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Herwig
7.2.1
MatrixElement
Matchbox
Base
MatchboxHybridAmplitude.h
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// -*- C++ -*-
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//
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// MatchboxHybridAmplitude.h is a part of Herwig - A multi-purpose Monte Carlo event generator
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// Copyright (C) 2002-2019 The Herwig Collaboration
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//
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// Herwig is licenced under version 3 of the GPL, see COPYING for details.
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// Please respect the MCnet academic guidelines, see GUIDELINES for details.
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//
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#ifndef Herwig_MatchboxHybridAmplitude_H
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#define Herwig_MatchboxHybridAmplitude_H
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//
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// This is the declaration of the MatchboxHybridAmplitude class.
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//
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#include "Herwig/MatrixElement/Matchbox/Base/MatchboxAmplitude.h"
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namespace
Herwig
{
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using namespace
ThePEG
;
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class
MatchboxHybridAmplitude
:
public
Herwig::MatchboxAmplitude
{
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public
:
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MatchboxHybridAmplitude
();
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virtual
~
MatchboxHybridAmplitude
();
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public
:
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53
Ptr<MatchboxAmplitude>::tptr
treeLevelAmplitude
()
const
{
return
theTreeLevelAmplitude; }
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void
treeLevelAmplitude
(Ptr<MatchboxAmplitude>::tptr amp) { theTreeLevelAmplitude = amp; }
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virtual
Ptr<MatchboxAmplitude>::tptr
oneLoopAmplitude
()
const
{
return
theOneLoopAmplitude; }
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void
oneLoopAmplitude
(Ptr<MatchboxAmplitude>::tptr amp) { theOneLoopAmplitude = amp; }
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bool
isConsistent()
const
;
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public
:
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virtual
bool
canHandle(
const
PDVector
& p,
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Ptr<MatchboxFactory>::tptr f,
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bool
virt)
const
;
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virtual
int
nDimAdditional
()
const
{
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if
( !oneLoopAmplitude() )
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return
treeLevelAmplitude()->nDimAdditional();
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return
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treeLevelAmplitude()->nDimAdditional() ?
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treeLevelAmplitude()->nDimAdditional() :
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oneLoopAmplitude()->nDimAdditional();
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}
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virtual
Ptr<MatchboxMEBase>::ptr
makeME
(
const
PDVector
& p)
const
{
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return
treeLevelAmplitude()->makeME(p);
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}
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virtual
void
orderInGs
(
unsigned
int
n) {
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treeLevelAmplitude()->orderInGs(n);
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if
( oneLoopAmplitude() )
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oneLoopAmplitude()->orderInGs(n);
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}
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virtual
unsigned
int
orderInGs
()
const
{
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return
treeLevelAmplitude()->orderInGs();
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}
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virtual
void
orderInGem
(
unsigned
int
n) {
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treeLevelAmplitude()->orderInGem(n);
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if
( oneLoopAmplitude() )
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oneLoopAmplitude()->orderInGem(n);
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}
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virtual
unsigned
int
orderInGem
()
const
{
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return
treeLevelAmplitude()->orderInGem();
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}
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virtual
bool
hasInitialAverage
()
const
{
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return
treeLevelAmplitude()->hasInitialAverage();
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}
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virtual
bool
hasFinalStateSymmetry
()
const
{
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return
treeLevelAmplitude()->hasFinalStateSymmetry();
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}
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virtual
bool
isOLPTree
()
const
{
return
false
; }
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virtual
bool
isOLPLoop
()
const
{
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if
( !oneLoopAmplitude() )
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return
false
;
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return
oneLoopAmplitude()->isOLPLoop();
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}
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virtual
bool
needsOLPCorrelators
()
const
{
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return
theUseOLPCorrelators;
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}
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virtual
bool
startOLP
(
const
map<pair<Process,int>,
int
>& procs) {
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->startOLP(procs);
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}
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virtual
bool
isExternal
()
const
{
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return
treeLevelAmplitude()->isExternal();
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}
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virtual
bool
initializeExternal
() {
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return
