StEEmcIUPi0Analysis Class Reference

A maker for creating pi0 histograms \Weihong He The StEEmcIUPi0Analysis takes as input the list of pi0 candiates provided by StEEmcMixMaker, filters out pairs depending on user-specified cuts, then spin sorts the events into a number of histograms. These histograms are stored in TDirectory's underneath the .hist dataset. The user may specify cuts in the SpinCuts object (accessible through a call to cuts().). More...

Inheritance diagram for StEEmcIUPi0Analysis:

List of all members.

Public Member Functions
	StEEmcIUPi0Analysis (const Char_t *name)
	constructor
	~StEEmcIUPi0Analysis ()
	destructor
Int_t	Init ()
	initializes the maker
Int_t	Make ()
	processes a single event
Int_t	InitRun (Int_t)
	init run
Int_t	numbofcutCandidate ()
void	Clear (Option_t *opts="")
	clears the maker
void	mixer (const Char_t *name)
void	points (const Char_t *name)
	specifies the name of the point maker
void	mudst (const Char_t *name)
	specifies the name of the mudst maker
void	analysis (const Char_t *name)
	specifies the name of the analysis maker
void	spin (const Char_t *name)
	specifies the name of the spin db maker
void	trigger (Int_t trig)
	Add trigger ID to process.
void	minbias (Int_t trig)
	Sets the appropriate minbias trig id.
SpinCutsIU *	cuts ()
void	filename (const Char_t *fname)
void	triggerSim (const Char_t *name, Int_t t)
Protected Types
enum	SpinStates {   kAny = 0, kUpUp, kUpDn, kDnUp,   kDnDn }
enum	EventCutTypes {   kEvent = 0, kMinBias, kTrig, kSoftTrig,   kSoftTrig36, kVertex, kCandidate }
enum	PairCutTypes {   kPair = 1, kTwoBody, kAdcTow, kEtTow,   kKinematics }
Protected Member Functions
Bool_t	twoBodyCut (StEEmcIUPair &p)
Bool_t	accept (StMuDst *mu)
	method to cut events
Bool_t	accept (StEEmcIUPair pair, Bool_t fill=true)
Int_t	getSpinState (StMuDst *mu, Int_t &bxs)
	method to retrieve 4bit spin state
	ClassDef (StEEmcIUPi0Analysis, 1)
	Makes class availabel to root.
Protected Attributes
StEEmcIUMixMaker *	mEEmixer
	Pointer to the pi0 mixer.
StEEmcIUPointMaker *	mEEpoints
	pointer to the point maker
StMuDstMaker *	mMuDst
	pointer to mudst
StEEmcA2EMaker *	mEEanalysis
	pointer to analysis maker
StSpinDbMaker *	mSpinDb
	pointer to the spin database
std::vector< Int_t >	mTriggerList
Int_t	mMinBias
SpinIUHistos *	mHistograms [5]
	Spin-sorted pi0 histograms.
SpinIUHistos *	mBackgrounds [5]
SpinCutsIU *	mCuts
TH1F *	hFillPatternI
TH1F *	hSpin4
TH1F *	hBx7
TH1F *	hBx48
TH2F *	hBx7diffBx48
TH1F *	hBxStar
TH1F *	hBxStarPi0
TH1F *	hPi0Mass
TH1F *	hPTvsPiNum
TH1F *	hMcEta
TH1F *	hMcPhi
TH1F *	hMcPt
TH2F *	hREtaPhi
TH1F *	hReconEta
TH1F *	hReconPhi
TH1F *	hEEmcEta
TH1F *	hResoEta
TH1F *	hResoPhi
TH1F *	hResoPt
TH2F *	hResoPtvsG
TH1F *	hMcEnergy
TH1F *	hResoEnergy
TH2F *	hResoEnergyvsG
TH1F *	hRecoEnergy
TH1F *	hZvert
TH2F *	hMassBx
TH2F *	hZvertBx
TH2F *	hZggBx
TH2F *	hEtaBx
TH1F *	hSpin4mb
TH1F *	hRealMcPD
TH1F *	hRealMcPR
TH2F *	McEvsMass
TH2F *	DEtaMass
TH2F *	DPhiMass
TH2D *	dUvsdV
TH2D *	dUvsdVGood
TH1F *	dUVzeroE
TH1F *	dUVzeroEta
TH2F *	dUvsRatio
TH2F *	dUvsRatioGood
TH2F *	dVvsRatio
TH2F *	dVvsRatioGood
TH2F *	GoodPiGeo
TH1F *	GoodPiPt
TH1F *	EventCounter
TH1F *	hPi0Counter
TH1F *	hEventCounter
	histogram to keep track of where events get cut
TH1F *	hPairCounter
	histogram to keep track of where candidates get cut
TString	mFilename
TFile *	mFile
StRFEmcTrigMaker *	mTrigSim
	Trigger simulation for MC.
Int_t	mTrigSimThreshold
Int_t	mRunNumber
Bool_t	mSpinSort
Int_t	numcutCan
Int_t	numoacceptedpair
EEmcGeomSimple *	mEEgeom
	EEMC tower geometry.
StEEmcIUMixEvent *	mRealEvent
StEEmcIUMixEvent *	mMixedEvent
TTree *	mRealTree
TTree *	mMixedTree

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Detailed Description

A maker for creating pi0 histograms \Weihong He The StEEmcIUPi0Analysis takes as input the list of pi0 candiates provided by StEEmcMixMaker, filters out pairs depending on user-specified cuts, then spin sorts the events into a number of histograms. These histograms are stored in TDirectory's underneath the .hist dataset. The user may specify cuts in the SpinCuts object (accessible through a call to cuts().).

Definition at line 35 of file StEEmcIUPi0Analysis.h.

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Member Function Documentation

Bool_t StEEmcIUPi0Analysis::accept	(	StEEmcIUPair	pair,
		Bool_t	fill = true
	)			[protected]

Pair must be isolated, i.e. only two points sharing tower energy

One gamma must be associated with a tower above trigger threshold

Pair must be w/in eta range

Definition at line 618 of file StEEmcIUPi0Analysis.cxx.

References StEEmcElement::adc(), StEEmcElement::energy(), StEEmcIUPoint::energy(), StEEmcTower::etabin(), hPairCounter, mEEgeom, StEEmcIUPoint::position(), StEEmcTower::sector(), StEEmcTower::subsector(), and twoBodyCut().

Int_t StEEmcIUPi0Analysis::getSpinState	(	StMuDst *	mu,
		Int_t &	bxs
	)			[protected]

method to retrieve 4bit spin state

HARDCODED KLUDGE

Definition at line 728 of file StEEmcIUPi0Analysis.cxx.

References StSpinDbMaker::BXyellowUsingBX48(), Clear(), hBx48, hBx7, hBx7diffBx48, hSpin4, hSpin4mb, mHistograms, mSpinDb, and StSpinDbMaker::spin4usingBX48().

Referenced by Make().

Int_t StEEmcIUPi0Analysis::Make

(

)

[virtual]

processes a single event

Determine spin state.

meh

Check trigger

map spin decimal bits to histograms

event energy sums

Loop over all candidate pairs

If spin sorting has been disabled

Repeat for backgrounds

Reimplemented from StMaker.

Definition at line 141 of file StEEmcIUPi0Analysis.cxx.

References accept(), StEEmcElement::adc(), StEEmcIUMixMaker::candidate(), StEEmcIUPoint::cluster(), StMuDst::event(), StEEmcElement::fail(), getSpinState(), hBxStar, hBxStarPi0, hEtaBx, hMassBx, hPairCounter, hZggBx, hZvertBx, kStOK, mEEanalysis, mEEmixer, mHistograms, StEEmcIUMixMaker::mixedCandidate(), mMuDst, mSpinDb, StMuDstMaker::muDst(), StEEmcIUMixMaker::numberOfCandidates(), StEEmcIUMixMaker::numberOfMixedCandidates(), StEEmcIUPoint::position(), StEEmcElement::stat(), and StEEmcA2EMaker::tower().

void StEEmcIUPi0Analysis::mixer

(

const Char_t *

name

)

specifies the name of the mixer and the mass range for gated histograms.

Definition at line 420 of file StEEmcIUPi0Analysis.cxx.

References mEEmixer.

void StEEmcIUPi0Analysis::spin

(

const Char_t *

name

)

specifies the name of the spin db maker

no assert, null pointer expected if running on MC

Definition at line 446 of file StEEmcIUPi0Analysis.cxx.

References mSpinDb.

Bool_t StEEmcIUPi0Analysis::twoBodyCut

(

StEEmcIUPair &

p

)

[protected]

Verify that the pi0 candidate is the only pair of reconstructed points matching the contiguous group of towers.

Obtain the 6-18 towers which contribute energy to this pair

NOTE: we could consider adding the next-nearest neighbors as well

Loop over all points in the endcap and count the number which match one of the specified towers as above

Definition at line 452 of file StEEmcIUPi0Analysis.cxx.

References StEEmcIUPoint::energy(), StEEmcElement::energy(), StEEmcTower::index(), mEEpoints, StEEmcTower::neighbor(), StEEmcTower::numberOfNeighbors(), StEEmcIUPointMaker::numberOfPoints(), StEEmcIUPointMaker::point(), and StEEmcIUPoint::tower().

Referenced by accept().

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Member Data Documentation

TH1F* StEEmcIUPi0Analysis::hBx48 [protected]

-- 48-bit bunch crossing

Definition at line 108 of file StEEmcIUPi0Analysis.h.

Referenced by getSpinState(), and Init().

TH1F* StEEmcIUPi0Analysis::hBx7 [protected]

-- 7-bit bunch crossing

Definition at line 107 of file StEEmcIUPi0Analysis.h.

Referenced by getSpinState(), and Init().

TH2F* StEEmcIUPi0Analysis::hBx7diffBx48 [protected]

-- 7-bit bunch crossing - 48bit

Definition at line 109 of file StEEmcIUPi0Analysis.h.

Referenced by getSpinState(), and Init().

TH1F* StEEmcIUPi0Analysis::hBxStar [protected]

-- star beam crossing

Definition at line 110 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and Make().

TH1F* StEEmcIUPi0Analysis::hBxStarPi0 [protected]

-- gated on pi0

Definition at line 111 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and Make().

TH2F* StEEmcIUPi0Analysis::hEtaBx [protected]

-- eta vs bunch crossing

Definition at line 134 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and Make().

TH1F* StEEmcIUPi0Analysis::hFillPatternI [protected]

-- intended fill pattern

Definition at line 105 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and InitRun().

TH2F* StEEmcIUPi0Analysis::hMassBx [protected]

-- mass vs bunch crossing

Definition at line 130 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and Make().

TH1F* StEEmcIUPi0Analysis::hSpin4 [protected]

-- number of times code sees spin state

Definition at line 106 of file StEEmcIUPi0Analysis.h.

Referenced by getSpinState(), and Init().

TH1F* StEEmcIUPi0Analysis::hSpin4mb [protected]

-- spin state w/ mb

Definition at line 136 of file StEEmcIUPi0Analysis.h.

Referenced by getSpinState(), and Init().

TH2F* StEEmcIUPi0Analysis::hZggBx [protected]

-- zgg vs bunch crossing

Definition at line 133 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and Make().

TH2F* StEEmcIUPi0Analysis::hZvertBx [protected]

-- z vertex (gated) vs bunch crossing

Definition at line 131 of file StEEmcIUPi0Analysis.h.

Referenced by Init(), and Make().

Int_t StEEmcIUPi0Analysis::mMinBias [protected]

-- id of the min bias trigger

Definition at line 97 of file StEEmcIUPi0Analysis.h.

Referenced by accept(), and minbias().

std::vector<Int_t> StEEmcIUPi0Analysis::mTriggerList [protected]

-- list of triggers to process

Definition at line 96 of file StEEmcIUPi0Analysis.h.

Referenced by accept(), and trigger().

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

• StEEmcPool/StEEmcIUPi0/StEEmcIUPi0Analysis.h
• StEEmcPool/StEEmcIUPi0/StEEmcIUPi0Analysis.cxx