ThePEG 2.3.0
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ME2to2Base can be used as a base class for any matrix element class implementing 2 \(\rightarrow\) 2 processes. More...
#include <ME2to2Base.h>
Public Member Functions | |
Standard constructors and destructors. | |
ME2to2Base () | |
Default constructor. | |
virtual | ~ME2to2Base () |
Destructor. | |
Virtual functions required by the MEBase class. | |
virtual int | nDim () const |
The number of internal degreed of freedom used in the matrix element. | |
virtual bool | generateKinematics (const double *r) |
Generate internal degrees of freedom given 'nDim()' uniform random numbers in the interval ]0,1[. | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics(). | |
virtual Energy2 | scale () const |
Return the scale associated with the last set phase space point. | |
virtual void | setKinematics () |
Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries() according to the associated XComb object. | |
virtual double | getCosTheta (double cthmin, double cthmax, const double *r) |
Used internally by generateKinematics, after calculating the limits on cos(theta). | |
int | scaleChoice () const |
Give the option corresponding to the way the scale of an interaction is calculated. | |
Access cached values in of the last set phase space point. | |
Energy2 | tHat () const |
Return the \(\hat{t}\) of the last set phase space point. | |
Energy2 | uHat () const |
Return the \(\hat{u}\) of the last set phase space point. | |
double | phi () const |
Return the azimuth angle of the last set phase space point. | |
Public Member Functions inherited from ThePEG::MEBase | |
MEBase () | |
Default constructor. | |
virtual | ~MEBase () |
Destructor. | |
virtual unsigned int | orderInAlphaS () const =0 |
Return the order in \(\alpha_S\) in which this matrix element is given. | |
virtual unsigned int | orderInAlphaEW () const =0 |
Return the order in \(\alpha_{EM}\) in which this matrix element is given. | |
virtual double | me2 () const =0 |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number. | |
virtual double | alphaS () const |
Return the value of \(\alpha_S\) associated with the phase space point provided by the last call to setKinematics(). | |
virtual double | alphaEM () const |
Return the value of \(\alpha_EM\) associated with the phase space point provided by the last call to setKinematics(). | |
void | setKinematics (tPPair in, const PVector &out) |
Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries(). | |
virtual void | constructVertex (tSubProPtr sub) |
construct the spin information for the interaction | |
virtual void | constructVertex (tSubProPtr sub, const ColourLines *cl) |
construct the spin information for the interaction | |
virtual bool | wantCMS () const |
Return true, if this matrix element expects the incoming partons in their center-of-mass system. | |
virtual bool | headCuts () const |
If this is a dependent matrix element in a ME group, return true, if cuts should be inherited from the head matrix element, i.e. | |
virtual bool | ignoreCuts () const |
If this is a dependent matrix element in a ME group, return true, if cuts should be ignored. | |
virtual bool | apply () const |
If this is a dependent matrix element in a ME group, return true, if it applies to the process set in lastXComb() | |
virtual map< string, double > | generateOptionalWeights () |
If variations are available for the subprocess handled, generate and return a map of optional weights to be included for the event. | |
virtual bool | haveX1X2 () const |
Return true, if this matrix element will generate momenta for the incoming partons itself. | |
virtual bool | havePDFWeight1 () const |
Return true, if this matrix element provides the PDF weight for the first incoming parton itself. | |
virtual bool | havePDFWeight2 () const |
Return true, if this matrix element provides the PDF weight for the second incoming parton itself. | |
virtual bool | keepRandomNumbers () const |
Return true, if the XComb steering this matrix element should keep track of the random numbers used to generate the last phase space point. | |
virtual void | generateSubCollision (SubProcess &) |
Comlete a SubProcess object using the internal degrees of freedom generated in the last generateKinematics() (and possible other degrees of freedom which was intergated over in dSigHatDR(). | |
virtual void | clearKinematics () |
Clear the information previously provided by a call to setKinematics(...). | |
virtual void | getDiagrams () const =0 |
Add all possible diagrams with the add() function. | |
virtual bool | noMirror () const |
Return true, if this matrix element does not want to make use of mirroring processes; in this case all possible partonic subprocesses with a fixed assignment of incoming particles need to be provided through the diagrams added with the add(...) method. | |
const DiagramVector & | diagrams () const |
Return all possible diagrams. | |
virtual Selector< const ColourLines * > | colourGeometries (tcDiagPtr diag) const =0 |
Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities. | |
virtual const ColourLines & | selectColourGeometry (tcDiagPtr diag) const |
Select a ColpurLines geometry. | |
virtual Selector< DiagramIndex > | diagrams (const DiagramVector &) const |
With the information previously supplied with the setKinematics(...) method, a derived class may optionally override this method to weight the given diagrams with their (although certainly not physical) relative probabilities. | |
virtual DiagramIndex | diagram (const DiagramVector &) const |
Select a diagram. | |
bool | reweighted () const |
Return true if this matrix element has associated (p)reWeight objects assigned. | |
double | reWeight () const |
With the information previously supplied with the setKinematics(...) methods, return the combined effects of the reweighters. | |
double | preWeight () const |
With the information previously supplied with the setKinematics(...) methods, return the comined effects of the peweighters. | |
void | addReweighter (tReweightPtr rw) |
Add objects to the list of reweighters. | |
void | addPreweighter (tReweightPtr rw) |
Add objects to the list of preweighters. | |
Ptr< Amplitude >::pointer | amplitude () const |
Return the amplitude associated with this matrix element. | |
void | amplitude (Ptr< Amplitude >::pointer amp) |
Set the amplitude associated with this matrix element. | |
Energy2 | sHat () const |
Return the last set invariant mass squared. | |
double | preweight () const |
Return the factor with which this matrix element was last pre-weighted. | |
virtual void | flushCaches () |
Inform this matrix element that a new phase space point is about to be generated, so all caches should be flushed. | |
virtual StdXCombPtr | makeXComb (Energy newMaxEnergy, const cPDPair &inc, tEHPtr newEventHandler, tSubHdlPtr newSubProcessHandler, tPExtrPtr newExtractor, tCascHdlPtr newCKKW, const PBPair &newPartonBins, tCutsPtr newCuts, const DiagramVector &newDiagrams, bool mir, const PartonPairVec &allPBins, tStdXCombPtr newHead=tStdXCombPtr(), tMEPtr newME=tMEPtr()) |
For the given event generation setup return a xcomb object appropriate to this matrix element. | |
virtual StdXCombPtr | makeXComb (tStdXCombPtr newHead, const PBPair &newPartonBins, const DiagramVector &newDiagrams, tMEPtr newME=tMEPtr()) |
For the given event generation setup return a dependent xcomb object appropriate to this matrix element. | |
virtual void | fillProjectors () |
Fill the projectors object of xcombs to choose subprocesses different than the one currently integrated. | |
virtual void | setXComb (tStdXCombPtr) |
Set the XComb object to be used in the next call to generateKinematics() and dSigHatDR(). | |
const DVector & | meInfo () const |
Retrieve information obtained in the calculation of the cross section to be used later when selecting diagrams and colour flow. | |
void | meInfo (const DVector &info) const |
Save information obtained in the calculation of the cross section to be used later when selecting diagrams and colour flow. | |
virtual int | maxMultCKKW () const |
If this matrix element is to be used together with others for CKKW reweighting and veto, this should give the multiplicity of outgoing particles in the highest multiplicity matrix element in the group. | |
virtual int | minMultCKKW () const |
If this matrix element is to be used together with others for CKKW reweighting and veto, this should give the multiplicity of outgoing particles in the lowest multiplicity matrix element in the group. | |
virtual void | maxMultCKKW (int mult) |
If this matrix element is to be used together with others for CKKW reweighting and veto, this will set the multiplicity of outgoing particles in the highest multiplicity matrix element in the group. | |
virtual void | minMultCKKW (int mult) |
If this matrix element is to be used together with others for CKKW reweighting and veto, this will set the multiplicity of outgoing particles in the lowest multiplicity matrix element in the group. | |
virtual void | setVetoScales (tSubProPtr) const |
Set veto scales on the particles at the given SubProcess which has been generated using this matrix element. | |
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. | |
Public Member Functions inherited from ThePEG::HandlerBaseT< UseRandom > | |
virtual | ~HandlerBaseT () |
Destructor. | |
double | rnd () const |
Return a simple flat random number in the range ]0,1[. | |
double | rnd (double xu) const |
Return a simple flat random number in the range ]0,xu[. | |
double | rnd (double xl, double xu) const |
Return a simple flat random number in the range ]xl,xu[. | |
bool | rndbool () const |
Return true with 50% probability. | |
bool | rndbool (double p) const |
Return a true with probability p. | |
bool | rndbool (double p1, double p2) const |
Return a true with probability p1/(p1+p2). | |
int | rndsign (double p1, double p2, double p3) const |
Return -1, 0, or 1 with relative probabilities p1, p2, p3. | |
int | rnd2 (double p0, double p1) const |
Return an integer \(i\) with probability p \(i\)/(p0+p1). | |
int | rnd3 (double p0, double p1, double p2) const |
Return an integer \(i\) with probability p \(i\)/(p0+p1+p2). | |
int | rnd4 (double p0, double p1, double p2, double p3) const |
Return an integer/ \(i\) with probability p \(i\)(p0+p1+p2+p3). | |
long | irnd (long xu=2) const |
Return a simple flat random integrer number in the range [0,xu[. | |
long | irnd (long xl, long xu) const |
Return a simple flat random integrer number in the range [xl,xu[. | |
const StandardModelBase & | SM () const |
Return a reference to the object containing the standard model parameters for this run. | |
tSMPtr | standardModel () const |
Return a pointer to the object containing the standard model parameters for this run. | |
Public Member Functions inherited from ThePEG::Interfaced | |
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. | |
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. | |
Public Member Functions inherited from ThePEG::InterfacedBase | |
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. | |
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(). | |
virtual IBPtr | fullclone () const |
Return a full clone of this object possibly doing things to the clone to make it sane. | |
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. | |
virtual void | debugme () const |
Print out debugging information for this object on std::cerr. | |
Public Member Functions inherited from ThePEG::Base | |
virtual | ~Base () |
The virtual destructor. | |
void | debug () const |
Print out debugging information for this object on std::cerr. | |
virtual void | debugme () const |
Print out debugging information for this object on std::cerr. | |
Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
CounterType | referenceCount () const |
Return the reference count. | |
Public Member Functions inherited from ThePEG::Named | |
Named (const string &newName=string()) | |
Constructor with name. | |
Named (const Named &)=default | |
Explicit default copy-constructor (too avoid compiler warnings) | |
const string & | name () const |
Return name. | |
bool | operator== (const Named &other) const |
Test for equality. | |
bool | operator< (const Named &other) const |
Lexicographical comparison. | |
Public Member Functions inherited from ThePEG::LastXCombInfo< StandardXComb > | |
const StandardXComb & | lastXComb () const |
Return a reference to the last selected XComb. | |
tXCPtr | lastXCombPtr () const |
Return a pointer to the last selected XComb. | |
const StandardXComb & | lastHeadXComb () const |
If the last selected XComb object belongs to a group of XComb's return a reference to the head XComb object for this group. | |
tXCPtr | lastHeadXCombPtr () const |
If the last selected XComb object belongs to a group of XComb's return a pointer to the head XComb object for this group. | |
const EventHandler & | lastEventHandler () const |
Return a reference to the currently used EventHandler. | |
tPExtrPtr | lastExtractor () const |
A pointer to the currently used parton extractor. | |
PDFT | pdf (tcPPtr parton) const |
Return the parton density used to extract the given parton. | |
const Cuts & | lastCuts () const |
A reference to the currently used kinematical cuts. | |
tCutsPtr | lastCutsPtr () const |
A pointer to the currently used kinematical cuts. | |
const PPair & | lastParticles () const |
Return the pair of incoming parton instances. | |
Energy2 | lastS () const |
The last generated total energy squared of the incoming particles. | |
const PPair & | lastPartons () const |
Return the pair of incoming parton instances. | |
Energy2 | lastSHat () const |
The last used interval in total parton-parton energy squared. | |
double | lastTau () const |
Return lastSHat()/lastS(). | |
double | lastY () const |
The generated rapidity of the hard scattering sub-system. | |
double | lastP1 () const |
Log of one over the momentum fraction of the first incoming particle w.r.t. | |
double | lastP2 () const |
Log of one over the momentum fraction of the second incoming particle w.r.t. | |
double | lastL1 () const |
Log of one over the first incoming parton momentum fraction w.r.t. | |
double | lastL2 () const |
Log of one over the second incoming parton momentum fraction w.r.t. | |
double | lastX1 () const |
The first incoming parton momentum fraction w.r.t. | |
double | lastX2 () const |
The second incoming parton momentum fraction w.r.t. | |
double | lastE1 () const |
Return 1-lastX1() to highest possible precision for x \(\rightarrow\) 1. | |
double | lastE2 () const |
Return 1-lastX2() to highest possible precision for x \(\rightarrow\) 1. | |
double | lastFL1L2 () const |
The product of the parton density functions at the last generated phase-space point. | |
Energy2 | lastScale () const |
The chosen scale of the hard scattering. | |
double | lastAlphaS () const |
Get the \(\alpha_S\) used in the hard scattering. | |
double | lastAlphaEM () const |
Get the \(\alpha_{EM}\) used in the hard scattering. | |
const vector< Lorentz5Momentum > & | meMomenta () const |
Return the momenta of the incoming and outgoing partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element. | |
double | lastME2 () const |
Return the matrix element squared as calculated for the last phase space point. | |
double | lastPreweight () const |
Return the last preweight factor. | |
double | jacobian () const |
Get the last jacobian obtained when generating the kinematics for the call to dSigHatDR. | |
CrossSection | lastMECrossSection () const |
Return the partonic cross section as calculated for the last phase space point. | |
double | lastMEPDFWeight () const |
Return the PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights. | |
double | lastMECouplings () const |
Return the coupling weight as calculated for the last phase space point. | |
tSubProPtr | subProcess () const |
Return the SubProcess object corresponding to the last generated sub-process. | |
const cPDVector & | mePartonData () const |
Return the incoming and outgoing parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element. | |
Set the cached values in of the last set phase space point. | |
int | theScaleChoice |
The option indicating how to calculate the scale of an interaction. | |
Energy2 | theLastTHat |
The \(\hat{t}\) of the last set phase space point. | |
Energy2 | theLastUHat |
The \(\hat{u}\) of the last set phase space point. | |
double | theLastPhi |
The azimuth angle of the last set phase space point. | |
static AbstractClassDescription< ME2to2Base > | initME2to2Base |
Describe an abstract base class with persistent data. | |
void | tHat (Energy2 e2) |
Set the \(\hat{t}\) of the last set phase space point. | |
void | uHat (Energy2 e2) |
Set the \(\hat{u}\) of the last set phase space point. | |
void | phi (double phi) |
Set the azimuth angle of the last set phase space point. | |
static Switch< ME2to2Base, int > & | interfaceScaleChoice () |
Access to the acutal Switch object used to determine the choice of scale. | |
ME2to2Base & | operator= (const ME2to2Base &)=delete |
Private and non-existent assignment operator. | |
Functions used by the persistent I/O system. | |
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. | |
static void | Init () |
Standard Init function used to initialize the interfaces. | |
Additional Inherited Members | |
Public Types inherited from ThePEG::MEBase | |
typedef vector< DiagPtr > | DiagramVector |
A vector of pointers to DiagramBase objects. | |
typedef DiagramVector::size_type | DiagramIndex |
The size_type used in the DiagramVector. | |
typedef vector< ReweightPtr > | ReweightVector |
A vector of pointers to ReweightBase objects. | |
Public Types inherited from ThePEG::InterfacedBase | |
enum | InitState { initializing = -1 , uninitialized = 0 , initialized = 1 , runready = 2 } |
Enumeration reflecting the state of an InterfacedBase object. More... | |
Public Types inherited from ThePEG::Pointer::ReferenceCounted | |
typedef unsigned int | CounterType |
The integer type used for counting. | |
Public Types inherited from ThePEG::LastXCombInfo< StandardXComb > | |
typedef ThePEG::Ptr< StandardXComb >::pointer | XCPtr |
Alias for a reference counted pointer to XC . | |
typedef ThePEG::Ptr< StandardXComb >::const_pointer | cXCPtr |
Alias for a reference counted pointer to a const XC . | |
typedef ThePEG::Ptr< StandardXComb >::transient_pointer | tXCPtr |
Alias for a transient pointer to XC . | |
typedef ThePEG::Ptr< StandardXComb >::transient_const_pointer | tcXCPtr |
Alias for a transient pointer to a const XC . | |
Static Public Member Functions inherited from ThePEG::MEBase | |
static void | Init () |
Standard Init function used to initialize the interfaces. | |
Static Public Member Functions inherited from ThePEG::HandlerBase | |
static void | Init () |
Standard Init function used to initialize the interface. | |
Static Public Member Functions inherited from ThePEG::Interfaced | |
static void | Init () |
Standard Init function. | |
Static Public Member Functions inherited from ThePEG::InterfacedBase | |
static void | Init () |
Standard Init function. | |
Static Public Member Functions inherited from ThePEG::Base | |
static void | Init () |
The standard Init function used to initialize the interfaces. | |
Public Attributes inherited from ThePEG::Pointer::ReferenceCounted | |
const unsigned long | uniqueId |
The unique ID. | |
Protected Member Functions inherited from ThePEG::MEBase | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. | |
virtual void | doinitrun () |
Initialize this object. | |
void | add (DiagPtr dp) const |
To be used by sub classes in the getDiagrams() method to add included diagrams. | |
vector< Lorentz5Momentum > & | meMomenta () |
Access the momenta set by the last call to generateKinematics(). | |
void | lastME2 (double v) const |
Set the matrix element squared as calculated for the last phase space point. | |
void | lastPreweight (double w) const |
Set the last preweight factor. | |
void | lastMECrossSection (CrossSection v) const |
Set the partonic cross section as calculated for the last phase space point. | |
void | lastMEPDFWeight (double v) const |
Set the PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights. | |
void | lastMECouplings (double v) const |
Set the coupling weight as calculated for the last phase space point. | |
void | jacobian (double j) |
Set the last jacobian obtained when generating the kinematics for the call to dSigHatDR. | |
void | use (tcMEPtr other) |
Initialize all member variables from another MEBase object. | |
void | useDiagrams (tcMEPtr other) const |
Initialize the diagrams from another MEBase object. | |
Protected Member Functions inherited from ThePEG::Interfaced | |
void | reporeg (IBPtr object, string name) const |
Register the given object in the Repository with the given name in a subdirectory with the same name as this object. | |
template<typename PtrT > | |
bool | setDefaultReference (PtrT &ptr, string classname, string objectname) |
If the pointer, ptr, to an object is not set, create an object of class classname and register it with the Repository with the given objectname in a sib-directory with the same name as this object. | |
Interfaced () | |
Protected default constructor. | |
Interfaced (const string &newName) | |
Protected constructor taking a name as argument. | |
Interfaced (const Interfaced &i) | |
Protected copy-constructor. | |
void | setGenerator (tEGPtr generator) |
Protected function to reset the generator pointer, required for automatic decayer generation in Herwig++ BSM models. | |
Protected Member Functions inherited from ThePEG::InterfacedBase | |
virtual void | readSetup (istream &is) |
Read setup info from a standard istream is. | |
virtual void | doupdate () |
Check sanity of the object during the setup phase. | |
virtual void | dofinish () |
Finalize this object. | |
virtual IVector | getReferences () |
Return a vector of all pointers to Interfaced objects used in this object. | |
virtual void | rebind (const TranslationMap &) |
Rebind pointer to other Interfaced objects. | |
virtual IBPtr | clone () const =0 |
Return a simple clone of this object. | |
InterfacedBase () | |
Protected default constructor. | |
InterfacedBase (string newName) | |
Protected constructor with the name given as argument. | |
InterfacedBase (const InterfacedBase &i) | |
Protected copy-constructor. | |
Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
ReferenceCounted () | |
Default constructor. | |
ReferenceCounted (const ReferenceCounted &) | |
Copy-constructor. | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
Assignment. | |
Protected Member Functions inherited from ThePEG::Named | |
const Named & | operator= (const Named &other) |
Assignment. | |
const string & | name (const string &newName) |
Set new name. | |
Static Protected Member Functions inherited from ThePEG::Interfaced | |
static void | registerRepository (IBPtr) |
Register an Interfaced object with the Repository. | |
static void | registerRepository (IBPtr, string newName) |
Register an Interfaced object with the Repository, giving it a name. | |
Protected Attributes inherited from ThePEG::LastXCombInfo< StandardXComb > | |
XCPtr | theLastXComb |
The pointer to the last selected XComb. | |
ME2to2Base can be used as a base class for any matrix element class implementing 2 \(\rightarrow\) 2 processes.
It extends the MEBase base class by implementing the virtual scale() method to return the assumed scale of a given process according to several options. It also caches some useful characteristics of the chosen phase space point, such as tHat(), uHat() and the masses of the external partons.
Definition at line 32 of file ME2to2Base.h.
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inline |
Default constructor.
Definition at line 41 of file ME2to2Base.h.
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virtual |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics().
Uses me().
Implements ThePEG::MEBase.
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virtual |
Generate internal degrees of freedom given 'nDim()' uniform random numbers in the interval ]0,1[.
To help the phase space generator, the 'dSigHatDR()' should be a smooth function of these numbers, although this is not strictly necessary. Return false if the chosen points failed the kinematical cuts.
Implements ThePEG::MEBase.
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inlinevirtual |
The number of internal degreed of freedom used in the matrix element.
Reimplemented from ThePEG::MEBase.
Definition at line 59 of file ME2to2Base.h.
void ThePEG::ME2to2Base::persistentInput | ( | PersistentIStream & | is, |
int | version | ||
) |
Function used to read in object persistently.
is | the persistent input stream read from. |
version | the version number of the object when written. |
void ThePEG::ME2to2Base::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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inline |
Return the azimuth angle of the last set phase space point.
Definition at line 119 of file ME2to2Base.h.
References theLastPhi.
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inlineprotected |
Set the azimuth angle of the last set phase space point.
Definition at line 162 of file ME2to2Base.h.
References phi(), and theLastPhi.
Referenced by phi().
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virtual |
Return the scale associated with the last set phase space point.
Implements ThePEG::MEBase.
Reimplemented in ThePEG::MEee2gZ2qq, and ThePEG::MENCDIS.
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inline |
Give the option corresponding to the way the scale of an interaction is calculated.
Definition at line 100 of file ME2to2Base.h.
References theScaleChoice.
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virtual |
Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries() according to the associated XComb object.
Reimplemented from ThePEG::MEBase.
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inline |
Return the \(\hat{t}\) of the last set phase space point.
Definition at line 109 of file ME2to2Base.h.
References theLastTHat.
Referenced by ThePEG::MEGG2QQ::colA(), ThePEG::MEQQ2GG::colA(), ThePEG::MEqq2qq::colA(), ThePEG::MEQQ2qq::colA(), ThePEG::MEQQ2QQ::colA(), ThePEG::MEQq2Qq::colA(), ThePEG::MEGG2GG::colA1(), ThePEG::MEQG2QG::colA1(), ThePEG::MEGG2GG::colA2(), ThePEG::MEGG2QQ::colB(), ThePEG::MEQQ2GG::colB(), ThePEG::MEqq2qq::colB(), ThePEG::MEQQ2QQ::colB(), ThePEG::MEQG2QG::colB1(), ThePEG::MEGG2GG::colC1(), and ThePEG::MEGG2GG::colC2().
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inlineprotected |
Set the \(\hat{t}\) of the last set phase space point.
Definition at line 152 of file ME2to2Base.h.
References theLastTHat.
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inline |
Return the \(\hat{u}\) of the last set phase space point.
Definition at line 114 of file ME2to2Base.h.
References theLastUHat.
Referenced by ThePEG::MEGG2QQ::colA(), ThePEG::MEQQ2GG::colA(), ThePEG::MEqq2qq::colA(), ThePEG::MEQQ2qq::colA(), ThePEG::MEQQ2QQ::colA(), ThePEG::MEQq2Qq::colA(), ThePEG::MEQG2QG::colA1(), ThePEG::MEQG2QG::colA2(), ThePEG::MEGG2QQ::colB(), ThePEG::MEQQ2GG::colB(), ThePEG::MEqq2qq::colB(), ThePEG::MEQQ2QQ::colB(), ThePEG::MEGG2GG::colB1(), ThePEG::MEGG2GG::colB2(), ThePEG::MEQG2QG::colB2(), ThePEG::MEGG2GG::colC1(), and ThePEG::MEGG2GG::colC2().
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inlineprotected |
Set the \(\hat{u}\) of the last set phase space point.
Definition at line 157 of file ME2to2Base.h.
References theLastUHat.
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staticprivate |
Describe an abstract base class with persistent data.
Definition at line 201 of file ME2to2Base.h.
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private |
The azimuth angle of the last set phase space point.
Definition at line 193 of file ME2to2Base.h.
Referenced by phi().
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private |
The \(\hat{t}\) of the last set phase space point.
Definition at line 183 of file ME2to2Base.h.
Referenced by tHat().
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private |
The \(\hat{u}\) of the last set phase space point.
Definition at line 188 of file ME2to2Base.h.
Referenced by uHat().
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private |
The option indicating how to calculate the scale of an interaction.
Definition at line 178 of file ME2to2Base.h.
Referenced by scaleChoice().