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| 1 | +#include "TFile.h" |
| 2 | +#include "TTree.h" |
| 3 | + |
| 4 | +#include <string> |
| 5 | +#include <iostream> |
| 6 | + |
| 7 | +int External() { |
| 8 | + std::string path{"/home/mattia/Documenti/cernbox/Documents/PostDoc/D2H/MC/corrBkgSigmaC/tf1/genevents_Kine.root"}; |
| 9 | + |
| 10 | + int checkPdgQuarkOne{4}; |
| 11 | + int checkPdgQuarkTwo{5}; |
| 12 | + float ratioTrigger = 1./5.; // one event triggered out of 5 |
| 13 | + std::array<std::array<int, 2>, 2> pdgReplParticles = {std::array{413, 14122}, std::array{413, 4124}}; |
| 14 | + std::array<std::array<int, 2>, 2> pdgReplPartCounters = {std::array{0, 0}, std::array{0, 0}}; |
| 15 | + std::array<float, 2> freqRepl = {0.5, 0.5}; |
| 16 | + std::map<int, int> sumOrigReplacedParticles = {{413, 0}}; |
| 17 | + |
| 18 | + std::array<int, 2> checkPdgHadron{14122, 4124}; |
| 19 | + std::map<int, std::vector<std::vector<int>>> checkHadronDecays{ // sorted (!) pdg of daughters |
| 20 | + //{14122, {{4222, -211}, {4112, 211}, {4122, 211, -211}}}, // Lc(2595)+ |
| 21 | + //{4124, {{4222, -211}, {4112, 211}, {4122, 211, -211}}} // Lc(2625)+ |
| 22 | + {14122, {{-211, 4222}, {211, 4112}, {-211, 211, 4122}}}, // Lc(2595)+ |
| 23 | + {4124, {{-211, 4222}, {211, 4112}, {-211, 211, 4122}}} // Lc(2625)+ |
| 24 | + }; |
| 25 | + |
| 26 | + TFile file(path.c_str(), "READ"); |
| 27 | + if (file.IsZombie()) { |
| 28 | + std::cerr << "Cannot open ROOT file " << path << "\n"; |
| 29 | + return 1; |
| 30 | + } |
| 31 | + |
| 32 | + auto tree = (TTree *)file.Get("o2sim"); |
| 33 | + std::vector<o2::MCTrack> *tracks{}; |
| 34 | + tree->SetBranchAddress("MCTrack", &tracks); |
| 35 | + o2::dataformats::MCEventHeader *eventHeader = nullptr; |
| 36 | + tree->SetBranchAddress("MCEventHeader.", &eventHeader); |
| 37 | + |
| 38 | + int nEventsMB{}, nEventsInjOne{}, nEventsInjTwo{}; |
| 39 | + int nSignals{}, nSignalGoodDecay{}; |
| 40 | + auto nEvents = tree->GetEntries(); |
| 41 | + |
| 42 | + for (int i = 0; i < nEvents; i++) { |
| 43 | + |
| 44 | + std::cout << std::endl; |
| 45 | + |
| 46 | + tree->GetEntry(i); |
| 47 | + |
| 48 | + // check subgenerator information |
| 49 | + int subGeneratorId{-1}; |
| 50 | + if (eventHeader->hasInfo(o2::mcgenid::GeneratorProperty::SUBGENERATORID)) { |
| 51 | + bool isValid = false; |
| 52 | + subGeneratorId = eventHeader->getInfo<int>(o2::mcgenid::GeneratorProperty::SUBGENERATORID, isValid); |
| 53 | + if (subGeneratorId == 0) { |
| 54 | + nEventsMB++; |
| 55 | + } else if (subGeneratorId == checkPdgQuarkOne) { |
| 56 | + nEventsInjOne++; |
| 57 | + } else if (subGeneratorId == checkPdgQuarkTwo) { |
| 58 | + nEventsInjTwo++; |
| 59 | + } |
| 60 | + } |
| 61 | + |
| 62 | + for (auto &track : *tracks) { |
| 63 | + auto pdg = track.GetPdgCode(); |
| 64 | + auto absPdg = std::abs(pdg); |
| 65 | + if (std::find(checkPdgHadron.begin(), checkPdgHadron.end(), absPdg) != checkPdgHadron.end()) { // found signal |
| 66 | + nSignals++; // count signal PDG |
| 67 | + std::cout << "==> signal " << absPdg << " found!" << std::endl; |
| 68 | + |
| 69 | + if (subGeneratorId == checkPdgQuarkOne) { // replacement only for prompt ---> BUT ALSO NON-PROMPT D* SEEM TO BE REPLACED |
| 70 | + for (int iRepl{0}; iRepl<2; ++iRepl) { |
| 71 | + if (absPdg == pdgReplParticles[iRepl][0]) { |
| 72 | + pdgReplPartCounters[iRepl][0]++; |
| 73 | + sumOrigReplacedParticles[pdgReplParticles[iRepl][0]]++; |
| 74 | + } else if (absPdg == pdgReplParticles[iRepl][1]) { |
| 75 | + pdgReplPartCounters[iRepl][1]++; |
| 76 | + sumOrigReplacedParticles[pdgReplParticles[iRepl][0]]++; |
| 77 | + } |
| 78 | + } |
