Geant4  10.02.p03
G4MuonRadiativeDecayChannelWithSpin Class Reference

#include <G4MuonRadiativeDecayChannelWithSpin.hh>

Inheritance diagram for G4MuonRadiativeDecayChannelWithSpin:
Collaboration diagram for G4MuonRadiativeDecayChannelWithSpin:

Public Member Functions

 G4MuonRadiativeDecayChannelWithSpin (const G4String &theParentName, G4double theBR)
 
virtual ~G4MuonRadiativeDecayChannelWithSpin ()
 
virtual G4DecayProductsDecayIt (G4double)
 
- Public Member Functions inherited from G4VDecayChannel
 G4VDecayChannel (const G4String &aName, G4int Verbose=1)
 
 G4VDecayChannel (const G4String &aName, const G4String &theParentName, G4double theBR, G4int theNumberOfDaughters, const G4String &theDaughterName1, const G4String &theDaughterName2="", const G4String &theDaughterName3="", const G4String &theDaughterName4="")
 
virtual ~G4VDecayChannel ()
 
G4int operator== (const G4VDecayChannel &right) const
 
G4int operator!= (const G4VDecayChannel &right) const
 
G4int operator< (const G4VDecayChannel &right) const
 
const G4StringGetKinematicsName () const
 
G4double GetBR () const
 
G4int GetNumberOfDaughters () const
 
G4ParticleDefinitionGetParent ()
 
G4ParticleDefinitionGetDaughter (G4int anIndex)
 
G4int GetAngularMomentum ()
 
const G4StringGetParentName () const
 
const G4StringGetDaughterName (G4int anIndex) const
 
G4double GetParentMass () const
 
G4double GetDaughterMass (G4int anIndex) const
 
void SetParent (const G4ParticleDefinition *particle_type)
 
void SetParent (const G4String &particle_name)
 
void SetBR (G4double value)
 
void SetNumberOfDaughters (G4int value)
 
void SetDaughter (G4int anIndex, const G4ParticleDefinition *particle_type)
 
void SetDaughter (G4int anIndex, const G4String &particle_name)
 
void SetVerboseLevel (G4int value)
 
G4int GetVerboseLevel () const
 
void DumpInfo ()
 
G4double GetRangeMass () const
 
void SetRangeMass (G4double val)
 
virtual G4bool IsOKWithParentMass (G4double parentMass)
 
void SetPolarization (const G4ThreeVector &)
 
const G4ThreeVectorGetPolarization () const
 

Protected Member Functions

 G4MuonRadiativeDecayChannelWithSpin (const G4MuonRadiativeDecayChannelWithSpin &)
 
G4MuonRadiativeDecayChannelWithSpinoperator= (const G4MuonRadiativeDecayChannelWithSpin &)
 
- Protected Member Functions inherited from G4VDecayChannel
void ClearDaughtersName ()
 
void CheckAndFillDaughters ()
 
void CheckAndFillParent ()
 
 G4VDecayChannel ()
 
 G4VDecayChannel (const G4VDecayChannel &)
 
G4VDecayChanneloperator= (const G4VDecayChannel &)
 
G4double DynamicalMass (G4double massPDG, G4double width, G4double maxDev=+1.) const
 

Private Member Functions

 G4MuonRadiativeDecayChannelWithSpin ()
 
G4double fron (G4double Pmu, G4double x, G4double y, G4double cthetaE, G4double cthetaG, G4double cthetaEG)
 
void rn3dim (G4double &x, G4double &y, G4double &z, G4double xlong)
 
G4double atan4 (G4double x, G4double y)
 

Additional Inherited Members

- Protected Attributes inherited from G4VDecayChannel
G4String kinematics_name
 
G4double rbranch
 
G4int numberOfDaughters
 
G4Stringparent_name
 
G4String ** daughters_name
 
G4double rangeMass
 
G4ThreeVector parent_polarization
 
G4ParticleTableparticletable
 
G4int verboseLevel
 
G4ParticleDefinitionG4MT_parent
 
G4ParticleDefinition ** G4MT_daughters
 
G4double G4MT_parent_mass
 
G4doubleG4MT_daughters_mass
 
G4doubleG4MT_daughters_width
 
G4Mutex daughtersMutex
 
G4Mutex parentMutex
 
- Static Protected Attributes inherited from G4VDecayChannel
static const G4String noName = " "
 

Detailed Description

Definition at line 61 of file G4MuonRadiativeDecayChannelWithSpin.hh.

