 Pprojectile.transform( toLab );
536 G4LorentzVector LeftString( Pstring2 ); // << 714 // Uzhi March 2016 if QQ_QQbar will interact Set Mmin, MdifMin
537 << 715
538 if ( common.RotateStrings ) { << 716 // Calculation of the creation time
539 common.Pprojectile *= common.RandomRotatio << 717 projectile->SetTimeOfCreation( target->GetTimeOfCreation() );
540 common.Ptarget *= common.RandomRotatio << 718 projectile->SetPosition( target->GetPosition() );
541 LeftString *= common.RandomRotatio << 719 // Creation time and position of target nucleon were determined in
542 } << 720 // ReggeonCascade() of G4FTFModel
543 << 721
544 common.Pprojectile.transform( common.toLab ) << 722 //G4cout << "Mproj " << Pprojectile.mag() << G4endl
545 common.Ptarget.transform( common.toLab ); << 723 // << "Mtarg " << Ptarget.mag() << G4endl;
546 LeftString.transform( common.toLab ); << 724 projectile->Set4Momentum( Pprojectile );
547 <<
548 // Calculation of the creation time <<
549 // Creation time and position of target nucl <<
550 projectile->SetTimeOfCreation( target->GetTi <<
551 projectile->SetPosition( target->GetPosition <<
552 AdditionalString->SetTimeOfCreation( target- <<
553 AdditionalString->SetPosition( target->GetPo <<
554 <<
555 projectile->Set4Momentum( common.Pprojectile <<
556 AdditionalString->Set4Momentum( LeftString ) <<
557 target->Set4Momentum( common.Ptarget ); <<
558 <<
559 projectile->IncrementCollisionCount( 1 ); <<
560 AdditionalString->IncrementCollisionCount( 1 <<
561 target->IncrementCollisionCount( 1 ); <<
562 <<
563 return true; <<
564 } <<
565 <<
566 <<
567 //-------------------------------------------- <<
568 <<
569 G4int G4FTFAnnihilation:: <<
570 Create1DiquarkAntiDiquarkString( G4VSplitableH <<
571 G4VSplitableH <<
572 G4FTFAnnihila <<
573 // Simulation of anti-diquark-diquark string <<
574 // This method returns an integer code - ins <<
575 // "0" : successfully ended and nothing el <<
576 // "1" : successfully completed, but the w <<
577 // "99" : unsuccessfully ended, nothing els <<
578 725
579 #ifdef debugFTFannih << 726 projectile->IncrementCollisionCount( 1 );
580 G4cout << "Process b, quark - anti-quark ann << 727 target->IncrementCollisionCount( 1 );
581 #endif <<
582 728
583 G4int CandidatsN = 0, CandAQ[9][2] = {}, Can << 729 //theParameters->SetProbabilityOfAnnihilation( 0.0 ); // Uzhi March 2016
584 for ( G4int iAQ = 0; iAQ < 3; ++iAQ ) { // << 730 // In the case baryon and anti-baryon are created. Thus the antibaryon can annihilate latter.
585 for ( G4int iQ = 0; iQ < 3; ++iQ ) { // <<
586 if ( -common.AQ[iAQ] == common.Q[iQ] ) { <<
587 // Here "0", "1", "2" means, respectiv <<
588 // of the (anti-baryon) projectile or <<
589 if ( iAQ == 0 ) { CandAQ[CandidatsN][0 <<
590 if ( iAQ == 1 ) { CandAQ[CandidatsN][0 <<
591 if ( iAQ == 2 ) { CandAQ[CandidatsN][0 <<
592 if ( iQ == 0 ) { CandQ[CandidatsN][0] <<
593 if ( iQ == 1 ) { CandQ[CandidatsN][0] <<
594 if ( iQ == 2 ) { CandQ[CandidatsN][0] <<
595 ++CandidatsN; <<
596 } <<
597 } <<
598 } <<
599 731
600 // Remaining two (anti-)quarks that form the << 732 return true;
601 G4int LeftAQ1 = 0, LeftAQ2 = 0, LeftQ1 = 0, <<
602 if ( CandidatsN != 0 ) { <<
603 G4int SampledCase = (G4int)G4RandFlat::sho <<
604 LeftAQ1 = common.AQ[ CandAQ[SampledCase][0 <<
605 LeftAQ2 = common.AQ[ CandAQ[SampledCase][1 <<
606 LeftQ1 = common.Q[ CandQ[SampledCase][0] <<
607 LeftQ2 = common.Q[ CandQ[SampledCase][1] <<
608 <<
609 // Build anti-diquark and diquark : the la <<
610 // of anti-quark - anti-quark and quark - <<
611 // or quarks are different. For simplicity <<
612 G4int Anti_DQ = 0, DQ = 0; <<
613 if ( std::abs( LeftAQ1 ) > std::abs( LeftA <<
614 Anti_DQ = 1000*LeftAQ1 + 100*LeftAQ2 - 3 <<
615 } else { <<
616 Anti_DQ = 1000*LeftAQ2 + 100*LeftAQ1 - 3 <<
617 } <<
618 if ( std::abs( LeftQ1 ) > std::abs( LeftQ2 <<
619 DQ = 1000*LeftQ1 + 100*LeftQ2 + 3; <<
620 } else { <<
621 DQ = 1000*LeftQ2 + 100*LeftQ1 + 3; <<
622 } 733 }
623 734
624 // Set the string properties << 735 } // End of if ( Ksi < (X_a + X_b) / Xannihilation )
625 projectile->SetFirstParton( DQ ); <<
626 projectile->SetSecondParton( Anti_DQ ); <<
627 <<
628 // It is assumed that quark and di-quark m <<
629 G4LorentzVector Pquark = G4LorentzVector( <<
630 G4LorentzVector Paquark = G4LorentzVector( <<
631 <<
632 if ( common.RotateStrings ) { <<
633 Pquark *= common.RandomRotation; <<
634 Paquark *= common.RandomRotation; <<
635 } <<
636 736
637 Pquark.transform( common.toLab ); << 737 if ( Ksi < ( X_a + X_b + X_c ) / Xannihilation ) {
638 Paquark.transform( common.toLab ); <<
639 738
640 projectile->GetNextParton()->Set4Momentum( << 739 // Simulation of 2 anti-quark-quark strings creation
641 projectile->GetNextAntiParton()->Set4Momen <<
642 740
643 projectile->Splitting(); << 741 #ifdef debugFTFannih
>> 742 G4cout << "Process c, quark - anti-quark and string junctions annihilation, 2 strings left."
