Geant4 11.2.2
Toolkit for the simulation of the passage of particles through matter
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Public Member Functions | List of all members
G4Reggeons Class Reference

#include <G4Reggeons.hh>

Public Member Functions

 G4Reggeons (const G4ParticleDefinition *)
 
G4double Get_Cprojectile ()
 
G4double Get_Ctarget ()
 
 ~G4Reggeons ()
 
void SetS (G4double S)
 
void CalculateXs ()
 
G4double Chi_pomeron (G4double Mult, G4double B)
 
G4double Chi_reggeon (G4double Mult, G4double B)
 
G4double GetTotalX ()
 
G4double GetTotalXp ()
 
G4double GetTotalXr ()
 
G4double GetElasticX ()
 
G4double GetPrDiffX ()
 
G4double GetTrDiffX ()
 
G4double GetDDiffX ()
 
G4double GetInelX ()
 
G4double GetND_X ()
 
G4double GetNDp_X ()
 
G4double GetNDr_X ()
 
void GetProbabilities (G4double B, G4int Mode, G4double &Pint, G4double &Pprd, G4double &Ptrd, G4double &Pdd, G4double &Pnd, G4double &Pnvr)
 
G4int ncPomerons ()
 

Detailed Description

Definition at line 46 of file G4Reggeons.hh.

Constructor & Destructor Documentation

◆ G4Reggeons()

G4Reggeons::G4Reggeons ( const G4ParticleDefinition * particle)

Definition at line 37 of file G4Reggeons.cc.

38{
39 // Kaidalov&Piskunova Orig
40 Alpha_pomeron = 1.12; //0.9808;
41 Alphaprime_pomeron = 0.22/GeV/GeV; //0.25/GeV/GeV;
42 S0_pomeron = 1.0*GeV*GeV; //2.7*GeV*GeV;
43
44 Alpha_pomeronHard = 1.47;
45 Gamma_pomeronHard = 0.0/GeV/GeV;
46
47 G4int PDGcode = particle->GetPDGEncoding();
48 G4int absPDGcode = std::abs(PDGcode);
49
50 //-------------------------------------------------------
51 // Kaidalov&Piskunova Orig
52 G4double C_pomeron_NN = 1.5;
53 G4double C_pomeron_N = std::sqrt(C_pomeron_NN);
54
55 G4double Gamma_pomeron_NN = 2.14/GeV/GeV; //(2.6+3.96)
56 G4double Gamma_pomeron_N = std::sqrt(Gamma_pomeron_NN);
57 G4double Gamma_pomeron_Pr(0.), Gamma_pomeron_Tr(0.);
58
59 G4double Rsquare_pomeron_NN = 3.30/GeV/GeV; //3.56
60 G4double Rsquare_pomeron_N = Rsquare_pomeron_NN/2.;
61 G4double Rsquare_pomeron_Pr(0.), Rsquare_pomeron_Tr(0.);
62 //-------------------------------------------------------
63
64 // Copied from G4HadronNucleonXsc::HyperonNucleonXscNS(...)
65 G4double coeff = 1.0;
66 static const G4double lBarCof1S = 0.88;
67 static const G4double lBarCof2S = 0.76;
68 static const G4double lBarCof3S = 0.64;
69 static const G4double lBarCof1C = 0.784378;
70 static const G4double lBarCofSC = 0.664378;
71 static const G4double lBarCof2SC = 0.544378;
72 static const G4double lBarCof1B = 0.740659;
73 static const G4double lBarCofSB = 0.620659;
74 static const G4double lBarCof2SB = 0.500659;
75 // End of Copied from G4HadronNucleonXsc::HyperonNucleonXscNS(...)
76
77 // Copied from G4HadronNucleonXsc::SCBMesonNucleonXscNS(...)
78 static const G4double llMesCof1C = 0.676568;
79 static const G4double llMesCof1B = 0.610989;
80 static const G4double llMesCof2C = 0.353135;
81 static const G4double llMesCof2B = 0.221978;
82 static const G4double llMesCofSC = 0.496568;
83 static const G4double llMesCofSB = 0.430989;
84 static const G4double llMesCofCB = 0.287557;
85 static const G4double llMesCofEtaP = 0.88;
86 static const G4double llMesCofEta = 0.76;
87 // End of Copied from G4HadronNucleonXsc::SCBMesonNucleonXscNS(...)
88
89 if ( absPDGcode > 1000 ) { // Projectile is baryon or anti_baryon --------
90
91 Cpr_pomeron = C_pomeron_N; // Shower enhancement coefficient for projectile
92 Ctr_pomeron = C_pomeron_N; // Shower enhancement coefficient for target
93 C_pomeron = Cpr_pomeron*Ctr_pomeron;
94
95 Gamma_pomeron_Pr = Gamma_pomeron_N; // vertex constant for projectile
96 Gamma_pomeron_Tr = Gamma_pomeron_N; // vertex constant for target
97 Gamma_pomeron = Gamma_pomeron_Pr * Gamma_pomeron_Tr;
98
99 Rsquare_pomeron_Pr = Rsquare_pomeron_N; // R^2 of pomeron-projectile interaction
100 Rsquare_pomeron_Tr = Rsquare_pomeron_N; // R^2 of pomeron-target interaction
101 Rsquare_pomeron = Rsquare_pomeron_Pr + Rsquare_pomeron_Tr;