Constructor & Destructor Documentation

◆ G4MuonRadiativeDecayChannelWithSpin() [1/3]

G4MuonRadiativeDecayChannelWithSpin::G4MuonRadiativeDecayChannelWithSpin ( const G4String theParentName,
G4double  theBR 
)

Definition at line 59 of file G4MuonRadiativeDecayChannelWithSpin.cc.

61  : G4VDecayChannel("Radiative Muon Decay",1)
62 {
63  // set names for daughter particles
64  if (theParentName == "mu+") {
65  SetBR(theBR);
66  SetParent("mu+");
68  SetDaughter(0, "e+");
69  SetDaughter(1, "gamma");
70  SetDaughter(2, "nu_e");
71  SetDaughter(3, "anti_nu_mu");
72  } else if (theParentName == "mu-") {
73  SetBR(theBR);
74  SetParent("mu-");
76  SetDaughter(0, "e-");
77  SetDaughter(1, "gamma");
78  SetDaughter(2, "anti_nu_e");
79  SetDaughter(3, "nu_mu");
80  } else {
81 #ifdef G4VERBOSE
82  if (GetVerboseLevel()>0) {
83  G4cout << "G4RadiativeMuonDecayChannel:: constructor :";
84  G4cout << " parent particle is not muon but ";
85  G4cout << theParentName << G4endl;
86  }
87 #endif
88  }
89 }
void SetBR(G4double value)
G4GLOB_DLL std::ostream G4cout
void SetNumberOfDaughters(G4int value)
void SetParent(const G4ParticleDefinition *particle_type)
void SetDaughter(G4int anIndex, const G4ParticleDefinition *particle_type)
#define G4endl
Definition: G4ios.hh:61
G4int GetVerboseLevel() const
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◆ ~G4MuonRadiativeDecayChannelWithSpin()

G4MuonRadiativeDecayChannelWithSpin::~G4MuonRadiativeDecayChannelWithSpin ( )
virtual

Definition at line 91 of file G4MuonRadiativeDecayChannelWithSpin.cc.

92 {
93 }

◆ G4MuonRadiativeDecayChannelWithSpin() [2/3]

G4MuonRadiativeDecayChannelWithSpin::G4MuonRadiativeDecayChannelWithSpin ( const G4MuonRadiativeDecayChannelWithSpin right)
protected

Definition at line 95 of file G4MuonRadiativeDecayChannelWithSpin.cc.

95  :
96  G4VDecayChannel(right)
97 {
98 }

◆ G4MuonRadiativeDecayChannelWithSpin() [3/3]

G4MuonRadiativeDecayChannelWithSpin::G4MuonRadiativeDecayChannelWithSpin ( )
private

Definition at line 53 of file G4MuonRadiativeDecayChannelWithSpin.cc.

54  : G4VDecayChannel()
55 {
56 }

Member Function Documentation

◆ atan4()

G4double G4MuonRadiativeDecayChannelWithSpin::atan4 ( G4double  x,
G4double  y 
)
inlineprivate

Definition at line 124 of file G4MuonRadiativeDecayChannelWithSpin.hh.

126 {
127  G4double phi = 0.;
128 
129  if (x==0. && y>0.){
130  phi = 0.5*CLHEP::pi;
131  } else if (x==0. && y<0.){
132  phi = 1.5*CLHEP::pi;
133  } else if (y==0. && x>0.){
134  phi = 0.;
135  } else if (y==0. && x<0.){
136  phi = CLHEP::pi;
137  } else if (x>0. ){
138  phi = std::atan(y/x);
139  } else if (x<0. ){
140  phi = std::atan(y/x) + CLHEP::pi;
141  }
142 
143  return phi;
144 }
Double_t y
static const double pi
Definition: SystemOfUnits.h:53
double G4double
Definition: G4Types.hh:76
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◆ DecayIt()

G4DecayProducts * G4MuonRadiativeDecayChannelWithSpin::DecayIt ( G4double  )
virtual

if(i<10000000)goto leap1:

Implements G4VDecayChannel.

Definition at line 129 of file G4MuonRadiativeDecayChannelWithSpin.cc.

130 {
131 
132 #ifdef G4VERBOSE
133  if (GetVerboseLevel()>1)
134  G4cout << "G4MuonRadiativeDecayChannelWithSpin::DecayIt ";
135 #endif
136 
139 
140  // parent mass
141  G4double parentmass = G4MT_parent->GetPDGMass();
142 
143  G4double EMMU = parentmass;
144 
145  //daughters'mass
146  G4double daughtermass[4];
147  G4double sumofdaughtermass = 0.0;
148  for (G4int index=0; index<4; index++){
149  daughtermass[index] = G4MT_daughters[index]->GetPDGMass();
150  sumofdaughtermass += daughtermass[index];
151  }
152 
153  G4double EMASS = daughtermass[0];
154 
155  //create parent G4DynamicParticle at rest
156  G4ThreeVector dummy;
157  G4DynamicParticle * parentparticle =
158  new G4DynamicParticle( G4MT_parent, dummy, 0.0);
159  //create G4Decayproducts
160  G4DecayProducts *products = new G4DecayProducts(*parentparticle);
161  delete parentparticle;
162 
163  G4int i = 0;
164 
165  G4double eps = EMASS/EMMU;
166 
167  G4double som0, x, y, xx, yy, zz;
168  G4double cthetaE, cthetaG, cthetaGE, phiE, phiG;
169  const size_t MAX_LOOP=10000;
170 
171  for (size_t loop_counter1=0; loop_counter1 <MAX_LOOP; ++loop_counter1){
172 
173 // leap1:
174 
175  i++;
176 
177 // leap2:
178 
179  for (size_t loop_counter2=0; loop_counter2 <MAX_LOOP; ++loop_counter2){
180 //
181 //--------------------------------------------------------------------------
182 // Build two vectors of random length and random direction, for the
183 // positron and the photon.
184 // x/y is the length of the vector, xx, yy and zz the components,
185 // phi is the azimutal angle, theta the polar angle.
186 //--------------------------------------------------------------------------
187 //
188 // For the positron
189 //
190  x = G4UniformRand();
191 
192  rn3dim(xx,yy,zz,x);
193 
194  if(std::fabs((xx*xx)+(yy*yy)+(zz*zz)-(x*x))>0.001){
195  G4cout << "Norm of x not correct" << G4endl;
196  }
197 
198  phiE = atan4(xx,yy);
199  cthetaE = zz/x;
200  G4double sthetaE = std::sqrt((xx*xx)+(yy*yy))/x;
201 //
202 // What you get:
203 //
204 // x = positron energy
205 // phiE = azimutal angle of positron momentum
206 // cthetaE = cosine of polar angle of positron momentum
207 // sthetaE = sine of polar angle of positron momentum
208 //
214 //
215 //-----------------------------------------------------------------------
216 //
217 // For the photon
218 //
219  y = G4UniformRand();
220 
221  rn3dim(xx,yy,zz,y);
222 
223  if(std::fabs((xx*xx)+(yy*yy)+(zz*zz)-(y*y))>0.001){
224  G4cout << " Norm of y not correct " << G4endl;
225  }
226 
227  phiG = atan4(xx,yy);
228  cthetaG = zz/y;
229  G4double sthetaG = std::sqrt((xx*xx)+(yy*yy))/y;
230 //
231 // What you get:
232 //
233 // y = photon energy
234 // phiG = azimutal angle of photon momentum
235 // cthetaG = cosine of polar angle of photon momentum
236 // sthetaG = sine of polar angle of photon momentum
237 //
243 //
244 //-----------------------------------------------------------------------
245 //
246 // Maybe certain restrictions on the kinematical variables:
247 //
252 //
253 //-----------------------------------------------------------------------
254 //
255 // Calculate the angle between positron and photon (cosine)
256 //
257  cthetaGE = cthetaE*cthetaG+sthetaE*sthetaG*std::cos(phiE-phiG);
258 //
262 //
263 //-----------------------------------------------------------------------
264 //
265  G4double term0 = eps*eps;
266  G4double term1 = x*((1.0-eps)*(1.0-eps))+2.0*eps;
267  G4double beta = std::sqrt( x*((1.0-eps)*(1.0-eps))*
268  (x*((1.0-eps)*(1.0-eps))+4.0*eps))/term1;
269  G4double delta = 1.0-beta*cthetaGE;
270 
271  G4double term3 = y*(1.0-(eps*eps));
272  G4double term6 = term1*delta*term3;
273 
274  G4double Qsqr = (1.0-term1-term3+term0+0.5*term6)/((1.0-eps)*(1.0-eps));
275 //
276 //-----------------------------------------------------------------------
277 //
278 // Check the kinematics.
279 //
280  if ( Qsqr>=0.0 && Qsqr<=1.0 ) break;
281  }
282 //
284 //
285 // Do the calculation for -1 muon polarization (i.e. mu+)
286 //
287  G4double Pmu = -1.0;
288  if (GetParentName() == "mu-")Pmu = +1.0;
289 //
290 // and for Fronsdal
291 //
292 //-----------------------------------------------------------------------
293 //
294  som0 = fron(Pmu,x,y,cthetaE,cthetaG,cthetaGE);
295 //
303 //
304 //-----------------------------------------------------------------------
305 //
307 //
308 //----------------------------------------------------------------------
309 //
310 // Sample the decay rate
311 //
312 
313  if (G4UniformRand()*177.0 <= som0) break;
314  }
315 
317 //
318 //-----------------------------------------------------------------------
319 //
320  G4double E = EMMU/2.*(x*((1.-eps)*(1.-eps))+2.*eps);
321  G4double G = EMMU/2.*y*(1.-eps*eps);
322 //
323 //-----------------------------------------------------------------------
324 //
325 
326  if(E < EMASS) E = EMASS;
327 
328  // calculate daughter momentum
329  G4double daughtermomentum[4];
330 
331  daughtermomentum[0] = std::sqrt(E*E - EMASS*EMASS);
332 
333  G4double sthetaE = std::sqrt(1.-cthetaE*cthetaE);
334  G4double cphiE = std::cos(phiE);
335  G4double sphiE = std::sin(phiE);
336 
337  //Coordinates of the decay positron with respect to the muon spin
338 
339  G4double px = sthetaE*cphiE;
340  G4double py = sthetaE*sphiE;
341  G4double pz = cthetaE;
342 
343  G4ThreeVector direction0(px,py,pz);
344 
345  direction0.rotateUz(parent_polarization);
346 
347  G4DynamicParticle * daughterparticle0
348  = new G4DynamicParticle( G4MT_daughters[0], daughtermomentum[0]*direction0);
349 
350  products->PushProducts(daughterparticle0);
351 
352  daughtermomentum[1] = G;
353 
354  G4double sthetaG = std::sqrt(1.-cthetaG*cthetaG);
355  G4double cphiG = std::cos(phiG);
356  G4double sphiG = std::sin(phiG);
357 
358  //Coordinates of the decay gamma with respect to the muon spin
359 
360  px = sthetaG*cphiG;
361  py = sthetaG*sphiG;
362  pz = cthetaG;
363 
364  G4ThreeVector direction1(px,py,pz);
365 
366  direction1.rotateUz(parent_polarization);
367 
368  G4DynamicParticle * daughterparticle1
369  = new G4DynamicParticle( G4MT_daughters[1], daughtermomentum[1]*direction1);
370 
371  products->PushProducts(daughterparticle1);
372 
373  // daughter 3 ,4 (neutrinos)
374  // create neutrinos in the C.M frame of two neutrinos
375 
376  G4double energy2 = parentmass*(1.0 - (x+y)/2.0);
377 
378  G4double vmass2 = energy2*energy2 -
379  (daughtermomentum[0]*direction0+daughtermomentum[1]*direction1)*
380  (daughtermomentum[0]*direction0+daughtermomentum[1]*direction1);
381  G4double vmass = std::sqrt(vmass2);
382 
383  G4double beta = (daughtermomentum[0]+daughtermomentum[1])/energy2;
384  beta = -1.0 * std::min(beta,0.99);
385 
386  G4double costhetan = 2.*G4UniformRand()-1.0;
387  G4double sinthetan = std::sqrt((1.0-costhetan)*(1.0+costhetan));
388  G4double phin = twopi*G4UniformRand()*rad;
389  G4double sinphin = std::sin(phin);
390  G4double cosphin = std::cos(phin);
391 
392  G4ThreeVector direction2(sinthetan*cosphin,sinthetan*sinphin,costhetan);
393 
394  G4DynamicParticle * daughterparticle2
395  = new G4DynamicParticle( G4MT_daughters[2], direction2*(vmass/2.));
396  G4DynamicParticle * daughterparticle3
397  = new G4DynamicParticle( G4MT_daughters[3], direction2*(-1.0*vmass/2.));
398 
399  // boost to the muon rest frame
400 
401  G4ThreeVector direction34(direction0.x()+direction1.x(),
402  direction0.y()+direction1.y(),
403  direction0.z()+direction1.z());
404  direction34 = direction34.unit();
405 
406  G4LorentzVector p4 = daughterparticle2->Get4Momentum();
407  p4.boost(direction34.x()*beta,direction34.y()*beta,direction34.z()*beta);
408  daughterparticle2->Set4Momentum(p4);
409 
410  p4 = daughterparticle3->Get4Momentum();
411  p4.boost(direction34.x()*beta,direction34.y()*beta,direction34.z()*beta);
412  daughterparticle3->Set4Momentum(p4);
413 
414  products->PushProducts(daughterparticle2);
415  products->PushProducts(daughterparticle3);
416 
417  daughtermomentum[2] = daughterparticle2->GetTotalMomentum();
418  daughtermomentum[3] = daughterparticle3->GetTotalMomentum();
419 
420 // output message
421 #ifdef G4VERBOSE
422  if (GetVerboseLevel()>1) {
423  G4cout << "G4MuonRadiativeDecayChannelWithSpin::DecayIt ";
424  G4cout << " create decay products in rest frame " <<G4endl;
425  products->DumpInfo();
426  }
427 #endif
428  return products;
429 }
Double_t yy
void CheckAndFillDaughters()
Int_t index
G4int PushProducts(G4DynamicParticle *aParticle)
G4ParticleDefinition * G4MT_parent
void rn3dim(G4double &x, G4double &y, G4double &z, G4double xlong)
G4ParticleDefinition ** G4MT_daughters
Double_t xx
const G4String & GetParentName() const
G4double GetTotalMomentum() const
static const G4double eps
int G4int
Definition: G4Types.hh:78
Double_t y
#define G4UniformRand()
Definition: Randomize.hh:97
G4GLOB_DLL std::ostream G4cout
HepLorentzVector & boost(double, double, double)
Hep3Vector unit() const
static const double twopi
Definition: G4SIunits.hh:75
G4ThreeVector parent_polarization
G4double fron(G4double Pmu, G4double x, G4double y, G4double cthetaE, G4double cthetaG, G4double cthetaEG)
static const double rad
Definition: G4SIunits.hh:148
Double_t zz
void Set4Momentum(const G4LorentzVector &momentum)
void DumpInfo() const
G4LorentzVector Get4Momentum() const
#define G4endl
Definition: G4ios.hh:61
G4int GetVerboseLevel() const
double G4double
Definition: G4Types.hh:76
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◆ fron()