>> 743 << G4endl;
>> 744 #endif
644 745
645 projectile->SetStatus( 0 ); << 746 G4int CandidatsN( 0 ), CandAQ[9][2], CandQ[9][2];
646 target->SetStatus( 4 ); // The target nuc << 747 G4int LeftAQ1( 0 ), LeftAQ2( 0 ), LeftQ1( 0 ), LeftQ2( 0 );
647 common.Pprojectile.setPx( 0.0 ); <<
648 common.Pprojectile.setPy( 0.0 ); <<
649 common.Pprojectile.setPz( 0.0 ); <<
650 common.Pprojectile.setE( common.SqrtS ); <<
651 common.Pprojectile.transform( common.toLab <<
652 748
653 // Calculation of the creation time << 749 for ( G4int iAQ = 0; iAQ < 3; iAQ++ ) {
654 // Creation time and position of target nu << 750 for ( G4int iQ = 0; iQ < 3; iQ++ ) {
655 projectile->SetTimeOfCreation( target->Get << 751 if ( -AQ[iAQ] == Q[iQ] ) {
656 projectile->SetPosition( target->GetPositi << 752 if ( iAQ == 0 ) { CandAQ[CandidatsN][0] = 1; CandAQ[CandidatsN][1] = 2; }
657 projectile->Set4Momentum( common.Pprojecti << 753 if ( iAQ == 1 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 2; }
>> 754 if ( iAQ == 2 ) { CandAQ[CandidatsN][0] = 0; CandAQ[CandidatsN][1] = 1; }
>> 755 if ( iQ == 0 ) { CandQ[CandidatsN][0] = 1; CandQ[CandidatsN][1] = 2; }
>> 756 if ( iQ == 1 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 2; }
>> 757 if ( iQ == 2 ) { CandQ[CandidatsN][0] = 0; CandQ[CandidatsN][1] = 1; }
>> 758 CandidatsN++;
>> 759 }
>> 760 }
>> 761 }
>> 762 //G4cout << "CandidatsN " << CandidatsN << G4endl;
658 763
659 projectile->IncrementCollisionCount( 1 ); << 764 if ( CandidatsN != 0 ) {
660 target->IncrementCollisionCount( 1 ); << 765 G4int SampledCase = G4RandFlat::shootInt( G4long( CandidatsN ) );
>> 766 LeftAQ1 = AQ[ CandAQ[SampledCase][0] ];
>> 767 LeftAQ2 = AQ[ CandAQ[SampledCase][1] ];
>> 768 if ( G4UniformRand() < 0.5 ) {
>> 769 LeftQ1 = Q[ CandQ[SampledCase][0] ];
>> 770 LeftQ2 = Q[ CandQ[SampledCase][1] ];
>> 771 } else {
>> 772 LeftQ2 = Q[ CandQ[SampledCase][0] ];
>> 773 LeftQ1 = Q[ CandQ[SampledCase][1] ];
>> 774 }
661 775
662 return 0; // Completed successfully: noth << 776 // Set the string properties
663 } // End of if ( CandidatsN != 0 ) << 777 //G4cout << "String 1 " << LeftAQ1 << " " << LeftQ1 << G4endl;
>> 778 projectile->SplitUp();
>> 779 projectile->SetFirstParton( LeftAQ1 );
>> 780 projectile->SetSecondParton( LeftQ1 );
>> 781 projectile->SetStatus( 0 );
664 782
665 // If we allow the string to interact with o << 783 // Uzhi March 2016 start
666 // set up MinDiffrMass in Parameters, and as << 784 G4int aAQ, aQ;
667 << 785 aAQ=std::abs( LeftAQ1 ); aQ=std::abs( LeftQ1 );
668 return 1; // Successfully ended, but the wo << 786
>> 787 G4int NewCode;
>> 788 G4double aKsi = G4UniformRand();
>> 789
>> 790 if ( aAQ == aQ )
>> 791 {
>> 792 if ( aAQ != 3 )
>> 793 {
>> 794 NewCode = 111; // Pi0-meson
>> 795 if ( aKsi < 0.5 )
>> 796 {
>> 797 NewCode = 221; // Eta -meson
>> 798 if ( aKsi < 0.25 ) {NewCode = 331;} // Eta'-meson
>> 799 }
>> 800 } else
>> 801 {
>> 802 NewCode = 221; // Eta -meson
>> 803 if( aKsi < 0.5 ) {NewCode = 331;} // Eta'-meson
>> 804 }
>> 805 } else
>> 806 {
>> 807 if ( aAQ > aQ ){ NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/LeftAQ1; }
>> 808 else { NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/LeftQ1; }
669 } 809 }
670 810
>> 811 G4ParticleDefinition* TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode );
>> 812 if(!TestParticle) return false;
>> 813 projectile->SetDefinition( TestParticle );
>> 814 theParameters->SetProjMinDiffMass( 0.5 ); // (0.5) // GeV Uzhi March 2016 ???
>> 815 theParameters->SetProjMinNonDiffMass( 0.5 );
>> 816 // Uzhi March 2016 end
>> 817
>> 818 //G4cout << "String 2 " << LeftAQ2 << " " << LeftQ2 << G4endl;
>> 819 target->SplitUp();
>> 820 target->SetFirstParton( LeftQ2 );
>> 821 target->SetSecondParton( LeftAQ2 );
>> 822 target->SetStatus( 0 );
671 823
672 //-------------------------------------------- << 824 // Uzhi March 2016 start
673 << 825 aAQ=std::abs( LeftAQ2 ); aQ=std::abs( LeftQ2 ); aKsi = G4UniformRand();
674 G4int G4FTFAnnihilation:: <<
675 Create2QuarkAntiQuarkStrings( G4VSplitableHadr <<
676 G4VSplitableHadr <<
677 G4FTFParameters* <<
678 G4FTFAnnihilatio <<
679 // Simulation of 2 anti-quark-quark strings <<
680 // This method returns an integer code - ins <<
681 // "0" : successfully ended and nothing el <<
682 // "1" : successfully completed, but the w <<
683 // "99" : unsuccessfully ended, nothing els <<
684 826
685 #ifdef debugFTFannih << 827 if ( aAQ == aQ )
686 G4cout << "Process c, quark - anti-quark and << 828 {
687 << G4endl; << 829 if ( aAQ != 3 )
688 #endif << 830 {
>> 831 NewCode = 111; // Pi0-meson
>> 832 if ( aKsi < 0.5 )
>> 833 {
>> 834 NewCode = 221; // Eta -meson
>> 835 if ( aKsi < 0.25 ) {NewCode = 331;} // Eta'-meson
>> 836 }
>> 837 } else
>> 838 {
>> 839 NewCode = 221; // Eta -meson
>> 840 if( aKsi < 0.5 ) {NewCode = 331;} // Eta'-meson
>> 841 }
>> 842 } else
>> 843 {
>> 844 if ( aAQ > aQ ){ NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/LeftAQ2; }
>> 845 else { NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/LeftQ2; }
>> 846 }
689 847
690 // Sampling kinematical properties: 1st stri << 848 TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode );
691 G4ThreeVector Quark_Mom[4]; << 849 if(!TestParticle) return false;
692 G4double Quark_Xs[4]; << 850 target->SetDefinition( TestParticle );
693 G4double AveragePt2 = 200.0*200.0, maxPtSqua << 851 theParameters->SetTarMinDiffMass( 0.5 ); // Uzhi March 2016 ???
694 G4int NumberOfTries = 0, loopCounter = 0; << 852 theParameters->SetTarMinNonDiffMass( 0.5 );
695 const G4int maxNumberOfLoops = 1000; << 853 // Uzhi March 2016
696 G4double Alfa = 0.0, Beta = 0.0; << 854
697 G4double WminusTarget = 0.0, WplusProjectile << 855 // Sampling kinematical properties
698 do { << 856 // 1 string LeftAQ1-LeftQ1// 2 string LeftAQ2-LeftQ2
699 // Sampling X's of the 2 quarks and 2 anti << 857 G4ThreeVector Quark_Mom[4];
700 << 858 G4double ModMom2[4]; //ModMom[4],
701 G4double Product = 1.0; << 859
702 for ( G4int iCase = 0; iCase < 2; ++iCase << 860 AveragePt2 = 200.0*200.0; maxPtSquare = S;
703 G4double x = 0.0, r = G4UniformRand(); << 861
704 if ( Alfa_R == 1.0 ) { << 862 G4double SumMt( 0.0 );
705 if ( iCase == 0 ) { // first string << 863 G4double MassQ2 = 0.0; //100.0*100.0*MeV*MeV;
706 x = std::sqrt( r ); << 864 G4int NumberOfTries( 0 );
707 } else { // second string << 865 G4double ScaleFactor( 1.0 );
708 x = 1.0 - std::sqrt( r ); << 866
>> 867 const G4int maxNumberOfLoops = 1000;
>> 868 G4int loopCounter = 0;
>> 869 do {
>> 870 NumberOfTries++;
>> 871 if ( NumberOfTries == 100*(NumberOfTries/100) ) {
>> 872 // At large number of tries it would be better to reduce the values of <Pt^2>
>> 873 ScaleFactor /= 2.0;
>> 874 AveragePt2 *= ScaleFactor;
709 } 875 }
710 } else { << 876 G4ThreeVector PtSum( 0.0, 0.0, 0.0 );
711 x = sqr( std::sin( pi/2.0*r ) ); << 877 for( G4int i = 0; i < 4; i++ ) {
>> 878 Quark_Mom[i] = GaussianPt( AveragePt2, maxPtSquare );
>> 879 PtSum += Quark_Mom[i];
>> 880 }
>> 881 PtSum /= 4.0;
>> 882 SumMt = 0.0;
>> 883 for ( G4int i = 0; i < 4; i++ ) {
>> 884 Quark_Mom[i] -= PtSum;
>> 885 //ModMom[i] = Quark_Mom[i].mag();
>> 886 ModMom2[i] = Quark_Mom[i].mag2();
>> 887 SumMt += std::sqrt( ModMom2[i] + MassQ2 );
>> 888 }
>> 889 } while ( ( SumMt > SqrtS ) &&
>> 890 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */
>> 891 if ( loopCounter >= maxNumberOfLoops ) {
>> 892 return false;
712 } 893 }
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 } <<
717 894
718 if ( Product == 0.0 ) continue; << 895 G4double WminusTarget( 0.0 ), WplusProjectile( 0.0 );
719 896
720 ++NumberOfTries; << 897 // Sampling X's of anti-baryon
721 if ( NumberOfTries == 100*(NumberOfTries/1 << 898 G4double Alfa_R = 0.5;
722 // After a large number of tries, it is << 899 NumberOfTries = 0;
723 ScaleFactor /= 2.0; << 900 ScaleFactor = 1.0;
724 AveragePt2 *= ScaleFactor; << 901 G4bool Succes( true );
725 } << 902
>> 903 loopCounter = 0;
>> 904 do {
>> 905
>> 906 Succes = true;
>> 907 NumberOfTries++;
>> 908 if ( NumberOfTries == 100*(NumberOfTries/100) ) {
>> 909 // At large number of tries it would be better to reduce the values of Pt's
>> 910 ScaleFactor /= 2.0;
>> 911 }
726 912
727 G4ThreeVector PtSum( 0.0, 0.0, 0.0 ); << 913 if ( Alfa_R == 1.0 ) {
728 for( G4int i = 0; i < 4; ++i ) { << 914 G4double Xaq1 = std::sqrt( G4UniformRand() );
729 Quark_Mom[i] = GaussianPt( AveragePt2, m << 915 G4double Xaq2 = 1.0 - Xaq1;
730 PtSum += Quark_Mom[i]; << 916 Quark_Mom[0].setZ( Xaq1 ); Quark_Mom[1].setZ( Xaq2 );
731 } << 917 } else {
>> 918 G4double Xaq1 = sqr( std::sin( pi/2.0*G4UniformRand() ) );
>> 919 G4double Xaq2 = 1.0 - Xaq1;
>> 920 Quark_Mom[0].setZ( Xaq1 ); Quark_Mom[1].setZ( Xaq2 );
>> 921 }
732 922
733 PtSum /= 4.0; << 923 // Sampling X's of baryon ------------
734 for ( G4int i = 0; i < 4; ++i ) { << 924 if ( Alfa_R == 1.0 ) {
735 Quark_Mom[i] -= PtSum; << 925 G4double Xq1 = 1.0 - std::sqrt( G4UniformRand() );
736 } << 926 G4double Xq2 = 1.0 - Xq1;
>> 927 Quark_Mom[2].setZ( Xq1 ); Quark_Mom[3].setZ( Xq2 );
>> 928 } else {
>> 929 G4double Xq1 = sqr( std::sin( pi/2.0*G4UniformRand() ) );
>> 930 G4double Xq2 = 1.0 - Xq1;
>> 931 Quark_Mom[2].setZ( Xq1 ); Quark_Mom[3].setZ( Xq2 );
>> 932 }
737 933
738 Alfa = 0.0; Beta = 0.0; << 934 G4double Alfa( 0.0 ), Beta( 0.0 );
739 for ( G4int iCase = 0; iCase < 2; ++iCase << 935 for ( G4int i = 0; i < 2; i++ ) { // For Anti-baryon
740 G4int index = iCase * 2; << 936 if ( Quark_Mom[i].getZ() != 0.0 ) {
741 for ( G4int i = 0; i < 2; ++i ) { << 937 Alfa += ( ScaleFactor * ModMom2[i] + MassQ2 ) / Quark_Mom[i].getZ();
742 G4double val = ( Quark_Mom[index+i]. << 938 } else {
743 if ( iCase == 0 ) { // first string << 939 Succes = false;
