V0 finder module. More...

#include <V0FinderModule.h>

Inheritance diagram for V0FinderModule:

Collaboration diagram for V0FinderModule:

[legend]

Public Types
enum	EModulePropFlags { c_Input = 1 , c_Output = 2 , c_ParallelProcessingCertified = 4 , c_HistogramManager = 8 , c_InternalSerializer = 16 , c_TerminateInAllProcesses = 32 , c_DontCollectStatistics = 64 }
	Each module can be tagged with property flags, which indicate certain features of the module. More...

typedef ModuleCondition::EAfterConditionPath	EAfterConditionPath
	Forward the EAfterConditionPath definition from the ModuleCondition.

Public Member Functions
	V0FinderModule ()
	Setting of module description, parameters.

	~V0FinderModule () override=default
	Acknowledgement of destructor.

void	initialize () override
	Registration of StoreArrays, Relations, check proper GenFit setup.

void	event () override
	Creates Belle2::V0s from Belle2::Tracks as described in the class documentation.

void	terminate () override
	Prints status summary.

virtual std::vector< std::string >	getFileNames (bool outputFiles)
	Return a list of output filenames for this modules. More...

virtual void	beginRun ()
	Called when entering a new run. More...

virtual void	endRun ()
	This method is called if the current run ends. More...

const std::string &	getName () const
	Returns the name of the module. More...

const std::string &	getType () const
	Returns the type of the module (i.e. More...

const std::string &	getPackage () const
	Returns the package this module is in.

const std::string &	getDescription () const
	Returns the description of the module.

void	setName (const std::string &name)
	Set the name of the module. More...

void	setPropertyFlags (unsigned int propertyFlags)
	Sets the flags for the module properties. More...

LogConfig &	getLogConfig ()
	Returns the log system configuration.

void	setLogConfig (const LogConfig &logConfig)
	Set the log system configuration.

void	setLogLevel (int logLevel)
	Configure the log level.

void	setDebugLevel (int debugLevel)
	Configure the debug messaging level.

void	setAbortLevel (int abortLevel)
	Configure the abort log level.

void	setLogInfo (int logLevel, unsigned int logInfo)
	Configure the printed log information for the given level. More...

void	if_value (const std::string &expression, const std::shared_ptr< Path > &path, EAfterConditionPath afterConditionPath=EAfterConditionPath::c_End)
	Add a condition to the module. More...

void	if_false (const std::shared_ptr< Path > &path, EAfterConditionPath afterConditionPath=EAfterConditionPath::c_End)
	A simplified version to add a condition to the module. More...

void	if_true (const std::shared_ptr< Path > &path, EAfterConditionPath afterConditionPath=EAfterConditionPath::c_End)
	A simplified version to set the condition of the module. More...

bool	hasCondition () const
	Returns true if at least one condition was set for the module.

const ModuleCondition *	getCondition () const
	Return a pointer to the first condition (or nullptr, if none was set)

const std::vector< ModuleCondition > &	getAllConditions () const
	Return all set conditions for this module.

bool	evalCondition () const
	If at least one condition was set, it is evaluated and true returned if at least one condition returns true. More...

std::shared_ptr< Path >	getConditionPath () const
	Returns the path of the last true condition (if there is at least one, else reaturn a null pointer). More...

Module::EAfterConditionPath	getAfterConditionPath () const
	What to do after the conditional path is finished. More...

std::vector< std::shared_ptr< Path > >	getAllConditionPaths () const
	Return all condition paths currently set (no matter if the condition is true or not).

bool	hasProperties (unsigned int propertyFlags) const
	Returns true if all specified property flags are available in this module. More...

bool	hasUnsetForcedParams () const
	Returns true and prints error message if the module has unset parameters which the user has to set in the steering file.

const ModuleParamList &	getParamList () const
	Return module param list.

template<typename T >
ModuleParam< T > &	getParam (const std::string &name) const
	Returns a reference to a parameter. More...

bool	hasReturnValue () const
	Return true if this module has a valid return value set.

int	getReturnValue () const
	Return the return value set by this module. More...

std::shared_ptr< PathElement >	clone () const override
	Create an independent copy of this module. More...

std::shared_ptr< boost::python::list >	getParamInfoListPython () const
	Returns a python list of all parameters. More...