treeLevelAmplitude()->initializeExternal();
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}
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virtual
int
externalId
(
const
cPDVector
& proc) {
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return
treeLevelAmplitude()->externalId(proc);
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}
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virtual
Ptr<ColourBasis>::tptr
colourBasis
()
const
{
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return
treeLevelAmplitude()->colourBasis();
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}
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virtual
bool
haveColourFlows
()
const
{
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return
treeLevelAmplitude()->haveColourFlows();
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}
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virtual
Selector<const ColourLines *>
colourGeometries
(tcDiagPtr diag)
const
{
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return
treeLevelAmplitude()->colourGeometries(diag);
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}
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virtual
void
setXComb
(tStdXCombPtr xc) {
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treeLevelAmplitude()->setXComb(xc);
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if
( oneLoopAmplitude() )
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oneLoopAmplitude()->setXComb(xc);
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lastMatchboxXComb(xc);
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}
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virtual
void
fillCrossingMap
(
size_t
shift = 0) {
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treeLevelAmplitude()->fillCrossingMap(shift);
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}
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virtual
void
prepareAmplitudes(Ptr<MatchboxMEBase>::tcptr);
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virtual
double
me2
()
const
{
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return
treeLevelAmplitude()->me2();
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}
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virtual
double
largeNME2
(Ptr<ColourBasis>::tptr largeNBasis)
const
{
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return
treeLevelAmplitude()->largeNME2(largeNBasis);
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}
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virtual
double
colourCorrelatedME2
(pair<int,int> ij)
const
{
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return
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theUseOLPCorrelators ?
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oneLoopAmplitude()->colourCorrelatedME2(ij) :
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treeLevelAmplitude()->colourCorrelatedME2(ij);
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}
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virtual
double
largeNColourCorrelatedME2
(pair<int,int> ij,
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Ptr<ColourBasis>::tptr largeNBasis)
const
{
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return
treeLevelAmplitude()->largeNColourCorrelatedME2(ij,largeNBasis);
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}
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virtual
LorentzVector<Complex>
plusPolarization
(
const
Lorentz5Momentum& p,
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const
Lorentz5Momentum& n,
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int
id
= -1)
const
{
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return
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theUseOLPCorrelators ?
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oneLoopAmplitude()->plusPolarization(p,n,
id
) :
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treeLevelAmplitude()->plusPolarization(p,n,
id
);
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}
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virtual
double
spinColourCorrelatedME2
(pair<int,int> emitterSpectator,
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const
SpinCorrelationTensor
& c)
const
{
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return
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theUseOLPCorrelators ?
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oneLoopAmplitude()->spinColourCorrelatedME2(emitterSpectator,c) :
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treeLevelAmplitude()->spinColourCorrelatedME2(emitterSpectator,c);
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}
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virtual
double
spinCorrelatedME2
(pair<int,int> emitterSpectator,
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const
SpinCorrelationTensor
& c)
const
{
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return
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theUseOLPCorrelators ?
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oneLoopAmplitude()->spinCorrelatedME2(emitterSpectator,c) :
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treeLevelAmplitude()->spinCorrelatedME2(emitterSpectator,c);
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}
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virtual
bool
canFillRhoMatrix
()
const
{
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return
treeLevelAmplitude()->canFillRhoMatrix();
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}
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virtual
vector<unsigned int>
physicalHelicities
(
const
vector<int>& hel)
const
{
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return
treeLevelAmplitude()->physicalHelicities(hel);
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}
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virtual
bool
treeAmplitudes
()
const
{
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return
treeLevelAmplitude()->treeAmplitudes();
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}
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virtual
Complex
evaluate
(
size_t
a,
const
vector<int>& hel,
Complex
& largeN) {
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return
treeLevelAmplitude()->evaluate(a,hel,largeN);
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}
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virtual
void
disableOneLoop
() { oneLoopAmplitude(Ptr<MatchboxAmplitude>::ptr()); }
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virtual
bool
haveOneLoop
()
const
{
return
oneLoopAmplitude(); }
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virtual
bool
onlyOneLoop
()
const
{
return
false
; }
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virtual
bool
oneLoopAmplitudes
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->oneLoopAmplitudes();
