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diff --git a/MatrixElement/General/GeneralHardME.cc b/MatrixElement/General/GeneralHardME.cc
--- a/MatrixElement/General/GeneralHardME.cc
+++ b/MatrixElement/General/GeneralHardME.cc
@@ -1,1001 +1,1003 @@
// -*- C++ -*-
//
// GeneralHardME.cc is a part of Herwig++ - A multi-purpose Monte Carlo event generator
// Copyright (C) 2002-2011 The Herwig Collaboration
//
// Herwig++ is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
//
// This is the implementation of the non-inlined, non-templated member
// functions of the GeneralHardME class.
//
#include "GeneralHardME.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/MatrixElement/Tree2toNDiagram.h"
#include "ThePEG/Utilities/EnumIO.h"
#include "ThePEG/PDF/PolarizedBeamParticleData.h"
#include <numeric>
using namespace Herwig;
GeneralHardME::GeneralHardME() : incoming_(0, 0), outgoing_(0, 0),
diagrams_(0), numberOfDiagrams_(0),
colour_(0), numberOfFlows_(0) ,
debug_(false), scaleChoice_(0),
scaleFactor_(1.) {
massOption(vector<unsigned int>(2,1));
}
void GeneralHardME::setProcessInfo(const vector<HPDiagram> & alldiagrams,
ColourStructure colour,
bool debug, unsigned int scaleOption,
double scaleFactor) {
// external particles
incoming_ = alldiagrams.at(0).incoming;
outgoing_ = alldiagrams.at(0).outgoing;
diagrams_ = alldiagrams;
numberOfDiagrams_ = alldiagrams.size();
// debug option
debug_ = debug;
// scale choice
scaleChoice_ = scaleOption;
scaleFactor_ = scaleFactor;
// OffShell options
pair<bool, bool> offshell(make_pair(false, false));
vector<unsigned int> mopt(2,1);
if( getParticleData(outgoing_.first )->widthGenerator() ||
getParticleData(outgoing_.first )-> massGenerator()) {
offshell.first = true;
mopt[0] = 2;
}
if( getParticleData(outgoing_.second)->widthGenerator() ||
getParticleData(outgoing_.second)-> massGenerator() ) {
offshell.second = true;
mopt[1] = 2;
}
if(outgoing_.first == incoming_.first ||
outgoing_.first == incoming_.second )
mopt[0] = 0;
if(outgoing_.second == incoming_.first ||
outgoing_.second == incoming_.second )
mopt[1] = 0;
massOption(mopt);
if( offshell.first == true && offshell.second == true &&
abs(outgoing_.first) == abs(outgoing_.second) )
rescalingOption(3);
// colour structure
colourStructure_ = colour;
switch (colour) {
// colour neutral process
case Colour11to11:
colour_ = vector<DVector>(1,DVector(1,1.));
numberOfFlows_ = 1;
break;
// colour neutral -> 3 3bar or swap process
case Colour11to33bar: case Colour33barto11:
colour_ = vector<DVector>(1,DVector(1,3.));
numberOfFlows_ = 1;
break;
// colour neutral -> 8 8 process or swap
case Colour11to88: case Colour88to11 :
colour_ = vector<DVector>(1,DVector(1,8.));
numberOfFlows_ = 1;
break;
// colour 33 -> 33 or 3bar3bar -> 3bar3bar process
// or colour 33bar -> 33bar
case Colour33to33: case Colour3bar3barto3bar3bar:
case Colour33barto33bar:
colour_ = vector<DVector>(6, DVector(6, 0.));
colour_[0][0] = colour_[1][1] = 2.;
colour_[2][2] = colour_[3][3] = 9.;
colour_[0][1] = colour_[1][0] = -2./3.;
colour_[0][2] = colour_[2][0] = 0.;
colour_[0][3] = colour_[3][0] = 4.;
colour_[1][2] = colour_[2][1] = 4.;
colour_[1][3] = colour_[3][1] = 0.;
colour_[2][3] = colour_[3][2] = 3.;
numberOfFlows_ = 4;
break;
// colour 3 3bar -> 6 6bar
case Colour33barto66bar: case Colour33barto6bar6:
colour_ = vector<DVector>(8, DVector(8, 0.));
// diagonals
for(unsigned int ix=0;ix<4;++ix){
colour_[ix][ix] = 1.5;
colour_[ix+4][ix+4] = 27./16.;
}
colour_[0][1] = colour_[1][0] = 0.5;
colour_[0][2] = colour_[2][0] = 0.5;
colour_[0][3] = colour_[3][0] = 0.;
colour_[0][4] = colour_[4][0] = 3./8.;
colour_[0][5] = colour_[5][0] = 1./8.;
colour_[0][6] = colour_[6][0] = 1./8.;
colour_[0][7] = colour_[7][0] = 0.;
// 1
colour_[1][2] = colour_[2][1] = 0.;
colour_[1][3] = colour_[3][1] = 0.5;
colour_[1][4] = colour_[4][1] = 1./8.;
colour_[1][5] = colour_[5][1] = 3./8.;
colour_[1][6] = colour_[6][1] = 0.;
colour_[1][7] = colour_[7][1] = 1./8.;
// 2
colour_[2][3] = colour_[3][2] = 0.5;
colour_[2][4] = colour_[4][2] = 1./8.;
colour_[2][5] = colour_[5][2] = 0.;
colour_[2][6] = colour_[6][2] = 3./8.;
colour_[2][7] = colour_[7][2] = 1./8.;
// 3
colour_[3][4] = colour_[4][3] = 0.;
colour_[3][5] = colour_[5][3] = 1./8.;
colour_[3][6] = colour_[6][3] = 1./8.;
colour_[3][7] = colour_[7][3] = 3./8.;
// 4
colour_[4][5] = colour_[5][4] = 9./16.;
colour_[4][6] = colour_[6][4] = 9./16.;
colour_[4][7] = colour_[7][4] = 3./16.;
// 5
colour_[5][6] = colour_[6][5] = 3./16.;
colour_[5][7] = colour_[7][5] = 9./16.;
//6
colour_[6][7] = colour_[7][6] = 9./16.;
numberOfFlows_ = 8;
break;
// colour 33bar -> 88, 88 -> 33bar
case Colour33barto88: case Colour88to33bar:
case Colour38to83: case Colour38to38:
case Colour3bar8to83bar: case Colour3bar8to3bar8:
colour_ = vector<DVector>(3, DVector(3, 0.));
colour_[0][0] = colour_[1][1] = 16./3.;
colour_[0][1] = colour_[1][0] = -2./3.;
colour_[2][2]=24.;
colour_[0][2] = colour_[2][0] = 4.;
colour_[1][2] = colour_[2][1] = 4.;
numberOfFlows_ = 3;
break;
case Colour88to88:
colour_ = vector<DVector>(6, DVector(6, 0.));
colour_[0][0] = colour_[1][1] = colour_[2][2]=92./3.;
colour_[0][1] = colour_[1][0] = -16./3.;
colour_[0][2] = colour_[2][0] = -16./3.;
colour_[2][1] = colour_[1][2] = -16./3.;
colour_[0][3] = colour_[3][0] = 64./3.;
colour_[0][4] = colour_[4][0] = 64./3.;
colour_[0][5] = colour_[5][0] = - 8./3.;
colour_[1][3] = colour_[3][1] = - 8./3.;
colour_[1][4] = colour_[4][1] = 64./3.;
colour_[1][5] = colour_[5][1] = 64./3.;
colour_[2][3] = colour_[3][2] = 64./3.;
colour_[2][4] = colour_[4][2] = - 8./3.;
colour_[2][5] = colour_[5][2] = 64./3.;
colour_[3][3] = colour_[4][4] = colour_[5][5] = 64.;
colour_[3][4] = colour_[4][3] = 8.;
colour_[3][5] = colour_[5][3] = 8.;
colour_[4][5] = colour_[5][4] = 8.;
numberOfFlows_ = 6;
break;
case Colour33barto18 : case Colour33barto81 :
case Colour38to13 : case Colour38to31 :
case Colour3bar8to13bar: case Colour3bar8to3bar1:
colour_ = vector<DVector>(1,DVector(1,4.));
numberOfFlows_ = 1;
break;
case Colour88to18 : case Colour88to81:
colour_ = vector<DVector>(1,DVector(1,24.));
numberOfFlows_ = 1;
break;
case Colour88to66bar:
colour_ = vector<DVector>(12, DVector(12, 0.));
// diagonals
for(unsigned int ix=0;ix<12;++ix) colour_[ix][ix] = 4.;
// 1 1 block
