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diff --git a/src/Event.cc b/src/Event.cc
index e9ee7cf..661a565 100644
--- a/src/Event.cc
+++ b/src/Event.cc
@@ -1,889 +1,912 @@
/**
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include "HEJ/Event.hh"
#include <algorithm>
#include <assert.h>
#include <numeric>
#include <unordered_set>
#include <utility>
#include "LHEF/LHEF.h"
#include "fastjet/JetDefinition.hh"
#include "HEJ/Constants.hh"
#include "HEJ/exceptions.hh"
#include "HEJ/PDG_codes.hh"
namespace HEJ{
namespace {
constexpr int status_in = -1;
constexpr int status_decayed = 2;
constexpr int status_out = 1;
/// @name helper functions to determine event type
//@{
/**
* \brief check if final state valid for HEJ
*
* check if there is at most one photon, W, H, Z in the final state
* and all the rest are quarks or gluons
*/
bool final_state_ok(std::vector<Particle> const & outgoing){
bool has_AWZH_boson = false;
for(auto const & out: outgoing){
if(is_AWZH_boson(out.type)){
if(has_AWZH_boson) return false;
has_AWZH_boson = true;
}
else if(! is_parton(out.type)) return false;
}
return true;
}
/**
+ * returns all EventTypes implemented in HEJ
+ */
+ size_t implemented_types(std::vector<Particle> const & bosons){
+ using namespace event_type;
+ if(bosons.empty()) return FKL | unob | unof; // pure jets
+ if(bosons.size()>1) return non_resummable; // multi boson
+ switch (bosons[0].type) {
+ case ParticleID::Wp:
+ case ParticleID::Wm:
+ return FKL | unob | unof | qqxexb | qqxexf | qqxmid;
+ case ParticleID::h:
+ return FKL | unob | unof;
+ default:
+ return non_resummable;
+ }
+ }
+
+ /**
* \brief function which determines if type change is consistent with Wp emission.
* @param in incoming Particle id
* @param out outgoing Particle id
* @param qqx Current both incoming/both outgoing?
*
* \see is_Wm_Change
*/
bool is_Wp_Change(ParticleID in, ParticleID out, bool qqx){
if(!qqx && (in==-1 || in== 2 || in==-3 || in== 4)) return out== (in-1);
if( qqx && (in== 1 || in==-2 || in== 3 || in==-4)) return out==-(in+1);
return false;
}
/**
* \brief function which determines if type change is consistent with Wm emission.
* @param in incoming Particle id
* @param out outgoing Particle id
* @param qqx Current both incoming/both outgoing?
*
* Ensures that change type of quark line is possible by a flavour changing
* Wm emission. Allows checking of qqx currents also.
*/
bool is_Wm_Change(ParticleID in, ParticleID out, bool qqx){
if(!qqx && (in== 1 || in==-2 || in== 3 || in==-4)) return out== (in+1);
if( qqx && (in==-1 || in== 2 || in==-3 || in== 4)) return out==-(in-1);
return false;
}
/**
* \brief checks if particle type remains same from incoming to outgoing
* @param in incoming Particle
* @param out outgoing Particle
* @param qqx Current both incoming/outgoing?
*/
bool no_flavour_change(ParticleID in, ParticleID out, bool qqx){
const int qqxCurrent = qqx?-1:1;
if(abs(in)<=6 || in==pid::gluon) return (in==out*qqxCurrent);
else return false;
}
bool has_2_jets(Event const & event){
return event.jets().size() >= 2;
}
/**
* \brief check if we have a valid Impact factor
* @param in incoming Particle
* @param out outgoing Particle
* @param qqx Current both incoming/outgoing?
* @param qqx returns +1 if Wp, -1 if Wm, else 0
*/
bool is_valid_impact_factor(
ParticleID in, ParticleID out, bool qqx, int & W_change
){
if( no_flavour_change(in, out, qqx) ){
return true;
}
if( is_Wp_Change(in, out, qqx) ) {
W_change+=1;
return true;
}
if( is_Wm_Change(in, out, qqx) ) {
W_change-=1;
return true;
}
return false;
}
//! Returns all possible classifications from the impact factors
// the beginning points are changed s.t. after the the classification they
// point to the beginning of the (potential) FKL chain
// sets W_change: + if Wp change
// 0 if no change
// - if Wm change
// This function can be used with forward & backwards iterators
template<class OutIterator>
size_t possible_impact_factors(
ParticleID incoming_id, // incoming
OutIterator & begin_out, OutIterator const & end_out, // outgoing
int & W_change, std::vector<Particle> const & boson,
bool const backward // backward?
){
using namespace event_type;
assert(boson.size() < 2);
// keep track of all states that we don't test
size_t not_tested = qqxmid;
if(backward)
not_tested |= unof | qqxexf;
else
not_tested |= unob | qqxexb;
// Is this LL current?
if( is_valid_impact_factor(incoming_id, begin_out->type, false, W_change) ){
++begin_out;
return not_tested | FKL;
}
// or NLL current?
// -> needs two partons in two different jets
if( std::distance(begin_out, end_out)>=2
){
// Is this unordered emisson?
if( incoming_id!=pid::gluon && begin_out->type==pid::gluon ){
if( is_valid_impact_factor(
incoming_id, (begin_out+1)->type, false, W_change )
){
// veto Higgs inside uno
assert((begin_out+1)<end_out);
if( !boson.empty() && boson.front().type == ParticleID::h
){
if( (backward && boson.front().rapidity() < (begin_out+1)->rapidity())
||(!backward && boson.front().rapidity() > (begin_out+1)->rapidity()))
return non_resummable;
}
begin_out+=2;
return not_tested | (backward?unob:unof);
}
}
// Is this QQbar?
else if( incoming_id==pid::gluon ){
if( is_valid_impact_factor(
begin_out->type, (begin_out+1)->type, true, W_change )
){
// veto Higgs inside qqx
assert((begin_out+1)<end_out);
if( !boson.empty() && boson.front().type == ParticleID::h
){
if( (backward && boson.front().rapidity() < (begin_out+1)->rapidity())
||(!backward && boson.front().rapidity() > (begin_out+1)->rapidity()))
return non_resummable;
}
begin_out+=2;
return not_tested | (backward?qqxexb:qqxexf);
}
}
}
return non_resummable;
}
//! Returns all possible classifications from central emissions
// the beginning points are changed s.t. after the the classification they
// point to the end of the emission chain
// sets W_change: + if Wp change
// 0 if no change
// - if Wm change
template<class OutIterator>
size_t possible_central(
OutIterator & begin_out, OutIterator const & end_out,
int & W_change, std::vector<Particle> const & boson,
OutIterator & qqx_pos
){
using namespace event_type;
assert(boson.size() < 2);
// if we already passed the central chain,
// then it is not a valid all-order state
if(std::distance(begin_out, end_out) < 0) return non_resummable;
// keep track of all states that we don't test
size_t possible = unob | unof
| qqxexb | qqxexf;
// Find the first non-gluon/non-FKL
while( (begin_out->type==pid::gluon) && (begin_out<end_out) ){
++begin_out;
}
// end of chain -> FKL
if( begin_out==end_out ){
return possible | FKL;
}
// is this a qqbar-pair?
// needs two partons in two separate jets
if( is_valid_impact_factor(
begin_out->type, (begin_out+1)->type, true, W_change )
){
// veto Higgs inside qqx
if( !boson.empty() && boson.front().type == ParticleID::h
&& boson.front().rapidity() > begin_out->rapidity()
&& boson.front().rapidity() < (begin_out+1)->rapidity()
){
return non_resummable;
}
qqx_pos=begin_out;
begin_out+=2;
// remaining chain should be pure gluon/FKL
for(; begin_out<end_out; ++begin_out){
if(begin_out->type != pid::gluon) return non_resummable;
}
return possible | qqxmid;
}
return non_resummable;
}
bool invalid_jet(std::unordered_set<int> & other, int const idx){
if(idx<0) return true;
if(other.find(idx) != other.cend()) return true;
other.insert(idx);
return false;
}
bool jets_ok( size_t const final_type,
std::vector<int> const & jet_idx, size_t const qqx_pos
){
using namespace event_type;
std::unordered_set<int> other;
auto idx_begin{jet_idx.cbegin()};
auto idx_end{jet_idx.crbegin()};
// always seperate extremal jets
if(invalid_jet(other, *idx_begin)) return false;
if(invalid_jet(other, *idx_end)) return false;
// unob -> second parton in own jet
if( (final_type & (unob | qqxexb))
&& invalid_jet(other, *(idx_begin+1)) ) return false;
if( (final_type & (unof | qqxexf))
&& invalid_jet(other, *(idx_end+1)) ) return false;
assert( !(final_type & qqxmid) || jet_idx.size()>qqx_pos+1 );
if( (final_type & qqxmid)
&& ( invalid_jet(other, *(idx_begin+qqx_pos))
|| invalid_jet(other, *(idx_begin+qqx_pos+1)) ) ) return false;
return true;
}
/**
* \brief Checks for all event types
* @param ev Event
* @returns Event Type
*
*/
event_type::EventType classify(Event const & ev){
using namespace event_type;
if(! has_2_jets(ev))
return no_2_jets;
// currently we can't handle multiple boson states in the ME. So they are
// considered "bad_final_state" even though the "classify" could work with
// them.