G4double G4MuonRadiativeDecayChannelWithSpin::fron ( G4double  Pmu,
G4double  x,
G4double  y,
G4double  cthetaE,
G4double  cthetaG,
G4double  cthetaEG 
)
private

Definition at line 431 of file G4MuonRadiativeDecayChannelWithSpin.cc.

437 {
438  G4double mu = 105.65;
439  G4double me = 0.511;
440  G4double rho = 0.75;
441  G4double del = 0.75;
442  G4double eps = 0.0;
443  G4double kap = 0.0;
444  G4double ksi = 1.0;
445 
446  G4double delta = 1-cthetaGE;
447 
448 // Calculation of the functions f(x,y)
449 
450  G4double f_1s = 12.0*((y*y)*(1.0-y)+x*y*(2.0-3.0*y)
451  +2.0*(x*x)*(1.0-2.0*y)-2.0*(x*x*x));
452  G4double f0s = 6.0*(-x*y*(2.0-3.0*(y*y))
453  -2.0*(x*x)*(1.0-y-3.0*(y*y))+2.0*(x*x*x)*(1.0+2.0*y));
454  G4double f1s = 3.0*((x*x)*y*(2.0-3.0*y-3.0*(y*y))
455  -(x*x*x)*y*(4.0+3.0*y));
456  G4double f2s = 1.5*((x*x*x)*(y*y)*(2.0+y));
457 
458  G4double f_1se = 12.0*(x*y*(1.0-y)+(x*x)*(2.0-3.0*y)
459  -2.0*(x*x*x));
460  G4double f0se = 6.0*(-(x*x)*(2.0-y-2.0*(y*y))
461  +(x*x*x)*(2.0+3.0*y));
462  G4double f1se = -3.0*(x*x*x)*y*(2.0+y);
463  G4double f2se = 0.0;
464 
465  G4double f_1sg = 12.0*((y*y)*(1.0-y)+x*y*(1.0-2.0*y)
466  -(x*x)*y);
467  G4double f0sg = 6.0*(-x*(y*y)*(2.0-3.0*y)-(x*x)*y*(1.0-4.0*y)
468  +(x*x*x)*y);
469  G4double f1sg = 3.0*((x*x)*(y*y)*(1.0-3.0*y)
470  -2.0*(x*x*x)*(y*y));
471  G4double f2sg = 1.5*(x*x*x)*(y*y*y);
472 
473  G4double f_1v = 8.0*((y*y)*(3.0-2.0*y)+6.0*x*y*(1.0-y)
474  +2.0*(x*x)*(3.0-4.0*y)-4.0*(x*x*x));
475  G4double f0v = 8.0*(-x*y*(3.0-y-(y*y))-(x*x)*(3.0-y-4.0*(y*y))
476  +2.0*(x*x*x)*(1.0+2.0*y));
477  G4double f1v = 2.0*((x*x)*y*(6.0-5.0*y-2.0*(y*y))
478  -2.0*(x*x*x)*y*(4.0+3.0*y));
479  G4double f2v = 2.0*(x*x*x)*(y*y)*(2.0+y);
480 
481  G4double f_1ve = 8.0*(x*y*(1.0-2.0*y)
482  +2.0*(x*x)*(1.0-3.0*y)-4.0*(x*x*x));
483  G4double f0ve = 4.0*(-(x*x)*(2.0-3.0*y-4.0*(y*y))
484  +2.0*(x*x*x)*(2.0+3.0*y));
485  G4double f1ve = -4.0*(x*x*x)*y*(2.0+y);
486  G4double f2ve = 0.0;
487 
488  G4double f_1vg = 8.0*((y*y)*(1.0-2.0*y)+x*y*(1.0-4.0*y)
489  -2.0*(x*x)*y);
490  G4double f0vg = 4.0*(2.0*x*(y*y)*(1.0+y)-(x*x)*y*(1.0-4.0*y)
491  +2.0*(x*x*x)*y);
492  G4double f1vg = 2.0*((x*x)*(y*y)*(1.0-2.0*y)
493  -4.0*(x*x*x)*(y*y));
494  G4double f2vg = 2.0*(x*x*x)*(y*y*y);
495 
496  G4double f_1t = 8.0*((y*y)*(3.0-y)+3.0*x*y*(2.0-y)
497  +2.0*(x*x)*(3.0-2.0*y)-2.0*(x*x*x));
498  G4double f0t = 4.0*(-x*y*(6.0+(y*y))
