AmpGen 2.1
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Public Member Functions | List of all members
AmpGen::Lineshape::SBW Class Referenceabstract
Lineshapes

Detailed Description

Basic Breit-Wigner lineshape with a fixed width and without a form factor.

\[ \mathcal{A}(s) = \frac{ k(m,\Gamma_0) }{ m^2 - s - i m \Gamma_0 }, \]

The parameters of the lineshape are tabulated below

Parameter User name Description
\(m\) particleName_mass Breit-Wigner mass, defined as energy at which the self-energy of the resonance is purely imaginary (defaults to value in PDG)
\(\Gamma_0\) particleName_width Breit-Wigner width, defined as the width of resonance at the Breit-Wigner mass

Definition at line 153 of file Lineshapes.h.

Public Member Functions

 SBW ()
 
AmpGen::Expression get (const AmpGen::Expression &s, const AmpGen::Expression &s1, const AmpGen::Expression &s2, const std::string &particleName, const unsigned int &L, const std::string &lineshapeModifier, AmpGen::DebugSymbols *dbexpressions=0) const override
 
AmpGen::Expression get (const AmpGen::Particle &p, const std::string &lineshapeModifier, AmpGen::DebugSymbols *dbexpressions=nullptr) const override
 
virtual Expression get (const Expression &s, const Expression &s1, const Expression &s2, const std::string &particleName, const unsigned &L, const std::string &lineshapeModifier, DebugSymbols *dbexpressions=nullptr) const =0
 
Base * create ()
 
Inheritance diagram for AmpGen::Lineshape::SBW:
AmpGen::Lineshape::Base

Constructor & Destructor Documentation

◆ SBW()

AmpGen::Lineshape::SBW::SBW ( )
inline

Definition at line 153 of file Lineshapes.h.

Member Function Documentation

◆ create()

Base * AmpGen::Lineshape::Base::create ( )
inlineinherited

Definition at line 98 of file Lineshapes.h.

◆ get() [1/3]

virtual Expression AmpGen::Lineshape::Base::get ( const Expression & s,
const Expression & s1,
const Expression & s2,
const std::string & particleName,
const unsigned & L,
const std::string & lineshapeModifier,
DebugSymbols * dbexpressions = nullptr ) const
pure virtualinherited

◆ get() [2/3]

AmpGen::Expression AmpGen::Lineshape::SBW::get ( const AmpGen::Expression & s,
const AmpGen::Expression & s1,
const AmpGen::Expression & s2,
const std::string & particleName,
const unsigned int & L,
const std::string & lineshapeModifier,
AmpGen::DebugSymbols * dbexpressions = 0 ) const
override

◆ get() [3/3]

AmpGen::Expression AmpGen::Lineshape::SBW::get ( const AmpGen::Particle & p,
const std::string & lineshapeModifier,
AmpGen::DebugSymbols * dbexpressions = nullptr ) const
overridevirtual

Implements AmpGen::Lineshape::Base.

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