102
103 Freggeon_Alpha = 0.7; // Intersept of f-trajectory
104 Freggeon_Alphaprime = 0.8/GeV/GeV; // Slope of f-trajectory
105 Freggeon_Gamma = sqr(2.871)/GeV/GeV; // Vertex constant of f-meson - nucleon interactions
106 Freggeon_Rsquare = 2*0.916/GeV/GeV; // R^2 of f-meson - nucleon interactions
107 Freggeon_C = 1.0; // Shower enhancement coefficient
108 FParity = +1; // Parity of the trajectory
109
110 Wreggeon_Alpha = 0.4; // Intersept of omega-trajectory (w)
111 Wreggeon_Alphaprime = 0.9/GeV/GeV; // Slope of w-trajectory
112 Wreggeon_Gamma = sqr(2.241)/GeV/GeV; // Vertex constant of w-meson - nucleon interactions
113 Wreggeon_Rsquare = 2*0.945/GeV/GeV *0.5; // R^2 of w-meson - nucleon interactions
114 Wreggeon_C = 1.0; // Shower enhancement coefficient
115 if (PDGcode > 0) WParity = -1; // Parity +1 for Pbar P, and -1 for PP interactions
116 if (PDGcode < 0) WParity = +1;
117
118 // Copied from G4HadronNucleonXsc::HyperonNucleonXscNS(...)
119 if ( PDGcode == 3122 || PDGcode == 3222 || // Lambda or Sigma+ or
120 PDGcode == 3112 || PDGcode == 3212 || // Sigma- or Sigma0 or
121 PDGcode ==-3122 || PDGcode ==-3222 || // anti_Lambda or anti_Sigma+ or
122 PDGcode ==-3112 || PDGcode ==-3212 ) { // anti_Sigma- or anti_Sigma0
123 coeff = lBarCof1S;
124 }
125 if ( PDGcode == 3312 || PDGcode == 3322 || // Xi- or Xi0 or
126 PDGcode ==-3312 || PDGcode ==-3322 ) { // anti_Xi- or anti_Xi0
127 coeff = lBarCof2S;
128 }
129 if ( PDGcode == 3334 || PDGcode ==-3334 ) { // Omega- or anti_Omega-
130 coeff = lBarCof3S;
131 }
132 if ( PDGcode == 4122 || PDGcode ==-4122 || // Lambda_c+ or anti_Lambda_c+ or
133 PDGcode == 4222 || PDGcode ==-4222 || // Sigma_c++ or anti_Sigma_c++ or
134 PDGcode == 4212 || PDGcode ==-4212 || // Sigma_c+ or anti_Sigma_c+ or
135 PDGcode == 4112 || PDGcode ==-4112 ) { // Sigma_c0 or anti_Sigma_c0
136 coeff = lBarCof1C;
137 }
138 if ( PDGcode == 4332 || PDGcode ==-4332 ) { // Omega_c0 or anti_Omega_c0
139 coeff = lBarCof2SC;
140 }
141 if ( PDGcode == 4232 || PDGcode == 4132 || // Xi_c+ or Xi_c0 or
142 PDGcode ==-4232 || PDGcode ==-4132 ) { // anti_Xi_c+ or anti_Xi_c0
143 coeff = lBarCofSC;
144 }
145 if ( PDGcode == 5122 || PDGcode ==-5122 || // Lambda_b0 or anti_Lambda_b0 or
146 PDGcode == 5222 || PDGcode ==-5222 || // Sigma_b+ or anti_Sigma_b+ or
147 PDGcode == 5112 || PDGcode ==-5112 || // Sigma_b- or anti_Sigma_b- or
148 PDGcode == 5212 || PDGcode ==-5212 ) { // Sigma_b0 or anti_Sigma_b0
149 coeff = lBarCof1B;
150 }
151 if ( PDGcode == 5332 || PDGcode ==-5332 ) { // Omega_b- or anti_Omega_b-
152 coeff = lBarCof2SB;
153 }
154 if ( PDGcode == 5132 || PDGcode == 5232 || // Xi_b- or Xi_b0 or
155 PDGcode ==-5132 || PDGcode ==-5232 ) { // anti_Xi_b- or anti_Xi_b0
156 coeff = lBarCofSB;
157 }
