diff --git a/src/Event.cc b/src/Event.cc
index d09662b..0a9544b 100644
--- a/src/Event.cc
+++ b/src/Event.cc
@@ -1,856 +1,942 @@
/**
* \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;
+ //! true if leptonic W decay
+ bool valid_W_decay( int const w_type, // sign of W
+ std::vector<Particle> const & decays
+ ){
+ if(decays.size() != 2) // no 1->2 decay
+ return false;
+ const int pidsum = decays[0].type + decays[1].type;
+ if( std::abs(pidsum) != 1 || pidsum != w_type ) // correct charge
+ return false;
+ // leptonic decay (only check first, second follows from pidsum)
+ if( w_type == 1 ) // W+
+ return is_antilepton(decays[0]) || is_neutrino(decays[0]);
+ // W-
+ return is_lepton(decays[0]) || is_antineutrino(decays[0]);
+ }
+
/// @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 final_state_ok(Event const & ev){
+ std::vector<Particle> const & outgoing = ev.outgoing();
+ if(ev.decays().size() > 1) // at most one decay
+ return false;
bool has_AWZH_boson = false;
- for(auto const & out: outgoing){
+ for( size_t i=0; i<outgoing.size(); ++i ){
+ auto const & out{ outgoing[i] };
if(is_AWZH_boson(out.type)){
+ // at most one boson
if(has_AWZH_boson) return false;
has_AWZH_boson = true;
+
+ // valid decay for W
+ if(std::abs(out.type) == ParticleID::Wp){
+ // exactly 1 decay of W
+ if( ev.decays().size() != 1 || ev.decays().cbegin()->first != i )
+ return false;
+ if( !valid_W_decay(out.type>0?+1:-1, ev.decays().cbegin()->second) )
+ return false;
+ }
}
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, class IndexIterator>
+ template<class OutIterator>
size_t possible_impact_factors(
ParticleID incoming_id, // incoming
OutIterator & begin_out, OutIterator const & end_out, // outgoing
- IndexIterator & begin_idx, // jet indices
int & W_change, std::vector<Particle> const & boson,
bool const backward // backward?
){
- using event_type::EventType;
+ using namespace event_type;
assert(boson.size() < 2);
// keep track of all states that we don't test
- size_t not_tested = EventType::qqxmid;
+ size_t not_tested = qqxmid;
if(backward)
- not_tested |= EventType::unof | EventType::qqxexf;
+ not_tested |= unof | qqxexf;
else
- not_tested |= EventType::unob | EventType::qqxexb;
+ not_tested |= unob | qqxexb;
// Is this LL current?
if( is_valid_impact_factor(incoming_id, begin_out->type, false, W_change) ){
++begin_out;
- ++begin_idx;
- return not_tested | EventType::FKL;
+ return not_tested | FKL;
}
// or NLL current?
// -> needs two partons in two different jets
if( std::distance(begin_out, end_out)>=2
- && *begin_idx>=0 && *(begin_idx+1)>=0 && *begin_idx!=*(begin_idx+1)
){
// 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 EventType::non_resummable;
+ return non_resummable;
}
begin_out+=2;
- begin_idx+=2;
- return not_tested | (backward?EventType::unob:EventType::unof);
+ 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 EventType::non_resummable;
+ return non_resummable;
}
begin_out+=2;
- begin_idx+=2;
- return not_tested | (backward?EventType::qqxexb:EventType::qqxexf);
+ return not_tested | (backward?qqxexb:qqxexf);
}
}
}
- return EventType::non_resummable;
+ 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, class IndexIterator>
+ template<class OutIterator>
size_t possible_central(
- OutIterator & begin_out, OutIterator const & end_out,
- IndexIterator & begin_idx,
- int & W_change, std::vector<Particle> const & boson
+ OutIterator & begin_out, OutIterator const & end_out,
+ int & W_change, std::vector<Particle> const & boson,
+ OutIterator & qqx_pos
){
- using event_type::EventType;
+ 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 EventType::non_resummable;
+ if(std::distance(begin_out, end_out) < 0) return non_resummable;
// keep track of all states that we don't test
- size_t possible = EventType::unob | EventType::unof
- | EventType::qqxexb | EventType::qqxexf;
+ 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;
- ++begin_idx;
}
// end of chain -> FKL
if( begin_out==end_out ){
- return possible | EventType::FKL;
+ 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 )
- && *begin_idx>=0 && *(begin_idx+1)>=0 && *begin_idx!=*(begin_idx+1)
){
// 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 EventType::non_resummable;
+ return non_resummable;
}
+ qqx_pos=begin_out;
begin_out+=2;
- begin_idx+=2;
// remaining chain should be pure gluon/FKL
for(; begin_out<end_out; ++begin_out){
- if(begin_out->type != pid::gluon) return EventType::non_resummable;
- ++begin_idx;
+ if(begin_out->type != pid::gluon) return non_resummable;
}
- return possible | EventType::qqxmid;
+ return possible | qqxmid;
}
- return EventType::non_resummable;
+ 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 event_type::EventType;
+ using namespace event_type;
if(! has_2_jets(ev))
- return EventType::no_2_jets;
+ 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 EventType::bad_final_state;
+ if(! final_state_ok(ev))
+ return bad_final_state;
// initialise variables
auto const & in = ev.incoming();
auto const & out = filter_partons(ev.outgoing());
- auto indices{ev.particle_jet_indices({ev.jets()})};
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()};
- auto begin_idx{indices.cbegin()};
- auto end_idx{indices.crbegin()};
- size_t final_type = ~(EventType::no_2_jets | EventType::bad_final_state);
+ 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(), begin_idx,
+ begin_out, end_out.base(),
W_change, boson, true );
- assert(std::distance(begin_out, end_out.base())
- == std::distance(begin_idx, end_idx.base()));
+ 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), end_idx,
+ end_out, std::make_reverse_iterator(begin_out),
W_change, boson, false );
- assert(std::distance(begin_out, end_out.base())
- == std::distance(begin_idx, end_idx.base()));
+ 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(), begin_idx, W_change, boson );
- assert(std::distance(begin_out, end_out.base())
- == std::distance(begin_idx, end_idx.base()));
+ 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 EventType::non_resummable;
+ if( remaining_Wp != 0 || remaining_Wm != 0 ) return non_resummable;
// result has to be unique
- if( (final_type & (final_type-1)) != 0) return EventType::non_resummable;
+ 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/src/MatrixElement.cc b/src/MatrixElement.cc
index 401d274..2a2bebf 100644
--- a/src/MatrixElement.cc
+++ b/src/MatrixElement.cc
@@ -1,1597 +1,1616 @@
/**
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include "HEJ/MatrixElement.hh"
#include <algorithm>
#include <assert.h>
#include <limits>
#include <math.h>
#include <stddef.h>
#include <unordered_map>
#include <utility>
#include "CLHEP/Vector/LorentzVector.h"
#include "HEJ/Constants.hh"
#include "HEJ/Wjets.hh"
#include "HEJ/Hjets.hh"
#include "HEJ/jets.hh"
#include "HEJ/PDG_codes.hh"
#include "HEJ/event_types.hh"
#include "HEJ/Event.hh"
#include "HEJ/exceptions.hh"
#include "HEJ/Particle.hh"
#include "HEJ/utility.hh"
namespace HEJ{
double MatrixElement::omega0(
double alpha_s, double mur,
fastjet::PseudoJet const & q_j
) const {
const double lambda = param_.regulator_lambda;
const double result = - alpha_s*N_C/M_PI*log(q_j.perp2()/(lambda*lambda));
if(! param_.log_correction) return result;
// use alpha_s(sqrt(q_j*lambda)), evolved to mur
return (
1. + alpha_s/(4.*M_PI)*beta0*log(mur*mur/(q_j.perp()*lambda))
)*result;
}
Weights MatrixElement::operator()(Event const & event) const {
return tree(event)*virtual_corrections(event);
}
Weights MatrixElement::tree(Event const & event) const {
return tree_param(event)*tree_kin(event);
}
Weights MatrixElement::tree_param(Event const & event) const {
if(! is_resummable(event.type())) {
return Weights{0., std::vector<double>(event.variations().size(), 0.)};
}
Weights result;
// only compute once for each renormalisation scale
std::unordered_map<double, double> known;
result.central = tree_param(event, event.central().mur);
known.emplace(event.central().mur, result.central);
for(auto const & var: event.variations()) {
const auto ME_it = known.find(var.mur);
if(ME_it == end(known)) {
const double wt = tree_param(event, var.mur);
result.variations.emplace_back(wt);
known.emplace(var.mur, wt);
}
else {
result.variations.emplace_back(ME_it->second);
}
}
return result;
}
Weights MatrixElement::virtual_corrections(Event const & event) const {
if(! is_resummable(event.type())) {
return Weights{0., std::vector<double>(event.variations().size(), 0.)};
}
Weights result;
// only compute once for each renormalisation scale
std::unordered_map<double, double> known;
result.central = virtual_corrections(event, event.central().mur);
known.emplace(event.central().mur, result.central);
for(auto const & var: event.variations()) {
const auto ME_it = known.find(var.mur);
if(ME_it == end(known)) {
const double wt = virtual_corrections(event, var.mur);
result.variations.emplace_back(wt);
known.emplace(var.mur, wt);
}
else {
result.variations.emplace_back(ME_it->second);
}
}
return result;
}
double MatrixElement::virtual_corrections_W(
Event const & event,
double mur,
Particle const & WBoson
) const{
auto const & in = event.incoming();
const auto partons = filter_partons(event.outgoing());
fastjet::PseudoJet const & pa = in.front().p;
#ifndef NDEBUG
fastjet::PseudoJet const & pb = in.back().p;
double const norm = (in.front().p + in.back().p).E();
#endif
assert(std::is_sorted(partons.begin(), partons.end(), rapidity_less{}));
assert(partons.size() >= 2);
assert(pa.pz() < pb.pz());
fastjet::PseudoJet q = pa - partons[0].p;
size_t first_idx = 0;
size_t last_idx = partons.size() - 1;
#ifndef NDEBUG
bool wc = true;
#endif
bool wqq = false;
// With extremal qqx or unordered gluon outside the extremal
// partons then it is not part of the FKL ladder and does not
// contribute to the virtual corrections. W emitted from the
// most backward leg must be taken into account in t-channel
if (event.type() == event_type::unob) {
q -= partons[1].p;
++first_idx;
if (in[0].type != partons[1].type ){
q -= WBoson.p;
#ifndef NDEBUG
wc=false;
#endif
}
}
else if (event.type() == event_type::qqxexb) {
q -= partons[1].p;
++first_idx;
if (abs(partons[0].type) != abs(partons[1].type)){
q -= WBoson.p;
#ifndef NDEBUG
wc=false;
#endif
}
}
else {
if(event.type() == event_type::unof
|| event.type() == event_type::qqxexf){
--last_idx;
}
if (in[0].type != partons[0].type ){
q -= WBoson.p;
#ifndef NDEBUG
wc=false;
#endif
}
}
size_t first_idx_qqx = last_idx;
size_t last_idx_qqx = last_idx;
//if qqxMid event, virtual correction do not occur between
//qqx pair.
if(event.type() == event_type::qqxmid){
const auto backquark = std::find_if(
begin(partons) + 1, end(partons) - 1 ,
[](Particle const & s){ return (s.type != pid::gluon); }
);
if(backquark == end(partons) || (backquark+1)->type==pid::gluon) return 0;
if(abs(backquark->type) != abs((backquark+1)->type)) {
wqq=true;
#ifndef NDEBUG
wc=false;
#endif
}
last_idx = std::distance(begin(partons), backquark);
first_idx_qqx = last_idx+1;
}
double exponent = 0;
const double alpha_s = alpha_s_(mur);
for(size_t j = first_idx; j < last_idx; ++j){
exponent += omega0(alpha_s, mur, q)*(
partons[j+1].rapidity() - partons[j].rapidity()
);
q -=partons[j+1].p;
} // End Loop one
if (last_idx != first_idx_qqx) q -= partons[last_idx+1].p;
if (wqq) q -= WBoson.p;
for(size_t j = first_idx_qqx; j < last_idx_qqx; ++j){
exponent += omega0(alpha_s, mur, q)*(
partons[j+1].rapidity() - partons[j].rapidity()
);
q -= partons[j+1].p;
}
#ifndef NDEBUG
if (wc) q -= WBoson.p;
assert(
nearby(q, -1*pb, norm)
|| is_AWZH_boson(partons.back().type)
|| event.type() == event_type::unof
|| event.type() == event_type::qqxexf
);
#endif
return exp(exponent);
}
double MatrixElement::virtual_corrections(
Event const & event,
double mur
) const{
auto const & in = event.incoming();
auto const & out = event.outgoing();
fastjet::PseudoJet const & pa = in.front().p;
#ifndef NDEBUG
fastjet::PseudoJet const & pb = in.back().p;
double const norm = (in.front().p + in.back().p).E();
#endif
const auto AWZH_boson = std::find_if(
begin(out), end(out),
[](Particle const & p){ return is_AWZH_boson(p); }
);
if(AWZH_boson != end(out) && abs(AWZH_boson->type) == pid::Wp){
return virtual_corrections_W(event, mur, *AWZH_boson);
}
assert(std::is_sorted(out.begin(), out.end(), rapidity_less{}));
assert(out.size() >= 2);
assert(pa.pz() < pb.pz());
fastjet::PseudoJet q = pa - out[0].p;
size_t first_idx = 0;
size_t last_idx = out.size() - 1;
// if there is a Higgs boson, extremal qqx or unordered gluon
// outside the extremal partons then it is not part of the FKL
// ladder and does not contribute to the virtual corrections
if((out.front().type == pid::Higgs)
|| event.type() == event_type::unob
|| event.type() == event_type::qqxexb){
q -= out[1].p;
++first_idx;
}
if((out.back().type == pid::Higgs)
|| event.type() == event_type::unof
|| event.type() == event_type::qqxexf){
--last_idx;
}
size_t first_idx_qqx = last_idx;
size_t last_idx_qqx = last_idx;
//if qqxMid event, virtual correction do not occur between
//qqx pair.
if(event.type() == event_type::qqxmid){
const auto backquark = std::find_if(
begin(out) + 1, end(out) - 1 ,
[](Particle const & s){ return (s.type != pid::gluon && is_parton(s.type)); }
);
if(backquark == end(out) || (backquark+1)->type==pid::gluon) return 0;
last_idx = std::distance(begin(out), backquark);
first_idx_qqx = last_idx+1;
}
double exponent = 0;
const double alpha_s = alpha_s_(mur);
for(size_t j = first_idx; j < last_idx; ++j){
exponent += omega0(alpha_s, mur, q)*(
out[j+1].rapidity() - out[j].rapidity()
);
q -= out[j+1].p;
}
if (last_idx != first_idx_qqx) q -= out[last_idx+1].p;
for(size_t j = first_idx_qqx; j < last_idx_qqx; ++j){
exponent += omega0(alpha_s, mur, q)*(
out[j+1].rapidity() - out[j].rapidity()
);
q -= out[j+1].p;
}
assert(
nearby(q, -1*pb, norm)
|| out.back().type == pid::Higgs
|| event.type() == event_type::unof
|| event.type() == event_type::qqxexf
);
return exp(exponent);
}
namespace {
//! Lipatov vertex for partons emitted into extremal jets
double C2Lipatov(
CLHEP::HepLorentzVector const & qav,
CLHEP::HepLorentzVector const & qbv,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & p2
){
CLHEP::HepLorentzVector temptrans=-(qav+qbv);
CLHEP::HepLorentzVector p5=qav-qbv;
CLHEP::HepLorentzVector CL=temptrans
+ p1*(qav.m2()/p5.dot(p1) + 2.*p5.dot(p2)/p1.dot(p2))
- p2*(qbv.m2()/p5.dot(p2) + 2.*p5.dot(p1)/p1.dot(p2));
return -CL.dot(CL);
}
//! Lipatov vertex with soft subtraction for partons emitted into extremal jets
double C2Lipatovots(
CLHEP::HepLorentzVector const & qav,
CLHEP::HepLorentzVector const & qbv,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & p2,
double lambda
) {
double kperp=(qav-qbv).perp();
if (kperp>lambda)
return C2Lipatov(qav, qbv, p1, p2)/(qav.m2()*qbv.m2());
double Cls=(C2Lipatov(qav, qbv, p1, p2)/(qav.m2()*qbv.m2()));
return Cls-4./(kperp*kperp);
}
//! Lipatov vertex
double C2Lipatov( // B
CLHEP::HepLorentzVector const & qav,
CLHEP::HepLorentzVector const & qbv,
CLHEP::HepLorentzVector const & pim,
CLHEP::HepLorentzVector const & pip,
CLHEP::HepLorentzVector const & pom,
CLHEP::HepLorentzVector const & pop
){
CLHEP::HepLorentzVector temptrans=-(qav+qbv);
CLHEP::HepLorentzVector p5=qav-qbv;
CLHEP::HepLorentzVector CL=temptrans
+ qav.m2()*(1./p5.dot(pip)*pip + 1./p5.dot(pop)*pop)/2.
