G4FragmentingString.hh

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// $Id$
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#ifndef G4FragmentingString_h
#define G4FragmentingString_h 1
 
// ------------------------------------------------------------
//      GEANT 4 class header file
//
//      ---------------- G4FragmentingString ----------------
//             by Gunter Folger, September 2001.
//       class for an excited string used in Fragmention
// ------------------------------------------------------------
 
#include "G4ios.hh"
#include "globals.hh"
#include "G4ThreeVector.hh"
#include "G4LorentzVector.hh"
#include "G4ParticleDefinition.hh"
 
class G4ExcitedString;
 
class G4FragmentingString 
{
 
  public:
     
      G4FragmentingString(const G4FragmentingString &right);
      G4FragmentingString(const G4ExcitedString &excited);
      G4FragmentingString(const G4FragmentingString &old,
              G4ParticleDefinition * newdecay,
              const G4LorentzVector *momentum);
      G4FragmentingString(const G4FragmentingString &old,
              G4ParticleDefinition * newdecay);
              
      ~G4FragmentingString();
 
      G4FragmentingString& operator=(const G4FragmentingString &);
      int operator==(const G4FragmentingString &right) const;
 
      int operator!=(const G4FragmentingString &right) const;
 
      
      G4LorentzVector Get4Momentum() const;
 
      G4ThreeVector StablePt();
      G4ThreeVector DecayPt();
      
      G4double LightConePlus();
      G4double LightConeMinus();
      G4double LightConeDecay();
   
      G4double Mass() const;
      G4double Mass2() const;
      G4double MassT2() const;
      
      G4ParticleDefinition* GetLeftParton(void) const;
      G4ParticleDefinition* GetRightParton(void) const;
      
      G4ParticleDefinition* GetStableParton() const; // stable at the moment
      G4ParticleDefinition* GetDecayParton() const;  // currently involved in fragmentation
 
      void SetLeftPartonStable();
      void SetRightPartonStable();
 
      G4int GetDecayDirection() const;
            
      G4bool    DecayIsQuark();
      G4bool    StableIsQuark();
      G4bool    FourQuarkString(void) const;
 
 
  private:
 
      G4ParticleDefinition *LeftParton, *RightParton; 
      G4ThreeVector Ptleft,Ptright;    // Pt (px,py) for partons (pz ignored!)
      G4double Pplus, Pminus;        // p-, p+ of string, Plus ass. to Left!
  
      G4ParticleDefinition * theStableParton, * theDecayParton;
      
      enum DecaySide { None, Left, Right };
      DecaySide decaying; 
};
 
inline
int G4FragmentingString::operator==(const G4FragmentingString &right) const
{
    return this == &right;
}
 
inline
int G4FragmentingString::operator!=(const G4FragmentingString &right) const
{
    return this != &right;
}
 
 
inline
G4ParticleDefinition * G4FragmentingString::GetStableParton() const
{
     return  theStableParton;
}   
 
inline
G4ParticleDefinition * G4FragmentingString::GetDecayParton() const
{
     return  theDecayParton;
}   
 
inline
G4ParticleDefinition* G4FragmentingString::GetLeftParton(void) const
    {
    return LeftParton; 
    }
 
inline
G4ParticleDefinition* G4FragmentingString::GetRightParton(void) const
    {
    return RightParton; 
    }
 
 
 
#endif