AliFMDMCHitEnergyFitterTask Class Reference

#include <AliFMDMCHitEnergyFitterTask.h>

Inheritance diagram for AliFMDMCHitEnergyFitterTask:

Public Member Functions
	AliFMDMCHitEnergyFitterTask ()
	AliFMDMCHitEnergyFitterTask (const char *name, Bool_t useTuple=false)
	~AliFMDMCHitEnergyFitterTask ()
Bool_t	Setup ()
Bool_t	Book ()
Bool_t	PreData (const TAxis &ipz, const TAxis &eta)
Bool_t	Event (AliESDEvent &esd)
Bool_t	Finalize ()
void	Print (Option_t *option="") const
AliFMDEventInspector &	GetEventInspector ()
const AliFMDEventInspector &	GetEventInspector () const
AliFMDMCHitEnergyFitter &	GetEnergyFitter ()
const AliFMDMCHitEnergyFitter &	GetEnergyFitter () const
void	SetDebug (Int_t dbg)
Public Member Functions inherited from AliBaseESDTask
	AliBaseESDTask ()
	AliBaseESDTask (const char *name, const char *title, AliCorrectionManagerBase *manager)
virtual Bool_t	Connect (const char *sumFile=0, const char *resFile=0)
virtual Bool_t	Connect (const char *sumFile, const char *resFile, Bool_t old)
virtual void	PreCorrections (const AliESDEvent *esd)
virtual Bool_t	PreEvent ()
virtual Bool_t	PostEvent ()
virtual void	SetDebugLevel (Int_t dbg)
void	SetIPzMethod (const char *str)
virtual Bool_t	Configure (const char *macro="-default-")

Protected Member Functions
	AliFMDMCHitEnergyFitterTask (const AliFMDMCHitEnergyFitterTask &o)
AliFMDMCHitEnergyFitterTask &	operator= (const AliFMDMCHitEnergyFitterTask &o)
TAxis *	DefaultEtaAxis () const
TAxis *	DefaultVertexAxis () const
	ClassDef (AliFMDMCHitEnergyFitterTask, 1)
Protected Member Functions inherited from AliBaseESDTask
	AliBaseESDTask (const AliBaseESDTask &o)
AliBaseESDTask &	operator= (const AliBaseESDTask &o)
virtual Bool_t	IsMC () const
virtual AliCorrectionManagerBase *	GetManager () const
virtual AliCorrectionManagerBase *	GetManager ()
virtual void	CreateBranches (AliAODHandler *)
virtual void	MarkEventForStore () const
virtual Bool_t	CheckCorrections (UInt_t what) const
virtual Bool_t	ReadCorrections (const TAxis *&pe, const TAxis *&pv, Bool_t mc=false, Bool_t sat=false)
virtual AliESDEvent *	GetESDEvent ()
virtual const char *	DefaultConfig () const
void	LocalInit ()
void	UserCreateOutputObjects ()
void	UserExec (Option_t *option)
void	Terminate (Option_t *option)

Protected Attributes
AliFMDEventInspector	fEventInspector
AliFMDMCHitEnergyFitter	fEnergyFitter
AliMCAuxHandler *	fHitHandler
Protected Attributes inherited from AliBaseESDTask
Bool_t	fFirstEvent
TList *	fList
TList *	fResults
UInt_t	fNeededCorrections
UInt_t	fExtraCorrections
Bool_t	fCloneList

Detailed Description

This task is designed to read in MC truth information about the energy loss in each strip, and then fit the distributions from secondaries and primaries separately.

Then (this is not implemented yet) it tries to deconvolve the contributions from secondaries and primaries separately from the total sum energy loss distribution, and in that way estimate the secondary to primary charge particle ratios per \(\eta\) bin. If the same procedure is applied to real data, then we can have an estimate - from data - of the ratio of secondaries to primaries and thus perhaps get a clearer picture of the secondary particle contamination.