| 79 | + } else if (subGeneratorId == checkPdgQuarkTwo) { |
| 80 | + std::cout << " NB: we have a " << absPdg << " also in event with quark " << checkPdgQuarkTwo << std::endl; |
| 81 | + std::cout << " ### mother indices: "; |
| 82 | + int idFirstMother = track.getMotherTrackId(); |
| 83 | + int idSecondMother = track.getSecondMotherTrackId(); |
| 84 | + std::vector<int> motherIds = {}; |
| 85 | + for(int i=idFirstMother; i<=idSecondMother; i++) { |
| 86 | + std::cout << i << " "; |
| 87 | + motherIds.push_back(i); |
| 88 | + } |
| 89 | + bool partonicEventOn = false; |
| 90 | + if(motherIds != std::vector<int>{-1, -1}) { |
| 91 | + std::cout << "The " << absPdg << " particle has mothers. This should mean that it comes directly from parton hadronization, and that the partonic event was kept in the MC production " << std::endl; |
| 92 | + partonicEventOn = true; |
| 93 | + } |
| 94 | + std::cout << " ### mother PDG codes: "; |
| 95 | + std::vector<int> motherPdgCodes = {}; |
| 96 | + if(partonicEventOn) { |
| 97 | + for(int i=idFirstMother; i<=idSecondMother; i++) { |
| 98 | + motherPdgCodes.push_back(tracks->at(i).GetPdgCode()); |
| 99 | + std::cout << motherPdgCodes.back() << " "; |
| 100 | + } |
| 101 | + |
| 102 | + /// check that among the mothers there is a c/cbar quark |
| 103 | + /// This means that the charm hadron comes from the c-quark hadronization, where the c/cbar quark |
| 104 | + /// comes from a c-cbar pair present in the current event, tagged with a b-bbar (e.g. double-parton scattering) |
| 105 | + if(std::find(motherPdgCodes.begin(), motherPdgCodes.end(), 4) == motherPdgCodes.end() && std::find(motherPdgCodes.begin(), motherPdgCodes.end(), -4) == motherPdgCodes.end()) { |
| 106 | + /// if the partinc event is not really saved and we arrive here, it means that motherIds != {-1, -1} because |
| 107 | + /// the hadron comes from the decay of a beauty hadron. This can happen if and only if this is not a replaced one (i.e. native from Lambdab0 decay) |
| 108 | + if (std::find(motherPdgCodes.begin(), motherPdgCodes.end(), 5122) == motherPdgCodes.end() && std::find(motherPdgCodes.begin(), motherPdgCodes.end(), -5122) == motherPdgCodes.end()) { |
| 109 | + std::cerr << "The particle " << absPdg << " does not originate neither from a c/c-bar quark (replaced) nor from a Lambda_b0 decay. There is something wrong, aborting..." << std::endl; |
| 110 | + return 1; |
| 111 | + } |
| 112 | + } |
| 113 | + } |
| 114 | + std::cout << std::endl; |
| 115 | + |
| 116 | + /// only if we arrive here it means that everything is ok, and we can safely update the counters for the final statistics |
| 117 | + for (int iRepl{0}; iRepl<2; ++iRepl) { |
| 118 | + if (absPdg == pdgReplParticles[iRepl][0]) { |
| 119 | + pdgReplPartCounters[iRepl][0]++; |
| 120 | + sumOrigReplacedParticles[pdgReplParticles[iRepl][0]]++; |
| 121 | + } else if (absPdg == pdgReplParticles[iRepl][1]) { |
| 122 | + pdgReplPartCounters[iRepl][1]++; |
| 123 | + sumOrigReplacedParticles[pdgReplParticles[iRepl][0]]++; |
| 124 | + } |
| 125 | + } |
| 126 | + } |
| 127 | + |
| 128 | + |
| 129 | + std::vector<int> pdgsDecay{}; |
| 130 | + std::vector<int> pdgsDecayAntiPart{}; |
| 131 | + if (track.getFirstDaughterTrackId() >= 0 && track.getLastDaughterTrackId() >= 0) { |
| 132 | + for (int j{track.getFirstDaughterTrackId()}; j <= track.getLastDaughterTrackId(); ++j) { |
| 133 | + auto pdgDau = tracks->at(j).GetPdgCode(); |
| 134 | + pdgsDecay.push_back(pdgDau); |
| 135 | + std::cout << " -- daughter " << j << ": " << pdgDau << std::endl; |
| 136 | + if (pdgDau != 333) { // phi is antiparticle of itself |
| 137 | + pdgsDecayAntiPart.push_back(-pdgDau); |
| 138 | + } else { |
