Rivet  3.1.4
GammaGammaKinematics.hh
1 // -*- C++ -*-
2 #ifndef RIVET_GammaGammaKinematics_HH
3 #define RIVET_GammaGammaKinematics_HH
4 
5 #include "Rivet/Particle.hh"
6 #include "Rivet/Event.hh"
7 #include "Rivet/Projection.hh"
8 #include "Rivet/Projections/GammaGammaLeptons.hh"
9 #include "Rivet/Projections/Beam.hh"
10 
11 namespace Rivet {
12 
13 
16  public:
17 
20  const std::map<std::string,std::string> & opts =
21  std::map<std::string,std::string>())
22  : _theQ2(make_pair(-1.0,-1.0)), _theW2(-1.0) //,_theX(-1.0), _theY(-1.0), _theS(-1.0)
23  {
24  setName("GammaGammaKinematics");
25  //addPdgIdPair(ANY, hadid);
26  declare(Beam(), "Beam");
27  declare(lepton, "Lepton");
28  }
29 
32 
33 
34  protected:
35 
37  virtual void project(const Event& e);
38 
40  virtual CmpState compare(const Projection& p) const;
41 
42 
43  public:
44 
46  pair<double,double> Q2() const { return _theQ2; }
47 
49  double W2() const { return _theW2; }
50 
52  const ParticlePair& beamLeptons() const {
53  return _inLepton;
54  }
55 
57  const ParticlePair & scatteredLeptons() const {
58  return _outLepton;
59  }
60 
61 
62 
63  private:
64 
66  pair<double,double> _theQ2;
67 
69  double _theW2;
70 
72  ParticlePair _inLepton, _outLepton;
73 
74  };
75 
76 
77 }
78 
79 #endif
void setName(const std::string &name)
Used by derived classes to set their name.
Definition: Projection.hh:142
Definition: MC_Cent_pPb.hh:10
virtual void project(const Event &e)
Perform the projection operation on the supplied event.
Get the incoming and outgoing leptons in a gamma gamma collision event in e+e-.
Definition: GammaGammaLeptons.hh:18
DEFAULT_RIVET_PROJ_CLONE(GammaGammaKinematics)
Clone on the heap.
Get the gamma gamma kinematic variables and relevant boosts for an event.
Definition: GammaGammaKinematics.hh:15
Representation of a HepMC event, and enabler of Projection caching.
Definition: Event.hh:22
const ParticlePair & scatteredLeptons() const
The scattered GammaGamma lepton.
Definition: GammaGammaKinematics.hh:57
const PROJ & declare(const PROJ &proj, const std::string &name)
Register a contained projection (user-facing version)
Definition: ProjectionApplier.hh:170
Project out the incoming beams.
Definition: Beam.hh:129
const ParticlePair & beamLeptons() const
The incoming lepton beam particle.
Definition: GammaGammaKinematics.hh:52
double W2() const
The .
Definition: GammaGammaKinematics.hh:49
Base class for all Rivet projections.
Definition: Projection.hh:29
virtual CmpState compare(const Projection &p) const
Compare with other projections.
GammaGammaKinematics(const GammaGammaLeptons &lepton=GammaGammaLeptons(), const std::map< std::string, std::string > &opts=std::map< std::string, std::string >())
The default constructor.
Definition: GammaGammaKinematics.hh:19
pair< double, double > Q2() const
The .
Definition: GammaGammaKinematics.hh:46