The the function fitted to the (scaled) energy loss ( \(\Delta/\Delta_{mip}\) distributions is

\[ F(\Delta;\Delta_p,\xi,\sigma,\mathbf{a}) = \sum_{i=1}^{N}a_i f(\Delta;\Delta_i,\xi_i,\sigma_i) \]

where \( a\) is of length \( N\) and

\[ f(\Delta;\Delta,\xi,\sigma) = \int_{-\infty}^{+\infty}d\Delta' L(\Delta,\Delta',\xi) \frac{1}{\sqrt{2\pi\sigma^2}} e^{-\frac{(\Delta'-\Delta_mp^2}{2\sigma^2}} \]

and

\[ \Delta_i = i(\Delta_1+\xi\log(i))\\ \xi_i = i\xi_1\\ \sigma_i = \sqrt{i}\sigma_1\\ a_1 = 1\\ \Delta_p = \Delta_1\\ \xi = \xi_1\\ \sigma = \sigma_1 \]

See also AliLandauGausFitter

Definition at line 49 of file AliFMDMCHitEnergyFitterTask.h.

Constructor & Destructor Documentation

AliFMDMCHitEnergyFitterTask::AliFMDMCHitEnergyFitterTask ( )

inline

Default CTOR - do not use

Definition at line 55 of file AliFMDMCHitEnergyFitterTask.h.

AliFMDMCHitEnergyFitterTask::AliFMDMCHitEnergyFitterTask	(	const char *	name,
		Bool_t	useTuple = false
	)

CTOR

Parameters

name	Name - not used
useTuple	Whether to use store an NTuple

Definition at line 9 of file AliFMDMCHitEnergyFitterTask.cxx.

AliFMDMCHitEnergyFitterTask::~AliFMDMCHitEnergyFitterTask ( )

inline

DTOR

Definition at line 72 of file AliFMDMCHitEnergyFitterTask.h.

AliFMDMCHitEnergyFitterTask::AliFMDMCHitEnergyFitterTask ( const AliFMDMCHitEnergyFitterTask &  o )

protected

Copy CTOR - not Implemented

Parameters

o	Object to copy from

Member Function Documentation

Bool_t AliFMDMCHitEnergyFitterTask::Book ( )

virtual

Called at start-up on the clients - i.e., called once per worker node before the event processing.

Returns

true

Implements AliBaseESDTask.

Definition at line 46 of file AliFMDMCHitEnergyFitterTask.cxx.

AliFMDMCHitEnergyFitterTask::ClassDef ( AliFMDMCHitEnergyFitterTask  , 1    )

protected

TAxis * AliFMDMCHitEnergyFitterTask::DefaultEtaAxis ( ) const

protectedvirtual

Get the default \(\eta=-\log[\tan^{-1}(\theta/2)]\) axis to use

Returns

Pointer to static object

Reimplemented from AliBaseESDTask.

Definition at line 22 of file AliFMDMCHitEnergyFitterTask.cxx.

TAxis * AliFMDMCHitEnergyFitterTask::DefaultVertexAxis ( ) const

protectedvirtual

Get the default interaction point Z–coordinate axis to use

Returns

Pointer to static object

Reimplemented from AliBaseESDTask.

Definition at line 29 of file AliFMDMCHitEnergyFitterTask.cxx.

Bool_t AliFMDMCHitEnergyFitterTask::Event ( AliESDEvent &  esd )

virtual

Process a single event

Parameters

esd	ESD input event

Returns

true on success

Implements AliBaseESDTask.

Definition at line 72 of file AliFMDMCHitEnergyFitterTask.cxx.

Bool_t AliFMDMCHitEnergyFitterTask::Finalize ( )

inlinevirtual

Finalize the task. This is called once after all event processing and after all outputs have been merged. This is called on the master/client once.

Returns

true on success

Reimplemented from AliBaseESDTask.

Definition at line 114 of file AliFMDMCHitEnergyFitterTask.h.

