ParticleDecaysMC.h File Reference

#include <cmath>
#include <vector>
#include <map>
#include "HRGEventGenerator/SimpleParticle.h"

Go to the source code of this file.

Namespaces
namespace	thermalfist
	The main namespace where all classes and functions of the Thermal-FIST library reside.
namespace	thermalfist::ParticleDecaysMC
	Contains functions for Monte Carlo generation of decays.

Functions
double	thermalfist::ParticleDecaysMC::ThreeBodym12F2 (double m12, double M, double m1, double m2, double m3)
	Square of the \(m_{12}\) probability density function used in a three-body decay (unnormalized)
double	thermalfist::ParticleDecaysMC::TernaryThreeBodym12Maximum (double M, double m1, double m2, double m3)
	Determines the maximum of the \(m_{12}\) probability density function used in a three-body decay.
double	thermalfist::ParticleDecaysMC::GetRandomThreeBodym12 (double M, double m1, double m2, double m3, double fm12max)
	Sample the invariant mass \(m_{12}\) of the leading two daughter particles in a three-body decay.
SimpleParticle	thermalfist::ParticleDecaysMC::LorentzBoost (const SimpleParticle &part, double vx, double vy, double vz)
	Lorentz boost of the 4-momentum and 4-coordinate of a particle.
SimpleParticle	thermalfist::ParticleDecaysMC::LorentzBoostMomentumOnly (const SimpleParticle &part, double vx, double vy, double vz)
	Lorentz boost of the 4-momentum of a particle.
SimpleParticle	thermalfist::ParticleDecaysMC::LorentzBoostMomentaAndCoordinates (const SimpleParticle &part, double vx, double vy, double vz)
	Lorentz boost of the 4-coordinate and 4-momentum of a particle.
std::vector< SimpleParticle >	thermalfist::ParticleDecaysMC::TwoBodyDecay (const SimpleParticle &Mother, double m1, long long pdg1, double m2, long long pdg2)
	Samples the decay products of a two-body decay.
std::vector< SimpleParticle >	thermalfist::ParticleDecaysMC::ManyBodyDecay (const SimpleParticle &Mother, std::vector< double > masses, std::vector< long long > pdgs)
	Samples the decay products of a many-body decay.
void	thermalfist::ParticleDecaysMC::ShuffleDecayProducts (std::vector< double > &masses, std::vector< long long > &pdgs)
	Shuffles the decay products.
double	thermalfist::ParticleDecaysMC::ParticleDistanceSquared (const SimpleParticle &part1, const SimpleParticle &part2)
	Return the square of the distance between particles at equal time.
double	thermalfist::ParticleDecaysMC::ComputeDCA (const SimpleParticle &part)
	Computes the distance of closest approach (DCA) to the origin.

Variables
int	thermalfist::ParticleDecaysMC::threebodysucc = 0
	Used for debugging the succes rate in the rejection sampling of \(m_{12}\).
int	thermalfist::ParticleDecaysMC::threebodytot = 0