colour_[ 0][ 1] = colour_[ 1][ 0] = 4./3.;
colour_[ 0][ 2] = colour_[ 2][ 0] = 4./3.;
colour_[ 0][ 3] = colour_[ 3][ 0] = 0.5 ;
colour_[ 1][ 2] = colour_[ 2][ 1] = 0.5 ;
colour_[ 1][ 3] = colour_[ 3][ 1] = 4./3.;
colour_[ 2][ 3] = colour_[ 3][2] = 4./3.;
// 1 2 and 2 1 blocks
colour_[ 0][ 4] = colour_[ 4][ 0] = 4./3.;
colour_[ 1][ 5] = colour_[ 5][ 1] = 4./3.;
colour_[ 2][ 6] = colour_[ 6][ 2] = 4./3.;
colour_[ 3][ 7] = colour_[ 7][ 3] = 4./3.;
colour_[ 0][ 7] = colour_[ 7][ 0] = -1./6.;
colour_[ 1][ 6] = colour_[ 6][ 1] = -1./6.;
colour_[ 2][ 5] = colour_[ 5][ 2] = -1./6.;
colour_[ 3][ 4] = colour_[ 4][ 3] = -1./6.;
// 1 3 and 3 1 blocks
colour_[ 0][11] = colour_[11][ 0] = 4./3.;
colour_[ 1][10] = colour_[10][ 1] = 4./3.;
colour_[ 2][ 9] = colour_[ 9][ 2] = 4./3.;
colour_[ 3][ 8] = colour_[ 8][ 3] = 4./3.;
colour_[ 0][ 8] = colour_[ 8][ 0] = -1./6.;
colour_[ 1][ 9] = colour_[ 9][ 1] = -1./6.;
colour_[ 2][10] = colour_[10][ 2] = -1./6.;
colour_[ 3][11] = colour_[11][ 3] = -1./6.;
// 2 2 block
colour_[ 4][ 5] = colour_[ 5][ 4] = 4./3.;
colour_[ 4][ 6] = colour_[ 6][ 4] = 4./3.;
colour_[ 4][ 7] = colour_[ 7][ 4] = 0.5 ;
colour_[ 5][ 6] = colour_[ 6][ 5] = 0.5 ;
colour_[ 5][ 7] = colour_[ 7][ 5] = 4./3.;
colour_[ 6][ 7] = colour_[ 7][ 6] = 4./3.;
// 2 3 and 3 2 blocks
colour_[ 4][ 8] = colour_[ 8][ 4] = -0.5 ;
colour_[ 4][ 9] = colour_[ 9][ 4] = -1./6.;
colour_[ 4][10] = colour_[10][ 4] = -1./6.;
colour_[ 4][11] = colour_[11][ 4] = 0.5 ;
colour_[ 5][ 8] = colour_[ 8][ 5] = -1./6.;
colour_[ 5][ 9] = colour_[ 9][ 5] = -0.5 ;
colour_[ 5][10] = colour_[10][ 5] = 0.5 ;
colour_[ 5][11] = colour_[11][ 5] = -1./6.;
colour_[ 6][ 8] = colour_[ 8][ 6] = -1./6.;
colour_[ 6][ 9] = colour_[ 9][ 6] = 0.5 ;
colour_[ 6][10] = colour_[10][ 6] = -0.5 ;
colour_[ 6][11] = colour_[11][ 6] = -1./6.;
colour_[ 7][ 8] = colour_[ 8][ 7] = 0.5 ;
colour_[ 7][ 9] = colour_[ 9][ 7] = -1./6.;
colour_[ 7][10] = colour_[10][ 7] = -1./6.;
colour_[ 7][11] = colour_[11][ 7] = -0.5 ;
// 3 3 block
colour_[ 8][ 9] = colour_[ 9][ 8] = 4./3.;
colour_[ 8][10] = colour_[10][ 8] = 4./3.;
colour_[ 8][11] = colour_[11][ 8] = 0.5 ;
colour_[ 9][10] = colour_[10][ 9] = 0.5 ;
colour_[ 9][11] = colour_[11][ 9] = 4./3.;
colour_[10][11] = colour_[11][10] = 4./3.;
numberOfFlows_ = 12;
break;
case Colour33to61: case Colour33to16:
case Colour3bar3barto6bar1: case Colour3bar3barto16bar:
colour_ = vector<DVector>(2, DVector(2, 0.));
colour_[1][1] = colour_[0][0] = 9./4.;
colour_[0][1] = colour_[1][0] = 3./4.;
numberOfFlows_ = 2;
break;
case Colour38to3bar6: case Colour38to63bar:
colour_ = vector<DVector>(8, DVector(8, 0.));
// diagonals
for(unsigned int ix=0;ix<8;++ix) colour_[ix][ix] = 3.;
colour_[0][1] = colour_[1][0] = 1.;
colour_[0][2] = colour_[2][0] = 1.;
colour_[0][3] = colour_[3][0] = 0.;
colour_[0][4] = colour_[4][0] = 1.;
colour_[0][5] = colour_[5][0] = 3.;
colour_[0][6] = colour_[6][0] = 1.;
colour_[0][7] = colour_[7][0] = 0.;
// 1
colour_[1][2] = colour_[2][1] = 0.;
colour_[1][3] = colour_[3][1] = 1.;
colour_[1][4] = colour_[4][1] = 3.;
colour_[1][5] = colour_[5][1] = 1.;
colour_[1][6] = colour_[6][1] = 0.;
colour_[1][7] = colour_[7][1] = 1.;
// 2
colour_[2][3] = colour_[3][2] = 1.;
colour_[2][4] = colour_[4][2] = 0.;
colour_[2][5] = colour_[5][2] = 1.;
colour_[2][6] = colour_[6][2] = 3.;
colour_[2][7] = colour_[7][2] = 1.;
// 3
colour_[3][4] = colour_[4][3] = 1.;
colour_[3][5] = colour_[5][3] = 0.;
colour_[3][6] = colour_[6][3] = 1.;
colour_[3][7] = colour_[7][3] = 3.;
// 4
colour_[4][5] = colour_[5][4] = 1.;
colour_[4][6] = colour_[6][4] = 0.;
colour_[4][7] = colour_[7][4] = 1.;
// 5
colour_[5][6] = colour_[6][5] = 1.;
colour_[5][7] = colour_[7][5] = 0.;
//6
colour_[6][7] = colour_[7][6] = 1.;
numberOfFlows_ = 8;
break;
default:
assert(false);
}
}
void GeneralHardME::getDiagrams() const {
//get ParticleData pointers for external particles
tcPDPtr ina = getParticleData(getIncoming().first);
tcPDPtr inb = getParticleData(getIncoming().second);
tcPDPtr outa = getParticleData(getOutgoing().first);
tcPDPtr outb = getParticleData(getOutgoing().second);
for(HPCount idx = 0; idx < numberOfDiagrams_; ++idx) {
const HPDiagram & current = getProcessInfo()[idx];
tcPDPtr offshell = current.intermediate;
if(!offshell) continue;
//t-channel
if(current.channelType == HPDiagram::tChannel) {
if(offshell->id() < 0) offshell = offshell->CC();
if(current.ordered.second)
add(new_ptr((Tree2toNDiagram(3), ina, offshell,
inb, 1, outa, 2, outb, -(idx+1))));
else
add(new_ptr((Tree2toNDiagram(3), ina, offshell,
inb, 2, outa, 1, outb, -(idx+1))));
}
//s-channel
else if(current.channelType == HPDiagram::sChannel)
add(new_ptr((Tree2toNDiagram(2), ina, inb, 1, offshell,
3, outa, 3, outb, -(idx+1))));
else
throw MEException() << "getDiagrams() - Unknown diagram in matrix element "
<< fullName() << Exception::runerror;
}
}
unsigned int GeneralHardME::orderInAlphaS() const {
unsigned int order(0);
for(HPCount idx = 0; idx < numberOfDiagrams_; ++idx) {
unsigned int tOrder = diagrams_[idx].vertices.first->orderInGs() +
diagrams_[idx].vertices.second->orderInGs();
if(tOrder > order) order = tOrder;
}
return order;
}
unsigned int GeneralHardME::orderInAlphaEW() const {
unsigned int order(0);
for(HPCount idx = 0; idx < numberOfDiagrams_; ++idx) {
unsigned int tOrder = diagrams_[idx].vertices.first->orderInGem() +
diagrams_[idx].vertices.second->orderInGem();
if(tOrder > order) order = tOrder;
}
return order;
}
Selector<MEBase::DiagramIndex>
GeneralHardME::diagrams(const DiagramVector & diags) const {
Selector<DiagramIndex> sel;
for ( DiagramIndex i = 0; i < diags.size(); ++i ) {
if(abs(diags[i]->id()) == int(diagram_+1)) sel.insert(1., i);
}
return sel;
}
void GeneralHardME::persistentOutput(PersistentOStream & os) const {
os << incoming_ << outgoing_ << diagrams_ << colour_ << oenum(colourStructure_)
<< numberOfDiagrams_ << numberOfFlows_ << debug_
<< scaleChoice_ << scaleFactor_;
}
void GeneralHardME::persistentInput(PersistentIStream & is, int) {
is >> incoming_ >> outgoing_ >> diagrams_ >> colour_ >> ienum(colourStructure_)
>> numberOfDiagrams_ >> numberOfFlows_ >> debug_
>> scaleChoice_ >> scaleFactor_;
}
AbstractClassDescription<GeneralHardME> GeneralHardME::initGeneralHardME;
// Definition of the static class description member.
void GeneralHardME::Init() {
static ClassDocumentation<GeneralHardME> documentation
("This class is designed to be a base class for a specific spin "
"configuration where no matrix element exists, i.e. when processes "
"are created automaticlly for a different model.");
}
Selector<const ColourLines *>
GeneralHardME::colourGeometries(tcDiagPtr diag) const {
// get the current diagram
const HPDiagram & current = getProcessInfo()[abs(diag->id()) - 1];
Selector<const ColourLines *> sel;
switch(colourStructure_) {
case Colour11to11:
static ColourLines f11to11("");
sel.insert(1.,&f11to11);
break;
case Colour11to33bar:
static ColourLines f11to33bar[2]={ColourLines("4 -5"),
ColourLines("4 2 -5")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f11to33bar[1]);
else
sel.insert(1.,&f11to33bar[0]);
break;
case Colour11to88:
static ColourLines f11to88[2]={ColourLines("4 -5, 5 -4"),
ColourLines("4 2 -5,5 -2 4")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f11to88[1]);
else
sel.insert(1.,&f11to88[0]);
break;
case Colour33to33:
static ColourLines f33to33[4]={ColourLines("1 2 5, 3 -2 4"),
ColourLines("1 2 4, 3 -2 5"),
ColourLines("1 4, 3 5"),
ColourLines("1 5, 3 4")};
static ColourLines f33to33s[4]={ColourLines("1 3:1 4, 2 3:2 5"),
ColourLines("1 3:2 4, 2 3:1 5"),
ColourLines("1 3:1 5, 2 3:2 4"),
ColourLines("1 3:2 5, 2 3:1 4")};
if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,current.ordered.second ? &f33to33[0] : &f33to33[1]);
else if(current.intermediate->iColour() == PDT::Colour6) {
sel.insert(1., &f33to33s[2*(flow_-2)+UseRandom::irnd(0,2)]);
}
else
sel.insert(1.,current.ordered.second ? &f33to33[2] : &f33to33[3]);
break;
case Colour3bar3barto3bar3bar:
static ColourLines
f3bar3barto3bar3bar[4]={ColourLines("-1 -2 -5, -3 2 -4"),
ColourLines("-1 -2 -4, -3 2 -5"),
ColourLines("-1 -4, -3 -5"),
ColourLines("-1 -5, -3 -4")};
static ColourLines f3bar3barto3bar3bars[2]
={ColourLines("-1 -3:1 -4, -2 -3:2 -5"),
ColourLines("-1 -3:2 -4, -2 -3:1 -5")};
if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,current.ordered.second ?
&f3bar3barto3bar3bar[0] : &f3bar3barto3bar3bar[1]);
else if(current.intermediate->iColour() == PDT::Colour6bar) {
sel.insert(1., &f3bar3barto3bar3bars[flow_]);
}
else
sel.insert(1.,current.ordered.second ?
&f3bar3barto3bar3bar[2] : &f3bar3barto3bar3bar[3]);
break;
case Colour33barto33bar:
static ColourLines
f33barto33bar[4]={ColourLines("1 2 -3, 4 -2 -5"),
ColourLines("1 3 4, -2 -3 -5"),
ColourLines("1 4, -3 -5"),
ColourLines("1 -2, 4 -5")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,current.intermediate->iColour() == PDT::Colour8 ?
&f33barto33bar[0] : &f33barto33bar[2]);
else
sel.insert(1.,current.intermediate->iColour() == PDT::Colour8 ?
&f33barto33bar[1] : &f33barto33bar[3]);
break;
case Colour33barto11:
static ColourLines f33barto11[2]={ColourLines("1 -2"),
ColourLines("1 2 -3")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f33barto11[1]);
else
sel.insert(1.,&f33barto11[0]);
break;
case Colour33barto88:
static ColourLines f33barto88[5]={ColourLines("1 4, -4 2 5, -5 -3"),
ColourLines("1 5, -5 2 4, -4 -3"),
ColourLines("1 3 4, -5 -3 -2, -4 5"),
ColourLines("1 3 5, -4 -3 -2, -5 4"),
ColourLines("1 -2,4 -5, 5 -4")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,current.ordered.second ? &f33barto88[0] : &f33barto88[1]);
else if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,&f33barto88[flow_+2]);
else
sel.insert(1.,&f33barto88[4]);
break;
case Colour33barto18:
static ColourLines f33barto18[3]={ColourLines("1 2 5, -3 -5"),
ColourLines("1 5, -5 2 -3"),
ColourLines("1 3 5,-2 -3 -5")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,current.ordered.second ? &f33barto18[0] : &f33barto18[1]);
else
sel.insert(1.,&f33barto18[2]);
break;
case Colour33barto81:
static ColourLines f33barto81[3]={ColourLines("1 4, -4 2 -3"),
ColourLines("-3 -4, 1 2 4"),
ColourLines("1 3 4,-2 -3 -4")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,current.ordered.second ? &f33barto81[0] : &f33barto81[1]);
else
sel.insert(1.,&f33barto81[2]);
break;
case Colour88to11:
static ColourLines f88barto11[2]={ColourLines("1 -2, 2 -1"),
ColourLines("1 -2 -3, 3 2 -1")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f88barto11[1]);
else
sel.insert(1.,&f88barto11[0]);
break;
case Colour88to33bar:
static ColourLines f88to33bar[5]={ColourLines("1 4, -3 -5, 3 2 -1"),
ColourLines("-1 -5, 1 2 -3, 3 4"),
ColourLines("2 -1, 1 3 4, -2 -3 -5"),
ColourLines("1 -2, -1 -3 -5, 2 3 4"),
ColourLines("1 -2, 2 -1, 4 -5")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,current.ordered.second ? &f88to33bar[0] : &f88to33bar[1]);
else if(current.intermediate->iColour() == PDT::Colour8 )
sel.insert(1.,&f88to33bar[flow_+2]);
else
sel.insert(1.,&f88to33bar[4]);
break;
case Colour88to88:
static ColourLines f88to88[15]={ColourLines("1 -2, -1 -3 -4, 4 -5, 2 3 5"),
ColourLines("-1 2, 1 3 4, -4 5, -2 -3 -5"),
ColourLines("1 -2, -1 -3 -5, 5 -4, 2 3 4"),
ColourLines("-1 2, 1 3 5, -5 4, -2 -3 -4"),
ColourLines("1 4, -1 -2 3, -3 -5, -4 2 5"),
ColourLines("-1 -4, 1 2 -3, 3 5, 4 -2 -5"),
ColourLines("1 4, -1 -2 -5, 3 5, -3 2 -4"),
ColourLines("-1 -4, 1 2 5, -3 -5, 3 -2 4"),
ColourLines("1 5, -1 -2 3, -3 -4, -5 2 4"),
ColourLines("-1 -5, 1 2 -3, 3 4, 5 -2 -4"),
ColourLines("1 5, -1 -2 -4, 3 4, -3 2 -5"),
ColourLines("-1 -5, 1 2 4, -3 -4, 3 -2 5"),
ColourLines("1 -2, 2 -1, 4 -5, 5 -4"),
ColourLines("1 4, -1 -4, 3 5, -5 -3"),
ColourLines("1 5, -1 -5, 3 4, -3 -4")};
if(current.channelType == HPDiagram::sChannel) {
if(current.intermediate->iColour() == PDT::Colour8) {
if(flow_==0) {
sel.insert(0.5, &f88to88[0]);
sel.insert(0.5, &f88to88[1]);
}
else if(flow_==2) {
sel.insert(0.5, &f88to88[2]);
sel.insert(0.5, &f88to88[3]);
}
else
assert(false);
}
else {
sel.insert(1., &f88to88[12]);
}
}
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second) {
if(current.intermediate->iColour() == PDT::Colour8) {
if(flow_==0) {
sel.insert(0.25, &f88to88[4]);
sel.insert(0.25, &f88to88[5]);
}
else if(flow_==1) {
sel.insert(0.25, &f88to88[6]);
sel.insert(0.25, &f88to88[7]);
}
else
assert(false);
}
else
sel.insert(1., &f88to88[13]);
}
else {
if(current.intermediate->iColour() == PDT::Colour8) {
if(flow_==2) {
sel.insert(0.25, &f88to88[8]);
sel.insert(0.25, &f88to88[9]);
}
else if(flow_==1) {
sel.insert(0.25, &f88to88[10]);
sel.insert(0.25, &f88to88[11]);
}
else
assert(false);
}
else
sel.insert(1., &f88to88[14]);
}
}
break;
case Colour38to13:
static ColourLines f38to13[2]={ColourLines("1 2 -3, 3 5"),
- ColourLines("1-2, 2 3 5" )};
- if(current.channelType == HPDiagram::tChannel)
