genie::HENuElGenerator Class Reference

Generator for high energy neutrino-electron scattering. More...

#include <HENuElGenerator.h>

Inheritance diagram for genie::HENuElGenerator:

Collaboration diagram for genie::HENuElGenerator:

Public Member Functions
	HENuElGenerator ()
	HENuElGenerator (string config)
	~HENuElGenerator ()
void	ProcessEventRecord (GHepRecord *event) const
void	Configure (const Registry &config)
void	Configure (string config)
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. 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
Born *	born

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::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. 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

Generator for high energy neutrino-electron scattering.

Author

Alfonso Garcia <aagarciasoto km3net.de> IFIC & Harvard University

Created:

Dec 8, 2021

License:

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

Definition at line 29 of file HENuElGenerator.h.

Constructor & Destructor Documentation

HENuElGenerator::HENuElGenerator

(

)

Definition at line 44 of file HENuElGenerator.cxx.

References born.

                                 :
EventRecordVisitorI("genie::HENuElGenerator")
{
  born = new Born();
}

HENuElGenerator::HENuElGenerator

(

string

config

)

Definition at line 50 of file HENuElGenerator.cxx.

                                              :
EventRecordVisitorI("genie::HENuElGenerator", config)
{

}

HENuElGenerator::~HENuElGenerator

(

)

Definition at line 56 of file HENuElGenerator.cxx.

{

}

Member Function Documentation

void HENuElGenerator::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 135 of file HENuElGenerator.cxx.

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

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

void HENuElGenerator::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 141 of file HENuElGenerator.cxx.

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

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

void HENuElGenerator::LoadConfig ( void  )

private

Definition at line 147 of file HENuElGenerator.cxx.

Referenced by Configure().

{


}

void HENuElGenerator::ProcessEventRecord ( GHepRecord *  event ) const

virtual

Implements genie::EventRecordVisitorI.

Definition at line 61 of file HENuElGenerator.cxx.

References genie::utils::math::LongLorentzVector::BoostZ(), born, genie::utils::math::LongLorentzVector::E(), genie::Interaction::FSPrimLepton(), genie::Interaction::FSPrimLeptonPdg(), genie::Kinematics::GetKV(), genie::Born::GetReAlpha(), genie::Born::GetS(), genie::Born::GetT(), genie::Interaction::InitState(), genie::RandomGen::Instance(), genie::ProcessInfo::IsWeakCC(), genie::constants::kElectronMass, genie::Interaction::Kine(), genie::kIStFinalStateNuclearRemnant, genie::kIStStableFinalState, genie::kKVn1, genie::kKVn2, genie::kPdgNuE, genie::constants::kPi, genie::kRfLab, genie::GHepParticle::P4(), genie::GHepParticle::Pdg(), genie::InitialState::ProbeE(), genie::Interaction::ProcInfo(), genie::utils::math::LongLorentzVector::Px(), genie::utils::math::LongLorentzVector::Py(), genie::utils::math::LongLorentzVector::Pz(), genie::units::s, and genie::GHepParticle::X4().

{

  Interaction * interaction = event->Summary();
  const InitialState & init_state = interaction->InitState();
  const ProcessInfo &  proc_info  = interaction->ProcInfo();

  //incoming v & struck particle & remnant nucleus
  GHepParticle * nu = event->Probe();

  GHepParticle * target = event -> TargetNucleus();
  if(target) event->AddParticle(target->Pdg(), kIStFinalStateNuclearRemnant, 1,-1,-1,-1, *(target->P4()), *(target->X4()) );

  TVector3 unit_nu = nu->P4()->Vect().Unit();

  bool isCC = proc_info.IsWeakCC();

  long double mlout = interaction->FSPrimLepton()->Mass(); //mass of charged lepton
  long double mlin  = kElectronMass;                       //mass of incoming charged lepton

  long double Enuin = init_state.ProbeE(kRfLab);
  long double s = born->GetS(mlin,Enuin);

  long double n1 = interaction->Kine().GetKV(kKVn1);
  long double n2 = interaction->Kine().GetKV(kKVn2);

  long double costhCM = n1;
  long double sinthCM = sqrtl(1-costhCM*costhCM);
  
  long double t  = born->GetT( mlin, mlout, s, n1 );
  long double zeta  = born->GetReAlpha()/kPi*(2.0*logl(sqrtl(-t)/kElectronMass)-1.0);
  long double omx   = powl(n2, 1.0/zeta );
  long double s_r = s*( 1.-omx );

  // Boost velocity CM -> LAB
  long double EnuinCM = (s_r-mlin*mlin)/sqrtl(s_r)/2.;
  long double beta = (powl(Enuin,2)-powl(EnuinCM,2))/(powl(Enuin,2)+powl(EnuinCM,2));

  // Final state primary lepton PDG code
  int pdgl = interaction->FSPrimLeptonPdg();
  assert(pdgl!=0);

  long double ElpoutCM = (s_r+mlout*mlout)/sqrtl(s_r)/2.;
  long double EnuoutCM = (s_r-mlout*mlout)/sqrtl(s_r)/2.;
  LongLorentzVector p4_lpout( 0.,  EnuoutCM*sinthCM,  EnuoutCM*costhCM, ElpoutCM );
  LongLorentzVector p4_nuout( 0., -EnuoutCM*sinthCM, -EnuoutCM*costhCM, EnuoutCM );

  p4_lpout.BoostZ(beta);
  p4_nuout.BoostZ(beta);

  TLorentzVector p4lp_o( (double)p4_lpout.Px(), (double)p4_lpout.Py(), (double)p4_lpout.Pz(), (double)p4_lpout.E() );
  TLorentzVector p4nu_o( (double)p4_nuout.Px(), (double)p4_nuout.Py(), (double)p4_nuout.Pz(), (double)p4_nuout.E() );

  // Randomize transverse components
  RandomGen * rnd = RandomGen::Instance();
  double phi  = 2* kPi * rnd->RndLep().Rndm();
  p4lp_o.RotateZ(phi);
  p4nu_o.RotateZ(phi);

  //rotate from LAB=[0,0,Ev,Ev]->[px,py,pz,E]
  p4lp_o.RotateUz(unit_nu);
  p4nu_o.RotateUz(unit_nu);

  int pdgvout = 0;
  if (isCC) pdgvout = kPdgNuE;
  else      pdgvout = nu->Pdg();

  // Create a GHepParticle and add it to the event record
  event->AddParticle( pdgl,     kIStStableFinalState, 4, -1, -1, -1, p4lp_o,              *(nu->X4()) );
  event->AddParticle( pdgvout,  kIStStableFinalState, 4, -1, -1, -1, p4nu_o,              *(nu->X4()) );
  event->Summary()->KinePtr()->SetFSLeptonP4(p4lp_o);

}

Member Data Documentation

Born* genie::HENuElGenerator::born

private

Definition at line 48 of file HENuElGenerator.h.

Referenced by HENuElGenerator(), and ProcessEventRecord().

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

• HENuElGenerator.h
• HENuElGenerator.cxx