def makeB2X(name,
decay,
inputs,
config,
useIP=True,
resVert=False,
usePi0=False):
'''Makes all B -> X selections.'''
from copy import deepcopy
comboCuts = LoKiCuts(['SUMPT', 'AM'], config).code()
flightCuts = ['BPVLTIME']
if useIP:
flightCuts += ['BPVIPCHI2', 'BPVDIRA']
momCuts = [
LoKiCuts(['VCHI2DOF'], config).code(),
#has1TrackChild(),
has1TrackChild(),
hasTopoChildren(),
LoKiCuts(flightCuts, config).code()
]
momCuts = LoKiCuts.combine(momCuts)
b2x = CombineParticles(DecayDescriptors=decay,
CombinationCut=comboCuts,
MotherCut=momCuts)
if usePi0:
#b2x = b2x.configurable(name+'Beauty2XGammaCombiner')
#b2x.ParticleCombiners.update({'':'MomentumCombiner'})
b2x.ParticleCombiners = {'': 'LoKi::VertexFitter'}
if resVert:
b2x = b2x.configurable(name + 'Beauty2XGammaVertexFitter')
b2x.addTool(OfflineVertexFitter)
b2x.ParticleCombiners.update({"": "OfflineVertexFitter"})
b2x.OfflineVertexFitter.useResonanceVertex = False
return Selection(name, Algorithm=b2x, RequiredSelections=inputs)
def _4jets( self, name, ptcut ):
HighPT4Jets = CombineParticles()
HighPT4Jets.ParticleCombiners = { "" : "LoKi::VertexFitter" }
HighPT4Jets.IgnoreP2PVFromInputLocations = True
HighPT4Jets.DecayDescriptor = "H_10 -> CELLjet CELLjet CELLjet CELLjet"
HighPT4Jets.DaughtersCuts = { "CELLjet" : "PT > "+ptcut+"*MeV" }
HighPT4Jets.CombinationCut = "(ADOCACHI2CUT(50, ''))"
HighPT4Jets.MotherCut = "VFASPF(VCHI2PDOF) < 20"
return HighPT4Jets
def _makeX2HHH(self,name,decays,amass,config,inputs,pi0=False):
''' Makes all X -> HHH selections involving neutrals.'''
comboCuts = [LoKiCuts(['ASUMPT'],config).code(),amass,hasTopoChild()]
comboCuts = LoKiCuts.combine(comboCuts)
momCuts = LoKiCuts(['VCHI2DOF','BPVVDCHI2'],config).code()
cp = CombineParticles(CombinationCut=comboCuts,MotherCut=momCuts,DecayDescriptors=decays)
if pi0:
cp = cp.configurable(name+'Beauty2XGammaCombiner')
cp.ParticleCombiners = { '' : 'LoKi::VertexFitter' }
return Selection(name+'Beauty2XGamma',Algorithm=cp,RequiredSelections=inputs)
def makeLambda2X(name, decay, inputs, config):
'''Makes all Lambda -> X selections.'''
from copy import deepcopy
comboCuts = LoKiCuts(['SUMPT', 'AM'], config).code()
#flightCuts = ['BPVLTIME']
#if useIP:
# flightCuts += ['BPVIPCHI2','BPVDIRA']
#momCuts = [LoKiCuts(['VCHI2DOF'],config).code(),
momCuts = [has1TrackChild()]
momCuts = LoKiCuts.combine(momCuts)
b2x = CombineParticles(DecayDescriptors=decay,
CombinationCut=comboCuts,
MotherCut=momCuts)
b2x.ParticleCombiners = {'': 'LoKi::VertexFitter'}
return Selection(name, Algorithm=b2x, RequiredSelections=inputs)