Py8CharmDecayerPhysics Class Reference

#include "Py8CharmDecayerPhysics.hh"

Inheritance diagram for Py8CharmDecayerPhysics:

Public Member Functions
	Py8CharmDecayerPhysics (G4int verb=1)
virtual	~Py8CharmDecayerPhysics ()

Protected Member Functions
virtual void	ConstructParticle ()
virtual void	ConstructProcess ()

Detailed Description

Definition at line 41 of file Py8CharmDecayerPhysics.hh.

Constructor & Destructor Documentation

Py8CharmDecayerPhysics::Py8CharmDecayerPhysics

(

G4int

verb = 1

)

Definition at line 52 of file Py8CharmDecayerPhysics.cc.

  : G4VPhysicsConstructor("Py8CharmDecayerPhysics")
{
}

Py8CharmDecayerPhysics::~Py8CharmDecayerPhysics ( )

virtual

Definition at line 59 of file Py8CharmDecayerPhysics.cc.

{
}

Member Function Documentation

void Py8CharmDecayerPhysics::ConstructParticle ( )

protectedvirtual

Definition at line 65 of file Py8CharmDecayerPhysics.cc.

{
   // Nothing needs to be done here
}

void Py8CharmDecayerPhysics::ConstructProcess ( )

protectedvirtual

Definition at line 72 of file Py8CharmDecayerPhysics.cc.

References util::abs().

{

   // Loop over all particles instantiated and add external decayer
   // to all decay processes where there's no decay table, plus tau's

   // Create external decayer for G4Decay process
   // NOTE: The extDecayer will be deleted in G4Decay destructor
   Py8Decayer* extDecayer = new Py8Decayer();

   auto particleIterator=GetParticleIterator();
   particleIterator->reset();
   while ((*particleIterator)())
   {
      G4ParticleDefinition* particle = particleIterator->value();
      G4ProcessManager* pmanager = particle->GetProcessManager();
/*
      if ( verboseLevel > 1 ) {
         G4cout << "Setting ext decayer for: "
                <<  particleIterator->value()->GetParticleName()
                << G4endl;
      }
*/
      G4ProcessVector* processVector = pmanager->GetProcessList();
      for ( size_t i=0; i<processVector->length(); ++i )
      {
         G4Decay* decay = dynamic_cast<G4Decay*>((*processVector)[i]);
         if ( decay )
         {
            // remove native/existing decay table for
            // a) charm hadrons
            // b) B hadrons
            // and replace with external decayer
            // for taus:  if ( std::abs(particle->GetPDGEncoding()) == 15 )
#ifdef EXPLICIT_CHARM_LIST
            std::set<int> abspdglist = {   411,   421, 10411, 10421,   413,
                                           423, 10413, 10423, 20413, 20423,
                                           415,   425,   431, 10431,   433,
                                         10433, 20433,   435,   441, 10441,
                                        100441,   443, 10443, 20443,100443,
                                         30443,   445,
            };
            int abspdg = abs(particle->GetPDGEncoding());
            if ( abspdglist.find(abspdg) != abspdglist.end() )
#else
            int abspdg = abs(particle->GetPDGEncoding());
            // PDG encoding: +/-n n_r N-L n_q1 n_q2 n_q3 n_J
          //int n_q3 = (abspdg/10  )%10;
            int n_q2 = (abspdg/100 )%10;
            int n_q1 = (abspdg/1000)%10;
            // charm  mesons have n_q2=4, charm  baryons n_q1=4
            // bottom mesons have n_q2=5, bottom baryons n_q1=5
            if ( n_q2 == 4 || n_q1 == 4 || n_q2 == 5 || n_q1 == 5 )
#endif
            {
               if ( particle->GetDecayTable() )
               {
                  delete particle->GetDecayTable();
                  particle->SetDecayTable(nullptr);
               }
               decay->SetExtDecayer(extDecayer);
            }
            // now set external decayer to all particles
            // that don't yet have a decay table
            if ( !particle->GetDecayTable() )
            {
               decay->SetExtDecayer(extDecayer);
            }
         }
      }
   }

   return;

}

---

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

• nug4/AdditionalG4Physics/Py8CharmDecayerPhysics.hh
• nug4/AdditionalG4Physics/Py8CharmDecayerPhysics.cc