- qbv.m2()*(1./p5.dot(pim)*pim + 1./p5.dot(pom)*pom)/2.
+ ( pip*(p5.dot(pim)/pip.dot(pim) + p5.dot(pom)/pip.dot(pom))
+ pop*(p5.dot(pim)/pop.dot(pim) + p5.dot(pom)/pop.dot(pom))
- pim*(p5.dot(pip)/pip.dot(pim) + p5.dot(pop)/pop.dot(pim))
- pom*(p5.dot(pip)/pip.dot(pom) + p5.dot(pop)/pop.dot(pom)) )/2.;
return -CL.dot(CL);
}
//! Lipatov vertex with soft subtraction
double C2Lipatovots(
CLHEP::HepLorentzVector const & qav,
CLHEP::HepLorentzVector const & qbv,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & p2,
double lambda
) {
double kperp=(qav-qbv).perp();
if (kperp>lambda)
return C2Lipatov(qav, qbv, pa, pb, p1, p2)/(qav.m2()*qbv.m2());
double Cls=(C2Lipatov(qav, qbv, pa, pb, p1, p2)/(qav.m2()*qbv.m2()));
double temp=Cls-4./(kperp*kperp);
return temp;
}
/** Matrix element squared for tree-level current-current scattering
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param pg Unordered gluon momentum
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param p1 Particle 1 Momentum
* @param pa Particle a Momentum
* @returns ME Squared for Tree-Level Current-Current Scattering
*
* @note The unof contribution can be calculated by reversing the argument ordering.
*/
double ME_uno_current(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pg,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & pa
){
assert(aptype!=21); // aptype cannot be gluon
if (bptype==21) {
if (aptype > 0)
return ME_unob_qg(pg,p1,pa,pn,pb);
else
return ME_unob_qbarg(pg,p1,pa,pn,pb);
}
else if (bptype<0) { // ----- || -----
if (aptype > 0)
return ME_unob_qQbar(pg,p1,pa,pn,pb);
else
return ME_unob_qbarQbar(pg,p1,pa,pn,pb);
}
else { //bptype == quark
if (aptype > 0)
return ME_unob_qQ(pg,p1,pa,pn,pb);
else
return ME_unob_qbarQ(pg,p1,pa,pn,pb);
}
}
/** Matrix element squared for tree-level current-current scattering
* @param bptype Particle b PDG ID
* @param pgin Incoming gluon momentum
* @param pq Quark from splitting Momentum
* @param pqbar Anti-quark from splitting Momentum
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param swap_q_qx Boolean. Ordering of qqbar pair. False: pqbar extremal.
* @returns ME Squared for Tree-Level Current-Current Scattering
*
* @note The qqxf contribution can be calculated by reversing the argument ordering.
*/
double ME_qqx_current(
int bptype,
CLHEP::HepLorentzVector const & pgin,
CLHEP::HepLorentzVector const & pq,
CLHEP::HepLorentzVector const & pqbar,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
bool const swap_q_qx
){
// CAM factors for the qqx amps, and qqbar ordering (default, qbar extremal)
const double CFbackward = K_g( (swap_q_qx)?pq:pqbar ,pgin)/HEJ::C_F;
if (bptype==21) {
if (swap_q_qx) // pq extremal
return ME_Exqqx_qqbarg(pgin,pq,pqbar,pn,pb)*CFbackward;
else // pqbar extremal
return ME_Exqqx_qbarqg(pgin,pq,pqbar,pn,pb)*CFbackward;
}
else { // b leg quark line
if (swap_q_qx) //extremal pq
return ME_Exqqx_qqbarQ(pgin,pq,pqbar,pn,pb)*CFbackward;
else
return ME_Exqqx_qbarqQ(pgin,pq,pqbar,pn,pb)*CFbackward;
}
throw std::logic_error("Unreachable in ME_Exqqx_current()");
}
/** Matrix element squared for tree-level current-current scattering
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param p1 Particle 1 Momentum
* @param pa Particle a Momentum
* @returns ME Squared for Tree-Level Current-Current Scattering
*/
double ME_current(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & pa
){
if (aptype==21&&bptype==21) {
return ME_gg(pn,pb,p1,pa);
} else if (aptype==21&&bptype!=21) {
if (bptype > 0)
return ME_qg(pn,pb,p1,pa);
else
return ME_qbarg(pn,pb,p1,pa);
}
else if (bptype==21&&aptype!=21) { // ----- || -----
if (aptype > 0)
return ME_qg(p1,pa,pn,pb);
else
return ME_qbarg(p1,pa,pn,pb);
}
else { // they are both quark
if (bptype>0) {
if (aptype>0)
return ME_qQ(pn,pb,p1,pa);
else
return ME_qQbar(pn,pb,p1,pa);
}
else {
if (aptype>0)
return ME_qQbar(p1,pa,pn,pb);
else
return ME_qbarQbar(pn,pb,p1,pa);
}
}
throw std::logic_error("unknown particle types");
}
/** Matrix element squared for tree-level current-current scattering With W+Jets
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param p1 Particle 1 Momentum
* @param pa Particle a Momentum
* @param wc Boolean. True->W Emitted from b. Else; emitted from leg a
* @returns ME Squared for Tree-Level Current-Current Scattering
*/
double ME_W_current(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & plbar,
CLHEP::HepLorentzVector const & pl,
bool const wc, ParticleProperties const & Wprop
){
// We know it cannot be gg incoming.
assert(!(aptype==21 && bptype==21));
if (aptype==21&&bptype!=21) {
if (bptype > 0)
return ME_W_qg(pn,plbar,pl,pb,p1,pa,Wprop);
else
return ME_W_qbarg(pn,plbar,pl,pb,p1,pa,Wprop);
}
else if (bptype==21&&aptype!=21) { // ----- || -----
if (aptype > 0)
return ME_W_qg(p1,plbar,pl,pa,pn,pb,Wprop);
else
return ME_W_qbarg(p1,plbar,pl,pa,pn,pb,Wprop);
}
else { // they are both quark
if (wc==true){ // emission off b, (first argument pbout)
if (bptype>0) {
if (aptype>0)
return ME_W_qQ(pn,plbar,pl,pb,p1,pa,Wprop);
else
return ME_W_qQbar(pn,plbar,pl,pb,p1,pa,Wprop);
}
else {
if (aptype>0)
return ME_W_qbarQ(pn,plbar,pl,pb,p1,pa,Wprop);
else
return ME_W_qbarQbar(pn,plbar,pl,pb,p1,pa,Wprop);
}
}
else{ // emission off a, (first argument paout)
if (aptype > 0) {
if (bptype > 0)
return ME_W_qQ(p1,plbar,pl,pa,pn,pb,Wprop);
else
return ME_W_qQbar(p1,plbar,pl,pa,pn,pb,Wprop);
}
else { // a is anti-quark
if (bptype > 0)
return ME_W_qbarQ(p1,plbar,pl,pa,pn,pb,Wprop);
else
return ME_W_qbarQbar(p1,plbar,pl,pa,pn,pb,Wprop);
}
}
}
throw std::logic_error("unknown particle types");
}
/** Matrix element squared for backwards uno tree-level current-current
* scattering With W+Jets
*
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param p1 Particle 1 Momentum
* @param pa Particle a Momentum
* @param pg Unordered gluon momentum
* @param wc Boolean. True->W Emitted from b. Else; emitted from leg a
* @returns ME Squared for unob Tree-Level Current-Current Scattering
*
* @note The unof contribution can be calculated by reversing the argument ordering.
*/
double ME_W_uno_current(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & pg,
CLHEP::HepLorentzVector const & plbar,
CLHEP::HepLorentzVector const & pl,
bool const wc, ParticleProperties const & Wprop
){
// we know they are not both gluons
if (bptype == 21 && aptype != 21) { // b gluon => W emission off a
if (aptype > 0)
return ME_Wuno_qg(p1,pa,pn,pb,pg,plbar,pl,Wprop);
else
return ME_Wuno_qbarg(p1,pa,pn,pb,pg,plbar,pl,Wprop);
}
else { // they are both quark
if (wc) {// emission off b, i.e. b is first current
if (bptype>0){
if (aptype>0)
return ME_W_unob_qQ(p1,pa,pn,pb,pg,plbar,pl,Wprop);
else
return ME_W_unob_qQbar(p1,pa,pn,pb,pg,plbar,pl,Wprop);
}
else{
if (aptype>0)
return ME_W_unob_qbarQ(p1,pa,pn,pb,pg,plbar,pl,Wprop);
else
return ME_W_unob_qbarQbar(p1,pa,pn,pb,pg,plbar,pl,Wprop);
}
}
else {// wc == false, emission off a, i.e. a is first current
if (aptype > 0) {
if (bptype > 0) //qq
return ME_Wuno_qQ(p1,pa,pn,pb,pg,plbar,pl,Wprop);
else //qqbar
return ME_Wuno_qQbar(p1,pa,pn,pb,pg,plbar,pl,Wprop);
}
else { // a is anti-quark
if (bptype > 0) //qbarq
return ME_Wuno_qbarQ(p1,pa,pn,pb,pg,plbar,pl,Wprop);
else //qbarqbar
return ME_Wuno_qbarQbar(p1,pa,pn,pb,pg,plbar,pl,Wprop);
}
}
}
throw std::logic_error("unknown particle types");
}
/** \brief Matrix element squared for backward qqx tree-level current-current
* scattering With W+Jets
*
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param pa Initial state a Momentum
* @param pb Initial state b Momentum
* @param pq Final state q Momentum
* @param pqbar Final state qbar Momentum
* @param pn Final state n Momentum
* @param plbar Final state anti-lepton momentum
* @param pl Final state lepton momentum
* @param swap_q_qx Boolean. Ordering of qqbar pair. False: pqbar extremal.
* @param wc Boolean. True->W Emitted from b. Else; emitted from leg a
* @returns ME Squared for qqxb Tree-Level Current-Current Scattering
*
* @note calculate forwards qqx contribution by reversing argument ordering.
*/
double ME_W_qqx_current(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & pq,
CLHEP::HepLorentzVector const & pqbar,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & plbar,
CLHEP::HepLorentzVector const & pl,
bool const swap_q_qx, bool const wc,
ParticleProperties const & Wprop
){
// CAM factors for the qqx amps, and qqbar ordering (default, qbar extremal)
const double CFbackward = K_g( (swap_q_qx)?pq:pqbar ,pa)/HEJ::C_F;
// With qqbar we could have 2 incoming gluons and W Emission
if (aptype==21&&bptype==21) {//a gluon, b gluon gg->qqbarWg
// This will be a wqqx emission as there is no other possible W Emission Site.
if (swap_q_qx)
return ME_WExqqx_qqbarg(pa, pqbar, plbar, pl, pq, pn, pb, Wprop)*CFbackward;
else
return ME_WExqqx_qbarqg(pa, pq, plbar, pl, pqbar, pn, pb, Wprop)*CFbackward;
}
else if (aptype==21&&bptype!=21 ) {//a gluon => W emission off b leg or qqx
if (!wc){ // W Emitted from backwards qqx
if (swap_q_qx)
return ME_WExqqx_qqbarQ(pa, pqbar, plbar, pl, pq, pn, pb, Wprop)*CFbackward;
else
return ME_WExqqx_qbarqQ(pa, pq, plbar, pl, pqbar, pn, pb, Wprop)*CFbackward;
}
else { // W Must be emitted from forwards leg.
if (swap_q_qx)
return ME_W_Exqqx_QQq(pb, pa, pn, pqbar, pq, plbar, pl, bptype<0, Wprop)*CFbackward;
else
return ME_W_Exqqx_QQq(pb, pa, pn, pq, pqbar, plbar, pl, bptype<0, Wprop)*CFbackward;
}
}
throw std::logic_error("Incompatible incoming particle types with qqxb");
}
/* \brief Matrix element squared for central qqx tree-level current-current
* scattering With W+Jets
*
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param nabove Number of gluons emitted before central qqxpair
* @param nbelow Number of gluons emitted after central qqxpair
* @param pa Initial state a Momentum
* @param pb Initial state b Momentum\
* @param pq Final state qbar Momentum
* @param pqbar Final state q Momentum
* @param partons Vector of all outgoing partons
* @param plbar Final state anti-lepton momentum
* @param pl Final state lepton momentum
* @param wqq Boolean. True siginfies W boson is emitted from Central qqx
* @param wc Boolean. wc=true signifies w boson emitted from leg b; if wqq=false.
* @returns ME Squared for qqxmid Tree-Level Current-Current Scattering
*/
double ME_W_qqxmid_current(
int aptype, int bptype,
int nabove, int nbelow,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & pq,
CLHEP::HepLorentzVector const & pqbar,
std::vector<HLV> const & partons,
CLHEP::HepLorentzVector const & plbar,
CLHEP::HepLorentzVector const & pl,
bool const wqq, bool const wc,
ParticleProperties const & Wprop
){
// CAM factors for the qqx amps, and qqbar ordering (default, pq backwards)
const bool swap_q_qx=pqbar.rapidity() < pq.rapidity();
double wt=1.;
if (aptype==21) wt*=K_g(partons.front(),pa)/HEJ::C_F;
if (bptype==21) wt*=K_g(partons.back(),pb)/HEJ::C_F;
if(wqq)
return wt*ME_WCenqqx_qq(pa, pb, pl, plbar, partons,(bptype<0),(aptype<0),
swap_q_qx, nabove, Wprop);
return wt*ME_W_Cenqqx_qq(pa, pb, pl, plbar, partons, (bptype<0), (aptype<0),
swap_q_qx, nabove, nbelow, wc, Wprop);
}
/** \brief Matrix element squared for tree-level current-current scattering with Higgs
* @param aptype Particle a PDG ID
* @param bptype Particle b PDG ID
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param p1 Particle 1 Momentum
* @param pa Particle a Momentum
* @param qH t-channel momentum before Higgs
* @param qHp1 t-channel momentum after Higgs
* @returns ME Squared for Tree-Level Current-Current Scattering with Higgs
*/
double ME_Higgs_current(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & qH, // t-channel momentum before Higgs
CLHEP::HepLorentzVector const & qHp1, // t-channel momentum after Higgs
double mt, bool include_bottom, double mb, double vev
){
if (aptype==21&&bptype==21) // gg initial state
return ME_H_gg(pn,pb,p1,pa,-qHp1,-qH,mt,include_bottom,mb,vev);
else if (aptype==21&&bptype!=21) {
if (bptype > 0)
return ME_H_qg(pn,pb,p1,pa,-qHp1,-qH,mt,include_bottom,mb,vev)*4./9.;
else
return ME_H_qbarg(pn,pb,p1,pa,-qHp1,-qH,mt,include_bottom,mb,vev)*4./9.;
}
else if (bptype==21&&aptype!=21) {
if (aptype > 0)
return ME_H_qg(p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev)*4./9.;
else
return ME_H_qbarg(p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev)*4./9.;
}
else { // they are both quark
if (bptype>0) {
if (aptype>0)
return ME_H_qQ(pn,pb,p1,pa,-qHp1,-qH,mt,include_bottom,mb,vev)*4.*4./(9.*9.);
else
return ME_H_qQbar(pn,pb,p1,pa,-qHp1,-qH,mt,include_bottom,mb,vev)*4.*4./(9.*9.);
}
else {
if (aptype>0)
return ME_H_qQbar(p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev)*4.*4./(9.*9.);
else
return ME_H_qbarQbar(pn,pb,p1,pa,-qHp1,-qH,mt,include_bottom,mb,vev)*4.*4./(9.*9.);
}
}
throw std::logic_error("unknown particle types");
}
/** \brief Current matrix element squared with Higgs and unordered backward emission
* @param aptype Particle A PDG ID
* @param bptype Particle B PDG ID
* @param pn Particle n Momentum
* @param pb Particle b Momentum
* @param pg Unordered back Particle Momentum
* @param p1 Particle 1 Momentum
* @param pa Particle a Momentum
* @param qH t-channel momentum before Higgs
* @param qHp1 t-channel momentum after Higgs
* @returns ME Squared with Higgs and unordered backward emission
*
* @note This function assumes unordered gluon backwards from pa-p1 current.
* For unof, reverse call order
*/
double ME_Higgs_current_uno(
int aptype, int bptype,
CLHEP::HepLorentzVector const & pg,
CLHEP::HepLorentzVector const & pn,
CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1,
CLHEP::HepLorentzVector const & pa,
CLHEP::HepLorentzVector const & qH, // t-channel momentum before Higgs
CLHEP::HepLorentzVector const & qHp1, // t-channel momentum after Higgs
double mt, bool include_bottom, double mb, double vev
){
if (bptype==21&&aptype!=21) {
if (aptype > 0)
return ME_H_unob_gQ(pg,p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev);
else
return ME_H_unob_gQbar(pg,p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev);
}
else { // they are both quark
if (aptype>0) {
if (bptype>0)
return ME_H_unob_qQ(pg,p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev);
else
return ME_H_unob_qbarQ(pg,p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev);
}
else {
if (bptype>0)
return ME_H_unob_qQbar(pg,p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev);
else
return ME_H_unob_qbarQbar(pg,p1,pa,pn,pb,-qH,-qHp1,mt,include_bottom,mb,vev);
}
}
throw std::logic_error("unknown particle types");
}
CLHEP::HepLorentzVector to_HepLorentzVector(HEJ::Particle const & particle){
return {particle.p.px(), particle.p.py(), particle.p.pz(), particle.p.E()};
}
void validate(HEJ::MatrixElementConfig const & config) {
#ifndef HEJ_BUILD_WITH_QCDLOOP
if(!config.Higgs_coupling.use_impact_factors) {
throw std::invalid_argument{
"Invalid Higgs coupling settings.\n"
"HEJ without QCDloop support can only use impact factors.\n"
"Set use_impact_factors to true or recompile HEJ.\n"
};
}
#endif
if(config.Higgs_coupling.use_impact_factors
&& config.Higgs_coupling.mt != std::numeric_limits<double>::infinity()) {
throw std::invalid_argument{
"Conflicting settings: "
"impact factors may only be used in the infinite top mass limit"
};
}
}
} // namespace anonymous
MatrixElement::MatrixElement(
std::function<double (double)> alpha_s,
MatrixElementConfig conf
):
alpha_s_{std::move(alpha_s)},
param_{std::move(conf)}
{
validate(param_);
}
double MatrixElement::tree_kin(
Event const & ev
) const {
if(! is_resummable(ev.type())) return 0.;
auto AWZH_boson = std::find_if(
begin(ev.outgoing()), end(ev.outgoing()),
[](Particle const & p){return is_AWZH_boson(p);}
);
if(AWZH_boson == end(ev.outgoing()))
return tree_kin_jets(ev);
switch(AWZH_boson->type){
case pid::Higgs:
return tree_kin_Higgs(ev);
case pid::Wp:
case pid::Wm:
return tree_kin_W(ev);
// TODO
case pid::photon:
case pid::Z:
default:
throw not_implemented("Emission of boson of unsupported type");
}
}
namespace{
constexpr int extremal_jet_idx = 1;
constexpr int no_extremal_jet_idx = 0;
bool treat_as_extremal(Particle const & parton){
return parton.p.user_index() == extremal_jet_idx;
}
template<class InputIterator>
double FKL_ladder_weight(
InputIterator begin_gluon, InputIterator end_gluon,
CLHEP::HepLorentzVector const & q0,
CLHEP::HepLorentzVector const & pa, CLHEP::HepLorentzVector const & pb,
CLHEP::HepLorentzVector const & p1, CLHEP::HepLorentzVector const & pn,
double lambda
){
double wt = 1;
auto qi = q0;
for(auto gluon_it = begin_gluon; gluon_it != end_gluon; ++gluon_it){
assert(gluon_it->type == pid::gluon);
const auto g = to_HepLorentzVector(*gluon_it);
const auto qip1 = qi - g;
if(treat_as_extremal(*gluon_it)){
wt *= C2Lipatovots(qip1, qi, pa, pb, lambda)*C_A;
} else{
wt *= C2Lipatovots(qip1, qi, pa, pb, p1, pn, lambda)*C_A;
}
qi = qip1;
}
return wt;
}
} // namespace anonymous
std::vector<Particle> MatrixElement::tag_extremal_jet_partons(
Event const & ev
) const{
auto out_partons = filter_partons(ev.outgoing());
if(out_partons.size() == ev.jets().size()){
// no additional emissions in extremal jets, don't need to tag anything
for(auto & parton: out_partons){
parton.p.set_user_index(no_extremal_jet_idx);
}
return out_partons;
}
const auto & jets = ev.jets();
assert(jets.size() >= 2);
auto most_backward = begin(jets);
auto most_forward = end(jets) - 1;
// skip jets caused by unordered emission or qqx
if(ev.type() == event_type::unob || ev.type() == event_type::qqxexb){
assert(jets.size() >= 3);
++most_backward;
}
else if(ev.type() == event_type::unof || ev.type() == event_type::qqxexf){
assert(jets.size() >= 3);
--most_forward;
}
const auto extremal_jet_indices = ev.particle_jet_indices(
{*most_backward, *most_forward}
);
assert(extremal_jet_indices.size() == out_partons.size());
for(size_t i = 0; i < out_partons.size(); ++i){
assert(HEJ::is_parton(out_partons[i]));
const int idx = (extremal_jet_indices[i]>=0)?
extremal_jet_idx:
no_extremal_jet_idx;
out_partons[i].p.set_user_index(idx);
}
return out_partons;
}
namespace {
template<class InIter, class partIter>
double tree_kin_jets_qqx(InIter BeginIn, InIter EndIn, partIter BeginPart,
partIter EndPart, double lambda){
const bool swap_q_qx = is_quark(*BeginPart);
const auto pgin = to_HepLorentzVector(*BeginIn);
const auto pb = to_HepLorentzVector(*(EndIn-1));
// @TODO: Check assignment of pq + pqbar consistent.
const auto pq = to_HepLorentzVector(*(BeginPart+(swap_q_qx?0:1)));
const auto pqbar = to_HepLorentzVector(*(BeginPart+(swap_q_qx?1:0)));
const auto p1 = to_HepLorentzVector(*(BeginPart));
const auto pn = to_HepLorentzVector(*(EndPart-1));
assert((BeginIn)->type==21); // Incoming a must be gluon.
const double current_factor = ME_qqx_current(
(EndIn-1)->type, pgin, pq, pqbar, pn, pb, swap_q_qx
)/(4.*(N_C*N_C - 1.));
const double ladder_factor = FKL_ladder_weight(
(BeginPart+2), (EndPart-1),
pgin-pq-pqbar, pgin, pb, p1, pn, lambda
);
return current_factor*ladder_factor;
}
template<class InIter, class partIter>
double tree_kin_jets_uno(InIter BeginIn, InIter EndIn, partIter BeginPart,
partIter EndPart, double lambda){
const auto pa = to_HepLorentzVector(*BeginIn);
const auto pb = to_HepLorentzVector(*(EndIn-1));
const auto pg = to_HepLorentzVector(*BeginPart);
const auto p1 = to_HepLorentzVector(*(BeginPart+1));
const auto pn = to_HepLorentzVector(*(EndPart-1));
const double current_factor = ME_uno_current(
(BeginIn)->type, (EndIn-1)->type, pg, pn, pb, p1, pa
)/(4.*(N_C*N_C - 1.));
const double ladder_factor = FKL_ladder_weight(
(BeginPart+2), (EndPart-1),
pa-p1-pg, pa, pb, p1, pn, lambda
);
return current_factor*ladder_factor;
}
}
double MatrixElement::tree_kin_jets(Event const & ev) const {
auto const & incoming = ev.incoming();
const auto partons = tag_extremal_jet_partons(ev);
if (ev.type()==HEJ::event_type::FKL){
const auto pa = to_HepLorentzVector(incoming[0]);
const auto pb = to_HepLorentzVector(incoming[1]);
const auto p1 = to_HepLorentzVector(partons.front());
const auto pn = to_HepLorentzVector(partons.back());
return ME_current(
incoming[0].type, incoming[1].type,
pn, pb, p1, pa
)/(4.*(N_C*N_C - 1.))*FKL_ladder_weight(
begin(partons) + 1, end(partons) - 1,
pa - p1, pa, pb, p1, pn,
param_.regulator_lambda
);
}
else if (ev.type()==HEJ::event_type::unordered_backward){
return tree_kin_jets_uno(incoming.begin(), incoming.end(),
partons.begin(), partons.end(),
param_.regulator_lambda);
}
else if (ev.type()==HEJ::event_type::unordered_forward){
return tree_kin_jets_uno(incoming.rbegin(), incoming.rend(),
partons.rbegin(), partons.rend(),
param_.regulator_lambda);
}
else if (ev.type()==HEJ::event_type::extremal_qqxb){
return tree_kin_jets_qqx(incoming.begin(), incoming.end(),
partons.begin(), partons.end(),
param_.regulator_lambda);
}
else if (ev.type()==HEJ::event_type::extremal_qqxf){
return tree_kin_jets_qqx(incoming.rbegin(), incoming.rend(),
partons.rbegin(), partons.rend(),
param_.regulator_lambda);
}
else {
throw std::logic_error("Can only reweight FKL, uno or ExQQx processes in Pure Jets");
}
}
namespace{
double tree_kin_W_FKL(