| 139 | + pdgsDecayAntiPart.push_back(pdgDau); |
| 140 | + } |
| 141 | + } |
| 142 | + } |
| 143 | + |
| 144 | + std::sort(pdgsDecay.begin(), pdgsDecay.end()); |
| 145 | + std::sort(pdgsDecayAntiPart.begin(), pdgsDecayAntiPart.end()); |
| 146 | + |
| 147 | + for (auto &decay : checkHadronDecays[std::abs(pdg)]) { |
| 148 | + if (pdgsDecay == decay || pdgsDecayAntiPart == decay) { |
| 149 | + nSignalGoodDecay++; |
| 150 | + std::cout << " !!! GOOD DECAY FOUND !!!" << std::endl; |
| 151 | + break; |
| 152 | + } |
| 153 | + } |
| 154 | + } |
| 155 | + } // end loop over tracks |
| 156 | + } |
| 157 | + |
| 158 | + std::cout << "--------------------------------\n"; |
| 159 | + std::cout << "# Events: " << nEvents << "\n"; |
| 160 | + std::cout << "# MB events: " << nEventsMB << "\n"; |
| 161 | + std::cout << Form("# events injected with %d quark pair: ", checkPdgQuarkOne) << nEventsInjOne << "\n"; |
| 162 | + std::cout << Form("# events injected with %d quark pair: ", checkPdgQuarkTwo) << nEventsInjTwo << "\n"; |
| 163 | + std::cout <<"# signal hadrons: " << nSignals << "\n"; |
| 164 | + std::cout <<"# signal hadrons decaying in the correct channel: " << nSignalGoodDecay << "\n"; |
| 165 | + |
| 166 | + if (nEventsMB < nEvents * (1 - ratioTrigger) * 0.95 || nEventsMB > nEvents * (1 - ratioTrigger) * 1.05) { // we put some tolerance since the number of generated events is small |
| 167 | + std::cerr << "Number of generated MB events different than expected\n"; |
| 168 | + return 1; |
| 169 | + } |
| 170 | + if (nEventsInjOne < nEvents * ratioTrigger * 0.5 * 0.95 || nEventsInjOne > nEvents * ratioTrigger * 0.5 * 1.05) { |
| 171 | + std::cerr << "Number of generated events injected with " << checkPdgQuarkOne << " different than expected\n"; |
| 172 | + return 1; |
| 173 | + } |
| 174 | + if (nEventsInjTwo < nEvents * ratioTrigger * 0.5 * 0.95 || nEventsInjTwo > nEvents * ratioTrigger * 0.5 * 1.05) { |
| 175 | + std::cerr << "Number of generated events injected with " << checkPdgQuarkTwo << " different than expected\n"; |
| 176 | + return 1; |
| 177 | + } |
| 178 | + |
| 179 | + float fracForcedDecays = float(nSignalGoodDecay) / nSignals; |
| 180 | + if (fracForcedDecays < 0.9) { // we put some tolerance (e.g. due to oscillations which might change the final state) |
| 181 | + std::cerr << "Fraction of signals decaying into the correct channel " << fracForcedDecays << " lower than expected\n"; |
| 182 | + return 1; |
| 183 | + } |
| 184 | + |
| 185 | + for (int iRepl{0}; iRepl<2; ++iRepl) { |
| 186 | + |
| 187 | + std::cout << " --- pdgReplPartCounters[" << iRepl << "][1] = " << pdgReplPartCounters[iRepl][1] << ", freqRepl[" << iRepl <<"] = " << freqRepl[iRepl] << ", sumOrigReplacedParticles[pdgReplParticles[" << iRepl << "][0]] =" << sumOrigReplacedParticles[pdgReplParticles[iRepl][0]] << std::endl; |
| 188 | + |
| 189 | + if (std::abs(pdgReplPartCounters[iRepl][1] - freqRepl[iRepl] * sumOrigReplacedParticles[pdgReplParticles[iRepl][0]]) > 2 * std::sqrt(freqRepl[iRepl] * sumOrigReplacedParticles[pdgReplParticles[iRepl][0]])) { // 2 sigma compatibility |
| 190 | + float fracMeas = 0.; |
| 191 | + if (sumOrigReplacedParticles[pdgReplParticles[iRepl][0]] > 0.) { |
| 192 | + fracMeas = float(pdgReplPartCounters[iRepl][1]) / sumOrigReplacedParticles[pdgReplParticles[iRepl][0]]; |
| 193 | + } |
| 194 | + std::cerr << "Fraction of replaced " << pdgReplParticles[iRepl][0] << " into " << pdgReplParticles[iRepl][1] << " is " << fracMeas <<" (expected "<< freqRepl[iRepl] << ")\n"; |
| 195 | + return 1; |
| 196 | + } |
| 197 | + } |
| 198 | + |
| 199 | + return 0; |
| 200 | +} |
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