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Laura++  v1r1p1
A maximum likelihood fitting package for performing Dalitz-plot analysis.
LauRelBreitWignerRes.hh
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1 
2 // Copyright University of Warwick 2004 - 2013.
3 // Distributed under the Boost Software License, Version 1.0.
4 // (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5 
6 // Authors:
7 // Thomas Latham
8 // John Back
9 // Paul Harrison
10 
22 #ifndef LAU_REL_BREIT_WIGNER_RES
23 #define LAU_REL_BREIT_WIGNER_RES
24 
25 #include "TString.h"
26 
27 #include "LauAbsResonance.hh"
28 #include "LauComplex.hh"
29 
30 
32 
33  public:
35 
44  LauRelBreitWignerRes(TString resName, Double_t resMass, Double_t resWidth,
45  Int_t resSpin, Int_t resCharge, Int_t resPairAmpInt,
46  const LauDaughters* daughters);
47 
49  virtual ~LauRelBreitWignerRes();
50 
52  virtual void initialise();
53 
55 
59 
61 
66  void setBarrierRadii(Double_t resRadius, Double_t parRadius, LauAbsResonance::BarrierType type);
67 
68  protected:
70 
74  virtual LauComplex resAmp(Double_t mass, Double_t spinTerm);
75 
77 
81  Double_t calcFFactor(Double_t z);
82 
83 
84  private:
86  Double_t q0_;
88  Double_t p0_;
90  Double_t pstar0_;
92  Double_t resMassSq_;
94  Double_t mDaugSum_;
96  Double_t mDaugSumSq_;
98  Double_t mDaugDiff_;
100  Double_t mDaugDiffSq_;
102  Double_t mParentSq_;
104  Double_t mBachSq_;
105 
107  Double_t resR_;
109  Double_t parR_;
111  Double_t resRSq_;
113  Double_t parRSq_;
115  Double_t FR0_;
117  Double_t FB0_;
120 
121  ClassDef(LauRelBreitWignerRes,0) // Relativistic Breit-Wigner resonance model
122 
123 };
124 
125 #endif
Double_t resR_
Radius of the barrier for resonance decay.
void setBarrierRadii(Double_t resRadius, Double_t parRadius, LauAbsResonance::BarrierType type)
Set the form factor model and parameters.
Double_t FB0_
Value of the form factor for parent decay (at pole mass)
Double_t q0_
Momentum of the daughters in the resonance rest frame (at pole mass)
Double_t resRSq_
Square of the radius of the barrier for resonance decay.
Double_t resMassSq_
Square of the resonance mass.
Class that defines the particular 3-body decay under study.
Definition: LauDaughters.hh:33
Double_t calcFFactor(Double_t z)
Calculate the form factor for the resonance.
virtual LauAbsResonance::LauResonanceModel getResonanceModel() const
Get the resonance model type.
virtual ~LauRelBreitWignerRes()
Destructor.
virtual LauComplex resAmp(Double_t mass, Double_t spinTerm)
Complex resonant amplitude.
Double_t mDaugSum_
Sum of the two daughter masses.
LauAbsResonance::BarrierType barrierType_
Model to be used for the form factor.
Double_t FR0_
Value of the form factor for resonance decay (at pole mass)
Double_t parR_
Radius of the barrier for parent decay.
Double_t mParentSq_
Square of the parent mass.
Double_t mBachSq_
Square of the bachelor mass.
Double_t p0_
Momentum of the bachelor in the resonance rest frame (at pole mass)
File containing declaration of LauComplex class.
Double_t pstar0_
Momentum of the bachelor in the parent rest frame (at pole mass)
Class for defining the relativistic Breit-Wigner resonance model.
Double_t mDaugDiff_
Difference of the two daughter masses.
LauRelBreitWignerRes(TString resName, Double_t resMass, Double_t resWidth, Int_t resSpin, Int_t resCharge, Int_t resPairAmpInt, const LauDaughters *daughters)
Constructor.
Double_t mDaugDiffSq_
Square of the difference of the two daughter masses.
Double_t parRSq_
Square of the radius of the barrier for parent decay.
LauResonanceModel
Define the allowed resonance types.
Abstract class for defining type for resonance amplitude models (Breit-Wigner, Flatte etc...
Double_t mDaugSumSq_
Square of the sum of the two daughter masses.
File containing declaration of LauAbsResonance class.
virtual void initialise()
Initialise the model.
Class for defining a complex number.
Definition: LauComplex.hh:47
BarrierType
Define the allowed types of barrier factors.