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TwoKaonCzyzCurrent.h
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TwoKaonCzyzCurrent.h
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// -*- C++ -*-
#ifndef Herwig_TwoKaonCzyzCurrent_H
#define Herwig_TwoKaonCzyzCurrent_H
//
// This is the declaration of the TwoKaonCzyzCurrent class.
//
#include "WeakCurrent.h"
namespace Herwig {
using namespace ThePEG;
/**
* The TwoKaonCzyzCurrent class implements the current of PRD 81 094014 for the
* production of two kaons.
*
* @see \ref TwoKaonCzyzCurrentInterfaces "The interfaces"
* defined for TwoKaonCzyzCurrent.
*/
class TwoKaonCzyzCurrent: public WeakCurrent {
public:
/**
* The default constructor.
*/
TwoKaonCzyzCurrent();
/** @name Methods for the construction of the phase space integrator. */
//@{
/**
* Complete the construction of the decay mode for integration.classes inheriting
* from this one.
* This method is purely virtual and must be implemented in the classes inheriting
* from WeakCurrent.
* @param icharge The total charge of the outgoing particles in the current.
* @param resonance If specified only include terms with this particle
* @param flavour Information on the required flavours of the quarks
* @param imode The mode in the current being asked for.
* @param mode The phase space mode for the integration
* @param iloc The location of the of the first particle from the current in
* the list of outgoing particles.
* @param ires The location of the first intermediate for the current.
* @param phase The prototype phase space channel for the integration.
* @param upp The maximum possible mass the particles in the current are
* allowed to have.
* @return Whether the current was sucessfully constructed.
*/
virtual bool createMode(int icharge, tcPDPtr resonance,FlavourInfo flavour,
unsigned int imode,PhaseSpaceModePtr mode,
unsigned int iloc,int ires,
PhaseSpaceChannel phase, Energy upp );
/**
* The particles produced by the current. This just returns the two pseudoscalar
* mesons and the photon.
* @param icharge The total charge of the particles in the current.
* @param imode The mode for which the particles are being requested
* @param iq The PDG code for the quark
* @param ia The PDG code for the antiquark
* @return The external particles for the current.
*/
virtual tPDVector particles(int icharge, unsigned int imode, int iq, int ia);
//@}
/**
* Hadronic current. This method is purely virtual and must be implemented in
* all classes inheriting from this one.
* @param resonance If specified only include terms with this particle
* @param flavour Information on the required flavours of the quarks
* @param imode The mode
* @param ichan The phase-space channel the current is needed for.
* @param scale The invariant mass of the particles in the current.
* @param outgoing The particles produced in the decay
* @param momenta The momenta of the particles produced in the decay
* @param meopt Option for the calculation of the matrix element
* @return The current.
*/
virtual vector<LorentzPolarizationVectorE>
current(tcPDPtr resonance, FlavourInfo flavour,
const int imode, const int ichan,Energy & scale,
const tPDVector & outgoing,
const vector<Lorentz5Momentum> & momenta,
DecayIntegrator::MEOption meopt) const;
/**
* Accept the decay. Checks the particles are the allowed mode.
* @param id The id's of the particles in the current.
* @return Can this current have the external particles specified.
*/
virtual bool accept(vector<int> id);
/**
* Return the decay mode number for a given set of particles in the current.
* @param id The id's of the particles in the current.
* @return The number of the mode
*/
virtual unsigned int decayMode(vector<int> id);
/**
* Output the setup information for the particle database
* @param os The stream to output the information to
* @param header Whether or not to output the information for MySQL
* @param create Whether or not to add a statement creating the object
*/
virtual void dataBaseOutput(ofstream & os,bool header,bool create) const;
/**
* Calculation of the kaon form factor
*/
Complex Fkaon(Energy2 q2,const int imode, const int ichan,
IsoSpin::IsoSpin Itotal,
Strangeness::Strange strange,
tcPDPtr resonance,
Energy ma, Energy mb) const;
/**
* Calculation of the kaon form factor, remainder I=1
*/
Complex FkaonRemainderI1(Energy2 q2) const;
/**
* Calculation of the kaon form factor, remainder I=0
*/
Complex FkaonRemainderI0(Energy2 q2,Energy ma, Energy mb) const;
public:
/** @name Functions used by the persistent I/O system. */
//@{
/**
* Function used to write out object persistently.
* @param os the persistent output stream written to.
*/
void persistentOutput(PersistentOStream & os) const;
/**
* Function used to read in object persistently.
* @param is the persistent input stream read from.
* @param version the version number of the object when written.
