laura is hosted by Hepforge, IPPP Durham
Laura++  v3r4
A maximum likelihood fitting package for performing Dalitz-plot analysis.

Class for defining the Sigma resonance model. More...

#include <LauSigmaRes.hh>

Inheritance diagram for LauSigmaRes:
LauAbsResonance

Public Member Functions

 LauSigmaRes (LauResonanceInfo *resInfo, const Int_t resPairAmpInt, const LauDaughters *daughters)
 Constructor. More...
 
virtual ~LauSigmaRes ()
 Destructor. More...
 
virtual void initialise ()
 Initialise the model. More...
 
virtual
LauAbsResonance::LauResonanceModel 
getResonanceModel () const
 Get the resonance model type. 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...
 
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...
 
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

void setB1Value (const Double_t b1)
 Set the b1 parameter. More...
 
void setB2Value (const Double_t b2)
 Set the b2 parameter. More...
 
void setAValue (const Double_t A)
 Set the A parameter. More...
 
void setM0Value (const Double_t m0)
 Set the m0 parameter. More...
 
Double_t getB1Value () const
 Get the b1 parameter value. More...
 
Double_t getB2Value () const
 Get the b2 parameter value. More...
 
Double_t getAValue () const
 Get the A parameter value. More...
 
Double_t getM0Value () const
 Get the m0 parameter value. More...
 
Bool_t fixB1Value () const
 Fix the b1 parameter value. More...
 
Bool_t fixB2Value () const
 Fix the b2 parameter value. More...
 
Bool_t fixAValue () const
 Fix the A parameter value. More...
 
Bool_t fixM0Value () const
 Fix the m0 parameter value. More...
 
virtual LauComplex resAmp (Double_t mass, Double_t spinTerm)
 Complex resonant ampltiude. More...
 
void checkDaughterTypes () const
 Check that both daughters are the same type of particle. 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

 LauSigmaRes (const LauSigmaRes &rhs)
 Copy constructor (not implemented) More...
 
LauSigmaResoperator= (const LauSigmaRes &rhs)
 Copy assignment operator (not implemented) More...
 

Private Attributes

Double_t mPiSq4_
 Defined as 4*mPi*mPi. More...
 
Double_t sAdler_
 Defined as 0.5*mPi*mPi. More...
 
LauParameterb1_
 Factor from BES data. More...
 
LauParameterb2_
 Factor from BES data. More...
 
LauParametera_
 Factor from BES data. More...
 
LauParameterm0_
 Factor from BES data. 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,
  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 Sigma resonance model.

Class for defining the Sigma resonance model. Formulae and data values from Phys.Lett.B 572, 1 (2003) - author D.V.Bugg

Definition at line 45 of file LauSigmaRes.hh.

Constructor & Destructor Documentation

LauSigmaRes::LauSigmaRes ( 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 38 of file LauSigmaRes.cc.

LauSigmaRes::~LauSigmaRes ( )
virtual

Destructor.

Definition at line 96 of file LauSigmaRes.cc.

LauSigmaRes::LauSigmaRes ( const LauSigmaRes rhs)
private

Copy constructor (not implemented)

Member Function Documentation

void LauSigmaRes::checkDaughterTypes ( ) const
protected

Check that both daughters are the same type of particle.

Definition at line 112 of file LauSigmaRes.cc.

Bool_t LauSigmaRes::fixAValue ( ) const
inlineprotected

Fix the A parameter value.

Returns
kTRUE if the A parameter is fixed, kFALSE otherwise

Definition at line 159 of file LauSigmaRes.hh.

Bool_t LauSigmaRes::fixB1Value ( ) const
inlineprotected

Fix the b1 parameter value.

Returns
kTRUE if the b1 parameter is fixed, kFALSE otherwise

Definition at line 147 of file LauSigmaRes.hh.

Bool_t LauSigmaRes::fixB2Value ( ) const
inlineprotected

Fix the b2 parameter value.

Returns
kTRUE if the b2 parameter is fixed, kFALSE otherwise

Definition at line 153 of file LauSigmaRes.hh.

Bool_t LauSigmaRes::fixM0Value ( ) const
inlineprotected

Fix the m0 parameter value.

