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inc/LauKMatrixPropagator.hh

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#include "TMatrixD.h" #include "TMatrixD.h"
#include "TString.h" #include "TString.h"
#include <map> #include <map>
#include <vector> #include <vector>
class LauKMatrixPropagator { class LauKMatrixPropagator {
public: public:
//! Constructor //! Constructor
/*! /*!
\param [in] name name of the propagator \param [in] name name of the propagator
\param [in] paramFileName the parameter file name \param [in] paramFileName the parameter file name
\param [in] resPairAmpInt the number of the daughter not produced by the resonance \param [in] resPairAmpInt the number of the daughter not produced by the resonance
\param [in] nChannels the number of channels \param [in] nChannels the number of channels
\param [in] nPoles the number of poles \param [in] nPoles the number of poles
\param [in] rowIndex this specifies which row of the propagator should be used when summing over the amplitude channels \param [in] rowIndex this specifies which row of the propagator should be used when summing over the amplitude channels
*/ */
LauKMatrixPropagator(const TString& name, const TString& paramFileName, LauKMatrixPropagator( const TString& name, const TString& paramFileName,
Int_t resPairAmpInt, Int_t nChannels, Int_t nPoles, Int_t resPairAmpInt, Int_t nChannels, Int_t nPoles,
Int_t rowIndex = 1); Int_t rowIndex = 1 );
//! Destructor //! Destructor
virtual ~LauKMatrixPropagator(); virtual ~LauKMatrixPropagator();
//! Calculate the invariant mass squared s //! Calculate the invariant mass squared s
/*! /*!
\param [in] kinematics the kinematics of the current event \param [in] kinematics the kinematics of the current event
*/ */
void updatePropagator(const LauKinematics* kinematics); void updatePropagator(const LauKinematics* kinematics);
//! Calculate the K-matrix propagator for the given s value //! Calculate the K-matrix propagator for the given s value
/*! /*!
\param [in] s the invariant mass squared \param [in] s the invariant mass squared
*/ */
void updatePropagator(Double_t s); void updatePropagator(Double_t s);
//! Read an input file to set parameters //! Read an input file to set parameters
/*! /*!
\param [in] inputFile name of the input file \param [in] inputFile name of the input file
*/ */
void setParameters(const TString& inputFile); void setParameters(const TString& inputFile);
//! Get the scattering K matrix //! Get the scattering K matrix
/*! /*!
\return the real, symmetric scattering K matrix \return the real, symmetric scattering K matrix
*/ */
TMatrixD getKMatrix() const {return ScattKMatrix_;} TMatrixD getKMatrix() const {return ScattKMatrix_;}
//! Get the real part of the propagator full matrix //! Get the real part of the propagator full matrix
/*! /*!
\return the real part of the propagator full matrix \return the real part of the propagator full matrix
*/ */
TMatrixD getRealPropMatrix() const {return realProp_;} TMatrixD getRealPropMatrix() const {return realProp_;}
//! Get the negative imaginary part of the full propagator matrix //! Get the negative imaginary part of the full propagator matrix
/*! /*!
\return the negative imaginary part of the full propagator matrix \return the negative imaginary part of the full propagator matrix
*/ */
TMatrixD getNegImagPropMatrix() const {return negImagProp_;} TMatrixD getNegImagPropMatrix() const {return negImagProp_;}
//! Get the real part of the term of the propagator //! Get the real part of the term of the propagator
/*! /*!
\param [in] channelIndex the channel number \param [in] channelIndex the channel number
\return the real part of the propagator term \return the real part of the propagator term
*/ */
Double_t getRealPropTerm(Int_t channelIndex) const; Double_t getRealPropTerm(Int_t channelIndex) const;
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//! Get coupling constants that were loaded from the input file //! Get coupling constants that were loaded from the input file
/*! /*!
\param [in] poleIndex number of the required pole \param [in] poleIndex number of the required pole
\param [in] channelIndex number of the required channel \param [in] channelIndex number of the required channel
\return the value of the coupling constant \return the value of the coupling constant
*/ */
Double_t getCouplingConstant(Int_t poleIndex, Int_t channelIndex) const; Double_t getCouplingConstant(Int_t poleIndex, Int_t channelIndex) const;
//! Get coupling parameters, set according to the input file
/*!
\param [in] poleIndex number of the required pole
\param [in] channelIndex number of the required channel
\return the parameter of the coupling constant
*/
LauParameter& getCouplingParameter(Int_t poleIndex, Int_t channelIndex);
//! Get scattering constants that were loaded from the input file //! Get scattering constants that were loaded from the input file
/*! /*!
\param [in] channel1Index number of the first channel index \param [in] channel1Index number of the first channel index
\param [in] channel2Index number of the second channel index \param [in] channel2Index number of the second channel index
\return the value of the scattering constant \return the value of the scattering constant
*/ */
Double_t getScatteringConstant(Int_t channel1Index, Int_t channel2Index) const; Double_t getScatteringConstant(Int_t channel1Index, Int_t channel2Index) const;
//! Get the "slowly-varying part" term of the amplitude //! Get the "slowly-varying part" term of the amplitude
/*! /*!
\return the svp term \return the svp term
*/ */
//! Get scattering parameters, set according to the input file
/*!
\param [in] channel1Index number of the first channel index
\param [in] channel2Index number of the second channel index
\return the parameter of the scattering constant
*/
LauParameter& getScatteringParameter(Int_t channel1Index, Int_t channel2Index);
//! Get s0 production parameter
/*!
\return the s0Prod parameter
*/
LauParameter& gets0Prod() {return s0Prod_;}
//! Get production SVP term
/*!
\return the prodSVP_ value
*/
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Double_t getProdSVPTerm() const {return prodSVP_;} Double_t getProdSVPTerm() const {return prodSVP_;}
//! Get the full complex propagator term for a given channel //! Get the full complex propagator term for a given channel
/*! /*!
\param [in] channelIndex the number of the required channel \param [in] channelIndex the number of the required channel
\return the complex propagator term \return the complex propagator term
*/ */
LauComplex getPropTerm(Int_t channelIndex) const; LauComplex getPropTerm(Int_t channelIndex) const;
//! Get the DP axis identifier //! Get the DP axis identifier
/*! /*!
/return the value to identify the DP axis in question \return the value to identify the DP axis in question
*/ */
Int_t getResPairAmpInt() const {return resPairAmpInt_;} Int_t getResPairAmpInt() const {return resPairAmpInt_;}
//! Get the number of channels //! Get the number of channels
/*! /*!
/return the number of channels \return the number of channels
*/ */
Int_t getNChannels() const {return nChannels_;} Int_t getNChannels() const {return nChannels_;}
//! Get the number of poles //! Get the number of poles
/*! /*!
/return the number of poles \return the number of poles
*/ */
Int_t getNPoles() const {return nPoles_;} Int_t getNPoles() const {return nPoles_;}
//! Get the propagator name //! Get the propagator name
/*! /*!
/return the name of the propagator \return the name of the propagator
*/ */
TString getName() const {return name_;} TString getName() const {return name_;}
//! Get the unitary transition amplitude for the given channel //! Get the unitary transition amplitude for the given channel
/*! /*!
\param [in] s The invariant mass squared \param [in] s The invariant mass squared
\param [in] channel The index number of the channel process \param [in] channel The index number of the channel process
\return the complex amplitude T \return the complex amplitude T
*/ */
LauComplex getTransitionAmp(Double_t s, Int_t channel); LauComplex getTransitionAmp(Double_t s, Int_t channel);
//! Get the complex phase space term for the given channel and invariant mass squared //! Get the complex phase space term for the given channel and invariant mass squared
/*! /*!
\param [in] s The invariant mass squared \param [in] s The invariant mass squared
\param [in] channel The index number of the channel process \param [in] channel The index number of the channel process
\return the complex phase space term rho(channel, channel) \return the complex phase space term rho(channel, channel)
*/ */
LauComplex getPhaseSpaceTerm(Double_t s, Int_t channel); LauComplex getPhaseSpaceTerm(Double_t s, Int_t channel);
//! Get the Adler zero factor, which is set when updatePropagator is called //! Get the Adler zero factor, which is set when updatePropagator is called
/*! /*!
