ThePEG
1.8.0
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The GeneralVVSVertex class implements a general Vector-Vector-Scalar vertex allowing for decay modes that only enter at the one-loop level. More...
#include <GeneralVVSVertex.h>
Public Member Functions | |
GeneralVVSVertex () | |
The default constructor. | |
virtual void | setCoupling (Energy2 q2, tcPDPtr part1, tcPDPtr part2, tcPDPtr part3)=0 |
Calculate coupling. | |
virtual Complex | evaluate (Energy2 q2, const VectorWaveFunction &vec1, const VectorWaveFunction &vec2, const ScalarWaveFunction &sca3) |
Members to calculate the helicity amplitude expressions for vertices and off-shell particles. | |
virtual VectorWaveFunction | evaluate (Energy2 q2, int iopt, tcPDPtr out, const VectorWaveFunction &vec2, const ScalarWaveFunction &sca3, complex< Energy > mass=-GeV, complex< Energy > width=-GeV) |
Evaluate the off-shell vector coming from the vertex. | |
virtual ScalarWaveFunction | evaluate (Energy2 q2, int iopt, tcPDPtr out, const VectorWaveFunction &vec1, const VectorWaveFunction &vec2, complex< Energy > mass=-GeV, complex< Energy > width=-GeV) |
Evaluate the off-shell scalar coming from the vertex. | |
Set and Get tensor coefficients. | |
Complex | a00 () const |
Access coefficient of ![]() | |
Complex | a11 () const |
Access coefficient of ![]() | |
Complex | a12 () const |
Access coefficient of ![]() | |
Complex | a21 () const |
Access coefficient of ![]() | |
Complex | a22 () const |
Access coefficient of ![]() | |
Complex | aEp () const |
Access coefficient of ![]() | |
void | a00 (const Complex &val) |
Set tensor coefficient of ![]() | |
void | a11 (const Complex &val) |
Set tensor coefficient of ![]() | |
void | a12 (const Complex &val) |
Set tensor coefficient of ![]() | |
void | a21 (const Complex &val) |
Set tensor coefficient of ![]() | |
void | a22 (const Complex &val) |
Set tensor coefficient of ![]() | |
void | aEp (const Complex &val) |
Set tensor coefficient of ![]() | |
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AbstractVVSVertex () | |
Default constructor. | |
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VertexBase (VertexType::T name, bool kine=false) | |
Constructor for ![]() | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. | |
unsigned int | size () const |
Access to the particle information. | |
bool | isIncoming (tPDPtr p) const |
Is a particle allowed as an incoming particle? | |
bool | isOutgoing (tPDPtr p) const |
Is a particle allowed as an outgoing particle? | |
const set< tPDPtr > & | incoming () const |
Get the list of incoming particles. | |
const set< tPDPtr > & | outgoing () const |
Get the list of outgoing particles. | |
Complex | norm () const |
Get the coupling. | |
vector< long > | search (unsigned int ilist, long id) const |
Function to search the list. | |
vector< tPDPtr > | search (unsigned int ilist, tcPDPtr id) const |
Function to search the list. | |
bool | allowed (long id1, long id2, long id3, long id4=0) const |
Is a given combination allowed. | |
VertexType::T | getName () const |
Get name of Vertex. | |
unsigned int | getNpoint () const |
Get number of lines on Vertex. | |
unsigned int | orderInGem () const |
Get the order in ![]() | |
unsigned int | orderInGs () const |
Get the order in ![]() | |
double | strongCoupling (Energy2 q2) const |
Strong coupling. | |
double | electroMagneticCoupling (Energy2 q2) const |
Electromagnetic coupling. | |
double | weakCoupling (Energy2 q2) const |
Weak coupling. | |
double | sin2ThetaW () const |
bool | kinematics () const |
Whether or not to calculate the kinematics invariants. | |
void | kinematics (bool kine) |
Set whether or not to calculate the kinematics invariants. | |
void | calculateKinematics (const Lorentz5Momentum &p0, const Lorentz5Momentum &p1, const Lorentz5Momentum &p2) |
Calculate the kinematics for a 3-point vertex. | |
void | calculateKinematics (const Lorentz5Momentum &p0, const Lorentz5Momentum &p1, const Lorentz5Momentum &p2, const Lorentz5Momentum &p3) |
Calculate the kinematics for a 4-point vertex. | |
void | calculateKinematics (const vector< Lorentz5Momentum > &p) |
Calculate the kinematics for a n-point vertex. | |
Energy2 | invariant (unsigned int ix, unsigned int iy) const |
Get one of the kinematic invariants. | |
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virtual | ~Interfaced () |
Empty virtual destructor. | |
virtual bool | defaultInit () |
Functions which are to be used during the actual event generation, after the setup is complete. | |
PPtr | getParticle (PID) const |
Create a new Particle instance given a id number. | |
PDPtr | getParticleData (PID) const |
Return a pointer to the ParticleData object corresponding to the given id number. | |
bool | used () const |
Returns true if this object has actally been used. | |
void | useMe () const |
Should be called to indicate that this object has actually been used. | |
tEGPtr | generator () const |
Return a pointer to the EventGenerator controlling the run. | |
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virtual | ~InterfacedBase () |
The virtual (empty) destructor;. | |
string | fullName () const |
Returns the full name of this object including its path, e.g. | |
string | name () const |
Returns the name of this object, without the path. | |
string | path () const |
Returns the path to this object including the trailing '/'. | |
string | comment () const |
Returns a comment assigned to this object. | |
void | setup (istream &is) |
Read setup info from a standard istream is. | |
virtual IBPtr | fullclone () const |