158 // End of Copied from G4HadronNucleonXsc::HyperonNucleonXscNS(...)
159
160 Gamma_pomeron_Pr *= coeff;
161
162 } else if ( absPDGcode == 211 || PDGcode == 111 || absPDGcode >= 400 ) { // Projectile is a nonstrange meson
163
164 Cpr_pomeron = 1.352;
165 Ctr_pomeron = C_pomeron_N;
166 C_pomeron = Cpr_pomeron*Ctr_pomeron;
167 // KP
168 Gamma_pomeron_Pr = 0.89/GeV; // 0.85 -> 0.89 // Uzhi
169 Gamma_pomeron_Tr = Gamma_pomeron_N;
170 Gamma_pomeron = Gamma_pomeron_Pr * Gamma_pomeron_Tr;
171
172 Rsquare_pomeron_Pr = 0.5/GeV/GeV;
173 Rsquare_pomeron_Tr = Rsquare_pomeron_N;
174 Rsquare_pomeron = Rsquare_pomeron_Pr + Rsquare_pomeron_Tr;
175
176 Freggeon_Alpha = 0.7;
177 Freggeon_Alphaprime = 0.8/GeV/GeV;
178 Freggeon_Gamma = 3.524/GeV/GeV;
179 Freggeon_Rsquare = 1.0/GeV/GeV;
180 Freggeon_C = 1.0;
181 FParity = +1;
182
183 Wreggeon_Alpha = 0.5;
184 Wreggeon_Gamma = 0.56/GeV/GeV; // 1.12 -> 0.56 Uzhi
185 Wreggeon_Rsquare = 9.19/GeV/GeV;
186 Wreggeon_Alphaprime = 0.9/GeV/GeV;
187 Wreggeon_C = 1.0;
188 if (PDGcode > 0) WParity = -1;
189 if (PDGcode < 0) WParity = +1;
190
191 // Copied from G4HadronNucleonXsc::SCBMesonNucleonXscNS(...)
192 if ( PDGcode == 511 || PDGcode ==-511 || // B0 or anti_B0 or
193 PDGcode == 521 || PDGcode ==-521 ) { // B+ or B-
194 coeff = llMesCof1B;
195 }
196 if ( PDGcode == 421 || PDGcode ==-421 || // D0 or anti_D0 or
197 PDGcode == 411 || PDGcode ==-411 ) { // D+ or D-
198 coeff = llMesCof1C;
199 }
200 if ( PDGcode == 531 || PDGcode ==-531 ) { // Bs0 or anti_Bs0 or
201 coeff = llMesCofSB;
202 }
203 if ( PDGcode == 541 || PDGcode ==-541 ) { // Bc+ or Bc-
204 coeff = llMesCofCB;
205 }
206 if ( PDGcode == 431 || PDGcode ==-431 ) { // D_s+ or D_s-
207 coeff = llMesCofSC;
208 }
209 if ( PDGcode == 441 || PDGcode == 443 ) { // Eta_c or J/psi
210 coeff = llMesCof2C;
211 }
212 if ( PDGcode == 553 ) { // Upsilon
213 coeff = llMesCof2B;
214 }
215 if ( PDGcode == 221 ) { // Eta
216 coeff = llMesCofEta;
217 }
218 if ( PDGcode == 331 ) { // Eta'
219 coeff = llMesCofEtaP;
220 }
221 // End of Copied from G4HadronNucleonXsc::SCBMesonNucleonXscNS(...)
222
223 Gamma_pomeron_Pr *= coeff;
224
225 } else if ( absPDGcode == 321 || absPDGcode == 311 ||
226 PDGcode == 130 || PDGcode == 310 ) { // Projectile is a Kaon
227
228 Cpr_pomeron = 1.522;
229 Ctr_pomeron = C_pomeron_N;
230 C_pomeron = Cpr_pomeron*Ctr_pomeron;
231
232 Gamma_pomeron_Pr = 0.90/GeV;
233 Gamma_pomeron_Tr = Gamma_pomeron_N;
234 Gamma_pomeron = Gamma_pomeron_Pr * Gamma_pomeron_Tr;
235
236 Rsquare_pomeron_Pr = 0.31/GeV/GeV;
237 Rsquare_pomeron_Tr = Rsquare_pomeron_N;
238 Rsquare_pomeron = Rsquare_pomeron_Pr + Rsquare_pomeron_Tr;
239
240 Freggeon_Alpha = 0.7;
241 Freggeon_Alphaprime = 0.8/GeV/GeV;
242 Freggeon_Gamma = 1.32/GeV/GeV;
243 Freggeon_Rsquare = 0.5/GeV/GeV;
