ThePEG::HepMCTraitsBase< HepMCEventT, HepMCParticleT, HepMCVertexT, HepMCPolarizationT, HepMCPdfInfoT > Struct Template Reference

HepMCTraitsBase is a convenient base class for specializing the HepMCTraits class to deal with different flavours of HepMC in the HepMCConverter class. More...

#include <HepMCTraits.h>

List of all members.

Public Types

typedef HepMCParticleT ParticleT

Typedef of the particle class.

typedef HepMCEventT EventT

Typedef of the event class.

typedef HepMCVertexT VertexT

Typedef of the vertex class.

typedef HepMCPolarizationT PolarizationT

Typedef of the polarization class.

typedef HepMCPdfInfoT PdfInfoT

Typedef of the PdfInfo class.

Static Public Member Functions

static EventT * newEvent (long evno, double weight)

Create an event object with number evno and weight.

static bool hasUnits ()

Return true if this version of HepMC accept user-defined units.

static Energy defaultEnergyUnit ()

Return the energy unit used in the installed version of HepMC.

static Length defaultLengthUnit ()

Return the length unit used in the installed version of HepMC.

static Energy momentumUnit (const EventT &e)

Return the momentum unit used by a given GenEvent object.

static Length lengthUnit (const EventT &e)

Return the length unit used by a given GenEvent object.

static void setUnits (EventT &, Energy, Length)

Set the units to be used by the given GenEvent object.

static void setScaleAndAlphas (EventT &e, Energy2 scale, double aS, double aEM, Energy unit)

Set the scale, $\alpha_S$ (aS) and $\alpha_{EM}$ (aEM) for the event e.

static void setSignalProcessVertex (EventT &e, VertexT *v)

Set the primary vertex, v, for the event e.

static void addVertex (EventT &e, VertexT *v)

Set a vertex, v, for the event e.

static ParticleT * newParticle (const Lorentz5Momentum &p, long id, int status, Energy unit)

Create a new particle object with momentum p, PDG number id and status code status.

static void setPolarization (ParticleT &genp, double the, double phi)

Set the polarization directions, the and phi, for particle p.

static void setColourLine (ParticleT &p, int indx, int coline)

Set the colour line (with index indx) to coline for particle p.

static VertexT * newVertex ()

Create a new vertex.

static void addIncoming (VertexT &v, ParticleT *p)

Add an incoming particle, p, to the vertex, v.

static void addOutgoing (VertexT &v, ParticleT *p)

Add an outgoing particle, p, to the vertex, v.

static void setPosition (VertexT &v, const LorentzPoint &p, Length unit)

Set the position p for the vertex, v.

static void setBeamParticles (EventT &e, ParticleT *p1, ParticleT *p2)

Set the beam particles for the event.

static void setPdfInfo (EventT &, int, int, double, double, double, double, double)

Set the PDF info for the event.

static void setCrossSection (EventT &, double, double)

Set the cross section info for the event.

Detailed Description

template<typename HepMCEventT, typename HepMCParticleT, typename HepMCVertexT, typename HepMCPolarizationT, typename HepMCPdfInfoT>
struct ThePEG::HepMCTraitsBase< HepMCEventT, HepMCParticleT, HepMCVertexT, HepMCPolarizationT, HepMCPdfInfoT >

HepMCTraitsBase is a convenient base class for specializing the HepMCTraits class to deal with different flavours of HepMC in the HepMCConverter class.

The default version will work for the CLHEP implementation of HepMC. To use the HepMCConverter class for any flavour of HepMC you have to specialize the HepMCTraits class accordingly, possibly inheriting the functionality from the HepMCTraitsBase class and only overriding the functions and typedefs which are different. For the CLHEP flavour of HepMC you only need to do template<> struct HepMCTraits<HepMC::GenEvent>: public HepMCTraitsBase<HepMC::GenEvent,HepMC::GenParticle,HepMC::GenVertex, HepMC::Polarization> {}; somewhere inside the ThePEG namespace. The boolean template argument determines whether the HepMC implementation is specifying units or not.

Definition at line 46 of file HepMCTraits.h.