ChargedLeptons.hh

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// -*- C++ -*-
#ifndef RIVET_ChargedLeptons_HH
#define RIVET_ChargedLeptons_HH

#include "Rivet/Projection.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Particle.hh"
#include "Rivet/Event.hh"

namespace Rivet {


  /// Project out charged final-state leptons (i.e. electrons and muons, unless
  /// you set taus stable!)
  class ChargedLeptons : public Projection {
 
  public:
 
    /// Constructor
    ChargedLeptons(const FinalState& fsp)
    {
      setName("ChargedLeptons");
      addProjection(ChargedFinalState(fsp), "ChFS");
    }
 
    /// Clone on the heap.
    virtual const Projection* clone() const {
      return new ChargedLeptons(*this);
    }

  protected:
 
    /// Apply the projection to the event.
    void project(const Event& evt);
 
    /// Compare projections.
    int compare(const Projection& other) const;
 
  public:
 
    /// Access the projected leptons.
    const ParticleVector& chargedLeptons() const {
      return _theChargedLeptons;
    }
 
  private:

    /// The leptons
    ParticleVector _theChargedLeptons;
     
  };


}

#endif