244
245 Freggeon_C = 1.0;
246 FParity = +1;
247
248 Wreggeon_Alpha = 0.4;
249 Wreggeon_Alphaprime = 0.9 /GeV/GeV;
250 Wreggeon_Gamma = 1.68/GeV/GeV;
251 Wreggeon_Rsquare = 9.19/GeV/GeV;
252 Wreggeon_C = 1.0;
253
254 if (PDGcode > 0) WParity = -1;
255 if (PDGcode < 0) WParity = +1;
256
257 } else if ( absPDGcode == 22 ) { // Projectile is Gamma
258
259 Cpr_pomeron = 1.437;
260 Ctr_pomeron = C_pomeron_N;
261 C_pomeron = Cpr_pomeron*Ctr_pomeron;
262
263 Gamma_pomeron_Pr = 0.0035/GeV; // 1.415
264 Gamma_pomeron_Tr = Gamma_pomeron_N;
265 Gamma_pomeron = Gamma_pomeron_Pr * Gamma_pomeron_Tr;
266
267 Rsquare_pomeron_Pr = 0.51/GeV/GeV;
268 Rsquare_pomeron_Tr = Rsquare_pomeron_N;
269 Rsquare_pomeron = Rsquare_pomeron_Pr + Rsquare_pomeron_Tr;
270
271 Freggeon_Alpha = 0.7;
272 Freggeon_Alphaprime = 0.8/GeV/GeV;
273 Freggeon_Gamma = 0.011/GeV/GeV;
274 Freggeon_Rsquare = 0.5/GeV/GeV;
275 Freggeon_C = 1.0;
276 FParity = +1;
277
278 Wreggeon_Alpha = 0.;
279 Wreggeon_Alphaprime = 0.9/GeV/GeV;
280 Wreggeon_Gamma = 0.01/GeV/GeV;
281 Wreggeon_Rsquare = 1.0/GeV/GeV;
282 Wreggeon_C = 1.0;
283 WParity = +1;
284
285 } else { // Projectile is undefined, Nucleon assumed
286
287 Cpr_pomeron = C_pomeron_N;
288 Ctr_pomeron = C_pomeron_N;
289 C_pomeron = Cpr_pomeron*Ctr_pomeron;
290
291 Gamma_pomeron_Pr = Gamma_pomeron_N;
292 Gamma_pomeron_Tr = Gamma_pomeron_N;
293 Gamma_pomeron = Gamma_pomeron_Pr * Gamma_pomeron_Tr;
294
295 Rsquare_pomeron_Pr = Rsquare_pomeron_N;
296 Rsquare_pomeron_Tr = Rsquare_pomeron_N;
297 Rsquare_pomeron = Rsquare_pomeron_Pr + Rsquare_pomeron_Tr;
298
299 Freggeon_Alpha = 0.723;
300 Freggeon_Gamma = 8.801/GeV/GeV;
301 Freggeon_Rsquare = 0.396/GeV/GeV;
302 Freggeon_Alphaprime = 1.324/GeV/GeV;
303 Freggeon_C = 1.0;
304 FParity = +1;
305
306 Wreggeon_Alpha = 0.353;
307 Wreggeon_Gamma = 8.516/GeV/GeV;
308 Wreggeon_Rsquare = 24.40/GeV/GeV;
309 Wreggeon_Alphaprime = 1.5/GeV/GeV;
310 Wreggeon_C = 1.0;
311 WParity = -1;
312
313 }
314
315 chiPin=0.;
316 Xtotal =0.; XtotalP=0.; XtotalR=0.;
317 Xelastic=0.; Xpr_Diff=0.; Xtr_Diff=0.; XDDiff=0.;
318 Xinel =0.; Xnd=0.; XndP=0.; XndR=0.;
319 /*
320 G4cout<<G4endl<<"Reggeon's parameters for Particle "<<particle->GetParticleName()<<" "<<PDGcode<<G4endl<<G4endl;
321 G4cout<<"Alpha_pomeron "<<Alpha_pomeron;
322 G4cout<<" Alphaprime_pomeron "<<Alphaprime_pomeron*GeV*GeV;
323 G4cout<<" S0_pomeron "<<S0_pomeron/GeV/GeV<<G4endl;
324 G4cout<<"Gamma_pomeron "<<Gamma_pomeron*GeV*GeV;
325 G4cout<<" Rsquare_pomeron "<<Rsquare_pomeron*GeV*GeV;
326 G4cout<<" C_pomeron "<<C_pomeron<<G4endl<<G4endl;
327 G4int Uzhi; G4cin>>Uzhi;
328 */
329}
G4double
double G4double
Definition G4Types.hh:83
G4int
int G4int
Definition G4Types.hh:85
sqr
T sqr(const T &x)
Definition templates.hh:128