int aptype, int bptype, HLV pa, HLV pb,
std::vector<Particle> const & partons,
HLV plbar, HLV pl,
double lambda, ParticleProperties const & Wprop
){
auto p1 = to_HepLorentzVector(partons[0]);
auto pn = to_HepLorentzVector(partons[partons.size() - 1]);
const auto begin_ladder = cbegin(partons) + 1;
const auto end_ladder = cend(partons) - 1;
bool wc = aptype==partons[0].type; //leg b emits w
auto q0 = pa - p1;
if(!wc)
q0 -= pl + plbar;
const double current_factor = ME_W_current(
aptype, bptype, pn, pb,
p1, pa, plbar, pl, wc, Wprop
);
const double ladder_factor = FKL_ladder_weight(
begin_ladder, end_ladder,
q0, pa, pb, p1, pn,
lambda
);
return current_factor*ladder_factor;
}
template<class InIter, class partIter>
double tree_kin_W_uno(InIter BeginIn, partIter BeginPart,
partIter EndPart, const HLV & plbar, const HLV & pl,
double lambda, ParticleProperties const & Wprop){
const auto pa = to_HepLorentzVector(*BeginIn);
const auto pb = to_HepLorentzVector(*(BeginIn+1));
const auto pg = to_HepLorentzVector(*BeginPart);
const auto p1 = to_HepLorentzVector(*(BeginPart+1));
const auto pn = to_HepLorentzVector(*(EndPart-1));
bool wc = (BeginIn)->type==(BeginPart+1)->type; //leg b emits w
auto q0 = pa - p1 - pg;
if(!wc)
q0 -= pl + plbar;
const double current_factor = ME_W_uno_current(
(BeginIn)->type, (BeginIn+1)->type, pn, pb,
p1, pa, pg, plbar, pl, wc, Wprop
);
const double ladder_factor = FKL_ladder_weight(
BeginPart+2, EndPart-1,
q0, pa, pb, p1, pn,
lambda
);
return current_factor*C_A*C_A/(N_C*N_C-1.)*ladder_factor;
}
template<class InIter, class partIter>
double tree_kin_W_qqx(InIter BeginIn, partIter BeginPart,
partIter EndPart, const HLV & plbar, const HLV & pl,
double lambda, ParticleProperties const & Wprop){
const bool swap_q_qx=is_quark(*BeginPart);
const auto pa = to_HepLorentzVector(*BeginIn);
const auto pb = to_HepLorentzVector(*(BeginIn+1));
const auto pq = to_HepLorentzVector(*(BeginPart+(swap_q_qx?0:1)));
const auto pqbar = to_HepLorentzVector(*(BeginPart+(swap_q_qx?1:0)));
const auto p1 = to_HepLorentzVector(*(BeginPart));
const auto pn = to_HepLorentzVector(*(EndPart-1));
const bool wc = (BeginIn+1)->type!=(EndPart-1)->type; //leg b emits w
auto q0 = pa - pq - pqbar;
if(!wc)
q0 -= pl + plbar;
const double current_factor = ME_W_qqx_current(
(BeginIn)->type, (BeginIn+1)->type, pa, pb,
pq, pqbar, pn, plbar, pl, swap_q_qx, wc, Wprop
);
const double ladder_factor = FKL_ladder_weight(
BeginPart+2, EndPart-1,
q0, pa, pb, p1, pn,
lambda
);
return current_factor*C_A*C_A/(N_C*N_C-1.)*ladder_factor;
}
double tree_kin_W_qqxmid(
int aptype, int bptype, HLV pa, HLV pb,
std::vector<Particle> const & partons,
HLV plbar, HLV pl,
double lambda, ParticleProperties const & Wprop
){
HLV pq,pqbar;
const auto backmidquark = std::find_if(
begin(partons)+1, end(partons)-1,
[](Particle const & s){ return s.type != pid::gluon; }
);
assert(backmidquark!=end(partons)-1);
if (is_quark(backmidquark->type)){
pq = to_HepLorentzVector(*backmidquark);
pqbar = to_HepLorentzVector(*(backmidquark+1));
}
else {
pqbar = to_HepLorentzVector(*backmidquark);
pq = to_HepLorentzVector(*(backmidquark+1));
}
auto p1 = to_HepLorentzVector(partons[0]);
auto pn = to_HepLorentzVector(partons[partons.size() - 1]);
auto q0 = pa - p1;
// t-channel momentum after qqx
auto qqxt = q0;
bool wc, wqq;
if (backmidquark->type == -(backmidquark+1)->type){ // Central qqx does not emit
wqq=false;
if (aptype==partons[0].type) {
wc = true;
}
else{
wc = false;
q0-=pl+plbar;
}
}
else{
wqq = true;
wc = false;
qqxt-=pl+plbar;
}
const auto begin_ladder = cbegin(partons) + 1;
const auto end_ladder_1 = (backmidquark);
const auto begin_ladder_2 = (backmidquark+2);
const auto end_ladder = cend(partons) - 1;
for(auto parton_it = begin_ladder; parton_it < begin_ladder_2; ++parton_it){
qqxt -= to_HepLorentzVector(*parton_it);
}
int nabove = std::distance(begin_ladder, backmidquark);
int nbelow = std::distance(begin_ladder_2, end_ladder);
std::vector<HLV> partonsHLV;
partonsHLV.reserve(partons.size());
for (size_t i = 0; i != partons.size(); ++i) {
partonsHLV.push_back(to_HepLorentzVector(partons[i]));
}
const double current_factor = ME_W_qqxmid_current(
aptype, bptype, nabove, nbelow, pa, pb,
pq, pqbar, partonsHLV, plbar, pl, wqq, wc, Wprop
);
const double ladder_factor = FKL_ladder_weight(
begin_ladder, end_ladder_1,
q0, pa, pb, p1, pn,
lambda
)*FKL_ladder_weight(
begin_ladder_2, end_ladder,
qqxt, pa, pb, p1, pn,
lambda
);
return current_factor*C_A*C_A/(N_C*N_C-1.)*ladder_factor;
}
} // namespace anonymous
double MatrixElement::tree_kin_W(Event const & ev) const {
using namespace event_type;
auto const & incoming(ev.incoming());
- auto const & decays(ev.decays());
+
+ #ifndef NDEBUG
+ // assert that there is exactly one decay corresponding to the W
+ assert(ev.decays().size() == 1);
+ auto const & w_boson{
+ std::find_if(ev.outgoing().cbegin(), ev.outgoing().cend(),
+ [] (Particle const & p) -> bool {
+ return std::abs(p.type) == ParticleID::Wp;
+ }) };
+ assert(w_boson != ev.outgoing().cend());
+ assert( (long int) ev.decays().cbegin()->first
+ == std::distance(ev.outgoing().cbegin(), w_boson) );
+ #endif
+
+ // find decay products of W
+ auto const & decay{ ev.decays().cbegin()->second };
+ assert(decay.size() == 2);
+ assert( ( is_anylepton(decay.at(0)) && is_anyneutrino(decay.at(1)) )
+ || ( is_anylepton(decay.at(1)) && is_anyneutrino(decay.at(0)) ) );
+
+ // get lepton & neutrino
HLV plbar, pl;
- for (auto& x: decays) {
- if (x.second.at(0).type < 0){
- plbar = to_HepLorentzVector(x.second.at(0));
- pl = to_HepLorentzVector(x.second.at(1));
- }
- else{
- pl = to_HepLorentzVector(x.second.at(0));
- plbar = to_HepLorentzVector(x.second.at(1));
- }
+ if (decay.at(0).type < 0){
+ plbar = to_HepLorentzVector(decay.at(0));
+ pl = to_HepLorentzVector(decay.at(1));
}
+ else{
+ pl = to_HepLorentzVector(decay.at(0));
+ plbar = to_HepLorentzVector(decay.at(1));
+ }
+
const auto pa = to_HepLorentzVector(incoming[0]);
const auto pb = to_HepLorentzVector(incoming[1]);
const auto partons = tag_extremal_jet_partons(ev);
if(ev.type() == FKL){
return tree_kin_W_FKL(incoming[0].type, incoming[1].type,
pa, pb, partons, plbar, pl,
param_.regulator_lambda,
param_.ew_parameters.Wprop());
}
if(ev.type() == unordered_backward){
return tree_kin_W_uno(cbegin(incoming), cbegin(partons),
cend(partons), plbar, pl,
param_.regulator_lambda,
param_.ew_parameters.Wprop());
}
if(ev.type() == unordered_forward){
return tree_kin_W_uno(crbegin(incoming), crbegin(partons),
crend(partons), plbar, pl,
param_.regulator_lambda,
param_.ew_parameters.Wprop());
}
if(ev.type() == extremal_qqxb){
return tree_kin_W_qqx(cbegin(incoming), cbegin(partons),
cend(partons), plbar, pl,
param_.regulator_lambda,
param_.ew_parameters.Wprop());
}
if(ev.type() == extremal_qqxf){
return tree_kin_W_qqx(crbegin(incoming), crbegin(partons),
crend(partons), plbar, pl,
param_.regulator_lambda,
param_.ew_parameters.Wprop());
}
assert(ev.type() == central_qqx);
return tree_kin_W_qqxmid(incoming[0].type, incoming[1].type,
pa, pb, partons, plbar, pl,
param_.regulator_lambda,
param_.ew_parameters.Wprop());
}
double MatrixElement::tree_kin_Higgs(Event const & ev) const {
if(is_uno(ev.type())){
return tree_kin_Higgs_between(ev);
}
if(ev.outgoing().front().type == pid::Higgs){
return tree_kin_Higgs_first(ev);
}
if(ev.outgoing().back().type == pid::Higgs){
return tree_kin_Higgs_last(ev);
}
return tree_kin_Higgs_between(ev);
}
namespace {
// Colour acceleration multipliers, for gluons see eq. (7) in arXiv:0910.5113
#ifdef HEJ_BUILD_WITH_QCDLOOP
// TODO: code duplication with jets.cc
double K_g(double p1minus, double paminus) {
return 1./2.*(p1minus/paminus + paminus/p1minus)*(C_A - 1./C_A) + 1./C_A;
}
double K_g(
CLHEP::HepLorentzVector const & pout,
CLHEP::HepLorentzVector const & pin
) {
if(pin.z() > 0) return K_g(pout.plus(), pin.plus());
return K_g(pout.minus(), pin.minus());
}
double K(
ParticleID type,
CLHEP::HepLorentzVector const & pout,
CLHEP::HepLorentzVector const & pin
) {
if(type == ParticleID::gluon) return K_g(pout, pin);
return C_F;
}
#endif
// Colour factor in strict MRK limit
double K_MRK(ParticleID type) {
return (type == ParticleID::gluon)?C_A:C_F;
}
}
double MatrixElement::MH2_forwardH(
CLHEP::HepLorentzVector const & p1out,
CLHEP::HepLorentzVector const & p1in,
ParticleID type2,
CLHEP::HepLorentzVector const & p2out,
CLHEP::HepLorentzVector const & p2in,
CLHEP::HepLorentzVector const & pH,
double t1, double t2
) const{
ignore(p2out, p2in);
const double shat = p1in.invariantMass2(p2in);
const double vev = param_.ew_parameters.vev();
// gluon case
#ifdef HEJ_BUILD_WITH_QCDLOOP
if(!param_.Higgs_coupling.use_impact_factors){
return K(type2, p2out, p2in)*C_A*1./(16*M_PI*M_PI)*t1/t2*ME_Houtside_gq(
p1out, p1in, p2out, p2in, pH,
param_.Higgs_coupling.mt, param_.Higgs_coupling.include_bottom,
param_.Higgs_coupling.mb, vev
)/(4*(N_C*N_C - 1));
}
#endif
return K_MRK(type2)/C_A*9./2.*shat*shat*(
C2gHgp(p1in,p1out,pH,vev) + C2gHgm(p1in,p1out,pH,vev)
)/(t1*t2);
}
double MatrixElement::tree_kin_Higgs_first(Event const & ev) const {
auto const & incoming = ev.incoming();
auto const & outgoing = ev.outgoing();
assert(outgoing.front().type == pid::Higgs);
if(outgoing[1].type != pid::gluon) {
assert(incoming.front().type == outgoing[1].type);
return tree_kin_Higgs_between(ev);
}
const auto pH = to_HepLorentzVector(outgoing.front());
const auto partons = tag_extremal_jet_partons(
ev
);
const auto pa = to_HepLorentzVector(incoming[0]);
const auto pb = to_HepLorentzVector(incoming[1]);
const auto p1 = to_HepLorentzVector(partons.front());
const auto pn = to_HepLorentzVector(partons.back());
const auto q0 = pa - p1 - pH;
const double t1 = q0.m2();
const double t2 = (pn - pb).m2();
return MH2_forwardH(
p1, pa, incoming[1].type, pn, pb, pH,
t1, t2
)*FKL_ladder_weight(
begin(partons) + 1, end(partons) - 1,
q0, pa, pb, p1, pn,
param_.regulator_lambda
);
}
double MatrixElement::tree_kin_Higgs_last(Event const & ev) const {
auto const & incoming = ev.incoming();
auto const & outgoing = ev.outgoing();
assert(outgoing.back().type == pid::Higgs);
if(outgoing[outgoing.size()-2].type != pid::gluon) {
assert(incoming.back().type == outgoing[outgoing.size()-2].type);
return tree_kin_Higgs_between(ev);
}
const auto pH = to_HepLorentzVector(outgoing.back());
const auto partons = tag_extremal_jet_partons(
ev
);
const auto pa = to_HepLorentzVector(incoming[0]);
const auto pb = to_HepLorentzVector(incoming[1]);
auto p1 = to_HepLorentzVector(partons.front());
const auto pn = to_HepLorentzVector(partons.back());
auto q0 = pa - p1;
const double t1 = q0.m2();
const double t2 = (pn + pH - pb).m2();
return MH2_forwardH(
pn, pb, incoming[0].type, p1, pa, pH,
t2, t1
)*FKL_ladder_weight(
begin(partons) + 1, end(partons) - 1,
q0, pa, pb, p1, pn,
param_.regulator_lambda
);
}
namespace {
template<class InIter, class partIter>
double tree_kin_Higgs_uno(InIter BeginIn, InIter EndIn, partIter BeginPart,
partIter EndPart, const HLV & qH, const HLV & qHp1,
double mt, bool inc_bot, double mb, double vev){
const auto pa = to_HepLorentzVector(*BeginIn);
const auto pb = to_HepLorentzVector(*(EndIn-1));
const auto pg = to_HepLorentzVector(*BeginPart);
const auto p1 = to_HepLorentzVector(*(BeginPart+1));
const auto pn = to_HepLorentzVector(*(EndPart-1));
return ME_Higgs_current_uno(
(BeginIn)->type, (EndIn-1)->type, pg, pn, pb, p1, pa,
qH, qHp1, mt, inc_bot, mb, vev
);
}
}
double MatrixElement::tree_kin_Higgs_between(Event const & ev) const {
using namespace event_type;
auto const & incoming = ev.incoming();
auto const & outgoing = ev.outgoing();
const auto the_Higgs = std::find_if(
begin(outgoing), end(outgoing),
[](Particle const & s){ return s.type == pid::Higgs; }
);
assert(the_Higgs != end(outgoing));
const auto pH = to_HepLorentzVector(*the_Higgs);
const auto partons = tag_extremal_jet_partons(ev);
const auto pa = to_HepLorentzVector(incoming[0]);
const auto pb = to_HepLorentzVector(incoming[1]);
auto p1 = to_HepLorentzVector(
partons[(ev.type() == unob)?1:0]
);
auto pn = to_HepLorentzVector(
partons[partons.size() - ((ev.type() == unof)?2:1)]
);
auto first_after_Higgs = begin(partons) + (the_Higgs-begin(outgoing));
assert(
(first_after_Higgs == end(partons) && (
(ev.type() == unob)
|| partons.back().type != pid::gluon
))
|| first_after_Higgs->rapidity() >= the_Higgs->rapidity()
);
assert(
(first_after_Higgs == begin(partons) && (
(ev.type() == unof)
|| partons.front().type != pid::gluon
))
|| (first_after_Higgs-1)->rapidity() <= the_Higgs->rapidity()
);
// always treat the Higgs as if it were in between the extremal FKL partons
if(first_after_Higgs == begin(partons)) ++first_after_Higgs;
else if(first_after_Higgs == end(partons)) --first_after_Higgs;
// t-channel momentum before Higgs
auto qH = pa;
for(auto parton_it = begin(partons); parton_it != first_after_Higgs; ++parton_it){
qH -= to_HepLorentzVector(*parton_it);
}
auto q0 = pa - p1;
auto begin_ladder = begin(partons) + 1;
auto end_ladder = end(partons) - 1;
double current_factor;
if(ev.type() == FKL){
current_factor = ME_Higgs_current(
incoming[0].type, incoming[1].type,
pn, pb, p1, pa, qH, qH - pH,
param_.Higgs_coupling.mt,
param_.Higgs_coupling.include_bottom, param_.Higgs_coupling.mb,
param_.ew_parameters.vev()
);
}
else if(ev.type() == unob){
current_factor = HEJ::C_A*HEJ::C_A/2*tree_kin_Higgs_uno(
begin(incoming), end(incoming), begin(partons),
end(partons), qH, qH-pH, param_.Higgs_coupling.mt,
param_.Higgs_coupling.include_bottom, param_.Higgs_coupling.mb,
param_.ew_parameters.vev()
);
const auto p_unob = to_HepLorentzVector(partons.front());
q0 -= p_unob;
p1 += p_unob;
++begin_ladder;
}
else if(ev.type() == unof){
current_factor = HEJ::C_A*HEJ::C_A/2*tree_kin_Higgs_uno(
rbegin(incoming), rend(incoming), rbegin(partons),
rend(partons), qH-pH, qH, param_.Higgs_coupling.mt,
param_.Higgs_coupling.include_bottom, param_.Higgs_coupling.mb,
param_.ew_parameters.vev()
);
pn += to_HepLorentzVector(partons.back());
--end_ladder;
}
else{
throw std::logic_error("Can only reweight FKL or uno processes in H+Jets");
}
const double ladder_factor = FKL_ladder_weight(
begin_ladder, first_after_Higgs,
q0, pa, pb, p1, pn,
param_.regulator_lambda
)*FKL_ladder_weight(
first_after_Higgs, end_ladder,
qH - pH, pa, pb, p1, pn,
param_.regulator_lambda
);
return current_factor*C_A*C_A/(N_C*N_C-1.)*ladder_factor;
}
namespace {
double get_AWZH_coupling(Event const & ev, double alpha_s, double alpha_w) {
const auto AWZH_boson = std::find_if(
begin(ev.outgoing()), end(ev.outgoing()),
[](auto const & p){return is_AWZH_boson(p);}
);
if(AWZH_boson == end(ev.outgoing())) return 1.;
switch(AWZH_boson->type){
case pid::Higgs:
return alpha_s*alpha_s;
case pid::Wp:
case pid::Wm:
return alpha_w*alpha_w;
// TODO
case pid::photon:
case pid::Z:
default:
throw not_implemented("Emission of boson of unsupported type");
}
}
}
double MatrixElement::tree_param(Event const & ev, double mur) const {
assert(is_resummable(ev.type()));
const auto begin_partons = ev.begin_partons();
const auto end_partons = ev.end_partons();
const auto num_partons = std::distance(begin_partons, end_partons);
const double alpha_s = alpha_s_(mur);
const double gs2 = 4.*M_PI*alpha_s;
double res = std::pow(gs2, num_partons);
if(param_.log_correction){
// use alpha_s(q_perp), evolved to mur
assert(num_partons >= 2);
const auto first_emission = std::next(begin_partons);
const auto last_emission = std::prev(end_partons);
for(auto parton = first_emission; parton != last_emission; ++parton){
res *= 1. + alpha_s/(2.*M_PI)*beta0*log(mur/parton->perp());
}
}
return get_AWZH_coupling(ev, alpha_s, param_.ew_parameters.alpha_w())*res;
}
} // namespace HEJ
diff --git a/t/CMakeLists.txt b/t/CMakeLists.txt
index 9a288e8..c9d762b 100644
--- a/t/CMakeLists.txt
+++ b/t/CMakeLists.txt
@@ -1,285 +1,297 @@
set(tst_dir "${CMAKE_CURRENT_SOURCE_DIR}")
set(tst_ME_data_dir "${tst_dir}/ME_data")
# test event classification
add_executable(test_classify ${tst_dir}/test_classify.cc)
target_link_libraries(test_classify HEJ)
add_test(
NAME t_classify
COMMAND test_classify
)
add_executable(test_classify_ref ${tst_dir}/test_classify_ref.cc)
target_link_libraries(test_classify_ref HEJ)
add_test(
NAME t_classify_ref
COMMAND test_classify_ref ${tst_dir}/classify_ref ${tst_dir}/classify.lhe.gz
)
add_test(
NAME t_classify_ref_4j
COMMAND test_classify_ref ${tst_dir}/classify_ref_4j ${tst_dir}/4j.lhe.gz
)
+add_test(
+ NAME t_classify_ref_W4j
+ COMMAND test_classify_ref ${tst_dir}/classify_ref_W4j ${tst_dir}/MGemnubar4j_unweighted.lhe.gz
+ )
+
+# test for valid W decays
+add_executable(test_decay ${tst_dir}/test_decay.cc)
+target_link_libraries(test_decay HEJ)
+add_test(
+ NAME t_valid_decay
+ COMMAND test_decay
+ )
# test phase space point
add_executable(test_psp ${tst_dir}/test_psp.cc)
target_link_libraries(test_psp HEJ)
add_test(
NAME t_psp
COMMAND test_psp ${tst_dir}/psp_gen.lhe.gz
)
# test importing scales
add_library(scales SHARED ${tst_dir}/scales.cc)
target_link_libraries(scales HEJ)
add_executable(test_scale_import ${tst_dir}/test_scale_import)
target_link_libraries(test_scale_import HEJ)
add_test(
NAME t_scale_import
COMMAND test_scale_import ${tst_dir}/jet_config_with_import.yml
)
# test scale arithmetic (e.g. 2*H_T/4)
add_executable(test_scale_arithmetics ${tst_dir}/test_scale_arithmetics)
target_link_libraries(test_scale_arithmetics HEJ)
add_test(
NAME t_scale_arithmetics
COMMAND test_scale_arithmetics ${tst_dir}/jet_config.yml ${tst_dir}/2j.lhe.gz
)
# test "ParameterDescription"
add_executable(test_descriptions ${tst_dir}/test_descriptions)
target_link_libraries(test_descriptions HEJ)
add_test(
NAME t_descriptions
COMMAND test_descriptions
)
# test "EventParameters*Weight"
add_executable(test_parameters ${tst_dir}/test_parameters)
target_link_libraries(test_parameters HEJ)
add_test(
NAME test_parameters
COMMAND test_parameters
)
# test unweighting
add_executable(test_unweighter ${tst_dir}/test_unweighter)
target_link_libraries(test_unweighter HEJ)
add_test(
NAME test_unweighter
COMMAND test_unweighter ${tst_dir}/4j.lhe.gz
)
# test colour generation
add_executable(test_colours ${tst_dir}/test_colours)
target_link_libraries(test_colours HEJ)
add_test(
NAME t_colour_flow
COMMAND test_colours
)
# test matrix elements
add_executable(test_ME_generic ${tst_dir}/test_ME_generic.cc)
target_link_libraries(test_ME_generic HEJ)
add_test(
NAME t_ME_j
COMMAND test_ME_generic ${tst_ME_data_dir}/config_mtinf.yml ${tst_ME_data_dir}/ME_jets_tree.dat ${tst_ME_data_dir}/PSP_jets.lhe.gz
)
add_test(
NAME t_ME_j_virt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_mtinf.yml ${tst_ME_data_dir}/ME_jets_tree_virt.dat ${tst_ME_data_dir}/PSP_jets.lhe.gz
)
add_test(
NAME t_ME_h
COMMAND test_ME_generic ${tst_ME_data_dir}/config_mtinf.yml ${tst_ME_data_dir}/ME_h_mtinf_tree.dat ${tst_ME_data_dir}/PSP_h.lhe.gz
)
add_test(
NAME t_ME_h_virt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_mtinf.yml ${tst_ME_data_dir}/ME_h_mtinf_virt.dat ${tst_ME_data_dir}/PSP_h.lhe.gz
)
if(${QCDloop_FOUND})
add_test(
NAME t_ME_h_mt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_mt.yml ${tst_ME_data_dir}/ME_h_mt_tree.dat ${tst_ME_data_dir}/PSP_h.lhe.gz
)
add_test(
NAME t_ME_h_mtmb
COMMAND test_ME_generic ${tst_ME_data_dir}/config_mtmb.yml ${tst_ME_data_dir}/ME_h_mtmb_tree.dat ${tst_ME_data_dir}/PSP_h.lhe.gz
)
endif()
add_test(
NAME t_ME_j_subl
COMMAND test_ME_generic ${tst_ME_data_dir}/config_pure.yml ${tst_ME_data_dir}/ME_jets_subl_tree.dat ${tst_ME_data_dir}/PSP_jets_subl.lhe.gz
)
add_test(
NAME t_ME_j_subl_virt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_pure.yml ${tst_ME_data_dir}/ME_jets_subl_tree_virt.dat ${tst_ME_data_dir}/PSP_jets_subl.lhe.gz
)
add_test(
NAME t_ME_w_FKL
COMMAND test_ME_generic ${tst_ME_data_dir}/config_w_ME.yml ${tst_ME_data_dir}/ME_w_FKL_tree.dat ${tst_ME_data_dir}/PSP_w_FKL.lhe.gz
)
add_test(
NAME t_ME_w_FKL_virt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_w_ME.yml ${tst_ME_data_dir}/ME_w_FKL_virt.dat ${tst_ME_data_dir}/PSP_w_FKL.lhe.gz
)
add_test(
NAME t_ME_Wp
COMMAND test_ME_generic ${tst_ME_data_dir}/config_w_ME.yml ${tst_ME_data_dir}/ME_Wp.dat ${tst_ME_data_dir}/PSP_Wp.lhe.gz
)
add_test(
NAME t_ME_Wp_virt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_w_ME.yml ${tst_ME_data_dir}/ME_Wp_virt.dat ${tst_ME_data_dir}/PSP_Wp.lhe.gz
)
add_test(
NAME t_ME_Wm
COMMAND test_ME_generic ${tst_ME_data_dir}/config_w_ME.yml ${tst_ME_data_dir}/ME_Wm.dat ${tst_ME_data_dir}/PSP_Wm.lhe.gz
)
add_test(
NAME t_ME_Wm_virt
COMMAND test_ME_generic ${tst_ME_data_dir}/config_w_ME.yml ${tst_ME_data_dir}/ME_Wm_virt.dat ${tst_ME_data_dir}/PSP_Wm.lhe.gz
)
# test main executable
file(COPY "${tst_dir}/jet_config.yml" DESTINATION "${CMAKE_BINARY_DIR}")
set(test_config "${CMAKE_BINARY_DIR}/jet_config.yml")
if(${HepMC3_FOUND})
file(READ ${test_config} config)
file(WRITE ${test_config} "${config} - tst.hepmc\n")
endif()
if(${HepMC_FOUND})
file(READ ${test_config} config)
file(WRITE ${test_config} "${config} - tst.hepmc2\n")
if(${rivet_FOUND})
file(READ ${test_config} config)
file(WRITE ${test_config} "${config}\nanalysis:\n rivet: MC_XS\n output: tst\n")
endif()
endif()
set(test_cmd_main "$<TARGET_FILE:HEJ_main>\\\;${test_config}\\\;${tst_dir}/2j.lhe.gz")
# check that HepMC3 output is correct
if(${HepMC3_FOUND})
add_executable(check_hepmc ${tst_dir}/check_hepmc.cc)
target_link_libraries(check_hepmc HEJ ${HEPMC3_LIBRARIES})
target_include_directories(check_hepmc PRIVATE ${HEPMC3_INCLUDE_DIR})
set(test_cmd_hepmc "$<TARGET_FILE:check_hepmc>\\\;tst.hepmc")
else()
set(test_cmd_hepmc "")
endif()
# check that LHEF output is correct
add_executable(check_lhe ${tst_dir}/check_lhe.cc)
target_link_libraries(check_lhe HEJ)
set(test_cmd_lhe "$<TARGET_FILE:check_lhe>\\\;tst.lhe")