*/
void persistentInput(PersistentIStream & is, int version);
//@}
/**
* The standard Init function used to initialize the interfaces.
* Called exactly once for each class by the class description system
* before the main function starts or
* when this class is dynamically loaded.
*/
static void Init();
protected:
/** @name Clone Methods. */
//@{
/**
* Make a simple clone of this object.
* @return a pointer to the new object.
*/
virtual IBPtr clone() const;
/** Make a clone of this object, possibly modifying the cloned object
* to make it sane.
* @return a pointer to the new object.
*/
virtual IBPtr fullclone() const;
//@}
protected:
/** @name Standard Interfaced functions. */
//@{
/**
* Initialize this object after the setup phase before saving and
* EventGenerator to disk.
* @throws InitException if object could not be initialized properly.
*/
virtual void doinit();
//@}
/**
* Construct the interpolators
*/
void constructInterpolators() const;
private:
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
TwoKaonCzyzCurrent & operator=(const TwoKaonCzyzCurrent &) = delete;
private:
/**
* Weights for the different \f$\rho\f$ resonances in the current, \f$\alpha_k\f$.
*/
//@{
/**
* The Complex weight used in the calculation
*/
vector<Complex> rhoWgt_;
/**
* The magnitude for input
*/
vector<double> rhoMag_;
/**
* The phase for input
*/
vector<double> rhoPhase_;
//@}
/**
* Weights for the different \f$\omega\f$ resonances in the current, \f$\alpha_k\f$.
*/
//@{
/**
* The Complex weight used in the calculation
*/
vector<Complex> omegaWgt_;
/**
* The magnitude for input
*/
vector<double> omegaMag_;
/**
* The phase for input
*/
vector<double> omegaPhase_;
//@}
/**
* Weights for the different \f$\phi\f$ resonances in the current, \f$\alpha_k\f$.
*/
//@{
/**
* The Complex weight used in the calculation
*/
vector<Complex> phiWgt_;
/**
* The magnitude for input
*/
vector<double> phiMag_;
/**
* The phase for input
*/
vector<double> phiPhase_;
//@}
/**
* The masses of the \f$\rho\f$ resonances.
*/
vector<Energy> rhoMasses_;
/**
* The widths of the \f$\rho\f$ resonances.
*/
vector<Energy> rhoWidths_;
/**
* The masses of the \f$\omega\f$ resonances.
*/
vector<Energy> omegaMasses_;
/**
* The widths of the \f$\omega\f$ resonances.
*/
vector<Energy> omegaWidths_;
/**
* The masses of the \f$\phi\f$ resonances.
*/
vector<Energy> phiMasses_;
/**
* The widths of the \f$\phi\f$ resonances.
*/
vector<Energy> phiWidths_;
/**
* Regge \f$\beta\f$ parameter for \f$\rho\f$ resonances
*/
double betaRho_;
/**
* Regge \f$\beta\f$ parameter for \f$\omega\f$ resonances
*/
double betaOmega_;
/**
* Regge \f$\beta\f$ parameter for \f$\phi\f$ resonances
*/
double betaPhi_;
/**
* Number of resonaces at which to trucated the series
*/
unsigned int nMax_;
/**
* The \f$\eta_\phi\f$ parameter
*/
double etaPhi_;
/**
* The \f$\gamma_\omega\f$ parameter
*/
double gammaOmega_;
/**
* The \f$\gamma_\phi\f$ parameter
*/
double gammaPhi_;
/**
* Masses of the resonances
*/
vector<vector<Energy> > mass_;
/**
* Widths of the resonances
*/
vector<vector<Energy> > width_;
/**
* Couplings of the resonaces
*/
vector<vector<Complex> > coup_;
/**
* The function \f$\frac{\\hat{H}}{dq^2}\f$ at \f$q^2=m^2\f$ for the GS form of the
* Breit-Wigner
*/
vector<double> dh_;
/**
* The function \f$\\hat{H}\f$ at \f$q^2=m^2\f$ for the GS form of the
* Breit-Wigner
*/
vector<Energy2> hres_;
/**
* The \f$H(0)\f$ parameter for the GS form of the
* Breit-Wigner
*/
vector<Energy2> h0_;
/**
* The charged pion mass
*/
Energy mpi_;
/**
* The maximum energy
*/
Energy eMax_;
/**
* Interpolators for the higher resonance components for speed
*/
mutable Interpolator<double,Energy2>::Ptr fKI0Re_, fKI0Im_,fKI1Re_, fKI1Im_;
};
}
#endif /* Herwig_TwoKaonCzyzCurrent_H */

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