◆ ~G4Reggeons()

G4Reggeons::~G4Reggeons ( )

Definition at line 338 of file G4Reggeons.cc.

338{}

Member Function Documentation

◆ CalculateXs()

void G4Reggeons::CalculateXs ( )

Definition at line 344 of file G4Reggeons.cc.

345{
346 Xtotal =0.; XtotalP=0.; XtotalR=0.;
347 Xelastic=0.; Xpr_Diff=0.; Xtr_Diff=0.; XDDiff=0.; G4double XDiff=0.;
348 Xinel =0.; Xnd=0.; XndP=0.; XndR=0.;
349
350 G4double AmplitudeP(0.), AmplitudeR(0.);
351
352 G4double B_max = 10.*fermi;
353 G4double dB = B_max/10000.;
354
355 G4double B =-dB/2.;
356
357 G4double chiP(0.), chiR(0.), chiRin(0.); // chiPin Pomeron inelastic phase is a data member
358 chiPin=0.;
359 for(G4int i=0; i<10000;i++)
360 {
361 B += dB;
362
363 chiP = Chi_pomeron(1.,B); chiR = Chi_reggeon(1.,B);
364 chiPin = Chi_pomeron(2.,B); chiRin = Chi_reggeon(2.,B);
365
366 AmplitudeP = (1.0/C_pomeron)*(1.0 - G4Exp(-chiP))*G4Exp(-chiR);
367 AmplitudeR = (1.0 - G4Exp(-chiR));
368
369 Xtotal += 2 * (AmplitudeP + AmplitudeR) * B * dB;
370 XtotalP += 2 * (AmplitudeP + 0. ) * B * dB;
371 XtotalR += 2 * (0. + AmplitudeR) * B * dB;
372
373 Xelastic += sqr(AmplitudeP + AmplitudeR) * B * dB;
374 Xpr_Diff += (Cpr_pomeron - 1.0) * sqr(AmplitudeP) * B * dB;
375 Xtr_Diff += (Ctr_pomeron - 1.0) * sqr(AmplitudeP) * B * dB;
376 XDiff += (Cpr_pomeron - 1.0) * (Ctr_pomeron - 1.0) * sqr(AmplitudeP) * B * dB;
377
378 // ----------------------------------
379 AmplitudeP = (1.0/C_pomeron)*(1.0 - G4Exp(-chiPin))*G4Exp(-chiRin);
380 AmplitudeR = (1.0 - G4Exp(-chiRin));
381
382 Xnd += (AmplitudeP + AmplitudeR) * B * dB;
383 XndP += (AmplitudeP + 0. ) * B * dB;
384 XndR += (0. + AmplitudeR) * B * dB;
385 }
386
387 Xtotal *=twopi; XtotalP *=twopi; XtotalR *=twopi;
388 Xelastic *=twopi; Xpr_Diff *=twopi; Xtr_Diff *=twopi; XDiff *=twopi;
389 Xinel = Xtotal - Xelastic;
390 (void)Xinel; // To avoid compiler warning "variable not used"
391
392 Xnd *=twopi; XndP *=twopi; XndR *=twopi;
393 XDDiff = XDiff-Xpr_Diff-Xtr_Diff;
394
395 /*
396 G4cout<<"Total totalP totalR "<<Xtotal/millibarn <<" "<<XtotalP/millibarn <<" "<<XtotalR/millibarn<<" mb"<<G4endl;
397 G4cout<<"Elastic "<<Xelastic/millibarn <<G4endl;
398 G4cout<<"PrDiff TrDiff W_Diff "<<Xpr_Diff/millibarn<<" "<<Xtr_Diff/millibarn<<" "<<XDiff/millibarn<<G4endl;
399 G4cout<<"Inelastic "<<Xinel/millibarn <<G4endl;
400 G4cout<<"NonDiff Pom & Reg "<<Xnd/millibarn <<" "<<XndP/millibarn <<" "<<XndR/millibarn <<G4endl;
401 */
402}
B
G4double B(G4double temperature)
Definition G4DNAElectronHoleRecombination.cc:71
G4Exp
G4double G4Exp(G4double initial_x)
Exponential Function double precision.
Definition G4Exp.hh:180
G4Reggeons::Chi_reggeon
G4double Chi_reggeon(G4double Mult, G4double B)
Definition G4Reggeons.cc:415
G4Reggeons::Chi_pomeron
G4double Chi_pomeron(G4double Mult, G4double B)
Definition G4Reggeons.cc:405

◆ Chi_pomeron()

G4double G4Reggeons::Chi_pomeron ( G4double Mult,
G4double B )

Definition at line 405 of file G4Reggeons.cc.

406{
407 G4double R2 = Rsquare_pomeron + Alphaprime_pomeron * G4Log(Sint/S0_pomeron);
408 G4double Eikonal = Mult * C_pomeron * Gamma_pomeron/R2 *
409 G4Pow::GetInstance()->powA(Sint/S0_pomeron, Alpha_pomeron -1.) *
410 G4Exp(-sqr(B)/4.0/R2/hbarc_squared);
411 return Eikonal;
412}
G4Log
G4double G4Log(G4double x)
Definition G4Log.hh:227
G4Pow::GetInstance
static G4Pow * GetInstance()
Definition G4Pow.cc:41
G4Pow::powA
G4double powA(G4double A, G4double y) const
Definition G4Pow.hh:230

Referenced by CalculateXs(), and GetProbabilities().

◆ Chi_reggeon()

G4double G4Reggeons::Chi_reggeon ( G4double Mult,
G4double B )

Definition at line 415 of file G4Reggeons.cc.