# Run dependent tests in one command to ensure correct execution order
# Note: The commands are concatenated with "\;" to escape CMake lists.
# Thus arguments have to be escaped twice "\\\;".
# e.g. "cmd1\;cmd2\\\;arg1\\\;arg2" is executed like "cmd1 && cmd2 arg1 arg2"
add_test(
NAME t_main
COMMAND ${CMAKE_COMMAND}
-DCMDS=${test_cmd_main}\;${test_cmd_hepmc}\;${test_cmd_lhe}
-P ${PROJECT_SOURCE_DIR}/cmake/run_multiple_tests.cmake
)
# check HDF5 reader
if(${HighFive_FOUND})
add_executable(test_hdf5 ${tst_dir}/test_hdf5.cc)
target_link_libraries(test_hdf5 HEJ)
add_test(
NAME t_hdf5
COMMAND test_hdf5 ${tst_dir}/Wm9-g4-repack.hdf5
)
endif()
# check rivet interface
if(${RIVET_FOUND})
add_executable(check_rivet ${tst_dir}/check_rivet.cc)
target_link_libraries(check_rivet HEJ rivet::rivet HepMC::HepMC)
add_test(
NAME t_rivet
COMMAND check_rivet
)
endif()
# test boson reconstruction
add_executable(cmp_events ${tst_dir}/cmp_events.cc)
target_link_libraries(cmp_events HEJ)
add_test(
NAME t_epnu_2j_noW
COMMAND cmp_events ${tst_dir}/epnu2jLOFKL_unweight.lhe.tar.gz ${tst_dir}/epnu2jLOFKL_unweight_noW.lhe.gz
)
# test resummed result
add_executable(check_res ${tst_dir}/check_res.cc)
target_link_libraries(check_res HEJ)
if(${TEST_ALL}) # deactivate long tests by default
add_test(
NAME t_2j
COMMAND check_res ${tst_dir}/2j.lhe.gz 3.49391e+07 419684
)
add_test(
NAME t_3j
COMMAND check_res ${tst_dir}/3j.lhe.gz 2.37902e+06 25746.6
)
add_test(
NAME t_3j_unof
COMMAND check_res ${tst_dir}/3j.lhe.gz 133399 4688.83 unof
)
add_test(
NAME t_3j_unob
COMMAND check_res ${tst_dir}/3j.lhe.gz 105247 3449.45 unob
)
add_test(
NAME t_4j
COMMAND check_res ${tst_dir}/4j.lhe.gz 603713 72822.6
)
add_test(
NAME t_h_3j
COMMAND check_res ${tst_dir}/h_3j.lhe.gz 0.821622 0.0220334
)
add_test(
NAME t_h_3j_unof
COMMAND check_res ${tst_dir}/h_3j_uno.lhe.gz 0.0127362 0.000271555 unof
)
add_test(
NAME t_h_3j_unob
COMMAND check_res ${tst_dir}/h_3j_uno.lhe.gz 0.0130615 0.000224793 unob
)
add_test(
NAME t_epnu_2j
COMMAND check_res ${tst_dir}/epnu2jLOFKL_unweight.lhe.tar.gz 262.7 3
)
add_test(
NAME t_MGepnu_3j
COMMAND check_res ${tst_dir}/MGepnu3j_unweighted.lhe.gz 38.9512 1
)
add_test(
NAME t_MGemnubar_3j
COMMAND check_res ${tst_dir}/MGemnubar3j_unweighted.lhe.gz 24.1575 1
)
add_test(
NAME t_MGepnu_3j_unof
COMMAND check_res ${tst_dir}/MGepnu3j_unweighted.lhe.gz 9.63702 0.128355 unof
)
add_test(
NAME t_MGepnu_3j_unob
COMMAND check_res ${tst_dir}/MGepnu3j_unweighted.lhe.gz 9.70119 0.108436 unob
)
add_test(
NAME t_MGepnu_3j_splitf
COMMAND check_res ${tst_dir}/MGepnu3j_unweighted.lhe.gz 2.91995 0.0463182 splitf
)
add_test(
NAME t_MGepnu_3j_splitb
COMMAND check_res ${tst_dir}/MGepnu3j_unweighted.lhe.gz 3.40708 0.0550975 splitb
)
add_test(
NAME t_MGepnu_4j
COMMAND check_res ${tst_dir}/MGepnu4j_unweighted.lhe.gz 10.2542 0.135106
)
add_test(
NAME t_MGemnubar_4j
COMMAND check_res ${tst_dir}/MGemnubar4j_unweighted.lhe.gz 5.57909 0.0300496
)
add_test(
NAME t_MGepnu_4j_qqxmid
COMMAND check_res ${tst_dir}/MGepnu4j_unweighted.lhe.gz 0.732084 0.005 qqxmid
)
endif()
diff --git a/t/classify_ref b/t/classify_ref
index cae2ad5..c7d785e 100644
--- a/t/classify_ref
+++ b/t/classify_ref
@@ -1,125 +1,125 @@
8
4
4
4
4
4
4
8
4
8
4
4
4
16
4
8
4
4
8
8
4
4
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4
4
4
4
4
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4
4
4
4
4
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4
4
16
4
4
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4
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4
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4
8
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16
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4
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4
4
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16
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4
diff --git a/t/classify_ref_4j b/t/classify_ref_4j
index 196a157..056dd0f 100644
--- a/t/classify_ref_4j
+++ b/t/classify_ref_4j
@@ -1,3255 +1,3255 @@
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diff --git a/t/classify_ref_4j b/t/classify_ref_W4j
similarity index 53%
copy from t/classify_ref_4j
copy to t/classify_ref_W4j
index 196a157..0e37a12 100644
--- a/t/classify_ref_4j
+++ b/t/classify_ref_W4j
@@ -1,3255 +1,4000 @@
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diff --git a/t/test_ME_generic.cc b/t/test_ME_generic.cc
index e22b945..9e94c9d 100644
--- a/t/test_ME_generic.cc
+++ b/t/test_ME_generic.cc
@@ -1,199 +1,202 @@
/**
* \brief Generic tester for the ME for a given set of PSP
*
* \note reference weights and PSP (as LHE file) have to be given as
* _individual_ files
*
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include <algorithm>
#include <cmath>
#include <fstream>
#include <random>
#include "HEJ/Event.hh"
#include "HEJ/EventReader.hh"
#include "HEJ/MatrixElement.hh"
#include "HEJ/stream.hh"
#include "HEJ/YAMLreader.hh"
constexpr double alpha_s = 0.118;
constexpr double ep = 1e-5;
constexpr double ep_mirror = 1e-3;
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));
}
+ for(auto & decay: ev.decays){
+ std::shuffle(begin(decay.second), end(decay.second), ran);
+ }
}
}
enum MEComponent {tree, virt};
MEComponent guess_component(std::string const & data_file) {
if(data_file.find("virt") != data_file.npos) return MEComponent::virt;
return MEComponent::tree;
}
HEJ::Event::EventData mirror_event(HEJ::Event::EventData ev){
for(auto & part: ev.incoming){
auto & p{ part.p };
p.reset(p.px(),p.py(),-p.pz(),p.E());
}
for(auto & part: ev.outgoing){
auto & p{ part.p };
p.reset(p.px(),p.py(),-p.pz(),p.E());
}
for(auto & decay: ev.decays){
for(auto & part: decay.second){
auto & p{ part.p };
p.reset(p.px(),p.py(),-p.pz(),p.E());
}
}
return ev;
}
int main(int argn, char** argv){
if(argn != 4 && argn != 5){
std::cerr << "\n# Usage:\n."<< argv[0] <<" config.yml ME_weights input_file.lhe\n\n";
return EXIT_FAILURE;
}
bool OUTPUT_MODE = false;
if(argn == 5 && std::string("OUTPUT")==std::string(argv[4]))
OUTPUT_MODE = true;
const HEJ::Config config = HEJ::load_config(argv[1]);
std::fstream wgt_file;
if ( OUTPUT_MODE ) {
std::cout << "_______________________USING OUTPUT MODE!_______________________" << std::endl;
wgt_file.open(argv[2], std::fstream::out);
wgt_file.precision(10);
} else {
wgt_file.open(argv[2], std::fstream::in);
}
auto reader{ HEJ::make_reader(argv[3])};
const auto component = guess_component(argv[2]);
HEJ::MatrixElement ME{
[](double){ return alpha_s; },
HEJ::to_MatrixElementConfig(config)
};
double max_ratio = 0.;
size_t idx_max_ratio = 0;
HEJ::Event ev_max_ratio(HEJ::Event::EventData{}.cluster(
config.resummation_jets.def,0
)
);
double av_ratio = 0;
size_t i = 0;
while(reader->read_event()){
++i;
HEJ::Event::EventData data{reader->hepeup()};
shuffle_particles(data);
HEJ::Event::EventData data_mirror{mirror_event(data)};
shuffle_particles(data_mirror);
HEJ::Event event{
data.cluster(
config.resummation_jets.def,
config.resummation_jets.min_pt
)
};
HEJ::Event event_mirror{
data_mirror.cluster(
config.resummation_jets.def,
config.resummation_jets.min_pt
)
};
const double our_ME = (component == MEComponent::tree)?
ME.tree(event).central:
ME.virtual_corrections(event).central
;
if(!std::isfinite(our_ME)){
std::cerr << "Found non-finite ME ("<< our_ME <<")\n" << event << std::endl;
return EXIT_FAILURE;
}
const double ME_mirror = (component == MEComponent::tree)?
ME.tree(event_mirror).central:
ME.virtual_corrections(event_mirror).central
;
if(!std::isfinite(ME_mirror)){
std::cerr << "Found non-finite ME ("<< ME_mirror <<")\n" << event_mirror << std::endl;
return EXIT_FAILURE;
}
if(std::abs(our_ME/ME_mirror-1.)>ep_mirror){
size_t precision(std::cout.precision());
std::cerr.precision(16);
std::cerr<< "z-Mirrored ME gives different result " << i << "\n"
<<our_ME << " vs " << ME_mirror << " => difference: "
<< std::abs(our_ME/ME_mirror-1.) << "\n" << event
<< "\nmirrored:\n" << event_mirror << std::endl;
std::cerr.precision(precision);
return EXIT_FAILURE;
}
if ( OUTPUT_MODE ) {
wgt_file << our_ME << std::endl;
} else {
std::string line;
if(!std::getline(wgt_file,line)) break;
const double ref_ME = std::stod(line);
const double diff = std::abs(our_ME/ref_ME-1.);
av_ratio+=diff;
if( diff > max_ratio ) {
max_ratio = diff;
idx_max_ratio = i;
ev_max_ratio = event;
}
if( diff > ep ){
size_t precision(std::cout.precision());
std::cerr.precision(16);
std::cerr<< "Large difference in PSP " << i << "\nis: "<<our_ME
<< " should: " << ref_ME << " => difference: " << diff << "\n"
<< event << std::endl;
std::cerr.precision(precision);
return EXIT_FAILURE;
}
}
}
wgt_file.close();
if ( i<100 )
throw std::invalid_argument{"Not enough PSP tested"};
if ( !OUTPUT_MODE ) {
size_t precision(std::cout.precision());
std::cout.precision(16);
std::cout << "Avg ratio after " << i << " PSP: " << av_ratio/i << std::endl;
std::cout << "maximal ratio at " << idx_max_ratio << ": " << max_ratio << std::endl;
std::cout.precision(precision);
}
return EXIT_SUCCESS;
}
diff --git a/t/test_classify.cc b/t/test_classify.cc
index 419beee..eddd9f8 100644
--- a/t/test_classify.cc
+++ b/t/test_classify.cc
@@ -1,855 +1,1128 @@
/**
* \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"};
+ const std::vector<std::string> all_quarks{"-4","-1","1","2","3","4"};
+ const std::vector<std::string> all_partons{"g","-2","-1","1","2","3","4"};
+ const std::vector<std::string> all_bosons{"h", "Wp", "Wm"};
+ const std::vector<std::string> all_gZ{"photon", "Z"};
+ const std::vector<std::string> all_w{"W+", "W-"};
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));
}
+ for(auto & decay: ev.decays){
+ std::shuffle(begin(decay.second), end(decay.second), ran);
+ }
}
}
// if pos_boson = -1 (or not implemented) -> no boson
// njet==7 is special: has less jets, i.e. multiple parton in one jet,
+ // all partons are massive (4 GeV) -> can be boson/decay
// 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 == 2){
+ 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({HEJ::ParticleID::higgs, { 198, 33, -170, 291}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-154, 68, 44, 174}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -44, -101, 88, 141}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -322, 322}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 284, 284}, {}};
+ 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({HEJ::ParticleID::gluon, { -6, 82, -159, 179}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 195, -106, 74, 265}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-189, 24, 108, 219}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -320, 320}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 343, 343}, {}};
+ 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({HEJ::ParticleID::gluon, { -80, -80, -140, 180}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -60, -32, 0, 68}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 140, 112, 177, 281}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -246, 246}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 283, 283}, {}};
+ 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({HEJ::ParticleID::gluon, { -72, 24, 18, 78}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 72, -24, 74, 106}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -46, 46}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 138, 138}, {}};
+ 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({HEJ::ParticleID::higgs, { 152, -117, -88, 245}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-146, 62, -11, 159}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 126, -72, 96, 174}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-132, 127, 144, 233}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -335, 335}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 476, 476}, {}};
+ 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({HEJ::ParticleID::gluon, {-191, 188, -128, 297}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 199, 72, -76, 257}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 184, -172, -8, 252}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-192, -88, 54, 218}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -591, 591}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 433, 433}, {}};
+ 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({HEJ::ParticleID::gluon, { -42, 18, -49, 67}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, -54, -28, 62}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 99, 32, -16, 163}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -45, 4, 72, 85}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -199, 199}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 178, 178}, {}};
+ 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({HEJ::ParticleID::gluon, { -65, -32, -76, 105}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -22, 31, -34, 51}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, -67, -36, 77}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 99, 68, -4, 173}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -278, 278}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 128, 128}, {}};
+ 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({HEJ::ParticleID::gluon, { -90, -135, 30, 165}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-108, 198, 76, 238}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 198, -63, 126, 243}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -207, 207}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 439, 439}, {}};
+ 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({HEJ::ParticleID::higgs, { 199, 72, -76, 257}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-200, -155, -64, 261}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 198, 194, 57, 283}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 1, 32, 8, 33}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-198, -143, 186, 307}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -515, 515}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 626, 626}, {}};
+ 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({HEJ::ParticleID::gluon, { 198, 61, -162, 263}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 199, 72, -76, 257}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-200, 135, 144, 281}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-198, -186, 171, 321}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 1, -82, 122, 147}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -535, 535}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 734, 734}, {}};
+ 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({HEJ::ParticleID::gluon, {-180, -27, -164, 245}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-108, 78, -36, 138}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 196, -189, 68, 307}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-107, 136, 76, 189}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 199, 2, 178, 267}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -512, 512}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 634, 634}, {}};
+ 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({HEJ::ParticleID::gluon, { -12, -30, -84, 90}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -72, 22, -96, 122}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 0, -51, 85}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 64, 72, -81, 177}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -64, 84, 116}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -409, 409}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 181, 181}, {}};
+ 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({HEJ::ParticleID::gluon, { -72, -49, -72, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, 0, -36, 60}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 54, -36, 66}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, -77, -56, 117}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 64, 72, -81, 177}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -407, 407}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 126, 126}, {}};
+ 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({HEJ::ParticleID::gluon, { 248, -56, -122, 282}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 249, 30, -10, 251}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-249, -18, 26, 251}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-248, 44, 199, 321}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -506, 506}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 599, 599}, {}};
+ 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({HEJ::ParticleID::higgs, { 349, 330, -94, 505}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-315, -300, 0, 435}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 347, 306, 18, 463}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-249, -342, 162, 453}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 345, 312, 284, 545}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-324, -126, 292, 454}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-153, -180, 304, 385}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -1137, 1137}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 2103, 2103}, {}};
