Detailed Description

Lineshape that implements the Dalitz plot distribution for decays \( \eta \rightarrow \pi^{+}\pi^{-}\pi^{0} \), parameterised in terms of the kinetic energy \(T_x\) of each decay product in the rest frame of the \(\eta\) meson. By convention, the third particle is neutral pion. The amplitude is given by:

\[ \mathcal{A}(T_1, T_2, T_3) = \sqrt{ 1 - 1.07\left( \frac{3 T_3}{T_1 + T_2 + T_3} -1 \right) } \]

Multiplied by an arbitrary gaussian lineshape to account for the mass distribution in \(s_{\pi^{+}\pi^{-}\pi^{0}}\).

Definition at line 389 of file Lineshapes.h.

Public Member Functions
	EtaDalitz ()

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::EtaDalitz:

Constructor & Destructor Documentation

◆ EtaDalitz()

AmpGen::Lineshape::EtaDalitz::EtaDalitz ( )

inline

Definition at line 389 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::EtaDalitz::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::EtaDalitz::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:

/github/workspace/AmpGen/Lineshapes.h