Interfaces


 There are a number of interfaces utilised within the Athena-Atlfast Code.
A full discussion on Atlas interfaces is given here.


IKinematic

Most of the Atlfast physics output entities such as ReconstructedParticles, Jets and Cells honour the IKinematic Interface.

Methods

  • HepLorentzVector momentum()
  • double eta()
  • double phi()
  • double pT()
  • double eT()
  • double mT()


    IMCselector

    The IMCselector interface is designed for selection of particles in the TES.

    Methods

  • IMCselector* create()
  • bool operator()( const HepMC::Particle* )
  • bool operator()( const HepMC::Particle& )
    The create() method the constructor of a concrete type.
    The operator() methods return true or false depending on whether the HepMC::Particle passed to them fulfils the selectors requirements.

    ICellSelector

    Objects that honour this interface return a boolean when passed a Cell object. The value of the boolean depends on the individual selection criteria.

    Methods

  • bool operator()(const Cell*)

    ITrackTrajectory

    These return parameters of position of closest approach to origin,
    the directions at position of closest approach,
    the momentum at position of closest approach,
    the curvature related information
    and the sign of curvature (-1 or +1)

    Methods

  • double impactParameter()
  • double zPerigee()
  • double phi()
  • double eta()
  • double cotTheta()
  • double pT()
  • Hep3Vector threeMomentum()
  • operator Hep3Vector()
  • double invPtCharge()
  • double radius()
  • int signOfCharge()


    IMatrixManager

    This interface is used purely in the track smearing
    In returns a 5X5 HepMatrix when passed a TrackTrajectory Object

    Methods

    public:
  • HepMatrix* getMatrix(const TrackTrajectory& track)
    Private:
  • void initialise()
  • BinID getBinID(const TrackTrajectory& track)

    ISmearer

    All the     Smearers except the TrackSmearers honour the ISmearer interface.

    Methods

  • HepLorentzVector smear( const HepLorentzVector& )


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