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}
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virtual
bool
isDRbar
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->isDRbar();
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}
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virtual
bool
isDR
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->isDR();
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}
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virtual
bool
isCS
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->isCS();
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}
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virtual
bool
isBDK
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->isBDK();
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}
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virtual
bool
isExpanded
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->isExpanded();
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}
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virtual
Energy2
mu2
()
const
{
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->mu2();
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}
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double
symmetryRatio()
const
;
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virtual
bool
hasRunningAlphaS
()
const
{
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return
treeLevelAmplitude()->hasRunningAlphaS();
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}
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virtual
bool
hasRunningAlphaEW
()
const
{
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return
treeLevelAmplitude()->hasRunningAlphaEW();
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}
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virtual
double
oneLoopDoublePole
()
const
{
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assert(oneLoopAmplitude());
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return
symmetryRatio()*oneLoopAmplitude()->oneLoopDoublePole();
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}
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virtual
double
oneLoopSinglePole
()
const
{
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assert(oneLoopAmplitude());
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return
symmetryRatio()*oneLoopAmplitude()->oneLoopSinglePole();
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}
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virtual
void
prepareOneLoopAmplitudes(Ptr<MatchboxMEBase>::tcptr);
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virtual
double
oneLoopInterference
()
const
{
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assert(oneLoopAmplitude());
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return
symmetryRatio()*oneLoopAmplitude()->oneLoopInterference();
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}
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virtual
Complex
evaluateOneLoop
(
size_t
a,
const
vector<int>& hel) {
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assert(oneLoopAmplitude());
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return
oneLoopAmplitude()->evaluateOneLoop(a,hel);
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}
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527
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virtual
void
flushCaches
() {
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treeLevelAmplitude()->flushCaches();
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if
( oneLoopAmplitude() )
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oneLoopAmplitude()->flushCaches();
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}
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virtual
void
cloneDependencies(
const
std::string& prefix=
""
,
bool
slim=
false
);
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protected
:
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virtual
void
doinit();
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virtual
void
doinitrun();
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public
:
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void
persistentOutput(
PersistentOStream
& os)
const
;
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void
persistentInput(
PersistentIStream
& is,
int
version);
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static
void
Init();
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protected
:
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virtual
IBPtr
clone()
const
;
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virtual
IBPtr
fullclone()
const
;
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// If needed, insert declarations of virtual function defined in the
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// InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
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private
:
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615
Ptr<MatchboxAmplitude>::ptr
theTreeLevelAmplitude
;
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Ptr<MatchboxAmplitude>::ptr
theOneLoopAmplitude
;
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625
bool
theUseOLPCorrelators
;
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631
MatchboxHybridAmplitude
& operator=(
const
MatchboxHybridAmplitude
&) =
delete
;
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};
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}
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#endif
/* Herwig_MatchboxHybridAmplitude_H */
Herwig::MatchboxHybridAmplitude::orderInGem
virtual void orderInGem(unsigned int n)
Set the (tree-level) order in in which this matrix element should be evaluated.
Definition:
MatchboxHybridAmplitude.h:131
Herwig::MatchboxHybridAmplitude::initializeExternal
virtual bool initializeExternal()
Initialize this amplitude.
Definition:
MatchboxHybridAmplitude.h:203
Herwig::MatchboxHybridAmplitude::isBDK
virtual bool isBDK() const
Return true, if one loop corrections are given in the conventions of BDK.
Definition:
MatchboxHybridAmplitude.h:440
Herwig::MatchboxHybridAmplitude::colourBasis
virtual Ptr< ColourBasis >::tptr colourBasis() const
Return the colour basis.
Definition:
MatchboxHybridAmplitude.h:222
ThePEG::PersistentIStream
ThePEG::LorentzVector< Complex >
Herwig::MatchboxHybridAmplitude::hasRunningAlphaEW
virtual bool hasRunningAlphaEW() const
Indicate that this amplitude is running alphaew by itself.
Definition:
MatchboxHybridAmplitude.h:480
Herwig::MatchboxHybridAmplitude::treeAmplitudes
virtual bool treeAmplitudes() const
Return true, if tree-level contributions will be evaluated at amplitude level.
Definition:
MatchboxHybridAmplitude.h:365
ThePEG::Complex
std::complex< double > Complex
Herwig::MatchboxHybridAmplitude::startOLP
virtual bool startOLP(const map< pair< Process, int >, int > &procs)
Start the one loop provider, if appropriate.
