EvtDalitzTable.hh

Go to the documentation of this file.

 
/***********************************************************************
* 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 const EvtDalitzTable& getInstance( const std::string dec_name = "",
                                              bool verbose = true );
 
    std::vector<EvtDalitzDecayInfo> getDalitzTable( const EvtId& parent ) const;
 
  protected:
    EvtDalitzTable();
    ~EvtDalitzTable();
 
  private:
    bool fileHasBeenRead( const std::string dec_name ) const;
    void readXMLDecayFile( const std::string dec_name, bool verbose = true );
    void checkParticle( std::string particle ) const;
 
    void addDecay( EvtId parent, const EvtDalitzDecayInfo& dec );
    void copyDecay( EvtId parent, EvtId* daughters, EvtId copy, EvtId* copyd );
 
    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>> m_dalitztable;
    std::vector<std::string> m_readFiles;
 
    EvtDalitzTable( const EvtDalitzTable& );
    EvtDalitzTable& operator=( const EvtDalitzTable& );
 
    //to calculate probMax
    double calcProbMax( EvtDalitzPlot dp, EvtDalitzDecayInfo* model );
    double calcProb( EvtDalitzPoint point, EvtDalitzDecayInfo* model );
};
 
#endif