| 1 | //STARTHEADER
|
|---|
| 2 | // $Id: CDFJetCluPlugin.cc,v 1.2 2008-12-18 13:38:29 ovyn Exp $
|
|---|
| 3 | //
|
|---|
| 4 | // Copyright (c) 2005-2006, Matteo Cacciari and Gavin Salam
|
|---|
| 5 | //
|
|---|
| 6 | //----------------------------------------------------------------------
|
|---|
| 7 | // This file is part of FastJet.
|
|---|
| 8 | //
|
|---|
| 9 | // FastJet is free software; you can redistribute it and/or modify
|
|---|
| 10 | // it under the terms of the GNU General Public License as published by
|
|---|
| 11 | // the Free Software Foundation; either version 2 of the License, or
|
|---|
| 12 | // (at your option) any later version.
|
|---|
| 13 | //
|
|---|
| 14 | // The algorithms that underlie FastJet have required considerable
|
|---|
| 15 | // development and are described in hep-ph/0512210. If you use
|
|---|
| 16 | // FastJet as part of work towards a scientific publication, please
|
|---|
| 17 | // include a citation to the FastJet paper.
|
|---|
| 18 | //
|
|---|
| 19 | // FastJet is distributed in the hope that it will be useful,
|
|---|
| 20 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 22 | // GNU General Public License for more details.
|
|---|
| 23 | //
|
|---|
| 24 | // You should have received a copy of the GNU General Public License
|
|---|
| 25 | // along with FastJet; if not, write to the Free Software
|
|---|
| 26 | // Foundation, Inc.:
|
|---|
| 27 | // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|---|
| 28 | //----------------------------------------------------------------------
|
|---|
| 29 | //ENDHEADER
|
|---|
| 30 |
|
|---|
| 31 | #include "CDFJetCluPlugin.hh"
|
|---|
| 32 | #include "Utilities/Fastjet/include/fastjet/ClusterSequence.hh"
|
|---|
| 33 | #include <sstream>
|
|---|
| 34 | #include <cassert>
|
|---|
| 35 |
|
|---|
| 36 | // CDF stuff
|
|---|
| 37 | #include "interface/JetCluAlgorithm.hh"
|
|---|
| 38 | #include "interface/PhysicsTower.hh"
|
|---|
| 39 | #include "interface/Cluster.hh"
|
|---|
| 40 |
|
|---|
| 41 | FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
|
|---|
| 42 |
|
|---|
| 43 | using namespace std;
|
|---|
| 44 |
|
|---|
| 45 | string CDFJetCluPlugin::description () const {
|
|---|
| 46 | ostringstream desc;
|
|---|
| 47 |
|
|---|
| 48 | desc << "CDF JetClu jet algorithm with "
|
|---|
| 49 | << "seed_threshold = " << seed_threshold () << ", "
|
|---|
| 50 | << "cone_radius = " << cone_radius () << ", "
|
|---|
| 51 | << "adjacency_cut = " << adjacency_cut () << ", "
|
|---|
| 52 | << "max_iterations = " << max_iterations () << ", "
|
|---|
| 53 | << "iratch = " << iratch () << ", "
|
|---|
| 54 | << "overlap_threshold = " << overlap_threshold () ;
|
|---|
| 55 |
|
|---|
| 56 | return desc.str();
|
|---|
| 57 | }
|
|---|
| 58 |
|
|---|
| 59 |
|
|---|
| 60 | void CDFJetCluPlugin::run_clustering(ClusterSequence & clust_seq) const {
|
|---|
| 61 |
|
|---|
| 62 | // create the physics towers needed by the CDF code
|
|---|
| 63 | vector<PhysicsTower> towers;
|
|---|
| 64 | towers.reserve(clust_seq.jets().size());
|
|---|
| 65 |
|
|---|
| 66 | // create a map to identify jets (actually just the input particles)...
|
|---|
| 67 | //map<double,int> jetmap;
|
|---|
| 68 |
|
|---|
| 69 | for (unsigned i = 0; i < clust_seq.jets().size(); i++) {
|
|---|
| 70 | PseudoJet particle(clust_seq.jets()[i]);
|
|---|
| 71 | //_insert_unique(particle, jetmap);
|
|---|
| 72 | LorentzVector fourvect(particle.px(), particle.py(),
|
|---|
| 73 | particle.pz(), particle.E());
|
|---|
| 74 | //std::cout<<"avant la reconstruction "<<particle.eta()<<std::endl;
|
|---|
| 75 | //PhysicsTower tower(fourvect);
|
|---|
| 76 | PhysicsTower tower(fourvect);
|
|---|
| 77 |
|
|---|
| 78 | std::cout<<"apres la reconstruction "<<tower.eta()<<std::endl;
|
|---|
| 79 | //std::cout<<"apres la reconstruction ieta "<<tower.iEta()<<std::endl;
|
|---|
| 80 |
|
|---|
| 81 |
|
|---|
| 82 | // add tracking information for later
|
|---|
| 83 | tower.fjindex = i;
|
|---|
| 84 | towers.push_back(tower);
|
|---|
| 85 | }
|
|---|
| 86 |
|
|---|
| 87 | // prepare the CDF algorithm
|
|---|
| 88 | JetCluAlgorithm j(seed_threshold(), cone_radius(), adjacency_cut(),
|
|---|
| 89 | max_iterations(), iratch(), overlap_threshold());
|
|---|
| 90 |
|
|---|
| 91 | // run the CDF algorithm
|
|---|
| 92 | std::vector<Cluster> jets;
|
|---|
