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diff --git a/Models/General/HardProcessConstructor.cc b/Models/General/HardProcessConstructor.cc
--- a/Models/General/HardProcessConstructor.cc
+++ b/Models/General/HardProcessConstructor.cc
@@ -1,951 +1,954 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the HardProcessConstructor class.
//
#include "HardProcessConstructor.h"
#include "ThePEG/Utilities/DescribeClass.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_;
}
// The following static variable is needed for the type
// description system in ThePEG.
DescribeAbstractClass<HardProcessConstructor,Interfaced>
describeHerwigHardProcessConstructor("Herwig::HardProcessConstructor", "Herwig.so");
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 if ( outa == PDT::Colour0 && outb == PDT::Colour3bar) {
return GeneralHardME::Colour33to13bar;
}
else if ( outb == PDT::Colour0 && outa == PDT::Colour3bar) {
return GeneralHardME::Colour33to3bar1;
}
else if ( outa == PDT::Colour8 && outb == PDT::Colour3bar) {
return GeneralHardME::Colour33to83bar;
}
else if ( outb == PDT::Colour8 && outa == PDT::Colour3bar) {
return GeneralHardME::Colour33to3bar8;
}
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 if ( outa == PDT::Colour0 && outb == PDT::Colour3) {
return GeneralHardME::Colour3bar3barto13;
}
else if ( outb == PDT::Colour0 && outa == PDT::Colour3) {
return GeneralHardME::Colour3bar3barto31;
}
else if ( outa == PDT::Colour8 && outb == PDT::Colour3) {
return GeneralHardME::Colour3bar3barto83;
}
else if ( outb == PDT::Colour8 && outa == PDT::Colour3) {
return GeneralHardME::Colour3bar3barto38;
}
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 if(outa == PDT::Colour3bar && outb == PDT::Colour3bar) {
return GeneralHardME::Colour38to3bar3bar;
}
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 if(outa == PDT::Colour3 && outb == PDT::Colour3) {
return GeneralHardME::Colour3bar8to33;
}
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) {
tcPDPtr ia = getParticleData(diag.incoming.first );
tcPDPtr ib = getParticleData(diag.incoming.second);
tcPDPtr oa = getParticleData(diag.outgoing.first );
tcPDPtr ob = getParticleData(diag.outgoing.second);
PDT::Colour ina = ia->iColour();
PDT::Colour inb = ib->iColour();
PDT::Colour outa = oa->iColour();
PDT::Colour outb = ob->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(7, -1);
}
}
}
else if(diag.intermediate->iColour() == PDT::Colour8) {
if(ina==PDT::Colour8&&outa==PDT::Colour8&&
inb==PDT::Colour8&&outb==PDT::Colour8) {
cfv[0]=make_pair(2, 2.);
cfv.push_back(make_pair(3, -2.));
cfv.push_back(make_pair(1, -2.));
cfv.push_back(make_pair(4, 2.));
}
else if(ina==PDT::Colour8&&outa==PDT::Colour0&&
inb==PDT::Colour8&&outb==PDT::Colour8&&
(oa->iSpin()==PDT::Spin0||oa->iSpin()==PDT::Spin1Half)) {
cfv[0] = make_pair(0,-1);
}
else if(ina==PDT::Colour8&&outa==PDT::Colour8&&
inb==PDT::Colour8&&outb==PDT::Colour0&&
(ob->iSpin()==PDT::Spin0||ob->iSpin()==PDT::Spin1Half)) {
cfv[0] = make_pair(0,-1);
}
}
else if(diag.intermediate->iColour() == PDT::Colour3 ||
diag.intermediate->iColour() == PDT::Colour3bar) {
if(outa == PDT::Colour0 || outb == PDT::Colour0) {
if( outa == PDT::Colour6 || outb == PDT::Colour6 ||
