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//
// HLTFilter selecting events with a minimum number of tri-object candidates passing invariant-mass cuts
//
#include "DataFormats/Candidate/interface/Particle.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/Common/interface/Ref.h"
#include "DataFormats/RecoCandidate/interface/RecoChargedCandidate.h"
#include "DataFormats/RecoCandidate/interface/RecoEcalCandidate.h"
#include "DataFormats/Math/interface/deltaR.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Utilities/interface/Exception.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "HLTrigger/HLTcore/interface/HLTFilter.h"
#include <string>
#include <vector>
template <typename T1, typename T2, typename T3>
class HLTTripletMass : public HLTFilter {
typedef edm::Ref<std::vector<T1>> T1Ref;
typedef edm::Ref<std::vector<T2>> T2Ref;
typedef edm::Ref<std::vector<T3>> T3Ref;
public:
explicit HLTTripletMass(const edm::ParameterSet&);
~HLTTripletMass() override = default;
static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
bool hltFilter(edm::Event&,
const edm::EventSetup&,
trigger::TriggerFilterObjectWithRefs& filterproduct) const override;
bool getCollections(edm::Event& iEvent,
std::vector<T1Ref>& coll1,
std::vector<T2Ref>& coll2,
std::vector<T3Ref>& coll3,
trigger::TriggerFilterObjectWithRefs& filterproduct) const;
private:
// configuration
const std::vector<edm::InputTag> originTag1_; // input tag identifying originals 1st product
const std::vector<edm::InputTag> originTag2_; // input tag identifying originals 2nd product
const std::vector<edm::InputTag> originTag3_; // input tag identifying originals 3rd product
const edm::EDGetTokenT<trigger::TriggerFilterObjectWithRefs> inputToken1_;
const edm::EDGetTokenT<trigger::TriggerFilterObjectWithRefs> inputToken2_;
const edm::EDGetTokenT<trigger::TriggerFilterObjectWithRefs> inputToken3_;
const int triggerType1_;
const int triggerType2_;
const int triggerType3_;
const std::vector<double> min_InvMass_; // minimum invariant mass of pair
const std::vector<double> max_InvMass_; // maximum invariant mass of pair
const double max_DR_; // maximum deltaR between the p4 of 3rd product and p4 of (1+2) product
const double max_DR2_; // maximum deltaR^2 between the p4 of 3rd product and p4 of (1+2) product
const int min_N_;
const bool is1and2Same_;
const bool is2and3Same_;
};
template <typename T1, typename T2, typename T3>
HLTTripletMass<T1, T2, T3>::HLTTripletMass(const edm::ParameterSet& iConfig)
: HLTFilter(iConfig),
originTag1_(iConfig.getParameter<std::vector<edm::InputTag>>("originTag1")),
originTag2_(iConfig.getParameter<std::vector<edm::InputTag>>("originTag2")),
originTag3_(iConfig.getParameter<std::vector<edm::InputTag>>("originTag3")),
inputToken1_(consumes(iConfig.getParameter<edm::InputTag>("inputTag1"))),
inputToken2_(consumes(iConfig.getParameter<edm::InputTag>("inputTag2"))),
inputToken3_(consumes(iConfig.getParameter<edm::InputTag>("inputTag3"))),
triggerType1_(iConfig.getParameter<int>("triggerType1")),
triggerType2_(iConfig.getParameter<int>("triggerType2")),
triggerType3_(iConfig.getParameter<int>("triggerType3")),
min_InvMass_(iConfig.getParameter<vector<double>>("MinInvMass")),
max_InvMass_(iConfig.getParameter<vector<double>>("MaxInvMass")),
max_DR_(iConfig.getParameter<double>("MaxDR")),
max_DR2_(max_DR_ * max_DR_),
min_N_(iConfig.getParameter<int>("MinN")),
is1and2Same_(iConfig.getParameter<bool>("is1and2Same")),
is2and3Same_(iConfig.getParameter<bool>("is2and3Same")) {
if (min_InvMass_.size() != max_InvMass_.size()) {
throw cms::Exception("Configuration") << "size of \"MinInvMass\" (" << min_InvMass_.size()
<< ") and \"MaxInvMass\" (" << max_InvMass_.size() << ") differ";
}
if (max_DR_ < 0) {
throw cms::Exception("Configuration") << "invalid value for parameter \"MaxDR\" (must be >= 0): " << max_DR_;
}
}
template <typename T1, typename T2, typename T3>
void HLTTripletMass<T1, T2, T3>::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;
makeHLTFilterDescription(desc);
desc.add<std::vector<edm::InputTag>>("originTag1", {edm::InputTag("hltOriginal1")});
desc.add<std::vector<edm::InputTag>>("originTag2", {edm::InputTag("hltOriginal2")});
desc.add<std::vector<edm::InputTag>>("originTag3", {edm::InputTag("hltOriginal3")});
desc.add<edm::InputTag>("inputTag1", edm::InputTag("hltFiltered1"));
desc.add<edm::InputTag>("inputTag2", edm::InputTag("hltFiltered2"));
desc.add<edm::InputTag>("inputTag3", edm::InputTag("hltFiltered3"));
desc.add<int>("triggerType1", 0);
desc.add<int>("triggerType2", 0);
desc.add<int>("triggerType3", 0);
desc.add<vector<double>>("MinInvMass", {0});
desc.add<vector<double>>("MaxInvMass", {1e12});
desc.add<double>("MaxDR", 1e4);
desc.add<int>("MinN", 0);
desc.add<bool>("is1and2Same", false);
desc.add<bool>("is2and3Same", false);
descriptions.addWithDefaultLabel(desc);
}
template <typename T1, typename T2, typename T3>
bool HLTTripletMass<T1, T2, T3>::getCollections(edm::Event& iEvent,
std::vector<T1Ref>& coll1,
std::vector<T2Ref>& coll2,
std::vector<T3Ref>& coll3,
trigger::TriggerFilterObjectWithRefs& filterproduct) const {
edm::Handle<trigger::TriggerFilterObjectWithRefs> handle1, handle2, handle3;
if (iEvent.getByToken(inputToken1_, handle1) and iEvent.getByToken(inputToken2_, handle2) and
iEvent.getByToken(inputToken3_, handle3)) {
// get hold of pre-filtered object collections
handle1->getObjects(triggerType1_, coll1);
handle2->getObjects(triggerType2_, coll2);
handle3->getObjects(triggerType3_, coll3);
const trigger::size_type n1(coll1.size());
const trigger::size_type n2(coll2.size());
const trigger::size_type n3(coll3.size());
if (saveTags()) {
edm::InputTag tagOld;
for (unsigned int i = 0; i < originTag1_.size(); ++i) {
filterproduct.addCollectionTag(originTag1_[i]);
}
tagOld = edm::InputTag();
for (trigger::size_type i1 = 0; i1 != n1; ++i1) {
const edm::ProductID pid(coll1[i1].id());
const auto& prov = iEvent.getStableProvenance(pid);
const std::string& label(prov.moduleLabel());
const std::string& instance(prov.productInstanceName());
const std::string& process(prov.processName());
edm::InputTag tagNew(edm::InputTag(label, instance, process));
if (tagOld.encode() != tagNew.encode()) {
filterproduct.addCollectionTag(tagNew);
tagOld = tagNew;
}
}
for (unsigned int i = 0; i < originTag2_.size(); ++i) {
filterproduct.addCollectionTag(originTag2_[i]);
}
tagOld = edm::InputTag();
for (trigger::size_type i2 = 0; i2 != n2; ++i2) {
const edm::ProductID pid(coll2[i2].id());
const auto& prov = iEvent.getStableProvenance(pid);
const std::string& label(prov.moduleLabel());
const std::string& instance(prov.productInstanceName());
const std::string& process(prov.processName());
edm::InputTag tagNew(edm::InputTag(label, instance, process));
if (tagOld.encode() != tagNew.encode()) {
filterproduct.addCollectionTag(tagNew);
tagOld = tagNew;
}
}
for (unsigned int i = 0; i < originTag3_.size(); ++i) {
filterproduct.addCollectionTag(originTag3_[i]);
}
tagOld = edm::InputTag();
for (trigger::size_type i3 = 0; i3 != n3; ++i3) {
const edm::ProductID pid(coll3[i3].id());
const auto& prov = iEvent.getStableProvenance(pid);
const std::string& label(prov.moduleLabel());
const std::string& instance(prov.productInstanceName());
const std::string& process(prov.processName());
edm::InputTag tagNew(edm::InputTag(label, instance, process));
if (tagOld.encode() != tagNew.encode()) {
filterproduct.addCollectionTag(tagNew);
tagOld = tagNew;
}
}
}
return true;
} else
return false;
}
// ------------ method called to produce the data ------------
template <typename T1, typename T2, typename T3>
bool HLTTripletMass<T1, T2, T3>::hltFilter(edm::Event& iEvent,
const edm::EventSetup& iSetup,
trigger::TriggerFilterObjectWithRefs& filterproduct) const {
// All HLT filters must create and fill an HLT filter object,
// recording any reconstructed physics objects satisfying (or not)
// this HLT filter, and place it in the Event.
std::vector<T1Ref> coll1;
std::vector<T2Ref> coll2;
std::vector<T3Ref> coll3;
int n(0);
if (getCollections(iEvent, coll1, coll2, coll3, filterproduct)) {
T1Ref r1;
T2Ref r2;
T3Ref r3;
reco::Particle::LorentzVector dauA_p4, dauB_p4, dauAB_p4, dauC_p4;
for (unsigned int i1 = 0; i1 != coll1.size(); i1++) {
r1 = coll1[i1];
dauA_p4 = reco::Particle::LorentzVector(r1->px(), r1->py(), r1->pz(), r1->energy());
unsigned int i2 = is1and2Same_ ? i1 + 1 : 0;
for (; i2 != coll2.size(); i2++) {
r2 = coll2[i2];
dauB_p4 = reco::Particle::LorentzVector(r2->px(), r2->py(), r2->pz(), r2->energy());
dauAB_p4 = dauA_p4 + dauB_p4;
unsigned int i3 = is2and3Same_ ? i2 + 1 : 0;
for (; i3 != coll3.size(); i3++) {
r3 = coll3[i3];
dauC_p4 = reco::Particle::LorentzVector(r3->px(), r3->py(), r3->pz(), r3->energy());
if (reco::deltaR2(dauAB_p4, dauC_p4) > max_DR2_) {
continue;
}
bool passesMassCut = false;
auto const mass_ABC = (dauC_p4 + dauAB_p4).mass();
for (unsigned int j = 0; j < max_InvMass_.size(); j++) {
if ((mass_ABC >= min_InvMass_[j]) and (mass_ABC < max_InvMass_[j])) {
passesMassCut = true;
break;
}
}
if (passesMassCut) {
n++;
filterproduct.addObject(triggerType1_, r1);
filterproduct.addObject(triggerType2_, r2);
filterproduct.addObject(triggerType3_, r3);
}
}
}
}
}
return (n >= min_N_);
}
typedef HLTTripletMass<reco::RecoChargedCandidate, reco::RecoChargedCandidate, reco::RecoEcalCandidate>
HLT3MuonMuonPhotonMass;
DEFINE_FWK_MODULE(HLT3MuonMuonPhotonMass);
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