\return the Adler zero factor \return the Adler zero factor
*/ */
Double_t getAdlerZero() const {return adlerZeroFactor_;} Double_t getAdlerZero() const {return adlerZeroFactor_;}
//! Get the THat amplitude for the given s and channel number //! Get the THat amplitude for the given s and channel number
/*! /*!
\param [in] s The invariant mass squared \param [in] s The invariant mass squared
\param [in] channel The index number of the channel process \param [in] channel The index number of the channel process
\return the complex THat amplitude \return the complex THat amplitude
*/ */
LauComplex getTHat(Double_t s, Int_t channel); LauComplex getTHat(Double_t s, Int_t channel);
protected: protected:
//! Calculate the scattering K-matrix for the given value of s //! Calculate the scattering K-matrix for the given value of s
/*! /*!
\param [in] s the invariant mass squared \param [in] s the invariant mass squared
*/ */
void calcScattKMatrix(Double_t s); void calcScattKMatrix(Double_t s);
//! Calculate the real and imaginary part of the phase space density diagonal matrix //! Calculate the real and imaginary part of the phase space density diagonal matrix
/*! /*!
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//! Check the phase space factors that need to be used //! Check the phase space factors that need to be used
/*! /*!
\param [in] phaseSpaceInt phase space types \param [in] phaseSpaceInt phase space types
\return true of false \return true of false
*/ */
Bool_t checkPhaseSpaceType(Int_t phaseSpaceInt) const; Bool_t checkPhaseSpaceType(Int_t phaseSpaceInt) const;
//! Get the unitary transition amplitude matrix for the given kinematics //! Get the unitary transition amplitude matrix for the given kinematics
/*! /*!
\param [in] kinematics The pointer to the constant kinematics \param [in] kinematics The pointer to the constant kinematics
*/ */
void getTMatrix(const LauKinematics* kinematics); void getTMatrix(const LauKinematics* kinematics);
//! Get the unitary transition amplitude matrix for the given kinematics //! Get the unitary transition amplitude matrix for the given kinematics
/*! /*!
\param [in] s The invariant mass squared of the system \param [in] s The invariant mass squared of the system
*/ */
void getTMatrix(Double_t s); void getTMatrix(Double_t s);
//! Get the square root of the phase space matrix //! Get the square root of the phase space matrix
void getSqrtRhoMatrix(); void getSqrtRhoMatrix();
private: private:
//! Copy constructor (not implemented) //! Copy constructor (not implemented)
LauKMatrixPropagator(const LauKMatrixPropagator& rhs); LauKMatrixPropagator(const LauKMatrixPropagator& rhs);
//! Copy assignment operator (not implemented) //! Copy assignment operator (not implemented)
LauKMatrixPropagator& operator=(const LauKMatrixPropagator& rhs); LauKMatrixPropagator& operator=(const LauKMatrixPropagator& rhs);
//! Create a map for the K-matrix parameters //! Create a map for the K-matrix parameters
typedef std::map<int, std::vector<LauParameter> > KMatrixParamMap; typedef std::map<int, std::vector<LauParameter> > KMatrixParamMap;
//! Initialise and set the dimensions for the internal matrices and parameter arrays //! Initialise and set the dimensions for the internal matrices and parameter arrays
void initialiseMatrices(); void initialiseMatrices();
//! Store the (phase space) channel indices from a line in the parameter file //! Store the (phase space) channel indices from a line in the parameter file
/*! /*!
\param [in] theLine Vector of strings corresponding to the line from the parameter file \param [in] theLine Vector of strings corresponding to the line from the parameter file
*/ */
void storeChannels(const std::vector<std::string>& theLine); void storeChannels(const std::vector<std::string>& theLine);
//! Store the pole mass and couplings from a line in the parameter file //! Store the pole mass and couplings from a line in the parameter file
/*! /*!
\param [in] theLine Vector of strings corresponding to the line from the parameter file \param [in] theLine Vector of strings corresponding to the line from the parameter file
*/ */
void storePole(const std::vector<std::string>& theLine); void storePole(const std::vector<std::string>& theLine);
//! Store the scattering coefficients from a line in the parameter file //! Store the scattering coefficients from a line in the parameter file
/*! /*!
\param [in] theLine Vector of strings corresponding to the line from the parameter file \param [in] theLine Vector of strings corresponding to the line from the parameter file
*/ */
void storeScattering(const std::vector<std::string>& theLine); void storeScattering(const std::vector<std::string>& theLine);
//! Store miscelleanous parameters from a line in the parameter file //! Store miscelleanous parameters from a line in the parameter file
/*! /*!
\param [in] keyword the name of the parameter to be set \param [in] keyword the name of the parameter to be set
\param [in] parString the string containing the value of the parameter \param [in] parString the string containing the value of the parameter
*/ */
void storeParameter(const TString& keyword, const TString& parString); void storeParameter(const TString& keyword, const TString& parString);
//! String to store the propagator name //! String to store the propagator name
TString name_; TString name_;
//! Name of the input parameter file //! Name of the input parameter file
TString paramFileName_; TString paramFileName_;
//! Number to identify the DP axis in question //! Number to identify the DP axis in question
Int_t resPairAmpInt_; Int_t resPairAmpInt_;
//! Row index - 1 //! Row index - 1
Int_t index_; Int_t index_;
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TMatrixD IMatrix_; TMatrixD IMatrix_;
//! Null matrix //! Null matrix
TMatrixD zeroMatrix_; TMatrixD zeroMatrix_;
//! Real part of the square root of the phase space density diagonal matrix //! Real part of the square root of the phase space density diagonal matrix
TMatrixD ReSqrtRhoMatrix_; TMatrixD ReSqrtRhoMatrix_;
//! Imaginary part of the square root of the phase space density diagonal matrix //! Imaginary part of the square root of the phase space density diagonal matrix
TMatrixD ImSqrtRhoMatrix_; TMatrixD ImSqrtRhoMatrix_;
//! Real part of the unitary T matrix //! Real part of the unitary T matrix
TMatrixD ReTMatrix_; TMatrixD ReTMatrix_;
//! Imaginary part of the unitary T matrix //! Imaginary part of the unitary T matrix
TMatrixD ImTMatrix_; TMatrixD ImTMatrix_;
//! Number of channels //! Number of channels
Int_t nChannels_; Int_t nChannels_;
//! Number of poles //! Number of poles
Int_t nPoles_; Int_t nPoles_;
//! Vector of squared pole masses //! Vector of squared pole masses
std::vector<LauParameter> mSqPoles_; std::vector<LauParameter> mSqPoles_;
//! Array of coupling constants //! Array of coupling constants
LauParArray gCouplings_; LauParArray gCouplings_;
//! Array of scattering SVP values //! Array of scattering SVP values
LauParArray fScattering_; LauParArray fScattering_;
//! Vector of phase space types //! Vector of phase space types
std::vector<Int_t> phaseSpaceTypes_; std::vector<Int_t> phaseSpaceTypes_;
//! Vector of squared masses //! Vector of squared masses
std::vector<Double_t> mSumSq_; std::vector<Double_t> mSumSq_;
//! Vector of mass differences //! Vector of mass differences
std::vector<Double_t> mDiffSq_; std::vector<Double_t> mDiffSq_;
//! Vector of 1/(m_pole^2 - s) terms for scattering and production K-matrix formulae //! Vector of 1/(m_pole^2 - s) terms for scattering and production K-matrix formulae
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//! Multiplicative factor containing various Adler zero constants //! Multiplicative factor containing various Adler zero constants
Double_t adlerZeroFactor_; Double_t adlerZeroFactor_;
//! Tracks if all params have been set //! Tracks if all params have been set
Bool_t parametersSet_; Bool_t parametersSet_;
//! Control the output of the functions //! Control the output of the functions
Bool_t verbose_; Bool_t verbose_;
//! Control if scattering constants are channel symmetric: f_ji = f_ij //! Control if scattering constants are channel symmetric: f_ji = f_ij
Bool_t scattSymmetry_; Bool_t scattSymmetry_;
ClassDef(LauKMatrixPropagator,0) // K-matrix amplitude model ClassDef(LauKMatrixPropagator,0) // K-matrix amplitude model
}; };
#endif #endif