416{
417 G4double R2F = Freggeon_Rsquare + Freggeon_Alphaprime * G4Log(Sint/S0_pomeron);
418 G4double R2W = Wreggeon_Rsquare + Wreggeon_Alphaprime * G4Log(Sint/S0_pomeron);
419
420 G4double Eikonal = Mult * FParity * Freggeon_C * Freggeon_Gamma/R2F *
421 G4Pow::GetInstance()->powA(Sint/S0_pomeron, Freggeon_Alpha -1.) *
422 G4Exp(-sqr(B)/4.0/R2F/hbarc_squared);
423
424 Eikonal+= Mult * WParity * Wreggeon_C * Wreggeon_Gamma/R2W *
425 G4Pow::GetInstance()->powA(Sint/S0_pomeron, Wreggeon_Alpha -1.) *
426 G4Exp(-sqr(B)/4.0/R2W/hbarc_squared);
427 return Eikonal;
428}

Referenced by CalculateXs(), and GetProbabilities().

◆ Get_Cprojectile()

G4double G4Reggeons::Get_Cprojectile ( )

Definition at line 332 of file G4Reggeons.cc.

332{return Cpr_pomeron;}

◆ Get_Ctarget()

G4double G4Reggeons::Get_Ctarget ( )

Definition at line 335 of file G4Reggeons.cc.

335{return Ctr_pomeron;}

◆ GetDDiffX()

G4double G4Reggeons::GetDDiffX ( )

Definition at line 438 of file G4Reggeons.cc.

438{ return XDDiff; }

◆ GetElasticX()

G4double G4Reggeons::GetElasticX ( )

Definition at line 435 of file G4Reggeons.cc.

435{ return Xelastic; }

◆ GetInelX()

G4double G4Reggeons::GetInelX ( )

Definition at line 440 of file G4Reggeons.cc.

440{ return Xinel; }

◆ GetND_X()

G4double G4Reggeons::GetND_X ( )

Definition at line 442 of file G4Reggeons.cc.

442{ return Xnd; }

◆ GetNDp_X()

G4double G4Reggeons::GetNDp_X ( )

Definition at line 443 of file G4Reggeons.cc.

443{ return XndP; }

◆ GetNDr_X()

G4double G4Reggeons::GetNDr_X ( )

Definition at line 444 of file G4Reggeons.cc.

444{ return XndR; }

◆ GetPrDiffX()

G4double G4Reggeons::GetPrDiffX ( )

Definition at line 436 of file G4Reggeons.cc.

436{ return Xpr_Diff; }

◆ GetProbabilities()

void G4Reggeons::GetProbabilities ( G4double B,
G4int Mode,
G4double & Pint,
G4double & Pprd,
G4double & Ptrd,
G4double & Pdd,
G4double & Pnd,
G4double & Pnvr )

Definition at line 448 of file G4Reggeons.cc.