outa == PDT::Colour6bar || outb == PDT::Colour6bar) {
cfv[0] = make_pair(0,0.5);
cfv.push_back(make_pair(1,0.5));
}
else if ((ina==PDT::Colour3 && inb == PDT::Colour3 &&
(outa == PDT::Colour3bar || outb == PDT::Colour3bar))||
(ina==PDT::Colour3bar && inb == PDT::Colour3bar &&
(outa == PDT::Colour3 || outb == PDT::Colour3 ))) {
cfv[0] = make_pair(0,1.);
}
else {
cfv[0] = make_pair(0,1.);
}
}
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);
}
else if(ina==PDT::Colour3 && inb==PDT::Colour3 ) {
if((outa==PDT::Colour0 && outb==PDT::Colour3bar)||
(outb==PDT::Colour0 && outa==PDT::Colour3bar))
cfv[0] = make_pair(0,1.);
else if((outa==PDT::Colour8 && outb==PDT::Colour3bar)||
- (outb==PDT::Colour8 && outa==PDT::Colour3bar))
- cfv[0] = make_pair(1,1.);
+ (outb==PDT::Colour8 && outa==PDT::Colour3bar)) {
+ double sign = diag.intermediate->iSpin()==PDT::Spin0 ? -1. : 1.;
+ cfv[0] = make_pair(1,sign);
+ }
}
else if(ina==PDT::Colour3bar && inb==PDT::Colour3bar ) {
if((outa==PDT::Colour0 && outb==PDT::Colour3)||
(outb==PDT::Colour0 && outa==PDT::Colour3))
cfv[0] = make_pair(0,1.);
else if((outa==PDT::Colour8 && outb==PDT::Colour3)||
- (outb==PDT::Colour8 && outa==PDT::Colour3))
+ (outb==PDT::Colour8 && outa==PDT::Colour3)) {
cfv[0] = make_pair(1,1.);
+ }
}
else if((ina==PDT::Colour3 && inb==PDT::Colour8) ||
(ina==PDT::Colour3bar && inb==PDT::Colour8) ||
(inb==PDT::Colour3 && ina==PDT::Colour8) ||
(inb==PDT::Colour3bar && ina==PDT::Colour8) ) {
if((outa==PDT::Colour3 && outb==PDT::Colour3 ) ||
(outa==PDT::Colour3bar && outb==PDT::Colour3bar)) {
cfv[0] = make_pair(1,1.);
}
}
}
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) {
tcPDPtr ia = getParticleData(diag.incoming.first );
tcPDPtr ib = getParticleData(diag.incoming.second);
tcPDPtr oa = getParticleData(diag.outgoing.first );
tcPDPtr ob = getParticleData(diag.outgoing.second);
PDT::Colour ina = ia->iColour();
PDT::Colour inb = ib->iColour();
PDT::Colour outa = oa->iColour();
PDT::Colour outb = ob->iColour();
PDT::Colour offshell = diag.intermediate->iColour();
vector<CFPair> cfv(1, make_pair(1, 1.));
if(offshell == PDT::Colour8) {
if(outa == PDT::Colour0 &&
outb == PDT::Colour0) {
cfv[0].first = 0;
}
else if( outa != outb ) {
if(outa == PDT::Colour0 ||
outb == PDT::Colour0) {
cfv[0].first = 0;
}
else if(ina == PDT::Colour3 && inb == PDT::Colour8 &&
outb == PDT::Colour3 && outa == PDT::Colour8) {
tPDPtr off = diag.intermediate;
if(off->CC()) off=off->CC();
if(off->iSpin()!=PDT::Spin1Half ||
diag.vertices.second->allowed(off->id(),diag.outgoing.first,diag.incoming.second)) {
cfv[0].first = 0;
cfv.push_back(make_pair(1, -1.));
}
else {
cfv[0].first = 1;
cfv.push_back(make_pair(0, -1.));
}
}
else if(ina == PDT::Colour3bar && inb == PDT::Colour8 &&
outb == PDT::Colour3bar && outa == PDT::Colour8) {
tPDPtr off = diag.intermediate;
if(off->CC()) off=off->CC();
if(off->iSpin()!=PDT::Spin1Half ||
diag.vertices.second->allowed(diag.outgoing.first,off->id(),diag.incoming.second)) {
cfv[0].first = 0;
cfv.push_back(make_pair(1, -1.));
}
else {
cfv[0].first = 1;
cfv.push_back(make_pair(0, -1.));
}
}
else {
cfv[0].first = 0;
cfv.push_back(make_pair(1, -1.));
}
}
else if(outa==PDT::Colour8&&ina==PDT::Colour8) {
