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 makeBs2XMuMu(name,
DecayDescriptor,
DaughterLists,
BsMassWin,
BsVCHI2DOF,
BsDIRA,
BsIPCHI2,
BsFDCHI2):
from Configurables import CombineParticles, OfflineVertexFitter
combinerName = "Combine" + name
_Bs = CombineParticles(combinerName)
_Bs.DecayDescriptor = DecayDescriptor
_Bs.CombinationCut = "ADAMASS('B_s0') < %(BsMassWin)s *MeV" % locals()
_Bs.MotherCut = " (VFASPF(VCHI2/VDOF) < %(BsVCHI2DOF)s)" \
"& (BPVDIRA > %(BsDIRA)s)" \
"& (BPVIPCHI2() < %(BsIPCHI2)s)" \
"& (BPVVDCHI2 > %(BsFDCHI2)s)" % locals()
# _Bs.ReFitPVs = True
# Set the OfflineVertexFitter to keep the 4 tracks
_Bs.addTool( OfflineVertexFitter )
_Bs.ParticleCombiners.update( { "" : "OfflineVertexFitter"} )
_Bs.OfflineVertexFitter.useResonanceVertex = False
return Selection(name,
Algorithm = _Bs,
RequiredSelections = DaughterLists)
def makeB2X(name, decay, inputs, config, useIP=True, resVert=True):
'''Makes all B -> X selections.'''
from copy import deepcopy
config = deepcopy(config)
if name.find('B02') >= 0 or name.find('NoIP') >= 0:
config['AM_MAX'] = '6000*MeV'
comboCuts = LoKiCuts(['SUMPT', 'AM'], config).code()
flightCuts = ['BPVLTIME', 'DZ1', 'DZ2']
if useIP: flightCuts += ['BPVIPCHI2', 'BPVDIRA']
momCuts = [
LoKiCuts(['VCHI2DOF'], config).code(),
has1TrackChild(),
hasTopoChildren(),
LoKiCuts(flightCuts, config).code()
]
momCuts = LoKiCuts.combine(momCuts)
b2x = CombineParticles(DecayDescriptors=decay,
CombinationCut=comboCuts,
MotherCut=momCuts)
if not resVert:
b2x = b2x.configurable(name + 'Beauty2CharmVertexFitter')
b2x.addTool(OfflineVertexFitter)
b2x.ParticleCombiners.update({"": "OfflineVertexFitter"})
b2x.OfflineVertexFitter.useResonanceVertex = False
return Selection(name, Algorithm=b2x, RequiredSelections=inputs)
def makeY2X(name,decay,inputs,config,vertex=True):
wm = ['in_range(%s,AM,%s)' % (config['MASS_MIN']['Y'],
config['MASS_MAX']['Y'])]
wm = '('+('|'.join(wm))+')'
comboCuts = [LoKiCuts(['SUMPT'],config).code(),wm]
comboCuts = LoKiCuts.combine(comboCuts)
momCuts = LoKiCuts(['VCHI2DOF','BPVDIRA'],config).code()
y2x = CombineParticles(DecayDescriptors=decay,CombinationCut=comboCuts,
MotherCut=momCuts)
if not vertex:
y2x = y2x.configurable(name+'B2MuMuXVertexFitter')
y2x.addTool(OfflineVertexFitter)
y2x.ParticleCombiners.update( { "" : "OfflineVertexFitter"} )
y2x.OfflineVertexFitter.useResonanceVertex = False
return Selection(name,Algorithm=y2x,RequiredSelections=inputs)