Static Public Member Functions
static void	exposePythonAPI ()
	Exposes methods of the Module class to Python.

Protected Member Functions
virtual void	def_initialize ()
	Wrappers to make the methods without "def_" prefix callable from Python. More...

virtual void	def_beginRun ()
	Wrapper method for the virtual function beginRun() that has the implementation to be used in a call from Python.

virtual void	def_event ()
	Wrapper method for the virtual function event() that has the implementation to be used in a call from Python.

virtual void	def_endRun ()
	This method can receive that the current run ends as a call from the Python side. More...

virtual void	def_terminate ()
	Wrapper method for the virtual function terminate() that has the implementation to be used in a call from Python.

void	setDescription (const std::string &description)
	Sets the description of the module. More...

void	setType (const std::string &type)
	Set the module type. More...

template<typename T >
void	addParam (const std::string &name, T &paramVariable, const std::string &description, const T &defaultValue)
	Adds a new parameter to the module. More...

template<typename T >
void	addParam (const std::string &name, T &paramVariable, const std::string &description)
	Adds a new enforced parameter to the module. More...

void	setReturnValue (int value)
	Sets the return value for this module as integer. More...

void	setReturnValue (bool value)
	Sets the return value for this module as bool. More...

void	setParamList (const ModuleParamList &params)
	Replace existing parameter list.

Private Member Functions
bool	isTrackPairSelected (const Track track1, const Track track2)
	Track pair preselection based on a point-of-closest-approach of two tracks. More...

bool	preFilterTracks (const Track trackPlus, const Track trackMinus, const Const::ParticleType &v0Hypothesis)
	Helper function that gets the approximate mass range for the two given tracks and rejects candidates which do not fall into a user given mass range for lambda and Kshort. More...

void	fitAndStore (const Track trackPlus, const Track trackMinus, const Const::ParticleType &v0Hypothesis)
	V0 fitting and storing. More...

std::list< ModulePtr >	getModules () const override
	no submodules, return empty list

std::string	getPathString () const override
	return the module name.

void	setParamPython (const std::string &name, const boost::python::object &pyObj)
	Implements a method for setting boost::python objects. More...

void	setParamPythonDict (const boost::python::dict &dictionary)
	Implements a method for reading the parameter values from a boost::python dictionary. More...

Private Attributes
std::string	m_arrayNameTrack
	StoreArray name of the Tracks (Input).

StoreArray< Track >	m_tracks
	Actually array of mdst Tracks.

std::unique_ptr< V0Fitter >	m_v0Fitter
	Object containing the actual algorithm.

std::unique_ptr< NewV0Fitter >	m_newV0Fitter
	Object containing the actual algorithm.

std::string	m_arrayNameRecoTrack
	StoreArray name of the RecoTracks (Input).

std::string	m_arrayNameCopiedRecoTrack
	StoreArray name of the RecoTracks.

std::string	m_arrayNameTFResult
	StoreArray name of the TrackFitResults (In- and Output).

std::string	m_arrayNameV0
	StoreArray name of the V0 (Output).

double	m_beamPipeRadius
	Radius where inside/outside beampipe is defined.

double	m_vertexChi2CutOutside
	Chi2 cut for V0s outside of the beampipe. Applies to all.

int	m_v0FitterMode
	fitter mode

double	m_precutRho
	preselection cut on transverse radius of the track pair POCA

double	m_precutCosAlpha
	preselection cut on opening angle of the track pair

bool	m_useNewV0Fitter
	toggle between old (false) and new (true) V0 fitter

bool	m_useValidation
	on true save also fitted vertices in V0ValidationVertex StoreArray

std::tuple< double, double >	m_invMassRangeKshort = { 0.425, 0.575 }
	range for reconstructed Kshort mass used after removing material effects and inner hits

std::tuple< double, double >	m_invMassRangeLambda = { 1.09, 1.14 }
	range for reconstructed Lambda mass used after removing material effects and inner hits

std::tuple< double, double >	m_invMassRangePhoton = { 0, 0.1 }
	range for reconstructed Photon mass used after removing material effects and inner hits

std::string	m_arrayNameV0ValidationVertex
	StoreArray name of the V0ValidationVertex.

