Implementation of the Alvarez-Ruso coherent pion production model. More...

#include <AlvarezRusoCOHPiPXSec.h>

Inheritance diagram for genie::AlvarezRusoCOHPiPXSec:

Collaboration diagram for genie::AlvarezRusoCOHPiPXSec:

Public Member Functions
	AlvarezRusoCOHPiPXSec ()

	AlvarezRusoCOHPiPXSec (string config)

virtual	~AlvarezRusoCOHPiPXSec ()

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 config)

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

alvarezruso::AlvarezRusoCOHPiPDXSec *	fMultidiff

const Interaction *	fLastInteraction

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)

static string	BuildParamMatKey (const std::string &comm_name, unsigned int i, unsigned int j)

static string	BuildParamMatRowSizeKey (const std::string &comm_name)

static string	BuildParamMatColSizeKey (const std::string &comm_name)

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 >
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

template<class T >
int	GetParamMat (const std::string &comm_name, TMatrixT< T > &mat, bool is_top_call=true) const
	Handle to load matrix of parameters. More...

template<class T >
int	GetParamMatSym (const std::string &comm_name, TMatrixTSym< T > &mat, bool is_top_call=true) const

int	GetParamMatKeys (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

Implementation of the Alvarez-Ruso coherent pion production model.

      Is a concrete implementation of the XSecAlgorithmI interface.

References:

Author: Steve Dennis University of Warwick, Rutherford Appleton Laboratory

Created:: October 5, 2012

License:: Copyright (c) 2003-2024, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Definition at line 33 of file AlvarezRusoCOHPiPXSec.h.

Constructor & Destructor Documentation

AlvarezRusoCOHPiPXSec::AlvarezRusoCOHPiPXSec ( )

Definition at line 41 of file AlvarezRusoCOHPiPXSec.cxx.

References fLastInteraction, and fMultidiff.

                                              :
 XSecAlgorithmI("genie::AlvarezRusoCOHPiPXSec")
 {
   fMultidiff = NULL;
   fLastInteraction = NULL;
 }

AlvarezRusoCOHPiPXSec::AlvarezRusoCOHPiPXSec ( string config )

Definition at line 48 of file AlvarezRusoCOHPiPXSec.cxx.

References fLastInteraction, and fMultidiff.

                                                           :
 XSecAlgorithmI("genie::AlvarezRusoCOHPiPXSec", config)
 {
   fMultidiff = NULL;
   fLastInteraction = NULL;
 }

AlvarezRusoCOHPiPXSec::~AlvarezRusoCOHPiPXSec ( )

virtual

Definition at line 55 of file AlvarezRusoCOHPiPXSec.cxx.

References fMultidiff.

 {
   if (fMultidiff) delete fMultidiff;
 }

Member Function Documentation

void AlvarezRusoCOHPiPXSec::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 156 of file AlvarezRusoCOHPiPXSec.cxx.

References genie::Algorithm::Configure(), and LoadConfig().

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

void AlvarezRusoCOHPiPXSec::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 162 of file AlvarezRusoCOHPiPXSec.cxx.

References genie::Algorithm::Configure(), and LoadConfig().

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

double AlvarezRusoCOHPiPXSec::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 131 of file AlvarezRusoCOHPiPXSec.cxx.

References fXSecIntegrator, and genie::XSecIntegratorI::Integrate().

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

void AlvarezRusoCOHPiPXSec::LoadConfig ( void )

private

Definition at line 168 of file AlvarezRusoCOHPiPXSec.cxx.

References fXSecIntegrator, and genie::Algorithm::SubAlg().

Referenced by Configure().

 {
   //AlgConfigPool * confp = AlgConfigPool::Instance();
   //const Registry * gc = confp->GlobalParameterList();
 
   /*fRo      = fConfig->GetDoubleDef("COH-Ro",            gc->GetDouble("COH-Ro"));
   fMa      = fConfig->GetDoubleDef("Ma",            gc->GetDouble("COH-Ma"));
   fa4      = fConfig->GetDoubleDef("a4",            gc->GetDouble("COHAR-a4"));
   fa5      = fConfig->GetDoubleDef("a5",            gc->GetDouble("COHAR-a5"));
   fb4      = fConfig->GetDoubleDef("b4",            gc->GetDouble("COHAR-b4"));
   fb5      = fConfig->GetDoubleDef("b5",            gc->GetDouble("COHAR-b5"));
   ffPi     = fConfig->GetDoubleDef("fPi",           gc->GetDouble("COHAR-fPi"));
   ffStar   = fConfig->GetDoubleDef("fStar",         gc->GetDouble("COHAR-fStar"));*/
 
 
   //-- load the differential cross section integrator
   fXSecIntegrator =
       dynamic_cast<const XSecIntegratorI *> (this->SubAlg("XSec-Integrator"));
   assert(fXSecIntegrator);
 
 }

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

virtual

Can this cross section algorithm handle the input process?

