| Geant4 Cross Reference |
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25 // 25 //
26 // 26 //
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class header file 29 // GEANT4 Class header file
30 // 30 //
31 // 31 //
32 // File name: G4eeCrossSections 32 // File name: G4eeCrossSections
33 // 33 //
34 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko
35 // 35 //
36 // Creation date: 25.10.2003 36 // Creation date: 25.10.2003
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 10.07.2008 Updated for PDG Jour. Physics, G 39 // 10.07.2008 Updated for PDG Jour. Physics, G33, 1 (2006)
40 // 40 //
41 // ------------------------------------------- 41 // -------------------------------------------------------------------
42 // 42 //
43 43
44 44
45 //....oooOO0OOooo........oooOO0OOooo........oo 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
46 //....oooOO0OOooo........oooOO0OOooo........oo 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
47 47
48 #include "G4eeCrossSections.hh" 48 #include "G4eeCrossSections.hh"
49 #include "G4PhysicalConstants.hh" 49 #include "G4PhysicalConstants.hh"
50 #include "G4SystemOfUnits.hh" 50 #include "G4SystemOfUnits.hh"
51 #include "G4PionPlus.hh" 51 #include "G4PionPlus.hh"
52 #include "G4PionMinus.hh" 52 #include "G4PionMinus.hh"
53 #include "G4PionZero.hh" 53 #include "G4PionZero.hh"
54 #include "G4Eta.hh" 54 #include "G4Eta.hh"
55 #include "G4KaonPlus.hh" 55 #include "G4KaonPlus.hh"
56 #include "G4KaonMinus.hh" 56 #include "G4KaonMinus.hh"
57 #include "G4KaonZeroLong.hh" 57 #include "G4KaonZeroLong.hh"
58 #include "G4PhysicsLinearVector.hh" 58 #include "G4PhysicsLinearVector.hh"
59 59
60 #include <iostream> 60 #include <iostream>
61 #include <fstream> 61 #include <fstream>
62 62
63 //....oooOO0OOooo........oooOO0OOooo........oo 63 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
64 64
65 using namespace std; 65 using namespace std;
66 66
67 G4eeCrossSections::G4eeCrossSections() 67 G4eeCrossSections::G4eeCrossSections()
68 { 68 {
69 Initialise(); 69 Initialise();
70 } 70 }
71 71
72 //....oooOO0OOooo........oooOO0OOooo........oo 72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
73 73
74 G4eeCrossSections::~G4eeCrossSections() 74 G4eeCrossSections::~G4eeCrossSections()
75 {} 75 {}
76 76
77 //....oooOO0OOooo........oooOO0OOooo........oo 77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78 78
79 void G4eeCrossSections::Initialise() 79 void G4eeCrossSections::Initialise()
80 { 80 {
81 MsPi = G4PionPlus::PionPlus()->GetPDGMass(); 81 MsPi = G4PionPlus::PionPlus()->GetPDGMass();
82 MsPi0= G4PionZero::PionZero()->GetPDGMass(); 82 MsPi0= G4PionZero::PionZero()->GetPDGMass();
83 MsEta= G4Eta::Eta()->GetPDGMass(); 83 MsEta= G4Eta::Eta()->GetPDGMass();
84 MsEtap=957.78*MeV; 84 MsEtap=957.78*MeV;
85 MsKs = G4KaonZeroLong::KaonZeroLong()->GetPD 85 MsKs = G4KaonZeroLong::KaonZeroLong()->GetPDGMass();
