Generates resonance event (v+N->l+Resonance) kinematics. Is a concrete implementation of the EventRecordVisitorI interface. More...

#include <RESKinematicsGenerator.h>

Inheritance diagram for genie::RESKinematicsGenerator:

Public Member Functions
	RESKinematicsGenerator ()

	RESKinematicsGenerator (string config)

	~RESKinematicsGenerator ()

void	ProcessEventRecord (GHepRecord *event_rec) 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)

double	ComputeMaxXSec (const Interaction *interaction) const

Private Attributes
TF2 *	fEnvelope
	2-D envelope used for importance sampling More...

double	fWcut
	Wcut parameter in DIS/RES join scheme. 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::KineGeneratorWithCache
	KineGeneratorWithCache ()

	KineGeneratorWithCache (string name)

	KineGeneratorWithCache (string name, string config)

	~KineGeneratorWithCache ()

virtual double	MaxXSec (GHepRecord *evrec) const

virtual double	FindMaxXSec (const Interaction *in) const

virtual void	CacheMaxXSec (const Interaction *in, double xsec) const

virtual double	Energy (const Interaction *in) const

virtual CacheBranchFx *	AccessCacheBranch (const Interaction *in) const

virtual void	AssertXSecLimits (const Interaction *in, double xsec, double xsec_max) const

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

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::KineGeneratorWithCache
const XSecAlgorithmI *	fXSecModel

double	fSafetyFactor
	maxxsec -> maxxsec * safety_factor More...

double	fMaxXSecDiffTolerance
	max{100(xsec-maxxsec)/.5(xsec+maxxsec)} if xsec>maxxsec More...

double	fEMin
	min E for which maxxsec is cached - forcing explicit calc. More...

bool	fGenerateUniformly
	uniform over allowed phase space + event weight? 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

Generates resonance event (v+N->l+Resonance) kinematics. Is a concrete implementation of the EventRecordVisitorI interface.

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

November 18, 2004

Definition at line 29 of file RESKinematicsGenerator.h.

Constructor & Destructor Documentation

RESKinematicsGenerator::RESKinematicsGenerator ( )

Definition at line 38 of file RESKinematicsGenerator.cxx.

                                                :
 KineGeneratorWithCache("genie::RESKinematicsGenerator")
 {
   fEnvelope = 0;
 }

RESKinematicsGenerator::RESKinematicsGenerator ( string config )

Definition at line 44 of file RESKinematicsGenerator.cxx.

                                                             :
 KineGeneratorWithCache("genie::RESKinematicsGenerator", config)
 {
   fEnvelope = 0;
 }

RESKinematicsGenerator::~RESKinematicsGenerator ( )

Definition at line 50 of file RESKinematicsGenerator.cxx.

 {
   if(fEnvelope) delete fEnvelope;
 }

Member Function Documentation

double RESKinematicsGenerator::ComputeMaxXSec ( const Interaction * interaction ) const

privatevirtual

Implements genie::KineGeneratorWithCache.

Definition at line 313 of file RESKinematicsGenerator.cxx.

 {
 // Computes the maximum differential cross section in the requested phase
 // space. This method overloads KineGeneratorWithCache::ComputeMaxXSec
 // method and the value is cached at a circular cache branch for retrieval
 // during subsequent event generation.
 // The computed max differential cross section does not need to be the exact
 // maximum. The number used in the rejection method will be scaled up by a
 // safety factor. But this needs to be fast - do not use a very fine grid.
 
   double max_xsec = 0.;
 
   const InitialState & init_state = interaction -> InitState();
   double E = init_state.ProbeE(kRfHitNucRest);
   bool is_em = interaction->ProcInfo().IsEM();
   double Q2Thres = is_em ? utils::kinematics::electromagnetic::kMinQ2Limit : controls::kMinQ2Limit;
 
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
   LOG("RESKinematics", pDEBUG) << "Scanning phase space for E= " << E;
 #endif
   //bool scan1d = (E>1.0);
   bool scan1d = false;
 
   double md;
   if(!interaction->ExclTag().KnownResonance()) md=1.23;
   else {
      Resonance_t res = interaction->ExclTag().Resonance();
      md=res::Mass(res);
   }
 
   if(scan1d) {
     // ** 1-D Scan
     //
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
     LOG("RESKinematics", pDEBUG)
               << "Will search for max{xsec} along W(=MRes) = " << md;
 #endif
     // Set W around the value where d^2xsec/dWdQ^2 peaks
     interaction->KinePtr()->SetW(md);
 
     const KPhaseSpace & kps = interaction->PhaseSpace();
     Range1D_t rQ2 = kps.Q2Lim_W();
     if( rQ2.max < Q2Thres || rQ2.min <=0 ) return 0.;
 
     int    NQ2      = 25;
     int    NQ2b     = 5;
     double logQ2min = TMath::Log(rQ2.min+kASmallNum);
     double logQ2max = TMath::Log(rQ2.max-kASmallNum);
     double dlogQ2 = (logQ2max - logQ2min) /(NQ2-1);
 
     double xseclast   = -1;
     bool   increasing = true;
 
     for(int iq2=0; iq2<NQ2; iq2++) {
       double Q2 = TMath::Exp(logQ2min + iq2 * dlogQ2);
       interaction->KinePtr()->SetQ2(Q2);
       double xsec = fXSecModel->XSec(interaction, kPSWQ2fE);
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
       LOG("RESKinematics", pDEBUG)
                 << "xsec(W= " << md << ", Q2= " << Q2 << ") = " << xsec;
 #endif
       max_xsec = TMath::Max(xsec, max_xsec);
       increasing = xsec-xseclast>=0;
       xseclast=xsec;
 
       // once the cross section stops increasing, I reduce the step size and
       // step backwards a little bit to handle cases that the max cross section
       // is grossly underestimated (very peaky distribution & large step)
       if(!increasing) {
         dlogQ2/=NQ2b;
         for(int iq2b=0; iq2b<NQ2b; iq2b++) {
           Q2 = TMath::Exp(TMath::Log(Q2) - dlogQ2);
           if(Q2 < rQ2.min) continue;
           interaction->KinePtr()->SetQ2(Q2);
           xsec = fXSecModel->XSec(interaction, kPSWQ2fE);
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
           LOG("RESKinematics", pDEBUG)
                  << "xsec(W= " << md << ", Q2= " << Q2 << ") = " << xsec;
 #endif
           max_xsec = TMath::Max(xsec, max_xsec);
         }
         break;
       }
     } // Q2
 
   } else {
 
     // ** 2-D Scan
     //
     const KPhaseSpace & kps = interaction->PhaseSpace();
     Range1D_t rW = kps.WLim();
 
     int    NW   = 20;
     double Wmin = rW.min + kASmallNum;
     double Wmax = rW.max - kASmallNum;
 
     Wmax = TMath::Min(Wmax,fWcut);
 
     Wmin = TMath::Max(Wmin, md-.3);
     Wmax = TMath::Min(Wmax, md+.3);
 
     if(Wmax-Wmin<0.05) { NW=1; Wmin=Wmax; }
 
     double dW = (NW>1) ? (Wmax-Wmin)/(NW-1) : 0.;
 
     for(int iw=0; iw<NW; iw++) {
       double W = Wmin + iw*dW;
       interaction->KinePtr()->SetW(W);
 
       int NQ2  = 25;
       int NQ2b =  4;
 
       Range1D_t rQ2 = kps.Q2Lim_W();
       if( rQ2.max < Q2Thres || rQ2.min <=0 ) continue;
       if( rQ2.max-rQ2.min<0.02 ) {NQ2=5; NQ2b=3;}
 
       double logQ2min   = TMath::Log(rQ2.min+kASmallNum);
       double logQ2max   = TMath::Log(rQ2.max-kASmallNum);
       double dlogQ2     = (logQ2max - logQ2min) /(NQ2-1);
       double xseclast   = -1;
       bool   increasing = true;
 
       for(int iq2=0; iq2<NQ2; iq2++) {
         double Q2 = TMath::Exp(logQ2min + iq2 * dlogQ2);
         interaction->KinePtr()->SetQ2(Q2);
         double xsec = fXSecModel->XSec(interaction, kPSWQ2fE);
         LOG("RESKinematics", pDEBUG)
                 << "xsec(W= " << W << ", Q2= " << Q2 << ") = " << xsec;
         max_xsec = TMath::Max(xsec, max_xsec);
         increasing = xsec-xseclast>=0;
         xseclast=xsec;
 
         // once the cross section stops increasing, I reduce the step size and
         // step backwards a little bit to handle cases that the max cross section
         // is grossly underestimated (very peaky distribution & large step)
         if(!increasing) {
          dlogQ2/=NQ2b;
          for(int iq2b=0; iq2b<NQ2b; iq2b++) {
            Q2 = TMath::Exp(TMath::Log(Q2) - dlogQ2);
            if(Q2 < rQ2.min) continue;
            interaction->KinePtr()->SetQ2(Q2);
            xsec = fXSecModel->XSec(interaction, kPSWQ2fE);
            LOG("RESKinematics", pDEBUG)
                  << "xsec(W= " << W << ", Q2= " << Q2 << ") = " << xsec;
            max_xsec = TMath::Max(xsec, max_xsec);
          }
          break;
         }
       } // Q2
     }//W
   }//2d scan
 
   // Apply safety factor, since value retrieved from the cache might
   // correspond to a slightly different energy
   // Apply larger safety factor for smaller energies.
   max_xsec *= ( (E<md) ? 2. : fSafetyFactor);
 
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
   LOG("RESKinematics", pDEBUG) << interaction->AsString();
   LOG("RESKinematics", pDEBUG) << "Max xsec in phase space = " << max_xsec;
   LOG("RESKinematics", pDEBUG) << "Computed using " << fXSecModel->Id();
 #endif
 
   return max_xsec;
 }

void RESKinematicsGenerator::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 271 of file RESKinematicsGenerator.cxx.

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

void RESKinematicsGenerator::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 277 of file RESKinematicsGenerator.cxx.

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

void RESKinematicsGenerator::LoadConfig ( void )

private

Definition at line 283 of file RESKinematicsGenerator.cxx.

 {
   // Safety factor for the maximum differential cross section
   this->GetParamDef("MaxXSec-SafetyFactor", fSafetyFactor, 1.25);
 
   // Minimum energy for which max xsec would be cached, forcing explicit
   // calculation for lower eneries
   this->GetParamDef("Cache-MinEnergy", fEMin, 0.5);
 
   // Load Wcut used in DIS/RES join scheme
   this->GetParam("Wcut", fWcut);
 
   // Maximum allowed fractional cross section deviation from maxim cross
   // section used in rejection method
   this->GetParamDef("MaxXSec-DiffTolerance", fMaxXSecDiffTolerance, 999999.);
   assert(fMaxXSecDiffTolerance>=0);
 
   // Generate kinematics uniformly over allowed phase space and compute
   // an event weight?
   this->GetParamDef("UniformOverPhaseSpace", fGenerateUniformly, false);
 
   // Envelope employed when importance sampling is used
   // (initialize with dummy range)
   if(fEnvelope) delete fEnvelope;
   fEnvelope = new TF2("res-envelope",
         kinematics::RESImportanceSamplingEnvelope,0.01,1,0.01,1,4);
   // stop ROOT from deleting this object of its own volition
   gROOT->GetListOfFunctions()->Remove(fEnvelope);
 }

void RESKinematicsGenerator::ProcessEventRecord ( GHepRecord * event_rec ) const

virtual

Implements genie::EventRecordVisitorI.

Definition at line 55 of file RESKinematicsGenerator.cxx.

 {
   if(fGenerateUniformly) {
     LOG("RESKinematics", pNOTICE)
           << "Generating kinematics uniformly over the allowed phase space";
   }
 
   //-- Get the random number generators
   RandomGen * rnd = RandomGen::Instance();
 
   //-- Access cross section algorithm for running thread
   RunningThreadInfo * rtinfo = RunningThreadInfo::Instance();
   const EventGeneratorI * evg = rtinfo->RunningThread();
   fXSecModel = evg->CrossSectionAlg();
 
   //-- Get the interaction from the GHEP record
   Interaction * interaction = evrec->Summary();
   interaction->SetBit(kISkipProcessChk);
 
   //-- EM or CC/NC process (different importance sampling methods)
   bool is_em = interaction->ProcInfo().IsEM();
 