+ 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({HEJ::ParticleID::gluon, { 242, 241, -182, 387}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 243, 238, -190, 409}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-218, -215, -74, 315}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-224, -224, 112, 336}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 241, 182, 154, 339}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -53, -234, 126, 271}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-231, 12, 156, 279}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -1117, 1117}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 1219, 1219}, {}};
+ 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({HEJ::ParticleID::gluon, { 151, 102, -42, 187}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -86, -46, -17, 99}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 152, 153, 0, 249}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -60, -135, 64, 161}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 150, 123, 110, 223}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-154, -49, 98, 189}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-153, -148, 144, 257}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -504, 504}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 861, 861}, {}};
+ 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({HEJ::ParticleID::gluon, { 198, 197, -66, 287}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-198, -189, -54, 279}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-200, -64, 2, 210}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 199, 158, 6, 283}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-199, -184, 172, 321}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 196, 168, 177, 313}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 4, -86, 92, 126}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -745, 745}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 1074, 1074}, {}};
+ 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({HEJ::ParticleID::gluon, { 151, 102, -42, 187}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -86, -133, -14, 159}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-154, -104, -8, 186}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -60, 11, 0, 61}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 152, 153, 0, 249}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 150, 125, 90, 215}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-153, -154, 126, 251}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -578, 578}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 730, 730}, {}};
+ 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({HEJ::ParticleID::gluon, { -15, -90, -94, 131}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, 82, -74, 111}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -80, -64, 105}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -25, -36, 65}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, -16, 101}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 68, 92, -18, 170}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -78, 54, 95}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -513, 513}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 265, 265}, {}};
+ 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({HEJ::ParticleID::gluon, { 198, 197, -66, 287}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 4, -84, -18, 86}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-198, -60, -36, 210}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 196, -78, -36, 214}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-200, 45, 0, 205}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-199, -178, 2, 267}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::higgs, { 199, 158, 6, 283}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -850, 850}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 702, 702}, {}};
+ 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({HEJ::ParticleID::gluon, {-350, -112, -280, 462}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 347, 266, -322, 543}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-349, -314, -38, 471}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 349, 348, 12, 493}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, {-342, -54, 23, 347}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 345, -134, 138, 395}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -1589, 1589}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 1122, 1122}, {}};
+ 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({HEJ::ParticleID::gluon, { -11, -18, -42, 47}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, 26, -18, 35}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, -24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -54, -6, 59}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -44, 8, 45}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -96, 44, 116}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, 88, 133}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -249, 249}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 299, 299}, {}};
+ ev.outgoing.push_back({gluon, { -15, -18, -54, 59}, {}});
+ ev.outgoing.push_back({gluon, { -11, 98, -70, 121}, {}});
+ ev.outgoing.push_back({gluon, { 23, -100, -64, 121}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, -20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -5, -92, -12, 93}, {}});
+ ev.outgoing.push_back({gluon, { -48, -76, -2, 90}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -439, 439}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 273, 273}, {}};
return ev;
case -2: // jet idx: 0 1 2 3 4 -1 -1
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -80, -64, 105}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -84, -12, 85}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, 24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, 88, 133}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -24, 62, 82}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, -18, 42, 47}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, 20, 60, 65}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -215, 215}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 415, 415}, {}};
+ ev.outgoing.push_back({gluon, { -5, -86, -82, 119}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -48, -14, 20, 54}, {}});
+ ev.outgoing.push_back({gluon, { 23, -50, 26, 61}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -15, -18, 54, 59}, {}});
+ ev.outgoing.push_back({gluon, { -11, -20, 88, 91}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -215, 215}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 397, 397}, {}};
return ev;
case -3: // jet idx: 0 0 1 2 3 4 5
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -86, -70, 111}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, -52, -36, 65}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, -44, 109}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -60, 5, 77}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, 92, 8, 93}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, 24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -80, 64, 105}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -361, 361}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 312, 312}, {}};
+ ev.outgoing.push_back({gluon, { -11, 98, -70, 121}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, -56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -15, -58, -34, 69}, {}});
+ ev.outgoing.push_back({gluon, { 23, -76, -40, 89}, {}});
+ ev.outgoing.push_back({gluon, { -5, -52, 8, 53}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -48, -100, 82, 138}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -394, 394}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 304, 304}, {}};
return ev;
case -4: // jet idx: 0 1 2 3 4 5 5
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -40, -56, 69}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, -88, 133}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -84, -72, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, 92, 8, 93}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, 24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, -58, 30, 67}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -96, 96, 144}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -395, 395}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 337, 337}, {}};
+ ev.outgoing.push_back({gluon, { 23, -52, -76, 95}, {}});
+ ev.outgoing.push_back({gluon, { -15, -98, -62, 117}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, -20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -48, -44, -10, 66}, {}});
+ ev.outgoing.push_back({gluon, { -5, -92, -12, 93}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -11, 98, 70, 121}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -387, 387}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 333, 333}, {}};
return ev;
case -5: // jet idx: 0 1 -1 -1 2 3 4
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -64, -80, 105}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, -16, 101}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, 20, 0, 25}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, -10, 2, 15}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, 24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -72, 54, 102}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -60, 48, 77}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -253, 253}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 285, 285}, {}};
+ ev.outgoing.push_back({gluon, { -15, -26, -62, 69}, {}});
+ ev.outgoing.push_back({gluon, { -48, -60, -54, 94}, {}});
+ ev.outgoing.push_back({gluon, { 23, 10, -14, 29}, {}});
+ ev.outgoing.push_back({gluon, { -5, -20, 0, 21}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -11, -92, 40, 101}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -278, 278}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 264, 264}, {}};
return ev;
case -6: // jet idx: 0 0 0 1 2 2 3
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -60, -48, 77}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, -52, -36, 65}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -96, -58, 122}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, -24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, -16, 101}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, 92, 8, 93}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -70, 14, 75}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -403, 403}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 243, 243}, {}};
+ ev.outgoing.push_back({gluon, { -15, -62, -26, 69}, {}});
+ ev.outgoing.push_back({gluon, { -48, -88, -31, 105}, {}});
+ ev.outgoing.push_back({gluon, { -5, -38, -6, 39}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -11, 98, 70, 121}, {}});
+ ev.outgoing.push_back({gluon, { 23, -98, 74, 125}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -265, 265}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 422, 422}, {}};
return ev;
case -7: // jet idx: 0 1 1 2 2 3 4
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -46, -46, 69}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, -90, -70, 115}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -78, -54, 95}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, 88, -28, 93}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, -16, 101}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -60, 5, 77}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, 24, 113}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -424, 424}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 239, 239}, {}};
+ ev.outgoing.push_back({gluon, { 23, -70, -66, 99}, {}});
+ ev.outgoing.push_back({gluon, { -11, 98, -70, 121}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, -56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -5, -38, -14, 41}, {}});
+ ev.outgoing.push_back({gluon, { -48, -100, -37, 117}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, -20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -15, -78, 30, 85}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -462, 462}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 229, 229}, {}};
return ev;
case -8: // jet idx: 0 1 2 2 2 3 4
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 23, -84, -84, 121}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, 92, -8, 93}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, -36, 0, 39}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -5, -62, 10, 63}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -48, -96, 19, 109}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 87, 24, 113}, {}});
- ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 99, 88, 133}, {}});
- ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -311, 311}, {}};
- ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 360, 360}, {}};
+ ev.outgoing.push_back({gluon, { -48, -40, -56, 84}, {}});
+ ev.outgoing.push_back({gluon, { -11, 92, -68, 115}, {}});
+ ev.outgoing.push_back({gluon, { 23, -94, -62, 115}, {}});
+ ev.outgoing.push_back({gluon, { -15, -98, -62, 117}, {}});
+ ev.outgoing.push_back({gluon, { -5, -48, -16, 51}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -449, 449}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 261, 261}, {}};
+ return ev;
+ case -9: // jet idx: 0 1 2 1 3 0 4
+ ev.outgoing.push_back({gluon, { -15, -96, -72, 121}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, -56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -48, -72, -39, 95}, {}});
+ ev.outgoing.push_back({gluon, { -11, 92, -40, 101}, {}});
+ ev.outgoing.push_back({gluon, { 23, -20, -12, 33}, {}});
+ ev.outgoing.push_back({gluon, { -5, -92, -36, 99}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, -20, 117}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -476, 476}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 201, 201}, {}};
+ return ev;
+ case -10: // jet idx: 0 1 3 2 4 3 1
+ ev.outgoing.push_back({gluon, { 68, 93, -20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -5, -48, 16, 51}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.outgoing.push_back({gluon, { 23, -76, 52, 95}, {}});
+ ev.outgoing.push_back({gluon, { -48, -60, 54, 94}, {}});
+ ev.outgoing.push_back({gluon, { -11, 92, 68, 115}, {}});
+ ev.outgoing.push_back({gluon, { -15, -96, 72, 121}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -203, 203}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 501, 501}, {}};
+ return ev;
+ case -11: // jet idx: 0 1 2 3 3 4 2
+ ev.outgoing.push_back({gluon, { -15, -98, -62, 117}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, 56, 111}, {}});
+ ev.outgoing.push_back({gluon, { -5, -28, 20, 35}, {}});
+ ev.outgoing.push_back({gluon, { -48, -96, 75, 131}, {}});
+ ev.outgoing.push_back({gluon, { 23, -62, 50, 83}, {}});
+ ev.outgoing.push_back({gluon, { -11, 96, 76, 123}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -241, 241}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 476, 476}, {}};
+ return ev;
+ case -12: // jet idx: 0 1 0 2 3 4 5
+ ev.outgoing.push_back({gluon, { -5, -72, -92, 117}, {}});
+ ev.outgoing.push_back({gluon, { -48, -44, -62, 90}, {}});
+ ev.outgoing.push_back({gluon, { -15, -100, -80, 129}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, -56, 111}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, 20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -11, 98, 70, 121}, {}});
+ ev.outgoing.push_back({gluon, { 23, -70, 66, 99}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -459, 459}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 325, 325}, {}};
+ return ev;
+ case -13: // jet idx: 0 1 2 0 1 3 0
+ ev.outgoing.push_back({gluon, { -15, -98, -62, 117}, {}});
+ ev.outgoing.push_back({gluon, { -12, 95, -56, 111}, {}});
+ ev.outgoing.push_back({gluon, { 23, -40, -16, 49}, {}});
+ ev.outgoing.push_back({gluon, { -48, -100, -37, 117}, {}});
+ ev.outgoing.push_back({gluon, { -11, 88, -20, 91}, {}});
+ ev.outgoing.push_back({gluon, { 68, 93, -20, 117}, {}});
+ ev.outgoing.push_back({gluon, { -5, -38, -6, 39}, {}});
+ ev.incoming[0] = {gluon, { 0, 0, -429, 429}, {}};
+ ev.incoming[1] = {gluon, { 0, 0, 212, 212}, {}};
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;
}
+ std::vector<HEJ::Particle> decay_W( HEJ::Particle const & parent ){
+ if(parent.m() == 0.) // we can't decay massless partons
+ return {};
+ std::array<HEJ::ParticleID, 2> decays;
+ if(parent.type==HEJ::ParticleID::Wp){
+ decays[0] = HEJ::ParticleID::e_bar;
+ decays[1] = HEJ::ParticleID::nu_e;
+ } else {
+ decays[0] = HEJ::ParticleID::e;
+ decays[1] = HEJ::ParticleID::nu_e_bar;
+ }
+ 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;
+ }
+
// 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;
+ if( (overwrite_boson == 0) && 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]);
+ // decay W
+ if( std::abs(ev.outgoing[i].type) == HEJ::ParticleID::Wp )
+ ev.decays[i]=decay_W(ev.outgoing[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(){
+ //! test FKL configurations
+ //! if implemented==false : check processes that are not in HEJ yet
+ bool check_fkl( bool const implemented=true ){
using namespace HEJ;
+ auto const type{ implemented?event_type::FKL:event_type::non_resummable };
+ std::vector<std::string> bosons;
+ if(implemented)
+ bosons = all_bosons;
+ else {
+ bosons = all_gZ;
+ }
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))
+ if(implemented && !match_expectation(type, base_in, base_out))
return false;
- for(auto const & boson: all_bosons) // any boson
+ for(auto const & boson: 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))
+ if(!match_expectation(type, in, out))
return false;
}
}
- for(int i=-1; i>-9;--i){ // jet setup doesn't matter for FKL
- 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))
+ if(implemented){
+ 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(type, base_in, base_out, i))
+ return false;
+ }
+ if(! match_expectation(type,{first,last},{"h",first,"g","g","g","g",last}, -13)
+ && match_expectation(type,{first,last},{first,"g","g","g","g",last,"h"}, -13)
+ && match_expectation(type,{"2",last}, {"1","g","g","g","g",last,"Wp"}, -13)
+ && match_expectation(type,{first,"1"}, {"Wp",first,"g","g","g","g","2"}, -13)
+ )
return false;
}
}
return true;
}
- bool check_uno(){
+ //! test unordered configurations
+ //! if implemented==false : check processes that are not in HEJ yet
+ bool check_uno( bool const implemented=true ){
using namespace HEJ;
- auto const b{ event_type::unob };
- auto const f{ event_type::unof };
+ auto const b{ implemented?event_type::unob:event_type::non_resummable };
+ auto const f{ implemented?event_type::unof:event_type::non_resummable };
+ std::vector<std::string> bosons;
+ if(implemented)
+ bosons = all_bosons;
+ else {
+ bosons = all_gZ;
+ }
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) )
+ if( implemented
+ && !match_expectation(expectation, base_in, base_out) )
return false;
- for(auto const & boson: all_bosons){ // any boson
+ for(auto const & boson: 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"}, -1)
- && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -2)
- && 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)
+ if( implemented && !(
+ match_expectation(f,{fkl,uno},{"h",fkl,"g","g","g",uno,"g"}, -1)
+ && match_expectation(b,{uno,"2"},{"Wp","g",uno,"g","g","g","1"}, -1)
+ && match_expectation(b,{"1",fkl},{"Wm","g","2","g","g","g",fkl}, -1)
+ && 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)
+ && match_expectation(f,{fkl,uno},{"h",fkl,"g","g","g",uno,"g"}, -13)
+ && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g",fkl,"h"}, -13)
+ && match_expectation(f,{"2",uno},{"1","g","g","g",uno,"g","Wp"}, -13)
+ && match_expectation(f,{fkl,"1"},{"Wm",fkl,"g","g","g","2","g"}, -13)
+ && match_expectation(b,{uno,"1"},{"Wm","g",uno,"g","g","g","2"}, -13)
))
return false;
}
return true;
}
- bool check_extremal_qqx(){
+ //! test extremal qqx configurations
+ //! if implemented==false : check processes that are not in HEJ yet
+ bool check_extremal_qqx( bool const implemented=true ){
using namespace HEJ;
- auto const b{ event_type::qqxexb };
- auto const f{ event_type::qqxexf };
+ auto const b{ implemented?event_type::qqxexb:event_type::non_resummable };
+ auto const f{ implemented?event_type::qqxexf:event_type::non_resummable };
+ std::vector<std::string> bosons;
+ if(implemented)
+ bosons = all_w;
+ else {
+ bosons = all_gZ;
+ bosons.push_back("h");
+ }
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) )
+ if( !implemented
+ && !match_expectation(expectation, base_in, base_out) )
return false;
- for(auto const & boson: all_bosons){ // any boson
+ 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}, -1)
- && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -2)
- && 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)
- ))
- return false;
+ if( !implemented){
+ 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;
+ } else if (fkl == "2") {
+ if( !( match_expectation(f,{"2","g"},{"1","Wp","g","g","g",qqx,qqx2}, -3)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"g","Wp","g","g","1"}, -4)
+ && match_expectation(f,{"2","g"},{"1","Wp","g","g","g",qqx,qqx2}, -5)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"g","Wp","g","g","1"}, -5)
+ && match_expectation(f,{"2","g"},{"1","g","Wp","g","g",qqx,qqx2}, -6)
+ && match_expectation(f,{"2","g"},{"1","g","g","g","Wp",qqx,qqx2}, -7)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"g","g","g","Wp","1"}, -7)
+ && match_expectation(f,{"2","g"},{"1","Wp","g","g","g",qqx,qqx2}, -8)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"Wp","g","g","g","1"}, -8)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"g","Wp","g","g","1"}, -9)
+ && match_expectation(f,{"2","g"},{"1","g","g","g","Wp",qqx,qqx2}, -10)
+ && match_expectation(f,{"2","g"},{"1","g","g","g","Wp",qqx,qqx2}, -11)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"g","g","g","Wp","1"}, -11)
+ && match_expectation(f,{"2","g"},{"1","g","g","g","Wp",qqx,qqx2}, -12)
+ && match_expectation(b,{"g","2"},{qqx,qqx2,"g","Wp","g","g","1"}, -12)
+ ))
+ return false;
+
+ }
}
return true;
}
- bool check_central_qqx(){
+ //! test central qqx configurations
+ //! if implemented==false : check processes that are not in HEJ yet
+ bool check_central_qqx(bool const implemented=true){
using namespace HEJ;
- auto const t{ event_type::qqxmid };
+ auto const t{ implemented?event_type::qqxmid:event_type::non_resummable };
+ std::vector<std::string> bosons;
+ if(implemented)
+ bosons = all_w;
+ else {
+ bosons = all_gZ;
+ bosons.push_back("h");
+ }
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) )
+ if( !implemented && !match_expectation(t, base_in, base_out) )
return false;
- for(auto const & boson: all_bosons) // any boson
+ 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,qqx,qqx2,"g","g","g",fkl2}, -1)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -2)
- && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -3)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -3)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -4)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -4)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -5)
- && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -6)
- && 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)
- ))
- return false;
+ if( !implemented ){
+ 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;
+ } else if (fkl1 == "1") {
+ if( !( match_expectation(t,{"1",fkl2},{"2","Wm",qqx,qqx2,"g","g",fkl2}, -3)
+ && match_expectation(t,{"1",fkl2},{"2","g","Wm",qqx,qqx2,"g",fkl2}, -3)
+ && match_expectation(t,{"1",fkl2},{"2","g","g",qqx,qqx2,"Wm",fkl2}, -4)
+ && match_expectation(t,{"1",fkl2},{"2",qqx,qqx2,"g","Wm","g",fkl2}, -4)
+ && match_expectation(t,{"1",fkl2},{"2","g","g","Wm",qqx,qqx2,fkl2}, -5)
+ && match_expectation(t,{"1",fkl2},{"2","g","Wm",qqx,qqx2,"g",fkl2}, -6)
+ && match_expectation(t,{"1",fkl2},{"2","Wm",qqx,qqx2,"g","g",fkl2}, -7)
+ && match_expectation(t,{"1",fkl2},{"2","g","Wm","g",qqx,qqx2,fkl2}, -7)
+ && match_expectation(t,{"1",fkl2},{"2",qqx,qqx2,"Wm","g","g",fkl2}, -8)
+ && match_expectation(t,{"1",fkl2},{"2","g","g","Wm",qqx,qqx2,fkl2}, -8)
+ && match_expectation(t,{"1",fkl2},{"2",qqx,qqx2,"g","Wm","g",fkl2}, -9)
+ && match_expectation(t,{"1",fkl2},{"2","g",qqx,qqx2,"g","Wm",fkl2}, -9)
+ && match_expectation(t,{"1",fkl2},{"2","g","g",qqx,qqx2,"Wm",fkl2}, -10)
+ && match_expectation(t,{"1",fkl2},{"2","g","g","Wm",qqx,qqx2,fkl2}, -10)
+ && match_expectation(t,{"1",fkl2},{"2","g","Wm","g",qqx,qqx2,fkl2}, -11)
+ && match_expectation(t,{"1",fkl2},{"2","Wm","g",qqx,qqx2,"g",fkl2}, -12)
+ && match_expectation(t,{"1",fkl2},{"2","g","Wm","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
- //! @FIXME they are currently allowed
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"})
+ && match_expectation(type, {"3","-2"}, {"Wp","3","Wm","g","g","g","-2"}, -13)
+ ;
+ }
+
+ // 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"})
;
}
+
+ // not implemented processes
+ bool check_not_implemented(){
+ return check_fkl(false)
+ && check_uno(false)
+ && check_extremal_qqx(false)
+ && check_central_qqx(false);
+ }
}
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;
- //! @TODO missing:
- //! checks for partons sharing a jet
+ if(!check_not_2_jets()) return EXIT_FAILURE;
+ if(!check_not_implemented()) return EXIT_FAILURE;
return EXIT_SUCCESS;
}
diff --git a/t/test_classify_ref.cc b/t/test_classify_ref.cc
index 7a8edb4..96aab58 100644
--- a/t/test_classify_ref.cc
+++ b/t/test_classify_ref.cc
@@ -1,95 +1,105 @@
/**
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include <fstream>
#include <random>
#include <algorithm>
#include "LHEF/LHEF.h"
#include "HEJ/YAMLreader.hh"
#include "HEJ/event_types.hh"
#include "HEJ/Event.hh"
#include "HEJ/EventReader.hh"
namespace{
// this is deliberately chosen bigger than in the generation,
// to cluster multiple partons in one jet
constexpr double min_jet_pt = 40.;
- const fastjet::JetDefinition jet_def{fastjet::kt_algorithm, 0.4};
+ const fastjet::JetDefinition jet_def{fastjet::kt_algorithm, 0.6};
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));
}
+ for(auto & decay: ev.decays){
+ std::shuffle(begin(decay.second), end(decay.second), ran);
+ }
}
}
}
int main(int argn, char** argv) {
if(argn != 3 && argn != 4){
std::cerr << "Usage: " << argv[0]
<< " reference_classification input_file.lhe\n";
return EXIT_FAILURE;
}
bool OUTPUT_MODE = false;
if(argn == 4 && std::string("OUTPUT")==std::string(argv[3]))
OUTPUT_MODE = true;
std::fstream ref_file;
if ( OUTPUT_MODE ) {
std::cout << "_______________________USING OUTPUT MODE!_______________________" << std::endl;
ref_file.open(argv[1], std::fstream::out);
} else {
ref_file.open(argv[1], std::fstream::in);
}
auto reader{ HEJ::make_reader(argv[2]) };
+ size_t nevent{0};
while(reader->read_event()){
+ ++nevent;
+ // We don't need to test forever, the first "few" are enough
+ if(nevent>4000) break;
HEJ::Event::EventData data{ reader->hepeup() };
shuffle_particles(data);
const HEJ::Event ev{
data.cluster(
jet_def, min_jet_pt
)
};
if ( OUTPUT_MODE ) {
ref_file << ev.type() << std::endl;
} else {
std::string line;
if(!std::getline(ref_file,line)) break;
const auto expected{static_cast<HEJ::event_type::EventType>(std::stoi(line))};
if(ev.type() != expected){
using HEJ::event_type::name;
- std::cerr << "wrong classification of event:\n" << ev
+ std::cerr << "wrong classification of event " << nevent << ":\n" << ev
<< "classified as " << name(ev.type())
- << ", is " << name(expected) << '\n';
+ << ", expected " << name(expected) << "\nJet indices: ";
+ for(auto const & idx: ev.particle_jet_indices(ev.jets()))
+ std::cerr << idx << " ";
+ std::cerr << "\n";
return EXIT_FAILURE;
}
}
}
return EXIT_SUCCESS;
}
diff --git a/t/test_colours.cc b/t/test_colours.cc
index a7b96c4..8aa4031 100644
--- a/t/test_colours.cc
+++ b/t/test_colours.cc
@@ -1,368 +1,405 @@
/**
* \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));
}
+ for(auto & decay: ev.decays){
+ std::shuffle(begin(decay.second), end(decay.second), ran);
+ }
+ }
+}
+
+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;
}
diff --git a/t/test_decay.cc b/t/test_decay.cc
new file mode 100644
index 0000000..a7be172
--- /dev/null
+++ b/t/test_decay.cc
@@ -0,0 +1,193 @@
+/**
+ * \authors The HEJ collaboration (see AUTHORS for details)
+ * \date 2019
+ * \copyright GPLv2 or later
+ *
+ * \brief Test classification for (invalid) W decays
+ */
+#include <random>
+
+#include "HEJ/Event.hh"
+
+namespace {
+ const fastjet::JetDefinition jet_def{fastjet::JetAlgorithm::antikt_algorithm, 0.4};
+ const double min_jet_pt{30.};
+
+ 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));
+ }
+ for(auto & decay: ev.decays){
+ std::shuffle(begin(decay.second), end(decay.second), ran);
+ }
+ }
+ }
+
+ HEJ::Event::EventData new_event() {
+ HEJ::Event::EventData ev;
+ ev.outgoing.push_back({HEJ::ParticleID::gluon, { -11, -96, -76, 123}, {}});
+ ev.outgoing.push_back({HEJ::ParticleID::gluon, { -15, -70, -22, 75}, {}});
+ ev.outgoing.push_back({HEJ::ParticleID::gluon, { 68, 93, -20, 117}, {}});
+ ev.outgoing.push_back({HEJ::ParticleID::gluon, { -12, 95, 56, 111}, {}});
+ ev.outgoing.push_back({HEJ::ParticleID::gluon, { -30, -22, 25, 45}, {}});
+ ev.incoming[0] = {HEJ::ParticleID::gluon, { 0, 0, -254, 254}, {}};
+ ev.incoming[1] = {HEJ::ParticleID::gluon, { 0, 0, 217, 217}, {}};
+ return ev;
+ }
+
+ std::vector<HEJ::Particle> decay_W( HEJ::Particle const & parent ){
+ if(parent.m() == 0.) // we can't decay massless partons
+ return {};
+ std::array<HEJ::ParticleID, 2> decays;
+ if(parent.type==HEJ::ParticleID::Wp){
+ decays[0] = HEJ::ParticleID::nu_e;
+ decays[1] = HEJ::ParticleID::e_bar;
+ } else {
+ decays[0] = HEJ::ParticleID::e;
+ decays[1] = HEJ::ParticleID::nu_e_bar;
+ }
+ 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;
+ }
+
+ bool test_event(HEJ::Event::EventData data, bool const valid
+ ){
+ using namespace HEJ::event_type;
+ EventType const expected{ valid?FKL:bad_final_state };
+ shuffle_particles(data);
+ auto const ev = std::move(data).cluster(jet_def, min_jet_pt);
+ if(ev.type() != expected){
+ std::cerr << "Event does not match expectation, expected "
+ << name(expected) << "\n" << ev << std::endl;
+ return false;
+ }
+ return true;
+ }
+} // namespace anonymous
+
+int main() {
+ using namespace HEJ::pid;
+ auto ev = new_event();
+ // basic FKL
+ test_event(ev, true);
+ // W position shouldn't matter
+ for(auto const W_type: {Wp, Wm}){
+ for(size_t w_pos = 1; w_pos<ev.outgoing.size()-1; ++w_pos){
+ ev = new_event();
+ ev.outgoing[w_pos].type = W_type;
+ ev.outgoing.back().type = (W_type==Wp)?d:u;
+ ev.incoming.back().type = (W_type==Wp)?u:d;
+
+ // no decay
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+
+ // working decay
+ ev.decays[w_pos] = decay_W(ev.outgoing[w_pos]);
+ if(!test_event(ev, true))
+ return EXIT_FAILURE;
+
+ // swapped W+ <-> W-
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ -ev.decays[w_pos].at(0).type );
+ ev.decays[w_pos].at(1).type = static_cast<ParticleID>(
+ -ev.decays[w_pos].at(1).type );
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ -ev.decays[w_pos].at(0).type );
+ ev.decays[w_pos].at(1).type = static_cast<ParticleID>(
+ -ev.decays[w_pos].at(1).type );
+
+ // replace e -> mu (normal)
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(0).type+2 );
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(0).type-2 );
+
+ // replace e -> mu (anti)
+ ev.decays[w_pos].at(1).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(1).type-2 );
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+
+ // all mu
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(0).type+2 );
+ if(!test_event(ev, true))
+ return EXIT_FAILURE;
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(0).type-2 );
+ ev.decays[w_pos].at(1).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(1).type+2 );
+
+ // partonic
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(0).type-10 );
+ ev.decays[w_pos].at(1).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(1).type+10 );
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+ ev.decays[w_pos].at(0).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(0).type+10 );
+ ev.decays[w_pos].at(1).type = static_cast<ParticleID>(
+ ev.decays[w_pos].at(1).type-10 );
+
+ // double check that we undid all changes
+ if(!test_event(ev, true))
+ return EXIT_FAILURE;
+
+ // 1->3 decay
+ ev.decays[w_pos].emplace_back(
+ HEJ::Particle{photon, fastjet::PseudoJet(0,0,0,0), {}}
+ );
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+ ev.decays[w_pos].pop_back();
+
+ // second decay
+ ev.decays[0] = decay_W(ev.outgoing[0]);
+ ev.decays[0].at(0).type = ev.outgoing[0].type;
+ ev.decays[0].at(1).type = gluon;
+ if(!test_event(ev, false))
+ return EXIT_FAILURE;
+ }
+ }
+
+ return EXIT_SUCCESS;
+}
diff --git a/t/test_scale_arithmetics.cc b/t/test_scale_arithmetics.cc
index 933971e..49f8a09 100644
--- a/t/test_scale_arithmetics.cc
+++ b/t/test_scale_arithmetics.cc
@@ -1,120 +1,123 @@
/**
* \authors The HEJ collaboration (see AUTHORS for details)
* \date 2019
* \copyright GPLv2 or later
*/
#include <fstream>
#include <random>
#include <algorithm>
#include "LHEF/LHEF.h"
#include "HEJ/EventReweighter.hh"
#include "HEJ/make_RNG.hh"
#include "HEJ/Event.hh"
#include "HEJ/YAMLreader.hh"
#include "HEJ/stream.hh"
constexpr double alpha_s = 0.118;
constexpr double ep = 1e-13;
void dump(HEJ::Event const & ev){
{
LHEF::Writer writer{std::cout};
std::cout << std::setprecision(6);
writer.hepeup = to_HEPEUP(std::move(ev), nullptr);
writer.writeEvent();
}
std::cout << "Rapidity ordering:\n";
for(const auto & part: ev.outgoing()){
std::cout << std::setw(2) << part.type << ": "<< std::setw(7) << part.rapidity() << std::endl;
}
}
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));
}
+ for(auto & decay: ev.decays){
+ std::shuffle(begin(decay.second), end(decay.second), ran);
+ }
}
}
int main(int argn, char** argv){
if(argn != 3){
std::cerr << "\n# Usage:\n."<< argv[0] <<" config.yml input_file.lhe\n\n";
return EXIT_FAILURE;
}
HEJ::Config config = HEJ::load_config(argv[1]);
config.scales = HEJ::to_ScaleConfig(
YAML::Load("scales: [H_T, 1 * H_T, 2/2 * H_T, 2*H_T/2, H_T/2*2, H_T/2/2*4, H_T*H_T/H_T]")
);
HEJ::istream in{argv[2]};
LHEF::Reader reader{in};
auto ran = HEJ::make_RNG(config.rng.name, config.rng.seed);
HEJ::ScaleGenerator scale_gen{
config.scales.base,
config.scales.factors,
config.scales.max_ratio
};
HEJ::EventReweighter resum{
reader.heprup,
std::move(scale_gen),
to_EventReweighterConfig(config),
*ran
};
size_t i = 0;
while(reader.readEvent()){
++i;
HEJ::Event::EventData data{reader.hepeup};
shuffle_particles(data);
HEJ::Event event{
data.cluster(
config.resummation_jets.def,
config.resummation_jets.min_pt
)
};
auto resummed = resum.reweight(event, config.trials);
for(auto && ev: resummed) {
for(auto &&var: ev.variations()) {
if(std::abs(var.muf - ev.central().muf) > ep) {
std::cerr
<< std::setprecision(15)
<< "unequal scales: " << var.muf
<< " != " << ev.central().muf << '\n'
<< "in resummed event:\n";
dump(ev);
std::cerr << "\noriginal event:\n";
dump(event);
return EXIT_FAILURE;
}
}
}
}
return EXIT_SUCCESS;
}