86 MsKc = G4KaonPlus::KaonPlus()->GetPDGMass(); 86 MsKc = G4KaonPlus::KaonPlus()->GetPDGMass();
87 MsRho= 775.5*MeV; 87 MsRho= 775.5*MeV;
88 MsOm = 782.62*MeV; 88 MsOm = 782.62*MeV;
89 MsF0 = 980.0*MeV; 89 MsF0 = 980.0*MeV;
90 MsA0 = 984.7*MeV; 90 MsA0 = 984.7*MeV;
91 MsPhi= 1019.46*MeV; 91 MsPhi= 1019.46*MeV;
92 MsK892 = 891.66*MeV; 92 MsK892 = 891.66*MeV;
93 MsK0892 = 896.0*MeV; 93 MsK0892 = 896.0*MeV;
94 GRho = 149.4*MeV; 94 GRho = 149.4*MeV;
95 GOm = 8.49*MeV; 95 GOm = 8.49*MeV;
96 GPhi = 4.26*MeV; 96 GPhi = 4.26*MeV;
97 GK892 = 50.8*MeV; 97 GK892 = 50.8*MeV;
98 GK0892 = 50.3*MeV; 98 GK0892 = 50.3*MeV;
99 PhRho = 0.0; 99 PhRho = 0.0;
100 PhOm = 0.0; 100 PhOm = 0.0;
101 PhPhi = 155.0*degree; 101 PhPhi = 155.0*degree;
102 PhRhoPi = 186.0*degree; 102 PhRhoPi = 186.0*degree;
103 103
104 BrRhoPiG = 4.5e-4; 104 BrRhoPiG = 4.5e-4;
105 BrRhoPi0G= 6.8e-4; 105 BrRhoPi0G= 6.8e-4;
106 BrRhoEtaG= 2.95e-4; 106 BrRhoEtaG= 2.95e-4;
107 BrRhoEe = 4.7e-5; 107 BrRhoEe = 4.7e-5;
108 BrOm3Pi = 0.891; 108 BrOm3Pi = 0.891;
109 BrOmPi0G= 0.089; 109 BrOmPi0G= 0.089;
110 BrOmEtaG= 4.9e-4; 110 BrOmEtaG= 4.9e-4;
111 BrOm2Pi = 0.017; 111 BrOm2Pi = 0.017;
112 PhOm2Pi = 90.0; 112 PhOm2Pi = 90.0;
113 BrOmEe = 7.18e-5; 113 BrOmEe = 7.18e-5;
114 BrPhi2Kc = 0.492; 114 BrPhi2Kc = 0.492;
115 BrPhiKsKl= 0.34; 115 BrPhiKsKl= 0.34;
116 BrPhi3Pi = 0.153; 116 BrPhi3Pi = 0.153;
117 BrPhiPi0G= 1.25e-3; 117 BrPhiPi0G= 1.25e-3;
118 BrPhiEtaG= 1.301e-2; 118 BrPhiEtaG= 1.301e-2;
119 BrPhi2Pi = 7.3e-5; 119 BrPhi2Pi = 7.3e-5;
120 PhPhi2Pi = -20.0*degree; 120 PhPhi2Pi = -20.0*degree;
121 BrPhiEe = 2.97e-4; 121 BrPhiEe = 2.97e-4;
122 122
123 MsRho3 = MsRho*MsRho*MsRho; 123 MsRho3 = MsRho*MsRho*MsRho;
124 MsOm3 = MsOm*MsOm*MsOm; 124 MsOm3 = MsOm*MsOm*MsOm;
125 MsPhi3 = MsPhi*MsPhi*MsPhi; 125 MsPhi3 = MsPhi*MsPhi*MsPhi;
126 126
127 MeVnb = 3.8938e+11*nanobarn; 127 MeVnb = 3.8938e+11*nanobarn;
128 Alpha = fine_structure_const; 128 Alpha = fine_structure_const;
129 129
130 AOmRho = 3.0; 130 AOmRho = 3.0;
131 ARhoPRho = 0.72; 131 ARhoPRho = 0.72;
132 cterm=0.; 132 cterm=0.;
133 mssig = 600.*MeV; 133 mssig = 600.*MeV;
134 gsig = 500.*MeV; 134 gsig = 500.*MeV;
135 brsigpipi = 1.; 135 brsigpipi = 1.;
136 136
137 msrho1450 = 1459.*MeV; 137 msrho1450 = 1459.*MeV;
138 msrho1700 = 1688.8*MeV; 138 msrho1700 = 1688.8*MeV;
139 grho1450 = 171.*MeV; 139 grho1450 = 171.*MeV;
140 grho1700 = 161.*MeV; 140 grho1700 = 161.*MeV;
141 arhoompi0 = 1.; 141 arhoompi0 = 1.;
142 arho1450ompi0 = 1.; 142 arho1450ompi0 = 1.;
143 arho1700ompi0 = 1.; 143 arho1700ompi0 = 1.;
144 phrhoompi0 = 0.; 144 phrhoompi0 = 0.;
145 phrho1450ompi0 = pi; 145 phrho1450ompi0 = pi;
146 phrho1700ompi0 = 0.; 146 phrho1700ompi0 = 0.;
147 aomrhopi0 = 1.; 147 aomrhopi0 = 1.;
148 phomrhopi0 = 0.; 148 phomrhopi0 = 0.;
149 arhopi0pi0g = 0.; 149 arhopi0pi0g = 0.;
150 aompi0pi0g = 0.; 150 aompi0pi0g = 0.;
151 phrhopi0pi0g = 0.; 151 phrhopi0pi0g = 0.;