Return a full clone of this object possibly doing things to the clone to make it sane. | |
virtual void | debugme () const |
Print out debugging information for this object on std::cerr. | |
void | update () |
Calls the doupdate() function with recursion prevention. | |
void | init () |
Calls the doinit() function with recursion prevention. | |
virtual bool | preInitialize () const |
Return true if this object needs to be initialized before all other objects (except those for which this function also returns true). | |
void | initrun () |
Calls the doinitrun() function with recursion prevention. | |
void | finish () |
Calls the dofinish() function with recursion prevention. | |
void | touch () |
This function should be called every time something in this object has changed in a way that a sanity check with update() is needed. | |
void | reset () |
Set the state of this object to uninitialized. | |
void | clear () |
Calls reset() and unTouch(). | |
InitState | state () const |
Return the state of initialization of this object. | |
bool | locked () const |
Return true if the BaseRepository is not allowed to change the state of this object. | |
bool | touched () const |
Return true if the state of this object has been changed since the last call to update(). | |
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virtual | ~Base () |
The virtual destructor. | |
void | debug () const |
Print out debugging information for this object on std::cerr. | |
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CounterType | referenceCount () const |
Return the reference count. | |
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Named (const string &newName=string()) | |
Constructor with name. | |
bool | operator== (const Named &other) const |
Test for equality. | |
bool | operator< (const Named &other) const |
Lexicographical comparison. |
Static Public Member Functions | |
static void | Init () |
The standard Init function used to initialize the interfaces. |
Private Member Functions | |
GeneralVVSVertex & | operator= (const GeneralVVSVertex &) |
The assignment operator is private and must never be called. |
Private Attributes | |
Store tensor coefficients. | |
Complex | _a00 |
Coefficient of ![]() | |
Complex | _a11 |
Coefficient of ![]() | |
Complex | _a12 |
Coefficient of ![]() | |
Complex | _a21 |
Coefficient of ![]() | |
Complex | _a22 |
Coefficient of ![]() | |
Complex | _aEp |
Coefficient of ![]() |
Static Private Attributes | |
static AbstractNoPIOClassDescription < GeneralVVSVertex > | initGeneralVVSVertex |
The static object used to initialize the description of this class. |
The GeneralVVSVertex class implements a general Vector-Vector-Scalar vertex allowing for decay modes that only enter at the one-loop level.
The loop integral is calculated by Passarino-Veltman reduction and the coefficients are stored here. They must be calculated in the inheriting class along with implementation of the setCoupling member.
The vertex takes the form
Definition at line 34 of file GeneralVVSVertex.h.
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virtual |
Members to calculate the helicity amplitude expressions for vertices and off-shell particles.
Evaluate the vertex.
q2 | The scale ![]() |
vec1 | The wavefunction for the first vector. |
vec2 | The wavefunction for the second vector. |
sca3 | The wavefunction for the scalar. |
Implements ThePEG::Helicity::AbstractVVSVertex.
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virtual |
Evaluate the off-shell vector coming from the vertex.
q2 | The scale ![]() |
iopt | Option of the shape of the Breit-Wigner for the off-shell vector. |
out | The ParticleData pointer for the off-shell vector. |
vec2 | The wavefunction for the vector. |
sca3 | The wavefunction for the scalar. |
mass | The mass of the off-shell particle if not taken from the ParticleData object |
width | The width of the off-shell particle if not taken from the ParticleData object |
Implements ThePEG::Helicity::AbstractVVSVertex.
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virtual |
Evaluate the off-shell scalar coming from the vertex.
q2 | The scale ![]() |
iopt | Option of the shape of the Breit-Wigner for the off-shell scalar. |
out | The ParticleData pointer for the off-shell scalar. |
vec1 | The wavefunction for the first vector. |
vec2 | The wavefunction for the second vector. |
mass | The mass of the off-shell particle if not taken from the ParticleData object |
width | The width of the off-shell particle if not taken from the ParticleData object |
Implements ThePEG::Helicity::AbstractVVSVertex.
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static |
The standard Init function used to initialize the interfaces.
Called exactly once for each class by the class description system before the main function starts or when this class is dynamically loaded.
Reimplemented from ThePEG::Helicity::AbstractVVSVertex.
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private |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
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pure virtual |
Calculate coupling.
q2 | Scale at which to evaluate couplings |
part1 | ParticleDataPointer to first particle |
part2 | ParticleDataPointer to second particle |
part3 | ParticleDataPointer to third particle |
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staticprivate |
The static object used to initialize the description of this class.
Indicates that this is an abstract class without persistent data.
Definition at line 189 of file GeneralVVSVertex.h.