Differential cross section for v+As coherent elastic scattering. Is a concrete implementation of the XSecAlgorithmI interface.
. More...

#include <COHElasticPXSec.h>

Inheritance diagram for genie::COHElasticPXSec:

Public Member Functions
	COHElasticPXSec ()

	COHElasticPXSec (string config)

virtual	~COHElasticPXSec ()

double	XSec (const Interaction *i, KinePhaseSpace_t k) const
	Compute the cross section for the input interaction. More...

double	Integral (const Interaction *i) const

bool	ValidProcess (const Interaction *i) const
	Can this cross section algorithm handle the input process? More...

void	Configure (const Registry &config)

void	Configure (string param_set)

Public Member Functions inherited from genie::XSecAlgorithmI
virtual	~XSecAlgorithmI ()

virtual bool	ValidKinematics (const Interaction *i) const
	Is the input kinematical point a physically allowed one? More...

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)

Private Attributes
const XSecIntegratorI *	fXSecIntegrator
	cross section integrator More...

double	fSin2thw
	sin^2(weinberg angle) More...

Additional Inherited Members
Protected Member Functions inherited from genie::XSecAlgorithmI
	XSecAlgorithmI ()

	XSecAlgorithmI (string name)

	XSecAlgorithmI (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 >
bool	GetParamVect (const std::string &comm_name, std::vector< T > &v, unsigned int max, 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

Differential cross section for v+As coherent elastic scattering. Is a concrete implementation of the XSecAlgorithmI interface.
.

Author

Definition at line 30 of file COHElasticPXSec.h.

Constructor & Destructor Documentation

COHElasticPXSec::COHElasticPXSec ( )

Definition at line 38 of file COHElasticPXSec.cxx.

                                  :
 XSecAlgorithmI("genie::COHElasticPXSec")
 {
 
 }

COHElasticPXSec::COHElasticPXSec ( string config )

Definition at line 44 of file COHElasticPXSec.cxx.

                                               :
 XSecAlgorithmI("genie::COHElasticPXSec", config)
 {
 
 }

COHElasticPXSec::~COHElasticPXSec ( )

virtual

Definition at line 50 of file COHElasticPXSec.cxx.

 {
 
 }

Member Function Documentation

void COHElasticPXSec::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 112 of file COHElasticPXSec.cxx.

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

void COHElasticPXSec::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 118 of file COHElasticPXSec.cxx.

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

double COHElasticPXSec::Integral ( const Interaction * i ) const

virtual

Integrate the model over the kinematic phase space available to the input interaction (kinematical cuts can be included)

Implements genie::XSecAlgorithmI.

Definition at line 92 of file COHElasticPXSec.cxx.

 {
   double xsec = fXSecIntegrator->Integrate(this,interaction);
   return xsec;
 }

void COHElasticPXSec::LoadConfig ( void )

private

Definition at line 124 of file COHElasticPXSec.cxx.

 {
   double thw ;
   GetParam( "WeinbergAngle", thw );
   fSin2thw = TMath::Power(TMath::Sin(thw), 2);
 
   fXSecIntegrator =
       dynamic_cast<const XSecIntegratorI *> (this->SubAlg("XSec-Integrator"));
   assert(fXSecIntegrator);
 }

bool COHElasticPXSec::ValidProcess ( const Interaction * i ) const

virtual

Can this cross section algorithm handle the input process?

Implements genie::XSecAlgorithmI.

Definition at line 98 of file COHElasticPXSec.cxx.

 {
   if(interaction->TestBit(kISkipProcessChk)) return true;
 
   const ProcessInfo & proc_info = interaction->ProcInfo();  
   if(!proc_info.IsCoherentElas()) return false;
 
   const InitialState & init_state = interaction->InitState();
   const Target & target = init_state.Tgt();
   if(!target.IsNucleus()) return false;
 
   return true;
 }

double COHElasticPXSec::XSec	(	const Interaction *	i,
		KinePhaseSpace_t	k
	)		const

virtual

Compute the cross section for the input interaction.

Implements genie::XSecAlgorithmI.

Definition at line 55 of file COHElasticPXSec.cxx.

 {
   if(! this -> ValidProcess    (interaction) ) return 0.;
   if(! this -> ValidKinematics (interaction) ) return 0.;
 
   const InitialState & init_state = interaction -> InitState();
   const Kinematics &   kinematics = interaction -> Kine();
   const Target &       target     = init_state.Tgt();
 
   if(!target.IsNucleus()) return 0;
 
   double E  = init_state.ProbeE(kRfLab);
   double Q2 = kinematics.Q2();
   int    Z  = target.Z(); 
   int    N  = target.N();
 
   // ...
   // ...
   // ...
 
   double xsec  = (0.25*kGF2/kPi2) * 
                  TMath::Power(N - (1-4*fSin2thw)*Z, 2) /* * ...  */;
 
   LOG("COHEl", pDEBUG)
     << "dXSec[vA,COHEl]/dQ2 (Ev = "<< E<< ", Q2 = "<< Q2 << ") = "<< xsec;
 
   //-- The algorithm computes dxsec/dQ2
   //   Check whether variable tranformation is needed
   if(kps!=kPSQ2fE) {
     double J = utils::kinematics::Jacobian(interaction,kPSQ2fE,kps);
     xsec *= J;
   }
 
   return xsec;
 }

Member Data Documentation

double genie::COHElasticPXSec::fSin2thw

private

sin^2(weinberg angle)

Definition at line 52 of file COHElasticPXSec.h.

const XSecIntegratorI* genie::COHElasticPXSec::fXSecIntegrator

private

cross section integrator

Definition at line 51 of file COHElasticPXSec.h.

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

Generator/src/Physics/Coherent/XSection/COHElasticPXSec.h
Generator/src/Physics/Coherent/XSection/COHElasticPXSec.cxx

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation