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File indexing completed on 2025-01-30 10:06:46
0001 #ifndef __FASTJET_TILINGEXTENT_HH__ 0002 #define __FASTJET_TILINGEXTENT_HH__ 0003 0004 #include "fastjet/ClusterSequence.hh" 0005 0006 //FJSTARTHEADER 0007 // $Id$ 0008 // 0009 // Copyright (c) 2005-2021, Matteo Cacciari, Gavin P. Salam and Gregory Soyez 0010 // 0011 //---------------------------------------------------------------------- 0012 // This file is part of FastJet. 0013 // 0014 // FastJet is free software; you can redistribute it and/or modify 0015 // it under the terms of the GNU General Public License as published by 0016 // the Free Software Foundation; either version 2 of the License, or 0017 // (at your option) any later version. 0018 // 0019 // The algorithms that underlie FastJet have required considerable 0020 // development. They are described in the original FastJet paper, 0021 // hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use 0022 // FastJet as part of work towards a scientific publication, please 0023 // quote the version you use and include a citation to the manual and 0024 // optionally also to hep-ph/0512210. 0025 // 0026 // FastJet is distributed in the hope that it will be useful, 0027 // but WITHOUT ANY WARRANTY; without even the implied warranty of 0028 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0029 // GNU General Public License for more details. 0030 // 0031 // You should have received a copy of the GNU General Public License 0032 // along with FastJet. If not, see <http://www.gnu.org/licenses/>. 0033 //---------------------------------------------------------------------- 0034 //FJENDHEADER 0035 0036 FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh 0037 0038 //---------------------------------------------------------------------- 0039 /// class to perform a fast analysis of the appropriate rapidity range 0040 /// in which to perform tiling 0041 class TilingExtent { 0042 public: 0043 /// constructor that takes a ClusterSequence in a state where the 0044 /// initial particles have been set up, but before clustering has 0045 /// started. 0046 TilingExtent(ClusterSequence & cs); 0047 0048 /// constructor that takes a list of PseudoJets 0049 TilingExtent(const std::vector<PseudoJet> &particles); 0050 0051 /// returns the suggested minimum rapidity for the tiling 0052 double minrap() const {return _minrap;} 0053 /// returns the suggested maximum rapidity for the tiling 0054 double maxrap() const {return _maxrap;} 0055 0056 /// internally, the class bins the particle multiplicity versus 0057 /// rapidity, in bins of size 1 running roughly from minrap to maxrap 0058 /// (including overflows); this function returns the sum of squares 0059 /// of bin contents, which may be informative for deciding strategy 0060 /// choices. 0061 double sum_of_binned_squared_multiplicity() const {return _cumul2;} 0062 0063 private: 0064 double _minrap, _maxrap, _cumul2; 0065 0066 /// attempts to calculate a sensible rapidity extent for the tiling 0067 void _determine_rapidity_extent(const std::vector<PseudoJet> & particles); 0068 }; 0069 0070 FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh 0071 0072 #endif // __FASTJET_TILINGEXTENT_HH__
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