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EvtDalitzTable.hh
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/***********************************************************************
* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
* *
* This file is part of EvtGen. *
* *
* EvtGen 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 3 of the License, or *
* (at your option) any later version. *
* *
* EvtGen 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 EvtGen. If not, see <https://www.gnu.org/licenses/>. *
***********************************************************************/
#ifndef EVTDALITZTABLE_HPP
#define EVTDALITZTABLE_HPP
#include "EvtGenBase/EvtCyclic3.hh"
#include "EvtGenBase/EvtDalitzPlot.hh"
#include "EvtGenBase/EvtDalitzReso.hh"
#include "EvtGenBase/EvtId.hh"
#include "EvtGenBase/EvtSpinType.hh"
#include "EvtGenModels/EvtDalitzDecayInfo.hh"
#include <map>
#include <string>
#include <vector>
// Description: Model to describe a generic dalitz decay
class EvtDalitzTable {
public:
static EvtDalitzTable* getInstance( const std::string dec_name = "",
bool verbose = true );
bool fileHasBeenRead( const std::string dec_name );
void readXMLDecayFile( const std::string dec_name, bool verbose = true );
void checkParticle( std::string particle );
void addDecay( EvtId parent, const EvtDalitzDecayInfo& dec );
void copyDecay( EvtId parent, EvtId* daughters, EvtId copy, EvtId* copyd );
std::vector<EvtDalitzDecayInfo> getDalitzTable( const EvtId& parent );
protected:
EvtDalitzTable();
~EvtDalitzTable();
private:
EvtDalitzReso getResonance( std::string shape, EvtDalitzPlot dp,
EvtCyclic3::Pair angPair,
EvtCyclic3::Pair resPair,
EvtSpinType::spintype spinType, double mass,
double width, double FFp, double FFr,
double alpha, double aLass, double rLass,
double BLass, double phiBLass, double RLass,
double phiRLass, double cutoffLass );
int getDaughterPairs(
EvtId* resDaughter, EvtId* daughter,
std::vector<std::pair<EvtCyclic3::Pair, EvtCyclic3::Pair>>& angAndResPairs );
std::map<EvtId, std::vector<EvtDalitzDecayInfo>> _dalitztable;
std::vector<std::string> _readFiles;
EvtDalitzTable( const EvtDalitzTable& );
EvtDalitzTable& operator=( const EvtDalitzTable& );
//to calculate probMax
double calcProbMax( EvtDalitzPlot dp, EvtDalitzDecayInfo* model );
double calcProb( EvtDalitzPoint point, EvtDalitzDecayInfo* model );
};
#endif

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