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Laura++  v3r5
A maximum likelihood fitting package for performing Dalitz-plot analysis.

Class for defining the relativistic Breit-Wigner resonance model. More...

#include <LauRelBreitWignerRes.hh>

Inheritance diagram for LauRelBreitWignerRes:
LauAbsResonance

Public Member Functions

 LauRelBreitWignerRes (LauResonanceInfo *resInfo, const Int_t resPairAmpInt, const LauDaughters *daughters)
 Constructor. More...
 
virtual ~LauRelBreitWignerRes ()
 Destructor. More...
 
virtual void initialise ()
 Initialise the model. More...
 
virtual
LauAbsResonance::LauResonanceModel 
getResonanceModel () const
 Get the resonance model type. More...
 
virtual const std::vector
< LauParameter * > & 
getFloatingParameters ()
 Retrieve the resonance parameters, e.g. so that they can be loaded into a fit. More...
 
- Public Member Functions inherited from LauAbsResonance
 LauAbsResonance (LauResonanceInfo *resInfo, const Int_t resPairAmpInt, const LauDaughters *daughters)
 Constructor (for use by standard resonances) More...
 
 LauAbsResonance (const TString &resName, const Int_t resPairAmpInt, const LauDaughters *daughters)
 Constructor (for use by K-matrix components) More...
 
virtual ~LauAbsResonance ()
 Destructor. More...
 
virtual LauComplex amplitude (const LauKinematics *kinematics)
 Calculate the complex amplitude. More...
 
LauSpinType getSpinType () const
 Get the spin type. More...
 
const TString & getResonanceName () const
 Get the name of the resonance. More...
 
const TString & getSanitisedName () const
 Get the name of the resonance. More...
 
Int_t getPairInt () const
 Get the integer to identify which DP axis the resonance belongs to. More...
 
Int_t getSpin () const
 Get the spin of the resonance. More...
 
Int_t getCharge () const
 Get the charge of the resonance. More...
 
Double_t getMass () const
 Get the mass of the resonance. More...
 
Double_t getWidth () const
 Get the width of the resonance. More...
 
LauParametergetMassPar ()
 Get the mass parameter of the resonance. More...
 
LauParametergetWidthPar ()
 Get the width parameter of the resonance. More...
 
virtual Bool_t preSymmetrised () const
 Is the amplitude pre-symmetrised? More...
 
Bool_t flipHelicity () const
 Get the helicity flip flag. More...
 
void flipHelicity (const Bool_t boolean)
 Set the helicity flip flag. More...
 
Bool_t ignoreMomenta () const
 Get the ignore momenta flag. More...
 
void ignoreMomenta (const Bool_t boolean)
 Set the ignore momenta flag. More...
 
Bool_t ignoreSpin () const
 Get the ignore spin flag. More...
 
void ignoreSpin (const Bool_t boolean)
 Set the ignore spin flag. More...
 
Bool_t ignoreBarrierScaling () const
 Get the ignore barrier factor scaling flag. More...
 
void ignoreBarrierScaling (const Bool_t boolean)
 Set the ignore barrier factor scaling flag. More...
 
void changeResonance (const Double_t newMass, const Double_t newWidth, const Int_t newSpin)
 Allow the mass, width and spin of the resonance to be changed. More...
 
void changeBWBarrierRadii (const Double_t resRadius, const Double_t parRadius)
 Allow the Blatt-Weisskopf radius for the resonance and parent factors to be changed. More...
 
virtual void setResonanceParameter (const TString &name, const Double_t value)
 Set value of the various parameters. More...
 
virtual void floatResonanceParameter (const TString &name)
 Allow the various parameters to float in the fit. More...
 
virtual LauParametergetResonanceParameter (const TString &name)
 Access the given resonance parameter. More...
 
void fixMass (const Bool_t parFixed)
 Fix or release the resonance mass. More...
 
void fixWidth (const Bool_t parFixed)
 Fix or release the resonance width. More...
 
Bool_t fixMass () const
 Get the status of resonance mass (fixed or released) More...
 
Bool_t fixWidth () const
 Get the status of resonance width (fixed or released) More...
 
void setSpinType (const LauSpinType spinType)
 Set the spin formalism to be used. More...
 
void setBarrierRadii (LauBlattWeisskopfFactor *resFactor, LauBlattWeisskopfFactor *parFactor)
 Set the form factor model and parameters. More...
 
void fixBarrierRadii (const Bool_t fixResRadius, const Bool_t fixParRadius)
 Fix or release the Blatt-Weisskopf barrier radii. More...
 
Bool_t fixResRadius () const
 Get the status of resonance barrier radius (fixed or released) More...
 
Bool_t fixParRadius () const
 Get the status of parent barrier radius (fixed or released) More...
 
Double_t getResRadius () const
 Get the radius of the resonance barrier factor. More...
 
Double_t getParRadius () const
 Get the radius of the parent barrier factor. More...
 

Protected Member Functions

virtual LauComplex resAmp (Double_t mass, Double_t spinTerm)
 Complex resonant amplitude. More...
 
Double_t calcFFactor (Double_t z)
 Calculate the form factor for the resonance. More...
 
- Protected Member Functions inherited from LauAbsResonance
TString getNameParent () const
 Get the name of the parent particle. More...
 
TString getNameDaug1 () const
 Get the name of the first daughter of the resonance. More...
 
TString getNameDaug2 () const
 Get the name of the second daughter of the resonance. More...
 
TString getNameBachelor () const
 Get the name of the daughter that does not originate form the resonance. More...
 
Double_t getMassParent () const
 Get the parent particle mass. More...
 
Double_t getMassDaug1 () const
 Get the mass of daughter 1. More...
 
Double_t getMassDaug2 () const
 Get the mass of daughter 2. More...
 
Double_t getMassBachelor () const
 Get the mass of the bachelor daughter. More...
 
Int_t getChargeParent () const
 Get the Charge of the parent particle. More...
 
Int_t getChargeDaug1 () const
 Get the charge of daughter 1. More...
 
Int_t getChargeDaug2 () const
 Get the charge of daughter 2. More...
 
Int_t getChargeBachelor () const
 Get the charge of the bachelor daughter. More...
 
Double_t getQ () const
 Get the current value of the daughter momentum in the resonance rest frame. More...
 
Double_t getP () const
 Get the current value of the bachelor momentum in the resonance rest frame. More...
 
Double_t getPstar () const
 Get the current value of the bachelor momentum in the parent rest frame. More...
 
Double_t getCovFactor () const
 Get the current value of the full spin-dependent covariant factor. More...
 
LauBlattWeisskopfFactorgetParBWFactor ()
 Get the centrifugal barrier for the parent decay. More...
 
const LauBlattWeisskopfFactorgetParBWFactor () const
 
LauBlattWeisskopfFactorgetResBWFactor ()
 Get the centrifugal barrier for the resonance decay. More...
 
const LauBlattWeisskopfFactorgetResBWFactor () const
 
LauResonanceInfogetResInfo () const
 Access the resonance info object. More...
 
const LauDaughtersgetDaughters () const
 Access the daughters object. More...
 
Double_t calcZemachSpinFactor (const Double_t pProd) const
 Calculate the amplitude spin term using the Zemach tensor formalism. More...
 
Double_t calcCovSpinFactor (const Double_t pProd)
 Calculate the amplitude spin term using the covariant tensor formalism. More...
 
void calcCovFactor (const Double_t erm)
 Calculate the spin-dependent covariant factor. More...
 
Double_t calcLegendrePoly () const
 Calculate the Legendre polynomial for the spin factor. More...
 
Double_t calcLegendrePoly (const Double_t cosHel)
 Calculate the Legendre polynomial for the spin factor (specifying the cosHel value) More...
 
void clearFloatingParameters ()
 Clear list of floating parameters. More...
 
void addFloatingParameter (LauParameter *param)
 Add parameter to the list of floating parameters. More...
 
std::vector< LauParameter * > & getParameters ()
 Access the list of floating parameters. More...
 

Private Member Functions

 LauRelBreitWignerRes (const LauRelBreitWignerRes &rhs)
 Copy constructor (not implemented) More...
 
LauRelBreitWignerResoperator= (const LauRelBreitWignerRes &rhs)
 Copy assignment operator (not implemented) More...
 

Private Attributes

Double_t q0_
 Momentum of the daughters in the resonance rest frame (at pole mass) More...
 
Double_t p0_
 Momentum of the bachelor in the resonance rest frame (at pole mass) More...
 
Double_t pstar0_
 Momentum of the bachelor in the parent rest frame (at pole mass) More...
 
Double_t erm0_
 Covariant factor (at pole mass) More...
 
Double_t resMass_
 The resonance mass. More...
 
Double_t resMassSq_
 Square of the resonance mass. More...
 
Double_t resWidth_
 The resonance width. More...
 
Double_t resRadius_
 The resonance barrier radius. More...
 
Double_t parRadius_
 The parent barrier radius. More...
 
Double_t mDaugSum_
 Sum of the two daughter masses. More...
 
Double_t mDaugSumSq_
 Square of the sum of the two daughter masses. More...
 
Double_t mDaugDiff_
 Difference of the two daughter masses. More...
 
Double_t mDaugDiffSq_
 Square of the difference of the two daughter masses. More...
 
Double_t mParentSq_
 Square of the parent mass. More...
 
Double_t mBachSq_
 Square of the bachelor mass. More...
 
Double_t FR0_
 Value of the form factor for resonance decay (at pole mass) More...
 
Double_t FP0_
 Value of the form factor for parent decay (at pole mass) More...
 

Additional Inherited Members

- Public Types inherited from LauAbsResonance
enum  LauResonanceModel {
  BW, RelBW, GS, Flatte,
  Sigma, Kappa, Dabba, LASS,
  LASS_BW, LASS_NR, EFKLLM, KMatrix,
  FlatNR, NRModel, BelleNR, PowerLawNR,
  BelleSymNR, BelleSymNRNoInter, TaylorNR, PolNR,
  Pole, PolarFFNR, PolarFFSymNR, PolarFFSymNRNoInter,
  Rescattering, Rescattering2, RescatteringNoInter, MIPW_MagPhase,
  MIPW_RealImag, GaussIncoh, RhoOmegaMix_GS, RhoOmegaMix_RBW,
  RhoOmegaMix_GS_1, RhoOmegaMix_RBW_1
}
 Define the allowed resonance types. More...
 
enum  LauSpinType { Zemach_P, Zemach_Pstar, Covariant, Legendre }
 Define the allowed spin formalisms. More...
 
- Static Public Member Functions inherited from LauAbsResonance
static bool isIncoherentModel (LauResonanceModel model)
 Is the resonance model incoherent? More...
 

Detailed Description

Class for defining the relativistic Breit-Wigner resonance model.

Class for defining the relativistic Breit-Wigner resonance model, which includes the use of Blatt-Weisskopf barrier factors.

Definition at line 45 of file LauRelBreitWignerRes.hh.

Constructor & Destructor Documentation

LauRelBreitWignerRes::LauRelBreitWignerRes ( LauResonanceInfo resInfo,
const Int_t  resPairAmpInt,
const LauDaughters daughters 
)

Constructor.

Parameters
[in]resInfothe object containing information on the resonance name, mass, width, spin, charge, etc.
[in]resPairAmpIntthe number of the daughter not produced by the resonance
[in]daughtersthe daughter particles

Definition at line 37 of file LauRelBreitWignerRes.cc.

LauRelBreitWignerRes::~LauRelBreitWignerRes ( )
virtual

Destructor.

Definition at line 59 of file LauRelBreitWignerRes.cc.

LauRelBreitWignerRes::LauRelBreitWignerRes ( const LauRelBreitWignerRes rhs)
private

Copy constructor (not implemented)

Member Function Documentation

Double_t LauRelBreitWignerRes::calcFFactor ( Double_t  z)
protected

Calculate the form factor for the resonance.

Parameters
[in]zparticle momentum multipled by the barrier radius
Returns
value of the form factor
const std::vector< LauParameter * > & LauRelBreitWignerRes::getFloatingParameters ( )
virtual

Retrieve the resonance parameters, e.g. so that they can be loaded into a fit.

Returns
floating parameters of the resonance

Reimplemented from LauAbsResonance.

Definition at line 277 of file LauRelBreitWignerRes.cc.

virtual LauAbsResonance::LauResonanceModel LauRelBreitWignerRes::getResonanceModel ( ) const
inlinevirtual

Get the resonance model type.

Returns
the resonance model type

Implements LauAbsResonance.

Definition at line 66 of file LauRelBreitWignerRes.hh.

void LauRelBreitWignerRes::initialise ( )
virtual

Initialise the model.

Implements LauAbsResonance.

Definition at line 63 of file LauRelBreitWignerRes.cc.

LauRelBreitWignerRes& LauRelBreitWignerRes::operator= ( const LauRelBreitWignerRes rhs)
private

Copy assignment operator (not implemented)

LauComplex LauRelBreitWignerRes::resAmp ( Double_t  mass,
Double_t  spinTerm 
)
protectedvirtual

Complex resonant amplitude.

Parameters
[in]massappropriate invariant mass for the resonance
[in]spinTermspin term

Implements LauAbsResonance.

Definition at line 164 of file LauRelBreitWignerRes.cc.

Member Data Documentation

Double_t LauRelBreitWignerRes::erm0_
private

Covariant factor (at pole mass)

Definition at line 104 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::FP0_
private

Value of the form factor for parent decay (at pole mass)

Definition at line 130 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::FR0_
private

Value of the form factor for resonance decay (at pole mass)

Definition at line 128 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::mBachSq_
private

Square of the bachelor mass.

Definition at line 126 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::mDaugDiff_
private

Difference of the two daughter masses.

Definition at line 120 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::mDaugDiffSq_
private

Square of the difference of the two daughter masses.

Definition at line 122 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::mDaugSum_
private

Sum of the two daughter masses.

Definition at line 116 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::mDaugSumSq_
private

Square of the sum of the two daughter masses.

Definition at line 118 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::mParentSq_
private

Square of the parent mass.

Definition at line 124 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::p0_
private

Momentum of the bachelor in the resonance rest frame (at pole mass)

Definition at line 100 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::parRadius_
private

The parent barrier radius.

Definition at line 114 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::pstar0_
private

Momentum of the bachelor in the parent rest frame (at pole mass)

Definition at line 102 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::q0_
private

Momentum of the daughters in the resonance rest frame (at pole mass)

Definition at line 98 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::resMass_
private

The resonance mass.

Definition at line 106 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::resMassSq_
private

Square of the resonance mass.

Definition at line 108 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::resRadius_
private

The resonance barrier radius.

Definition at line 112 of file LauRelBreitWignerRes.hh.

Double_t LauRelBreitWignerRes::resWidth_
private

The resonance width.

Definition at line 110 of file LauRelBreitWignerRes.hh.


The documentation for this class was generated from the following files: