[5] | 1 | //STARTHEADER |
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| 2 | // $Id: D0RunIBaseConePlugin.cc 859 2012-11-28 01:49:23Z pavel $ |
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| 3 | // |
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| 4 | // Copyright (c) 2009-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez |
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| 5 | // |
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| 6 | //---------------------------------------------------------------------- |
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| 7 | // This file is part of FastJet. |
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| 8 | // |
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| 9 | // FastJet is free software; you can redistribute it and/or modify |
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| 10 | // it under the terms of the GNU General Public License as published by |
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| 11 | // the Free Software Foundation; either version 2 of the License, or |
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| 12 | // (at your option) any later version. |
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| 13 | // |
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| 14 | // The algorithms that underlie FastJet have required considerable |
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| 15 | // development and are described in hep-ph/0512210. If you use |
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| 16 | // FastJet as part of work towards a scientific publication, please |
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| 17 | // include a citation to the FastJet paper. |
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| 18 | // |
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| 19 | // FastJet is distributed in the hope that it will be useful, |
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| 20 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 22 | // GNU General Public License for more details. |
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| 23 | // |
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| 24 | // You should have received a copy of the GNU General Public License |
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| 25 | // along with FastJet. If not, see <http://www.gnu.org/licenses/>. |
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| 26 | //---------------------------------------------------------------------- |
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| 27 | //ENDHEADER |
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| 28 | |
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| 29 | // D0 stuff |
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| 30 | // apparently this has to go first to avoid a problem with gcc-4.0.1 builds on Macs |
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| 31 | #include <list> |
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| 32 | #include "ConeClusterAlgo.hpp" |
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| 33 | #include "HepEntityIpre96.h" |
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| 34 | #include "HepEntityI.h" |
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| 35 | |
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| 36 | #include "fastjet/D0RunIBaseConePlugin.hh" |
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| 37 | #include "fastjet/D0RunIpre96ConePlugin.hh" |
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| 38 | #include "fastjet/D0RunIConePlugin.hh" |
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| 39 | #include "fastjet/ClusterSequence.hh" |
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| 40 | #include "fastjet/Error.hh" |
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| 41 | #include <sstream> |
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| 42 | |
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| 43 | FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh |
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| 44 | |
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| 45 | using namespace std; |
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| 46 | using namespace d0runi; |
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| 47 | |
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| 48 | ///////////////////////////////////////////// |
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| 49 | // // |
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| 50 | // D0RunIBaseConePlugin implementation // |
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| 51 | // // |
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| 52 | ///////////////////////////////////////////// |
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| 53 | |
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| 54 | const double D0RunIBaseConePlugin::_DEFAULT_SPLifr = 0.5; //shared Et fraction threshold |
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| 55 | const double D0RunIBaseConePlugin::_DEFAULT_TWOrad = 0.; |
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| 56 | const bool D0RunIBaseConePlugin::_DEFAULT_D0_Angle = false; |
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| 57 | const bool D0RunIBaseConePlugin::_DEFAULT_Increase_Delta_R = true; |
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| 58 | const bool D0RunIBaseConePlugin::_DEFAULT_Kill_Far_Clusters = true; |
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| 59 | const bool D0RunIBaseConePlugin::_DEFAULT_Jet_Et_Min_On_Iter = true; |
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| 60 | const double D0RunIBaseConePlugin::_DEFAULT_Far_Ratio = 0.5; |
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| 61 | const double D0RunIBaseConePlugin::_DEFAULT_Eitem_Negdrop = -1.0; |
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| 62 | const double D0RunIBaseConePlugin::_DEFAULT_Et_Min_Ratio = 0.5; |
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| 63 | const double D0RunIBaseConePlugin::_DEFAULT_Thresh_Diff_Et = 0.01; |
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| 64 | |
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| 65 | |
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| 66 | // for the real work, we write a template class that decides which |
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| 67 | // HepEntity type to use |
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| 68 | template<typename HepEntityType> |
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| 69 | void D0RunIBaseConePlugin::run_clustering_worker(ClusterSequence & clust_seq) const{ |
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| 70 | // create the entities needed by the D0 code |
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| 71 | vector<HepEntityType> entities(clust_seq.jets().size()); |
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| 72 | list<const HepEntityType * > ensemble; |
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| 73 | for (unsigned i = 0; i < clust_seq.jets().size(); i++) { |
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| 74 | entities[i].Fill(clust_seq.jets()[i].E(), |
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| 75 | clust_seq.jets()[i].px(), |
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| 76 | clust_seq.jets()[i].py(), |
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| 77 | clust_seq.jets()[i].pz(), |
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| 78 | i); |
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| 79 | // use only the particles that do not have infinite rapidity |
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| 80 | if (abs(entities[i].pz() ) < entities[i].E() ) { |
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| 81 | ensemble.push_back(& (entities[i])); |
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| 82 | } |
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| 83 | } |
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| 84 | |
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| 85 | // prepare the D0 algorithm |
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| 86 | ConeClusterAlgo<HepEntityType> |
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| 87 | RunIconeAlgo(CONErad(), |
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| 88 | JETmne(), |
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| 89 | TWOrad(), |
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| 90 | SPLifr(), |
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| 91 | D0_Angle(), |
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| 92 | Increase_Delta_R(), |
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| 93 | Kill_Far_Clusters(), |
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| 94 | Jet_Et_Min_On_Iter(), |
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| 95 | Far_Ratio(), |
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| 96 | Eitem_Negdrop(), |
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| 97 | Et_Min_Ratio(), |
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| 98 | Thresh_Diff_Et()); |
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| 99 | |
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| 100 | |
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| 101 | // run the algorithm |
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| 102 | float Zvertex = 0.; |
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| 103 | list<HepEntityType> jets; |
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| 104 | RunIconeAlgo.makeClusters(jets, ensemble, Zvertex); |
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| 105 | |
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| 106 | // now transfer the information about the jets into the |
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| 107 | // FastJet structure |
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| 108 | for(int i = RunIconeAlgo.TempColl.size()-1; i >= 0; i--) { |
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| 109 | |
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| 110 | std::list<const HepEntityType*> tlist = RunIconeAlgo.TempColl[i].LItems(); |
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| 111 | typename std::list<const HepEntityType*>::iterator tk; |
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| 112 | |
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| 113 | // get first particle in list |
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| 114 | tk = tlist.begin(); |
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| 115 | int jet_k = (*tk)->index; |
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| 116 | |
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| 117 | // GS addition: in order to use the proper recombination scheme |
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| 118 | // used by D0 we need to keep track of the sum as a |
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| 119 | // "HepEntityType" |
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| 120 | HepEntityType jet_current_momentum = *(*tk); |
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| 121 | |
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| 122 | // now merge with remaining particles in list |
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| 123 | tk++; |
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| 124 | for (; tk != tlist.end(); tk++) { |
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| 125 | int jet_i = jet_k; |
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| 126 | int jet_j = (*tk)->index; |
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| 127 | // do a fake recombination step with dij=0 |
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| 128 | double dij = 0.0; |
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| 129 | |
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| 130 | // GS addition: find the new momentum and convert that into a |
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| 131 | // pseudo-jet |
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| 132 | jet_current_momentum.Add(**tk); |
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| 133 | PseudoJet new_mom(jet_current_momentum.px(), jet_current_momentum.py(), |
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| 134 | jet_current_momentum.pz(), jet_current_momentum.E()); |
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| 135 | |
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| 136 | clust_seq.plugin_record_ij_recombination(jet_i, jet_j, dij, new_mom, jet_k); |
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| 137 | } |
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| 138 | |
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| 139 | // NB: put a sensible looking d_iB just to be nice... |
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| 140 | double d_iB = clust_seq.jets()[jet_k].perp2(); |
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| 141 | clust_seq.plugin_record_iB_recombination(jet_k, d_iB); |
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| 142 | } |
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| 143 | } |
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| 144 | |
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| 145 | |
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| 146 | ///////////////////////////////////////////// |
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| 147 | // // |
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| 148 | // D0RunIpre96ConePlugin implementation // |
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| 149 | // // |
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| 150 | ///////////////////////////////////////////// |
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| 151 | |
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| 152 | bool D0RunIpre96ConePlugin::_first_time=true; |
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| 153 | |
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| 154 | string D0RunIpre96ConePlugin::description () const { |
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| 155 | ostringstream desc; |
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| 156 | |
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| 157 | desc << "D0 Run I (pre 96) cone jet algorithm, with "; |
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| 158 | desc << "cone_radius = " << CONErad () << ", " |
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| 159 | << "min_jet_Et = " << JETmne () << ", " |
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| 160 | << "split_fraction = " << SPLifr (); |
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| 161 | |
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| 162 | return desc.str(); |
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| 163 | } |
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| 164 | |
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| 165 | void D0RunIpre96ConePlugin::run_clustering(ClusterSequence & clust_seq) const { |
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| 166 | // print a banner if we run this for the first time |
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| 167 | _print_banner(clust_seq.fastjet_banner_stream()); |
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| 168 | |
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| 169 | run_clustering_worker<HepEntityIpre96>(clust_seq); |
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| 170 | } |
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| 171 | |
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| 172 | // print a banner for reference to the 3rd-party code |
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| 173 | void D0RunIpre96ConePlugin::_print_banner(ostream *ostr) const{ |
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| 174 | if (! _first_time) return; |
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| 175 | _first_time=false; |
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| 176 | |
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| 177 | // make sure the user has not set the banner stream to NULL |
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| 178 | if (!ostr) return; |
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| 179 | |
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| 180 | (*ostr) << "#--------------------------------------------------------------------------" << endl; |
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| 181 | (*ostr) << "# You are running the D0 Run I (pre96) Cone plugin for FastJet " << endl; |
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| 182 | (*ostr) << "# Original code by the D0 collaboration, provided by Lars Sonnenschein; " << endl; |
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| 183 | (*ostr) << "# interface by FastJet authors " << endl; |
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| 184 | (*ostr) << "# If you use this plugin, please cite " << endl; |
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| 185 | (*ostr) << "# B. Abbott et al. [D0 Collaboration], FERMILAB-PUB-97-242-E. " << endl; |
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| 186 | (*ostr) << "# in addition to the usual FastJet reference. " << endl; |
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| 187 | (*ostr) << "#--------------------------------------------------------------------------" << endl; |
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| 188 | |
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| 189 | // make sure we really have the output done. |
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| 190 | ostr->flush(); |
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| 191 | } |
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| 192 | |
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| 193 | |
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| 194 | ///////////////////////////////////////////// |
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| 195 | // // |
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| 196 | // D0RunIConePlugin implementation // |
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| 197 | // // |
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| 198 | ///////////////////////////////////////////// |
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| 199 | |
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| 200 | bool D0RunIConePlugin::_first_time=true; |
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| 201 | |
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| 202 | string D0RunIConePlugin::description () const { |
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| 203 | ostringstream desc; |
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| 204 | |
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| 205 | desc << "D0 Run I cone jet algorithm, with "; |
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| 206 | desc << "cone_radius = " << CONErad () << ", " |
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| 207 | << "min_jet_Et = " << JETmne () << ", " |
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| 208 | << "split_fraction = " << SPLifr (); |
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| 209 | |
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| 210 | return desc.str(); |
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| 211 | } |
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| 212 | |
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| 213 | void D0RunIConePlugin::run_clustering(ClusterSequence & clust_seq) const { |
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| 214 | // print a banner if we run this for the first time |
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| 215 | _print_banner(clust_seq.fastjet_banner_stream()); |
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| 216 | |
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| 217 | run_clustering_worker<HepEntityI>(clust_seq); |
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| 218 | } |
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| 219 | |
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| 220 | // print a banner for reference to the 3rd-party code |
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| 221 | void D0RunIConePlugin::_print_banner(ostream *ostr) const{ |
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| 222 | if (! _first_time) return; |
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| 223 | _first_time=false; |
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| 224 | |
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| 225 | // make sure the user has not set the banner stream to NULL |
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| 226 | if (!ostr) return; |
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| 227 | |
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| 228 | (*ostr) << "#--------------------------------------------------------------------------" << endl; |
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| 229 | (*ostr) << "# You are running the D0 Run I Cone plugin for FastJet " << endl; |
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| 230 | (*ostr) << "# Original code provided by Lars Sonnenschein; interface by FastJet authors" << endl; |
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| 231 | (*ostr) << "# If you use this plugin, please cite " << endl; |
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| 232 | (*ostr) << "# B. Abbott et al. [D0 Collaboration], FERMILAB-PUB-97-242-E. " << endl; |
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| 233 | (*ostr) << "# in addition to the usual FastJet reference. " << endl; |
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| 234 | (*ostr) << "#--------------------------------------------------------------------------" << endl; |
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| 235 | |
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| 236 | // make sure we really have the output done. |
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| 237 | ostr->flush(); |
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| 238 | } |
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| 239 | |
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| 240 | |
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| 241 | |
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| 242 | FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh |
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