Herwig
7.2.1
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The MEPP2HiggsPowheg class implements the matrix element for the process pp->Higgs with different Higgs shape prescriptions (see details in hep-ph/9505211) and the NLL corrected Higgs width (see details in the FORTRAN HERWIG manual). More...
#include <MEPP2HiggsPowheg.h>
Public Member Functions | |
MEPP2HiggsPowheg () | |
The default constructor. | |
void | get_born_variables () const |
Function to set the born variables. | |
double | NLOweight () const |
Calculate the correction weight with which leading-order configurations are re-weighted. | |
Energy2 | s (double xt, double y) const |
Invariant required for the evaluation of next-to-leading order quantities (Frixione et al. More... | |
Energy2 | tk (double xt, double y) const |
Invariant required for the evaluation of next-to-leading order quantities (Frixione et al. More... | |
Energy2 | uk (double xt, double y) const |
Invariant required for the evaluation of next-to-leading order quantities (Frixione et al. More... | |
double | xbar (double y) const |
Calculate the minimum of . | |
double | etabar (double y) const |
Calculate auxiliary function of , . | |
double | x (double xt, double y) const |
Calculate the variable from the integration variables. | |
double | xp (double x, double y) const |
Calculate the momentum fraction of the plus parton. | |
double | xm (double x, double y) const |
Calculate the momentum fraction of the minus parton. | |
double | Lhat_ab (tcPDPtr a, tcPDPtr b, double x, double y) const |
Calculate the ratio of the NLO luminosity to the LO luminosity function for the initiated channel. | |
double | Vtilde_universal () const |
Calculate the universal soft-virtual contribution to the NLO weight. | |
double | Ctilde_Ltilde_gg_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | Ctilde_Ltilde_qg_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | Ctilde_Ltilde_gq_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | M_V_regular () const |
The regular part of the virtual correction matrix element(s) | |
Energy2 | t_u_M_R_qqbar (double xt, double y) const |
The matrix element q + qbar -> n + g times tk*uk. | |
Energy2 | t_u_M_R_qbarq (double xt, double y) const |
The matrix element qbar + q -> n + g times tk*uk. | |
Energy2 | t_u_M_R_gg (double xt, double y) const |
The matrix element g + g -> n + g times tk*uk. | |
Energy2 | t_u_M_R_qg (double xt, double y) const |
The matrix element q + g -> n + q times tk*uk. | |
Energy2 | t_u_M_R_gq (double xt, double y) const |
The matrix element g + q -> n + q times tk*uk. | |
double | Rtilde_Ltilde_qqbar_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | Rtilde_Ltilde_qbarq_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | Rtilde_Ltilde_gg_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | Rtilde_Ltilde_qg_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
double | Rtilde_Ltilde_gq_on_x (tcPDPtr a, tcPDPtr b, double xt, double y) const |
Function for calculation of the initiated real contribution. | |
Virtual functions required by the MEBase class. | |
virtual double | me2 () const |
The matrix element for the kinematical configuration previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number. More... | |
virtual bool | generateKinematics (const double *r) |
Generate internal degrees of freedom given nDim() uniform random numbers in the interval . More... | |
virtual Energy2 | scale () const |
Return the scale associated with the last set phase space point. | |
virtual int | nDim () const |
The number of internal degrees of freedom used in the matrix element. | |
Functions used by the persistent I/O system. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
Public Member Functions inherited from Herwig::MEPP2Higgs | |
MEPP2Higgs () | |
The default constructor. | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics(). More... | |
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 POWHEGType | hasPOWHEGCorrection () |
Has a POWHEG style correction. | |
virtual bool | hasMECorrection () |
Has an old fashioned ME correction. | |
virtual void | initializeMECorrection (RealEmissionProcessPtr, double &, double &) |
Initialize the ME correction. | |
virtual RealEmissionProcessPtr | applyHardMatrixElementCorrection (RealEmissionProcessPtr) |
Apply the hard matrix element correction to a given hard process or decay. | |
virtual bool | softMatrixElementVeto (PPtr parent, PPtr progenitor, const bool &fs, const Energy &highestpT, const vector< tcPDPtr > &ids, const double &z, const Energy &scale, const Energy &pT) |
Apply the soft matrix element correction. More... | |
virtual RealEmissionProcessPtr | generateHardest (RealEmissionProcessPtr, ShowerInteraction) |
Apply the POWHEG style correction. | |
virtual unsigned int | orderInAlphaS () const |
Return the order in in which this matrix element is given. | |
virtual unsigned int | orderInAlphaEW () const |
Return the order in in which this matrix element is given. | |
virtual void | getDiagrams () const |
Add all possible diagrams with the add() function. | |
virtual Selector< DiagramIndex > | diagrams (const DiagramVector &dv) const |
Get diagram selector. More... | |
virtual Selector< const ColourLines * > | colourGeometries (tcDiagPtr diag) const |
Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities. More... | |
virtual void | constructVertex (tSubProPtr) |
Construct the vertex of spin correlations. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
Public Member Functions inherited from Herwig::HwMEBase | |
HwMEBase () | |
Default constructor. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
Public Member Functions inherited from ThePEG::MEBase | |
virtual double | alphaS () const |
virtual double | alphaEM () const |
void | setKinematics (tPPair in, const PVector &out) |
virtual void | constructVertex (tSubProPtr sub, const ColourLines *cl) |
virtual bool | wantCMS () const |
virtual bool | headCuts () const |
virtual bool | ignoreCuts () const |
virtual bool | apply () const |
virtual map< string, double > | generateOptionalWeights () |
virtual bool | haveX1X2 () const |
virtual bool | havePDFWeight1 () const |
virtual bool | havePDFWeight2 () const |
virtual bool | keepRandomNumbers () const |
virtual void | generateSubCollision (SubProcess &) |
virtual void | clearKinematics () |
virtual bool | noMirror () const |
const DiagramVector & | diagrams () const |
virtual const ColourLines & | selectColourGeometry (tcDiagPtr diag) const |
virtual DiagramIndex | diagram (const DiagramVector &) const |
bool | reweighted () const |
double | reWeight () const |
double | preWeight () const |
void | addReweighter (tReweightPtr rw) |
void | addPreweighter (tReweightPtr rw) |
Ptr< Amplitude >::pointer | amplitude () const |
void | amplitude (Ptr< Amplitude >::pointer amp) |
Energy2 | sHat () const |
double | preweight () const |
virtual void | flushCaches () |
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()) |
virtual StdXCombPtr | makeXComb (tStdXCombPtr newHead, const PBPair &newPartonBins, const DiagramVector &newDiagrams, tMEPtr newME=tMEPtr()) |
virtual void | fillProjectors () |
virtual void | setXComb (tStdXCombPtr) |
const DVector & | meInfo () const |
void | meInfo (const DVector &info) const |
virtual int | maxMultCKKW () const |
virtual int | minMultCKKW () const |
virtual void | maxMultCKKW (int mult) |
virtual void | minMultCKKW (int mult) |
virtual void | setVetoScales (tSubProPtr) const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
virtual double | alphaS () const |
virtual double | alphaEM () const |
void | setKinematics (tPPair in, const PVector &out) |
virtual void | constructVertex (tSubProPtr sub, const ColourLines *cl) |
virtual bool | wantCMS () const |
virtual bool | headCuts () const |
virtual bool | ignoreCuts () const |
virtual bool | apply () const |
virtual map< string, double > | generateOptionalWeights () |
virtual bool | haveX1X2 () const |
virtual bool | havePDFWeight1 () const |
virtual bool | havePDFWeight2 () const |
virtual bool | keepRandomNumbers () const |
virtual void | generateSubCollision (SubProcess &) |
virtual void | clearKinematics () |
virtual bool | noMirror () const |
const DiagramVector & | diagrams () const |
virtual const ColourLines & | selectColourGeometry (tcDiagPtr diag) const |
virtual DiagramIndex | diagram (const DiagramVector &) const |
bool | reweighted () const |
double | reWeight () const |
double | preWeight () const |
void | addReweighter (tReweightPtr rw) |
void | addPreweighter (tReweightPtr rw) |
Ptr< Amplitude >::pointer | amplitude () const |
void | amplitude (Ptr< Amplitude >::pointer amp) |
Energy2 | sHat () const |
double | preweight () const |
