DipoleFormFactor.h

// -*- C++ -*-
#ifndef ThePEG_DipoleFormFactor_H
#define ThePEG_DipoleFormFactor_H
//
// This is the declaration of the DipoleFormFactor class.
//
 
#include "NucleonFormFactor.h"
#include "ThePEG/Utilities/Maths.h"
 
namespace ThePEG {
 
class DipoleFormFactor: public NucleonFormFactor {
 
public:
 
  DipoleFormFactor() : q02_(0.71*GeV2)
  {}
 
  Complex formFactor(tcPDPtr , Energy2 q2) const {
    return Math::powi((1 + q2/q02_),-2);
  }
 
public:
 
  void persistentOutput(PersistentOStream & os) const;
 
  void persistentInput(PersistentIStream & is, int version);
 
  static void Init();
 
protected:
 
  virtual IBPtr clone() const;
 
  virtual IBPtr fullclone() const;
 
private:
 
  DipoleFormFactor & operator=(const DipoleFormFactor &) = delete;
 
private:
 
  Energy2 q02_;
  
};
 
}
 
#endif /* ThePEG_DipoleFormFactor_H */