std::tuple< double, double >	m_preFilterMassRangeKshort = { 0.45, Const::K0Mass + 0.015 }
	range for reconstructed Kshort mass used for pre-selection

std::tuple< double, double >	m_preFilterMassRangeLambda = { Const::Lambda.getMass() - 0.03, Const::Lambda.getMass() + 0.03 }
	range for reconstructed Lambda mass used for pre-selection

double	m_mKshortMin2 = 0
	pre-calculated mininum Kshort mass squared

double	m_mKshortMax2 = 0
	pre-calculated maximum Kshort mass squared

double	m_mLambdaMin2 = 0
	pre-calculated mininum Lambda mass squared

double	m_mLambdaMax2 = 0
	pre-calculated maximum Lambda mass squared

int	m_allStored = 0
	counter for all saved V0s

int	m_nForceStored = 0
	counter for saved V0s failing to remove the inner hits

int	m_nHitRemoved = 0
	counter for saved V0s successfully removing the inner hits

std::string	m_name
	The name of the module, saved as a string (user-modifiable)

std::string	m_type
	The type of the module, saved as a string.

std::string	m_package
	Package this module is found in (may be empty).

std::string	m_description
	The description of the module.

unsigned int	m_propertyFlags
	The properties of the module as bitwise or (with \|) of EModulePropFlags.

LogConfig	m_logConfig
	The log system configuration of the module.

ModuleParamList	m_moduleParamList
	List storing and managing all parameter of the module.

bool	m_hasReturnValue
	True, if the return value is set.

int	m_returnValue
	The return value.

std::vector< ModuleCondition >	m_conditions
	Module condition, only non-null if set.

Detailed Description

V0 finder module.

Pairs up all positive and negative tracks, tries to find vertices between them. Only vertices outside the beam pipe are saved, the others are recovered at the analysis level.

The resulting pairs of tracks are stored as mdst::V0.

Definition at line 37 of file V0FinderModule.h.

Member Enumeration Documentation

◆ EModulePropFlags

enum EModulePropFlags

inherited

Each module can be tagged with property flags, which indicate certain features of the module.

Enumerator
c_Input	This module is an input module (reads data).
c_Output	This module is an output module (writes data).
c_ParallelProcessingCertified	This module can be run in parallel processing mode safely (All I/O must be done through the data store, in particular, the module must not write any files.)
c_HistogramManager	This module is used to manage histograms accumulated by other modules.
c_InternalSerializer	This module is an internal serializer/deserializer for parallel processing.
c_TerminateInAllProcesses	When using parallel processing, call this module's terminate() function in all processes(). This will also ensure that there is exactly one process (single-core if no parallel modules found) or at least one input, one main and one output process.
c_DontCollectStatistics	No statistics is collected for this module.

Definition at line 77 of file Module.h.

Member Function Documentation

◆ beginRun()

virtual void beginRun ( void )

inlinevirtualinherited

Called when entering a new run.

Called at the beginning of each run, the method gives you the chance to change run dependent constants like alignment parameters, etc.

This method can be implemented by subclasses.

Definition at line 147 of file Module.h.

◆ clone()

std::shared_ptr< PathElement > clone ( ) const

overridevirtualinherited

Create an independent copy of this module.

Note that parameters are shared, so changing them on a cloned module will also affect the original module.

Implements PathElement.

Definition at line 179 of file Module.cc.

◆ def_endRun()

virtual void def_endRun ( )

inlineprotectedvirtualinherited

This method can receive that the current run ends as a call from the Python side.

For regular C++-Modules that forwards the call to the regular endRun() method.

