File indexing completed on 2023-03-17 11:16:06
0001 #include "FWCore/Framework/interface/global/EDProducer.h"
0002 #include "FWCore/Framework/interface/Event.h"
0003 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0004 #include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
0005 #include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
0006 #include "FWCore/Utilities/interface/transform.h"
0007 #include "DataFormats/NanoAOD/interface/FlatTable.h"
0008 #include "SimDataFormats/GeneratorProducts/interface/LHEEventProduct.h"
0009 #include "TLorentzVector.h"
0010
0011 #include <vector>
0012 #include <iostream>
0013
0014 class LHETablesProducer : public edm::global::EDProducer<> {
0015 public:
0016 LHETablesProducer(edm::ParameterSet const& params)
0017 : lheTag_(edm::vector_transform(params.getParameter<std::vector<edm::InputTag>>("lheInfo"),
0018 [this](const edm::InputTag& tag) { return mayConsume<LHEEventProduct>(tag); })),
0019 precision_(params.getParameter<int>("precision")),
0020 storeLHEParticles_(params.getParameter<bool>("storeLHEParticles")) {
0021 produces<nanoaod::FlatTable>("LHE");
0022 if (storeLHEParticles_)
0023 produces<nanoaod::FlatTable>("LHEPart");
0024 }
0025
0026 ~LHETablesProducer() override {}
0027
0028 void produce(edm::StreamID id, edm::Event& iEvent, const edm::EventSetup& iSetup) const override {
0029 auto lheTab = std::make_unique<nanoaod::FlatTable>(1, "LHE", true);
0030
0031 edm::Handle<LHEEventProduct> lheInfo;
0032 for (const auto& lheTag : lheTag_) {
0033 iEvent.getByToken(lheTag, lheInfo);
0034 if (lheInfo.isValid()) {
0035 break;
0036 }
0037 }
0038 if (lheInfo.isValid()) {
0039 auto lhePartTab = fillLHEObjectTable(*lheInfo, *lheTab);
0040 if (storeLHEParticles_)
0041 iEvent.put(std::move(lhePartTab), "LHEPart");
0042 } else {
0043 if (storeLHEParticles_) {
0044 auto lhePartTab = std::make_unique<nanoaod::FlatTable>(1, "LHEPart", true);
0045 iEvent.put(std::move(lhePartTab), "LHEPart");
0046 }
0047 }
0048 iEvent.put(std::move(lheTab), "LHE");
0049 }
0050
0051 std::unique_ptr<nanoaod::FlatTable> fillLHEObjectTable(const LHEEventProduct& lheProd,
0052 nanoaod::FlatTable& out) const {
0053 double lheHT = 0, lheHTIncoming = 0;
0054 unsigned int lheNj = 0, lheNb = 0, lheNc = 0, lheNuds = 0, lheNglu = 0;
0055 double lheVpt = 0;
0056 double alphaS = 0;
0057
0058 const auto& hepeup = lheProd.hepeup();
0059 const auto& pup = hepeup.PUP;
0060 int lep = -1, lepBar = -1, nu = -1, nuBar = -1;
0061 std::vector<float> vals_pt;
0062 std::vector<float> vals_eta;
0063 std::vector<float> vals_phi;
0064 std::vector<float> vals_mass;
0065 std::vector<float> vals_pz;
0066 std::vector<int> vals_pid;
0067 std::vector<int> vals_status;
0068 std::vector<int> vals_spin;
0069 alphaS = hepeup.AQCDUP;
0070 for (unsigned int i = 0, n = pup.size(); i < n; ++i) {
0071 int status = hepeup.ISTUP[i];
0072 int idabs = std::abs(hepeup.IDUP[i]);
0073 if (status == 1 || status == -1 || (status == 2 && (idabs >= 23 && idabs <= 25))) {
0074 TLorentzVector p4(pup[i][0], pup[i][1], pup[i][2], pup[i][3]);
0075 vals_pid.push_back(hepeup.IDUP[i]);
0076 vals_spin.push_back(hepeup.SPINUP[i]);
0077 vals_status.push_back(status);
0078 if (status == -1) {
0079 vals_pt.push_back(0);
0080 vals_eta.push_back(0);
0081 vals_phi.push_back(0);
0082 vals_mass.push_back(0);
0083 vals_pz.push_back(p4.Pz());
0084 } else {
0085 vals_pt.push_back(p4.Pt());
0086 vals_eta.push_back(p4.Eta());
0087 vals_phi.push_back(p4.Phi());
0088 vals_mass.push_back(p4.M());
0089 vals_pz.push_back(0);
0090 }
0091 }
0092 if ((status == 1) && ((idabs == 21) || (idabs > 0 && idabs < 7))) {
0093
0094 lheNj++;
0095 if (idabs == 5)
0096 lheNb++;
0097 else if (idabs == 4)
0098 lheNc++;
0099 else if (idabs <= 3)
0100 lheNuds++;
0101 else if (idabs == 21)
0102 lheNglu++;
0103
0104 double pt = std::hypot(pup[i][0], pup[i][1]);
0105 lheHT += pt;
0106 int mothIdx = std::max(
0107 hepeup.MOTHUP[i].first - 1,
0108 0);
0109 int mothIdxTwo = std::max(hepeup.MOTHUP[i].second - 1, 0);
0110 int mothStatus = hepeup.ISTUP[mothIdx];
0111 int mothStatusTwo = hepeup.ISTUP[mothIdxTwo];
0112 bool hasIncomingAsMother = mothStatus < 0 || mothStatusTwo < 0;
0113 if (hasIncomingAsMother)
0114 lheHTIncoming += pt;
0115 } else if (idabs == 12 || idabs == 14 || idabs == 16) {
0116 (hepeup.IDUP[i] > 0 ? nu : nuBar) = i;
0117 } else if (idabs == 11 || idabs == 13 || idabs == 15) {
0118 (hepeup.IDUP[i] > 0 ? lep : lepBar) = i;
0119 }
0120 }
0121 std::pair<int, int> v(0, 0);
0122 if (lep != -1 && lepBar != -1)
0123 v = std::make_pair(lep, lepBar);
0124 else if (lep != -1 && nuBar != -1)
0125 v = std::make_pair(lep, nuBar);
0126 else if (nu != -1 && lepBar != -1)
0127 v = std::make_pair(nu, lepBar);
0128 else if (nu != -1 && nuBar != -1)
0129 v = std::make_pair(nu, nuBar);
0130 if (v.first != -1 && v.second != -1) {
0131 lheVpt = std::hypot(pup[v.first][0] + pup[v.second][0], pup[v.first][1] + pup[v.second][1]);
0132 }
0133
0134 out.addColumnValue<uint8_t>("Njets", lheNj, "Number of jets (partons) at LHE step");
0135 out.addColumnValue<uint8_t>("Nb", lheNb, "Number of b partons at LHE step");
0136 out.addColumnValue<uint8_t>("Nc", lheNc, "Number of c partons at LHE step");
0137 out.addColumnValue<uint8_t>("Nuds", lheNuds, "Number of u,d,s partons at LHE step");
0138 out.addColumnValue<uint8_t>("Nglu", lheNglu, "Number of gluon partons at LHE step");
0139 out.addColumnValue<float>("HT", lheHT, "HT, scalar sum of parton pTs at LHE step");
0140 out.addColumnValue<float>(
0141 "HTIncoming", lheHTIncoming, "HT, scalar sum of parton pTs at LHE step, restricted to partons");
0142 out.addColumnValue<float>("Vpt", lheVpt, "pT of the W or Z boson at LHE step");
0143 out.addColumnValue<uint8_t>("NpNLO", lheProd.npNLO(), "number of partons at NLO");
0144 out.addColumnValue<uint8_t>("NpLO", lheProd.npLO(), "number of partons at LO");
0145 out.addColumnValue<float>("AlphaS", alphaS, "Per-event alphaS");
0146
0147 auto outPart = std::make_unique<nanoaod::FlatTable>(vals_pt.size(), "LHEPart", false);
0148 outPart->addColumn<float>("pt", vals_pt, "Pt of LHE particles", this->precision_);
0149 outPart->addColumn<float>("eta", vals_eta, "Pseodorapidity of LHE particles", this->precision_);
0150 outPart->addColumn<float>("phi", vals_phi, "Phi of LHE particles", this->precision_);
0151 outPart->addColumn<float>("mass", vals_mass, "Mass of LHE particles", this->precision_);
0152 outPart->addColumn<float>("incomingpz", vals_pz, "Pz of incoming LHE particles", this->precision_);
0153 outPart->addColumn<int>("pdgId", vals_pid, "PDG ID of LHE particles");
0154 outPart->addColumn<int>("status", vals_status, "LHE particle status; -1:incoming, 1:outgoing");
0155 outPart->addColumn<int>("spin", vals_spin, "Spin of LHE particles");
0156
0157 return outPart;
0158 }
0159
0160 static void fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0161 edm::ParameterSetDescription desc;
0162 desc.add<std::vector<edm::InputTag>>("lheInfo", std::vector<edm::InputTag>{{"externalLHEProducer"}, {"source"}})
0163 ->setComment("tag(s) for the LHE information (LHEEventProduct)");
0164 desc.add<int>("precision", -1)->setComment("precision on the 4-momenta of the LHE particles");
0165 desc.add<bool>("storeLHEParticles", false)
0166 ->setComment("Whether we want to store the 4-momenta of the status 1 particles at LHE level");
0167 descriptions.add("lheInfoTable", desc);
0168 }
0169
0170 protected:
0171 const std::vector<edm::EDGetTokenT<LHEEventProduct>> lheTag_;
0172 const unsigned int precision_;
0173 const bool storeLHEParticles_;
0174 };
0175
0176 #include "FWCore/Framework/interface/MakerMacros.h"
0177 DEFINE_FWK_MODULE(LHETablesProducer);