Rivet/Projections/InitialQuarks.hh

0001 // -*- C++ -*-
0002 #ifndef RIVET_InitialQuarks_HH
0003 #define RIVET_InitialQuarks_HH
0004
0005 #ifndef I_KNOW_THE_INITIAL_QUARKS_PROJECTION_IS_DODGY_BUT_NEED_TO_USE_IT
0006 #warning "This is a dangerous projection for a few specific old analyses. Not for general use!"
0007 #endif
0008
0009 #include "Rivet/Projection.hh"
0010 #include "Rivet/Particle.hh"
0011 #include "Rivet/Event.hh"
0012
0013 namespace Rivet {
0014
0015
0016   /// @brief Project out quarks from the hard process in \f$ e^+ e^- \to Z^0 \f$ events
0017   ///
0018   /// @deprecated We're not sure exactly when we'll get rid of this, but it's going to happen...
0019   ///
0020   /// @warning This is a very dangerous and specific projection!
0021   class InitialQuarks : public Projection {
0022   public:
0023
0024     /// @name Standard constructors and destructors.
0025     /// @{
0026     /// The default constructor. May specify the minimum and maximum
0027     /// pseudorapidity \f$ \eta \f$ and the min \f$ p_T \f$ (in GeV).
0028     InitialQuarks() {
0029       setName("InitialQuarks");
0030     }
0031
0032     /// Clone on the heap.
0033     RIVET_DEFAULT_PROJ_CLONE(InitialQuarks);
0034
0035     /// @}
0036
0037     /// Import to avoid warnings about overload-hiding
0038     using Projection::operator =;
0039
0040
0041     /// Access the projected final-state particles.
0042     virtual const Particles& particles() const { return _theParticles; }
0043
0044     /// Is this final state empty?
0045     virtual bool empty() const { return _theParticles.empty(); }
0046
0047
0048   protected:
0049
0050     /// Apply the projection to the event.
0051     virtual void project(const Event& e);
0052
0053     /// Compare projections.
0054     virtual CmpState compare(const Projection&) const {
0055       return CmpState::EQ;
0056     }
0057
0058
0059   protected:
0060
0061     /// The final-state particles.
0062     Particles _theParticles;
0063
0064   };
0065
0066
0067 }
0068
0069 #endif