#include <isobarHelicityAmplitude.h>

Inheritance diagram for rpwa::isobarHelicityAmplitude:

Public Member Functions
	isobarHelicityAmplitude ()
	isobarHelicityAmplitude (const isobarDecayTopologyPtr &decay)
virtual	~isobarHelicityAmplitude ()
std::string	name () const
const isobarDecayTopologyPtr &	decayTopology () const
	returns pointer to decay topology
void	setDecayTopology (const isobarDecayTopologyPtr &decay)
	sets decay topology
virtual void	init ()
	initializes amplitude; needs to be called when decay topology was changed
bool	reflectivityBasis () const
	returns whether reflectivity basis is used
bool	boseSymmetrization () const
	returns whether Bose symmetrization is used
bool	isospinSymmetrization () const
	returns whether isospin symmetrization is used
void	enableReflectivityBasis (const bool flag=true)
	en/disables use of reflectivity basis
void	enableBoseSymmetrization (const bool flag=true)
	en/disables use of Bose symmetrization
void	enableIsospinSymmetrization (const bool flag=true)
	en/disables use of isospin symmetrization
bool	doSpaceInversion () const
	returns whether parity transformation is performed on decay
bool	doReflection () const
	returns whether decay is reflected through production plane
void	enableSpaceInversion (const bool flag=true)
	en/disables parity transformation of decay
void	enableReflection (const bool flag=true)
	en/disables reflection of decay through production plane
std::complex< double >	amplitude () const
	computes amplitude
std::complex< double >	operator() () const
	computes amplitude
virtual std::ostream &	printParameters (std::ostream &out) const
	prints amplitude parameters in human-readable form
virtual std::ostream &	print (std::ostream &out) const
	prints amplitude in human-readable form

Static Public Member Functions
static TLorentzRotation	hfTransform (const TLorentzVector &daughterLv)
	constructs Lorentz-transformation to helicity RF of daughter particle
static bool	debug ()
	returns debug flag
static void	setDebug (const bool debug=true)
	sets debug flag
static TLorentzRotation	gjTransform (const TLorentzVector &beamLv, const TLorentzVector &XLv)
	constructs Lorentz-transformation to X Gottfried-Jackson frame

Protected Member Functions
void	spaceInvertDecay () const
	performs parity transformation on all decay three-momenta
void	reflectDecay () const
	performs reflection through production plane on all decay three-momenta
virtual std::complex< double >	twoBodyDecayAmplitudeSum (const isobarDecayVertexPtr &vertex, const bool topVertex=false) const
	recursive function that sums up decay amplitudes for all allowed helicitities for all vertices below the given vertex
virtual std::complex< double >	symTermAmp (const std::vector< unsigned int > &fsPartPermMap) const
	returns decay amplitude for a certain permutation of final-state particles
virtual bool	initSymTermMaps ()

Protected Attributes
isobarDecayTopologyPtr	_decay
	isobar decay topology with all external information
bool	_useReflectivityBasis
	if set, reflectivity basis is used to calculate the X decay node
bool	_boseSymmetrize
	if set, amplitudes are Bose symmetrized
bool	_isospinSymmetrize
	if set, amplitudes are isospin symmetrized
bool	_doSpaceInversion
	is set, all three-momenta of the decay particles are parity transformed (for test purposes)
bool	_doReflection
	is set, all three-momenta of the decay particles are reflected through production plane (for test purposes)
std::vector< symTermMap >	_symTermMaps
	array of factors and permutation maps for symmetrization terms

Private Member Functions
void	transformDaughters () const
	boosts Lorentz-vectors of decay daughters into frames where angular distributions are defined
std::complex< double >	twoBodyDecayAmplitude (const isobarDecayVertexPtr &vertex, const bool topVertex) const
	calculates amplitude for two-body decay a -> b + c; where b and c are stable

Static Private Attributes
static bool	_debug = false
	if set to true, debug messages are printed

Detailed Description

Definition at line 51 of file isobarHelicityAmplitude.h.