152 phompi0pi0g = 0.; 152 phompi0pi0g = 0.;
153 brrho1450ompi0 = 0.02; 153 brrho1450ompi0 = 0.02;
154 brrho1450pipi = 0.50; 154 brrho1450pipi = 0.50;
155 brrho1700ompi0 = 1.0; 155 brrho1700ompi0 = 1.0;
156 brrho1700pipi = 0.02; 156 brrho1700pipi = 0.02;
157 aphirhopi0 = 1.; 157 aphirhopi0 = 1.;
158 phphirhopi0 = pi; 158 phphirhopi0 = pi;
159 arhosigg = 0.; 159 arhosigg = 0.;
160 phrhosigg = 0.; 160 phrhosigg = 0.;
161 aomsigg = 0.; 161 aomsigg = 0.;
162 phomsigg = 0.; 162 phomsigg = 0.;
163 163
164 G4String w0, w1, w2; 164 G4String w0, w1, w2;
165 ph3p = 0; 165 ph3p = 0;
166 166
167 /* 167 /*
168 G4double emin, emax; 168 G4double emin, emax;
169 G4int nbins; 169 G4int nbins;
170 const G4String fname = "wrhopi.wid"; 170 const G4String fname = "wrhopi.wid";
171 ifstream fi(fname.c_str()); 171 ifstream fi(fname.c_str());
172 fi >> w0 >> nbins >> w1 >> emin >> w2 >> ema 172 fi >> w0 >> nbins >> w1 >> emin >> w2 >> emax;
173 emin *= MeV; 173 emin *= MeV;
174 emax *= MeV; 174 emax *= MeV;
175 ph3p = new G4PhysicsLinearVector(emin,emax,n 175 ph3p = new G4PhysicsLinearVector(emin,emax,nbins);
176 G4int nlines = nbins/5; 176 G4int nlines = nbins/5;
177 G4double s0, s1, s2, s3, s4; 177 G4double s0, s1, s2, s3, s4;
178 for(G4int i=0; i<nlines; i++) { 178 for(G4int i=0; i<nlines; i++) {
179 fi >> s0 >> s1 >> s2 >> s3 >> s4; 179 fi >> s0 >> s1 >> s2 >> s3 >> s4;
180 ph3p->PutValue(5*i, s0); 180 ph3p->PutValue(5*i, s0);
181 ph3p->PutValue(5*i + 1, s1); 181 ph3p->PutValue(5*i + 1, s1);
182 ph3p->PutValue(5*i + 2, s2); 182 ph3p->PutValue(5*i + 2, s2);
183 ph3p->PutValue(5*i + 3, s3); 183 ph3p->PutValue(5*i + 3, s3);
184 ph3p->PutValue(5*i + 4, s4); 184 ph3p->PutValue(5*i + 4, s4);
185 } 185 }
186 fi.close(); 186 fi.close();
187 */ 187 */
188 } 188 }
189 189
190 //....oooOO0OOooo........oooOO0OOooo........oo 190 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
191 191
192 G4double G4eeCrossSections::CrossSection2pi(G4 192 G4double G4eeCrossSections::CrossSection2pi(G4double e)
193 { 193 {
194 complex<G4double> xr(cos(PhRho),sin(PhRho)); 194 complex<G4double> xr(cos(PhRho),sin(PhRho));
195 complex<G4double> xo(cos(PhOm2Pi),sin(PhOm2P 195 complex<G4double> xo(cos(PhOm2Pi),sin(PhOm2Pi));
196 complex<G4double> xf(cos(PhPhi2Pi),sin(PhPhi 196 complex<G4double> xf(cos(PhPhi2Pi),sin(PhPhi2Pi));
197 197
198 G4double s_inv = e*e; 198 G4double s_inv = e*e;
199 complex<G4double> drho = DpRho(e); 199 complex<G4double> drho = DpRho(e);
200 complex<G4double> dom = DpOm(e); 200 complex<G4double> dom = DpOm(e);
201 complex<G4double> dphi = DpPhi(e); 201 complex<G4double> dphi = DpPhi(e);
202 202
203 complex<G4double> amp = 203 complex<G4double> amp =
204 sqrt(Width2p(s_inv,MsRho,GRho,1.0,MsPi)* 204 sqrt(Width2p(s_inv,MsRho,GRho,1.0,MsPi)*MsRho3*BrRhoEe*GRho)*xr/drho
205 + sqrt(Width2p(s_inv,MsOm,GOm,BrOm2Pi,MsPi 205 + sqrt(Width2p(s_inv,MsOm,GOm,BrOm2Pi,MsPi)*MsOm3*BrOmEe*GOm)*xo/dom
206 + sqrt(Width2p(s_inv,MsPhi,GPhi,BrPhi2Pi,M 206 + sqrt(Width2p(s_inv,MsPhi,GPhi,BrPhi2Pi,MsPi)*MsPhi3*BrPhiEe*GPhi)*xf/dphi;
207 207
208 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e* 208 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e*s_inv);
209 209
210 return cross; 210 return cross;
211 } 211 }
212 212
213 //....oooOO0OOooo........oooOO0OOooo........oo 213 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 214
215 G4double G4eeCrossSections::CrossSection3pi(G4 215 G4double G4eeCrossSections::CrossSection3pi(G4double e)
216 { 216 {
217 complex<G4double> xf(cos(PhPhi2Pi),sin(PhPhi 217 complex<G4double> xf(cos(PhPhi2Pi),sin(PhPhi));
218 218
219 G4double s_inv = e*e; 219 G4double s_inv = e*e;
220 complex<G4double> dom = DpOm(e); 220 complex<G4double> dom = DpOm(e);
221 complex<G4double> dphi = DpPhi(e); 221 complex<G4double> dphi = DpPhi(e);
222 222
223 complex<G4double> amp = 223 complex<G4double> amp =
224 sqrt(Width3p(s_inv,MsOm,GOm,BrOm3Pi)*MsOm3 224 sqrt(Width3p(s_inv,MsOm,GOm,BrOm3Pi)*MsOm3*BrOmEe*GOm)/dom
225 + sqrt(Width3p(s_inv,MsPhi,GPhi,BrPhi3Pi)* 225 + sqrt(Width3p(s_inv,MsPhi,GPhi,BrPhi3Pi)*MsPhi3*BrPhiEe*GPhi)*xf/dphi;
226 226
227 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e* 227 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e*s_inv);
228 228
229 return cross; 229 return cross;
230 } 230 }
231 231
232 //....oooOO0OOooo........oooOO0OOooo........oo 232 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
233 233
234 G4double G4eeCrossSections::CrossSectionPi0G(G 234 G4double G4eeCrossSections::CrossSectionPi0G(G4double e)
235 { 235 {
236 complex<G4double> xf(cos(PhPhi),sin(PhPhi)); 236 complex<G4double> xf(cos(PhPhi),sin(PhPhi));
237 237
238 G4double s_inv = e*e; 238 G4double s_inv = e*e;
239 complex<G4double> drho = DpRho(e); 239 complex<G4double> drho = DpRho(e);
240 complex<G4double> dom = DpOm(e); 240 complex<G4double> dom = DpOm(e);
241 complex<G4double> dphi = DpPhi(e); 241 complex<G4double> dphi = DpPhi(e);
242 242
243 complex<G4double> amp = 243 complex<G4double> amp =
244 sqrt(WidthPg(s_inv,MsRho,GRho,BrRhoPi0G, 244 sqrt(WidthPg(s_inv,MsRho,GRho,BrRhoPi0G,MsPi0)*MsRho3*BrRhoEe*GRho)/drho
245 + sqrt(WidthPg(s_inv,MsOm,GOm,BrOmPi0G,MsP 245 + sqrt(WidthPg(s_inv,MsOm,GOm,BrOmPi0G,MsPi0)*MsOm3*BrOmEe*GOm)/dom
246 + sqrt(WidthPg(s_inv,MsPhi,GPhi,BrPhiPi0G, 246 + sqrt(WidthPg(s_inv,MsPhi,GPhi,BrPhiPi0G,MsPi0)*MsPhi3*BrPhiEe*GPhi)*xf/dphi;
247 247
248 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e* 248 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e*s_inv);
249 249
250 return cross; 250 return cross;
251 } 251 }
252 252
253 //....oooOO0OOooo........oooOO0OOooo........oo 253 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
254 254
255 G4double G4eeCrossSections::CrossSectionEtaG(G 255 G4double G4eeCrossSections::CrossSectionEtaG(G4double e)
256 { 256 {
257 complex<G4double> xf(cos(PhPhi),sin(PhPhi)); 257 complex<G4double> xf(cos(PhPhi),sin(PhPhi));
258 258
259 G4double s_inv = e*e; 259 G4double s_inv = e*e;
260 complex<G4double> drho = DpRho(e); 260 complex<G4double> drho = DpRho(e);
261 complex<G4double> dom = DpOm(e); 261 complex<G4double> dom = DpOm(e);
262 complex<G4double> dphi = DpPhi(e); 262 complex<G4double> dphi = DpPhi(e);
263 263
264 complex<G4double> amp = 264 complex<G4double> amp =
265 sqrt(WidthPg(s_inv,MsRho,GRho,BrRhoEtaG, 265 sqrt(WidthPg(s_inv,MsRho,GRho,BrRhoEtaG,MsEta)*MsRho3*BrRhoEe*GRho)/drho
266 + sqrt(WidthPg(s_inv,MsOm,GOm,BrOmEtaG,MsE 266 + sqrt(WidthPg(s_inv,MsOm,GOm,BrOmEtaG,MsEta)*MsOm3*BrOmEe*GOm)/dom
267 + sqrt(WidthPg(s_inv,MsPhi,GPhi,BrPhiEtaG, 267 + sqrt(WidthPg(s_inv,MsPhi,GPhi,BrPhiEtaG,MsEta)*MsPhi3*BrPhiEe*GPhi)*xf/dphi;
268 268
269 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e* 269 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e*s_inv);
270 270
271 return cross; 271 return cross;
272 } 272 }
273 273
274 //....oooOO0OOooo........oooOO0OOooo........oo 274 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
275 275
276 G4double G4eeCrossSections::CrossSection2Kchar 276 G4double G4eeCrossSections::CrossSection2Kcharged(G4double e)
277 { 277 {
278 G4double s_inv = e*e; 278 G4double s_inv = e*e;
279 complex<G4double> dphi = DpPhi(e); 279 complex<G4double> dphi = DpPhi(e);
280 280
281 complex<G4double> amp = 281 complex<G4double> amp =
282 sqrt(Width2p(s_inv,MsPhi,GPhi,BrPhi2Kc,MsK 282 sqrt(Width2p(s_inv,MsPhi,GPhi,BrPhi2Kc,MsKc)*MsPhi3*BrPhiEe*GPhi)/dphi;
283 283
284 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e* 284 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e*s_inv);
285 285
286 return cross; 286 return cross;
287 } 287 }
288 288
289 //....oooOO0OOooo........oooOO0OOooo........oo 289 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
290 290
291 G4double G4eeCrossSections::CrossSection2Kneut 291 G4double G4eeCrossSections::CrossSection2Kneutral(G4double e)
292 { 292 {
293 G4double s_inv = e*e; 293 G4double s_inv = e*e;
294 complex<G4double> dphi = DpPhi(e); 294 complex<G4double> dphi = DpPhi(e);
295 295
296 complex<G4double> amp = 296 complex<G4double> amp =
297 sqrt(Width2p(s_inv,MsPhi,GPhi,BrPhiKsKl,Ms 297 sqrt(Width2p(s_inv,MsPhi,GPhi,BrPhiKsKl,MsKs)*MsPhi3*BrPhiEe*GPhi)/dphi;
298 298
299 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e* 299 G4double cross = 12.0*pi*MeVnb*norm(amp)/(e*s_inv);
300 300
301 return cross; 301 return cross;
302 } 302 }
303 303
304 //....oooOO0OOooo........oooOO0OOooo........oo 304 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
305 305
306 G4double G4eeCrossSections::Width2p(G4double s 306 G4double G4eeCrossSections::Width2p(G4double s_inv, G4double mres,
307 G4double g 307 G4double gconst, G4double br, G4double mp)
308 { 308 {
309 G4double mp2 = 4.0*mp*mp; 309 G4double mp2 = 4.0*mp*mp;