cfv[0]=make_pair(4, 2.);
cfv.push_back(make_pair(5, -2.));
cfv.push_back(make_pair(0, -2.));
cfv.push_back(make_pair(2, 2.));
}
}
else if(offshell == PDT::Colour3 || offshell == PDT::Colour3bar) {
if( outa == PDT::Colour0 || outb == PDT::Colour0 ) {
if( outa == PDT::Colour6 || outb == PDT::Colour6 ||
outa == PDT::Colour6bar || outb == PDT::Colour6bar) {
cfv[0] = make_pair(0,0.5);
cfv.push_back(make_pair(1,0.5));
}
else if ((ina==PDT::Colour3 && inb == PDT::Colour3 &&
(outa == PDT::Colour3bar || outb == PDT::Colour3bar))||
(ina==PDT::Colour3bar && inb == PDT::Colour3bar &&
(outa == PDT::Colour3 || outb == PDT::Colour3 ))) {
double sign = diag.intermediate->iSpin()==PDT::Spin0 ? -1 : 1.;
cfv[0] = make_pair(0,sign);
}
else {
cfv[0] = make_pair(0,1.);
}
}
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 if(ina==PDT::Colour0 && inb==PDT::Colour0) {
cfv[0] = make_pair(0,1.);
}
else if(ina==PDT::Colour3 && inb==PDT::Colour3 ) {
if((outa==PDT::Colour0 && outb==PDT::Colour3bar)||
(outb==PDT::Colour0 && outa==PDT::Colour3bar))
cfv[0] = make_pair(0,1.);
else if((outa==PDT::Colour8 && outb==PDT::Colour3bar)||
(outb==PDT::Colour8 && outa==PDT::Colour3bar)) {
double sign = diag.intermediate->iSpin()==PDT::Spin0 ? -1. : 1.;
cfv[0] = make_pair(2,sign);
}
}
else if(ina==PDT::Colour3bar && inb==PDT::Colour3bar ) {
if((outa==PDT::Colour0 && outb==PDT::Colour3)||
(outb==PDT::Colour0 && outa==PDT::Colour3))
cfv[0] = make_pair(0,1.);
else if((outa==PDT::Colour8 && outb==PDT::Colour3)||
(outb==PDT::Colour8 && outa==PDT::Colour3))
cfv[0] = make_pair(2,1.);
}
else if(((ina==PDT::Colour3 && inb==PDT::Colour8) ||
(ina==PDT::Colour3bar && inb==PDT::Colour8) ||
(inb==PDT::Colour3 && ina==PDT::Colour8) ||
(inb==PDT::Colour3bar && ina==PDT::Colour8)) &&
((outa==PDT::Colour3 && outb==PDT::Colour3 ) ||
(outa==PDT::Colour3bar && outb==PDT::Colour3bar))) {
cfv[0] = make_pair(2, 1.);
}
else if(( ina==PDT::Colour3 && inb==PDT::Colour3bar &&
outa==PDT::Colour3 && outb==PDT::Colour3bar)) {
cfv[0] = make_pair(2, 1.);
cfv.push_back(make_pair(3,-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(inb==PDT::Colour3 || inb==PDT::Colour3bar) {
cfv[0] = make_pair(3, 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(8, -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 scalar/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) ||
(pc->iSpin() == PDT::Spin0 && pd->iSpin() == PDT::Spin0 )) &&
(outa == PDT::Colour3 && outb == PDT::Colour3bar) )
prefact = -1;
if(incol && outcol) {
cfv[0] = make_pair(0, -2.);
cfv.push_back(make_pair(1, 2.));
cfv.push_back(make_pair(3, 2.));
cfv.push_back(make_pair(5, -2.));
}
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 if(outa==PDT::Colour6 || outa==PDT::Colour6bar) {
cfv[0] = make_pair(8, 1.);
cfv.push_back(make_pair(9,1.));
}
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(6, 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 if((ina == PDT::Colour3 && inb == PDT::Colour3) ||
(ina == PDT::Colour3bar && inb == PDT::Colour3bar)) {
if((outa == PDT::Colour3 && outb == PDT::Colour3 ) ||
(outa == PDT::Colour3bar && outb == PDT::Colour3bar)) {
cfv[0] = make_pair(2, 1.);
cfv.push_back(make_pair(3,-1.));
}
else
cfv[0] = make_pair(0,1.);
}
else if(((ina==PDT::Colour3 && inb==PDT::Colour8) ||
(ina==PDT::Colour3bar && inb==PDT::Colour8) ||
(inb==PDT::Colour3 && ina==PDT::Colour8) ||
(inb==PDT::Colour3bar && ina==PDT::Colour8) ) &&
((outa==PDT::Colour3 && outb==PDT::Colour3 ) ||
(outa==PDT::Colour3bar && outb==PDT::Colour3bar))) {
cfv[0] = make_pair(0,1.);
}
else {
if(outa == PDT::Colour0 || outb == PDT::Colour0)
cfv[0] = make_pair(0, 1);
else
cfv[0] = make_pair(1, 1);
}
}
else if( offshell == PDT::Colour6 || offshell == PDT::Colour6bar) {
if((ina == PDT::Colour3 && inb == PDT::Colour3 &&
outa == PDT::Colour3 && outb == PDT::Colour3 ) ||
(ina == PDT::Colour3bar && inb == PDT::Colour3bar &&
outa == PDT::Colour3bar && outb == PDT::Colour3bar)) {
cfv[0] = make_pair(2,0.5);
cfv.push_back(make_pair(3,0.5));
}
else if((ina == PDT::Colour3 && inb == PDT::Colour3 &&
((outa == PDT::Colour6 && outb == PDT::Colour0)||
(outb == PDT::Colour6 && outa == PDT::Colour0))) ||
(ina == PDT::Colour3bar && inb == PDT::Colour3bar &&
((outa == PDT::Colour6bar && outb == PDT::Colour0)||
(outb == PDT::Colour6bar && outa == PDT::Colour0)))) {
cfv[0] = make_pair(0,0.5);
cfv.push_back(make_pair(1,0.5));
}
else
assert(false);
}
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) {
using namespace ThePEG::Helicity;
// count the colours
unsigned int noct(0),ntri(0),nsng(0),nsex(0),nf(0);
vector<tcPDPtr> particles;
for(unsigned int ix=0;ix<4;++ix) {
particles.push_back(getParticleData(diag.ids[ix]));
PDT::Colour col = particles.back()->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(particles.back()->iSpin()==2) nf+=1;
}
if(nsng==4 || (ntri==2&&nsng==2) ||
(noct==3 && nsng==1) ||
(ntri==2 && noct==1 && nsng==1) ||
(noct == 2 && nsng == 2) ) {
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(6);
cfv[0] = make_pair(0, -2.);
cfv[1] = make_pair(1, -2.);
cfv[2] = make_pair(2, +4.);
cfv[3] = make_pair(3, -2.);
cfv[4] = make_pair(4, +4.);
cfv[5] = make_pair(5, -2.);
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);
if(nf==2) cfv[1].second = -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 if(ntri==4) {
// get the order from the vertex
vector<long> temp;
for(unsigned int ix=0;ix<4;++ix) {
temp = diag.vertices.first->search(ix,diag.outgoing.first);
if(!temp.empty()) break;
}
// compute the mapping
vector<long> ids;
ids.push_back( particles[0]->CC() ? -diag.incoming.first : diag.incoming.first );
ids.push_back( particles[1]->CC() ? -diag.incoming.second : diag.incoming.second);
ids.push_back( diag.outgoing.first );
ids.push_back( diag.outgoing.second);
vector<unsigned int> order = {0,1,2,3};
vector<bool> matched(4,false);
for(unsigned int ix=0;ix<temp.size();++ix) {
for(unsigned int iy=0;iy<ids.size();++iy) {
if(matched[iy]) continue;
if(temp[ix]==ids[iy]) {
matched[iy] = true;
order[ix]=iy;
break;
}
}
}
// 3 3 -> 3 3
if((particles[0]->iColour()==PDT::Colour3 &&
particles[1]->iColour()==PDT::Colour3) ||
(particles[0]->iColour()==PDT::Colour3bar &&
particles[1]->iColour()==PDT::Colour3bar) ) {
if(diag.vertices.first->colourStructure()==ColourStructure::SU3I12I34) {
if( (order[0]==0 && order[1]==2) || (order[2]==0 && order[3]==2) ||
(order[0]==2 && order[1]==0) || (order[2]==2 && order[3]==0))
diag.colourFlow = vector<CFPair>(1,make_pair(2,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(3,1.));
}
else if(diag.vertices.first->colourStructure()==ColourStructure::SU3I14I23) {
if( (order[0]==0 && order[3]==2) || (order[1]==0 && order[2]==2) ||
(order[0]==2 && order[3]==0) || (order[1]==2 && order[2]==0))
diag.colourFlow = vector<CFPair>(1,make_pair(2,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(3,1.));
}
else if(diag.vertices.first->colourStructure()==ColourStructure::SU3T21T43) {
if( (order[1]==0 && order[0]==2) || (order[3]==0 && order[2]==2) ||
(order[1]==2 && order[0]==0) || (order[3]==2 && order[2]==0))
diag.colourFlow = vector<CFPair>(1,make_pair(0,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(1,1.));
}
else if(diag.vertices.first->colourStructure()==ColourStructure::SU3T23T41) {
if( (order[1]==0 && order[2]==2) || (order[3]==0 && order[0]==2) ||
(order[1]==2 && order[2]==0) || (order[3]==2 && order[0]==0))
diag.colourFlow = vector<CFPair>(1,make_pair(0,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(1,1.));
}
else
assert(false);
}
else if((particles[0]->iColour()==PDT::Colour3 &&
particles[1]->iColour()==PDT::Colour3bar) |
(particles[0]->iColour()==PDT::Colour3bar &&
particles[1]->iColour()==PDT::Colour3)) {
if(diag.vertices.first->colourStructure()==ColourStructure::SU3I12I34) {
if( (order[0]==0 && order[1]==1) || (order[2]==0 && order[3]==0) ||
(order[0]==1 && order[1]==0) || (order[2]==1 && order[3]==1))
diag.colourFlow = vector<CFPair>(1,make_pair(3,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(2,1.));
}
else if(diag.vertices.first->colourStructure()==ColourStructure::SU3I14I23) {
if( (order[0]==0 && order[3]==1) || (order[0]==2 && order[3]==3) ||
(order[0]==1 && order[3]==0) || (order[0]==3 && order[3]==2))
diag.colourFlow = vector<CFPair>(1,make_pair(3,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(2,1.));
}
else if(diag.vertices.first->colourStructure()==ColourStructure::SU3T21T43) {
if( (order[1]==0 && order[0]==1) || (order[3]==0 && order[2]==1) ||
(order[1]==1 && order[0]==0) || (order[3]==1 && order[2]==0))
diag.colourFlow = vector<CFPair>(1,make_pair(1,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(0,1.));
}
else if(diag.vertices.first->colourStructure()==ColourStructure::SU3T23T41) {
if( (order[1]==0 && order[2]==1) || (order[1]==1 && order[2]==0) ||
(order[1]==3 && order[2]==2) || (order[1]==2 && order[2]==3))
diag.colourFlow = vector<CFPair>(1,make_pair(1,1.));
else
diag.colourFlow = vector<CFPair>(1,make_pair(2,1.));
}
else
assert(false);
}
else {
assert(false);
}
}
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();
}
bool HardProcessConstructor::checkOrder(const HPDiagram & diag) const {
for(map<string,pair<unsigned int,int> >::const_iterator it=model_->couplings().begin();
it!=model_->couplings().end();++it) {
int order=0;
if(diag.vertices.first ) order += diag.vertices.first ->orderInCoupling(it->second.first);
if(diag.vertices.second&&diag.vertices.first->getNpoint()==3)
order += diag.vertices.second->orderInCoupling(it->second.first);
if(order>it->second.second) return false;
}
return true;
}

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