Generates the 'final state' hadronic system in v RES interactions. It adds the remnant nucleus (if any), the pre-selected resonance and the resonance decay products at the GHEP record. Unlike the SPP thread, in the RES thread the resonance is specified at the time an interaction is selected but its decay products not (semi-inclusive resonance reactions). The off the mass-shell baryon resonance is decayed using a phase space generator. All kinematically available decay channels are being used (not just 1 pi channels). Is a concrete implementation of the EventRecordVisitorI interface. More...

#include <RESHadronicSystemGenerator.h>

Inheritance diagram for genie::RESHadronicSystemGenerator:

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Collaboration diagram for genie::RESHadronicSystemGenerator:

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Public Member Functions
	RESHadronicSystemGenerator ()
	RESHadronicSystemGenerator (string config)
	~RESHadronicSystemGenerator ()
void	ProcessEventRecord (GHepRecord *event_rec) const
void	Configure (const Registry &config)
void	Configure (string config)
Public Member Functions inherited from genie::HadronicSystemGenerator
void	AddTargetNucleusRemnant (GHepRecord *event_rec) const
void	AddFinalHadronicSyst (GHepRecord *event_rec) const
void	PreHadronTransportDecays (GHepRecord *event_rec) const
TLorentzVector	Hadronic4pLAB (GHepRecord *event_rec) const
TLorentzVector	MomentumTransferLAB (GHepRecord *event_rec) const
TVector3	HCM2LAB (GHepRecord *event_rec) const
int	HadronShowerCharge (GHepRecord *event_rec) const
int	ResonanceCharge (GHepRecord *event_rec) const
Public Member Functions inherited from genie::EventRecordVisitorI
virtual	~EventRecordVisitorI ()
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.
virtual AlgStatus_t	GetStatus (void) const
	Get algorithm status.
virtual bool	AllowReconfig (void) const
virtual AlgCmp_t	Compare (const Algorithm *alg) const
	Compare with input algorithm.
virtual void	SetId (const AlgId &id)
	Set algorithm ID.
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.

Private Member Functions
void	LoadConfig (void)
int	GetResonancePdgCode (GHepRecord *evrec) const
void	AddResonance (GHepRecord *evrec, int pdgc) const

Private Attributes
const EventRecordVisitorI *	fResonanceDecayer

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::HadronicSystemGenerator
	HadronicSystemGenerator ()
	HadronicSystemGenerator (string name)
	HadronicSystemGenerator (string name, string config)
	~HadronicSystemGenerator ()
Protected Member Functions inherited from genie::EventRecordVisitorI
	EventRecordVisitorI ()
	EventRecordVisitorI (string name)
	EventRecordVisitorI (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.
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.
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.
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
int	AddLowRegistry (Registry *rp, bool owns=true)
	add registry with lowest priority, also update ownership
int	MergeTopRegistry (const Registry &r)
int	AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
	Add registries with top priority, also udated Ownerships.
Protected Attributes inherited from genie::HadronicSystemGenerator
const EventRecordVisitorI *	fPreINukeDecayer
Protected Attributes inherited from genie::Algorithm
bool	fAllowReconfig
bool	fOwnsSubstruc
	true if it owns its substructure (sub-algs,...)
AlgId	fID
	algorithm name and configuration set
vector< Registry * >	fConfVect
vector< bool >	fOwnerships
	ownership for every registry in fConfVect
AlgStatus_t	fStatus
	algorithm execution status
AlgMap *	fOwnedSubAlgMp
	local pool for owned sub-algs (taken out of the factory pool)

Detailed Description

Generates the 'final state' hadronic system in v RES interactions. It adds the remnant nucleus (if any), the pre-selected resonance and the resonance decay products at the GHEP record. Unlike the SPP thread, in the RES thread the resonance is specified at the time an interaction is selected but its decay products not (semi-inclusive resonance reactions). The off the mass-shell baryon resonance is decayed using a phase space generator. All kinematically available decay channels are being used (not just 1 pi channels). Is a concrete implementation of the EventRecordVisitorI interface.

Author: Costas Andreopoulos <c.andreopoulos \at cern.ch> University of Liverpool

Created:\n November 23, 2004

License:\n Copyright (c) 2003-2025, The GENIE Collaboration: For the full text of the license visit http://copyright.genie-mc.org

Definition at line 35 of file RESHadronicSystemGenerator.h.

Constructor & Destructor Documentation

◆ RESHadronicSystemGenerator() [1/2]

RESHadronicSystemGenerator::RESHadronicSystemGenerator ( )

Definition at line 41 of file RESHadronicSystemGenerator.cxx.

                                                       :
HadronicSystemGenerator("genie::RESHadronicSystemGenerator")
{
 
}

References genie::HadronicSystemGenerator::HadronicSystemGenerator().

◆ RESHadronicSystemGenerator() [2/2]

RESHadronicSystemGenerator::RESHadronicSystemGenerator ( string config )

Definition at line 47 of file RESHadronicSystemGenerator.cxx.

                                                                   :
HadronicSystemGenerator("genie::RESHadronicSystemGenerator", config)
{
 
}

References genie::HadronicSystemGenerator::HadronicSystemGenerator().

◆ ~RESHadronicSystemGenerator()

RESHadronicSystemGenerator::~RESHadronicSystemGenerator ( )

Definition at line 53 of file RESHadronicSystemGenerator.cxx.

{
 
}

Member Function Documentation

◆ AddResonance()

void RESHadronicSystemGenerator::AddResonance	(	GHepRecord *	evrec,
		int	pdgc ) const

private

Definition at line 106 of file RESHadronicSystemGenerator.cxx.

{
  //-- Compute RES p4 = p4(neutrino) + p4(hit nucleon) - p4(primary lepton)
  TLorentzVector p4 = this->Hadronic4pLAB(evrec);
 
  //-- Add the resonance at the EventRecord
  GHepStatus_t ist = kIStPreDecayResonantState;
  int mom = evrec->HitNucleonPosition();
 
  //-- Get vtx position
  GHepParticle * neutrino  = evrec->Probe();
  const TLorentzVector & vtx = *(neutrino->X4());
 
  evrec->AddParticle(pdgc, ist, mom,-1,-1,-1, p4, vtx);
}

References genie::GHepRecord::AddParticle(), genie::HadronicSystemGenerator::Hadronic4pLAB(), genie::GHepRecord::HitNucleonPosition(), genie::kIStPreDecayResonantState, genie::GHepRecord::Probe(), and genie::GHepParticle::X4().

Referenced by ProcessEventRecord().

◆ Configure() [1/2]

void RESHadronicSystemGenerator::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 207 of file RESHadronicSystemGenerator.cxx.

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

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

◆ Configure() [2/2]

void RESHadronicSystemGenerator::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 213 of file RESHadronicSystemGenerator.cxx.

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

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

◆ GetResonancePdgCode()

int RESHadronicSystemGenerator::GetResonancePdgCode ( GHepRecord * evrec ) const

private

Definition at line 82 of file RESHadronicSystemGenerator.cxx.

{
// In the RES thread the resonance is specifed when selecting interaction
// This method adds it to the GHEP record.
 
  Interaction * interaction = evrec->Summary();
 
  // Get resonance id
  const XclsTag & xcls = interaction->ExclTag();
  assert(xcls.KnownResonance());
  Resonance_t res = xcls.Resonance();
 
  // Get resonance charge
  int q_res = this->ResonanceCharge(evrec);
 
  // Find resonance PDG code from resonance charge and id
  int pdgc = utils::res::PdgCode(res, q_res);
 
  LOG("RESHadronicVtx", pNOTICE)
     << "Selected event has RES with PDGC = " << pdgc << ", Q = " << q_res;
 
  return pdgc;
}

References genie::Interaction::ExclTag(), genie::XclsTag::KnownResonance(), LOG, genie::utils::res::PdgCode(), pNOTICE, genie::XclsTag::Resonance(), genie::HadronicSystemGenerator::ResonanceCharge(), and genie::GHepRecord::Summary().

Referenced by ProcessEventRecord().

◆ LoadConfig()

void RESHadronicSystemGenerator::LoadConfig ( void )

private

Definition at line 219 of file RESHadronicSystemGenerator.cxx.

{
  fResonanceDecayer = 0;
  //fPreINukeDecayer  = 0;
 
  // Get the specified decayers
  fResonanceDecayer =
      dynamic_cast<const EventRecordVisitorI *> (this->SubAlg("Decayer"));
  assert(fResonanceDecayer);
  // fPreINukeDecayer =
  //    dynamic_cast<const EventRecordVisitorI *> (this->SubAlg("PreTransportDecayer"));
  // assert(fPreINukeDecayer);
}

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

Referenced by Configure(), and Configure().

◆ ProcessEventRecord()

void RESHadronicSystemGenerator::ProcessEventRecord ( GHepRecord * event_rec ) const

virtual

Implements genie::EventRecordVisitorI.

Definition at line 58 of file RESHadronicSystemGenerator.cxx.

{
// This method generates the final state hadronic system
 
  // Get the right resonance PDG code so that the selected resonance
  // conserves charge
  int pdgc = GetResonancePdgCode(evrec);
 
  // Add the selected resonance
  this->AddResonance(evrec,pdgc);
 
  // Decay the resonance (and its decay products, if they include resonances)
  fResonanceDecayer->ProcessEventRecord(evrec);
 
  // Add the baryon resonance decay products at the event record
  //this->AddResonanceDecayProducts(evrec,pdgc);
 
  // Handle resonance decay channels to other resonances or short-living
  //   partices
  //LOG("RESHadronicVtx", pNOTICE)
  //   << "Decay any resonance in  the initial resonance decay products";
  //this->PreHadronTransportDecays(evrec);
}

References AddResonance(), fResonanceDecayer, and GetResonancePdgCode().

Member Data Documentation

◆ fResonanceDecayer

const EventRecordVisitorI* genie::RESHadronicSystemGenerator::fResonanceDecayer

private

Definition at line 57 of file RESHadronicSystemGenerator.h.

Referenced by LoadConfig(), and ProcessEventRecord().

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

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RESHadronicSystemGenerator() [1/2]

◆ RESHadronicSystemGenerator() [2/2]

◆ ~RESHadronicSystemGenerator()

Member Function Documentation

◆ AddResonance()

◆ Configure() [1/2]

◆ Configure() [2/2]

◆ GetResonancePdgCode()

◆ LoadConfig()

◆ ProcessEventRecord()

Member Data Documentation

◆ fResonanceDecayer