#include <HIUserHooks.h>

Inheritance diagram for Pythia8::SubCollisionModel:

Classes
struct	SigEst
	Internal class to report cross section estimates. More...

Public Member Functions
	SubCollisionModel ()
	The default constructor is empty.

virtual	~SubCollisionModel ()
	Virtual destructor,.

virtual bool	init ()
	Virtual init method.

void	initPtr (NucleusModel &projIn, NucleusModel &targIn, SigmaTotal &sigTotIn, Settings &settingsIn, Info &infoIn, Rndm &rndIn)

virtual multiset< SubCollision >	getCollisions (vector< Nucleon > &proj, vector< Nucleon > &targ, const Vec4 &bvec, double &T)=0

double	sigTot () const
	The total cross section. More...

double	sigEl () const
	The total cross section.

double	sigCDE () const
	The central diffractive excitation cross section.

double	sigSDE () const
	The single diffractive excitation cross section (both sides summed).

double	sigSDEP () const
	The single diffractive excitation cross section (excited projectile).

double	sigSDET () const
	The single diffractive excitation cross section (excited target).

double	sigDDE () const
	The double diffractive excitation cross section.

double	sigND () const
	The non-diffractive (absorptive) cross section.

double	bSlope () const
	The elastic b-slope parameter.

virtual SigEst	getSig () const
	Calculate the cross sections for the given set of parameters.

double	avNDB () const
	Return the average non-diffractive impact parameter.

double	Chi2 (const SigEst &sigs, int npar) const
	Calculate the Chi2 for the given cross section estimates.

virtual bool	evolve ()
	Use a simlified genetic algorithm to fit the parameters.

virtual void	setParm (const vector< double > &)
	Set the parameters of this model.

virtual vector< double >	getParm () const

virtual vector< double >	minParm () const

virtual vector< double >	maxParm () const

	SubCollisionModel ()
	The default constructor is empty.

virtual	~SubCollisionModel ()
	Virtual destructor,.

virtual bool	init ()
	Virtual init method.

void	initPtr (NucleusModel &projIn, NucleusModel &targIn, SigmaTotal &sigTotIn, Settings &settingsIn, Info &infoIn, Rndm &rndIn)

virtual multiset< SubCollision >	getCollisions (vector< Nucleon > &proj, vector< Nucleon > &targ, const Vec4 &bvec, double &T)=0

double	sigTot () const
	The total cross section. More...

double	sigEl () const
	The total cross section.

double	sigCDE () const
	The central diffractive excitation cross section.

double	sigSDE () const
	The single diffractive excitation cross section (both sides summed).

double	sigSDEP () const
	The single diffractive excitation cross section (excited projectile).

double	sigSDET () const
	The single diffractive excitation cross section (excited target).

double	sigDDE () const
	The double diffractive excitation cross section.

double	sigND () const
	The non-diffractive (absorptive) cross section.

double	bSlope () const
	The elastic b-slope parameter.

virtual SigEst	getSig () const
	Calculate the cross sections for the given set of parameters.

double	avNDB () const
	Return the average non-diffractive impact parameter.

double	Chi2 (const SigEst &sigs, int npar) const
	Calculate the Chi2 for the given cross section estimates.

virtual bool	evolve ()
	Use a simlified genetic algorithm to fit the parameters.

virtual void	setParm (const vector< double > &)
	Set the parameters of this model.

virtual vector< double >	getParm () const

virtual vector< double >	minParm () const

virtual vector< double >	maxParm () const

Protected Attributes
int	NInt

int	NGen

int	NPop

double	sigFuzz

bool	fitPrint

double	avNDb

NucleusModel *	projPtr
	Info from the controlling HeavyIons object.

NucleusModel *	targPtr

SigmaTotal *	sigTotPtr

Settings *	settingsPtr

Info *	infoPtr

Rndm *	rndPtr

Detailed Description

The SubCollisionModel is is able to model the collision between two nucleons to tell which type of collision has occurred. The model may manipulate the corresponing state of the nucleons.

Definition at line 449 of file HIUserHooks.h.

Member Function Documentation

virtual multiset<SubCollision> Pythia8::SubCollisionModel::getCollisions	(	vector< Nucleon > &	proj,
		vector< Nucleon > &	targ,
		const Vec4 &	bvec,
		double &	T
	)

pure virtual

Take two vectors of Nucleons and an impact parameter vector and produce the corrsponding sub-collisions. Note that states of the nucleons may be changed. The function in this abstract base class will reset the nucleon states for convenience. The sub-collisions are ordered in the impact parameter distance between the nucleons. The T-variable will be set to the summed elastic amplityde.

Implemented in Pythia8::MultiRadial, Pythia8::MultiRadial, Pythia8::DoubleStrikman, Pythia8::DoubleStrikman, Pythia8::NaiveSubCollisionModel, Pythia8::NaiveSubCollisionModel, and Pythia8::BlackSubCollisionModel.

multiset< SubCollision > Pythia8::SubCollisionModel::getCollisions	(	vector< Nucleon > &	proj,
		vector< Nucleon > &	targ,
		const Vec4 &	bvec,
		double &	T
	)

pure virtual

Take two vectors of Nucleons and an impact parameter vector and produce the corrsponding sub-collisions. Note that states of the nucleons may be changed. The function in this abstract base class will reset the nucleon states for convenience. The sub-collisions are ordered in the impact parameter distance between the nucleons. The T-variable will be set to the summed elastic amplityde.

Implemented in Pythia8::MultiRadial, Pythia8::MultiRadial, Pythia8::DoubleStrikman, Pythia8::DoubleStrikman, Pythia8::NaiveSubCollisionModel, Pythia8::NaiveSubCollisionModel, and Pythia8::BlackSubCollisionModel.

Definition at line 514 of file HIUserHooks.cc.

Referenced by Pythia8::NaiveSubCollisionModel::getCollisions(), Pythia8::BlackSubCollisionModel::getCollisions(), Pythia8::DoubleStrikman::getCollisions(), Pythia8::MultiRadial::getCollisions(), and Pythia8::Angantyr::next().

virtual vector<double> Pythia8::SubCollisionModel::getParm ( ) const

inlinevirtual

Return the current parameters and the minimum and maximum allowed values for the parameters of this model.

Reimplemented in Pythia8::MultiRadial, Pythia8::MultiRadial, Pythia8::DoubleStrikman, and Pythia8::DoubleStrikman.

Definition at line 562 of file HIUserHooks.h.

virtual vector<double> Pythia8::SubCollisionModel::getParm ( ) const

inlinevirtual

Return the current parameters and the minimum and maximum allowed values for the parameters of this model.

Reimplemented in Pythia8::MultiRadial, Pythia8::MultiRadial, Pythia8::DoubleStrikman, and Pythia8::DoubleStrikman.