Definition:
MatchboxHybridAmplitude.h:187
Herwig::MatchboxHybridAmplitude::hasFinalStateSymmetry
virtual bool hasFinalStateSymmetry() const
Return true, if this amplitude already includes symmetry factors for identical outgoing particles...
Definition:
MatchboxHybridAmplitude.h:157
Herwig::MatchboxHybridAmplitude::isDR
virtual bool isDR() const
Return true, if one loop corrections have been calculated in dimensional reduction.
Definition:
MatchboxHybridAmplitude.h:422
Herwig::MatchboxHybridAmplitude::isExpanded
virtual bool isExpanded() const
Return true, if one loop corrections are given in the conventions of everything expanded.
Definition:
MatchboxHybridAmplitude.h:449
Herwig::MatchboxHybridAmplitude::fillCrossingMap
virtual void fillCrossingMap(size_t shift=0)
Perform a normal ordering of external legs and fill the crossing information as.
Definition:
MatchboxHybridAmplitude.h:263
Herwig::MatchboxHybridAmplitude::theUseOLPCorrelators
bool theUseOLPCorrelators
True, if correlators should be used from the OLP amplitude.
Definition:
MatchboxHybridAmplitude.h:625
Herwig::MatchboxHybridAmplitude::isOLPLoop
virtual bool isOLPLoop() const
Return true, if this amplitude is handled by a BLHA one-loop provider.
Definition:
MatchboxHybridAmplitude.h:169
Herwig::MatchboxHybridAmplitude::plusPolarization
virtual LorentzVector< Complex > plusPolarization(const Lorentz5Momentum &p, const Lorentz5Momentum &n, int id=-1) const
Return a positive helicity polarization vector for a gluon of momentum p (with reference vector n) to...
Definition:
MatchboxHybridAmplitude.h:315
ThePEG::PersistentOStream
Herwig::MatchboxHybridAmplitude::hasInitialAverage
virtual bool hasInitialAverage() const
Return true, if this amplitude already includes averaging over incoming parton's quantum numbers...
Definition:
MatchboxHybridAmplitude.h:149
Herwig::MatchboxHybridAmplitude::me2
virtual double me2() const
Return the matrix element squared.
Definition:
MatchboxHybridAmplitude.h:281
Herwig::MatchboxHybridAmplitude::hasRunningAlphaS
virtual bool hasRunningAlphaS() const
Indicate that this amplitude is running alphas by itself.
Definition:
MatchboxHybridAmplitude.h:473
ThePEG::IBPtr
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
Herwig::MatchboxHybridAmplitude::largeNColourCorrelatedME2
virtual double largeNColourCorrelatedME2(pair< int, int > ij, Ptr< ColourBasis >::tptr largeNBasis) const
Return the large-N colour correlated matrix element.
Definition:
MatchboxHybridAmplitude.h:305
Herwig::MatchboxHybridAmplitude::largeNME2
virtual double largeNME2(Ptr< ColourBasis >::tptr largeNBasis) const
Return the largeN matrix element squared.
Definition:
MatchboxHybridAmplitude.h:288
Herwig::MatchboxHybridAmplitude::spinColourCorrelatedME2
virtual double spinColourCorrelatedME2(pair< int, int > emitterSpectator, const SpinCorrelationTensor &c) const
Return the colour and spin correlated matrix element.
Definition:
MatchboxHybridAmplitude.h:327
Herwig::MatchboxHybridAmplitude::oneLoopDoublePole
virtual double oneLoopDoublePole() const
If defined, return the coefficient of the pole in epsilon^2.
Definition:
MatchboxHybridAmplitude.h:487
Herwig::MatchboxHybridAmplitude::evaluateOneLoop
virtual Complex evaluateOneLoop(size_t a, const vector< int > &hel)
Evaluate the amplitude for the given colour tensor id and helicity assignment.
Definition:
MatchboxHybridAmplitude.h:518
Herwig::MatchboxHybridAmplitude::disableOneLoop
virtual void disableOneLoop()
Diasble one-loop functionality if not needed.
Definition:
MatchboxHybridAmplitude.h:385
ThePEG
Herwig::MatchboxHybridAmplitude::theOneLoopAmplitude
Ptr< MatchboxAmplitude >::ptr theOneLoopAmplitude
The amplitude object to provide one-loop amplitudes.
