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geant4/source/processes/electromagnetic/muons/include/G4RiGeAngularGenerator.hh
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2025-06-26 09:17:29 +02:00

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//
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// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name: G4RiGeAngularGenerator
//
// Authors: Gerardo Depaola & Ricardo Pacheco
//
// Creation date: 29 October 2024
//
// -------------------------------------------------------------------
//
#ifndef G4RiGeAngularGenerator_h
#define G4RiGeAngularGenerator_h 1
#include "G4ios.hh"
#include "globals.hh"
#include "G4VEmAngularDistribution.hh"
#include "G4LorentzVector.hh"
class G4RiGeAngularGenerator : public G4VEmAngularDistribution
{
public:
G4RiGeAngularGenerator();
~G4RiGeAngularGenerator() override = default;
G4ThreeVector& SampleDirection(const G4DynamicParticle* dp,
G4double gEnergy, G4int Z,
const G4Material* mat = nullptr) override;
void Sample5DPairDirections(const G4DynamicParticle* dp,
G4ThreeVector& dirElectron,
G4ThreeVector& dirPositron,
const G4double gEnergy, const G4double q2,
const G4double gMomentum,
G4double muFinalMomentum,
G4double muFinalEnergy,
const G4double* randNumbs,
const G4double* W);
void PhiRotation(G4ThreeVector& dir, G4double phi);
G4LorentzVector eDP2(G4double x1, G4double x2, G4double x3, G4double x4, G4double x5);
G4LorentzVector pDP2(G4double x3, const G4LorentzVector& x6);
void PrintGeneratorInformation() const override;
// hide assignment operator
G4RiGeAngularGenerator& operator=(const G4RiGeAngularGenerator& right) = delete;
G4RiGeAngularGenerator(const G4RiGeAngularGenerator&) = delete;
private:
G4double SampleCosTheta(G4double primKinEnergy, G4double gEnergy, G4double mass);
};
#endif