499  -2.0*(x*x)*(3.0+y-3.0*(y*y))+2.0*(x*x*x)*(1.0+2.0*y));
500  G4double f1t = 2.0*((x*x)*y*(6.0-5.0*y+(y*y))
501  -(x*x*x)*y*(4.0+3.0*y));
502  G4double f2t = (x*x*x)*(y*y)*(2.0+y);
503 
504  G4double f_1te = -8.0*(x*y*(1.0+3.0*y)+(x*x)*(2.0+3.0*y)
505  +2.0*(x*x*x));
506  G4double f0te = 4.0*((x*x)*(2.0+3.0*y+4.0*(y*y))
507  +(x*x*x)*(2.0+3.0*y));
508  G4double f1te = -2.0*(x*x*x)*y*(2.0+y);
509  G4double f2te = 0.0;
510 
511  G4double f_1tg = -8.0*((y*y)*(1.0+y)+x*y+(x*x)*y);
512  G4double f0tg = 4.0*(x*(y*y)*(2.0-y)+(x*x)*y*(1.0+2.0*y)
513  +(x*x*x)*y);
514  G4double f1tg = -2.0*((x*x)*(y*y)*(1.0-y)+2.0*(x*x*x)*y);
515  G4double f2tg = (x*x*x)*(y*y*y);
516 
517  G4double term = delta+2.0*(me*me)/((mu*mu)*(x*x));
518  term = 1.0/term;
519 
520  G4double nss = term*f_1s+f0s+delta*f1s+(delta*delta)*f2s;
521  G4double nv = term*f_1v+f0v+delta*f1v+(delta*delta)*f2v;
522  G4double nt = term*f_1t+f0t+delta*f1t+(delta*delta)*f2t;
523 
524  G4double nse = term*f_1se+f0se+delta*f1se+(delta*delta)*f2se;
525  G4double nve = term*f_1ve+f0ve+delta*f1ve+(delta*delta)*f2ve;
526  G4double nte = term*f_1te+f0te+delta*f1te+(delta*delta)*f2te;
527 
528  G4double nsg = term*f_1sg+f0sg+delta*f1sg+(delta*delta)*f2sg;
529  G4double nvg = term*f_1vg+f0vg+delta*f1vg+(delta*delta)*f2vg;
530  G4double ntg = term*f_1tg+f0tg+delta*f1tg+(delta*delta)*f2tg;
531 
532  G4double term1 = nv;
533  G4double term2 = 2.0*nss+nv-nt;
534  G4double term3 = 2.0*nss-2.0*nv+nt;
535 
536  G4double term1e = 1.0/3.0*(1.0-4.0/3.0*del);
537  G4double term2e = 2.0*nse+5.0*nve-nte;
538  G4double term3e = 2.0*nse-2.0*nve+nte;
539 
540  G4double term1g = 1.0/3.0*(1.0-4.0/3.0*del);
541  G4double term2g = 2.0*nsg+5.0*nvg-ntg;
542  G4double term3g = 2.0*nsg-2.0*nvg+ntg;
543 
544  G4double som00 = term1+(1.0-4.0/3.0*rho)*term2+eps*term3;
545  G4double som01 = Pmu*ksi*(cthetaE*(nve-term1e*term2e+kap*term3e)
546  +cthetaG*(nvg-term1g*term2g+kap*term3g));
547 
548  G4double som0 = (som00+som01)/y;
549  som0 = fine_structure_const/8./(twopi*twopi*twopi)*som0;
550 
551 // G4cout << x << " " << y << " " << som00 << " "
552 // << som01 << " " << som0 << G4endl;
553 
554  return som0;
555 }
static const G4double eps
Double_t y
int fine_structure_const
Definition: hepunit.py:287
static const double twopi
Definition: G4SIunits.hh:75
double G4double
Definition: G4Types.hh:76
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◆ operator=()