452{
453 // Puprose of the method is a calculation of inelastic interaction probability (Pint),
454 // probability of projectile diffraction (Pprd),
455 // probability of target diffraction (Ptrd),
456 // probability of double diffraction (Pdd ),
457 // probability of non-diffractive inter. (Pnd ),
458 // probability of quark-exc. inter. (Pnvr),
459 // number of cutted pomerons (NcutPomerons).
460 // The input parameters are B - impact parameter, and Mode = All/WITHOUT_R/NON_DIFF
461 //
462 if ( B > 2.* fermi ) { Pint=0.; Pprd=0.; Ptrd=0.; Pdd=0.; Pnd=0.; Pnvr=0.; return;}
463 // At large B for hN collisions it is better to return zero inter. probability
464
465 G4double chiP = Chi_pomeron(1.,B); G4double chiR = Chi_reggeon(1.,B);
466 chiPin = Chi_pomeron(2.,B); G4double chiRin = Chi_reggeon(2.,B);
467 //chiPin is data member of the class
468
469 G4double Exp_ChiR = G4Exp(-chiR);
470
471 G4double AmplitudeP = (1.0/C_pomeron)*(1.0 - G4Exp(-chiP))*Exp_ChiR;
472 G4double AmplitudeR = (1.0 - Exp_ChiR);
473
474 G4double AmplitudeP2, Apr_Diff, Atr_Diff, ADiff;
475
476 // Aelastic = sqr(AmplitudeP + AmplitudeR);
477 AmplitudeP2 = sqr(AmplitudeP);
478 Apr_Diff = (Cpr_pomeron - 1.0) * AmplitudeP2;
479 Atr_Diff = (Ctr_pomeron - 1.0) * AmplitudeP2;
480 ADiff = (Cpr_pomeron - 1.0) * (Ctr_pomeron - 1.0) * AmplitudeP2;
481
482 // ----------------------------------
483 Exp_ChiR = G4Exp(-chiRin);
484 AmplitudeP = (1.0/C_pomeron)*(1.0 - G4Exp(-chiPin))*Exp_ChiR;
485 AmplitudeR = (1.0 - Exp_ChiR);
486
487 G4double And, AndP, AndR;
488
489 And = (AmplitudeP + AmplitudeR);
490 AndP = (AmplitudeP + 0. );
491 AndR = (0. + AmplitudeR);
492
493 // ----------------------------------
494 if ( Mode == ALL)
495 {
496 Pint = Apr_Diff + Atr_Diff + ADiff + And;
497 Pprd = Apr_Diff/Pint; // Probability of projectile diffraction
498 Ptrd = Atr_Diff/Pint; // Probability of target diffraction
499 Pdd = ADiff /Pint; // Probability of double diffraction
500 Pnd = AndP /Pint; // Probability of non-diffractive inelastic interaction
501 Pnvr = AndR /Pint; // Probability of non-vacuum reggeon (nvr) inelastic interaction
502 }
503 else if ( Mode == WITHOUT_R)
504 {
505 Pint = Apr_Diff + Atr_Diff + ADiff + AndP;
506 Pprd = Apr_Diff/Pint;
507 Ptrd = Atr_Diff/Pint;
508 Pdd = ADiff /Pint;
509 Pnd = AndP /Pint;
510 Pnvr = 0.;
511 }
512 else
513 { // Mode == NON_DIFF (of projectile)
514 Pint = Atr_Diff + AndP;
515 Pprd = 0.;
516 Ptrd = Atr_Diff/Pint;
517 Pdd = 0.;
518 Pnd = AndP /Pint;
519 Pnvr = 0.;
520 }
521 return;
522}

◆ GetTotalX()

G4double G4Reggeons::GetTotalX ( )

Definition at line 431 of file G4Reggeons.cc.

431{ return Xtotal; }

◆ GetTotalXp()

G4double G4Reggeons::GetTotalXp ( )

Definition at line 432 of file G4Reggeons.cc.

432{ return XtotalP; }

◆ GetTotalXr()

G4double G4Reggeons::GetTotalXr ( )

Definition at line 433 of file G4Reggeons.cc.

433{ return XtotalR; }

◆ GetTrDiffX()

G4double G4Reggeons::GetTrDiffX ( )

Definition at line 437 of file G4Reggeons.cc.

437{ return Xtr_Diff; }

◆ ncPomerons()

G4int G4Reggeons::ncPomerons ( )

Definition at line 525 of file G4Reggeons.cc.

526{
527 if ( chiPin < 0.001 ) return 0; // At small average multiplicity of cutted pomerons
528 // it is better to return 0 to avoid problems with
529 // calculation exactness.
530 G4double ksi = G4UniformRand() * (1.0-G4Exp(-chiPin)) * G4Exp(chiPin);
531 G4double Term = chiPin;
532 G4double Sum = Term;
533 G4int nCuts = 1;
534
535 while ( Sum < ksi) {
536 nCuts++;
537 Term *= chiPin/(G4double) nCuts;
538 Sum += Term;
539 }
540
541 return nCuts;
542}
G4UniformRand
#define G4UniformRand()
Definition Randomize.hh:52

◆ SetS()

void G4Reggeons::SetS ( G4double S)

Definition at line 341 of file G4Reggeons.cc.

341{Sint = S;}
S
G4double S(G4double temp)
Definition G4DNAElectronHoleRecombination.cc:79
The documentation for this class was generated from the following files: