FastJet 3.0.2
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00001 //STARTHEADER 00002 // $Id: CMSIterativeConePlugin.hh 1508 2009-04-10 22:46:49Z soyez $ 00003 // 00004 // Copyright (c) 2007-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez 00005 // 00006 //---------------------------------------------------------------------- 00007 // This file is part of FastJet. 00008 // 00009 // FastJet is free software; you can redistribute it and/or modify 00010 // it under the terms of the GNU General Public License as published by 00011 // the Free Software Foundation; either version 2 of the License, or 00012 // (at your option) any later version. 00013 // 00014 // The algorithms that underlie FastJet have required considerable 00015 // development and are described in hep-ph/0512210. If you use 00016 // FastJet as part of work towards a scientific publication, please 00017 // include a citation to the FastJet paper. 00018 // 00019 // FastJet is distributed in the hope that it will be useful, 00020 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00021 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00022 // GNU General Public License for more details. 00023 // 00024 // You should have received a copy of the GNU General Public License 00025 // along with FastJet. If not, see <http://www.gnu.org/licenses/>. 00026 //---------------------------------------------------------------------- 00027 //ENDHEADER 00028 00029 #ifndef __CMSITERATIVECONEPLUGIN_HH__ 00030 #define __CMSITERATIVECONEPLUGIN_HH__ 00031 00032 #include "fastjet/JetDefinition.hh" 00033 00034 // questionable whether this should be in fastjet namespace or not... 00035 FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh 00036 00037 // forward declaration to reduce includes 00038 class PseudoJet; 00039 00040 //---------------------------------------------------------------------- 00041 // 00042 00043 /// @ingroup plugins 00044 /// \class CMSIterativeConePlugin 00045 /// Implementation of the CMS Iterative Cone (plugin for fastjet v2.4 upwards) 00046 class CMSIterativeConePlugin : public JetDefinition::Plugin { 00047 public: 00048 /// Main constructor for the CMSIterativeCone Plugin class. 00049 /// 00050 /// The arguments are 00051 /// ConeRadius the radius of the cone 00052 /// SeedThreshold a threshold for the seeds to iterate from 00053 /// 00054 /// NOTE: to be more coherent with all other fastjet plugins, 00055 /// we've put the radius before the seed threshold. 00056 /// CMS does the opposite. 00057 /// In this way, we also put a default value of 0 for the 00058 /// seed threshold. 00059 CMSIterativeConePlugin (double ConeRadius, double SeedThreshold=1.0) : 00060 theConeRadius(ConeRadius), theSeedThreshold(SeedThreshold){} 00061 00062 /// copy constructor 00063 CMSIterativeConePlugin (const CMSIterativeConePlugin & plugin) { 00064 *this = plugin; 00065 } 00066 00067 // the things that are required by base class 00068 virtual std::string description () const; 00069 virtual void run_clustering(ClusterSequence &) const; 00070 00071 /// the plugin mechanism's standard way of accessing the jet radius 00072 /// here we return the R of the last alg in the list 00073 virtual double R() const {return theConeRadius;} 00074 00075 /// get the seed threshold 00076 virtual double seed_threshold() const {return theSeedThreshold;} 00077 00078 private: 00079 double theConeRadius; ///< cone radius 00080 double theSeedThreshold; ///< seed threshold 00081 00082 static bool _first_time; 00083 00084 /// print a banner for reference to the 3rd-party code 00085 void _print_banner(std::ostream *ostr) const; 00086 }; 00087 00088 FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh 00089 00090 #endif // __CMSITERATIVECONEPLUGIN_HH__ 00091