+ ColourLines("1 -2, 2 3 5")};
+ if(current.channelType == HPDiagram::tChannel) {
sel.insert(1.,&f38to13[0]);
- else
+ }
+ else {
sel.insert(1.,&f38to13[1]);
+ }
break;
case Colour38to31:
static ColourLines f38to31[2]={ColourLines("1 2 -3, 3 4"),
- ColourLines("1-2, 2 3 4 ")};
+ ColourLines("1 -2, 2 3 4 ")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f38to31[0]);
else
sel.insert(1.,&f38to31[1]);
break;
case Colour3bar8to13bar:
static ColourLines f3bar8to13bar[2]={ColourLines("-1 2 3, -3 -5 "),
ColourLines("-1 2, -5 -3 -2")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f3bar8to13bar[0]);
else
sel.insert(1.,&f3bar8to13bar[1]);
break;
case Colour3bar8to3bar1:
static ColourLines f3bar8to3bar1[2]={ColourLines("-1 2 3, -3 -4 "),
ColourLines("-1 2, -4 -3 -2")};
if(current.channelType == HPDiagram::tChannel)
sel.insert(1.,&f3bar8to3bar1[0]);
else
sel.insert(1.,&f3bar8to3bar1[1]);
break;
case Colour38to83:
static ColourLines f38to83[4]={ColourLines("1 4, -4 2 -3, 3 5"),
ColourLines("1 -2, 2 3 4, 5 -4"),
ColourLines("1 2 4, -4 -3, 3 -2 5"),
ColourLines("1 2 -3, -4 -2 5, 3 4")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f38to83[1]);
else {
if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,&f38to83[flow_+2]);
else
sel.insert(1.,&f38to83[0]);
}
break;
case Colour38to38:
static ColourLines f38to38[4]={ColourLines("1 5, -5 2 -3, 3 4"),
ColourLines("1 -2, 2 3 5, 4 -5"),
ColourLines("1 2 5, -5 -3, 3 -2 4"),
ColourLines("1 2 -3, -5 -2 4, 3 5")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f38to38[1]);
else {
if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,&f38to38[flow_+2]);
else
sel.insert(1.,&f38to38[0]);
}
break;
case Colour3bar8to83bar:
static ColourLines f3bar8to83bar[4]={ColourLines("-1 -4, 3 2 4, -3 -5"),
ColourLines("-1 2, -4 -3 -2, 4 -5"),
ColourLines("-1 -2 -4,-3 2 -5,3 4"),
ColourLines("-1 -2 3, -5 2 4, -3 -4")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f3bar8to83bar[1]);
else {
if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,&f3bar8to83bar[flow_+2]);
else
sel.insert(1.,&f3bar8to83bar[0]);
}
break;
case Colour3bar8to3bar8:
static ColourLines f3bar8to3bar8[4]={ColourLines("-1 -5, 3 2 5, -3 -4"),
ColourLines("-1 2, -5 -3 -2, 5 -4"),
ColourLines("-1 -2 -5,-3 2 -4,3 5"),
ColourLines("-1 -2 3, -4 2 5, -3 -5")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f3bar8to3bar8[1]);
else {
if(current.intermediate->iColour() == PDT::Colour8)
sel.insert(1.,&f3bar8to3bar8[flow_+2]);
else
sel.insert(1.,&f3bar8to3bar8[0]);
}
break;
case Colour88to18:
static ColourLines f88to18[6]={ColourLines(" 1 3 5, -1 2, -2 -3 -5"),
ColourLines(" -1 -3 -5, 1 -2, 2 3 5"),
ColourLines(" 1 2 -3, -1 -2 -5, 3 5"),
ColourLines("-1 -2 3, 1 2 5, -3 -5"),
ColourLines(" 1 5, -1 2 3, -3 -2 -5"),
ColourLines("-1 -5, 1 -2 -3, 3 2 5")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f88to18[UseRandom::irnd(0,2)]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1.,&f88to18[UseRandom::irnd(2,4)]);
else
sel.insert(1.,&f88to18[UseRandom::irnd(4,6)]);
}
break;
case Colour88to81:
static ColourLines f88to81[6]={ColourLines(" 1 3 4, -1 2, -2 -3 -4"),
ColourLines(" -1 -3 -4, 1 -2, 2 3 4"),
ColourLines(" 1 4, -1 2 3, -3 -2 -4"),
ColourLines(" -1 -4, 1 -2 -3, 3 2 4"),
ColourLines(" 1 2 -3, -1 -2 -4, 3 4"),
ColourLines(" -1 -2 3, 1 2 4, -3 -4")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f88to81[UseRandom::irnd(0,2)]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1.,&f88to81[UseRandom::irnd(2,4)]);
else
sel.insert(1.,&f88to81[UseRandom::irnd(4,6)]);
}
break;
case Colour33barto66bar:
static ColourLines f33barto66bars[8]
={ColourLines("1 3 4:1, -2 -3 -5:1, 4:2 -5:2"),
ColourLines("1 3 4:1, -2 -3 -5:2, 4:2 -5:1"),
ColourLines("1 3 4:2, -2 -3 -5:1, 4:1 -5:2"),
ColourLines("1 3 4:2, -2 -3 -5:2, 4:1 -5:1"),
ColourLines(""), ColourLines(""),
ColourLines(""), ColourLines(""),};
static ColourLines f33barto66bart[8]
={ColourLines(""), ColourLines(""),
ColourLines(""), ColourLines(""),
ColourLines("1 4:1, 4:2 2 -5:1, -3 -5:2"),
ColourLines("1 4:1, 4:2 2 -5:2, -3 -5:1"),
ColourLines("1 4:2, 4:1 2 -5:1, -3 -5:2"),
ColourLines("1 4:2, 4:1 2 -5:2, -3 -5:1")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f33barto66bars[flow_]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1.,&f33barto66bart[flow_]);
else
assert(false);
}
break;
case Colour33barto6bar6:
static ColourLines f33barto6bar6s[8]
={ColourLines("1 3 5:1, -2 -3 -4:1, -4:2 5:2"),
ColourLines("1 3 5:1, -2 -3 -4:2, -4:1 5:2"),
ColourLines("1 3 5:2, -2 -3 -4:1, -4:2 5:1"),
ColourLines("1 3 5:2, -2 -3 -4:2, -4:1 5:1"),
ColourLines(""), ColourLines(""),
ColourLines(""), ColourLines("")};
static ColourLines f33barto6bar6u[8]
={ColourLines(""), ColourLines(""),
ColourLines(""), ColourLines(""),
ColourLines("1 5:1, 5:2 2 -4:1, -3 -4:2"),
ColourLines("1 5:1, 5:2 2 -4:2, -3 -4:1"),
ColourLines("1 5:2, 5:1 2 -4:1, -3 -4:2"),
ColourLines("1 5:2, 5:1 2 -4:2, -3 -4:1")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1.,&f33barto6bar6s[flow_]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
assert(false);
else
sel.insert(1.,&f33barto6bar6u[flow_]);
}
break;
case Colour88to66bar:
static ColourLines f88to66t[12]=
{ColourLines("1 4:2, 4:1 2:1 3, -1 2:2 -5:2, -3 -5:1"),
ColourLines("1 4:1, 4:2 2:2 3, -1 2:1 -5:2, -3 -5:1"),
ColourLines("1 4:2, 4:1 2:1 3, -1 2:2 -5:1, -3 -5:2"),
ColourLines("1 4:1, 4:2 2:2 3, -1 2:1 -5:1, -3 -5:2"),
ColourLines("1 4:2, 4:1 2:2 -5:2, -1 2:1 3, -3 -5:1"),
ColourLines("1 4:1, 4:2 2:2 -5:2, -1 2:1 3, -3 -5:1"),
ColourLines("1 4:2, 4:1 2:2 -5:1, -1 2:1 3, -3 -5:2"),
ColourLines("1 4:1, 4:2 2:2 -5:1, -1 2:1 3, -3 -5:2"),
ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines("")};
static ColourLines f88to66u[12]=
{ColourLines("1 2:2 4:2, 4:1 3, -1 -5:2, -3 2:1 -5:1"),
ColourLines("1 2:1 4:1, 4:2 3, -1 -5:2, -3 2:2 -5:1"),
ColourLines("1 2:2 4:2, 4:1 3, -1 -5:1, -3 2:1 -5:2"),
ColourLines("1 2:1 4:1, 4:2 3, -1 -5:1, -3 2:2 -5:2"),
ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines("-1 -5:1, -5:2 2:2 4:1, 1 2:1 -3, 3 4:2"),
ColourLines("-1 -5:1, -5:2 2:2 4:2, 1 2:1 -3, 3 4:1"),
ColourLines("-1 -5:2, -5:1 2:2 4:1, 1 2:1 -3, 3 4:2"),
ColourLines("-1 -5:2, -5:1 2:2 4:2, 1 2:1 -3, 3 4:1")};
static ColourLines f88to66s[12]=
{ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines("1 3 4:2, 4:1 -5:2, -1 2, -2 -3 -5:1"),
ColourLines("1 3 4:1, 4:2 -5:2, -1 2, -2 -3 -5:1"),
ColourLines("1 3 4:2, 4:1 -5:1, -1 2, -2 -3 -5:2"),
ColourLines("1 3 4:1, 4:2 -5:1, -1 2, -2 -3 -5:2"),
ColourLines("-1 -3 -5:1, -5:2 4:1, 1 -2, 2 3 4:2"),