Returns
kTRUE if the m0 parameter is fixed, kFALSE otherwise

Definition at line 165 of file LauSigmaRes.hh.

void LauSigmaRes::floatResonanceParameter ( const TString &  name)
virtual

Allow the various parameters to float in the fit.

Parameters
[in]namethe name of the parameter to be floated

Reimplemented from LauAbsResonance.

Definition at line 228 of file LauSigmaRes.cc.

Double_t LauSigmaRes::getAValue ( ) const
inlineprotected

Get the A parameter value.

Returns
value of the A parameter

Definition at line 135 of file LauSigmaRes.hh.

Double_t LauSigmaRes::getB1Value ( ) const
inlineprotected

Get the b1 parameter value.

Returns
value of the b1 parameter

Definition at line 123 of file LauSigmaRes.hh.

Double_t LauSigmaRes::getB2Value ( ) const
inlineprotected

Get the b2 parameter value.

Returns
value of the b2 parameter

Definition at line 129 of file LauSigmaRes.hh.

const std::vector< LauParameter * > & LauSigmaRes::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 181 of file LauSigmaRes.cc.

Double_t LauSigmaRes::getM0Value ( ) const
inlineprotected

Get the m0 parameter value.

Returns
value of the m0 parameter

Definition at line 141 of file LauSigmaRes.hh.

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

Get the resonance model type.

Returns
the resonance model type

Implements LauAbsResonance.

Definition at line 66 of file LauSigmaRes.hh.

LauParameter * LauSigmaRes::getResonanceParameter ( const TString &  name)
virtual

Access the given resonance parameter.

Parameters
[in]namethe name of the parameter
Returns
the corresponding parameter

Reimplemented from LauAbsResonance.

Definition at line 263 of file LauSigmaRes.cc.

void LauSigmaRes::initialise ( )
virtual

Initialise the model.

Implements LauAbsResonance.

Definition at line 100 of file LauSigmaRes.cc.

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

Copy assignment operator (not implemented)

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

Complex resonant ampltiude.

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

Implements LauAbsResonance.

Definition at line 132 of file LauSigmaRes.cc.

void LauSigmaRes::setAValue ( const Double_t  A)
protected

Set the A parameter.

Parameters
[in]Anew value for A parameter

Definition at line 293 of file LauSigmaRes.cc.

void LauSigmaRes::setB1Value ( const Double_t  b1)
protected

Set the b1 parameter.

Parameters
[in]b1new value for b1 parameter

Definition at line 279 of file LauSigmaRes.cc.

void LauSigmaRes::setB2Value ( const Double_t  b2)
protected

Set the b2 parameter.

Parameters
[in]b2new value for b2 parameter

Definition at line 286 of file LauSigmaRes.cc.

void LauSigmaRes::setM0Value ( const Double_t  m0)
protected

Set the m0 parameter.

Parameters
[in]m0new value for m0 parameter

Definition at line 300 of file LauSigmaRes.cc.

void LauSigmaRes::setResonanceParameter ( const TString &  name,
const Double_t  value 
)
virtual

Set value of the various parameters.

Parameters
[in]namethe name of the parameter to be changed
[in]valuethe new parameter value

Reimplemented from LauAbsResonance.

Definition at line 204 of file LauSigmaRes.cc.

Member Data Documentation

LauParameter* LauSigmaRes::a_
private

Factor from BES data.

Definition at line 194 of file LauSigmaRes.hh.

LauParameter* LauSigmaRes::b1_
private

Factor from BES data.

Definition at line 190 of file LauSigmaRes.hh.

LauParameter* LauSigmaRes::b2_
private

Factor from BES data.

Definition at line 192 of file LauSigmaRes.hh.

LauParameter* LauSigmaRes::m0_
private

Factor from BES data.

Definition at line 196 of file LauSigmaRes.hh.

Double_t LauSigmaRes::mPiSq4_
private

Defined as 4*mPi*mPi.

Definition at line 185 of file LauSigmaRes.hh.

Double_t LauSigmaRes::sAdler_
private

Defined as 0.5*mPi*mPi.

Definition at line 187 of file LauSigmaRes.hh.


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