744 Alfa += val; <<
745 } else { // second strin <<
746 Beta += val; <<
747 } 940 }
748 } << 941 }
749 } << 942 for ( G4int i = 2; i < 4; i++ ) { // For baryon
750 << 943 if ( Quark_Mom[i].getZ() != 0.0 ) {
751 } while ( ( std::sqrt( Alfa ) + std::sqrt( B << 944 Beta += ( ScaleFactor * ModMom2[i] + MassQ2 ) / Quark_Mom[i].getZ();
752 ++loopCounter < maxNumberOfLoops ) << 945 } else {
>> 946 Succes = false;
>> 947 }
>> 948 }
753 949
754 if ( loopCounter >= maxNumberOfLoops ) { << 950 if ( ! Succes ) continue;
755 return 99; // unsuccessfully ended, nothi <<
756 } <<
757 951
758 G4double DecayMomentum2 = sqr(common.S) + sq << 952 if ( std::sqrt( Alfa ) + std::sqrt( Beta ) > SqrtS ) {
759 - 2.0*( common.S*( << 953 Succes = false;
760 WminusTarget = ( common.S - Alfa + Beta + st << 954 continue;
761 WplusProjectile = common.SqrtS - Beta/Wminus << 955 }
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 } <<
774 956
775 G4int CandidatsN = 0, CandAQ[9][2] = {}, Can << 957 G4double DecayMomentum2 = S*S + Alfa*Alfa + Beta*Beta
776 G4int LeftAQ1 = 0, LeftAQ2 = 0, LeftQ1 = 0, << 958 - 2.0*S*Alfa - 2.0*S*Beta - 2.0*Alfa*Beta;
777 for ( G4int iAQ = 0; iAQ < 3; ++iAQ ) { // << 959 WminusTarget = ( S - Alfa + Beta + std::sqrt( DecayMomentum2 ) ) / 2.0 / SqrtS;
778 for ( G4int iQ = 0; iQ < 3; ++iQ ) { // << 960 WplusProjectile = SqrtS - Beta/WminusTarget;
779 if ( -common.AQ[iAQ] == common.Q[iQ] ) { << 961
780 // Here "0", "1", "2" means, respectiv << 962 } while ( ( ! Succes ) &&
781 // of the (anti-baryon) projectile or << 963 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */
782 if ( iAQ == 0 ) { CandAQ[CandidatsN][0 << 964 if ( loopCounter >= maxNumberOfLoops ) {
783 if ( iAQ == 1 ) { CandAQ[CandidatsN][0 << 965 return false;
784 if ( iAQ == 2 ) { CandAQ[CandidatsN][0 <<
785 if ( iQ == 0 ) { CandQ[CandidatsN][0] <<
786 if ( iQ == 1 ) { CandQ[CandidatsN][0] <<
787 if ( iQ == 2 ) { CandQ[CandidatsN][0] <<
788 ++CandidatsN; <<
789 } 966 }
790 } <<
791 } <<
792 967
793 if ( CandidatsN != 0 ) { << 968 G4double SqrtScaleF = std::sqrt( ScaleFactor );
794 G4int SampledCase = (G4int)G4RandFlat::sho <<
795 LeftAQ1 = common.AQ[ CandAQ[SampledCase][0 <<
796 LeftAQ2 = common.AQ[ CandAQ[SampledCase][1 <<
797 if ( G4UniformRand() < 0.5 ) { <<
798 LeftQ1 = common.Q[ CandQ[SampledCase][0] <<
799 LeftQ2 = common.Q[ CandQ[SampledCase][1] <<
800 } else { <<
801 LeftQ2 = common.Q[ CandQ[SampledCase][0] <<
802 LeftQ1 = common.Q[ CandQ[SampledCase][1] <<
803 } <<
804 969
805 // Set the string properties << 970 for ( G4int i = 0; i < 2; i++ ) {
806 // An anti quark - quark pair can have the << 971 G4double Pz = WplusProjectile * Quark_Mom[i].getZ() / 2.0 -
807 // or a vector meson: the last digit of th << 972 ( ScaleFactor * ModMom2[i] + MassQ2 ) /
808 // For simplicity only scalar is considere << 973 ( 2.0 * WplusProjectile * Quark_Mom[i].getZ() );
809 G4int NewCode = 0, antiQuark = 0, quark = << 974 Quark_Mom[i].setZ( Pz );
810 G4ParticleDefinition* TestParticle = nullp << 975 if ( ScaleFactor != 1.0 ) {
811 for ( G4int iString = 0; iString < 2; ++iS << 976 Quark_Mom[i].setX( SqrtScaleF * Quark_Mom[i].getX() );
812 if ( iString == 0 ) { << 977 Quark_Mom[i].setY( SqrtScaleF * Quark_Mom[i].getY() );
813 antiQuark = LeftAQ1; quark = LeftQ1; <<
814 projectile->SetFirstParton( antiQuark <<
815 projectile->SetSecondParton( quark ); <<
816 projectile->SetStatus( 0 ); <<
817 } else { // iString == 1 <<
818 quark = LeftQ2; antiQuark = LeftAQ2; <<
819 target->SetFirstParton( quark ); <<
820 target->SetSecondParton( antiQuark ); <<
821 target->SetStatus( 0 ); <<
822 } <<
823 G4int absAntiQuark = std::abs( antiQuark <<
824 G4double aKsi = G4UniformRand(); <<
825 if ( absAntiQuark == absQuark ) { <<
826 if ( absAntiQuark != 3 ) { <<
827 NewCode = 111; // Pi0-meson <<
828 if ( aKsi < 0.5 ) { <<
829 NewCode = 221; // Eta -meso <<
830 if ( aKsi < 0.25 ) { <<
831 NewCode = 331; // Eta'-meso <<
832 } <<
833 } <<
834 } else { <<
835 NewCode = 221; // Eta -meso <<
836 if ( aKsi < 0.5 ) { <<
837 NewCode = 331; // Eta'-meso <<
838 } <<
839 } <<
840 } else { <<
841 if ( absAntiQuark > absQuark ) { <<
842 NewCode = absAntiQuark*100 + absQuar <<
843 } else { <<
844 NewCode = absQuark*100 + absAntiQuar <<
845 } 978 }
>> 979 //G4cout << "Anti Q " << i << " " << Quark_Mom[i] << G4endl;
846 } 980 }
847 TestParticle = G4ParticleTable::GetParti << 981 for ( G4int i = 2; i < 4; i++ ) {
848 if ( ! TestParticle ) return 99; // uns << 982 G4double Pz = -WminusTarget * Quark_Mom[i].getZ() / 2.0 +
849 if ( iString == 0 ) { << 983 ( ScaleFactor * ModMom2[i] + MassQ2 ) /
850 projectile->SetDefinition( TestParticl << 984 ( 2.0 * WminusTarget * Quark_Mom[i].getZ() );
851 theParameters->SetProjMinDiffMass( 0.5 << 985 Quark_Mom[i].setZ( Pz );
852 theParameters->SetProjMinNonDiffMass( << 986 if ( ScaleFactor != 1.0 ) {
853 } else { // iString == 1 << 987 Quark_Mom[i].setX( SqrtScaleF * Quark_Mom[i].getX() );
854 target->SetDefinition( TestParticle ); << 988 Quark_Mom[i].setY( SqrtScaleF * Quark_Mom[i].getY() );
855 theParameters->SetTarMinDiffMass( 0.5 <<
856 theParameters->SetTarMinNonDiffMass( 0 <<
857 } <<
858 } // End of loop over the 2 string cases <<
859 <<
860 G4int QuarkOrder[2]; <<
861 G4LorentzVector Pstring1, Pstring2; <<
862 G4double Ystring1 = 0.0, Ystring2 = 0.0; <<
863 <<
864 for ( G4int iCase = 0; iCase < 2; ++iCase <<
865 G4ThreeVector tmp = Quark_Mom[iCase] + Q <<
866 G4LorentzVector Pstring( tmp, std::sqrt( <<
867 std::sqrt( <<
868 // Add protection for rapidity = 0.5*ln <<
869 G4double Ystring = 0.0; <<
870 if ( Pstring.e() > 1.0e-30 ) { <<
871 if ( Pstring.e() + Pstring.pz() < 1.0e <<
872 Ystring = -1.0e30; // A very large <<
873 if ( Pstring.e() - Pstring.pz() < 1. <<
874 Ystring = 1.0e30; // A very large <<
875 } else { // Normal case <<
876 Ystring = Pstring.rapidity(); <<
877 } <<
878 } 989 }
>> 990 //G4cout << "Bary Q " << i << " " << Quark_Mom[i] << G4endl;
879 } 991 }
880 if ( iCase == 0 ) { // For the first st << 992 //G4cout << "Sum AQ " << Quark_Mom[0] + Quark_Mom[1] << G4endl
881 Pstring1 = Pstring; Ystring1 = Ystring << 993 // << "Sum Q " << Quark_Mom[2] + Quark_Mom[3] << G4endl;
882 } else { // For the second s <<
883 Pstring2 = Pstring; Ystring2 = Ystring <<
884 } <<
885 } <<
886 if ( Ystring1 > Ystring2 ) { <<
887 common.Pprojectile = Pstring1; common.P <<
888 QuarkOrder[0] = 0; QuarkOrder[1] = 1; <<
889 } else { <<
890 common.Pprojectile = Pstring2; common.P <<
891 QuarkOrder[0] = 1; QuarkOrder[1] = 0; <<
892 } <<
893 994
894 if ( common.RotateStrings ) { << 995 G4ThreeVector tmp = Quark_Mom[0] + Quark_Mom[2];
895 common.Pprojectile *= common.RandomRotat << 996 G4LorentzVector Pstring1( tmp, std::sqrt( Quark_Mom[0].mag2() + MassQ2 ) +
896 common.Ptarget *= common.RandomRotat << 997 std::sqrt( Quark_Mom[2].mag2() + MassQ2 ) );
897 } << 998 G4double Ystring1 = Pstring1.rapidity();
>> 999
>> 1000 //G4cout << "Mom 1 string " << G4endl << Quark_Mom[0] << G4endl << Quark_Mom[2] << G4endl
>> 1001 // << tmp << " " << tmp.mag() << G4endl;
>> 1002 //G4cout << "1 str " << Pstring1 << " " << Pstring1.mag() << " " << Ystring1 << G4endl;
>> 1003
>> 1004 tmp = Quark_Mom[1] + Quark_Mom[3];
>> 1005 G4LorentzVector Pstring2( tmp, std::sqrt( Quark_Mom[1].mag2() + MassQ2 ) +
>> 1006 std::sqrt( Quark_Mom[3].mag2() + MassQ2 ) );
>> 1007 G4double Ystring2 = Pstring2.rapidity();
>> 1008
>> 1009 //G4cout << "Mom 2 string " << G4endl <<Quark_Mom[1] << G4endl << Quark_Mom[3] << G4endl
>> 1010 // << tmp << " " << tmp.mag() << G4endl;
>> 1011 //G4cout << "2 str " << Pstring2 << " " << Pstring2.mag() << " " << Ystring2 << G4endl;
>> 1012
>> 1013 if ( Ystring1 > Ystring2 ) {
>> 1014 Pprojectile = Pstring1;
>> 1015 Ptarget = Pstring2;
>> 1016 } else {
>> 1017 Pprojectile = Pstring2;
>> 1018 Ptarget = Pstring1;
>> 1019 }
898 1020
899 common.Pprojectile.transform( common.toLab << 1021 //G4cout << "SumP CMS " << Pprojectile + Ptarget << " " << SqrtS << G4endl;
900 common.Ptarget.transform( common.toLab ); << 1022 Pprojectile.transform( toLab );
901 << 1023 Ptarget.transform( toLab );
902 G4LorentzVector Quark_4Mom[4]; << 1024 //G4cout << " SumP Lab " << Pprojectile + Ptarget << " " << SqrtS << G4endl;
903 for ( G4int i = 0; i < 4; ++i ) { << 1025
904 Quark_4Mom[i] = G4LorentzVector( Quark_M << 1026 // Calculation of the creation time
905 if ( common.RotateStrings ) Quark_4Mom[i << 1027 projectile->SetTimeOfCreation( target->GetTimeOfCreation() );
906 Quark_4Mom[i].transform( common.toLab ); << 1028 projectile->SetPosition( target->GetPosition() );
907 } << 1029 // Creation time and position of target nucleon were determined in
>> 1030 // ReggeonCascade() of G4FTFModel
>> 1031 //G4cout << "Mproj " << Pprojectile.mag() << G4endl << "Mtarg " << Ptarget.mag() << G4endl;
>> 1032 projectile->Set4Momentum( Pprojectile );
>> 1033 target->Set4Momentum( Ptarget );
>> 1034 projectile->IncrementCollisionCount( 1 );
>> 1035 target->IncrementCollisionCount( 1 );
908 1036
909 projectile->Splitting(); << 1037 theParameters->SetProbabilityOfAnnihilation( 0.0 ); // Uzhi March 2016
910 projectile->GetNextAntiParton()->Set4Momen <<
911 projectile->GetNextParton()->Set4Momentum( <<
912 <<
913 target->Splitting(); <<
914 target->GetNextParton()->Set4Momentum( Qua <<
915 target->GetNextAntiParton()->Set4Momentum( <<
916 1038
917 // Calculation of the creation time << 1039 return true;
918 // Creation time and position of target nu <<
919 projectile->SetTimeOfCreation( target->Get <<
920 projectile->SetPosition( target->GetPositi <<
921 projectile->Set4Momentum( common.Pprojecti <<
922 target->Set4Momentum( common.Ptarget ); <<
923 1040
924 projectile->IncrementCollisionCount( 1 ); << 1041 } // End of if ( CandidatsN != 0 )
925 target->IncrementCollisionCount( 1 ); <<
926 1042
927 return 0; // Completed successfully: noth << 1043 } // End of if ( Ksi < ( X_a + X_b + X_c ) / Xannihilation )
928 } // End of if ( CandidatsN != 0 ) <<
929 1044
930 return 1; // Successfully ended, but the wo << 1045 // Simulation of anti-quark-quark string creation
931 } <<
932 1046
>> 1047 if ( Ksi < ( X_a + X_b + X_c + X_d ) / Xannihilation ) {
933 1048
934 //-------------------------------------------- << 1049 #ifdef debugFTFannih
>> 1050 G4cout << "Process d, only 1 quark - anti-quark string" << G4endl;
>> 1051 #endif
935 1052
936 G4bool G4FTFAnnihilation:: << 1053 G4int CandidatsN( 0 ), CandAQ[36], CandQ[36];
937 Create1QuarkAntiQuarkString( G4VSplitableHadro << 1054 G4int LeftAQ( 0 ), LeftQ( 0 );
938 G4VSplitableHadro <<
939 G4FTFParameters* <<
940 G4FTFAnnihilation <<
941 // Simulation of anti-quark - quark string c <<
942 1055
943 #ifdef debugFTFannih << 1056 for ( G4int iAQ1 = 0; iAQ1 < 3; iAQ1++ ) {
944 G4cout << "Process d, only 1 quark - anti-qu << 1057 for ( G4int iAQ2 = 0; iAQ2 < 3; iAQ2++ ) {
945 #endif << 1058 if ( iAQ1 != iAQ2 ) {
946 << 1059 for ( G4int iQ1 = 0; iQ1 < 3; iQ1++ ) {
947 // Determine the set of candidates anti-quar << 1060 for ( G4int iQ2 = 0; iQ2 < 3; iQ2++ ) {
948 // Here "0", "1", "2" means, respectively, " << 1061 if ( iQ1 != iQ2 ) {
949 // of the (anti-baryon) projectile or (nucle << 1062 if ( -AQ[iAQ1] == Q[iQ1] && -AQ[iAQ2] == Q[iQ2] ) {
950 G4int CandidatsN = 0, CandAQ[36], CandQ[36]; << 1063 if ( iAQ1 == 0 && iAQ2 == 1 ) { CandAQ[CandidatsN] = 2; }
951 G4int LeftAQ = 0, LeftQ = 0; << 1064 if ( iAQ1 == 1 && iAQ2 == 0 ) { CandAQ[CandidatsN] = 2; }
952 for ( G4int iAQ1 = 0; iAQ1 < 3; ++iAQ1 ) { << 1065
953 for ( G4int iAQ2 = 0; iAQ2 < 3; ++iAQ2 ) { << 1066 if ( iAQ1 == 0 && iAQ2 == 2 ) { CandAQ[CandidatsN] = 1; }
954 if ( iAQ1 != iAQ2 ) { << 1067 if ( iAQ1 == 2 && iAQ2 == 0 ) { CandAQ[CandidatsN] = 1; }
955 for ( G4int iQ1 = 0; iQ1 < 3; ++iQ1 ) << 1068
956 for ( G4int iQ2 = 0; iQ2 < 3; ++iQ2 << 1069 if ( iAQ1 == 1 && iAQ2 == 2 ) { CandAQ[CandidatsN] = 0; }
957 if ( iQ1 != iQ2 ) { << 1070 if ( iAQ1 == 2 && iAQ2 == 1 ) { CandAQ[CandidatsN] = 0; }
958 if ( -common.AQ[iAQ1] == common. << 1071
959 if ( ( iAQ1 == 0 && i << 1072 if ( iQ1 == 0 && iQ2 == 1 ) { CandQ[CandidatsN] = 2; }
960 CandAQ[CandidatsN] = 2; << 1073 if ( iQ1 == 1 && iQ2 == 0 ) { CandQ[CandidatsN] = 2; }
961 } else if ( ( iAQ1 == 0 && i << 1074
962 CandAQ[CandidatsN] = 1; << 1075 if ( iQ1 == 0 && iQ2 == 2 ) { CandQ[CandidatsN] = 1; }
963 } else if ( ( iAQ1 == 1 && i << 1076 if ( iQ1 == 2 && iQ2 == 0 ) { CandQ[CandidatsN] = 1; }
964 CandAQ[CandidatsN] = 0; << 1077
>> 1078 if ( iQ1 == 1 && iQ2 == 2 ) { CandQ[CandidatsN] = 0; }
>> 1079 if ( iQ1 == 2 && iQ2 == 1 ) { CandQ[CandidatsN] = 0; }
>> 1080 CandidatsN++;
965 } 1081 }
966 if ( ( iQ1 == 0 && <<
967 CandQ[CandidatsN] = 2; <<
968 } else if ( ( iQ1 == 0 && <<
969 CandQ[CandidatsN] = 1; <<
970 } else if ( ( iQ1 == 1 && <<
971 CandQ[CandidatsN] = 0; <<
972 } <<
973 ++CandidatsN; <<
974 } 1082 }
975 } 1083 }
976 } 1084 }
977 } 1085 }
978 } 1086 }
979 } 1087 }
980 } <<
981 <<
982 if ( CandidatsN != 0 ) { <<
983 G4int SampledCase = (G4int)G4RandFlat::sho <<
984 LeftAQ = common.AQ[ CandAQ[SampledCase] ]; <<
985 LeftQ = common.Q[ CandQ[SampledCase] ]; <<
986 <<
987 // Set the string properties <<
988 projectile->SetFirstParton( LeftQ ); <<
989 projectile->SetSecondParton( LeftAQ ); <<
990 projectile->SetStatus( 0 ); <<
991 G4int aAQ = std::abs( LeftAQ ), aQ = std:: <<
992 G4int NewCode = 0; <<
993 G4double aKsi = G4UniformRand(); <<
994 // The string can have the quantum number <<
995 // of the PDG code is, respectively, 1 and <<
996 if ( aAQ == aQ ) { <<
997 if ( aAQ != 3 ) { <<
998 NewCode = 111; // Pi0-meson <<
999 if ( aKsi < 0.5 ) { <<
1000 NewCode = 221; // Eta -meson <<
1001 if ( aKsi < 0.25 ) { <<
1002 NewCode = 331; // Eta'-meson <<
1003 } <<
1004 } <<
1005 } else { <<
1006 NewCode = 221; // Eta -meson <<
1007 if ( aKsi < 0.5 ) { <<
1008 NewCode = 331; // Eta'-meson <<
1009 } <<
1010 } <<
1011 } else { <<
1012 if ( aAQ > aQ ) { <<
1013 NewCode = aAQ*100 + aQ*10 + 1; NewCod <<
1014 } else { <<
1015 NewCode = aQ*100 + aAQ*10 + 1; NewCod <<
1016 } <<
1017 } <<
1018 1088
1019 G4ParticleDefinition* TestParticle = G4Pa << 1089 if ( CandidatsN != 0 ) {
1020 if ( ! TestParticle ) return false; << 1090 G4int SampledCase = G4RandFlat::shootInt( G4long( CandidatsN ) );
1021 projectile->SetDefinition( TestParticle ) << 1091 LeftAQ = AQ[ CandAQ[SampledCase] ];
1022 theParameters->SetProjMinDiffMass( 0.5 ); << 1092 LeftQ = Q[ CandQ[SampledCase] ];
1023 theParameters->SetProjMinNonDiffMass( 0.5 << 1093 //G4cout << "Left Aq Q " << LeftAQ << " " << LeftQ << G4endl;
1024 << 1094
1025 target->SetStatus( 4 ); // The target nu << 1095 // Set the string properties
1026 common.Pprojectile.setPx( 0.0 ); << 1096 projectile->SplitUp();
1027 common.Pprojectile.setPy( 0.0 ); << 1097 //projectile->SetFirstParton( LeftAQ );
1028 common.Pprojectile.setPz( 0.0 ); << 1098 //projectile->SetSecondParton( LeftQ );
1029 common.Pprojectile.setE( common.SqrtS ); << 1099 projectile->SetFirstParton( LeftQ );
>> 1100 projectile->SetSecondParton( LeftAQ );
>> 1101 projectile->SetStatus( 0 );
1030 1102
1031 common.Pprojectile.transform( common.toLa << 1103 // Uzhi March 2016 start
>> 1104 G4int aAQ, aQ;
>> 1105 aAQ=std::abs( LeftAQ ); aQ=std::abs( LeftQ );
>> 1106
>> 1107 G4int NewCode;
>> 1108 G4double aKsi = G4UniformRand();
>> 1109
>> 1110 if ( aAQ == aQ )
>> 1111 {
>> 1112 if ( aAQ != 3 )
>> 1113 {
>> 1114 NewCode = 111; // Pi0-meson
>> 1115 if ( aKsi < 0.5 )
>> 1116 {
>> 1117 NewCode = 221; // Eta -meson
>> 1118 if ( aKsi < 0.25 ) {NewCode = 331;} // Eta'-meson
>> 1119 }
>> 1120 } else
>> 1121 {
>> 1122 NewCode = 221; // Eta -meson
>> 1123 if( aKsi < 0.5 ) {NewCode = 331;} // Eta'-meson
>> 1124 }
>> 1125 } else
>> 1126 {
>> 1127 if ( aAQ > aQ ){ NewCode = aAQ*100 + aQ*10 + 1; NewCode *= aAQ/LeftAQ; }
>> 1128 else { NewCode = aQ*100 + aAQ*10 + 1; NewCode *= aQ/LeftQ; }
>> 1129 }
1032 1130
1033 G4LorentzVector Pquark = G4LorentzVector << 1131 G4ParticleDefinition* TestParticle = G4ParticleTable::GetParticleTable()->FindParticle( NewCode );
1034 G4LorentzVector Paquark = G4LorentzVector << 1132 if(!TestParticle) return false;
>> 1133 projectile->SetDefinition( TestParticle );
>> 1134 theParameters->SetProjMinDiffMass( 0.5 ); // (0.5) // GeV Uzhi March 2016
>> 1135 theParameters->SetProjMinNonDiffMass( 0.5 );
>> 1136 // Uzhi March 2016 end
>> 1137
>> 1138 target->SetStatus( 4 ); // The target nucleon has annihilated 3->4 Uzhi Oct 2014
>> 1139 Pprojectile.setPx( 0.0 );
>> 1140 Pprojectile.setPy( 0.0 );
>> 1141 Pprojectile.setPz( 0.0 );
>> 1142 Pprojectile.setE( SqrtS );
>> 1143 Pprojectile.transform( toLab );
>> 1144
>> 1145 // Calculation of the creation time
>> 1146 projectile->SetTimeOfCreation( target->GetTimeOfCreation() );
>> 1147 projectile->SetPosition( target->GetPosition() );
>> 1148 // Creation time and position of target nucleon were determined in
>> 1149 // ReggeonCascade() of G4FTFModel
1035 1150
1036 if ( common.RotateStrings ) { << 1151 //G4cout << "Mproj " << Pprojectile.mag() << G4endl << "Mtarg " << Ptarget.mag() << G4endl;
1037 Pquark *= common.RandomRotation; Paquar << 1152 projectile->Set4Momentum( Pprojectile );
1038 } <<
1039 Pquark.transform(common.toLab); projecti <<
1040 Paquark.transform(common.toLab); projecti <<
1041 1153
1042 projectile->Splitting(); << 1154 projectile->IncrementCollisionCount( 1 );
>> 1155 target->IncrementCollisionCount( 1 );
1043 1156
1044 // Calculation of the creation time << 1157 theParameters->SetProbabilityOfAnnihilation( 0.0 ); // Uzhi March 2016
1045 // Creation time and position of target n <<
1046 projectile->SetTimeOfCreation( target->Ge <<
1047 projectile->SetPosition( target->GetPosit <<
1048 projectile->Set4Momentum( common.Pproject <<
1049 1158
1050 projectile->IncrementCollisionCount( 1 ); << 1159 return true;
1051 target->IncrementCollisionCount( 1 ); << 1160 }
1052 1161
1053 return true; << 1162 } // End of if ( Ksi < ( X_a + X_b + X_c + X_d ) / Xannihilation )
1054 } // End of if ( CandidatsN != 0 ) <<
1055 1163
>> 1164 //G4cout << "Pr Y " << Pprojectile.rapidity() << " Tr Y " << Ptarget.rapidity() << G4endl;
1056 return true; 1165 return true;
1057 } 1166 }
1058 1167
1059 1168
1060 //=========================================== 1169 //============================================================================
1061 1170
1062 G4double G4FTFAnnihilation::ChooseX( G4double 1171 G4double G4FTFAnnihilation::ChooseX( G4double /* Alpha */, G4double /* Beta */ ) const {
1063 // If for sampling Xs other values of Alfa 1172 // If for sampling Xs other values of Alfa and Beta instead of 0.5 will be
1064 // chosen the method will be implemented 1173 // chosen the method will be implemented
1065 //G4double tmp = Alpha*Beta; 1174 //G4double tmp = Alpha*Beta;
1066 //tmp *= 1.0; 1175 //tmp *= 1.0;
1067 return 0.5; 1176 return 0.5;
1068 } 1177 }
1069 1178
1070 1179
>> 1180
1071 //=========================================== 1181 //============================================================================
1072 1182
1073 G4ThreeVector G4FTFAnnihilation::GaussianPt( 1183 G4ThreeVector G4FTFAnnihilation::GaussianPt( G4double AveragePt2, G4double maxPtSquare ) const {
1074 // @@ this method is used in FTFModel as w 1184 // @@ this method is used in FTFModel as well. Should go somewhere common!
1075 G4double Pt2 = 0.0; << 1185 G4double Pt2( 0.0 );
1076 if ( AveragePt2 <= 0.0 ) { 1186 if ( AveragePt2 <= 0.0 ) {
1077 Pt2 = 0.0; 1187 Pt2 = 0.0;
1078 } else { 1188 } else {
1079 Pt2 = -AveragePt2 * G4Log( 1.0 + G4Unifor 1189 Pt2 = -AveragePt2 * G4Log( 1.0 + G4UniformRand() *
1080 ( G4E 1190 ( G4Exp( -maxPtSquare/AveragePt2 ) -1.0 ) );
1081 } 1191 }
1082 G4double Pt = std::sqrt( Pt2 ); 1192 G4double Pt = std::sqrt( Pt2 );
1083 G4double phi = G4UniformRand() * twopi; 1193 G4double phi = G4UniformRand() * twopi;
1084 return G4ThreeVector ( Pt*std::cos( phi ), 1194 return G4ThreeVector ( Pt*std::cos( phi ), Pt*std::sin( phi ), 0.0 );
1085 } 1195 }
1086 1196
1087 1197
1088 //=========================================== 1198 //============================================================================
1089 1199
1090 void G4FTFAnnihilation::UnpackBaryon( G4int I 1200 void G4FTFAnnihilation::UnpackBaryon( G4int IdPDG, G4int& Q1, G4int& Q2, G4int& Q3 ) const {
1091 G4int AbsId = std::abs( IdPDG ); 1201 G4int AbsId = std::abs( IdPDG );
1092 Q1 = AbsId / 1000; 1202 Q1 = AbsId / 1000;
1093 Q2 = ( AbsId % 1000 ) / 100; 1203 Q2 = ( AbsId % 1000 ) / 100;
1094 Q3 = ( AbsId % 100 ) / 10; 1204 Q3 = ( AbsId % 100 ) / 10;
1095 if ( IdPDG < 0 ) { Q1 = -Q1; Q2 = -Q2; Q3 = 1205 if ( IdPDG < 0 ) { Q1 = -Q1; Q2 = -Q2; Q3 = -Q3; } // Anti-baryon
1096 return; 1206 return;
1097 } 1207 }
1098 1208
1099 1209
1100 //=========================================== 1210 //============================================================================
1101 1211
1102 G4FTFAnnihilation::G4FTFAnnihilation( const G 1212 G4FTFAnnihilation::G4FTFAnnihilation( const G4FTFAnnihilation& ) {
1103 throw G4HadronicException( __FILE__, __LINE 1213 throw G4HadronicException( __FILE__, __LINE__,
1104 "G4FTFAnnihilati << 1214 "G4FTFAnnihilation copy contructor not meant to be called" );
1105 } 1215 }
1106 1216
1107 1217
1108 //=========================================== 1218 //============================================================================
1109 1219
1110 const G4FTFAnnihilation & G4FTFAnnihilation:: 1220 const G4FTFAnnihilation & G4FTFAnnihilation::operator=( const G4FTFAnnihilation& ) {
1111 throw G4HadronicException( __FILE__, __LINE 1221 throw G4HadronicException( __FILE__, __LINE__,
1112 "G4FTFAnnihilati 1222 "G4FTFAnnihilation = operator not meant to be called" );
1113 } 1223 }
1114 1224
1115 1225
1116 //=========================================== 1226 //============================================================================
1117 1227
1118 G4bool G4FTFAnnihilation::operator==( const G << 1228 int G4FTFAnnihilation::operator==( const G4FTFAnnihilation& ) const {
1119 throw G4HadronicException( __FILE__, __LINE 1229 throw G4HadronicException( __FILE__, __LINE__,
1120 "G4FTFAnnihilati 1230 "G4FTFAnnihilation == operator not meant to be called" );
1121 } 1231 }
1122 1232
1123 1233
1124 //=========================================== 1234 //============================================================================
1125 1235
1126 G4bool G4FTFAnnihilation::operator!=( const G << 1236 int G4FTFAnnihilation::operator!=( const G4FTFAnnihilation& ) const {
1127 throw G4HadronicException( __FILE__, __LINE 1237 throw G4HadronicException( __FILE__, __LINE__,
1128 "G4DiffractiveEx 1238 "G4DiffractiveExcitation != operator not meant to be called" );
1129 } 1239 }
1130 1240