ColourLines("-1 -3 -5:1, -5:2 4:2, 1 -2, 2 3 4:1"),
ColourLines("-1 -3 -5:2, -5:1 4:1, 1 -2, 2 3 4:2"),
ColourLines("-1 -3 -5:2, -5:1 4:2, 1 -2, 2 3 4:1")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1., &f88to66s[flow_]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second) {
sel.insert(1., &f88to66t[flow_]);
}
else {
sel.insert(1., &f88to66u[flow_]);
}
}
break;
case Colour33to61:
static ColourLines f33to61t[2]
={ColourLines("1 4:1, 3 2 4:2"),
ColourLines("1 4:2, 3 2 4:1")};
static ColourLines f33to61u[2]
={ColourLines("1 2 4:1, 3 4:2"),
ColourLines("1 2 4:2, 3 4:1")};
if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1., &f33to61t[flow_]);
else
sel.insert(1., &f33to61u[flow_]);
}
else
assert(false);
break;
case Colour33to16:
static ColourLines f33to16t[2]
={ColourLines("1 2 5:1, 3 5:2"),
ColourLines("1 2 5:2, 3 5:1")};
static ColourLines f33to16u[2]
={ColourLines("1 5:1, 3 2 5:2"),
ColourLines("1 5:2, 3 2 5:1")};
if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1., &f33to16t[flow_]);
else
sel.insert(1., &f33to16u[flow_]);
}
else
assert(false);
break;
case Colour3bar3barto6bar1:
static ColourLines f3bar3barto6bar1t[2]
={ColourLines("-1 -4:1, -3 -2 -4:2"),
ColourLines("-1 -4:2, -3 -2 -4:1")};
static ColourLines f3bar3barto6bar1u[2]
={ColourLines("-1 -2 -4:1, -3 -4:2"),
ColourLines("-1 -2 -4:2, -3 -4:1")};
if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1., &f3bar3barto6bar1t[flow_]);
else
sel.insert(1., &f3bar3barto6bar1u[flow_]);
}
break;
case Colour3bar3barto16bar:
static ColourLines f3bar3barto16bart[2]
={ColourLines("-1 -2 -5:1, -3 -5:2"),
ColourLines("-1 -2 -5:2, -3 -5:1")};
static ColourLines f3bar3barto16baru[2]
={ColourLines("-1 -5:1, -3 -2 -5:2"),
ColourLines("-1 -5:2, -3 -2 -5:1")};
if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1., &f3bar3barto16bart[flow_]);
else
sel.insert(1., &f3bar3barto16baru[flow_]);
}
break;
case Colour38to3bar6:
static ColourLines f38to3bar6t[8]
={ColourLines("1 2:1 -3, -4 2:2 5:1, 3 5:2"),
ColourLines("1 2:1 -3, -4 2:2 5:2, 3 5:1"),
ColourLines("1 2:1 5:1, -4 2:2 -3, 3 5:2"),
ColourLines("1 2:1 5:2, -4 2:2 -3, 3 5:1"),
ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines("")};
static ColourLines f38to3bar6u[8]
={ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines("1 5:1, 3 2 5:2, -4 -3"),
ColourLines("1 5:2, 3 2 5:1, -4 -3"),
ColourLines(""),ColourLines("")};
static ColourLines f38to3bar6s[8]
={ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines("1 -2, 2 3 5:1, -4 5:2"),
ColourLines("1 -2, 2 3 5:2, -4 5:1")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1., &f38to3bar6s[flow_]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1., &f38to3bar6t[flow_]);
else
sel.insert(1., &f38to3bar6u[flow_]);
}
break;
case Colour38to63bar:
static ColourLines f38to63baru[8]
={ColourLines("1 2:1 -3, -5 2:2 4:1, 3 4:2"),
ColourLines("1 2:1 -3, -5 2:2 4:2, 3 4:1"),
ColourLines("1 2:1 4:1, -5 2:2 -3, 3 4:2"),
ColourLines("1 2:1 4:2, -5 2:2 -3, 3 4:1"),
ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines("")};
static ColourLines f38to63bart[8]
={ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines("1 4:1, 3 2 4:2, -5 -3"),
ColourLines("1 4:2, 3 2 4:1, -5 -3"),
ColourLines(""),ColourLines("")};
static ColourLines f38to63bars[8]
={ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines(""),ColourLines(""),
ColourLines("1 -2, 2 3 4:1, -5 4:2"),
ColourLines("1 -2, 2 3 4:2, -5 4:1")};
if(current.channelType == HPDiagram::sChannel)
sel.insert(1., &f38to63bars[flow_]);
else if(current.channelType == HPDiagram::tChannel) {
if(current.ordered.second)
sel.insert(1., &f38to63bart[flow_]);
else
sel.insert(1., &f38to63baru[flow_]);
}
break;
default:
assert(false);
}
return sel;
}
double GeneralHardME::
selectColourFlow(vector<double> & flow,vector<double> & me,
double average) const {
// spin average
double output = 0.25*average;
// special for beam polarization
tcPolarizedBeamPDPtr beam[2] =
{dynamic_ptr_cast<tcPolarizedBeamPDPtr>(mePartonData()[0]),
dynamic_ptr_cast<tcPolarizedBeamPDPtr>(mePartonData()[1])};
if( beam[0] || beam[1] ) {
RhoDMatrix rho[2] =
{beam[0] ? beam[0]->rhoMatrix() : RhoDMatrix(mePartonData()[0]->iSpin()),
beam[1] ? beam[1]->rhoMatrix() : RhoDMatrix(mePartonData()[1]->iSpin())};
for(unsigned int ix = 0;ix<numberOfFlows();++ix)
flow[ix] = flowME_[ix].average(rho[0],rho[1]);
for(unsigned int ix = 0;ix<numberOfDiags();++ix)
me [ix] = diagramME_[ix].average(rho[0],rho[1]);
output = 0.;
for(unsigned int ii = 0; ii < numberOfFlows(); ++ii)
for(unsigned int ij = 0; ij < numberOfFlows(); ++ij)
output += real(getColourFactors()[ii][ij]*
flowME_[ii].average(flowME_[ij],rho[0],rho[1]));
// correction for photons and gluons
if(mePartonData()[0]->id()==ParticleID::g ||
mePartonData()[0]->id()==ParticleID::gamma) output *= 1.5;
if(mePartonData()[1]->id()==ParticleID::g ||
mePartonData()[1]->id()==ParticleID::gamma) output *= 1.5;
}
// select the colour flow
double maxWgt = UseRandom::rnd()*std::accumulate(flow.begin(),flow.end(),0.);
flow_ = flow.size();
for(unsigned int ix=0;ix<flow.size();++ix) {
if(flow[ix]>=maxWgt) {
flow_=ix;
break;
}
maxWgt -= flow[ix];
}
assert(flow_<flow.size());
// select the diagram
for(unsigned int ix=0;ix<numberOfDiags();++ix) {
const HPDiagram & current = getProcessInfo()[ix];
bool found=false;
for(unsigned int iy = 0; iy < current.colourFlow.size(); ++iy) {
if(current.colourFlow[iy].first==flow_) {
me[ix] *= sqr(current.colourFlow[iy].second);
found = true;
}
}
// set to zero if four point diagram or doesn't contribute to colour flow
if(!found || current.channelType == HPDiagram::fourPoint) me[ix]=0.;
}
maxWgt = UseRandom::rnd()*std::accumulate(me.begin(),me.end(),0.);
for(unsigned int ix=0;ix<me.size();++ix) {
if(me[ix]>maxWgt) {
diagram_=ix;
break;
}
maxWgt -= me[ix];
}
// colour factors
output /= max(1,abs(int(mePartonData()[0]->iColour())));
output /= max(1,abs(int(mePartonData()[1]->iColour())));
// identical particle factor
output *= mePartonData()[2]->id() == mePartonData()[3]->id() ? 0.5 : 1;
// return the answer
return output;
}
void GeneralHardME::doinitrun() {
HwMEBase::doinitrun();
for(unsigned int ix=0;ix<diagrams_.size();++ix) {
diagrams_[ix].vertices.first ->initrun();
diagrams_[ix].vertices.second->initrun();
}
}
diff --git a/Models/General/HardProcessConstructor.cc b/Models/General/HardProcessConstructor.cc
--- a/Models/General/HardProcessConstructor.cc
+++ b/Models/General/HardProcessConstructor.cc
@@ -1,621 +1,613 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the HardProcessConstructor class.
//
#include "HardProcessConstructor.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Switch.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
using namespace Herwig;
void HardProcessConstructor::persistentOutput(PersistentOStream & os) const {
os << debug_ << subProcess_ << model_;
}
void HardProcessConstructor::persistentInput(PersistentIStream & is, int) {
is >> debug_ >> subProcess_ >> model_;
}
AbstractClassDescription<HardProcessConstructor>
HardProcessConstructor::initHardProcessConstructor;
// Definition of the static class description member.
void HardProcessConstructor::Init() {
static ClassDocumentation<HardProcessConstructor> documentation
("Base class for implementation of the automatic generation of hard processes");
static Switch<HardProcessConstructor,bool> interfaceDebugME
("DebugME",
"Print comparison with analytical ME",
&HardProcessConstructor::debug_, false, false, false);
static SwitchOption interfaceDebugMEYes
(interfaceDebugME,
"Yes",
"Print the debug information",
true);
static SwitchOption interfaceDebugMENo
(interfaceDebugME,
"No",
"Do not print the debug information",
false);
}
void HardProcessConstructor::doinit() {
Interfaced::doinit();
EGPtr eg = generator();
model_ = dynamic_ptr_cast<HwSMPtr>(eg->standardModel());
if(!model_)
throw InitException() << "HardProcessConstructor:: doinit() - "
<< "The model pointer is null!"
<< Exception::abortnow;
if(!eg->eventHandler()) {
throw
InitException() << "HardProcessConstructor:: doinit() - "
<< "The eventHandler pointer was null therefore "
<< "could not get SubProcessHandler pointer "
<< Exception::abortnow;
}
string subProcessName =
eg->preinitInterface(eg->eventHandler(), "SubProcessHandlers", "get","");
subProcess_ = eg->getObject<SubProcessHandler>(subProcessName);
if(!subProcess_) {
ostringstream s;
s << "HardProcessConstructor:: doinit() - "
<< "There was an error getting the SubProcessHandler "
<< "from the current event handler. ";
generator()->logWarning( Exception(s.str(), Exception::warning) );
}
}
GeneralHardME::ColourStructure HardProcessConstructor::
colourFlow(const tcPDVector & extpart) const {
PDT::Colour ina = extpart[0]->iColour();
PDT::Colour inb = extpart[1]->iColour();
PDT::Colour outa = extpart[2]->iColour();
PDT::Colour outb = extpart[3]->iColour();
// incoming colour neutral
if(ina == PDT::Colour0 && inb == PDT::Colour0) {
if( outa == PDT::Colour0 && outb == PDT::Colour0 ) {
return GeneralHardME::Colour11to11;
}
else if( outa == PDT::Colour3 && outb == PDT::Colour3bar ) {
return GeneralHardME::Colour11to33bar;
}
else if( outa == PDT::Colour8 && outb == PDT::Colour8 ) {
return GeneralHardME::Colour11to88;
}
else
assert(false);
}
// incoming 3 3
else if(ina == PDT::Colour3 && inb == PDT::Colour3 ) {
if( outa == PDT::Colour3 && outb == PDT::Colour3 ) {
return GeneralHardME::Colour33to33;
}
else if( outa == PDT::Colour6 && outb == PDT::Colour0 ) {
return GeneralHardME::Colour33to61;
}
else if( outa == PDT::Colour0 && outb == PDT::Colour6 ) {
return GeneralHardME::Colour33to16;
}
else
assert(false);
}
// incoming 3bar 3bar
else if(ina == PDT::Colour3bar && inb == PDT::Colour3bar ) {
if( outa == PDT::Colour3bar && outb == PDT::Colour3bar ) {
return GeneralHardME::Colour3bar3barto3bar3bar;
}
else if( outa == PDT::Colour6bar && outb == PDT::Colour0) {
return GeneralHardME::Colour3bar3barto6bar1;
}
else if ( outa == PDT::Colour0 && outb == PDT::Colour6bar ) {
return GeneralHardME::Colour3bar3barto16bar;
}
else
assert(false);
}
// incoming 3 3bar
else if(ina == PDT::Colour3 && inb == PDT::Colour3bar ) {
if( outa == PDT::Colour0 && outb == PDT::Colour0 ) {
return GeneralHardME::Colour33barto11;
}
else if( outa == PDT::Colour3 && outb == PDT::Colour3bar ) {
return GeneralHardME::Colour33barto33bar;
}
else if( outa == PDT::Colour8 && outb == PDT::Colour8 ) {
return GeneralHardME::Colour33barto88;
}
else if( outa == PDT::Colour8 && outb == PDT::Colour0 ) {
return GeneralHardME::Colour33barto81;
}
else if( outa == PDT::Colour0 && outb == PDT::Colour8 ) {
return GeneralHardME::Colour33barto18;
}
else if( outa == PDT::Colour6 && outb == PDT::Colour6bar) {
return GeneralHardME::Colour33barto66bar;
}
else if( outa == PDT::Colour6bar && outb == PDT::Colour6) {
return GeneralHardME::Colour33barto6bar6;
}
else
assert(false);
}
// incoming 88
else if(ina == PDT::Colour8 && inb == PDT::Colour8 ) {
if( outa == PDT::Colour0 && outb == PDT::Colour0 ) {
return GeneralHardME::Colour88to11;
}
else if( outa == PDT::Colour3 && outb == PDT::Colour3bar ) {
return GeneralHardME::Colour88to33bar;
}
else if( outa == PDT::Colour8 && outb == PDT::Colour8 ) {
return GeneralHardME::Colour88to88;
}
else if( outa == PDT::Colour8 && outb == PDT::Colour0 ) {
return GeneralHardME::Colour88to81;
}
else if( outa == PDT::Colour0 && outb == PDT::Colour8 ) {
return GeneralHardME::Colour88to18;
}
else if( outa == PDT::Colour6 && outb == PDT::Colour6bar ) {
return GeneralHardME::Colour88to66bar;
}
else
assert(false);
}
// incoming 38
else if(ina == PDT::Colour3 && inb == PDT::Colour8 ) {
if(outa == PDT::Colour3 && outb == PDT::Colour0) {
return GeneralHardME::Colour38to31;
}
else if(outa == PDT::Colour0 && outb == PDT::Colour3) {
return GeneralHardME::Colour38to13;
}
else if(outa == PDT::Colour3 && outb == PDT::Colour8) {
return GeneralHardME::Colour38to38;
}
else if(outa == PDT::Colour8 && outb == PDT::Colour3) {
return GeneralHardME::Colour38to83;
}
else if(outa == PDT::Colour3bar && outb == PDT::Colour6){
return GeneralHardME::Colour38to3bar6;
}
else if(outa == PDT::Colour6 && outb == PDT::Colour3bar){
return GeneralHardME::Colour38to63bar;
}
else
assert(false);
}
// incoming 3bar8
else if(ina == PDT::Colour3bar && inb == PDT::Colour8 ) {
if(outa == PDT::Colour3bar && outb == PDT::Colour0 ) {
return GeneralHardME::Colour3bar8to3bar1;
}
else if(outa == PDT::Colour0 && outb == PDT::Colour3bar) {
return GeneralHardME::Colour3bar8to13bar;
}
else if(outa == PDT::Colour3bar && outb == PDT::Colour8 ) {
return GeneralHardME::Colour3bar8to3bar8;
}
else if(outa == PDT::Colour8 && outb == PDT::Colour3bar) {
return GeneralHardME::Colour3bar8to83bar;
}
else
assert(false);
}
// unknown colour flow
else
assert(false);
return GeneralHardME::UNDEFINED;
}
void HardProcessConstructor::fixFSOrder(HPDiagram & diag) {
tcPDPtr psa = getParticleData(diag.incoming.first);
tcPDPtr psb = getParticleData(diag.incoming.second);
tcPDPtr psc = getParticleData(diag.outgoing.first);
tcPDPtr psd = getParticleData(diag.outgoing.second);
//fix a spin order
if( psc->iSpin() < psd->iSpin() ) {
swap(diag.outgoing.first, diag.outgoing.second);
if(diag.channelType == HPDiagram::tChannel) {
diag.ordered.second = !diag.ordered.second;
}
return;
}
if( psc->iSpin() == psd->iSpin() &&
psc->id() < 0 && psd->id() > 0 ) {
swap(diag.outgoing.first, diag.outgoing.second);
if(diag.channelType == HPDiagram::tChannel) {
diag.ordered.second = !diag.ordered.second;
}
return;
}
}
void HardProcessConstructor::assignToCF(HPDiagram & diag) {
if(diag.channelType == HPDiagram::tChannel) {
if(diag.ordered.second) tChannelCF(diag);
else uChannelCF(diag);
}
else if(diag.channelType == HPDiagram::sChannel) {
sChannelCF(diag);
}
else if (diag.channelType == HPDiagram::fourPoint) {
fourPointCF(diag);
}
else
assert(false);
}
void HardProcessConstructor::tChannelCF(HPDiagram & diag) {
PDT::Colour ina = getParticleData(diag.incoming.first )->iColour();
PDT::Colour inb = getParticleData(diag.incoming.second)->iColour();
PDT::Colour outa = getParticleData(diag.outgoing.first )->iColour();
PDT::Colour outb = getParticleData(diag.outgoing.second)->iColour();
vector<CFPair> cfv(1, make_pair(0, 1.));
if(diag.intermediate->iColour() == PDT::Colour0) {
if(ina==PDT::Colour0) {
cfv[0] = make_pair(0, 1);
}
else if(ina==PDT::Colour3 || ina==PDT::Colour3bar) {
if( inb == PDT::Colour0 ) {
cfv[0] = make_pair(0, 1);
}
else if(inb==PDT::Colour3 || outb==PDT::Colour3bar) {
cfv[0] = make_pair(2, 1);
}
else if(inb==PDT::Colour8) {
cfv[0] = make_pair(2, 1);
}
}
else if(ina==PDT::Colour8) {
if( inb == PDT::Colour0 ) {
cfv[0] = make_pair(0, 1);
}
else if(inb==PDT::Colour3 || outb==PDT::Colour3bar) {
cfv[0] = make_pair(2, 1);
}
else if(inb==PDT::Colour8) {
cfv[0] = make_pair(5, 1);
}
}
}
else if(diag.intermediate->iColour() == PDT::Colour8) {
if(ina==PDT::Colour8&&outa==PDT::Colour8&&
inb==PDT::Colour8&&outb==PDT::Colour8) {
cfv.push_back(make_pair(1, -1.));
}
}
else if(diag.intermediate->iColour() == PDT::Colour3 ||
diag.intermediate->iColour() == PDT::Colour3bar) {
if(outa == PDT::Colour0 || outb == PDT::Colour0) {
cfv[0] = make_pair(0,1.);
// cfv.push_back(make_pair(1,1.));
}
else if(outa==PDT::Colour6 && outb==PDT::Colour3bar) {
cfv[0] = make_pair(4,1.);
cfv.push_back(make_pair(5,1.));
}
else if(outa==PDT::Colour6 && outb==PDT::Colour6bar) {
cfv[0] = make_pair(4, 1.);
for(unsigned int ix=5;ix<8;++ix)
cfv.push_back(make_pair(ix,1.));
}
else if(outa==PDT::Colour6 || outa ==PDT::Colour6bar ||
outb==PDT::Colour6 || outb ==PDT::Colour6bar ) {
assert(false);
- // cfv[0] = make_pair(0,1.);
- // should this start a 0 or one i.e. 4 or 5 flows
- // for(int ix=0; ix<4;++ix)
- // cfv.push_back(make_pair(ix,1.));
- }
- else {
- cfv[0] = make_pair(0,1.);
}
}
else if(diag.intermediate->iColour() == PDT::Colour6 ||
diag.intermediate->iColour() == PDT::Colour6bar) {
if(ina==PDT::Colour8 && inb==PDT::Colour8) {
cfv[0] = make_pair(0, 1.);
for(unsigned int ix=1;ix<4;++ix)
cfv.push_back(make_pair(ix,1.));
for(unsigned int ix=4;ix<8;++ix)
cfv.push_back(make_pair(ix,1.));
}
else if(outa==PDT::Colour3bar && outb==PDT::Colour6) {
cfv[0] = make_pair(0,1.);
for(unsigned int ix=1;ix<4;++ix)
cfv.push_back(make_pair(ix,1.));
}
else if(outa==PDT::Colour6 && outb==PDT::Colour3bar) {
cfv[0] = make_pair(4,1.);
cfv.push_back(make_pair(5,1.));
}
}
diag.colourFlow = cfv;
}
void HardProcessConstructor::uChannelCF(HPDiagram & diag) {
PDT::Colour offshell = diag.intermediate->iColour();
PDT::Colour ina = getParticleData(diag.incoming.first )->iColour();
PDT::Colour inb = getParticleData(diag.incoming.second)->iColour();
PDT::Colour outa = getParticleData(diag.outgoing.first )->iColour();
PDT::Colour outb = getParticleData(diag.outgoing.second)->iColour();
vector<CFPair> cfv(1, make_pair(1, 1.));
if(offshell == PDT::Colour8) {
if( outa != outb ) {
if(outa == PDT::Colour0 ||
outb == PDT::Colour0) {
cfv[0].first = 0;
}
else {
cfv[0].first = 0;
cfv.push_back(make_pair(1, -1.));
}
}
else if(outa==PDT::Colour8&&ina==PDT::Colour8) {
cfv[0]=make_pair(1, -1.);
cfv.push_back(make_pair(2, 1.));
}
}
- else {
- if(offshell == PDT::Colour3 || offshell == PDT::Colour3bar) {
- if( outa == PDT::Colour0 || outb == PDT::Colour0 ) {
- cfv[0] = make_pair(0,1.);
- // cfv.push_back(make_pair(1,1.));
- }
- else if(outa==PDT::Colour3bar && outb==PDT::Colour6) {
- cfv[0] = make_pair(4,1.);
- cfv.push_back(make_pair(5,1.));
- }
- else if(outa==PDT::Colour6 && outb==PDT::Colour3bar) {
- cfv[0] = make_pair(0,1.);
- for(int ix=0; ix<4;++ix)
- cfv.push_back(make_pair(ix,1.));
- }
- else if(outa==PDT::Colour6bar && outb==PDT::Colour6) {
- cfv[0] = make_pair(4,1.);
- for(int ix=5; ix<8;++ix)
- cfv.push_back(make_pair(ix,1.));
- }
- else
- cfv[0].first = 0;
+ else if(offshell == PDT::Colour3 || offshell == PDT::Colour3bar) {
+ if( outa == PDT::Colour0 || outb == PDT::Colour0 ) {
+ cfv[0] = make_pair(0,1.);
}
- else if( offshell == PDT::Colour0 ) {
- if(ina==PDT::Colour0) {
+ else if(outa==PDT::Colour3bar && outb==PDT::Colour6) {
+ cfv[0] = make_pair(4,1.);
+ cfv.push_back(make_pair(5,1.));
+ }
+ else if(outa==PDT::Colour6 && outb==PDT::Colour3bar) {
+ cfv[0] = make_pair(0,1.);
+ for(int ix=0; ix<4;++ix)
+ cfv.push_back(make_pair(ix,1.));
+ }
+ else if(outa==PDT::Colour6bar && outb==PDT::Colour6) {
+ cfv[0] = make_pair(4,1.);
+ for(int ix=5; ix<8;++ix)
+ cfv.push_back(make_pair(ix,1.));
+ }
+ }
+ else if( offshell == PDT::Colour0 ) {
+ if(ina==PDT::Colour0) {
+ cfv[0] = make_pair(0, 1);
+ }
+ else if(ina==PDT::Colour3 || ina==PDT::Colour3bar) {
+ if( inb == PDT::Colour0 ) {
cfv[0] = make_pair(0, 1);
}
- else if(ina==PDT::Colour3 || ina==PDT::Colour3bar) {
- if( inb == PDT::Colour0 ) {
- cfv[0] = make_pair(0, 1);
- }
- else if(inb==PDT::Colour3 || outb==PDT::Colour3bar) {
- cfv[0] = make_pair(3, 1);
- }
- else if(inb==PDT::Colour8) {
- cfv[0] = make_pair(2, 1);
- }
+ else if(inb==PDT::Colour3 || outb==PDT::Colour3bar) {
+ cfv[0] = make_pair(3, 1);
}
- else if(ina==PDT::Colour8) {
- if( inb == PDT::Colour0 ) {
- cfv[0] = make_pair(0, 1);
- }
- else if(inb==PDT::Colour3 || outb==PDT::Colour3bar) {
- cfv[0] = make_pair(2, 1);
- }
- else if(inb==PDT::Colour8) {
- cfv[0] = make_pair(4, 1);
- }
+ else if(inb==PDT::Colour8) {
+ cfv[0] = make_pair(2, 1);
}
}
- else if(diag.intermediate->iColour() == PDT::Colour6 ||
- diag.intermediate->iColour() == PDT::Colour6bar) {
- if(ina==PDT::Colour8 && inb==PDT::Colour8) {
- cfv[0] = make_pair(0, 1.);
- for(unsigned int ix=1;ix<4;++ix)
- cfv.push_back(make_pair(ix,1.));
- for(unsigned int ix=8;ix<12;++ix)
- cfv.push_back(make_pair(ix,1.));
+ else if(ina==PDT::Colour8) {
+ if( inb == PDT::Colour0 ) {
+ cfv[0] = make_pair(0, 1);
}
- else if(outa==PDT::Colour3bar && outa==PDT::Colour6) {
- cfv[0] = make_pair(4, 1.);
- cfv.push_back(make_pair(5,1.));
+ else if(inb==PDT::Colour3 || outb==PDT::Colour3bar) {
+ cfv[0] = make_pair(2, 1);
}
- else if(outa==PDT::Colour6 && outa==PDT::Colour3bar) {
- cfv[0] = make_pair(0, 1.);
- for(unsigned int ix=1;ix<4;++ix)
- cfv.push_back(make_pair(ix,1.));
+ else if(inb==PDT::Colour8) {
+ cfv[0] = make_pair(4, 1);
}
}
}
+ else if(diag.intermediate->iColour() == PDT::Colour6 ||
+ diag.intermediate->iColour() == PDT::Colour6bar) {
+ if(ina==PDT::Colour8 && inb==PDT::Colour8) {
+ cfv[0] = make_pair(0, 1.);
+ for(unsigned int ix=1;ix<4;++ix)
+ cfv.push_back(make_pair(ix,1.));
+ for(unsigned int ix=8;ix<12;++ix)
+ cfv.push_back(make_pair(ix,1.));
+ }
+ else if(outa==PDT::Colour3bar && outa==PDT::Colour6) {
+ cfv[0] = make_pair(4, 1.);
+ cfv.push_back(make_pair(5,1.));
+ }
+ else if(outa==PDT::Colour6 && outa==PDT::Colour3bar) {
+ cfv[0] = make_pair(0, 1.);
+ for(unsigned int ix=1;ix<4;++ix)
+ cfv.push_back(make_pair(ix,1.));
+ }
+ }
diag.colourFlow = cfv;
}
void HardProcessConstructor::sChannelCF(HPDiagram & diag) {
tcPDPtr pa = getParticleData(diag.incoming.first);
tcPDPtr pb = getParticleData(diag.incoming.second);
PDT::Colour ina = pa->iColour();
PDT::Colour inb = pb->iColour();
PDT::Colour offshell = diag.intermediate->iColour();
tcPDPtr pc = getParticleData(diag.outgoing.first);
tcPDPtr pd = getParticleData(diag.outgoing.second);
PDT::Colour outa = pc->iColour();
PDT::Colour outb = pd->iColour();
vector<CFPair> cfv(1);
if(offshell == PDT::Colour8) {
if(ina == PDT::Colour0 || inb == PDT::Colour0 ||
outa == PDT::Colour0 || outb == PDT::Colour0) {
cfv[0] = make_pair(0, 1);
}
else {
bool incol = ina == PDT::Colour8 && inb == PDT::Colour8;
bool outcol = outa == PDT::Colour8 && outb == PDT::Colour8;
bool intrip = ina == PDT::Colour3 && inb == PDT::Colour3bar;
bool outtrip = outa == PDT::Colour3 && outb == PDT::Colour3bar;
bool outsex = outa == PDT::Colour6 && outb == PDT::Colour6bar;
bool outsexb = outa == PDT::Colour6bar && outb == PDT::Colour6;
if(incol || outcol) {
// Require an additional minus sign for a fermion 33bar final state
// due to the way the vertex rules are defined.
int prefact(1);
if( (pc->iSpin() == PDT::Spin1Half && pd->iSpin() == PDT::Spin1Half) &&
(outa == PDT::Colour3 && outb == PDT::Colour3bar) )
prefact = -1;
if(incol && outcol) {
cfv[0].first = 0;
cfv[0].second = -prefact;
cfv.push_back(make_pair(2, prefact));
}
else if(incol && outsex) {
cfv[0].first = 4;
cfv[0].second = -prefact;
for(unsigned int ix=1;ix<4;++ix)
cfv.push_back(make_pair(4+ix,-prefact));
for(unsigned int ix=0;ix<4;++ix)
cfv.push_back(make_pair(8+ix, prefact));
}
else {
cfv[0].first = 0;
cfv[0].second = -prefact;
cfv.push_back(make_pair(1, prefact));
}
}
else if( ( intrip && !outtrip ) ||
( !intrip && outtrip ) ) {
if(!outsex)
cfv[0] = make_pair(0, 1);
else {
cfv[0] = make_pair(0, 1.);
for(unsigned int ix=0;ix<3;++ix)
cfv.push_back(make_pair(ix+1, 1.));
}
}
else if((intrip && outsex) || (intrip && outsexb)) {
cfv[0] = make_pair(0,1.);
for(int ix=1; ix<4; ++ix)
cfv.push_back(make_pair(ix,1.));
}
else
cfv[0] = make_pair(1, 1);
}
}
else if(offshell == PDT::Colour0) {
if( ina == PDT::Colour0 ) {
cfv[0] = make_pair(0, 1);
}
else if(ina==PDT::Colour3 || ina==PDT::Colour3bar) {
if( outa == PDT::Colour0 ) {
cfv[0] = make_pair(0, 1);
}
else if(outa==PDT::Colour3 || outa==PDT::Colour3bar) {
cfv[0] = make_pair(3, 1);
}
else if(outa==PDT::Colour8) {
cfv[0] = make_pair(2, 1);
}
+ else
+ assert(false);
}
else if(ina==PDT::Colour8) {
if( outa == PDT::Colour0 ) {
cfv[0] = make_pair(0, 1);
}
else if(outa==PDT::Colour3 || outb==PDT::Colour3bar) {
cfv[0] = make_pair(2, 1);
}
else if(outa==PDT::Colour8) {
cfv[0] = make_pair(3, 1);
}
}
}
else if(offshell == PDT::Colour3 || offshell == PDT::Colour3bar) {
if(outa == PDT::Colour6 || outa == PDT::Colour6bar ||
outb == PDT::Colour6bar || outb == PDT::Colour6) {
cfv[0] = make_pair(6, 1.);
cfv.push_back(make_pair(7,1.));
}
+ else
+ cfv[0] = make_pair(0, 1);
}
else if( offshell == PDT::Colour6 || offshell == PDT::Colour6bar) {
cfv[0] = make_pair(2,0.5);
cfv.push_back(make_pair(3,0.5));
}
else {
if(outa == PDT::Colour0 || outb == PDT::Colour0)
cfv[0] = make_pair(0, 1);
else
cfv[0] = make_pair(1, 1);
}
diag.colourFlow = cfv;
}
void HardProcessConstructor::fourPointCF(HPDiagram & diag) {
// count the colours
unsigned int noct(0),ntri(0),nsng(0),nsex(0);
for(unsigned int ix=0;ix<4;++ix) {
PDT::Colour col = getParticleData(diag.ids[ix])->iColour();
if(col==PDT::Colour0) ++nsng;
else if(col==PDT::Colour3||col==PDT::Colour3bar) ++ntri;
else if(col==PDT::Colour8) ++noct;
else if(col==PDT::Colour6||col==PDT::Colour6bar) ++nsex;
}
if(nsng==4 || (ntri==2&&nsng==2) ||
(noct==3 && nsng==1) ||
(ntri==2 && noct==1 && nsng==1) ) {
vector<CFPair> cfv(1,make_pair(0,1));
diag.colourFlow = cfv;
}
else if(noct==4) {
// flows for SSVV, VVVV is handled in me class
vector<CFPair> cfv(3);
cfv[0] = make_pair(0, 1.);
cfv[1] = make_pair(1,-2.);
cfv[2] = make_pair(2, 1.);
diag.colourFlow = cfv;
}
else if(ntri==2&&noct==2) {
vector<CFPair> cfv(2);
cfv[0] = make_pair(0, 1);
cfv[1] = make_pair(1, 1);
diag.colourFlow = cfv;
}
else if(nsex==2&&noct==2) {
vector<CFPair> cfv;
for(unsigned int ix=0;ix<4;++ix)
cfv.push_back(make_pair(ix ,2.));
for(unsigned int ix=0;ix<8;++ix)
cfv.push_back(make_pair(4+ix,1.));
diag.colourFlow = cfv;
}
else
assert(false);
}
namespace {
// Helper functor for find_if in duplicate function.
class SameDiagramAs {
public:
SameDiagramAs(const HPDiagram & diag) : a(diag) {}
bool operator()(const HPDiagram & b) const {
return a == b;
}
private:
HPDiagram a;
};
}
bool HardProcessConstructor::duplicate(const HPDiagram & diag,
const HPDVector & group) const {
//find if a duplicate diagram exists
HPDVector::const_iterator it =
find_if(group.begin(), group.end(), SameDiagramAs(diag));
return it != group.end();
}

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