if(! final_state_ok(ev.outgoing()))
return bad_final_state;
// initialise variables
auto const & in = ev.incoming();
auto const & out = filter_partons(ev.outgoing());
assert(std::distance(begin(in), end(in)) == 2);
assert(out.size() >= 2);
assert(std::distance(begin(out), end(out)) >= 2);
assert(std::is_sorted(begin(out), end(out), rapidity_less{}));
auto const boson{ filter_AWZH_bosons(ev.outgoing()) };
// we only allow one boson through final_state_ok
assert(boson.size()<=1);
// keep track of potential W couplings, at the end the sum should be 0
int remaining_Wp = 0;
int remaining_Wm = 0;
if(!boson.empty() && abs(boson.front().type) == ParticleID::Wp ){
if(boson.front().type>0) ++remaining_Wp;
else ++remaining_Wm;
}
int W_change = 0;
// range for current checks
auto begin_out{out.cbegin()};
auto end_out{out.crbegin()};
size_t final_type = ~(no_2_jets | bad_final_state);
// check forward impact factor
final_type &= possible_impact_factors(
in.front().type,
begin_out, end_out.base(),
W_change, boson, true );
if( final_type == non_resummable )
return non_resummable;
if(W_change>0) remaining_Wp-=W_change;
else if(W_change<0) remaining_Wm+=W_change;
W_change = 0;
// check backward impact factor
final_type &= possible_impact_factors(
in.back().type,
end_out, std::make_reverse_iterator(begin_out),
W_change, boson, false );
if( final_type == non_resummable )
return non_resummable;
if(W_change>0) remaining_Wp-=W_change;
else if(W_change<0) remaining_Wm+=W_change;
W_change = 0;
// check central emissions
auto qqx_pos{out.cend()};
final_type &= possible_central(
begin_out, end_out.base(), W_change, boson, qqx_pos );
if( final_type == non_resummable )
return non_resummable;
assert( !(final_type&qqxmid) || qqx_pos != out.cend() );
if(W_change>0) remaining_Wp-=W_change;
else if(W_change<0) remaining_Wm+=W_change;
// Check whether the right number of Ws are present
if( remaining_Wp != 0 || remaining_Wm != 0 ) return non_resummable;
// result has to be unique
if( (final_type & (final_type-1)) != 0) return non_resummable;
// check jet configurations
if(!jets_ok( final_type,
ev.particle_jet_indices( ev.jets() ),
std::distance( out.cbegin(), qqx_pos) ))
return non_resummable;
+ // check that each sub processes is implemented
+ // (has to be done at the end)
+ if( (final_type & ~implemented_types(boson)) != 0 )
+ return non_resummable;
+
return static_cast<EventType>(final_type);
}
//@}
Particle extract_particle(LHEF::HEPEUP const & hepeup, int i){
const ParticleID id = static_cast<ParticleID>(hepeup.IDUP[i]);
const fastjet::PseudoJet momentum{
hepeup.PUP[i][0], hepeup.PUP[i][1],
hepeup.PUP[i][2], hepeup.PUP[i][3]
};
if(is_parton(id))
return Particle{ id, std::move(momentum), hepeup.ICOLUP[i] };
return Particle{ id, std::move(momentum), {} };
}
bool is_decay_product(std::pair<int, int> const & mothers){
if(mothers.first == 0) return false;
return mothers.second == 0 || mothers.first == mothers.second;
}
} // namespace anonymous
Event::EventData::EventData(LHEF::HEPEUP const & hepeup){
parameters.central = EventParameters{
hepeup.scales.mur, hepeup.scales.muf, hepeup.weight()
};
size_t in_idx = 0;
for (int i = 0; i < hepeup.NUP; ++i) {
// skip decay products
// we will add them later on, but we have to ensure that
// the decayed particle is added before
if(is_decay_product(hepeup.MOTHUP[i])) continue;
auto particle = extract_particle(hepeup, i);
// needed to identify mother particles for decay products
particle.p.set_user_index(i+1);
if(hepeup.ISTUP[i] == status_in){
if(in_idx > incoming.size()) {
throw std::invalid_argument{
"Event has too many incoming particles"
};
}
incoming[in_idx++] = std::move(particle);
}
else outgoing.emplace_back(std::move(particle));
}
// add decay products
for (int i = 0; i < hepeup.NUP; ++i) {
if(!is_decay_product(hepeup.MOTHUP[i])) continue;
const int mother_id = hepeup.MOTHUP[i].first;
const auto mother = std::find_if(
begin(outgoing), end(outgoing),
[mother_id](Particle const & particle){
return particle.p.user_index() == mother_id;
}
);
if(mother == end(outgoing)){
throw std::invalid_argument{"invalid decay product parent"};
}
const int mother_idx = std::distance(begin(outgoing), mother);
assert(mother_idx >= 0);
decays[mother_idx].emplace_back(extract_particle(hepeup, i));
}
}
Event::Event(
UnclusteredEvent const & ev,
fastjet::JetDefinition const & jet_def, double const min_jet_pt
):
Event( Event::EventData{
ev.incoming, ev.outgoing, ev.decays,
Parameters<EventParameters>{ev.central, ev.variations}
}.cluster(jet_def, min_jet_pt) )
{}
//! @TODO remove in HEJ 2.2.0
UnclusteredEvent::UnclusteredEvent(LHEF::HEPEUP const & hepeup){
Event::EventData const evData{hepeup};
incoming = evData.incoming;
outgoing = evData.outgoing;
decays = evData.decays;
central = evData.parameters.central;
variations = evData.parameters.variations;
}
void Event::EventData::sort(){
// sort particles
std::sort(
begin(incoming), end(incoming),
[](Particle o1, Particle o2){return o1.p.pz()<o2.p.pz();}
);
auto old_outgoing = std::move(outgoing);
std::vector<size_t> idx(old_outgoing.size());
std::iota(idx.begin(), idx.end(), 0);
std::sort(idx.begin(), idx.end(), [&old_outgoing](size_t i, size_t j){
return old_outgoing[i].rapidity() < old_outgoing[j].rapidity();
});
outgoing.clear();
outgoing.reserve(old_outgoing.size());
for(size_t i: idx) {
outgoing.emplace_back(std::move(old_outgoing[i]));
}
// find decays again
if(!decays.empty()){
auto old_decays = std::move(decays);
decays.clear();
for(size_t i=0; i<idx.size(); ++i) {
auto decay = old_decays.find(idx[i]);
if(decay != old_decays.end())
decays.emplace(i, std::move(decay->second));
}
assert(old_decays.size() == decays.size());
}
}
namespace {
Particle reconstruct_boson(std::vector<Particle> const & leptons) {
Particle decayed_boson;
decayed_boson.p = leptons[0].p + leptons[1].p;
const int pidsum = leptons[0].type + leptons[1].type;
if(pidsum == +1) {
assert(is_antilepton(leptons[0]));
if(is_antineutrino(leptons[0])) {
throw not_implemented{"lepton-flavour violating final state"};
}
assert(is_neutrino(leptons[1]));
// charged antilepton + neutrino means we had a W+
decayed_boson.type = pid::Wp;
}
else if(pidsum == -1) {
assert(is_antilepton(leptons[0]));
if(is_neutrino(leptons[1])) {
throw not_implemented{"lepton-flavour violating final state"};
}
assert(is_antineutrino(leptons[0]));
// charged lepton + antineutrino means we had a W-
decayed_boson.type = pid::Wm;
}
else {
throw not_implemented{
"final state with leptons "
+ name(leptons[0].type)
+ " and "
+ name(leptons[1].type)
};
}
return decayed_boson;
}
}
void Event::EventData::reconstruct_intermediate() {
const auto begin_leptons = std::partition(
begin(outgoing), end(outgoing),
[](Particle const & p) {return !is_anylepton(p);}
);
if(begin_leptons == end(outgoing)) return;
assert(is_anylepton(*begin_leptons));
std::vector<Particle> leptons(begin_leptons, end(outgoing));
outgoing.erase(begin_leptons, end(outgoing));
if(leptons.size() != 2) {
throw not_implemented{"Final states with one or more than two leptons"};
}
std::sort(
begin(leptons), end(leptons),
[](Particle const & p0, Particle const & p1) {
return p0.type < p1.type;
}
);
outgoing.emplace_back(reconstruct_boson(leptons));
decays.emplace(outgoing.size()-1, std::move(leptons));
}
Event Event::EventData::cluster(
fastjet::JetDefinition const & jet_def, double const min_jet_pt
){
sort();
Event ev{ std::move(incoming), std::move(outgoing), std::move(decays),
std::move(parameters),
jet_def, min_jet_pt
};
assert(std::is_sorted(begin(ev.outgoing_), end(ev.outgoing_),
rapidity_less{}));
ev.type_ = classify(ev);
return ev;
}
Event::Event(
std::array<Particle, 2> && incoming,
std::vector<Particle> && outgoing,
std::unordered_map<size_t, std::vector<Particle>> && decays,
Parameters<EventParameters> && parameters,
fastjet::JetDefinition const & jet_def,
double const min_jet_pt
): incoming_{std::move(incoming)},
outgoing_{std::move(outgoing)},
decays_{std::move(decays)},
parameters_{std::move(parameters)},
cs_{ to_PseudoJet( filter_partons(outgoing_) ), jet_def },
min_jet_pt_{min_jet_pt}
{
jets_ = sorted_by_rapidity(cs_.inclusive_jets(min_jet_pt_));
}
namespace {
// check that Particles have a reasonable colour
bool correct_colour(Particle const & part){
ParticleID id{ part.type };
if(!is_parton(id))
return !part.colour;
if(!part.colour)
return false;
Colour const & col{ *part.colour };
if(is_quark(id))
return col.first != 0 && col.second == 0;
if(is_antiquark(id))
return col.first == 0 && col.second != 0;
assert(id==ParticleID::gluon);
return col.first != 0 && col.second != 0 && col.first != col.second;
}
}
bool Event::is_leading_colour() const {
if( !correct_colour(incoming()[0]) || !correct_colour(incoming()[1]) )
return false;
Colour line_colour = *incoming()[0].colour;
std::swap(line_colour.first, line_colour.second);
for(auto const & part: outgoing()){
// reasonable colour
if(!correct_colour(part))
return false;
if(!is_parton(part)) // skip colour neutral particles
continue;
// if possible connect to line
if( line_colour.first == part.colour->second )
line_colour.first = part.colour->first;
else if( line_colour.second == part.colour->first )
line_colour.second = part.colour->second;
else
return false;
// no colour singlet exchange/disconnected diagram
if(line_colour.first == line_colour.second)
return false;
}
return (incoming()[1].colour->first == line_colour.first)
&& (incoming()[1].colour->second == line_colour.second);
}
namespace {
void connect_incoming(Particle & in, int & colour, int & anti_colour){
in.colour = std::make_pair(anti_colour, colour);
// gluon
if(in.type == pid::gluon)
return;
if(in.type > 0){
// quark
assert(is_quark(in));
in.colour->second = 0;
colour*=-1;
return;
}
// anti-quark
assert(is_antiquark(in));
in.colour->first = 0;
anti_colour*=-1;
return;
}
}
bool Event::generate_colours(RNG & ran){
// generate only for HEJ events
if(!event_type::is_resummable(type()))
return false;
assert(std::is_sorted(
begin(outgoing()), end(outgoing()), rapidity_less{}));
assert(incoming()[0].pz() < incoming()[1].pz());
// positive (anti-)colour -> can connect
// negative (anti-)colour -> not available/used up by (anti-)quark
int colour = COLOUR_OFFSET;
int anti_colour = colour+1;
// initialise first
connect_incoming(incoming_[0], colour, anti_colour);
for(auto & part: outgoing_){
assert(colour>0 || anti_colour>0);
if(part.type == ParticleID::gluon){
// gluon
if(colour>0 && anti_colour>0){
// on g line => connect to colour OR anti-colour (random)
if(ran.flat() < 0.5){
part.colour = std::make_pair(colour+2,colour);
colour+=2;
} else {
part.colour = std::make_pair(anti_colour, anti_colour+2);
anti_colour+=2;
}
} else if(colour > 0){
// on q line => connect to available colour
part.colour = std::make_pair(colour+2, colour);
colour+=2;
} else {
assert(colour<0 && anti_colour>0);
// on qx line => connect to available anti-colour
part.colour = std::make_pair(anti_colour, anti_colour+2);
anti_colour+=2;
}
} else if(is_quark(part)) {
// quark
assert(anti_colour>0);
if(colour>0){
// on g line => connect and remove anti-colour
part.colour = std::make_pair(anti_colour, 0);
anti_colour+=2;
anti_colour*=-1;
} else {
// on qx line => new colour
colour*=-1;
part.colour = std::make_pair(colour, 0);
}
} else if(is_antiquark(part)) {
// anti-quark
assert(colour>0);
if(anti_colour>0){
// on g line => connect and remove colour
part.colour = std::make_pair(0, colour);
colour+=2;
colour*=-1;
} else {
// on q line => new anti-colour
anti_colour*=-1;
part.colour = std::make_pair(0, anti_colour);
}
} else { // not a parton
assert(!is_parton(part));
part.colour = {};
}
}
// Connect last
connect_incoming(incoming_[1], anti_colour, colour);
assert(is_leading_colour());
return true;
} // generate_colours
Event::ConstPartonIterator Event::begin_partons() const {
return cbegin_partons();
};
Event::ConstPartonIterator Event::cbegin_partons() const {
return boost::make_filter_iterator(
static_cast<bool (*)(Particle const &)>(is_parton),
cbegin(outgoing()),
cend(outgoing())
);
};
Event::ConstPartonIterator Event::end_partons() const {
return cend_partons();
};
Event::ConstPartonIterator Event::cend_partons() const {
return boost::make_filter_iterator(
static_cast<bool (*)(Particle const &)>(is_parton),
cend(outgoing()),
cend(outgoing())
);
};
namespace {
void print_momentum(std::ostream & os, fastjet::PseudoJet const & part){
const std::streamsize orig_prec = os.precision();
os <<std::scientific<<std::setprecision(6) << "["
<<std::setw(13)<<std::right<< part.px() << ", "
<<std::setw(13)<<std::right<< part.py() << ", "
<<std::setw(13)<<std::right<< part.pz() << ", "
<<std::setw(13)<<std::right<< part.E() << "]"<< std::fixed;
os.precision(orig_prec);
}
void print_colour(std::ostream & os, optional<Colour> const & col){
if(!col)
os << "(no color)"; // American spelling for better alignment
else
os << "(" <<std::setw(3)<<std::right<< col->first
<< ", " <<std::setw(3)<<std::right<< col->second << ")";
}
}
std::ostream& operator<<(std::ostream & os, Event const & ev){
const std::streamsize orig_prec = os.precision();
os <<std::setprecision(4)<<std::fixed;
os << "########## " << event_type::name(ev.type()) << " ##########" << std::endl;
os << "Incoming particles:\n";
for(auto const & in: ev.incoming()){
os <<std::setw(3)<< in.type << ": ";
print_colour(os, in.colour);
os << " ";
print_momentum(os, in.p);
os << std::endl;
}
os << "\nOutgoing particles: " << ev.outgoing().size() << "\n";
for(auto const & out: ev.outgoing()){
os <<std::setw(3)<< out.type << ": ";
print_colour(os, out.colour);
os << " ";
print_momentum(os, out.p);
os << " => rapidity="
<<std::setw(7)<<std::right<< out.rapidity() << std::endl;
}
os << "\nForming Jets: " << ev.jets().size() << "\n";
for(auto const & jet: ev.jets()){
print_momentum(os, jet);
os << " => rapidity="
<<std::setw(7)<<std::right<< jet.rapidity() << std::endl;
}
if(ev.decays().size() > 0 ){
os << "\nDecays: " << ev.decays().size() << "\n";
for(auto const & decay: ev.decays()){
os <<std::setw(3)<< ev.outgoing()[decay.first].type
<< " (" << decay.first << ") to:\n";
for(auto const & out: decay.second){
os <<" "<<std::setw(3)<< out.type << ": ";
print_momentum(os, out.p);
os << " => rapidity="
<<std::setw(7)<<std::right<< out.rapidity() << std::endl;
}
}
}
os << std::defaultfloat;
os.precision(orig_prec);
return os;
}
double shat(Event const & ev){
return (ev.incoming()[0].p + ev.incoming()[1].p).m2();
}
LHEF::HEPEUP to_HEPEUP(Event const & event, LHEF::HEPRUP * heprup){
LHEF::HEPEUP result;
result.heprup = heprup;
result.weights = {{event.central().weight, nullptr}};
for(auto const & var: event.variations()){
result.weights.emplace_back(var.weight, nullptr);
}
size_t num_particles = event.incoming().size() + event.outgoing().size();
for(auto const & decay: event.decays()) num_particles += decay.second.size();
result.NUP = num_particles;
// the following entries are pretty much meaningless
result.IDPRUP = event.type(); // event type
result.AQEDUP = 1./128.; // alpha_EW
//result.AQCDUP = 0.118 // alpha_QCD
// end meaningless part
result.XWGTUP = event.central().weight;
result.SCALUP = event.central().muf;
result.scales.muf = event.central().muf;
result.scales.mur = event.central().mur;
result.scales.SCALUP = event.central().muf;
result.pdfinfo.p1 = event.incoming().front().type;
result.pdfinfo.p2 = event.incoming().back().type;
result.pdfinfo.scale = event.central().muf;
result.IDUP.reserve(num_particles); // PID
result.ISTUP.reserve(num_particles); // status (in, out, decay)
result.PUP.reserve(num_particles); // momentum
result.MOTHUP.reserve(num_particles); // index mother particle
result.ICOLUP.reserve(num_particles); // colour
// incoming
std::array<Particle, 2> incoming{ event.incoming() };
// First incoming should be positive pz according to LHE standard
// (or at least most (everyone?) do it this way, and Pythia assumes it)
if(incoming[0].pz() < incoming[1].pz())
std::swap(incoming[0], incoming[1]);
for(Particle const & in: incoming){
result.IDUP.emplace_back(in.type);
result.ISTUP.emplace_back(status_in);
result.PUP.push_back({in.p[0], in.p[1], in.p[2], in.p[3], in.p.m()});
result.MOTHUP.emplace_back(0, 0);
assert(in.colour);
result.ICOLUP.emplace_back(*in.colour);
}
// outgoing
for(size_t i = 0; i < event.outgoing().size(); ++i){
Particle const & out = event.outgoing()[i];
result.IDUP.emplace_back(out.type);
const int status = event.decays().count(i)?status_decayed:status_out;
result.ISTUP.emplace_back(status);
result.PUP.push_back({out.p[0], out.p[1], out.p[2], out.p[3], out.p.m()});
result.MOTHUP.emplace_back(1, 2);
if(out.colour)
result.ICOLUP.emplace_back(*out.colour);
else{
assert(is_AWZH_boson(out));
result.ICOLUP.emplace_back(std::make_pair(0,0));
}
}
// decays
for(auto const & decay: event.decays()){
for(auto const out: decay.second){
result.IDUP.emplace_back(out.type);
result.ISTUP.emplace_back(status_out);
result.PUP.push_back({out.p[0], out.p[1], out.p[2], out.p[3], out.p.m()});
const size_t mother_idx = 1 + event.incoming().size() + decay.first;
result.MOTHUP.emplace_back(mother_idx, mother_idx);
result.ICOLUP.emplace_back(0,0);
}
}
assert(result.ICOLUP.size() == num_particles);
static constexpr double unknown_spin = 9.; //per Les Houches accord
result.VTIMUP = std::vector<double>(num_particles, unknown_spin);
result.SPINUP = result.VTIMUP;
return result;
}
}
diff --git a/t/classify_ref_4j b/t/classify_ref_4j
index 701338a..056dd0f 100644
--- a/t/classify_ref_4j
+++ b/t/classify_ref_4j
@@ -1,3255 +1,3255 @@
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diff --git a/t/test_classify.cc b/t/test_classify.cc
index ede2728..9e3ff52 100644
--- a/t/test_classify.cc
+++ b/t/test_classify.cc
@@ -1,983 +1,991 @@
/**
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include <iostream>
#include <random>
#include "HEJ/Event.hh"
#include "HEJ/exceptions.hh"
#define ASSERT(x) if(!(x)) { \
throw std::logic_error("Assertion '" #x "' failed."); \
}
namespace {
const fastjet::JetDefinition jet_def{fastjet::JetAlgorithm::antikt_algorithm, 0.4};
const double min_jet_pt{30.};
const std::array<std::string, 6> all_quarks{"-4","-1","1","2","3","4"};
const std::array<std::string, 7> all_partons{"g","-2","-1","1","2","3","4"};
const std::array<std::string, 3> all_bosons{"h", "Wp", "Wm"};
static std::mt19937_64 ran{0};
void shuffle_particles(HEJ::Event::EventData & ev) {
// incoming
std::shuffle(begin(ev.incoming), end(ev.incoming), ran);
// outgoing (through index)
auto old_outgoing = std::move(ev.outgoing);
std::vector<size_t> idx(old_outgoing.size());
std::iota(idx.begin(), idx.end(), 0);
std::shuffle(begin(idx), end(idx), ran);
ev.outgoing.clear();
ev.outgoing.reserve(old_outgoing.size());
for(size_t i: idx) {
ev.outgoing.emplace_back(std::move(old_outgoing[i]));
}
// find decays again
if(!ev.decays.empty()){
auto old_decays = std::move(ev.decays);
ev.decays.clear();
for(size_t i=0; i<idx.size(); ++i) {
auto decay = old_decays.find(idx[i]);
if(decay != old_decays.end())
ev.decays.emplace(i, std::move(decay->second));
}
}
}
// if pos_boson = -1 (or not implemented) -> no boson
// njet==7 is special: has less jets, i.e. multiple parton in one jet,
// pos_boson < 0 to select process (see list for details)
HEJ::Event::EventData get_process(int const njet, int const pos_boson){
using namespace HEJ::pid;
HEJ::Event::EventData ev;
if(njet == 0){ // jet idx: -1 -1
ev.outgoing.push_back({gluon, { -24, 12, -57, 63}, {}});
ev.outgoing.push_back({gluon, { 24, -12, 41, 49}, {}});
ev.incoming[0] = {gluon, { 0, 0, -64, 64}, {}};
ev.incoming[1] = {gluon, { 0, 0, 48, 48}, {}};
return ev;
}
else if(njet == 1){ // jet idx: 0 -1 -1
ev.outgoing.push_back({gluon, { 23, 28, -44, 57}, {}});
ev.outgoing.push_back({gluon, { -11, -24, -12, 29}, {}});
ev.outgoing.push_back({gluon, { -12, -4, 39, 41}, {}});
ev.incoming[0] = {gluon, { 0, 0, -72, 72}, {}};
ev.incoming[1] = {gluon, { 0, 0, 55, 55}, {}};
return ev;
}
else if(njet == 2){
switch(pos_boson){
case 0:
ev.outgoing.push_back({higgs, { 198, 33, -170, 291}, {}});
ev.outgoing.push_back({gluon, {-154, 68, 44, 174}, {}});
ev.outgoing.push_back({gluon, { -44, -101, 88, 141}, {}});
ev.incoming[0] = {gluon, { 0, 0, -322, 322}, {}};
ev.incoming[1] = {gluon, { 0, 0, 284, 284}, {}};
return ev;
case 1:
ev.outgoing.push_back({gluon, { -6, 82, -159, 179}, {}});
ev.outgoing.push_back({higgs, { 195, -106, 74, 265}, {}});
ev.outgoing.push_back({gluon, {-189, 24, 108, 219}, {}});
ev.incoming[0] = {gluon, { 0, 0, -320, 320}, {}};
ev.incoming[1] = {gluon, { 0, 0, 343, 343}, {}};
return ev;
case 2:
ev.outgoing.push_back({gluon, { -80, -80, -140, 180}, {}});
ev.outgoing.push_back({gluon, { -60, -32, 0, 68}, {}});
ev.outgoing.push_back({higgs, { 140, 112, 177, 281}, {}});
ev.incoming[0] = {gluon, { 0, 0, -246, 246}, {}};
ev.incoming[1] = {gluon, { 0, 0, 283, 283}, {}};
return ev;
default:
ev.outgoing.push_back({gluon, { -72, 24, 18, 78}, {}});
ev.outgoing.push_back({gluon, { 72, -24, 74, 106}, {}});
ev.incoming[0] = {gluon, { 0, 0, -46, 46}, {}};
ev.incoming[1] = {gluon, { 0, 0, 138, 138}, {}};
return ev;
}
}
if(njet == 3){
switch(pos_boson){
case 0:
ev.outgoing.push_back({higgs, { 152, -117, -88, 245}, {}});
ev.outgoing.push_back({gluon, {-146, 62, -11, 159}, {}});
ev.outgoing.push_back({gluon, { 126, -72, 96, 174}, {}});
ev.outgoing.push_back({gluon, {-132, 127, 144, 233}, {}});
ev.incoming[0] = {gluon, { 0, 0, -335, 335}, {}};
ev.incoming[1] = {gluon, { 0, 0, 476, 476}, {}};
return ev;
case 1:
ev.outgoing.push_back({gluon, {-191, 188, -128, 297}, {}});
ev.outgoing.push_back({higgs, { 199, 72, -76, 257}, {}});
ev.outgoing.push_back({gluon, { 184, -172, -8, 252}, {}});
ev.outgoing.push_back({gluon, {-192, -88, 54, 218}, {}});
ev.incoming[0] = {gluon, { 0, 0, -591, 591}, {}};
ev.incoming[1] = {gluon, { 0, 0, 433, 433}, {}};
return ev;
case 2:
ev.outgoing.push_back({gluon, { -42, 18, -49, 67}, {}});
ev.outgoing.push_back({gluon, { -12, -54, -28, 62}, {}});
ev.outgoing.push_back({higgs, { 99, 32, -16, 163}, {}});
ev.outgoing.push_back({gluon, { -45, 4, 72, 85}, {}});
ev.incoming[0] = {gluon, { 0, 0, -199, 199}, {}};
ev.incoming[1] = {gluon, { 0, 0, 178, 178}, {}};
return ev;
case 3:
ev.outgoing.push_back({gluon, { -65, -32, -76, 105}, {}});
ev.outgoing.push_back({gluon, { -22, 31, -34, 51}, {}});
ev.outgoing.push_back({gluon, { -12, -67, -36, 77}, {}});
ev.outgoing.push_back({higgs, { 99, 68, -4, 173}, {}});
ev.incoming[0] = {gluon, { 0, 0, -278, 278}, {}};
ev.incoming[1] = {gluon, { 0, 0, 128, 128}, {}};
return ev;
default:
ev.outgoing.push_back({gluon, { -90, -135, 30, 165}, {}});
ev.outgoing.push_back({gluon, {-108, 198, 76, 238}, {}});
ev.outgoing.push_back({gluon, { 198, -63, 126, 243}, {}});
ev.incoming[0] = {gluon, { 0, 0, -207, 207}, {}};
ev.incoming[1] = {gluon, { 0, 0, 439, 439}, {}};
return ev;
}
}
if(njet == 4){
switch(pos_boson){
case 0:
ev.outgoing.push_back({higgs, { 199, 72, -76, 257}, {}});
ev.outgoing.push_back({gluon, {-200, -155, -64, 261}, {}});
ev.outgoing.push_back({gluon, { 198, 194, 57, 283}, {}});
ev.outgoing.push_back({gluon, { 1, 32, 8, 33}, {}});
ev.outgoing.push_back({gluon, {-198, -143, 186, 307}, {}});
ev.incoming[0] = {gluon, { 0, 0, -515, 515}, {}};
ev.incoming[1] = {gluon, { 0, 0, 626, 626}, {}};
return ev;
case 1:
ev.outgoing.push_back({gluon, { 198, 61, -162, 263}, {}});
ev.outgoing.push_back({higgs, { 199, 72, -76, 257}, {}});
ev.outgoing.push_back({gluon, {-200, 135, 144, 281}, {}});
ev.outgoing.push_back({gluon, {-198, -186, 171, 321}, {}});
ev.outgoing.push_back({gluon, { 1, -82, 122, 147}, {}});
ev.incoming[0] = {gluon, { 0, 0, -535, 535}, {}};
ev.incoming[1] = {gluon, { 0, 0, 734, 734}, {}};
return ev;
case 2:
ev.outgoing.push_back({gluon, {-180, -27, -164, 245}, {}});
ev.outgoing.push_back({gluon, {-108, 78, -36, 138}, {}});
ev.outgoing.push_back({higgs, { 196, -189, 68, 307}, {}});
ev.outgoing.push_back({gluon, {-107, 136, 76, 189}, {}});
ev.outgoing.push_back({gluon, { 199, 2, 178, 267}, {}});
ev.incoming[0] = {gluon, { 0, 0, -512, 512}, {}};
ev.incoming[1] = {gluon, { 0, 0, 634, 634}, {}};
return ev;
case 3:
ev.outgoing.push_back({gluon, { -12, -30, -84, 90}, {}});
ev.outgoing.push_back({gluon, { -72, 22, -96, 122}, {}});
ev.outgoing.push_back({gluon, { 68, 0, -51, 85}, {}});
ev.outgoing.push_back({higgs, { 64, 72, -81, 177}, {}});
ev.outgoing.push_back({gluon, { -48, -64, 84, 116}, {}});
ev.incoming[0] = {gluon, { 0, 0, -409, 409}, {}};
ev.incoming[1] = {gluon, { 0, 0, 181, 181}, {}};
return ev;
case 4:
ev.outgoing.push_back({gluon, { -72, -49, -72, 113}, {}});
ev.outgoing.push_back({gluon, { -48, 0, -36, 60}, {}});
ev.outgoing.push_back({gluon, { -12, 54, -36, 66}, {}});
ev.outgoing.push_back({gluon, { 68, -77, -56, 117}, {}});
ev.outgoing.push_back({higgs, { 64, 72, -81, 177}, {}});
ev.incoming[0] = {gluon, { 0, 0, -407, 407}, {}};
ev.incoming[1] = {gluon, { 0, 0, 126, 126}, {}};
return ev;
default:
ev.outgoing.push_back({gluon, { 248, -56, -122, 282}, {}});
ev.outgoing.push_back({gluon, { 249, 30, -10, 251}, {}});
ev.outgoing.push_back({gluon, {-249, -18, 26, 251}, {}});
ev.outgoing.push_back({gluon, {-248, 44, 199, 321}, {}});
ev.incoming[0] = {gluon, { 0, 0, -506, 506}, {}};
ev.incoming[1] = {gluon, { 0, 0, 599, 599}, {}};
return ev;
}
}
if(njet == 6){
switch(pos_boson){
case 0:
ev.outgoing.push_back({higgs, { 349, 330, -94, 505}, {}});
ev.outgoing.push_back({gluon, {-315, -300, 0, 435}, {}});
ev.outgoing.push_back({gluon, { 347, 306, 18, 463}, {}});
ev.outgoing.push_back({gluon, {-249, -342, 162, 453}, {}});
ev.outgoing.push_back({gluon, { 345, 312, 284, 545}, {}});
ev.outgoing.push_back({gluon, {-324, -126, 292, 454}, {}});
ev.outgoing.push_back({gluon, {-153, -180, 304, 385}, {}});
ev.incoming[0] = {gluon, { 0, 0, -1137, 1137}, {}};
ev.incoming[1] = {gluon, { 0, 0, 2103, 2103}, {}};
return ev;
case 1:
ev.outgoing.push_back({gluon, { 242, 241, -182, 387}, {}});
ev.outgoing.push_back({higgs, { 243, 238, -190, 409}, {}});
ev.outgoing.push_back({gluon, {-218, -215, -74, 315}, {}});
ev.outgoing.push_back({gluon, {-224, -224, 112, 336}, {}});
ev.outgoing.push_back({gluon, { 241, 182, 154, 339}, {}});
ev.outgoing.push_back({gluon, { -53, -234, 126, 271}, {}});
ev.outgoing.push_back({gluon, {-231, 12, 156, 279}, {}});
ev.incoming[0] = {gluon, { 0, 0, -1117, 1117}, {}};
ev.incoming[1] = {gluon, { 0, 0, 1219, 1219}, {}};
return ev;
case 2:
ev.outgoing.push_back({gluon, { 151, 102, -42, 187}, {}});
ev.outgoing.push_back({gluon, { -86, -46, -17, 99}, {}});
ev.outgoing.push_back({higgs, { 152, 153, 0, 249}, {}});
ev.outgoing.push_back({gluon, { -60, -135, 64, 161}, {}});
ev.outgoing.push_back({gluon, { 150, 123, 110, 223}, {}});
ev.outgoing.push_back({gluon, {-154, -49, 98, 189}, {}});
ev.outgoing.push_back({gluon, {-153, -148, 144, 257}, {}});
ev.incoming[0] = {gluon, { 0, 0, -504, 504}, {}};
ev.incoming[1] = {gluon, { 0, 0, 861, 861}, {}};
return ev;
case 3:
ev.outgoing.push_back({gluon, { 198, 197, -66, 287}, {}});
ev.outgoing.push_back({gluon, {-198, -189, -54, 279}, {}});
ev.outgoing.push_back({gluon, {-200, -64, 2, 210}, {}});
ev.outgoing.push_back({higgs, { 199, 158, 6, 283}, {}});
ev.outgoing.push_back({gluon, {-199, -184, 172, 321}, {}});
ev.outgoing.push_back({gluon, { 196, 168, 177, 313}, {}});
ev.outgoing.push_back({gluon, { 4, -86, 92, 126}, {}});
ev.incoming[0] = {gluon, { 0, 0, -745, 745}, {}};
ev.incoming[1] = {gluon, { 0, 0, 1074, 1074}, {}};
return ev;
case 4:
ev.outgoing.push_back({gluon, { 151, 102, -42, 187}, {}});
ev.outgoing.push_back({gluon, { -86, -133, -14, 159}, {}});
ev.outgoing.push_back({gluon, {-154, -104, -8, 186}, {}});
ev.outgoing.push_back({gluon, { -60, 11, 0, 61}, {}});
ev.outgoing.push_back({higgs, { 152, 153, 0, 249}, {}});
ev.outgoing.push_back({gluon, { 150, 125, 90, 215}, {}});
ev.outgoing.push_back({gluon, {-153, -154, 126, 251}, {}});
ev.incoming[0] = {gluon, { 0, 0, -578, 578}, {}};
ev.incoming[1] = {gluon, { 0, 0, 730, 730}, {}};
return ev;
case 5:
ev.outgoing.push_back({gluon, { -15, -90, -94, 131}, {}});
ev.outgoing.push_back({gluon, { -11, 82, -74, 111}, {}});
ev.outgoing.push_back({gluon, { 23, -80, -64, 105}, {}});
ev.outgoing.push_back({gluon, { -48, -25, -36, 65}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -16, 101}, {}});
ev.outgoing.push_back({higgs, { 68, 92, -18, 170}, {}});
ev.outgoing.push_back({gluon, { -5, -78, 54, 95}, {}});
ev.incoming[0] = {gluon, { 0, 0, -513, 513}, {}};
ev.incoming[1] = {gluon, { 0, 0, 265, 265}, {}};
return ev;
case 6:
ev.outgoing.push_back({gluon, { 198, 197, -66, 287}, {}});
ev.outgoing.push_back({gluon, { 4, -84, -18, 86}, {}});
ev.outgoing.push_back({gluon, {-198, -60, -36, 210}, {}});
ev.outgoing.push_back({gluon, { 196, -78, -36, 214}, {}});
ev.outgoing.push_back({gluon, {-200, 45, 0, 205}, {}});
ev.outgoing.push_back({gluon, {-199, -178, 2, 267}, {}});
ev.outgoing.push_back({higgs, { 199, 158, 6, 283}, {}});
ev.incoming[0] = {gluon, { 0, 0, -850, 850}, {}};
ev.incoming[1] = {gluon, { 0, 0, 702, 702}, {}};
return ev;
default:
ev.outgoing.push_back({gluon, {-350, -112, -280, 462}, {}});
ev.outgoing.push_back({gluon, { 347, 266, -322, 543}, {}});
ev.outgoing.push_back({gluon, {-349, -314, -38, 471}, {}});
ev.outgoing.push_back({gluon, { 349, 348, 12, 493}, {}});
ev.outgoing.push_back({gluon, {-342, -54, 23, 347}, {}});
ev.outgoing.push_back({gluon, { 345, -134, 138, 395}, {}});
ev.incoming[0] = {gluon, { 0, 0, -1589, 1589}, {}};
ev.incoming[1] = {gluon, { 0, 0, 1122, 1122}, {}};
return ev;
}
}
if(njet == 7){
switch(pos_boson){
case -1: // jet idx: -1 0 1 2 3 4 5
ev.outgoing.push_back({gluon, { -11, -18, -42, 47}, {}});
ev.outgoing.push_back({gluon, { -15, 26, -18, 35}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { 23, -54, -6, 59}, {}});
ev.outgoing.push_back({gluon, { -5, -44, 8, 45}, {}});
ev.outgoing.push_back({gluon, { -48, -96, 44, 116}, {}});
ev.outgoing.push_back({gluon, { -12, 99, 88, 133}, {}});
ev.incoming[0] = {gluon, { 0, 0, -249, 249}, {}};
ev.incoming[1] = {gluon, { 0, 0, 299, 299}, {}};
return ev;
case -2: // jet idx: 0 1 2 3 4 -1 -1
ev.outgoing.push_back({gluon, { 23, -80, -64, 105}, {}});
ev.outgoing.push_back({gluon, { -5, -84, -12, 85}, {}});
ev.outgoing.push_back({gluon, { 68, 87, 24, 113}, {}});
ev.outgoing.push_back({gluon, { -12, 99, 88, 133}, {}});
ev.outgoing.push_back({gluon, { -48, -24, 62, 82}, {}});
ev.outgoing.push_back({gluon, { -11, -18, 42, 47}, {}});
ev.outgoing.push_back({gluon, { -15, 20, 60, 65}, {}});
ev.incoming[0] = {gluon, { 0, 0, -215, 215}, {}};
ev.incoming[1] = {gluon, { 0, 0, 415, 415}, {}};
return ev;
case -3: // jet idx: 0 0 1 2 3 4 5
ev.outgoing.push_back({gluon, { -5, -86, -70, 111}, {}});
ev.outgoing.push_back({gluon, { -15, -52, -36, 65}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -44, 109}, {}});
ev.outgoing.push_back({gluon, { -48, -60, 5, 77}, {}});
ev.outgoing.push_back({gluon, { -11, 92, 8, 93}, {}});
ev.outgoing.push_back({gluon, { 68, 87, 24, 113}, {}});
ev.outgoing.push_back({gluon, { 23, -80, 64, 105}, {}});
ev.incoming[0] = {gluon, { 0, 0, -361, 361}, {}};
ev.incoming[1] = {gluon, { 0, 0, 312, 312}, {}};
return ev;
case -4: // jet idx: 0 1 2 3 4 5 5
ev.outgoing.push_back({gluon, { -5, -40, -56, 69}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -88, 133}, {}});
ev.outgoing.push_back({gluon, { 23, -84, -72, 113}, {}});
ev.outgoing.push_back({gluon, { -11, 92, 8, 93}, {}});
ev.outgoing.push_back({gluon, { 68, 87, 24, 113}, {}});
ev.outgoing.push_back({gluon, { -15, -58, 30, 67}, {}});
ev.outgoing.push_back({gluon, { -48, -96, 96, 144}, {}});
ev.incoming[0] = {gluon, { 0, 0, -395, 395}, {}};
ev.incoming[1] = {gluon, { 0, 0, 337, 337}, {}};
return ev;
case -5: // jet idx: 0 1 -1 -1 2 3 4
ev.outgoing.push_back({gluon, { 23, -64, -80, 105}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -16, 101}, {}});
ev.outgoing.push_back({gluon, { -15, 20, 0, 25}, {}});
ev.outgoing.push_back({gluon, { -11, -10, 2, 15}, {}});
ev.outgoing.push_back({gluon, { 68, 87, 24, 113}, {}});
ev.outgoing.push_back({gluon, { -48, -72, 54, 102}, {}});
ev.outgoing.push_back({gluon, { -5, -60, 48, 77}, {}});
ev.incoming[0] = {gluon, { 0, 0, -253, 253}, {}};
ev.incoming[1] = {gluon, { 0, 0, 285, 285}, {}};
return ev;
case -6: // jet idx: 0 0 0 1 2 2 3
ev.outgoing.push_back({gluon, { -5, -60, -48, 77}, {}});
ev.outgoing.push_back({gluon, { -15, -52, -36, 65}, {}});
ev.outgoing.push_back({gluon, { -48, -96, -58, 122}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -16, 101}, {}});
ev.outgoing.push_back({gluon, { -11, 92, 8, 93}, {}});
ev.outgoing.push_back({gluon, { 23, -70, 14, 75}, {}});
ev.incoming[0] = {gluon, { 0, 0, -403, 403}, {}};
ev.incoming[1] = {gluon, { 0, 0, 243, 243}, {}};
return ev;
case -7: // jet idx: 0 1 1 2 2 3 4
ev.outgoing.push_back({gluon, { 23, -46, -46, 69}, {}});
ev.outgoing.push_back({gluon, { -15, -90, -70, 115}, {}});
ev.outgoing.push_back({gluon, { -5, -78, -54, 95}, {}});
ev.outgoing.push_back({gluon, { -11, 88, -28, 93}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -16, 101}, {}});
ev.outgoing.push_back({gluon, { -48, -60, 5, 77}, {}});
ev.outgoing.push_back({gluon, { 68, 87, 24, 113}, {}});
ev.incoming[0] = {gluon, { 0, 0, -424, 424}, {}};
ev.incoming[1] = {gluon, { 0, 0, 239, 239}, {}};
return ev;
case -8: // jet idx: 0 1 2 2 2 3 4
ev.outgoing.push_back({gluon, { 23, -84, -84, 121}, {}});
ev.outgoing.push_back({gluon, { -11, 92, -8, 93}, {}});
ev.outgoing.push_back({gluon, { -15, -36, 0, 39}, {}});
ev.outgoing.push_back({gluon, { -5, -62, 10, 63}, {}});
ev.outgoing.push_back({gluon, { -48, -96, 19, 109}, {}});
ev.outgoing.push_back({gluon, { 68, 87, 24, 113}, {}});
ev.outgoing.push_back({gluon, { -12, 99, 88, 133}, {}});
ev.incoming[0] = {gluon, { 0, 0, -311, 311}, {}};
ev.incoming[1] = {gluon, { 0, 0, 360, 360}, {}};
return ev;
case -9: // jet idx: 0 1 2 1 3 0 4
ev.outgoing.push_back({gluon, { -12, 99, -44, 109}, {}});
ev.outgoing.push_back({gluon, { -48, -80, -30, 98}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { -15, -90, -18, 93}, {}});
ev.outgoing.push_back({gluon, { 23, -70, -14, 75}, {}});
ev.outgoing.push_back({gluon, { -11, 92, -8, 93}, {}});
ev.outgoing.push_back({gluon, { -5, -38, 50, 63}, {}});
ev.incoming[0] = {gluon, { 0, 0, -366, 366}, {}};
ev.incoming[1] = {gluon, { 0, 0, 278, 278}, {}};
return ev;
case -10: // jet idx: 0 1 3 2 4 3 1
ev.outgoing.push_back({gluon, { 23, -80, -64, 105}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -44, 109}, {}});
ev.outgoing.push_back({gluon, { -15, -60, -20, 65}, {}});
ev.outgoing.push_back({gluon, { -48, -54, -16, 74}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { -5, -84, -12, 85}, {}});
ev.outgoing.push_back({gluon, { -11, 92, -8, 93}, {}});
ev.incoming[0] = {gluon, { 0, 0, -416, 416}, {}};
ev.incoming[1] = {gluon, { 0, 0, 228, 228}, {}};
return ev;
case -11: // jet idx: 0 1 2 3 3 4 2
ev.outgoing.push_back({gluon, { -48, -56, -48, 88}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { -5, -62, -10, 63}, {}});
ev.outgoing.push_back({gluon, { -11, 92, 8, 93}, {}});
ev.outgoing.push_back({gluon, { -12, 99, 16, 101}, {}});
ev.outgoing.push_back({gluon, { 23, -70, 14, 75}, {}});
ev.outgoing.push_back({gluon, { -15, -90, 18, 93}, {}});
ev.incoming[0] = {gluon, { 0, 0, -326, 326}, {}};
ev.incoming[1] = {gluon, { 0, 0, 300, 300}, {}};
return ev;
case -12: // jet idx: 0 1 0 2 3 4 5
ev.outgoing.push_back({gluon, { -15, -58, -30, 67}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { -48, -96, -19, 109}, {}});
ev.outgoing.push_back({gluon, { 23, -54, -6, 59}, {}});
ev.outgoing.push_back({gluon, { -11, 92, -8, 93}, {}});
ev.outgoing.push_back({gluon, { -12, 99, 88, 133}, {}});
ev.outgoing.push_back({gluon, { -5, -70, 86, 111}, {}});
ev.incoming[0] = {gluon, { 0, 0, -299, 299}, {}};
ev.incoming[1] = {gluon, { 0, 0, 386, 386}, {}};
return ev;
case -13: // jet idx: 0 1 2 2 2 3 0
ev.outgoing.push_back({gluon, { -11, 88, -28, 93}, {}});
ev.outgoing.push_back({gluon, { 68, 87, -24, 113}, {}});
ev.outgoing.push_back({gluon, { -48, -84, -21, 99}, {}});
ev.outgoing.push_back({gluon, { -15, -90, -18, 93}, {}});
ev.outgoing.push_back({gluon, { -5, -30, -6, 31}, {}});
ev.outgoing.push_back({gluon, { 23, -70, -14, 75}, {}});
ev.outgoing.push_back({gluon, { -12, 99, -16, 101}, {}});
ev.incoming[0] = {gluon, { 0, 0, -366, 366}, {}};
ev.incoming[1] = {gluon, { 0, 0, 239, 239}, {}};
return ev;
}
}
throw HEJ::unknown_option{"unkown process"};
}
bool couple_quark(std::string const & boson, std::string & quark){
if(abs(HEJ::to_ParticleID(boson)) == HEJ::ParticleID::Wp){
auto qflav{ HEJ::to_ParticleID(quark) };
if(!HEJ::is_anyquark(qflav)) return false;
const int W_charge = HEJ::to_ParticleID(boson)>0?1:-1;
if(W_charge*qflav < 0 && !(abs(qflav)%2)) return false; // not anti-down
if(W_charge*qflav > 0 && (abs(qflav)%2)) return false; // not up
quark=std::to_string(qflav-W_charge);
}
return true;
}
// create event corresponding from given Configuration
// overwrite_boson to force a specific boson position, indepentent from input
// (useful for njet == 7)
HEJ::Event parse_configuration(
std::array<std::string,2> const & in, std::vector<std::string> const & out,
int const overwrite_boson = 0
){
auto boson = std::find_if(out.cbegin(), out.cend(),
[](std::string id){ return !HEJ::is_parton(HEJ::to_ParticleID(id)); });
int const pos_boson = (overwrite_boson!=0)?overwrite_boson:
((boson == out.cend())?-1:std::distance(out.cbegin(), boson));
size_t njets = out.size();
if(boson != out.cend()) --njets;
HEJ::Event::EventData ev{get_process(njets, pos_boson)};
ASSERT((pos_boson<0) || (ev.outgoing[pos_boson].type == HEJ::ParticleID::higgs));
for(size_t i=0; i<out.size(); ++i){
ev.outgoing[i].type = HEJ::to_ParticleID(out[i]);
}
for(size_t i=0; i<in.size(); ++i){
ev.incoming[i].type = HEJ::to_ParticleID(in[i]);
}
shuffle_particles(ev);
return ev.cluster(jet_def, min_jet_pt);
}
bool match_expectation( HEJ::event_type::EventType expected,
std::array<std::string,2> const & in, std::vector<std::string> const & out,
int const overwrite_boson = 0
){
HEJ::Event ev{parse_configuration(in,out,overwrite_boson)};
if(ev.type() != expected){
std::cerr << "Expected type " << HEJ::event_type::name(expected)
<< " but found " << HEJ::event_type::name(ev.type()) << "\n" << ev;
auto jet_idx{ ev.particle_jet_indices(ev.jets()) };
std::cout << "Particle Jet indices: ";
for(int const i: jet_idx)
std::cout << i << " ";
std::cout << std::endl;
return false;
}
return true;
}
bool check_fkl(){
using namespace HEJ;
for(std::string const & first: all_partons) // all quark flavours
for(std::string const & last: all_partons){
for(int njet=2; njet<=6; ++njet){ // all multiplicities
if(njet==5) continue;
std::array<std::string,2> base_in{first,last};
std::vector<std::string> base_out(njet, "g");
base_out.front() = first;
base_out.back() = last;
if(!match_expectation(event_type::FKL, base_in, base_out))
return false;
for(auto const & boson: all_bosons) // any boson
for(int pos=0; pos<=njet; ++pos){ // at any position
auto in{base_in};
auto out{base_out};
// change quark flavours for W
const bool couple_idx = std::uniform_int_distribution<int>{0,1}(ran);
if(!couple_quark(boson, couple_idx?out.back():out.front()))
continue;
out.insert(out.begin()+pos, boson);
if(!match_expectation(event_type::FKL, in, out))
return false;
}
}
for(int i=-3; i>-13;--i){ // extremal parton inside jet
std::array<std::string,2> base_in{first,last};
std::vector<std::string> base_out(7, "g");
base_out.front() = first;
base_out.back() = last;
if(!match_expectation(event_type::FKL, base_in, base_out, i))
return false;
}
}
return true;
}
bool check_uno(){
using namespace HEJ;
auto const b{ event_type::unob };
auto const f{ event_type::unof };
for(std::string const & uno: all_quarks) // all quark flavours
for(std::string const & fkl: all_partons){
for(int njet=3; njet<=6; ++njet){ // all multiplicities >2
if(njet==5) continue;
for(int i=0; i<2; ++i){ // forward & backwards
std::array<std::string,2> base_in;
std::vector<std::string> base_out(njet, "g");
const int uno_pos = i?1:(njet-2);
const int fkl_pos = i?(njet-1):0;
base_in[i?0:1] = uno;
base_in[i?1:0] = fkl;
base_out[uno_pos] = uno;
base_out[fkl_pos] = fkl;
auto expectation{ i?b:f };
if( !match_expectation(expectation, base_in, base_out) )
return false;
for(auto const & boson: all_bosons){ // any boson
// at any position (higgs only inside FKL chain)
int start = 0;
int end = njet;
if(to_ParticleID(boson) == pid::higgs){
start = i?(uno_pos+1):fkl_pos;
end = i?(fkl_pos+1):uno_pos;
}
for(int pos=start; pos<=end; ++pos){
auto in{base_in};
auto out{base_out};
// change quark flavours for W
const bool couple_idx = std::uniform_int_distribution<int>{0,1}(ran);
if(!couple_quark(boson, couple_idx?out[fkl_pos]:out[uno_pos]))
continue;
out.insert(out.begin()+pos, boson);
if(!match_expectation(expectation, in, out))
return false;
}
}
}
}
// test allowed jet configurations
if(!(match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -3)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -4)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -5)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -5)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -6)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -7)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -7)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -8)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -8)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -9)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -10)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -11)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -11)
&& match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -12)
&& match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -12)
))
return false;
}
return true;
}
bool check_extremal_qqx(){
using namespace HEJ;
auto const b{ event_type::qqxexb };
auto const f{ event_type::qqxexf };
+ //! @FIXME Higgs does not implemented for qqx
+ std::array<std::string, 2> const bosons{"W+", "W-"};
for(std::string const & qqx: all_quarks) // all quark flavours
for(std::string const & fkl: all_partons){
std::string const qqx2{ std::to_string(HEJ::to_ParticleID(qqx)*-1) };
for(int njet=3; njet<=6; ++njet){ // all multiplicities >2
if(njet==5) continue;
for(int i=0; i<2; ++i){ // forward & backwards
std::array<std::string,2> base_in;
std::vector<std::string> base_out(njet, "g");
const int qqx_pos = i?0:(njet-2);
const int fkl_pos = i?(njet-1):0;
base_in[i?0:1] = "g";
base_in[i?1:0] = fkl;
base_out[fkl_pos] = fkl;
base_out[qqx_pos] = qqx;
base_out[qqx_pos+1] = qqx2;
auto expectation{ i?b:f };
- if( !match_expectation(expectation, base_in, base_out) )
- return false;
- for(auto const & boson: all_bosons){ // any boson
+ //! @FIXME pure jets does not implemented for qqx
+ // if( !match_expectation(expectation, base_in, base_out) )
+ // return false;
+ for(auto const & boson: bosons){ // all bosons
// at any position (higgs only inside FKL chain)
int start = 0;
int end = njet;
if(to_ParticleID(boson) == pid::higgs){
start = i?(qqx_pos+2):fkl_pos;
end = i?(fkl_pos+1):qqx_pos;
}
for(int pos=start; pos<=end; ++pos){
auto in{base_in};
auto out{base_out};
// change quark flavours for W
const bool couple_idx = std::uniform_int_distribution<int>{0,1}(ran);
if(couple_idx || !couple_quark(boson, out[fkl_pos]) ){
// (randomly) try couple to FKL, else fall-back to qqx
if(!couple_quark(boson, out[qqx_pos]))
couple_quark(boson, out[qqx_pos+1]);
}
out.insert(out.begin()+pos, boson);
if(!match_expectation(expectation, in, out))
return false;
}
}
}
}
// test allowed jet configurations
- if(!(match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -3)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -4)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -5)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -5)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -6)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -7)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -7)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -8)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -8)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -9)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -10)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -11)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -11)
- && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -12)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -12)
- ))
- return false;
+ //! @FIXME reactive for qqx with W
+ // if(!(match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -3)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -4)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -5)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -5)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -6)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -7)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -7)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -8)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -8)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -9)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -10)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -11)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -11)
+ // && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -12)
+ // && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -12)
+ // ))
+ // return false;
}
return true;
}
bool check_central_qqx(){
using namespace HEJ;
auto const t{ event_type::qqxmid };
+ //! @FIXME Higgs does not implemented for central qqx
+ std::array<std::string, 2> const bosons{"W+", "W-"};
for(std::string const & qqx: all_quarks) // all quark flavours
for(std::string const & fkl1: all_partons)
for(std::string const & fkl2: all_partons){
std::string const qqx2{ std::to_string(HEJ::to_ParticleID(qqx)*-1) };
for(int njet=4; njet<=6; ++njet){ // all multiplicities >3
if(njet==5) continue;
for(int qqx_pos=1; qqx_pos<njet-2; ++qqx_pos){ // any qqx position
std::array<std::string,2> base_in;
std::vector<std::string> base_out(njet, "g");
base_in[0] = fkl1;
base_in[1] = fkl2;
base_out.front() = fkl1;
base_out.back() = fkl2;
base_out[qqx_pos] = qqx;
base_out[qqx_pos+1] = qqx2;
- if( !match_expectation(t, base_in, base_out) )
- return false;
- for(auto const & boson: all_bosons) // any boson
+ //! @FIXME pure jets does not implemented for central qqx
+ // if( !match_expectation(t, base_in, base_out) )
+ // return false;
+ for(auto const & boson: bosons) // any boson
for(int pos=0; pos<=njet; ++pos){ // at any position
if( to_ParticleID(boson) == pid::higgs
&& (pos==qqx_pos || pos==qqx_pos+1) )
continue;
auto in{base_in};
auto out{base_out};
// change quark flavours for W
const int couple_idx{ std::uniform_int_distribution<int>{0,2}(ran) };
// (randomly) try couple to FKL, else fall-back to qqx
if( couple_idx == 0 && couple_quark(boson, out.front()) ){}
else if( couple_idx == 1 && couple_quark(boson, out.back()) ){}
else {
if(!couple_quark(boson, out[qqx_pos]))
couple_quark(boson, out[qqx_pos+1]);
}
out.insert(out.begin()+pos, boson);
if(!match_expectation(t, in, out))
return false;
}
}
}
// test allowed jet configurations (non exhaustive collection)
- if(!(match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -3)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -3)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -4)
- && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -4)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -5)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -6)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -7)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -7)
- && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -8)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -8)
- && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -9)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -9)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -10)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -10)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -11)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -12)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -12)
- ))
- return false;
+ //! @FIXME reactive for qqx with W
+ // if(!(match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -3)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -3)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -4)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -4)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -5)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -6)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -7)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -7)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -8)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -8)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -9)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -9)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -10)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -10)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -11)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -12)
+ // && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -12)
+ // ))
+ // return false;
}
return true;
}
// this checks a (non excessive) list of non-resummable states
bool check_non_resummable(){
auto type{ HEJ::event_type::non_resummable};
return
// 2j - crossing lines
match_expectation(type, {"g","2"}, {"2","g"})
&& match_expectation(type, {"-1","g"}, {"g","-1"})
&& match_expectation(type, {"1","-1"}, {"-1","1"})
&& match_expectation(type, {"g","2"}, {"2","g","h"})
&& match_expectation(type, {"1","2"}, {"2","h","1"})
&& match_expectation(type, {"1","-1"}, {"h","-1","1"})
&& match_expectation(type, {"g","2"}, {"Wp","1","g"})
&& match_expectation(type, {"1","-1"}, {"-2","Wp","1"})
&& match_expectation(type, {"4","g"}, {"g","3","Wp"})
&& match_expectation(type, {"1","-2"}, {"-1","Wm","1"})
&& match_expectation(type, {"g","3"}, {"4","g","Wm"})
&& match_expectation(type, {"1","3"}, {"Wm","4","1"})
// 2j - qqx
&& match_expectation(type, {"g","g"}, {"1","-1"})
&& match_expectation(type, {"g","g"}, {"-2","2","h"})
&& match_expectation(type, {"g","g"}, {"-4","Wp","3"})
&& match_expectation(type, {"g","g"}, {"Wm","-1","2"})
// 3j - crossing lines
&& match_expectation(type, {"g","4"}, {"4","g","g"})
&& match_expectation(type, {"-1","g"}, {"g","g","-1"})
&& match_expectation(type, {"1","3"}, {"3","g","1"})
&& match_expectation(type, {"-2","2"}, {"2","g","-2","h"})
&& match_expectation(type, {"-3","g"}, {"g","g","Wp","-4"})
&& match_expectation(type, {"1","-2"}, {"Wm","-1","g","1"})
&& match_expectation(type, {"-1","g"}, {"1","-1","-1"})
// higgs inside uno
&& match_expectation(type, {"-1","g"}, {"g","h","-1","g"})
&& match_expectation(type, {"-1","1"}, {"g","h","-1","1"})
&& match_expectation(type, {"g","2"}, {"g","2","h","g"})
&& match_expectation(type, {"-1","1"}, {"-1","1","h","g"})
// higgs outside uno
&& match_expectation(type, {"-1","g"}, {"h","g","-1","g"})
&& match_expectation(type, {"-1","1"}, {"-1","1","g","h"})
// higgs inside qqx
&& match_expectation(type, {"g","g"}, {"-1","h","1","g","g"})
&& match_expectation(type, {"g","g"}, {"g","-1","h","1","g"})
&& match_expectation(type, {"g","g"}, {"g","g","2","h","-2"})
// higgs outside qqx
&& match_expectation(type, {"g","g"}, {"h","-1","1","g","g"})
&& match_expectation(type, {"g","g"}, {"g","g","2","-2","h"})
// 4j - two uno
&& match_expectation(type, {"-2","2"}, {"g","-2","2","g"})
&& match_expectation(type, {"1","3"}, {"g","1","h","3","g"})
&& match_expectation(type, {"1","2"}, {"g","1","3","Wp","g"})
&& match_expectation(type, {"1","-2"}, {"g","Wm","1","-1","g"})
// 4j - two gluon outside
&& match_expectation(type, {"g","4"}, {"g","4","g","g"})
&& match_expectation(type, {"1","3"}, {"1","3","h","g","g"})
&& match_expectation(type, {"1","2"}, {"1","3","g","Wp","g"})
&& match_expectation(type, {"1","-2"}, {"1","Wm","-1","g","g"})
&& match_expectation(type, {"-1","g"}, {"g","g","-1","g"})
&& match_expectation(type, {"1","3"}, {"g","g","1","3","h"})
&& match_expectation(type, {"1","2"}, {"g","g","1","Wp","3"})
&& match_expectation(type, {"1","-2"}, {"Wm","g","g","1","-1"})
// 4j - ggx+uno
&& match_expectation(type, {"g","4"}, {"1","-1","4","g"})
&& match_expectation(type, {"2","g"}, {"g","2","-3","3"})
&& match_expectation(type, {"g","4"}, {"1","-1","h","4","g"})
&& match_expectation(type, {"2","g"}, {"g","2","-3","3","h"})
&& match_expectation(type, {"g","4"}, {"Wp","1","-1","3","g"})
&& match_expectation(type, {"2","g"}, {"g","2","-4","Wp","3"})
&& match_expectation(type, {"g","4"}, {"2","Wm","-1","4","g"})
&& match_expectation(type, {"2","g"}, {"g","2","Wp","-3","4"})
// 3j - crossing+uno
&& match_expectation(type, {"1","4"}, {"g","4","1"})
&& match_expectation(type, {"1","4"}, {"4","1","g"})
&& match_expectation(type, {"1","4"}, {"g","h","4","1"})
&& match_expectation(type, {"-1","-3"},{"Wm","g","-4","-1"})
&& match_expectation(type, {"1","4"}, {"3","1","Wp","g"})
&& match_expectation(type, {"1","4"}, {"3","1","g","h"})
// 3j - crossing+qqx
&& match_expectation(type, {"1","g"}, {"-1","1","g","1"})
&& match_expectation(type, {"1","g"}, {"-1","1","1","g"})
&& match_expectation(type, {"g","1"}, {"1","g","1","-1"})
&& match_expectation(type, {"g","1"}, {"g","1","1","-1"})
&& match_expectation(type, {"1","g"}, {"2","-2","g","1"})
&& match_expectation(type, {"1","g"}, {"2","-2","1","g"})
&& match_expectation(type, {"g","1"}, {"1","g","-2","2"})
&& match_expectation(type, {"g","1"}, {"g","1","-2","2"})
&& match_expectation(type, {"1","g"}, {"-1","1","h","g","1"})
&& match_expectation(type, {"1","g"}, {"-1","h","1","1","g"})
&& match_expectation(type, {"g","1"}, {"1","g","1","h","-1"})
&& match_expectation(type, {"g","1"}, {"h","g","1","1","-1"})
&& match_expectation(type, {"1","g"}, {"2","-2","1","g","h"})
&& match_expectation(type, {"g","1"}, {"g","h","1","-2","2"})
&& match_expectation(type, {"1","g"}, {"Wp","3","-4","g","1"})
&& match_expectation(type, {"3","g"}, {"-2","Wm","1","3","g"})
&& match_expectation(type, {"g","1"}, {"1","g","Wm","-3","4"})
&& match_expectation(type, {"g","-3"}, {"g","-3","-1","Wp","2"})
// 4j- gluon in qqx
&& match_expectation(type, {"g","1"}, {"1","g","-1","1"})
&& match_expectation(type, {"1","g"}, {"1","-1","g","1"})
&& match_expectation(type, {"g","1"}, {"1","g","Wm","-2","1"})
&& match_expectation(type, {"2","g"}, {"2","-2","g","Wp","1"})
&& match_expectation(type, {"g","g"}, {"Wp","3","g","-4","g"})
&& match_expectation(type, {"1","g"}, {"1","h","-1","g","1"})
// 6j - two qqx
&& match_expectation(type, {"g","g"}, {"1","-1","g","g","1","-1"})
&& match_expectation(type, {"g","g"}, {"1","-1","g","1","-1","g"})
&& match_expectation(type, {"g","g"}, {"g","1","-1","g","1","-1"})
&& match_expectation(type, {"g","g"}, {"g","1","-1","1","-1","g"})
&& match_expectation(type, {"g","g"}, {"g","1","1","-1","-1","g"})
&& match_expectation(type, {"g","g"}, {"h","1","-1","g","g","1","-1"})
&& match_expectation(type, {"g","g"}, {"1","Wp","-2","g","1","-1","g"})
&& match_expectation(type, {"g","g"}, {"g","1","Wp","-1","g","1","-2"})
&& match_expectation(type, {"g","g"}, {"g","1","-1","Wm","2","-1","g"})
&& match_expectation(type, {"g","g"}, {"g","1","2","-1","Wm","-1","g"})
// random stuff (can be non-physical)
&& match_expectation(type, {"g","g"}, {"1","-2","2","-1"}) // != 2 qqx
&& match_expectation(type, {"g","g"}, {"1","-2","2","g"}) // could be qqx
&& match_expectation(type, {"e+","e-"},{"1","-1"}) // bad initial state
&& match_expectation(type, {"1","e-"}, {"g","1","Wm"}) // bad initial state
&& match_expectation(type, {"h","g"}, {"g","g"}) // bad initial state
&& match_expectation(type, {"-1","g"}, {"-1","1","1"}) // bad qqx
&& match_expectation(type, {"-1","g"}, {"1","1","-1"}) // crossing in bad qqx
&& match_expectation(type, {"-1","g"}, {"-2","1","1","Wp"}) // bad qqx
&& match_expectation(type, {"1","2"}, {"1","-1","g","g","g","2"}) // bad qqx
&& match_expectation(type, {"1","2"}, {"1","-1","-2","g","g","2"}) // gluon in bad qqx
&& match_expectation(type, {"g","g"}, {"-1","2","g","g"}) // wrong back qqx
&& match_expectation(type, {"g","g"}, {"g","g","2","1"}) // wrong forward qqx
&& match_expectation(type, {"g","g"}, {"g","-2","1","g"}) // wrong central qqx
;
}
// Events failing the jet requirements, e.g. qqx inside one jet
//! TODO qqx currently not allow for pure jet -> need W for qqx
bool check_illegal_jets(){
auto type{ HEJ::event_type::non_resummable};
return true
// uno backward not in jet
&& match_expectation(type, {"1","g"}, {"g","1","g","g","g","g","g"}, -1)
// & also legal uno on other side
&& match_expectation(type, {"1","1"}, {"g","1","g","g","g","1","g"}, -1)
// qqx backward not in jet
&& match_expectation(type, {"g","2"}, {"-1","1","g","g","g","g","2"}, -1)
// uno forward not in jet
&& match_expectation(type, {"3","3"}, {"3","g","g","g","g","3","g"}, -2)
// qqx backward not in jet
&& match_expectation(type, {"g","g"}, {"g","g","g","g","g","-2","2"}, -2)
// uno backward in same jet
&& match_expectation(type, {"1","g"}, {"g","1","g","g","g","g","g"}, -3)
// & also legal uno on other side
&& match_expectation(type, {"1","1"}, {"g","1","g","g","g","1","g"}, -3)
// qqx backward in same jet
&& match_expectation(type, {"g","2"}, {"-4","4","g","g","g","g","2"}, -3)
// uno forward in same jet
&& match_expectation(type, {"3","2"}, {"3","g","g","g","g","2","g"}, -4)
// qqx backward in same jet
&& match_expectation(type, {"g","g"}, {"g","g","g","g","g","-2","2"}, -4)
// central qqx not in jet
&& match_expectation(type, {"1","2"}, {"1","g","-1","1","g","g","2"}, -5)
// central qqx in same jet
&& match_expectation(type, {"1","2"}, {"1","-1","1","g","g","g","2"}, -6)
// central qqx in same jet
&& match_expectation(type, {"1","2"}, {"1","g","g","g","2","-2","2"}, -6)
// central qqx in same jet
&& match_expectation(type, {"1","2"}, {"1","-1","1","g","g","g","2"}, -7)
// central qqx in same jet
&& match_expectation(type, {"1","2"}, {"1","g","g","3","-3","g","2"}, -7)
// central qqx in same jet
&& match_expectation(type, {"g","3"}, {"g","g","-2","2","g","g","3"}, -8)
// central qqx in same jet
&& match_expectation(type, {"g","-2"}, {"g","g","g","2","-2","g","-2"}, -8)
// FKL not in own jet
&& match_expectation(type, {"1","1"}, {"1","g","g","g","g","g","1"}, -1)
&& match_expectation(type, {"g","g"}, {"g","g","g","g","g","g","g"}, -2)
&& match_expectation(type, {"1","-3"}, {"1","g","g","g","g","-3","g"}, -1)
&& match_expectation(type, {"2","g"}, {"g","2","g","g","g","g","g"}, -2)
&& match_expectation(type, {"2","g"}, {"2","g","g","g","g","2","-2"}, -1)
&& match_expectation(type, {"g","-2"}, {"4","-4","g","g","g","g","-2"}, -2)
&& match_expectation(type, {"-1","g"}, {"-1","1","-1","g","g","g","g"}, -1)
&& match_expectation(type, {"4","-3"}, {"4","g","g","1","-1","g","-3"}, -2)
// FKL in same jet
&& match_expectation(type, {"1","1"}, {"1","g","g","g","g","g","1"}, -13)
// uno in same jet as FKL
&& match_expectation(type, {"-1","1"}, {"-1","g","g","g","g","1","g"}, -9)
&& match_expectation(type, {"-1","1"}, {"g","-1","g","g","g","g","1"}, -10)
&& match_expectation(type, {"-1","1"}, {"-1","g","g","g","g","1","g"}, -13)
&& match_expectation(type, {"-1","1"}, {"g","-1","g","g","g","g","1"}, -13)
// extremal qqx in same jet as FKL
&& match_expectation(type, {"-1","g"}, {"-1","g","g","g","g","1","-1"}, -9)
&& match_expectation(type, {"g","1"}, {"1","-1","g","g","g","g","1"}, -10)
&& match_expectation(type, {"-1","g"}, {"-1","g","g","g","g","-1","1"}, -13)
&& match_expectation(type, {"g","g"}, {"g","g","g","g","g","-1","1"}, -13)
// central qqx in same jet as FKL
&& match_expectation(type,{"2","2"}, {"2","-2","2","g","g","g","2"}, -3)
&& match_expectation(type,{"-1","g"}, {"-1","g","g","g","2","-2","g"}, -4)
&& match_expectation(type,{"g","4"}, {"g","g","-4","4","g","g","4"}, -6)
&& match_expectation(type,{"g","g"}, {"g","3","-3","g","g","g","g"}, -6)
&& match_expectation(type,{"g","1"}, {"g","g","g","g","-2","2","1"}, -9)
&& match_expectation(type,{"g","g"}, {"g","1","-1","g","g","g","g"}, -10)
&& match_expectation(type,{"g","1"}, {"g","g","-2","2","g","g","1"}, -11)
&& match_expectation(type,{"g","1"}, {"g","-2","2","g","g","g","1"}, -11)
&& match_expectation(type,{"3","2"}, {"3","g","-1","1","g","g","2"}, -12)
&& match_expectation(type,{"3","-2"}, {"3","-1","1","g","g","g","-2"}, -12)
&& match_expectation(type,{"3","-2"}, {"3","-1","1","g","g","g","-2"}, -13)
;
}
// Two boson states, that are currently not implemented
bool check_bad_FS(){
auto type{ HEJ::event_type::bad_final_state};
return
match_expectation(type, {"g","g"}, {"g","h","h","g"})
&& match_expectation(type, {"g","g"}, {"h","g","h","g"})
&& match_expectation(type, {"g","-1"}, {"g","h","Wp","-2"})
&& match_expectation(type, {"-3","-1"},{"-4","g","Wp","Wp","-2"})
&& match_expectation(type, {"-4","-1"},{"-3","Wp","g","Wm","-2"})
&& match_expectation(type, {"-4","-1"},{"g","-3","Wp","Wm","-2"})
&& match_expectation(type, {"-4","-1"},{"-4","g","11","-11","-2"})
&& match_expectation(type, {"-4","-1"},{"-4","g","-13","g","-2"})
;
}
// not 2 jets
bool check_not_2_jets(){
auto type{ HEJ::event_type::no_2_jets};
return
match_expectation(type, {"g","g"}, {})
&& match_expectation(type, {"1","-1"}, {})
&& match_expectation(type, {"g","-1"}, {"-1"})
&& match_expectation(type, {"g","g"}, {"g"})
;
}
}
int main() {
// tests for "no false negatives"
// i.e. all HEJ-configurations get classified correctly
if(!check_fkl()) return EXIT_FAILURE;
if(!check_uno()) return EXIT_FAILURE;
if(!check_extremal_qqx()) return EXIT_FAILURE;
if(!check_central_qqx()) return EXIT_FAILURE;
// test for "no false positive"
// i.e. non-resummable gives non-resummable
if(!check_non_resummable()) return EXIT_FAILURE;
if(!check_illegal_jets()) return EXIT_FAILURE;
if(!check_bad_FS()) return EXIT_FAILURE;
if(!check_not_2_jets()) return EXIT_FAILURE;
return EXIT_SUCCESS;
}
diff --git a/t/test_colours.cc b/t/test_colours.cc
index a7b96c4..2217d47 100644
--- a/t/test_colours.cc
+++ b/t/test_colours.cc
@@ -1,368 +1,402 @@
/**
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include <random>
#include <stdexcept>
#include <utility>
#include "HEJ/Constants.hh"
#include "HEJ/Event.hh"
#include "HEJ/RNG.hh"
#define ASSERT(x) if(!(x)) { \
throw std::logic_error("Assertion '" #x "' failed."); \
}
/// biased RNG to connect always to colour
class dum_rnd: public HEJ::DefaultRNG {
public:
dum_rnd() = default;
double flat() override {
return 0.;
};
};
void shuffle_particles(HEJ::Event::EventData & ev) {
static std::mt19937_64 ran{0};
// incoming
std::shuffle(begin(ev.incoming), end(ev.incoming), ran);
// outgoing (through index)
auto old_outgoing = std::move(ev.outgoing);
std::vector<size_t> idx(old_outgoing.size());
std::iota(idx.begin(), idx.end(), 0);
std::shuffle(begin(idx), end(idx), ran);
ev.outgoing.clear();
ev.outgoing.reserve(old_outgoing.size());
for(size_t i: idx) {
ev.outgoing.emplace_back(std::move(old_outgoing[i]));
}
// find decays again
if(!ev.decays.empty()){
auto old_decays = std::move(ev.decays);
ev.decays.clear();
for(size_t i=0; i<idx.size(); ++i) {
auto decay = old_decays.find(idx[i]);
if(decay != old_decays.end())
ev.decays.emplace(i, std::move(decay->second));
}
}
}
+std::vector<HEJ::Particle> decay_Wp( HEJ::Particle const & parent ){
+ const std::array<HEJ::ParticleID, 2> decays{ HEJ::ParticleID::e_bar,
+ HEJ::ParticleID::nu_e };
+ std::vector<HEJ::Particle> decay_products(decays.size());
+ for(size_t i = 0; i < decays.size(); ++i){
+ decay_products[i].type = decays[i];
+ }
+ // choose polar and azimuth angle in parent rest frame
+ const double E = parent.m()/2;
+ const double theta = 0.;
+ const double cos_phi = 1.;
+ const double sin_phi = sqrt(1. - cos_phi*cos_phi); // Know 0 < phi < pi
+ const double px = E*cos(theta)*sin_phi;
+ const double py = E*sin(theta)*sin_phi;
+ const double pz = E*cos_phi;
+ decay_products[0].p.reset(px, py, pz, E);
+ decay_products[1].p.reset(-px, -py, -pz, E);
+ for(auto & particle: decay_products) particle.p.boost(parent.p);
+ return decay_products;
+}
+
+HEJ::Event::EventData decay_boson( HEJ::Event::EventData ev ){
+ for( size_t i=0; i<ev.outgoing.size(); ++i ){
+ if( ev.outgoing[i].type == HEJ::ParticleID::Wp){
+ ev.decays[i] = decay_Wp(ev.outgoing[i]);
+ }
+ }
+ return ev;
+}
+
+
void dump_event(HEJ::Event const & ev){
for(auto const & in: ev.incoming()){
std::cerr << "in type=" << in.type
<< ", colour={" << (*in.colour).first
<< ", " << (*in.colour).second << "}\n";
}
for(auto const & out: ev.outgoing()){
std::cerr << "out type=" << out.type << ", colour={";
if(out.colour)
std::cerr << (*out.colour).first << ", " << (*out.colour).second;
else
std::cerr << "non, non";
std::cerr << "}\n";
}
}
/// true if colour is allowed for particle
bool correct_colour(HEJ::Particle const & part){
if(!HEJ::is_parton(part) && !part.colour) return true;
if(!part.colour) return false;
int const colour = part.colour->first;
int const anti_colour = part.colour->second;
if(part.type == HEJ::ParticleID::gluon)
return colour != anti_colour
&& colour >= HEJ::COLOUR_OFFSET
&& anti_colour >= HEJ::COLOUR_OFFSET;
if(HEJ::is_quark(part))
return anti_colour == 0 && colour >= HEJ::COLOUR_OFFSET;
return colour == 0 && anti_colour >= HEJ::COLOUR_OFFSET;
}
bool correct_colour(HEJ::Event const & ev){
if(!ev.is_leading_colour())
return false;
// some of these additional checks are also in ev.is_leading_colour()
for(auto const & part: ev.incoming()){
if(!correct_colour(part))
return false;
}
for(auto const & part: ev.outgoing()){
if(!correct_colour(part))
return false;
}
return true;
}
bool match_expected(
HEJ::Event const & ev,
std::vector<HEJ::Colour> const & expected
){
ASSERT(ev.outgoing().size()+2==expected.size());
for(size_t i=0; i<ev.incoming().size(); ++i){
ASSERT(ev.incoming()[i].colour);
if( *ev.incoming()[i].colour != expected[i])
return false;
}
for(size_t i=2; i<ev.outgoing().size()+2; ++i){
if( ev.outgoing()[i-2].colour ){
if( *ev.outgoing()[i-2].colour != expected[i] )
return false;
} else if( expected[i].first != 0 || expected[i].second != 0)
return false;
}
return true;
}
void check_event(
HEJ::Event::EventData unc_ev,
std::vector<HEJ::Colour> const & expected_colours
){
+ unc_ev = decay_boson(std::move(unc_ev));
shuffle_particles(unc_ev); // make sure incoming order doesn't matter
HEJ::Event ev{unc_ev.cluster(
fastjet::JetDefinition(fastjet::JetAlgorithm::antikt_algorithm, 0.4), 30.)
};
ASSERT(HEJ::event_type::is_resummable(ev.type()));
dum_rnd rng;
ASSERT(!ev.is_leading_colour());
ASSERT(ev.generate_colours(rng));
if(!correct_colour(ev)){
std::cerr << "Found illegal colours for event\n";
dump_event(ev);
throw std::invalid_argument("Illegal colour set");
}
if(!match_expected(ev, expected_colours)){
std::cerr << "Colours didn't match expectation. Found\n";
dump_event(ev);
std::cerr << "but expected\n";
for(auto const & col: expected_colours){
std::cerr << "colour={" << col.first << ", " << col.second << "}\n";
}
throw std::logic_error("Colours did not match expectation");
}
}
HEJ::Event::EventData reset_colour(
HEJ::Event::EventData ev, std::vector<HEJ::Colour> const & goal
){
for(size_t i=0; i<2; ++i){
ev.incoming[i].colour = goal[i];
}
for(size_t i=0; i<ev.outgoing.size(); ++i){
auto const & col_goal{ goal[i+2] };
if(col_goal.first == 0 && col_goal.second == 0)
ev.outgoing[i].colour = HEJ::optional<HEJ::Colour>{};
else
ev.outgoing[i].colour = col_goal;
}
return ev;
}
int main() {
HEJ::Event::EventData ev;
std::vector<HEJ::Colour> expected_colours(7);
- /// pure gluon
- ev.incoming[0] = { HEJ::ParticleID::gluon, { 0, 0,-427, 427}, {}};
- ev.incoming[1] = { HEJ::ParticleID::gluon, { 0, 0, 851, 851}, {}};
- ev.outgoing.push_back({ HEJ::ParticleID::gluon, { 196, 124, -82, 246}, {}});
- ev.outgoing.push_back({ HEJ::ParticleID::gluon, {-167,-184, 16, 249}, {}});
- ev.outgoing.push_back({ HEJ::ParticleID::higgs, { 197, 180, 168, 339}, {}});
- ev.outgoing.push_back({ HEJ::ParticleID::gluon, {-190, -57, 126, 235}, {}});
- ev.outgoing.push_back({ HEJ::ParticleID::gluon, { -36, -63, 196, 209}, {}});
+ /// pure gluon (they all have a mass of 4 GeV to allow decays)
+ ev.incoming[0] = { HEJ::ParticleID::gluon, { 0, 0, -205, 205}, {}};
+ ev.incoming[1] = { HEJ::ParticleID::gluon, { 0, 0, 279, 279}, {}};
+ ev.outgoing.push_back({ HEJ::ParticleID::gluon, {-15, -82, -82, 117}, {}});
+ ev.outgoing.push_back({ HEJ::ParticleID::gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({ HEJ::ParticleID::higgs, {-30, -65, 22, 75}, {}});
+ ev.outgoing.push_back({ HEJ::ParticleID::gluon, {-12, 92, 76, 120}, {}});
+ ev.outgoing.push_back({ HEJ::ParticleID::gluon, {-11, -38, 38, 55}, {}});
expected_colours[0] = {502, 501};
expected_colours[1] = {509, 502};
expected_colours[2] = {503, 501};
expected_colours[3] = {505, 503};
expected_colours[4] = { 0, 0};
expected_colours[5] = {507, 505};
expected_colours[6] = {509, 507};
// default colours is always forbidden!
// default: swap last two (anti-)colour -> crossing
ev=reset_colour(ev, expected_colours);
std::swap(ev.outgoing[4].colour, ev.outgoing[3].colour);
check_event(ev, expected_colours);
/// last g to Qx (=> gQx -> g ... Qx)
ev.incoming[1].type = HEJ::ParticleID::d_bar;
ev.outgoing[4].type = HEJ::ParticleID::d_bar;
// => only end changes
expected_colours[1].first = 0;
expected_colours[6].first = 0;
// default: swap last two anti-colours -> last gluon colour singlet
ev=reset_colour(ev, expected_colours);
std::swap(ev.outgoing[4].colour->second, ev.outgoing[3].colour->second);
check_event(ev, expected_colours);
{
// don't overwrite
auto new_expected = expected_colours;
auto new_ev = ev;
/// uno forward (=> gQx -> g ... Qx g)
std::swap(new_ev.outgoing[3].type, new_ev.outgoing[4].type);
// => uno quarks eats colour and gluon connects to anti-colour
new_expected[5] = {0, expected_colours[3].first};
new_expected[6] = {expected_colours[0].first, expected_colours[0].first+2};
new_expected[1].second += 2; // one more anti-colour in line
// default: swap last two anti-colours -> crossing
new_ev=reset_colour(new_ev, new_expected);
std::swap(new_ev.outgoing[4].colour->second, new_ev.outgoing[3].colour->second);
check_event(new_ev, new_expected);
}
/// swap Qx <-> Q (=> gQ -> g ... Q)
ev.incoming[1].type = HEJ::ParticleID::d;
ev.outgoing[4].type = HEJ::ParticleID::d;
// => swap: colour<->anti && initial<->final
std::swap(expected_colours[1], expected_colours[6]);
std::swap(expected_colours[1].first, expected_colours[1].second);
std::swap(expected_colours[6].first, expected_colours[6].second);
// default: swap incoming <-> outgoing
ev=reset_colour(ev, expected_colours);
std::swap(ev.incoming[0].colour, ev.outgoing[0].colour);
check_event(ev, expected_colours);
/// first g to qx (=> qxQ -> qx ... Q)
ev.incoming[0].type = HEJ::ParticleID::u_bar;
ev.outgoing[0].type = HEJ::ParticleID::u_bar;
expected_colours[0] = { 0, 501};
// => shift anti-colour index one up
expected_colours[1].first -= 2;
expected_colours[5] = expected_colours[3];
expected_colours[3] = expected_colours[2];
expected_colours[2] = { 0, 502};
// default: closed qx->qx g
ev=reset_colour(ev, expected_colours);
ev.outgoing[1].colour->first = ev.outgoing[0].colour->second;
ev.outgoing[1].colour->second = ev.incoming[0].colour->second;
ev.outgoing[4].colour->first = ev.outgoing[3].colour->second;
check_event(ev, expected_colours);
{
// don't overwrite
auto new_expected = expected_colours;
auto new_ev = ev;
/// uno backward (=> qxQ -> g qx ... Q)
std::swap(new_ev.outgoing[0].type, new_ev.outgoing[1].type);
// => uno gluon connects to quark colour
new_expected[3] = expected_colours[2];
new_expected[2] = {expected_colours[0].second+2, expected_colours[0].second};
// default: Colourful Higgs
new_ev=reset_colour(new_ev, new_expected);
new_ev.outgoing[2].colour = std::make_pair(1,1);
check_event(new_ev, new_expected);
/// swap qx <-> q (=> qQ -> g q ... Q)
new_ev.incoming[0].type = HEJ::ParticleID::u;
new_ev.outgoing[1].type = HEJ::ParticleID::u;
// => swap: colour<->anti && inital<->final
std::swap(new_expected[0], new_expected[3]);
std::swap(new_expected[0].first, new_expected[0].second);
std::swap(new_expected[3].first, new_expected[3].second);
// => & connect first gluon with remaining anti-colour
new_expected[2] = {new_expected[0].first, new_expected[0].first+2};
// shift colour line one down
new_expected[1].first-=2;
new_expected[5].first-=2;
new_expected[5].second-=2;
// shift anti-colour line one up
new_expected[6].first+=2;
// default: swap 2 quarks -> disconnected
new_ev=reset_colour(new_ev, new_expected);
std::swap(new_ev.outgoing[1].colour, new_ev.outgoing[4].colour);
check_event(new_ev, new_expected);
}
{
// don't overwrite
auto new_expected = expected_colours;
auto new_ev = ev;
/// uno forward (=> qxQ -> qx ... Q g)
std::swap(new_ev.outgoing[3].type, new_ev.outgoing[4].type);
// => uno gluon connects to remaining colour
new_expected[5] = expected_colours[6];
new_expected[6] = {expected_colours[3].first+2, expected_colours[3].first};
// default: no colour on last gluon
new_ev=reset_colour(new_ev, new_expected);
new_ev.incoming[1].colour->first = new_ev.outgoing[4].colour->second;
new_ev.outgoing[4].colour = {};
check_event(new_ev, new_expected);
}
{
// don't overwrite
auto new_expected = expected_colours;
auto new_ev = ev;
- /// qqx backward (=> gQ -> qx q ... Q)
+ /// qqx backward (=> gQ -> qx q ... Q) with Wp
// => swap: incoming q <-> outgoing gluon
std::swap(new_ev.incoming[0].type, new_ev.outgoing[1].type);
new_ev.outgoing[1].type=static_cast<HEJ::ParticleID>(
- -1*new_ev.outgoing[1].type);
+ -(new_ev.outgoing[1].type+1) );
+ new_ev.outgoing[2].type = HEJ::ParticleID::Wp;
// incoming q -> outgoing q (colour<->anti)
std::swap(new_expected[0], new_expected[3]);
std::swap(new_expected[3].first, new_expected[3].second);
new_expected[3].first+=2;
new_expected[0].first-=1; // skip one index
// couple first in to first out
new_expected[2].second=new_expected[0].second;
// default: swap qqx <-> first g
new_ev=reset_colour(new_ev, new_expected);
std::swap(new_ev.outgoing[0].colour->second, new_ev.outgoing[3].colour->second);
std::swap(new_ev.outgoing[1].colour->first, new_ev.outgoing[3].colour->first);
check_event(new_ev, new_expected);
}
{
// don't overwrite
auto new_expected = expected_colours;
auto new_ev = ev;
- /// qqx forward (=> qx g -> qx ... Qx Q)
+ /// qqx forward (=> qx g -> qx ... Qx Q) with Wp
// => swap: incoming Q <-> outgoing gluon
std::swap(new_ev.incoming[1].type, new_ev.outgoing[3].type);
new_ev.outgoing[3].type=static_cast<HEJ::ParticleID>(
- -1*new_ev.outgoing[3].type);
+ -(new_ev.outgoing[3].type+1));
+ new_ev.outgoing[2].type = HEJ::ParticleID::Wp;
// incoming q -> outgoing q (colour<->anti)
std::swap(new_expected[1], new_expected[5]);
std::swap(new_expected[5].first, new_expected[5].second);
new_expected[5].second-=2;
new_expected[1].second-=1; // skip one index
// couple last in to last out
new_expected[6].first=new_expected[1].first;
// default: uncoloured quark
new_ev=reset_colour(new_ev, new_expected);
new_ev.outgoing[0].colour = {};
check_event(new_ev, new_expected);
// move Higgs to position 1 (=> qx g -> qx h g Qx Q)
std::swap(new_ev.outgoing[1].type, new_ev.outgoing[2].type);
std::swap(new_expected[3], new_expected[4]); // trivial
// default: incoming qx wrong colour
new_ev=reset_colour(new_ev, new_expected);
new_ev.incoming[0].colour->first = 1;
check_event(new_ev, new_expected);
// central qqx (=> qx g -> qx h Q Qx g)
// => swap: Q <-> g
std::swap(new_ev.outgoing[2].type, new_ev.outgoing[4].type);
std::swap(new_expected[4], new_expected[6]);
// gluon was connected on left side, i.e. doesn't matter for QQx
// => couple Q to out qx
new_expected[4].first = new_expected[2].second;
// Qx next in line
new_expected[5].second = new_expected[4].first+2;
// incoming g shifted by one position in line
new_expected[1].first-=2;
new_expected[1].second+=2;
// default: wrong colour in last incoming
new_ev=reset_colour(new_ev, new_expected);
std::swap(new_ev.incoming[1].colour->first,
new_ev.incoming[1].colour->second);
check_event(new_ev, new_expected);
}
return EXIT_SUCCESS;
}

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