G4MuonRadiativeDecayChannelWithSpin & G4MuonRadiativeDecayChannelWithSpin::operator= ( const G4MuonRadiativeDecayChannelWithSpin right)
protected

Definition at line 100 of file G4MuonRadiativeDecayChannelWithSpin.cc.

101 {
102  if (this != &right) {
104  verboseLevel = right.verboseLevel;
105  rbranch = right.rbranch;
106 
107  // copy parent name
108  parent_name = new G4String(*right.parent_name);
109 
110  // clear daughters_name array
112 
113  // recreate array
115  if ( numberOfDaughters >0 ) {
118  //copy daughters name
119  for (G4int index=0; index < numberOfDaughters; index++) {
121  }
122  }
124  }
125  return *this;
126 }
Int_t index
int G4int
Definition: G4Types.hh:78
G4String kinematics_name
G4String * parent_name
G4ThreeVector parent_polarization
G4String ** daughters_name
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◆ rn3dim()

void G4MuonRadiativeDecayChannelWithSpin::rn3dim ( G4double x,
G4double y,
G4double z,
G4double  xlong 
)
inlineprivate

Definition at line 102 of file G4MuonRadiativeDecayChannelWithSpin.hh.

106 {
107  G4double a = 0.; G4double b = 0.; G4double c = 0.; G4double r = 0.;
108 
109  do {
110  a = G4UniformRand() - 0.5;
111  b = G4UniformRand() - 0.5;
112  c = G4UniformRand() - 0.5;
113  r = a*a + b*b + c*c;
114  } while (r > 0.25);// Loop checking, 09.08.2015, K.Kurashige
115 
116  G4double rinv = xlong/(std::sqrt(r));
117  x = a * rinv;
118  y = b * rinv;
119  z = c * rinv;
120 
121  return;
122 }
Double_t y
#define G4UniformRand()
Definition: Randomize.hh:97
double G4double
Definition: G4Types.hh:76
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The documentation for this class was generated from the following files: