genie::BBA05ELFormFactorsModel Class Reference

Concrete implementation of the ELFormFactorsModelI interface. Computes elastic form factors using the BBA2005 parameterization. More...

#include <BBA05ELFormFactorsModel.h>

Inheritance diagram for genie::BBA05ELFormFactorsModel:

Public Member Functions
	BBA05ELFormFactorsModel ()
	BBA05ELFormFactorsModel (string config)
virtual	~BBA05ELFormFactorsModel ()
double	Gep (const Interaction *interaction) const
	Compute the elastic form factor G_{ep} for the input interaction. More...
double	Gmp (const Interaction *interaction) const
	Compute the elastic form factor G_{mp} for the input interaction. More...
double	Gen (const Interaction *interaction) const
	Compute the elastic form factor G_{en} for the input interaction. More...
double	Gmn (const Interaction *interaction) const
	Compute the elastic form factor G_{mn} for the input interaction. More...
void	Configure (const Registry &config)
void	Configure (string param_set)
Public Member Functions inherited from genie::ELFormFactorsModelI
virtual	~ELFormFactorsModelI ()
Public Member Functions inherited from genie::Algorithm
virtual	~Algorithm ()
virtual void	FindConfig (void)
virtual const Registry &	GetConfig (void) const
Registry *	GetOwnedConfig (void)
virtual const AlgId &	Id (void) const
	Get algorithm ID. More...
virtual AlgStatus_t	GetStatus (void) const
	Get algorithm status. More...
virtual bool	AllowReconfig (void) const
virtual AlgCmp_t	Compare (const Algorithm *alg) const
	Compare with input algorithm. More...
virtual void	SetId (const AlgId &id)
	Set algorithm ID. More...
virtual void	SetId (string name, string config)
const Algorithm *	SubAlg (const RgKey &registry_key) const
void	AdoptConfig (void)
void	AdoptSubstructure (void)
virtual void	Print (ostream &stream) const
	Print algorithm info. More...

Private Member Functions
void	LoadConfig (void)
double	BBA05Fit (double tau, const BBA2005Fit_t &fp) const
double	tau (const Interaction *interaction) const

Private Attributes
BBA2005Fit_t	fGep
	BBA2005 fit coefficients for Gep. More...
BBA2005Fit_t	fGen
	BBA2005 fit coefficients for Gen. More...
BBA2005Fit_t	fGmp
	BBA2005 fit coefficients for Gmp. More...
BBA2005Fit_t	fGmn
	BBA2005 fit coefficients for Gmn. More...
double	fMuP
	Anomalous proton magnetic moment. More...
double	fMuN
	Anomalous neutron magnetic moment. More...

Additional Inherited Members
Static Public Member Functions inherited from genie::Algorithm
static string	BuildParamVectKey (const std::string &comm_name, unsigned int i)
static string	BuildParamVectSizeKey (const std::string &comm_name)
Protected Member Functions inherited from genie::ELFormFactorsModelI
	ELFormFactorsModelI ()
	ELFormFactorsModelI (string name)
	ELFormFactorsModelI (string name, string config)
Protected Member Functions inherited from genie::Algorithm
	Algorithm ()
	Algorithm (string name)
	Algorithm (string name, string config)
void	Initialize (void)
void	DeleteConfig (void)
void	DeleteSubstructure (void)
Registry *	ExtractLocalConfig (const Registry &in) const
Registry *	ExtractLowerConfig (const Registry &in, const string &alg_key) const
	Split an incoming configuration Registry into a block valid for the sub-algo identified by alg_key. More...
template<class T >
bool	GetParam (const RgKey &name, T &p, bool is_top_call=true) const
template<class T >
bool	GetParamDef (const RgKey &name, T &p, const T &def) const
template<class T >
int	GetParamVect (const std::string &comm_name, std::vector< T > &v, bool is_top_call=true) const
	Handle to load vectors of parameters. More...
int	GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const
int	AddTopRegistry (Registry *rp, bool owns=true)
	add registry with top priority, also update ownership More...
int	AddLowRegistry (Registry *rp, bool owns=true)
	add registry with lowest priority, also update ownership More...
int	MergeTopRegistry (const Registry &r)
int	AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
	Add registries with top priority, also udated Ownerships. More...
Protected Attributes inherited from genie::Algorithm
bool	fAllowReconfig
bool	fOwnsSubstruc
	true if it owns its substructure (sub-algs,...) More...
AlgId	fID
	algorithm name and configuration set More...
vector< Registry * >	fConfVect
vector< bool >	fOwnerships
	ownership for every registry in fConfVect More...
AlgStatus_t	fStatus
	algorithm execution status More...
AlgMap *	fOwnedSubAlgMp
	local pool for owned sub-algs (taken out of the factory pool) More...

Detailed Description

Concrete implementation of the ELFormFactorsModelI interface. Computes elastic form factors using the BBA2005 parameterization.

R.Bradford, A.Bodek, H.Budd and J.Arrington, hep-ex/0602017

Author

Costas Andreopoulos <constantinos.andreopoulos cern.ch> University of Liverpool & STFC Rutherford Appleton Laboratory

Oct 19, 2005

Copyright (c) 2003-2020, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Definition at line 34 of file BBA05ELFormFactorsModel.h.

Constructor & Destructor Documentation

BBA05ELFormFactorsModel::BBA05ELFormFactorsModel

(

)

Definition at line 18 of file BBA05ELFormFactorsModel.cxx.

                                                 :
ELFormFactorsModelI("genie::BBA05ELFormFactorsModel")
{

}

BBA05ELFormFactorsModel::BBA05ELFormFactorsModel

(

string

config

)

Definition at line 24 of file BBA05ELFormFactorsModel.cxx.

                                                              :
ELFormFactorsModelI("genie::BBA05ELFormFactorsModel", config)
{

}

BBA05ELFormFactorsModel::~BBA05ELFormFactorsModel ( )

virtual

Definition at line 30 of file BBA05ELFormFactorsModel.cxx.

{

}

Member Function Documentation

double BBA05ELFormFactorsModel::BBA05Fit ( double  tau, const BBA2005Fit_t &  fp  ) const

private

Definition at line 122 of file BBA05ELFormFactorsModel.cxx.

{
  double t2 = TMath::Power(t, 2);
  double t3 = TMath::Power(t, 3);
  double t4 = TMath::Power(t2,2);

  double Gn = (fp.a0) + (fp.a1*t) + (fp.a2*t2);
  double Gd = 1 + (fp.b1*t) + (fp.b2*t2) + (fp.b3*t3) + (fp.b4*t4);

  double G = Gn/Gd;
  return G;
}

void BBA05ELFormFactorsModel::Configure ( const Registry &  config )

virtual

Configure the algorithm with an external registry The registry is merged with the top level registry if it is owned, Otherwise a copy of it is added with the highest priority

Reimplemented from genie::Algorithm.

Definition at line 65 of file BBA05ELFormFactorsModel.cxx.

{
  Algorithm::Configure(config);
  this->LoadConfig();
}

void BBA05ELFormFactorsModel::Configure ( string  config )

virtual

Configure the algorithm from the AlgoConfigPool based on param_set string given in input An algorithm contains a vector of registries coming from different xml configuration files, which are loaded according a very precise prioriy This methods will load a number registries in order of priority: 1) "Tunable" parameter set from CommonParametes. This is loaded with the highest prioriry and it is designed to be used for tuning procedure Usage not expected from the user. 2) For every string defined in "CommonParame" the corresponding parameter set will be loaded from CommonParameter.xml 3) parameter set specified by the config string and defined in the xml file of the algorithm 4) if config is not "Default" also the Default parameter set from the same xml file will be loaded Effectively this avoids the repetion of a parameter when it is not changed in the requested configuration

Reimplemented from genie::Algorithm.

Definition at line 71 of file BBA05ELFormFactorsModel.cxx.

{
  Algorithm::Configure(config);
  this->LoadConfig();
}

double BBA05ELFormFactorsModel::Gen ( const Interaction *  interaction ) const

virtual

Compute the elastic form factor G_{en} for the input interaction.

Implements genie::ELFormFactorsModelI.

Definition at line 50 of file BBA05ELFormFactorsModel.cxx.

{
  double t   = this->tau(interaction);
  double gen = this->BBA05Fit(t,fGen);
  return gen;
}

double BBA05ELFormFactorsModel::Gep ( const Interaction *  interaction ) const

virtual

Compute the elastic form factor G_{ep} for the input interaction.

Implements genie::ELFormFactorsModelI.

Definition at line 35 of file BBA05ELFormFactorsModel.cxx.

{
  double t   = this->tau(interaction);
  double gep = this->BBA05Fit(t,fGep);
  return gep;
}

double BBA05ELFormFactorsModel::Gmn ( const Interaction *  interaction ) const

virtual

Compute the elastic form factor G_{mn} for the input interaction.

Implements genie::ELFormFactorsModelI.

Definition at line 57 of file BBA05ELFormFactorsModel.cxx.

{
  double t   = this->tau(interaction);
  double gmn = this->BBA05Fit(t,fGmn);
  gmn *= fMuN;
  return gmn;
}

double BBA05ELFormFactorsModel::Gmp ( const Interaction *  interaction ) const

virtual

Compute the elastic form factor G_{mp} for the input interaction.

Implements genie::ELFormFactorsModelI.

Definition at line 42 of file BBA05ELFormFactorsModel.cxx.

{
  double t   = this->tau(interaction);
  double gmp = this->BBA05Fit(t,fGmp);
  gmp *= fMuP;
  return gmp;
}

void BBA05ELFormFactorsModel::LoadConfig ( void  )

private

Definition at line 77 of file BBA05ELFormFactorsModel.cxx.

{
  //-- load the BBA2005 fit coefficients
  GetParam( "BBA05-Gep-a0", fGep.a0) ;
  GetParam( "BBA05-Gep-a1", fGep.a1) ;
  GetParam( "BBA05-Gep-a2", fGep.a2) ;

  GetParam( "BBA05-Gep-b1", fGep.b1 ) ;
  GetParam( "BBA05-Gep-b2", fGep.b2 ) ;
  GetParam( "BBA05-Gep-b3", fGep.b3 ) ;
  GetParam( "BBA05-Gep-b4", fGep.b4 ) ;

  GetParam( "BBA05-Gmp-a0", fGmp.a0 ) ;
  GetParam( "BBA05-Gmp-a1", fGmp.a1 ) ;
  GetParam( "BBA05-Gmp-a2", fGmp.a2 ) ;

  GetParam( "BBA05-Gmp-b1", fGmp.b1 ) ;
  GetParam( "BBA05-Gmp-b2", fGmp.b2 ) ;
  GetParam( "BBA05-Gmp-b3", fGmp.b3 ) ;
  GetParam( "BBA05-Gmp-b4", fGmp.b4 ) ;

  GetParam( "BBA05-Gen-a0", fGen.a0 ) ;
  GetParam( "BBA05-Gen-a1", fGen.a1 ) ;
  GetParam( "BBA05-Gen-a2", fGen.a2 ) ;

  GetParam( "BBA05-Gen-b1", fGen.b1 ) ;
  GetParam( "BBA05-Gen-b2", fGen.b2 ) ;
  GetParam( "BBA05-Gen-b3", fGen.b3 ) ;
  GetParam( "BBA05-Gen-b4", fGen.b4 ) ;

  GetParam( "BBA05-Gmn-a0", fGmn.a0 ) ;
  GetParam( "BBA05-Gmn-a1", fGmn.a1 ) ;
  GetParam( "BBA05-Gmn-a2", fGmn.a2 ) ;

  GetParam( "BBA05-Gmn-b1", fGmn.b1 ) ;
  GetParam( "BBA05-Gmn-b2", fGmn.b2 ) ;
  GetParam( "BBA05-Gmn-b3", fGmn.b3 ) ;
  GetParam( "BBA05-Gmn-b4", fGmn.b4 ) ;

  //-- anomalous magnetic moments
  GetParam( "AnomMagnMoment-P", fMuP ) ;
  GetParam( "AnomMagnMoment-N", fMuN ) ;

}

double BBA05ELFormFactorsModel::tau ( const Interaction *  interaction ) const

private

Definition at line 136 of file BBA05ELFormFactorsModel.cxx.

{
  const Kinematics & kine   = interaction->Kine();
  const Target &     target = interaction->InitState().Tgt();

  double q2 = kine.q2(); // momentum transfer, <0
  double M2 = TMath::Power(target.HitNucMass(),2); // Mnucl^2

  double t = -q2/(4*M2);
  return t;
}

Member Data Documentation

BBA2005Fit_t genie::BBA05ELFormFactorsModel::fGen

private

BBA2005 fit coefficients for Gen.

Definition at line 63 of file BBA05ELFormFactorsModel.h.

BBA2005Fit_t genie::BBA05ELFormFactorsModel::fGep

private

BBA2005 fit coefficients for Gep.

Definition at line 62 of file BBA05ELFormFactorsModel.h.

BBA2005Fit_t genie::BBA05ELFormFactorsModel::fGmn

private

BBA2005 fit coefficients for Gmn.

Definition at line 65 of file BBA05ELFormFactorsModel.h.

BBA2005Fit_t genie::BBA05ELFormFactorsModel::fGmp

private

BBA2005 fit coefficients for Gmp.

Definition at line 64 of file BBA05ELFormFactorsModel.h.

double genie::BBA05ELFormFactorsModel::fMuN

private

Anomalous neutron magnetic moment.

Definition at line 67 of file BBA05ELFormFactorsModel.h.

double genie::BBA05ELFormFactorsModel::fMuP

private

Anomalous proton magnetic moment.

Definition at line 66 of file BBA05ELFormFactorsModel.h.

---

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

• Generator/src/Physics/QuasiElastic/XSection/BBA05ELFormFactorsModel.h
• Generator/src/Physics/QuasiElastic/XSection/BBA05ELFormFactorsModel.cxx