DecayChannel.h

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/*  YAP - Yet another PWA toolkit
    Copyright 2015, Technische Universitaet Muenchen,
    Authors: Daniel Greenwald, Johannes Rauch

    This program 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.

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */


#ifndef yap_DecayChannel_h
#define yap_DecayChannel_h

#include "fwd/DecayChannel.h"

#include "fwd/Model.h"
#include "fwd/Particle.h"
#include "fwd/ParticleCombination.h"
#include "fwd/PhaseSpaceFactor.h"
#include "fwd/SpinAmplitude.h"

#include <memory>
#include <string>

namespace yap {

class DecayChannel
{
public:


    DecayChannel(const ParticleVector& daughters);


    virtual bool consistent() const;


    const ParticleVector& daughters() const
    { return Daughters_; }

    const SpinAmplitudeVector& spinAmplitudes() const
    { return SpinAmplitudes_; }

    const PhaseSpaceFactorMap& phaseSpaceFactors() const
    { return PhaseSpaceFactors_; }

    const ParticleCombinationSet& particleCombinations() const
    { return ParticleCombinations_; }

    const Model* model() const;


    void addSpinAmplitude(std::shared_ptr<SpinAmplitude> sa);

    void addAllPossibleSpinAmplitudes(unsigned two_J);

    friend class DecayingParticle;

protected:

    virtual void registerWithModel();

    virtual void addParticleCombination(std::shared_ptr<ParticleCombination> c);

    virtual void pruneParticleCombinations();

private:

    ParticleVector Daughters_;

    SpinAmplitudeVector SpinAmplitudes_;

    PhaseSpaceFactorMap PhaseSpaceFactors_;

    ParticleCombinationSet ParticleCombinations_;

};

const int charge(const DecayChannel& dc);

std::string to_string(const DecayChannel& dc);

inline std::ostream& operator<< (std::ostream& os, const DecayChannel& dc)
{ os << to_string(dc); return os; }

}

#endif