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class AliMUONPairLight: public TObject

This class was prepared by INFN Cagliari, July 2006
(authors: H.Woehri, A.de Falco)

 Compact information for the generated muon pairs in the MUON arm
 useful at the last stage of the analysis chain
 Pairs are built with two AliMUONTrackLight objects
 Using the class AliMUONTrackLight this class combines the decay
 information ("history") of the reconstructed tracks and fills
 a series of flags for the formed reconstructed dimuon:
 fIsCorrelated, fCreationProcess, fIsFeedDown, ...
 for information about the dimuon, use PrintInfo with the appropriate
 printflag
 To be used together with AliMUONTrackLight

Function Members (Methods)

public:

	AliMUONPairLight()
	AliMUONPairLight(AliMUONPairLight& dimuCopy)
virtual	~AliMUONPairLight()
void	TObject::AbstractMethod(const char* method) const
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	TObject::Browse(TBrowser* b)
static TClass*	Class()
virtual const char*	TObject::ClassName() const
virtual void	TObject::Clear(Option_t* = "")
virtual TObject*	TObject::Clone(const char* newname = "") const
virtual Int_t	TObject::Compare(const TObject* obj) const
virtual void	TObject::Copy(TObject& object) const
virtual void	TObject::Delete(Option_t* option = "")MENU
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
Int_t	GetCauseOfCorrelation() const
Int_t	GetCharge()
Int_t	GetCreationProcess() const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
virtual const char*	TObject::GetIconName() const
AliMUONTrackLight*	GetMuon(Int_t index)
Int_t	GetMuonMotherPDG(Int_t imuon, Int_t mother = 0)
virtual const char*	TObject::GetName() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
Double_t	GetOpeningAngle()
virtual Option_t*	TObject::GetOption() const
TLorentzVector	GetPGen()
TLorentzVector	GetPRec()
virtual const char*	TObject::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TObject::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
virtual void	TObject::Inspect() constMENU
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
Bool_t	IsAResonance()
Bool_t	IsCorrelated() const
Bool_t	IsDimuonFromCorrPiK()
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
Bool_t	IsFeedDown() const
virtual Bool_t	TObject::IsFolder() const
Bool_t	IsOneMuonFromPionOrKaon()
Bool_t	IsOneTrackNotAMuon()
Bool_t	TObject::IsOnHeap() const
Bool_t	IsOpenBeauty()
Bool_t	IsOpenCharm()
virtual Bool_t	TObject::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TObject::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
void	TObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
static void	TObject::operator delete(void* ptr)
static void	TObject::operator delete(void* ptr, void* vp)
static void	TObject::operator delete[](void* ptr)
static void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
AliMUONPairLight&	operator=(const AliMUONPairLight&)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	TObject::Print(Option_t* option = "") const
virtual void	PrintInfo(Option_t* opt)
virtual Int_t	TObject::Read(const char* name)
virtual void	TObject::RecursiveRemove(TObject* obj)
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
void	SetCauseOfCorrelation(Int_t pdg)
void	SetCorrelated(Bool_t answer)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
void	SetFeedDown(Int_t answer)
virtual void	SetMuons(const AliMUONTrackLight& mu0, const AliMUONTrackLight& mu1)
static void	TObject::SetObjectStat(Bool_t stat)
virtual void	TObject::SetUniqueID(UInt_t uid)
virtual void	ShowMembers(TMemberInspector&)
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const

protected:

virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()
void	SetProcess()

Data Members

public:

enum TObject::EStatusBits {	kCanDelete
	kMustCleanup
	kObjInCanvas
	kIsReferenced
	kHasUUID
	kCannotPick
	kNoContextMenu
	kInvalidObject
};
enum TObject::[unnamed] {	kIsOnHeap
	kNotDeleted
	kZombie
	kBitMask
	kSingleKey
	kOverwrite
	kWriteDelete
};

protected:

Int_t	fCauseOfCorrelation	/<pdg of common mother
Int_t	fCreationProcess	/<0: pair creation, 1: gluon splitting, 2: flavour excitation, 3: same fragmented mother, -1: resonance
Bool_t	fIsCorrelated	/<tells if the two muons are of correlated origin
Int_t	fIsFeedDown	/< tells if the process is from feeddown
AliMUONTrackLight	fMu0	/< first muon
AliMUONTrackLight	fMu1	/< second muon

Class Charts

Inheritance Chart:

TObject

←

AliMUONPairLight

Function documentation

AliMUONPairLight()

 default constructor

AliMUONPairLight(AliMUONPairLight& dimuCopy)

 copy constructor
   fMu0 = AliMUONTrackLight(dimuCopy.fMu0);
   fMu1 = AliMUONTrackLight(dimuCopy.fMu1);
   fIsCorrelated = dimuCopy.fIsCorrelated;
   fCauseOfCorrelation = dimuCopy.fCauseOfCorrelation;
   fCreationProcess = dimuCopy.fCreationProcess;
   fIsFeedDown = dimuCopy.fIsFeedDown;

~AliMUONPairLight()

 destructor

AliMUONPairLight& operator=(const AliMUONPairLight& )

 check assignment to self

Bool_t IsAResonance()

 checks if muon pair comes from a resonance decay

AliMUONTrackLight* GetMuon(Int_t index)

 return muon 0 or 1

Int_t GetMuonMotherPDG(Int_t imuon, Int_t mother = 0)

 return muon mother pdg code

void SetProcess()

 finds the process related to the muon pair (open charm/beauty, resonance,
 uncorrelated...)

void SetMuons(const AliMUONTrackLight& mu0, const AliMUONTrackLight& mu1)

 set the two muons

void PrintInfo(Option_t* opt)

 print information about muon pairs
 Options:
 - "H" single muons' decay histories
 - "K" dimuon kinematics
 - "F" dimuon flags
 - "A" all variables

Double_t GetOpeningAngle()

 opening angle between the two muons in the lab frame (in degrees)

Bool_t IsDimuonFromCorrPiK()

check if we have a correlated pi/K

Bool_t IsOpenCharm()

 returns kTRUE if the creation process of the pair was "open charm" (kFALSE... otherwise)

{return (TMath::Abs(fMu0.GetParentFlavour(0))==4 && TMath::Abs(fMu1.GetParentFlavour(0))==4 && fIsCorrelated && !IsAResonance());}

Bool_t IsOpenBeauty()

 returns kTRUE if the creation process of the pair was "open beauty" (kFALSE... otherwise)

{return (TMath::Abs(fMu0.GetParentFlavour(0))==5 && TMath::Abs(fMu1.GetParentFlavour(0))==5 && fIsCorrelated  && !IsAResonance());}

Bool_t IsOneMuonFromPionOrKaon()

 returns kTRUE if at least one of the first hadronised parent is a pi or a K (kFALSE... otherwise)

{return (fMu0.IsParentPionOrKaon(0) || fMu1.IsParentPionOrKaon(0));}

Bool_t IsCorrelated() const

 Return the info if the two muons are of correlated origin

{return fIsCorrelated;}

Int_t GetCauseOfCorrelation() const

 Return the pdg of common mother

{return fCauseOfCorrelation;}

Bool_t IsFeedDown() const

 Return the info if the process is from feeddown

{return fIsFeedDown;}

Bool_t IsOneTrackNotAMuon()

 returns kTRUE if at least one of the reconstructed tracks is not a muon (kFALSE... otherwise)

{return (!( fMu0.IsAMuon() && fMu1.IsAMuon() )) ;}

Int_t GetCharge()

 returns the charge of the created pair

{return fMu0.GetCharge() + fMu1.GetCharge();}

Int_t GetCreationProcess() const

 \brief Return the info ablout creation process
0: pair creation, 1: gluon splitting, 2: flavour excitation, 3: same fragmented mother, -1: resonance

{return fCreationProcess;}

void SetCorrelated(Bool_t answer)

 Set the info ablout creation process

{fIsCorrelated = answer; }

void SetCauseOfCorrelation(Int_t pdg)

 Set the pdg of common mother

{fCauseOfCorrelation = pdg; }

void SetFeedDown(Int_t answer)

 Set the info if the process is from feeddown

{fIsFeedDown = answer;}

TLorentzVector GetPRec()

 returns a TLorentzVector containing the reconstructed kinematics of the pair

{return fMu0.GetPRec()+fMu1.GetPRec();}

TLorentzVector GetPGen()

 returns a TLorentzVector containing the generated kinematics of the pair

{return fMu0.GetPGen()+fMu1.GetPGen();}