310 G4double s0 = mres*mres; 310 G4double s0 = mres*mres;
311 G4double f = (s_inv - mp2)/(s0 - mp2); 311 G4double f = (s_inv - mp2)/(s0 - mp2);
312 if(f < 0.0) f = 0.0; 312 if(f < 0.0) f = 0.0;
313 return gconst*br*sqrt(f)*f*s0/s_inv; 313 return gconst*br*sqrt(f)*f*s0/s_inv;
314 } 314 }
315 315
316 //....oooOO0OOooo........oooOO0OOooo........oo 316 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
317 317
318 G4double G4eeCrossSections::Width3p(G4double s 318 G4double G4eeCrossSections::Width3p(G4double s_inv, G4double mres,
319 G4double g 319 G4double gconst, G4double br)
320 { 320 {
321 G4double w = PhaseSpace3p(sqrt(s_inv)); 321 G4double w = PhaseSpace3p(sqrt(s_inv));
322 G4double w0= PhaseSpace3p(mres); 322 G4double w0= PhaseSpace3p(mres);
323 G4double x = gconst*br*w/w0; 323 G4double x = gconst*br*w/w0;
324 return x; 324 return x;
325 } 325 }
326 326
327 //....oooOO0OOooo........oooOO0OOooo........oo 327 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
328 328
329 G4double G4eeCrossSections::PhaseSpace3p(G4dou 329 G4double G4eeCrossSections::PhaseSpace3p(G4double e)
330 { 330 {
331 // E.A.Kuraev, Z.K.Silagadze. 331 // E.A.Kuraev, Z.K.Silagadze.
332 // Once more about the omega->3 pi contact 332 // Once more about the omega->3 pi contact term.
333 // Yadernaya Phisica, 1995, V58, N9, p.1678 333 // Yadernaya Phisica, 1995, V58, N9, p.1678-1694.
334 334
335 // G4bool b; 335 // G4bool b;
336 // G4double x = ph3p->GetValue(e, b); 336 // G4double x = ph3p->GetValue(e, b);
337 G4double x = 1.0; 337 G4double x = 1.0;
338 G4double emev = e/MeV; 338 G4double emev = e/MeV;
339 G4double y = 414.12/emev; 339 G4double y = 414.12/emev;
340 x *= pow(e/MsOm, 5.0) * pow(emev*0.1, 3.0)*( 340 x *= pow(e/MsOm, 5.0) * pow(emev*0.1, 3.0)*(1.0 - y*y);
341 return x; 341 return x;
342 } 342 }
343 343
344 //....oooOO0OOooo........oooOO0OOooo........oo 344 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
345 345
346 G4double G4eeCrossSections::WidthPg(G4double s 346 G4double G4eeCrossSections::WidthPg(G4double s_inv, G4double mres,
347 G4double g 347 G4double gconst, G4double br, G4double mp)
348 { 348 {
349 G4double mp2 = mp*mp; 349 G4double mp2 = mp*mp;
350 G4double s0 = mres*mres; 350 G4double s0 = mres*mres;
351 G4double f = (s_inv - mp2)*mres/((s0 - m 351 G4double f = (s_inv - mp2)*mres/((s0 - mp2)*sqrt(s_inv));
352 if(f < 0.0) f = 0.0; 352 if(f < 0.0) f = 0.0;
353 return gconst*br*f*f*f; 353 return gconst*br*f*f*f;
354 } 354 }
355 355
356 //....oooOO0OOooo........oooOO0OOooo........oo 356 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
357 357
358 G4double G4eeCrossSections::WidthRho(G4double 358 G4double G4eeCrossSections::WidthRho(G4double e)
359 { 359 {
360 G4double w = Width2p(e*e, MsRho, GRho, 1.0, 360 G4double w = Width2p(e*e, MsRho, GRho, 1.0, MsPi);
361 return w; 361 return w;
362 } 362 }
363 363
364 //....oooOO0OOooo........oooOO0OOooo........oo 364 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
365 365
366 G4double G4eeCrossSections::WidthOm(G4double e 366 G4double G4eeCrossSections::WidthOm(G4double e)
367 { 367 {
368 G4double s_inv = e*e; 368 G4double s_inv = e*e;
369 G4double w = (Width3p(s_inv, MsOm, GOm, BrOm 369 G4double w = (Width3p(s_inv, MsOm, GOm, BrOm3Pi) +
370 WidthPg(s_inv, MsOm, GOm, BrOm 370 WidthPg(s_inv, MsOm, GOm, BrOmPi0G, MsPi0) +
371 WidthPg(s_inv, MsOm, GOm, BrOm 371 WidthPg(s_inv, MsOm, GOm, BrOmEtaG, MsEta) +
372 Width2p(s_inv, MsOm, GOm, BrOm 372 Width2p(s_inv, MsOm, GOm, BrOm2Pi, MsPi)) /
373 (BrOm3Pi+BrOmPi0G+BrOmEtaG+BrOm2Pi); 373 (BrOm3Pi+BrOmPi0G+BrOmEtaG+BrOm2Pi);
374 return w; 374 return w;
375 } 375 }
376 376
377 //....oooOO0OOooo........oooOO0OOooo........oo 377 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
378 378
379 G4double G4eeCrossSections::WidthPhi(G4double 379 G4double G4eeCrossSections::WidthPhi(G4double e)
380 { 380 {
381 G4double s_inv = e*e; 381 G4double s_inv = e*e;
382 G4double w = (Width3p(s_inv, MsPhi, GPhi, Br 382 G4double w = (Width3p(s_inv, MsPhi, GPhi, BrPhi3Pi) +
383 WidthPg(s_inv, MsPhi, GPhi, Br 383 WidthPg(s_inv, MsPhi, GPhi, BrPhiPi0G, MsPi0) +
384 WidthPg(s_inv, MsPhi, GPhi, Br 384 WidthPg(s_inv, MsPhi, GPhi, BrPhiEtaG, MsEta) +
385 Width2p(s_inv, MsPhi, GPhi, Br 385 Width2p(s_inv, MsPhi, GPhi, BrPhi2Kc, MsKc) +
386 Width2p(s_inv, MsPhi, GPhi, Br 386 Width2p(s_inv, MsPhi, GPhi, BrPhiKsKl, MsKs)) /
387 (BrPhi3Pi+BrPhiPi0G+BrPhiEtaG+BrPhi2Kc 387 (BrPhi3Pi+BrPhiPi0G+BrPhiEtaG+BrPhi2Kc+BrPhiKsKl);
388 return w; 388 return w;
389 } 389 }
390 390
391 //....oooOO0OOooo........oooOO0OOooo........oo 391 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
392 392
393 complex<G4double> G4eeCrossSections::DpRho(G4d 393 complex<G4double> G4eeCrossSections::DpRho(G4double e)
394 { 394 {
395 complex<G4double> d(MsRho*MsRho - e*e, -e*Wi 395 complex<G4double> d(MsRho*MsRho - e*e, -e*WidthRho(e));
396 return d; 396 return d;
397 } 397 }
398 398
399 //....oooOO0OOooo........oooOO0OOooo........oo 399 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
400 400
401 complex<G4double> G4eeCrossSections::DpOm(G4do 401 complex<G4double> G4eeCrossSections::DpOm(G4double e)
402 { 402 {
403 complex<G4double> d(MsOm*MsOm - e*e, -e*Widt 403 complex<G4double> d(MsOm*MsOm - e*e, -e*WidthOm(e));
404 return d; 404 return d;
405 } 405 }
406 406
407 //....oooOO0OOooo........oooOO0OOooo........oo 407 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
408 408
409 complex<G4double> G4eeCrossSections::DpPhi(G4d 409 complex<G4double> G4eeCrossSections::DpPhi(G4double e)
410 { 410 {
411 complex<G4double> d(MsPhi*MsPhi - e*e, -e*Wi 411 complex<G4double> d(MsPhi*MsPhi - e*e, -e*WidthPhi(e));
412 return d; 412 return d;
413 } 413 }
414 414
415 //....oooOO0OOooo........oooOO0OOooo........oo 415 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
416 416