AliFMDMCHitEnergyFitter& AliFMDMCHitEnergyFitterTask::GetEnergyFitter ( )

inline

Get the energy fitter

Returns

Reference to the energy fitter

Definition at line 141 of file AliFMDMCHitEnergyFitterTask.h.

Referenced by AddTaskFMDMCHit(), and SetDebug().

const AliFMDMCHitEnergyFitter& AliFMDMCHitEnergyFitterTask::GetEnergyFitter ( ) const

inline

Get the energy fitter

Returns

Constant reference to the energy fitter

Definition at line 147 of file AliFMDMCHitEnergyFitterTask.h.

AliFMDEventInspector& AliFMDMCHitEnergyFitterTask::GetEventInspector ( )

inlinevirtual

Get the event inspector

Returns

Reference to the event inspector

Implements AliBaseESDTask.

Definition at line 126 of file AliFMDMCHitEnergyFitterTask.h.

Referenced by AddTaskFMDMCHit().

const AliFMDEventInspector& AliFMDMCHitEnergyFitterTask::GetEventInspector ( ) const

inlinevirtual

Get the event inspector

Returns

Constant reference to the event inspector

Implements AliBaseESDTask.

Definition at line 132 of file AliFMDMCHitEnergyFitterTask.h.

AliFMDMCHitEnergyFitterTask& AliFMDMCHitEnergyFitterTask::operator= ( const AliFMDMCHitEnergyFitterTask &  o )

protected

Assignment operator - not implemented

Parameters

o	Object to assign from

Returns

Reference to this

Bool_t AliFMDMCHitEnergyFitterTask::PreData ( const TAxis &  ipz, const TAxis &  eta  )

virtual

Called after the first event was seen - i.e., called once per worker node just after the first event was seen, but before event processing.

Parameters

ipz	Interaction point Z–coordinate axis to use
eta	\(\eta=-\log[\tan^{-1}(\theta/2)]\) axis to use

Returns

true

Reimplemented from AliBaseESDTask.

Definition at line 62 of file AliFMDMCHitEnergyFitterTask.cxx.

void AliFMDMCHitEnergyFitterTask::Print ( Option_t *  option = "" ) const

virtual

Print information to standard out

Parameters

option

Passed to sub objects as-is

Reimplemented from AliBaseESDTask.

Definition at line 122 of file AliFMDMCHitEnergyFitterTask.cxx.

void AliFMDMCHitEnergyFitterTask::SetDebug ( Int_t  dbg )

inlinevirtual

Set the debug level

Parameters

dbg

Reimplemented from AliBaseESDTask.

Definition at line 151 of file AliFMDMCHitEnergyFitterTask.h.

Referenced by AddTaskFMDMCHit().

Bool_t AliFMDMCHitEnergyFitterTask::Setup ( )

virtual

Called when setting up the train on the client - i.e., called once before the job hits the worker nodes

Returns

true

Reimplemented from AliBaseESDTask.

Definition at line 37 of file AliFMDMCHitEnergyFitterTask.cxx.

Member Data Documentation

AliFMDMCHitEnergyFitter AliFMDMCHitEnergyFitterTask::fEnergyFitter

protected

Definition at line 182 of file AliFMDMCHitEnergyFitterTask.h.

Referenced by Book(), Event(), Finalize(), GetEnergyFitter(), PreData(), Print(), and Setup().

AliFMDEventInspector AliFMDMCHitEnergyFitterTask::fEventInspector

protected

Definition at line 181 of file AliFMDMCHitEnergyFitterTask.h.

Referenced by Event(), and GetEventInspector().

AliMCAuxHandler* AliFMDMCHitEnergyFitterTask::fHitHandler

protected

Definition at line 183 of file AliFMDMCHitEnergyFitterTask.h.

Referenced by Book(), and Event().

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

• PWGLF/FORWARD/analysis2/AliFMDMCHitEnergyFitterTask.h
• PWGLF/FORWARD/analysis2/AliFMDMCHitEnergyFitterTask.cxx