Difference: SingleTopHiggsBBEventSel (12 vs. 13)

Revision 132013-08-22 - AndreyPopov

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META TOPICPARENT name="SingleTopHiggsBB"

Reference event selection for th(bb) analyses

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Transverse momentum is greater that 20 GeV/c 1 reco::PFCandidate::pt() > 20.
$\vert\eta\vert < 2.5$ 1 fabs(PFCandidate::eta()) < 2.5
$\rho$-corrected relative isolation with cone size 0.3 is smaller than 0.15 1 Non-trivial to implement; description is to be added
Deleted:
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Transverse impact parameter w.r.t. to the first primary vertex is smaller than 0.2 cm 2 Applied in module pfMuonsFromVertex
Longitudinal distance to the first primary vertex is smaller than 0.5 cm 2
  1 This selection is inherited from TWikiTopRefEventSel.
Changed:
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2 Default selection of PFBRECO applied in module pfElectronsFromVertex.
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In default PFBRECO configuration module pfElectronsFromVertex requires electrons to be compatible with the first primary vertex. Such a behaviour is not recommended and should be prevented with the following modifications:
  process.pfElectronsFromVertex.d0Cut = 9999.
  process.pfElectronsFromVertex.d0SigCut = 9999.
  process.pfElectronsFromVertex.dzCut = 9999.
  process.pfElectronsFromVertex.dzSigCut = 9999.
 

Tight electrons

Line: 196 to 202
 
Transverse momentum is greater that 10 GeV/c 3 reco::PFCandidate::pt() > 10.
$\vert\eta\vert<2.5$ 3 fabs(reco::PFCandidate::eta()) < 2.5
$\Delta\beta$-corrected relative isolation with cone size 0.4 is smaller than 0.2 4 Can be implemented with module pfIsolatedMuons as described in 4
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Transverse impact parameter w.r.t. to the first primary vertex is smaller than 0.2 cm 5 Applied in module pfMuonsFromVertex
Longitudinal distance to the first primary vertex is smaller than 0.5 cm 5
  1 Recommended in SWGuideMuonId.
Line: 212 to 216
  pfIsolatedMuons.isolationCut = 0.2
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5 Default selection of PFBRECO applied in module pfMuonsFromVertex.
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In default configuration of PFBRECO muons are checked for compatibility with first primary vertex, albeit these requirements are not a part of the official definition of loose muons. The additional selection should be switched off by setting
  process.pfMuonsFromVertex.d0Cut = 9999.
  process.pfMuonsFromVertex.d0SigCut = 9999.
  process.pfMuonsFromVertex.dzCut = 9999.
  process.pfMuonsFromVertex.dzSigCut = 9999.
 

Tight muons

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$\vert\eta\vert<2.1$ fabs(eta) < 2.1
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Below the previous version of criteria is provided. It will be removed soon.

Particle Flow Muon ID isPFMuon
Muon Reconstruction Alghoritm ID isGlobalMuon
pT > 26 GeV
fabs(eta) < 2.1
normChi2 < 10
track()->hitPattern().trackerLayersWithMeasurement() > 5
recoMu.globalTrack()->hitPattern().numberOfValidMuonHits() > 0
fabs( muon.vertex().z() - PV.z()) < 0.5
muon.innerTrack()->hitPattern().numberOfValidPixelHits() > 0
numberOfMatchedStations() > 1
relIso < 0.12, cone 0.4
 

Jets

It is recommended to use AK5 PF jets.

 
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