virtual void | flushCaches () |
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()) |
virtual StdXCombPtr | makeXComb (tStdXCombPtr newHead, const PBPair &newPartonBins, const DiagramVector &newDiagrams, tMEPtr newME=tMEPtr()) |
virtual void | fillProjectors () |
virtual void | setXComb (tStdXCombPtr) |
const DVector & | meInfo () const |
void | meInfo (const DVector &info) const |
virtual int | maxMultCKKW () const |
virtual int | minMultCKKW () const |
virtual void | maxMultCKKW (int mult) |
virtual void | minMultCKKW (int mult) |
virtual void | setVetoScales (tSubProPtr) const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from HandlerBaseT< UseRandom > | |
double | rnd () const |
double | rnd (double xu) const |
double | rnd (double xl, double xu) const |
bool | rndbool () const |
bool | rndbool (double p) const |
bool | rndbool (double p1, double p2) const |
int | rndsign (double p1, double p2, double p3) const |
int | rnd2 (double p0, double p1) const |
int | rnd3 (double p0, double p1, double p2) const |
int | rnd4 (double p0, double p1, double p2, double p3) const |
long | irnd (long xu=2) const |
long | irnd (long xl, long xu) const |
const StandardModelBase & | SM () const |
tSMPtr | standardModel () const |
Public Member Functions inherited from ThePEG::Interfaced | |
virtual bool | defaultInit () |
PPtr | getParticle (PID) const |
PDPtr | getParticleData (PID) const |
bool | used () const |
void | useMe () const |
tEGPtr | generator () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
PPtr | getParticle (PID) const |
PDPtr | getParticleData (PID) const |
bool | used () const |
void | useMe () const |
tEGPtr | generator () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from ThePEG::InterfacedBase | |
string | fullName () const |
string | name () const |
string | path () const |
string | comment () const |
void | setup (istream &is) |
virtual void | debugme () const |
void | update () |
void | init () |
virtual bool | preInitialize () const |
void | initrun () |
void | finish () |
void | touch () |
void | reset () |
void | clear () |
InitState | state () const |
bool | locked () const |
bool | touched () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
void | update () |
void | init () |
virtual bool | preInitialize () const |
void | initrun () |
void | finish () |
void | touch () |
void | reset () |
void | clear () |
InitState | state () const |
bool | locked () const |
bool | touched () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from ThePEG::Base | |
void | debug () const |
Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
CounterType | referenceCount () const |
Public Member Functions inherited from ThePEG::Named | |
Named (const string &newName=string()) | |
Named (const Named &)=default | |
const string & | name () const |
bool | operator== (const Named &other) const |
bool | operator< (const Named &other) const |
Public Member Functions inherited from ThePEG::LastXCombInfo< StandardXComb > | |
const StandardXComb & | lastXComb () const |
const StandardXComb & | lastXComb () const |
tXCPtr | lastXCombPtr () const |
tXCPtr | lastXCombPtr () const |
const StandardXComb & | lastHeadXComb () const |
const StandardXComb & | lastHeadXComb () const |
tXCPtr | lastHeadXCombPtr () const |
tXCPtr | lastHeadXCombPtr () const |
const EventHandler & | lastEventHandler () const |
const EventHandler & | lastEventHandler () const |
tPExtrPtr | lastExtractor () const |
tPExtrPtr | lastExtractor () const |
PDFT | pdf (tcPPtr parton) const |
PDFT | pdf (tcPPtr parton) const |
const Cuts & | lastCuts () const |
const Cuts & | lastCuts () const |
tCutsPtr | lastCutsPtr () const |
tCutsPtr | lastCutsPtr () const |
const PPair & | lastParticles () const |
const PPair & | lastParticles () const |
Energy2 | lastS () const |
Energy2 | lastS () const |
const PPair & | lastPartons () const |
const PPair & | lastPartons () const |
Energy2 | lastSHat () const |
Energy2 | lastSHat () const |
double | lastTau () const |
double | lastTau () const |
double | lastY () const |
double | lastY () const |
double | lastP1 () const |
double | lastP1 () const |
double | lastP2 () const |
double | lastP2 () const |
double | lastL1 () const |
double | lastL1 () const |
double | lastL2 () const |
double | lastL2 () const |
double | lastX1 () const |
double | lastX1 () const |
double | lastX2 () const |
double | lastX2 () const |
double | lastE1 () const |
double | lastE1 () const |
double | lastE2 () const |
double | lastE2 () const |
double | lastFL1L2 () const |
double | lastFL1L2 () const |
Energy2 | lastScale () const |
Energy2 | lastScale () const |
double | lastAlphaS () const |
double | lastAlphaS () const |
double | lastAlphaEM () const |
double | lastAlphaEM () const |
const vector< Lorentz5Momentum > & | meMomenta () const |
const vector< Lorentz5Momentum > & | meMomenta () const |
double | lastME2 () const |
double | lastME2 () const |
double | lastPreweight () const |
double | lastPreweight () const |
double | jacobian () const |
double | jacobian () const |
CrossSection | lastMECrossSection () const |
CrossSection | lastMECrossSection () const |
double | lastMEPDFWeight () const |
double | lastMEPDFWeight () const |
double | lastMECouplings () const |
double | lastMECouplings () const |
tSubProPtr | subProcess () const |
tSubProPtr | subProcess () const |
const cPDVector & | mePartonData () const |
const cPDVector & | mePartonData () const |
Static Public Member Functions | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
Static Public Member Functions inherited from Herwig::MEPP2Higgs | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
Static Public Member Functions inherited from Herwig::HwMEBase | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
Static Public Member Functions inherited from ThePEG::MEBase | |
static void | Init () |
Static Public Member Functions inherited from ThePEG::HandlerBase | |
static void | Init () |
Static Public Member Functions inherited from ThePEG::Interfaced | |
static void | Init () |
Static Public Member Functions inherited from ThePEG::InterfacedBase | |
static void | Init () |
Static Public Member Functions inherited from ThePEG::Base | |
static void | Init () |
Protected Member Functions | |
Clone Methods. | |
virtual IBPtr | clone () const |
Make a simple clone of this object. More... | |
virtual IBPtr | fullclone () const |
Make a clone of this object, possibly modifying the cloned object to make it sane. More... | |
Protected Member Functions inherited from Herwig::MEPP2Higgs | |
tPDPtr | quarkFlavour (tcPDFPtr pdf, Energy2 scale, double x, tcBeamPtr beam, double &pdfweight, bool anti) |
Method to extract the PDF weight for quark/antiquark initiated processes and select the quark flavour. | |
bool | applyHard (ParticleVector gluons, vector< tcBeamPtr > beams, PPtr higgs, unsigned int &iemit, unsigned int &itype, vector< Lorentz5Momentum > &pnew, pair< double, double > &xnew, tPDPtr &out) |
Return the momenta and type of hard matrix element correction. More... | |
bool | getEvent (vector< Lorentz5Momentum > &pnew, int &emissiontype) |
generates the hardest emission (yj,p) More... | |
double | getResult (int emis_type, Energy pt, double yj, tcPDPtr &outParton) |
Returns the matrix element for a given type of process, rapidity of the jet and transverse momentum . More... | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. More... | |
virtual void | dofinish () |
Finalize this object. More... | |
Energy4 | loME () const |
Members to calculate the real emission matrix elements. More... | |
Energy2 | ggME (Energy2 s, Energy2 t, Energy2 u) |
The matrix element for . | |
Energy2 | qgME (Energy2 s, Energy2 t, Energy2 u) |
The matrix element for . | |
Energy2 | qbargME (Energy2 s, Energy2 t, Energy2 u) |
The matrix element for . | |
Complex | B (Energy2 s, Energy2 mf2) const |
Members to calculate the functions for the loop diagrams. More... | |
complex< InvEnergy2 > | C (Energy2 s, Energy2 mf2) const |
The function of NBP339 (1990) 38-66. More... | |
complex< InvEnergy4 > | D (Energy2 s, Energy2 t, Energy2 u, Energy2 mf2) const |
The function of NBP339 (1990) 38-66. More... | |
Complex | dIntegral (Energy2 a, Energy2 b, double y0) const |
The integral from NBP339 (1990) 38-66. More... | |
complex< Energy > | me1 (Energy2 s, Energy2 t, Energy2 u, Energy2 mf2, unsigned int i, unsigned int j, unsigned int k, unsigned int i1, unsigned int j1, unsigned int k1) const |
The matrix element of NBP339 (1990) 38-66. More... | |
complex< Energy > | me2 (Energy2 s, Energy2 t, Energy2 u, Energy2 mf2) const |
The matrix element of NBP339 (1990) 38-66. More... | |
Complex | F (double x) const |
The function for the leading-order result. | |
Protected Member Functions inherited from Herwig::HwMEBase | |
void | massOption (vector< unsigned int > iopt) |
Set the treatment of the outgoing masses. More... | |
bool | generateMasses (vector< Energy > &masses, double &mjac, const double *r) |
Generate the masses of the particles. | |
virtual double | getCosTheta (double cthmin, double cthmax, const double r) |
Used internally by generateKinematics, after calculating the limits on cos(theta). | |
Energy2 | tHat () const |
Return the of the last set phase space point. | |
Energy2 | uHat () const |
Return the of the last set phase space point. | |
double | phi () const |
Return the azimuth angle of the last set phase space point. | |
void | tHat (Energy2 e2) |
Set the of the last set phase space point. | |
void | uHat (Energy2 e2) |
Set the of the last set phase space point. | |
void | phi (double phi) |
Set the azimuth angle of the last set phase space point. | |
void | rescalingOption (unsigned int iopt) |
Rescaled momenta for the helicity ME. More... | |
bool | rescaleMomenta (const vector< Lorentz5Momentum > &, const cPDVector &) |
rescale the momenta for the computation of the helicity matrix element | |
const vector< Lorentz5Momentum > & | rescaledMomenta () const |
Access to the rescaled momenta. | |
Protected Member Functions inherited from ThePEG::MEBase | |
void | add (DiagPtr dp) const |
vector< Lorentz5Momentum > & | meMomenta () |
void | lastME2 (double v) const |
void | lastPreweight (double w) const |
void | lastMECrossSection (CrossSection v) const |
void | lastMEPDFWeight (double v) const |
void | lastMECouplings (double v) const |
void | jacobian (double j) |
void | use (tcMEPtr other) |
void | useDiagrams (tcMEPtr other) const |
virtual void | doinitrun () |
virtual void | doinitrun () |
Protected Member Functions inherited from ThePEG::Interfaced | |
void | reporeg (IBPtr object, string name) const |
bool | setDefaultReference (PtrT &ptr, string classname, string objectname) |
Interfaced (const string &newName) | |
Interfaced (const Interfaced &i) | |
void | setGenerator (tEGPtr generator) |
Protected Member Functions inherited from ThePEG::InterfacedBase | |
InterfacedBase (string newName) | |
InterfacedBase (const InterfacedBase &i) | |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
ReferenceCounted (const ReferenceCounted &) | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
ReferenceCounted (const ReferenceCounted &) | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
Protected Member Functions inherited from ThePEG::Named | |
const Named & | operator= (const Named &other) |
const string & | name (const string &newName) |
Private Member Functions | |
MEPP2HiggsPowheg & | operator= (const MEPP2HiggsPowheg &)=delete |
The assignment operator is private and must never be called. More... | |
Private Attributes | |
double | lo_lumi_ |
Values of the PDF's before radiation. | |
double | lo_ggME_ |
The value of the leading order gg->H matrix element. | |
Energy2 | p2_ |
The invariant mass of the lo final state. | |
Energy2 | s2_ |
The invariant mass of the lo final state. | |
double | xbp_ |
The momentum fraction of the plus parton in the Born process. | |
double | xbm_ |
The momentum fraction of the minus parton in the Born process. | |
double | etabarp_ |
The sqrt(1-xbp_) | |
double | etabarm_ |
The sqrt(1-xbm_) | |
tcPDPtr | a_lo_ |
The ParticleData object for the plus lo parton. | |
tcPDPtr | b_lo_ |
The ParticleData object for the minus lo parton. | |
Ptr< BeamParticleData >::transient_const_pointer | hadron_A_ |
The BeamParticleData object for the plus direction hadron. | |
Ptr< BeamParticleData >::transient_const_pointer | hadron_B_ |
The BeamParticleData object for the minus direction hadron. | |
double | alphaS_ |
The value of used for the calculation. | |
unsigned int | scaleopt_ |
Selects a dynamic (sHat) or fixed factorization scale. | |
Energy | mu_F_ |
The factorization scale. | |
Energy | mu_UV_ |
The renormalization scale. | |
double | scaleFact_ |
Prefactor if variable scale used. | |
const double | CF_ |
Parameters for the NLO weight. More... | |
const double | CA_ |
const double | TR_ |
const int | nlf_ |
Number of light flavours (in the beta function beta0_) | |
const double | beta0_ |
(Proportional to) The beta function | |
unsigned int | contrib_ |
Whether to generate the positive, negative or leading order contribution. | |
unsigned int | nlo_alphaS_opt_ |
Whether to use a fixed or a running QCD coupling for the NLO weight. | |
double | fixed_alphaS_ |
The value of alphaS to use for the nlo weight if nlo_alphaS_opt_=1. | |
double | xt_ |
Radiation variables. More... | |
double | y_ |
The angular variable. | |
Additional Inherited Members | |
Public Types inherited from Herwig::HwMEBase | |
enum | POWHEGType { No, ISR, FSR, Both } |
Virtual members to be overridden by inheriting classes which implement hard corrections. More... | |
Public Types inherited from ThePEG::MEBase | |
typedef vector< DiagPtr > | DiagramVector |
typedef DiagramVector::size_type | DiagramIndex |
typedef vector< ReweightPtr > | ReweightVector |
Public Types inherited from ThePEG::InterfacedBase | |
enum | InitState |
Public Types inherited from ThePEG::Pointer::ReferenceCounted | |
typedef unsigned int | CounterType |
Public Types inherited from ThePEG::LastXCombInfo< StandardXComb > | |
typedef ThePEG::Ptr< StandardXComb >::pointer | XCPtr |
typedef ThePEG::Ptr< StandardXComb >::const_pointer | cXCPtr |
typedef ThePEG::Ptr< StandardXComb >::transient_pointer | tXCPtr |
typedef ThePEG::Ptr< StandardXComb >::transient_const_pointer | tcXCPtr |
Public Attributes inherited from ThePEG::InterfacedBase | |
initializing | |
uninitialized | |
initialized | |
runready | |
Public Attributes inherited from ThePEG::Pointer::ReferenceCounted | |
const unsigned long | uniqueId |
Static Protected Member Functions inherited from ThePEG::Interfaced | |
static void | registerRepository (IBPtr) |
static void | registerRepository (IBPtr, string newName) |
Protected Attributes inherited from ThePEG::LastXCombInfo< StandardXComb > | |
XCPtr | theLastXComb |
The MEPP2HiggsPowheg class implements the matrix element for the process pp->Higgs with different Higgs shape prescriptions (see details in hep-ph/9505211) and the NLL corrected Higgs width (see details in the FORTRAN HERWIG manual).
Definition at line 30 of file MEPP2HiggsPowheg.h.
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inlineprotectedvirtual |
Make a simple clone of this object.
Reimplemented from Herwig::MEPP2Higgs.
Definition at line 262 of file MEPP2HiggsPowheg.h.
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inlineprotectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from Herwig::MEPP2Higgs.
Definition at line 268 of file MEPP2HiggsPowheg.h.
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virtual |
Generate internal degrees of freedom given nDim() uniform random numbers in the interval .
To help the phase space generator, the dSigHatDR should be a smooth function of these numbers, although this is not strictly necessary.
r | a pointer to the first of nDim() consecutive random numbers. |
Reimplemented from Herwig::MEPP2Higgs.
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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.
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virtual |
The matrix element for the kinematical configuration previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number.
Reimplemented from Herwig::MEPP2Higgs.
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privatedelete |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
void Herwig::MEPP2HiggsPowheg::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 Herwig::MEPP2HiggsPowheg::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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inline |
Invariant required for the evaluation of next-to-leading order quantities (Frixione et al.
NPB.383 WZ production at colliders).
Definition at line 115 of file MEPP2HiggsPowheg.h.
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inline |
Invariant required for the evaluation of next-to-leading order quantities (Frixione et al.
NPB.383 WZ production at colliders).
Definition at line 123 of file MEPP2HiggsPowheg.h.
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inline |
Invariant required for the evaluation of next-to-leading order quantities (Frixione et al.
NPB.383 WZ production at colliders).
Definition at line 132 of file MEPP2HiggsPowheg.h.
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private |
Parameters for the NLO weight.
The colour factors
Definition at line 288 of file MEPP2HiggsPowheg.h.
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private |