TauDecayModes.TauDecayModes Class Reference

Inheritance diagram for TauDecayModes.TauDecayModes:

Public Member Functions
def	__init__ (self)
def	__str__ (self)
def	genDecayModeFromJetInt (self, c)
def	genDecayModeInt (self, daughters)
def	intToName (self, anInt)
def	nameToInt (self, aName)
def	translateGenModeToInt (self, dm)

Static Public Member Functions
def	genDecayMode (daughters)
def	genDecayModeFromGenJet (c)

Public Attributes
	decayModeNames
	decayModes

Private Member Functions
def	_decayModes (self)

Detailed Description

Definition at line 3 of file TauDecayModes.py.

Constructor & Destructor Documentation

def TauDecayModes.TauDecayModes.__init__

(

self

)

Definition at line 5 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes._decayModes().

    def __init__(self):
        self._decayModes() 
        

Member Function Documentation

def TauDecayModes.TauDecayModes.__str__

(

self

)

Definition at line 43 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes.decayModes, and str.

    def __str__(self):
        return str( self.decayModes )

def TauDecayModes.TauDecayModes._decayModes (   self )

private

Builds the internal dictionaries from the enum defined in 
http://cmslxr.fnal.gov/lxr/source/DataFormats/TauReco/interface/PFTau.h

Definition at line 8 of file TauDecayModes.py.

Referenced by TauDecayModes.TauDecayModes.__init__().

    def _decayModes(self):
        '''Builds the internal dictionaries from the enum defined in 
        http://cmslxr.fnal.gov/lxr/source/DataFormats/TauReco/interface/PFTau.h'''
        import six
        tmp = [
            'kNull',
            'kOneProng0PiZero',
            'kOneProng1PiZero',
            'kOneProng2PiZero',
            'kOneProng3PiZero',
            'kOneProngNPiZero',
            'kTwoProng0PiZero',
            'kTwoProng1PiZero',
            'kTwoProng2PiZero',
            'kTwoProng3PiZero',
            'kTwoProngNPiZero',
            'kThreeProng0PiZero',
            'kThreeProng1PiZero',
            'kThreeProng2PiZero',
            'kThreeProng3PiZero',
            'kThreeProngNPiZero',
            'kRareDecayMode'
            ]
        self.decayModes = dict( (index-1, name) for index, name in enumerate( tmp ) )
        self.decayModeNames = dict( (value, key) for key, value \
                                    in six.iteritems(self.decayModes) )

def TauDecayModes.TauDecayModes.genDecayMode (   daughters )

static

Returns the generated tau decay mode based on a passed list of all
final daughters before further decay (as contained in miniAOD).

Definition at line 81 of file TauDecayModes.py.

References funct.abs().

Referenced by TauDecayModes.TauDecayModes.genDecayModeInt().

    def genDecayMode(daughters):
        ''' Returns the generated tau decay mode based on a passed list of all
        final daughters before further decay (as contained in miniAOD).
        '''
        numElectrons = 0
        numMuons = 0
        numChargedHadrons = 0
        numNeutralHadrons = 0
        numPhotons = 0
  
        for daughter in daughters:
            pdg_id = abs(daughter.pdgId())
            if pdg_id == 22:
                numPhotons += 1
            elif pdg_id == 11:
                numElectrons +=1
            elif pdg_id == 13:
                numMuons += 1
            else:
                if daughter.charge() != 0:
                    numChargedHadrons += 1
                elif pdg_id not in [12, 14, 16]:
                    numNeutralHadrons += 1

        if numElectrons == 1:
            return "electron"
        if numMuons == 1:
            return "muon"

        if numChargedHadrons == 1:
            if numNeutralHadrons != 0:
                return "kOneProngOther"
            if numPhotons == 0:
                return "kOneProng0PiZero"
            elif numPhotons == 2:
                return "kOneProng1PiZero"
            elif numPhotons == 4:
                return "kOneProng2PiZero"
            elif numPhotons == 6:
                return "kOneProng3PiZero"
            else:
                return "kOneProngNPiZero"
        elif numChargedHadrons == 3:
            if numNeutralHadrons != 0:
                return "kThreeProngOther"
            if numPhotons == 0:
                return "kThreeProng0PiZero"
            elif numPhotons == 2:
                return "kThreeProng1PiZero"
            elif numPhotons == 4:
                return "kThreeProng2PiZero"
            elif numPhotons == 6:
                return "kThreeProng3PiZero"
            else:
                return "kThreeProngNPiZero"

        return "kRareDecayMode"

def TauDecayModes.TauDecayModes.genDecayModeFromGenJet (   c )

static

Returns generated tau decay mode. Needs to be called on genJet
as stored in pat::Tau, if available.

Translated from PhysicsTools/JetMCUtils/interface/JetMCTag.h,
which is not available in FWlite.

Definition at line 68 of file TauDecayModes.py.

Referenced by TauDecayModes.TauDecayModes.genDecayModeFromJetInt().

    def genDecayModeFromGenJet(c):
        ''' Returns generated tau decay mode. Needs to be called on genJet
        as stored in pat::Tau, if available.

        Translated from PhysicsTools/JetMCUtils/interface/JetMCTag.h,
        which is not available in FWlite.
        '''

        daughters = c.daughterPtrVector()

        return TauDecayModes.genDecayMode(daughters)

def TauDecayModes.TauDecayModes.genDecayModeFromJetInt	(		self,
			c
	)

Definition at line 50 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes.genDecayModeFromGenJet(), and TauDecayModes.TauDecayModes.translateGenModeToInt().

    def genDecayModeFromJetInt(self, c):
        dm = self.genDecayModeFromGenJet(c)
        return self.translateGenModeToInt(dm)

def TauDecayModes.TauDecayModes.genDecayModeInt	(		self,
			daughters
	)

Definition at line 46 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes.genDecayMode(), and TauDecayModes.TauDecayModes.translateGenModeToInt().

    def genDecayModeInt(self, daughters):
        dm = self.genDecayMode(daughters)
        return self.translateGenModeToInt(dm)

def TauDecayModes.TauDecayModes.intToName	(		self,
			anInt
	)

Returns the decay mode name corresponding to an int.

Definition at line 35 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes.decayModes.

    def intToName( self, anInt ):
        '''Returns the decay mode name corresponding to an int.'''
        return self.decayModes[ anInt ]

def TauDecayModes.TauDecayModes.nameToInt	(		self,
			aName
	)

Returns the decay mode int corresponding to a name.

Definition at line 39 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes.decayModeNames.

Referenced by TauDecayModes.TauDecayModes.translateGenModeToInt().

    def nameToInt( self, aName ):
        '''Returns the decay mode int corresponding to a name.'''
        return self.decayModeNames[ aName ]      
    

def TauDecayModes.TauDecayModes.translateGenModeToInt	(		self,
			dm
	)

Definition at line 54 of file TauDecayModes.py.

References TauDecayModes.TauDecayModes.decayModeNames, and TauDecayModes.TauDecayModes.nameToInt().

Referenced by TauDecayModes.TauDecayModes.genDecayModeFromJetInt(), and TauDecayModes.TauDecayModes.genDecayModeInt().

    def translateGenModeToInt(self, dm):
        if dm in self.decayModeNames:
            return self.nameToInt(dm)
        elif dm == 'electron':
            return -11
        elif dm == 'muon':
            return -13
        elif dm == 'kOneProngOther':
            return 100 # one-prong + 100
        elif dm == 'kThreeProngOther':
            return 110 # three-prong + 100
        return -99

Member Data Documentation

TauDecayModes.TauDecayModes.decayModeNames

Definition at line 32 of file TauDecayModes.py.

Referenced by TauDecayModes.TauDecayModes.nameToInt(), and TauDecayModes.TauDecayModes.translateGenModeToInt().

TauDecayModes.TauDecayModes.decayModes

Definition at line 31 of file TauDecayModes.py.

Referenced by TauDecayModes.TauDecayModes.__str__(), and TauDecayModes.TauDecayModes.intToName().