Introduction

This page describes the detail of simple ntuple for TER (Tau Energy Resolution) study in Higgs to tautau to lephad analyses.

Please refere as standard analysis : https://twiki.cern.ch/twiki/bin/viewauth/AtlasProtected/HiggsToTauTauToLH2013Winter8TeV

Sample

Z->tautau embeeding sample:

  • group.phys-higgs.ysakurai.TER_ntuple.data12_8TeV.EMBLHIM.NTUP_TAU.p1462.v02/
( Original tau D3PD: data12_8TeV.period*.physics_Muons.PhysCont.NTUP_EMBLHIM.grp14_v02_r4697_p1462/ )

Z->tautau embedding (FTFP_BERT1) sample

  • group.phys-higgs.ysakurai.TER_ntuple.data12_8TeV.EMBLH_FTFP_BERT1.NTUP_TAU.p1462.v02/

Selection

Standard lep-had analysis preselection is applied except for tau object selection.

Electron

Completly same as standard lep-had analysis.

Muon

Completly same as standard lep-had analysis.

Tau

  • no offline Pt cut
  • truth visible tau Pt > 10GeV
  • BDT Medium ID
  • numTrack==1||numTrack==3
  • detector eta cut corresponding to prong
  • |charge| == 1
  • author==1||author==3
  • no eveto
  • no muon veto

Jet

Standard lep-had analysis cut is applied (Pt>30GeV).

Overlap Removal: muon -> electron -> tau(above selection) -> jet

Event selection

Standard Event Cleaning / Trigger Requirement / Dilepton veto

# of tau == 1 is "not" applied

Keep multiple tau events because tau pt cut is not applied here.

If you don't need such events, please simply apply tau_n==1 cut by hand.

In lepton + tau trigger case, "leading" tau pt > 25 GeV is applied

Variables

All energy variables is filled as GeV unit

Event

  • RunNumber
  • EventNumber
  • averageIntPerXing
  • NPV : number of primary vertex (Number of associated tracks >= 4 && Type == 1)
  • evt_tot_weight : total event weight (contained every event weight)
  • isOS : opposite sign bit between lepton and leading tau
  • isSS : same sign bit between lepton and leading tau
  • isSLT : single lepton trigger bit
  • isLTT : lepton + tau trigger bit (leading tau pt>25GeV is required)

Truth

  • true_tau_had_* : original hadronic tau
  • true_tau_lep_* : original leptonic tau
  • true_nu_had_* : neutrino from hadronic tau
  • true_nu_lep_* : vector sum of nu_tau and nu_lep
  • true_vis_tau_* : visible hadronic tau
  • true_vis_lep_* : lepton from leptonic tau

NOTE)

*_had_decay_mode : 0 -> 1prong , 1->3prong

*_lep_decay_mode : 0 -> electron , 1->muon

Lepton

lepton variables which is applied standard object selection

  • lep_type : 0 -> electron , 1 -> muon
  • lep_pt
  • lep_eta
  • lep_phi
  • lep_m
  • lep_charge

Tau

tau variables filled with vector type.

  • tau_n
  • tau_pt
  • tau_eta
  • tau_phi
  • tau_charge
  • tau_numTrack
  • tau_BDTJetScore
  • tau_BDTEleScore
  • tau_BDTMedium
  • tau_EleBDTMedium
  • tau_MuonVeto
If you want to have standard selected tau, need to apply following cuts:

tau_n==1

tau_pt->at(0) > 20.0

tau_EleBDTMedium->at(0)==1

tau_MuonVeto->at(0)==1

NOTE )

Once you apply EleBDTMedium cut, offline tau pt is automatically cut by 15.0GeV. (this is feature of original tau D3PD)

Jet

jet (>30GeV) variables filled with vector type.

  • jet_n
  • jet_pt
  • jet_eta
  • jet_phi
  • jet_m
  • jet_JVF
  • jet_MV1 : jet is b-tagged if jet_MV1 >0.7892

Missing Et

  • met_Et
  • met_phi
  • met_sumEt
  • met_Etx
  • met_Ety
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Topic revision: r3 - 2013-09-16 - unknown
 
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