Reimplemented in PyModule.

Definition at line 439 of file Module.h.

◆ def_initialize()

virtual void def_initialize ( )

inlineprotectedvirtualinherited

Wrappers to make the methods without "def_" prefix callable from Python.

Overridden in PyModule. Wrapper method for the virtual function initialize() that has the implementation to be used in a call from Python.

Reimplemented in PyModule.

Definition at line 420 of file Module.h.

◆ endRun()

virtual void endRun ( void )

inlinevirtualinherited

This method is called if the current run ends.

Use this method to store information, which should be aggregated over one run.

This method can be implemented by subclasses.

Definition at line 166 of file Module.h.

◆ evalCondition()

bool evalCondition ( ) const

inherited

If at least one condition was set, it is evaluated and true returned if at least one condition returns true.

If no condition or result value was defined, the method returns false. Otherwise, the condition is evaluated and true returned, if at least one condition returns true. To speed up the evaluation, the condition strings were already parsed in the method if_value().

Returns: True if at least one condition and return value exists and at least one condition expression was evaluated to true.

Definition at line 96 of file Module.cc.

◆ fitAndStore()

void fitAndStore	(	const Track *	trackPlus,
		const Track *	trackMinus,
		const Const::ParticleType &	v0Hypothesis
	)

private

V0 fitting and storing.

Parameters

trackPlus	positively charged track
trackMinus	negatively charged track
v0Hypothesis	hypothesis for the V0

Definition at line 282 of file V0FinderModule.cc.

 {
   try {
     bool isForceStored = false, isHitRemoved = false;
     if (m_newV0Fitter) {
       bool ok = m_newV0Fitter->fitAndStore(trackPlus, trackMinus, v0Hypothesis, isForceStored, isHitRemoved);
       if (ok) m_allStored++;
     } else {
       bool ok = m_v0Fitter->fitAndStore(trackPlus, trackMinus, v0Hypothesis, isForceStored, isHitRemoved);
       if (ok) m_allStored++;
     }
     m_nForceStored += isForceStored;
     m_nHitRemoved += isHitRemoved;
   } catch (const genfit::Exception& e) {
     // genfit exception raised, skip this track pair for this hypothesis
     B2WARNING("Genfit exception caught. Skipping this track pair"
               << LogVar("V0 hypothesis PDG", v0Hypothesis.getPDGCode())
               << LogVar("Genfit exception:", e.what()));
   }
 }

◆ getAfterConditionPath()

Module::EAfterConditionPath getAfterConditionPath ( ) const

inherited

What to do after the conditional path is finished.

(defaults to c_End if no condition is set)

Definition at line 133 of file Module.cc.

◆ getConditionPath()

std::shared_ptr< Path > getConditionPath ( ) const

inherited

Returns the path of the last true condition (if there is at least one, else reaturn a null pointer).

Definition at line 113 of file Module.cc.

◆ getFileNames()

virtual std::vector<std::string> getFileNames ( bool outputFiles )

inlinevirtualinherited

Return a list of output filenames for this modules.

This will be called when basf2 is run with "--dry-run" if the module has set either the c_Input or c_Output properties.

If the parameter outputFiles is false (for modules with c_Input) the list of input filenames should be returned (if any). If outputFiles is true (for modules with c_Output) the list of output files should be returned (if any).

If a module has sat both properties this member is called twice, once for each property.

The module should return the actual list of requested input or produced output filenames (including handling of input/output overrides) so that the grid system can handle input/output files correctly.

This function should return the same value when called multiple times. This is especially important when taking the input/output overrides from Environment as they get consumed when obtained so the finalized list of output files should be stored for subsequent calls.

Reimplemented in RootOutputModule, StorageRootOutputModule, and RootInputModule.

Definition at line 134 of file Module.h.

◆ getName()

const std::string& getName ( ) const

inlineinherited

Returns the name of the module.

This can be changed via e.g. set_name() in the steering file to give more useful names if there is more than one module of the same type.

For identifying the type of a module, using getType() (or type() in Python) is recommended.

Definition at line 187 of file Module.h.

◆ getParamInfoListPython()

std::shared_ptr< boost::python::list > getParamInfoListPython ( ) const

inherited

Returns a python list of all parameters.

Each item in the list consists of the name of the parameter, a string describing its type, a python list of all default values and the description of the parameter.

Returns: A python list containing the parameters of this parameter list.

Definition at line 279 of file Module.cc.

◆ getReturnValue()

int getReturnValue ( ) const

inlineinherited

Return the return value set by this module.

This value is only meaningful if hasReturnValue() is true

Definition at line 381 of file Module.h.

◆ getType()

const std::string & getType ( ) const

inherited

Returns the type of the module (i.e.

class name minus 'Module')

Definition at line 41 of file Module.cc.

◆ hasProperties()

bool hasProperties ( unsigned int propertyFlags ) const

inherited

Returns true if all specified property flags are available in this module.

Parameters

propertyFlags Ored EModulePropFlags which should be compared with the module flags.

Definition at line 160 of file Module.cc.

◆ if_false()

void if_false	(	const std::shared_ptr< Path > &	path,
		EAfterConditionPath	afterConditionPath = `EAfterConditionPath::c_End`
	)

inherited

A simplified version to add a condition to the module.

Please note that successive calls of this function will add more than one condition to the module. If more than one condition results in true, only the last of them will be used.

Please be careful: Avoid creating cyclic paths, e.g. by linking a condition to a path which is processed before the path where this module is located in.

It is equivalent to the if_value() method, using the expression "<1". This method is meant to be used together with the setReturnValue(bool value) method.

Parameters

path	Shared pointer to the Path which will be executed if the return value is false.
afterConditionPath	What to do after executing 'path'.

Definition at line 85 of file Module.cc.

◆ if_true()

void if_true	(	const std::shared_ptr< Path > &	path,
		EAfterConditionPath	afterConditionPath = `EAfterConditionPath::c_End`
	)

inherited

A simplified version to set the condition of the module.

Please note that successive calls of this function will add more than one condition to the module. If more than one condition results in true, only the last of them will be used.

Please be careful: Avoid creating cyclic paths, e.g. by linking a condition to a path which is processed before the path where this module is located in.

It is equivalent to the if_value() method, using the expression ">=1". This method is meant to be used together with the setReturnValue(bool value) method.

Parameters

path	Shared pointer to the Path which will be executed if the return value is true.
afterConditionPath	What to do after executing 'path'.

Definition at line 90 of file Module.cc.

◆ if_value()

void if_value	(	const std::string &	expression,
		const std::shared_ptr< Path > &	path,
		EAfterConditionPath	afterConditionPath = `EAfterConditionPath::c_End`
	)

inherited

Add a condition to the module.

Please note that successive calls of this function will add more than one condition to the module. If more than one condition results in true, only the last of them will be used.

See https://confluence.desy.de/display/BI/Software+ModCondTut or ModuleCondition for a description of the syntax.

Please be careful: Avoid creating cyclic paths, e.g. by linking a condition to a path which is processed before the path where this module is located in.

Parameters

expression	The expression of the condition.
path	Shared pointer to the Path which will be executed if the condition is evaluated to true.
afterConditionPath	What to do after executing 'path'.

Definition at line 79 of file Module.cc.

◆ isTrackPairSelected()

bool isTrackPairSelected	(	const Track *	track1,
		const Track *	track2
	)

private

Track pair preselection based on a point-of-closest-approach of two tracks.

Tracks are approximated with staright lines using their perigee parameters.

Parameters

track1	first track
track2	second track

Returns: true, if preselection criteria are satisfied.

Definition at line 239 of file V0FinderModule.cc.

◆ preFilterTracks()

bool preFilterTracks	(	const Track *	trackPlus,
		const Track *	trackMinus,
		const Const::ParticleType &	v0Hypothesis
	)

private

Helper function that gets the approximate mass range for the two given tracks and rejects candidates which do not fall into a user given mass range for lambda and Kshort.

Parameters

trackPlus	positively charged track
trackMinus	negatively charged track
v0Hypothesis	hypothesis for the V0 (Lambda, or Kshort, for all others nothing happens)

Returns: true if selected

Definition at line 197 of file V0FinderModule.cc.

◆ setDescription()

void setDescription ( const std::string & description )

protectedinherited

Sets the description of the module.

Parameters

description A description of the module.

Definition at line 214 of file Module.cc.

◆ setLogInfo()

void setLogInfo	(	int	logLevel,
		unsigned int	logInfo
	)

inherited

Configure the printed log information for the given level.

Parameters

logLevel	The log level (one of LogConfig::ELogLevel)
logInfo	What kind of info should be printed? ORed combination of LogConfig::ELogInfo flags.

Definition at line 73 of file Module.cc.

◆ setName()

void setName ( const std::string & name )

inlineinherited

Set the name of the module.

Note: The module name is set when using the REG_MODULE macro, but the module can be renamed before calling process() using the set_name() function in your steering file.

Parameters

name	The name of the module

Definition at line 214 of file Module.h.

◆ setParamPython()

void setParamPython	(	const std::string &	name,
		const boost::python::object &	pyObj
	)

privateinherited

Implements a method for setting boost::python objects.

The method supports the following types: list, dict, int, double, string, bool The conversion of the python object to the C++ type and the final storage of the parameter value is done in the ModuleParam class.

Parameters

name	The unique name of the parameter.
pyObj	The object which should be converted and stored as the parameter value.

Definition at line 234 of file Module.cc.

◆ setParamPythonDict()

void setParamPythonDict ( const boost::python::dict & dictionary )

privateinherited

Implements a method for reading the parameter values from a boost::python dictionary.

The key of the dictionary has to be the name of the parameter and the value has to be of one of the supported parameter types.

Parameters

dictionary The python dictionary from which the parameter values are read.

Definition at line 249 of file Module.cc.

◆ setPropertyFlags()

void setPropertyFlags ( unsigned int propertyFlags )

inherited

Sets the flags for the module properties.

Parameters

propertyFlags bitwise OR of EModulePropFlags

Definition at line 208 of file Module.cc.

◆ setReturnValue() [1/2]

void setReturnValue ( bool value )

protectedinherited

Sets the return value for this module as bool.

The bool value is saved as an integer with the convention 1 meaning true and 0 meaning false. The value can be used in the steering file to divide the analysis chain into several paths.

Parameters

value The value of the return value.

Definition at line 227 of file Module.cc.

◆ setReturnValue() [2/2]

void setReturnValue ( int value )

protectedinherited

Sets the return value for this module as integer.

The value can be used in the steering file to divide the analysis chain into several paths.

Parameters

value The value of the return value.

Definition at line 220 of file Module.cc.

◆ setType()

void setType ( const std::string & type )

protectedinherited

Set the module type.

Only for use by internal modules (which don't use the normal REG_MODULE mechanism).

Definition at line 48 of file Module.cc.

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

tracking/modules/V0Finder/include/V0FinderModule.h
tracking/modules/V0Finder/src/V0FinderModule.cc

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ EModulePropFlags

Member Function Documentation

◆ beginRun()

◆ clone()

◆ def_endRun()

◆ def_initialize()

◆ endRun()

◆ evalCondition()

◆ fitAndStore()

◆ getAfterConditionPath()

◆ getConditionPath()

◆ getFileNames()

◆ getName()

◆ getParamInfoListPython()

◆ getReturnValue()

◆ getType()

◆ hasProperties()

◆ if_false()

◆ if_true()

◆ if_value()

◆ isTrackPairSelected()

◆ preFilterTracks()

◆ setDescription()

◆ setLogInfo()

◆ setName()

◆ setParamPython()

◆ setParamPythonDict()

◆ setPropertyFlags()

◆ setReturnValue() [1/2]

◆ setReturnValue() [2/2]

◆ setType()