Constructor & Destructor Documentation

isobarHelicityAmplitude::isobarHelicityAmplitude ( )

Definition at line 56 of file isobarHelicityAmplitude.cc.

isobarHelicityAmplitude::isobarHelicityAmplitude ( const isobarDecayTopologyPtr & decay )

Definition at line 61 of file isobarHelicityAmplitude.cc.

isobarHelicityAmplitude::~isobarHelicityAmplitude ( )

virtual

Definition at line 66 of file isobarHelicityAmplitude.cc.

Member Function Documentation

complex< double > isobarAmplitude::amplitude ( ) const

inherited

computes amplitude

Definition at line 122 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_symTermMaps, i, and rpwa::isobarAmplitude::symTermAmp().

Referenced by main(), and rpwa::isobarAmplitude::operator()().

bool rpwa::isobarAmplitude::boseSymmetrization ( ) const

inlineinherited

returns whether Bose symmetrization is used

Definition at line 70 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_boseSymmetrize.

Referenced by rpwa::waveDescription::setAmplitude().

static bool rpwa::isobarHelicityAmplitude::debug ( )

inlinestatic

returns debug flag

Reimplemented from rpwa::isobarAmplitude.

Definition at line 63 of file isobarHelicityAmplitude.h.

References _debug.

Referenced by setDebug().

const isobarDecayTopologyPtr& rpwa::isobarAmplitude::decayTopology ( ) const

inlineinherited

returns pointer to decay topology

Definition at line 64 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_decay.

bool rpwa::isobarAmplitude::doReflection ( ) const

inlineinherited

returns whether decay is reflected through production plane

Definition at line 77 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_doReflection.

bool rpwa::isobarAmplitude::doSpaceInversion ( ) const

inlineinherited

returns whether parity transformation is performed on decay

Definition at line 76 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_doSpaceInversion.

void rpwa::isobarAmplitude::enableBoseSymmetrization ( const bool flag = true )

inlineinherited

en/disables use of Bose symmetrization

Definition at line 73 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_boseSymmetrize.

void rpwa::isobarAmplitude::enableIsospinSymmetrization ( const bool flag = true )

inlineinherited

en/disables use of isospin symmetrization

Definition at line 74 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_isospinSymmetrize.

void rpwa::isobarAmplitude::enableReflection ( const bool flag = true )

inlineinherited

en/disables reflection of decay through production plane

Definition at line 79 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_doReflection.

void rpwa::isobarAmplitude::enableReflectivityBasis ( const bool flag = true )

inlineinherited

en/disables use of reflectivity basis

Definition at line 72 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_useReflectivityBasis.

void rpwa::isobarAmplitude::enableSpaceInversion ( const bool flag = true )

inlineinherited

en/disables parity transformation of decay

Definition at line 78 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_doSpaceInversion.

TLorentzRotation isobarAmplitude::gjTransform	(	const TLorentzVector &	beamLv,
		const TLorentzVector &	XLv
	)

staticinherited

constructs Lorentz-transformation to X Gottfried-Jackson frame

Definition at line 139 of file isobarAmplitude.cc.

Referenced by main(), rpwa::isobarAmplitude::reflectDecay(), rpwa::isobarAmplitude::spaceInvertDecay(), rpwa::isobarCanonicalAmplitude::transformDaughters(), and transformDaughters().

TLorentzRotation isobarHelicityAmplitude::hfTransform ( const TLorentzVector & daughterLv )

static

constructs Lorentz-transformation to helicity RF of daughter particle

Definition at line 71 of file isobarHelicityAmplitude.cc.

Referenced by main(), and transformDaughters().

void isobarAmplitude::init ( )

virtualinherited

initializes amplitude; needs to be called when decay topology was changed

Definition at line 102 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_decay, rpwa::isobarAmplitude::_symTermMaps, i, and rpwa::isobarAmplitude::initSymTermMaps().

bool isobarAmplitude::initSymTermMaps ( )

protectedvirtualinherited

Definition at line 281 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_boseSymmetrize, rpwa::isobarAmplitude::_debug, rpwa::isobarAmplitude::_decay, rpwa::isobarAmplitude::_isospinSymmetrize, rpwa::isobarAmplitude::_symTermMaps, and i.

Referenced by rpwa::isobarAmplitude::init().

bool rpwa::isobarAmplitude::isospinSymmetrization ( ) const

inlineinherited

returns whether isospin symmetrization is used

Definition at line 71 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_isospinSymmetrize.

Referenced by rpwa::waveDescription::setAmplitude().

std::string rpwa::isobarHelicityAmplitude::name ( ) const

inlinevirtual

Reimplemented from rpwa::isobarAmplitude.

Definition at line 61 of file isobarHelicityAmplitude.h.

std::complex<double> rpwa::isobarAmplitude::operator() ( ) const

inlineinherited

computes amplitude

Definition at line 85 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::amplitude().

ostream & isobarAmplitude::print ( std::ostream & out ) const

virtualinherited

prints amplitude in human-readable form

Definition at line 398 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_decay, and rpwa::isobarAmplitude::printParameters().

Referenced by rpwa::operator<<().

ostream & isobarAmplitude::printParameters ( std::ostream & out ) const

virtualinherited

prints amplitude parameters in human-readable form

Definition at line 385 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_boseSymmetrize, rpwa::isobarAmplitude::_doReflection, rpwa::isobarAmplitude::_doSpaceInversion, rpwa::isobarAmplitude::_isospinSymmetrize, rpwa::isobarAmplitude::_useReflectivityBasis, and rpwa::isobarAmplitude::name().

Referenced by rpwa::isobarAmplitude::print().

void isobarAmplitude::reflectDecay ( ) const

protectedinherited

performs reflection through production plane on all decay three-momenta

Definition at line 188 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_debug, rpwa::isobarAmplitude::_decay, rpwa::isobarAmplitude::gjTransform(), and i.

Referenced by rpwa::isobarCanonicalAmplitude::transformDaughters(), and transformDaughters().

bool rpwa::isobarAmplitude::reflectivityBasis ( ) const

inlineinherited

returns whether reflectivity basis is used

Definition at line 69 of file isobarAmplitude.h.

References rpwa::isobarAmplitude::_useReflectivityBasis.

Referenced by rpwa::waveDescription::setAmplitude().

static void rpwa::isobarHelicityAmplitude::setDebug ( const bool debug = true )

inlinestatic

sets debug flag

Reimplemented from rpwa::isobarAmplitude.

Definition at line 64 of file isobarHelicityAmplitude.h.

References _debug, and debug().

void isobarAmplitude::setDecayTopology ( const isobarDecayTopologyPtr & decay )

inherited

sets decay topology

Definition at line 83 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_decay.

Referenced by rpwa::isobarAmplitude::isobarAmplitude().

void isobarAmplitude::spaceInvertDecay ( ) const

protectedinherited

performs parity transformation on all decay three-momenta

Definition at line 167 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_debug, rpwa::isobarAmplitude::_decay, rpwa::isobarAmplitude::gjTransform(), and i.

Referenced by rpwa::isobarCanonicalAmplitude::transformDaughters(), and transformDaughters().

complex< double > isobarAmplitude::symTermAmp ( const std::vector< unsigned int > & fsPartPermMap ) const

protectedvirtualinherited

returns decay amplitude for a certain permutation of final-state particles

Definition at line 265 of file isobarAmplitude.cc.

References rpwa::isobarAmplitude::_decay, rpwa::isobarAmplitude::transformDaughters(), and rpwa::isobarAmplitude::twoBodyDecayAmplitudeSum().

Referenced by rpwa::isobarAmplitude::amplitude().

void isobarHelicityAmplitude::transformDaughters ( ) const

private

boosts Lorentz-vectors of decay daughters into frames where angular distributions are defined

Definition at line 94 of file isobarHelicityAmplitude.cc.

References _debug, rpwa::isobarAmplitude::_decay, rpwa::isobarAmplitude::_doReflection, rpwa::isobarAmplitude::_doSpaceInversion, rpwa::isobarAmplitude::gjTransform(), hfTransform(), i, rpwa::isobarAmplitude::reflectDecay(), and rpwa::isobarAmplitude::spaceInvertDecay().

complex< double > isobarHelicityAmplitude::twoBodyDecayAmplitude	(	const isobarDecayVertexPtr &	vertex,
		const bool	topVertex
	)		const

private

calculates amplitude for two-body decay a -> b + c; where b and c are stable

Definition at line 145 of file isobarHelicityAmplitude.cc.

References _debug, rpwa::isobarAmplitude::_useReflectivityBasis, Lambda, lambda(), and q().

complex< double > isobarAmplitude::twoBodyDecayAmplitudeSum	(	const isobarDecayVertexPtr &	vertex,
		const bool	topVertex = `false`
	)		const

protectedvirtualinherited

recursive function that sums up decay amplitudes for all allowed helicitities for all vertices below the given vertex

Definition at line 217 of file isobarAmplitude.cc.

Referenced by rpwa::isobarAmplitude::symTermAmp().

Member Data Documentation

bool rpwa::isobarAmplitude::_boseSymmetrize

protectedinherited

if set, amplitudes are Bose symmetrized

Definition at line 116 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::boseSymmetrization(), rpwa::isobarAmplitude::enableBoseSymmetrization(), rpwa::isobarAmplitude::initSymTermMaps(), and rpwa::isobarAmplitude::printParameters().

bool isobarHelicityAmplitude::_debug = false

staticprivate

if set to true, debug messages are printed

Definition at line 75 of file isobarHelicityAmplitude.h.

Referenced by debug(), setDebug(), transformDaughters(), and twoBodyDecayAmplitude().

isobarDecayTopologyPtr rpwa::isobarAmplitude::_decay

protectedinherited

isobar decay topology with all external information

Definition at line 114 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::decayTopology(), rpwa::isobarAmplitude::init(), rpwa::isobarAmplitude::initSymTermMaps(), rpwa::isobarAmplitude::print(), rpwa::isobarAmplitude::reflectDecay(), rpwa::isobarAmplitude::setDecayTopology(), rpwa::isobarAmplitude::spaceInvertDecay(), rpwa::isobarAmplitude::symTermAmp(), rpwa::isobarCanonicalAmplitude::transformDaughters(), and transformDaughters().

bool rpwa::isobarAmplitude::_doReflection

protectedinherited

is set, all three-momenta of the decay particles are reflected through production plane (for test purposes)

Definition at line 119 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::doReflection(), rpwa::isobarAmplitude::enableReflection(), rpwa::isobarAmplitude::printParameters(), rpwa::isobarCanonicalAmplitude::transformDaughters(), and transformDaughters().

bool rpwa::isobarAmplitude::_doSpaceInversion

protectedinherited

is set, all three-momenta of the decay particles are parity transformed (for test purposes)

Definition at line 118 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::doSpaceInversion(), rpwa::isobarAmplitude::enableSpaceInversion(), rpwa::isobarAmplitude::printParameters(), rpwa::isobarCanonicalAmplitude::transformDaughters(), and transformDaughters().

bool rpwa::isobarAmplitude::_isospinSymmetrize

protectedinherited

if set, amplitudes are isospin symmetrized

Definition at line 117 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::enableIsospinSymmetrization(), rpwa::isobarAmplitude::initSymTermMaps(), rpwa::isobarAmplitude::isospinSymmetrization(), and rpwa::isobarAmplitude::printParameters().

std::vector<symTermMap> rpwa::isobarAmplitude::_symTermMaps

protectedinherited

array of factors and permutation maps for symmetrization terms

Definition at line 120 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::amplitude(), rpwa::isobarAmplitude::init(), and rpwa::isobarAmplitude::initSymTermMaps().

bool rpwa::isobarAmplitude::_useReflectivityBasis

protectedinherited

if set, reflectivity basis is used to calculate the X decay node

Definition at line 115 of file isobarAmplitude.h.

Referenced by rpwa::isobarAmplitude::enableReflectivityBasis(), rpwa::isobarAmplitude::printParameters(), rpwa::isobarAmplitude::reflectivityBasis(), rpwa::isobarCanonicalAmplitude::twoBodyDecayAmplitude(), and twoBodyDecayAmplitude().

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation