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PYTHIA
8.311
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#include <HelicityMatrixElements.h>
Public Member Functions | |
| void | initConstants () |
| Initialize the constants for the helicity matrix element. More... | |
| void | initWaves (vector< HelicityParticle > &) |
| Initialize spinors for the helicity matrix element. | |
| complex | calculateME (vector< int >) |
| Return element for the helicity matrix element. | |
 Public Member Functions inherited from HelicityMatrixElement | |
| HelicityMatrixElement () | |
| Constructor and destructor. | |
| virtual void | initPointers (ParticleData *, CoupSM *, Settings *=0) |
| Initialize the physics matrices and pointers. More... | |
| virtual HelicityMatrixElement * | initChannel (vector< HelicityParticle > &) |
| Initialize the channel. More... | |
| virtual double | decayWeight (vector< HelicityParticle > &) |
| Calculate the matrix element weight for a decay. More... | |
| virtual double | decayWeightMax (vector< HelicityParticle > &) |
| Calculate the maximum matrix element decay weight. | |
| virtual void | calculateD (vector< HelicityParticle > &) |
| Calculate the decay matrix for a particle. More... | |
| virtual void | calculateRho (unsigned int, vector< HelicityParticle > &) |
| Calculate the density matrix for a particle. More... | |
| void | setFermionLine (int, HelicityParticle &, HelicityParticle &) |
| Set a fermion line. More... | |
| virtual complex | breitWigner (double s, double M, double G) |
| Calculate Breit-Wigner's with running widths and fixed. More... | |
| virtual complex | sBreitWigner (double m0, double m1, double s, double M, double G) |
| Return an s-wave BreitWigner. | |
| virtual complex | pBreitWigner (double m0, double m1, double s, double M, double G) |
| Return a p-wave BreitWigner. | |
| virtual complex | dBreitWigner (double m0, double m1, double s, double M, double G) |
| Return a d-wave BreitWigner. | |
Additional Inherited Members | |
| Protected Attributes inherited from HelicityMatrixElement | |
| double | DECAYWEIGHTMAX |
| Maximum decay weight. WARNING: hardcoded constant. | |
| vector< GammaMatrix > | gamma |
| Physics matrices. | |
| vector< int > | pMap |
| Particle map vector. | |
| vector< int > | pID |
| Particle ID vector. | |
| vector< double > | pM |
| Particle mass vector. | |
| vector< vector< Wave4 > > | u |
| Wave functions. | |
| ParticleData * | particleDataPtr |
| Pointer to particle data. | |
| CoupSM * | coupSMPtr |
| Pointer to Standard Model constants. | |
| Settings * | settingsPtr |
| Pointer to Settings. | |
Helicity matrix element for the hard process of two fermions -> W/W' -> two fermions.
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virtual |
Initialize the constants for the helicity matrix element.
Helicity matrix element for two fermions -> W/W' -> two fermions. This matrix element handles s-channel hard processes in addition to t-channel, assuming the first two particles are a fermion line and the second two particles are a fermion line. This matrix element is not scaled with respect to W/W' propagator energy as currently this matrix element is used only for calculating helicity density matrices.
Set the constants for the W'.
The default constants (SM W).
Reimplemented from HelicityMatrixElement.
1.8.11