Definition:
MatchboxHybridAmplitude.h:620
Herwig::MatchboxHybridAmplitude::mu2
virtual Energy2 mu2() const
Return the value of the dimensional regularization parameter.
Definition:
MatchboxHybridAmplitude.h:459
Herwig::MatchboxHybridAmplitude::oneLoopSinglePole
virtual double oneLoopSinglePole() const
If defined, return the coefficient of the pole in epsilon.
Definition:
MatchboxHybridAmplitude.h:495
Herwig::MatchboxHybridAmplitude
MatchboxHybridAmplitude unifies two amplitude objects to provide tree and one-loop matrix elements...
Definition:
MatchboxHybridAmplitude.h:31
Herwig::MatchboxHybridAmplitude::nDimAdditional
virtual int nDimAdditional() const
Return the number of random numbers required to evaluate this amplitude at a fixed phase space point...
Definition:
MatchboxHybridAmplitude.h:92
Herwig::MatchboxHybridAmplitude::needsOLPCorrelators
virtual bool needsOLPCorrelators() const
Return true, if colour and spin correlated matrix elements should be ordered from the OLP...
Definition:
MatchboxHybridAmplitude.h:179
Herwig::MatchboxAmplitude
MatchboxAmplitude is the base class for amplitude implementations inside Matchbox.
Definition:
MatchboxAmplitude.h:108
Herwig::MatchboxHybridAmplitude::oneLoopAmplitude
void oneLoopAmplitude(Ptr< MatchboxAmplitude >::tptr amp)
Set the amplitude object to provide one-loop amplitudes.
Definition:
MatchboxHybridAmplitude.h:68
Herwig::MatchboxHybridAmplitude::treeLevelAmplitude
Ptr< MatchboxAmplitude >::tptr treeLevelAmplitude() const
Return the amplitude object to provide tree-level amplitudes.
Definition:
MatchboxHybridAmplitude.h:53
Herwig::MatchboxHybridAmplitude::oneLoopAmplitudes
virtual bool oneLoopAmplitudes() const
Return true, if one-loop contributions will be evaluated at amplitude level.
Definition:
MatchboxHybridAmplitude.h:402
Herwig::MatchboxHybridAmplitude::flushCaches
virtual void flushCaches()
Flush all cashes.
Definition:
MatchboxHybridAmplitude.h:531
Herwig::MatchboxHybridAmplitude::oneLoopAmplitude
virtual Ptr< MatchboxAmplitude >::tptr oneLoopAmplitude() const
Return the amplitude object to provide one-loop amplitudes.
Definition:
MatchboxHybridAmplitude.h:63
Herwig::MatchboxHybridAmplitude::spinCorrelatedME2
virtual double spinCorrelatedME2(pair< int, int > emitterSpectator, const SpinCorrelationTensor &c) const
Return the spin correlated matrix element.
Definition:
MatchboxHybridAmplitude.h:338
Herwig::MatchboxHybridAmplitude::orderInGs
virtual unsigned int orderInGs() const
Return the (tree-level) order in in which this matrix element is given.
Definition:
MatchboxHybridAmplitude.h:123
Herwig::MatchboxHybridAmplitude::oneLoopInterference
virtual double oneLoopInterference() const
Return the one-loop/tree interference.
Definition:
MatchboxHybridAmplitude.h:509
Herwig::MatchboxHybridAmplitude::colourCorrelatedME2
virtual double colourCorrelatedME2(pair< int, int > ij) const
Return the colour correlated matrix element.
Definition:
MatchboxHybridAmplitude.h:295
ThePEG::cPDVector
vector< cPDPtr > cPDVector
Herwig::MatchboxHybridAmplitude::treeLevelAmplitude
void treeLevelAmplitude(Ptr< MatchboxAmplitude >::tptr amp)
Set the amplitude object to provide tree-level amplitudes.
Definition:
MatchboxHybridAmplitude.h:58
Herwig::MatchboxHybridAmplitude::canFillRhoMatrix
virtual bool canFillRhoMatrix() const
Return true, if this amplitude is capable of consistently filling the rho matrices for the spin corre...
