thermalfist::RandomGenerators::HypersurfaceMomentumGenerator Class Reference

Class for generating momentum of a particle from a hypersurface. More...

#include <HypersurfaceSampler.h>

Inheritance diagram for thermalfist::RandomGenerators::HypersurfaceMomentumGenerator:

Classes
struct	HypersurfaceMomentumGeneratorConfiguration
	Configuration structure for the HypersurfaceMomentumGenerator. More...

Public Member Functions
	HypersurfaceMomentumGenerator (const ParticlizationHypersurface *hypersurface=NULL, const ThermalParticle *particle=NULL, const VolumeElementSampler *positionsampler=NULL, const HypersurfaceMomentumGeneratorConfiguration &config=HypersurfaceMomentumGeneratorConfiguration())
	Construct a new BoostInvariantMomentumGenerator object.
virtual	~HypersurfaceMomentumGenerator ()
	BoostInvariantMomentumGenerator desctructor.
double	EtaSmear () const
double	Mass () const
bool	ShearCorrection () const
bool	BulkCorrection () const
double	SpeedOfSoundSquared () const
virtual std::vector< double >	GetMomentum (double mass=-1.) const
Public Member Functions inherited from thermalfist::RandomGenerators::ParticleMomentumGenerator
	ParticleMomentumGenerator ()
	Default constructor.
virtual	~ParticleMomentumGenerator ()
	Destructor.

Static Public Member Functions
static std::vector< double >	SamplePhaseSpaceCoordinateFromElement (const ParticlizationHypersurfaceElement *elem, const ThermalParticle *particle, const double &mass=-1., const double &etasmear=0., const bool shear_correction=false, const bool bulk_correction=false, const double speed_of_sound_squared=0.15)
	Samples the Cartesian phase-space coordinates of a particle emmited from a hypersurface element.

Detailed Description

Class for generating momentum of a particle from a hypersurface.

First chooses the hypersurface element multinomially, then sample the momentum from it. Stricly valid only for the ideal gas equation of state, but may be a sufficient approximation for interacting models in some cases as well.

Definition at line 59 of file HypersurfaceSampler.h.

Constructor & Destructor Documentation

HypersurfaceMomentumGenerator()

thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::HypersurfaceMomentumGenerator	(	const ParticlizationHypersurface *	hypersurface = NULL,
		const ThermalParticle *	particle = NULL,
		const VolumeElementSampler *	positionsampler = NULL,
		const HypersurfaceMomentumGeneratorConfiguration &	config = HypersurfaceMomentumGeneratorConfiguration() )

Construct a new BoostInvariantMomentumGenerator object.

Parameters

hypersurface	Pointer to a ParticlizationHypersurface object. Not deleted on destruction!
particle	Pointer to a ThermalParticle object. Not deleted on destruction!
positionsampler	Pointer to a VolumeElementSampler object. Not deleted on destruction!
config	Configuration object for the HypersurfaceMomentumGenerator

Definition at line 72 of file HypersurfaceSampler.cpp.

~HypersurfaceMomentumGenerator()

virtual thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::~HypersurfaceMomentumGenerator ( )

inlinevirtual

BoostInvariantMomentumGenerator desctructor.

Will free the memory used by the object pointed to by m_FreezeoutModel

Definition at line 127 of file HypersurfaceSampler.h.

Member Function Documentation

BulkCorrection()

bool thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::BulkCorrection ( ) const

inline

Definition at line 132 of file HypersurfaceSampler.h.

EtaSmear()

double thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::EtaSmear ( ) const

inline

Definition at line 129 of file HypersurfaceSampler.h.

GetMomentum()

std::vector< double > thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::GetMomentum ( double mass = -1. ) const

virtual

Samples the 3-momentum of a particle

Parameters

mass	The mass of a particle. If negative value provided, defaults to the pole/vacuum mass

Returns

std::vector<double> A vector containing the sampled \(p_x\), \(p_y\), \(p_z\) components of the three-momentum, and, additionally, the space-time Cartesian coordinates \(r_0\), \(r_x\), \(r_y\), \(r_z\) in the collision center-of-mass frame

Implements thermalfist::RandomGenerators::ParticleMomentumGenerator.

Definition at line 88 of file HypersurfaceSampler.cpp.

Mass()

double thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::Mass ( ) const

inline

Definition at line 130 of file HypersurfaceSampler.h.

SamplePhaseSpaceCoordinateFromElement()

std::vector< double > thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::SamplePhaseSpaceCoordinateFromElement ( const ParticlizationHypersurfaceElement * elem, const ThermalParticle * particle, const double & mass = -1., const double & etasmear = 0., const bool shear_correction = false, const bool bulk_correction = false, const double speed_of_sound_squared = 0.15 )

static

Samples the Cartesian phase-space coordinates of a particle emmited from a hypersurface element.

Parameters

hypersurface	Pointer to a ParticlizationHypersurface object.
particle	Pointer to a ThermalParticle object representing the particle to sample.
mass	Particle mass in GeV. If negative, the pole/vacuum mass is used.
etasmear	The smear in longitudinal rapidity
shear_correction	Use shear viscous corrections for the momenta of the particles
bulk_correction	Use bulk viscous corrections for the momenta of the particles
speed_of_sound_squared	The speed of sound squared in the medium

Returns

A vector of 7 elements, the first 3 elements are the three-momentum (px,py,pz) in GeV, the remaining four elements is the space-time coordinate (r0,rx,ry,rz) in fm/c

Definition at line 565 of file HypersurfaceSampler.cpp.

ShearCorrection()

bool thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::ShearCorrection ( ) const

inline

Definition at line 131 of file HypersurfaceSampler.h.

SpeedOfSoundSquared()

double thermalfist::RandomGenerators::HypersurfaceMomentumGenerator::SpeedOfSoundSquared ( ) const

inline

Definition at line 133 of file HypersurfaceSampler.h.

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The documentation for this class was generated from the following files:

• include/HRGEventGenerator/HypersurfaceSampler.h
• src/library/HRGEventGenerator/HypersurfaceSampler.cpp