| 93 | j.run(towers,jets);
|
|---|
| 94 |
|
|---|
| 95 |
|
|---|
| 96 | // now transfer the jets back into our own structure -- we will
|
|---|
| 97 | // mimic the cone code with a sequential recombination sequence in
|
|---|
| 98 | // which the jets are built up by adding one particle at a time
|
|---|
| 99 |
|
|---|
| 100 | // NB: with g++-4.0, the reverse iterator code gave problems, so switch
|
|---|
| 101 | // to indices instead
|
|---|
| 102 | //for(vector<Cluster>::const_reverse_iterator jetIter = jets.rbegin();
|
|---|
| 103 | // jetIter != jets.rend(); jetIter++) {
|
|---|
| 104 | // const vector<PhysicsTower> & tower_list = jetIter->towerList;
|
|---|
| 105 | // int jet_k = jetmap[tower_list[0].fourVector.E];
|
|---|
| 106 | //
|
|---|
| 107 | // int ntow = int(jetIter->towerList.size());
|
|---|
| 108 |
|
|---|
| 109 | for(int iCDFjets = jets.size()-1; iCDFjets >= 0; iCDFjets--) {
|
|---|
| 110 | const vector<PhysicsTower> & tower_list = jets[iCDFjets].towerList;
|
|---|
| 111 | //int jet_k = jetmap[tower_list[0].fourVector.E];
|
|---|
| 112 | int jet_k = tower_list[0].fjindex;
|
|---|
| 113 |
|
|---|
| 114 | int ntow = int(tower_list.size());
|
|---|
| 115 | for (int itow = 1; itow < ntow; itow++) {
|
|---|
| 116 | int jet_i = jet_k;
|
|---|
| 117 | // retrieve our misappropriated index for the jet
|
|---|
| 118 | int jet_j;
|
|---|
| 119 | jet_j = tower_list[itow].fjindex;
|
|---|
| 120 | //int alt_jet_j = jetmap[tower_list[itow].fourVector.E];
|
|---|
| 121 | //assert(jet_j == alt_jet_j);
|
|---|
| 122 | //cout << jet_j << endl;
|
|---|
| 123 | // safety check
|
|---|
| 124 | assert (jet_j >= 0 && jet_j < int(towers.size()));
|
|---|
| 125 | // do a fake recombination step with dij=0
|
|---|
| 126 | double dij = 0.0;
|
|---|
| 127 | // JetClu does E-scheme recombination so we can stick with the
|
|---|
| 128 | // simple option
|
|---|
| 129 | clust_seq.plugin_record_ij_recombination(jet_i, jet_j, dij, jet_k);
|
|---|
| 130 | //if (itow != ntow) {
|
|---|
| 131 | // clust_seq.plugin_record_ij_recombination(jet_i, jet_j, dij, jet_k);
|
|---|
| 132 | //} else {
|
|---|
| 133 | // clust_seq.plugin_record_ij_recombination(jet_i, jet_j, dij,
|
|---|
| 134 | // PseudoJet(jetIter->fourVector.px,jetIter->fourVector.py,
|
|---|
| 135 | // jetIter->fourVector.pz,jetIter->fourVector.E),
|
|---|
| 136 | // jet_k);
|
|---|
| 137 | //}
|
|---|
| 138 | }
|
|---|
| 139 |
|
|---|
| 140 | // NB: put a sensible looking d_iB just to be nice...
|
|---|
| 141 | double d_iB = clust_seq.jets()[jet_k].perp2();
|
|---|
| 142 | clust_seq.plugin_record_iB_recombination(jet_k, d_iB);
|
|---|
| 143 | }
|
|---|
| 144 |
|
|---|
| 145 |
|
|---|
| 146 | // following code is for testing only
|
|---|
| 147 | //cout << endl;
|
|---|
| 148 | //for(vector<Cluster>::const_iterator jetIter = jets.begin();
|
|---|
| 149 | // jetIter != jets.end(); jetIter++) {
|
|---|
| 150 | // cout << jetIter->fourVector.pt() << " " << jetIter->fourVector.y() << endl;
|
|---|
| 151 | //}
|
|---|
| 152 | //cout << "-----------------------------------------------------\n";
|
|---|
| 153 | //vector<PseudoJet> ourjets(clust_seq.inclusive_jets());
|
|---|
| 154 | //for (vector<PseudoJet>::const_iterator ourjet = ourjets.begin();
|
|---|
| 155 | // ourjet != ourjets.end(); ourjet++) {
|
|---|
| 156 | // cout << ourjet->perp() << " " << ourjet->rap() << endl;
|
|---|
| 157 | //}
|
|---|
| 158 | //cout << endl;
|
|---|
| 159 | }
|
|---|
| 160 |
|
|---|
| 161 |
|
|---|
| 162 | //// following code should now be obsolete since addition of
|
|---|
| 163 | //// index to the physics tower in the CDF code
|
|---|
| 164 | // void CDFJetCluPlugin::_insert_unique(PseudoJet & jet,
|
|---|
| 165 | // map<double,int> & jetmap) const {
|
|---|
| 166 | // while (jetmap.find(jet.E()) != jetmap.end()) {
|
|---|
| 167 | // // deal with cases where something else has the same energy, and
|
|---|
| 168 | // // also with situation where that energy is zero.
|
|---|
| 169 | // if (jet.E() != 0.0) {
|
|---|
| 170 | // jet *= 1.0+1e-12;
|
|---|
| 171 | // } else {
|
|---|
| 172 | // jet += PseudoJet(0.0,0.0,0.0,1e-300);
|
|---|
| 173 | // }
|
|---|
| 174 | // }
|
|---|
| 175 | // jetmap[jet.E()] = jet.cluster_hist_index();
|
|---|
| 176 | // }
|
|---|
| 177 |
|
|---|
| 178 |
|
|---|
| 179 | FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh
|
|---|