Definition:
MatchboxHybridAmplitude.h:350
Herwig::MatchboxHybridAmplitude::haveOneLoop
virtual bool haveOneLoop() const
Return true, if this amplitude is capable of calculating one-loop (QCD) corrections.
Definition:
MatchboxHybridAmplitude.h:391
Herwig::MatchboxHybridAmplitude::evaluate
virtual Complex evaluate(size_t a, const vector< int > &hel, Complex &largeN)
Evaluate the amplitude for the given colour tensor id and helicity assignment.
Definition:
MatchboxHybridAmplitude.h:373
Herwig::MatchboxHybridAmplitude::makeME
virtual Ptr< MatchboxMEBase >::ptr makeME(const PDVector &p) const
Return a ME instance appropriate for this amplitude and the given subprocesses.
Definition:
MatchboxHybridAmplitude.h:105
ThePEG::Selector
Herwig::MatchboxHybridAmplitude::physicalHelicities
virtual vector< unsigned int > physicalHelicities(const vector< int > &hel) const
Return the helicity combination of the physical process in the conventions used by the spin correlati...
Definition:
MatchboxHybridAmplitude.h:358
Herwig::MatchboxHybridAmplitude::isExternal
virtual bool isExternal() const
Return true, if this amplitude needs to initialize an external code.
Definition:
MatchboxHybridAmplitude.h:196
Herwig::MatchboxHybridAmplitude::setXComb
virtual void setXComb(tStdXCombPtr xc)
Set the xcomb object.
Definition:
MatchboxHybridAmplitude.h:250
Herwig::MatchboxHybridAmplitude::isOLPTree
virtual bool isOLPTree() const
Return true, if this amplitude is handled by a BLHA one-loop provider.
Definition:
MatchboxHybridAmplitude.h:164
Herwig::MatchboxHybridAmplitude::onlyOneLoop
virtual bool onlyOneLoop() const
Return true, if this amplitude only provides one-loop (QCD) corrections.
Definition:
MatchboxHybridAmplitude.h:397
Herwig::MatchboxHybridAmplitude::externalId
virtual int externalId(const cPDVector &proc)
Return a generic process id for the given process.
Definition:
MatchboxHybridAmplitude.h:210
Herwig
-*- C++ -*-
Definition:
BasicConsistency.h:17
Herwig::MatchboxHybridAmplitude::isCS
virtual bool isCS() const
Return true, if one loop corrections are given in the conventions of the integrated dipoles...
Definition:
MatchboxHybridAmplitude.h:431
Herwig::MatchboxHybridAmplitude::orderInGem
virtual unsigned int orderInGem() const
Return the (tree-level) order in in which this matrix element is given.
Definition:
MatchboxHybridAmplitude.h:141
ThePEG::PDVector
vector< PDPtr > PDVector
Herwig::MatchboxHybridAmplitude::orderInGs
virtual void orderInGs(unsigned int n)
Set the (tree-level) order in in which this matrix element should be evaluated.
Definition:
MatchboxHybridAmplitude.h:113
Herwig::MatchboxHybridAmplitude::theTreeLevelAmplitude
Ptr< MatchboxAmplitude >::ptr theTreeLevelAmplitude
The amplitude object to provide tree-level amplitudes.
Definition:
MatchboxHybridAmplitude.h:615
Herwig::MatchboxHybridAmplitude::haveColourFlows
virtual bool haveColourFlows() const
Return true, if the colour basis is capable of assigning colour flows.
Definition:
MatchboxHybridAmplitude.h:230
Herwig::SpinCorrelationTensor
SpinCorrelationTensor represents a spin correlation tensor of the form.
Definition:
SpinCorrelationTensor.h:28
Herwig::MatchboxHybridAmplitude::isDRbar
virtual bool isDRbar() const
Return true, if the amplitude is DRbar renormalized, otherwise MSbar is assumed.
Definition:
MatchboxHybridAmplitude.h:411
Herwig::MatchboxHybridAmplitude::colourGeometries
virtual Selector< const ColourLines * > colourGeometries(tcDiagPtr diag) const
Return a Selector with possible colour geometries for the selected diagram weighted by their relative...
Definition:
MatchboxHybridAmplitude.h:238
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