Implements genie::XSecAlgorithmI.

Definition at line 137 of file AlvarezRusoCOHPiPXSec.cxx.

References genie::Target::A(), genie::Target::HitNucIsSet(), genie::Interaction::InitState(), genie::pdg::IsAntiNeutrino(), genie::ProcessInfo::IsCoherentProduction(), genie::pdg::IsNeutrino(), genie::ProcessInfo::IsWeak(), genie::kISkipProcessChk, genie::InitialState::ProbePdg(), genie::Interaction::ProcInfo(), and genie::InitialState::Tgt().

Referenced by XSec().

 {
   if(interaction->TestBit(kISkipProcessChk)) return true;
 
   const InitialState & init_state = interaction->InitState();
   const ProcessInfo &  proc_info  = interaction->ProcInfo();
   const Target &       target     = init_state.Tgt();
 
   int nu = init_state.ProbePdg();
 
   if (!proc_info.IsCoherentProduction())  return false;
   if (!proc_info.IsWeak())      return false;
   if (target.HitNucIsSet())     return false;
   if (!(target.A()>1))          return false;
   if (!pdg::IsNeutrino(nu) && !pdg::IsAntiNeutrino(nu)) return false;
 
   return true;
 }

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

virtual

Compute the cross section for the input interaction.

Implements genie::XSecAlgorithmI.

Definition at line 60 of file AlvarezRusoCOHPiPXSec.cxx.

 {
   if(! this -> ValidProcess    (interaction) ) return 0.;
   if(! this -> ValidKinematics (interaction) ) return 0.;
 
   const Kinematics &   kinematics = interaction -> Kine();
   const InitialState & init_state = interaction -> InitState();
 
   int A       = init_state.Tgt().A(); // mass number
   int Z       = init_state.Tgt().Z(); // atomic number
   double E_nu = init_state.ProbeE(kRfLab); // neutrino energy
 
   const TLorentzVector p4_lep = kinematics.FSLeptonP4();
   const TLorentzVector p4_pi  = kinematics.HadSystP4();
   double E_lep = p4_lep.E();
 
   if (fLastInteraction!=interaction) {
     if (fMultidiff != NULL) {
       delete fMultidiff;
       fMultidiff = NULL;
     }
 
     current_t current;
     if ( interaction->ProcInfo().IsWeakCC() ) {
       current = kCC;
     }
     else if ( interaction->ProcInfo().IsWeakNC() ) {
       current = kNC;
     }
     else {
       LOG("AlvarezRusoCohPi",pDEBUG)<<"Unknown current for AlvarezRuso implementation";
       return 0.;
     }
 
     flavour_t flavour;
     if ( init_state.ProbePdg() == 12 || init_state.ProbePdg() == -12) {
       flavour=kE;
     }
     else if ( init_state.ProbePdg() == 14 || init_state.ProbePdg() == -14) {
       flavour=kMu;
     }
     else if ( init_state.ProbePdg() == 16 || init_state.ProbePdg() == -16) {
       flavour=kTau;
     }
     else {
       LOG("AlvarezRusoCohPi",pDEBUG)<<"Unknown probe for AlvarezRuso implementation";
       return 0.;
     }
 
     nutype_t nutype;
     if ( init_state.ProbePdg() > 0) {
       nutype = kNu;
     } else {
       nutype = kAntiNu;
     }
 
     fMultidiff = new AlvarezRusoCOHPiPDXSec(Z, A ,current, flavour, nutype);
     fLastInteraction = interaction;
   }
 
   double xsec = fMultidiff->DXSec(E_nu, E_lep, p4_lep.Theta(), p4_lep.Phi(), p4_pi.Theta(), p4_pi.Phi());
   xsec = xsec * 1E-38 * units::cm2;
 
   if (kps != kPSElOlOpifE) {
     xsec *= utils::kinematics::Jacobian(interaction, kPSElOlOpifE, kps );
   }
 
   return (xsec);
 }