/usr/include/fastjet/EECambridgePlugin.hh is in libfastjetplugins-dev 3.0.6+dfsg-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | #ifndef __EECAMBRIDGEPLUGIN_HH__
#define __EECAMBRIDGEPLUGIN_HH__
//STARTHEADER
// $Id: EECambridgePlugin.hh 2692 2011-11-14 16:27:44Z soyez $
//
// Copyright (c) 2009, Matteo Cacciari, Gavin 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 and are described in hep-ph/0512210. If you use
// FastJet as part of work towards a scientific publication, please
// include a citation to the FastJet paper.
//
// 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/>.
//----------------------------------------------------------------------
//ENDHEADER
#include "fastjet/JetDefinition.hh"
FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
// forward declaration to reduce includes
class ClusterSequence;
//----------------------------------------------------------------------
//
/// @ingroup plugins
/// \class EECambridgePlugin
/// Implementation of the e+e- Cambridge algorithm (plugin for fastjet v2.4 upwards)
///
/// EECambridgePlugin is a plugin for fastjet (v2.4 upwards)
/// It implements the Cambridge algorithm, as defined in
///
/// Better jet clustering algorithms
/// Yuri Dokshitzer, Garth Leder, Stefano Moretti, Bryan Webber
/// JHEP 9708 (1997) 001
/// http://www-spires.slac.stanford.edu/spires/find/hep/www?rawcmd=FIND+j+JHEPA%2C9708%2C001
///
/// On construction one must supply a ycut value.
///
/// To get the jets at the end call ClusterSequence::inclusive_jets();
class EECambridgePlugin : public JetDefinition::Plugin {
public:
/// Main constructor for the EECambridge Plugin class.
/// It takes the dimensionless parameter ycut (the Q value for normalisation
/// of the kt-distances is taken from the sum of all particle energies).
EECambridgePlugin (double ycut_in) : _ycut(ycut_in) {}
/// copy constructor
EECambridgePlugin (const EECambridgePlugin & plugin) {
*this = plugin;
}
// the things that are required by base class
virtual std::string description () const;
virtual void run_clustering(ClusterSequence &) const;
double ycut() const {return _ycut;}
/// the plugin mechanism's standard way of accessing the jet radius.
/// This must be set to return something sensible, even if R
/// does not make sense for this algorithm!
virtual double R() const {return 1.0;}
/// avoid the warning whenever the user requests "exclusive" jets
/// from the cluster sequence
virtual bool exclusive_sequence_meaningful() const {return true;}
private:
double _ycut;
};
FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh
#endif // __EECAMBRIDGEPLUGIN_HH__
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