   //-- Compute the W limits
   //  (the physically allowed W's, unless an external cut is imposed)
   const KPhaseSpace & kps = interaction->PhaseSpace();
   Range1D_t W = kps.Limits(kKVW);
   //costas says this is bad  if(W.max>1.7) W.max=1.7;
 //assert(W.min>=0. && W.min<W.max);
 
   if(W.max <=0 || W.min>=W.max) {
      LOG("RESKinematics", pWARN) << "No available phase space";
      evrec->EventFlags()->SetBitNumber(kKineGenErr, true);
      genie::exceptions::EVGThreadException exception;
      exception.SetReason("No available phase space");
      exception.SwitchOnFastForward();
      throw exception;
   }
 
   const InitialState & init_state = interaction -> InitState();
   double E = init_state.ProbeE(kRfHitNucRest);
   //  double M = init_state.Tgt().HitNucP4().M();
   //  double ml  = interaction->FSPrimLepton()->Mass();
 
   //-- For the subsequent kinematic selection with the rejection method:
   //   Calculate the max differential cross section or retrieve it from the
   //   cache. Throw an exception and quit the evg thread if a non-positive
   //   value is found.
   //   If the kinematics are generated uniformly over the allowed phase
   //   space the max xsec is irrelevant
   double xsec_max = (fGenerateUniformly) ? -1 : this->MaxXSec(evrec);
 
   //-- Try to select a valid W, Q2 pair using the rejection method
   double dW   = W.max - W.min;
   double xsec = -1;
 
   unsigned int iter = 0;
   bool accept = false;
   while(1) {
      iter++;
      if(iter > kRjMaxIterations) {
          LOG("RESKinematics", pWARN)
               << "*** Could not select a valid (W,Q^2) pair after "
                                                     << iter << " iterations";
          evrec->EventFlags()->SetBitNumber(kKineGenErr, true);
          genie::exceptions::EVGThreadException exception;
          exception.SetReason("Couldn't select kinematics");
          exception.SwitchOnFastForward();
          throw exception;
      }
 
      double gW   = 0; // current hadronic invariant mass
      double gQ2  = 0; // current momentum transfer
      double gQD2 = 0; // tranformed Q2 to take out dipole form
 
      if(fGenerateUniformly) {
        //-- Generate a W uniformly in the kinematically allowed range.
        //   For the generated W, compute the Q2 range and generate a value
        //   uniformly over that range
        gW  = W.min + dW  * rnd->RndKine().Rndm();
        Range1D_t Q2 = kps.Q2Lim_W();
        if(Q2.max<=0. || Q2.min>=Q2.max) continue;
        gQ2 = Q2.min + (Q2.max-Q2.min) * rnd->RndKine().Rndm();
 
        interaction->SetBit(kISkipKinematicChk);
 
      } else {
 
 
        // > neutrino scattering
        // Selecting unweighted event kinematics using an importance sampling
        // method. Q2 with be transformed to QD2 to take out the dipole form.
        // An importance sampling envelope will be constructed for W.
          // first pass, configure the sampling envelope
          if(iter==1) {
             LOG("RESKinematics", pINFO) << "Initializing the sampling envelope";
             if(!fEnvelope) {
                LOG("RESKinematics", pFATAL) << "Null sampling envelope!";
                exit(1);
             }
             interaction->KinePtr()->SetW(W.min);
             Range1D_t Q2 = kps.Q2Lim_W();
             double Q2min  = -99.;
             if (is_em) { Q2min  = Q2.min + kASmallNum; }
             else { Q2min  = 0 + kASmallNum; }
             double Q2max  = Q2.max - kASmallNum;
 
             // In unweighted mode - use transform that takes out the dipole form
             double QD2min = utils::kinematics::Q2toQD2(Q2max);
             double QD2max = utils::kinematics::Q2toQD2(Q2min);
 
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
             LOG("RESKinematics", pDEBUG)
                 <<  "Q^2: [" << Q2min  << ", " << Q2max  << "] => "
                 << "QD^2: [" << QD2min << ", " << QD2max << "]";
 #endif
             double mR, gR;
             if(!interaction->ExclTag().KnownResonance()) {
                mR = 1.2;
                gR = 0.6;
             } else {
                Resonance_t res = interaction->ExclTag().Resonance();
                mR = res::Mass(res);
                gR = (E>mR) ? 0.220 : 0.400;
             }
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
             LOG("RESKinematics", pDEBUG)
                <<  "(m,g) = (" << mR << ", " << gR
                << "), max(xsec,W) = (" << xsec_max << ", " << W.max << ")";
 #endif
             fEnvelope->SetRange(QD2min,W.min,QD2max,W.max); // range
             fEnvelope->SetParameter(0,  mR);                // resonance mass
             fEnvelope->SetParameter(1,  gR);                // resonance width
             fEnvelope->SetParameter(2,  xsec_max);          // max differential xsec
             fEnvelope->SetParameter(3,  W.max);             // kinematically allowed Wmax
          }// first pass
 
          // Generate W,QD2 using the 2-D envelope as PDF
          fEnvelope->GetRandom2(gQD2,gW);
 
          // QD2 -> Q2
          gQ2 = utils::kinematics::QD2toQ2(gQD2);
      } // uniformly over phase space?
 
      LOG("RESKinematics", pINFO) << "Trying: W = " << gW << ", Q2 = " << gQ2;
 
      //-- Set kinematics for current trial
      interaction->KinePtr()->SetW(gW);
      interaction->KinePtr()->SetQ2(gQ2);
 
      //-- Computing cross section for the current kinematics
      xsec = fXSecModel->XSec(interaction, kPSWQ2fE);
 
      //-- Decide whether to accept the current kinematics
      if(!fGenerateUniformly) {
 
           // unified neutrino / electron scattering
           double max = fEnvelope->Eval(gQD2, gW);
           double t   = max * rnd->RndKine().Rndm();
           double J   = kinematics::Jacobian(interaction,kPSWQ2fE,kPSWQD2fE);
 
           this->AssertXSecLimits(interaction, xsec, max);
 
 #ifdef __GENIE_LOW_LEVEL_MESG_ENABLED__
           LOG("RESKinematics", pDEBUG)
                      << "xsec= " << xsec << ", J= " << J << ", Rnd= " << t;
 #endif
           accept = (t < J*xsec);
         } // charged lepton or neutrino scattering?
      else {
         accept = (xsec>0);
      } // uniformly over phase space
 
      //-- If the generated kinematics are accepted, finish-up module's job
      if(accept) {
         LOG("RESKinematics", pINFO)
                             << "Selected: W = " << gW << ", Q2 = " << gQ2;
         // reset 'trust' bits
         interaction->ResetBit(kISkipProcessChk);
         interaction->ResetBit(kISkipKinematicChk);
 
         // compute x,y for selected W,Q2
         // note: hit nucleon can be off the mass-shell
         double gx=-1, gy=-1;
         double M = init_state.Tgt().HitNucP4().M();
         //double M = init_state.Tgt().HitNucMass();
         kinematics::WQ2toXY(E,M,gW,gQ2,gx,gy);
 
         // set the cross section for the selected kinematics
         evrec->SetDiffXSec(xsec,kPSWQ2fE);
 
         // for uniform kinematics, compute an event weight as
         // wght = (phase space volume)*(differential xsec)/(event total xsec)
         if(fGenerateUniformly) {
           double vol     = kinematics::PhaseSpaceVolume(interaction,kPSWQ2fE);
           double totxsec = evrec->XSec();
           double wght    = (vol/totxsec)*xsec;
           LOG("RESKinematics", pNOTICE)  << "Kinematics wght = "<< wght;
 
           // apply computed weight to the current event weight
           wght *= evrec->Weight();
           LOG("RESKinematics", pNOTICE) << "Current event wght = " << wght;
           evrec->SetWeight(wght);
         }
 
         // lock selected kinematics & clear running values
         interaction->KinePtr()->SetQ2(gQ2, true);
         interaction->KinePtr()->SetW (gW,  true);
         interaction->KinePtr()->Setx (gx,  true);
         interaction->KinePtr()->Sety (gy,  true);
         interaction->KinePtr()->ClearRunningValues();
 
         return;
      } // accept
   } // iterations
 }

Member Data Documentation

TF2* genie::RESKinematicsGenerator::fEnvelope

mutableprivate

2-D envelope used for importance sampling

Definition at line 48 of file RESKinematicsGenerator.h.

double genie::RESKinematicsGenerator::fWcut

private

Wcut parameter in DIS/RES join scheme.

Definition at line 49 of file RESKinematicsGenerator.h.

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

Generator/src/Physics/Resonance/EventGen/RESKinematicsGenerator.h
Generator/src/Physics/Resonance/EventGen/RESKinematicsGenerator.cxx

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