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 #ifndef __D0RUNICONEPLUGIN_HH__
 #define __D0RUNICONEPLUGIN_HH__
 
 //FJSTARTHEADER
 // $Id: D0RunIConePlugin.hh 1778 2010-10-25 10:02:58Z soyez $
 //
 // Copyright (c) 2009-2021, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
 //
 //----------------------------------------------------------------------
 // This file is part of FastJet.
 //
 //  FastJet is free software; you can redistribute it and/or modify
 //  it under the terms of the GNU General Public License as published by
 //  the Free Software Foundation; either version 2 of the License, or
 //  (at your option) any later version.
 //
 //  The algorithms that underlie FastJet have required considerable
 //  development. They are described in the original FastJet paper,
 //  hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use
 //  FastJet as part of work towards a scientific publication, please
 //  quote the version you use and include a citation to the manual and
 //  optionally also to hep-ph/0512210.
 //
 //  FastJet is distributed in the hope that it will be useful,
 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 //  GNU General Public License for more details.
 //
 //  You should have received a copy of the GNU General Public License
 //  along with FastJet. If not, see <http://www.gnu.org/licenses/>.
 //----------------------------------------------------------------------
 //FJENDHEADER
 
 #include "fastjet/internal/base.hh"     // namespace macros (include explicitly to help Doxygen)
 #include "fastjet/D0RunIBaseConePlugin.hh"
 #include "fastjet/internal/thread_safety_helpers.hh"  // helpers to write transparent code w&wo C++11 features
 
 // questionable whether this should be in fastjet namespace or not...
 
 FASTJET_BEGIN_NAMESPACE      // defined in fastjet/internal/base.hh
 
 //----------------------------------------------------------------------
 //
 /// @ingroup plugins
 /// \class D0RunIConePlugin
 ///
 /// A plugin for FastJet (v3.0 or later) that provides an interface to
 /// the D0 version of Run-I cone algorithm
 ///
 /// The D0 code has been obtained from Lars Sonnenschein's web-space
 /// http://www-d0.fnal.gov/~sonne/D0RunIcone.tgz
 ///
 /// The version of the D0 Run I code distributed
 /// here has been modified by the FastJet authors, so as to provide
 /// access to the contents of the jets (as is necessary for the
 /// plugin). This does not modify the results of the clustering.
 ///
 /// The difference between this algorithm and the post-1996 version
 /// relates to the way the final jet momenta are calculated. Details
 /// are to be found in FERMILAB-PUB-97-242-E.
 //
 //----------------------------------------------------------------------
 class D0RunIConePlugin : public D0RunIBaseConePlugin {
 public:
   /// The D0RunIConePlugin constructor, which sets the "free" parameters of the
   /// algorithm:
   ///
   ///  \param CONErad is the cone radius
   ///
   ///  \param JETmne is a minimum ET requirement on every iteration
   ///    (jet dropped if Et < JETmne * Et_min_ratio ).
   ///    The value that has been used by D0 for JETmne: 8 GeV 
   ///    (and Et_min_ratio is 0.5)
   ///
   ///  \param SPlifr is the shared Et fraction splitting threshold, and
   ///    a value of 0.5 was usually used by D0
   ///
   /// The remaining parameters of the algorithm are not to be modified if the algorithm
   /// is to correspond to the one actually used by D0.
   ///
   D0RunIConePlugin (double CONErad_in, double JETmne_in , double SPLifr_in = _DEFAULT_SPLifr)
     : D0RunIBaseConePlugin(CONErad_in, JETmne_in , SPLifr_in){}
 
   // the things that are required by base class
   virtual std::string description () const;
 
   // the part that really does the clustering
   virtual void run_clustering(ClusterSequence &) const;
 
 private:
   static thread_safety_helpers::FirstTimeTrue _first_time;
 
   /// print a banner for reference to the 3rd-party code
   void _print_banner(std::ostream *ostr) const;
 };
 
 
 
 FASTJET_END_NAMESPACE      // defined in fastjet/internal/base.hh
 
 #endif // __D0RUNICONEPLUGIN_HH__

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