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HH -> bbtautau working TWiki for the full Run-2 resonant UL analysis

Documentation

Analysis Note : AN-18-121 GitLab repository
Paper : HIG-20-010 GitLab repository
CADI line: HIG-20-010
Twiki for HIG-20-010 Q/A: twiki link
Review HN for HIG-20-010 HN link

Instructions how to use GitLab repository for the documentation are here

Talks in subgroup/working meetings

Data and MC samples:

Google Sheet

Baseline selection

Triggers

2016

Recorded luminosity: 35.92 fb-1

Recommended tau triggers: presentation

Channel	HLT path	Recorded lumi (fb-1)	First run	Last run	Lumi correction factor	Comments
etauh	HLT_Ele25_eta2p1_WPTight_Gsf	35.91821949	281613	284044	-
mutauh	HLT_IsoMu22	28.56437318	273158	284044	0.795221971
	HLT_IsoMu22_eta2p1	33.18226211	274954	284044	0.923782353
	HLT_IsoTkMu22	28.5643731	273158	284044	0.795221971
	HLT_IsoTkMu22_eta2p1	33.18226211	274954	284044	0.923782353
	HLT_IsoMu19_eta2p1_LooseIsoPFTau20	35.91821949	273158	284044	-	Hidden from the name: tau eta restriction: abs(eta) < 2.1
	HLT_IsoMu19_eta2p1_LooseIsoPFTau20_SingleL1	35.91821949	273158	284044	-	tau eta restriction: abs(eta) < 2.5, using abs(eta) < 2.1 for matching
tauhtauh	HLT_DoubleMediumIsoPFTau35_Trk1_eta2p1_Reg	27.26759111	273158	280385	-	run B to G
	HLT_DoubleMediumCombinedIsoPFTau35_Trk1_eta2p1_Reg_v	8.65062838	281613	284044	-	run H

2017

Recorded luminosity: 41.52915206 fb-1

Recommended tau triggers: github

Channel	HLT path	Recorded lumi (fb-1)	First run	Last run	Lumi correction factor	Comments
etauh	HLT_Ele32_WPTight_Gsf_L1DoubleEG	14.405251715	297050	302025	-	for Run < 302026 requiring hltEGL1SingleEGOrFilter twiki
	HLT_Ele32_WPTight_Gsf	27.12209722	302026	306460	-	for Run >= 302026 and MC
	HLT_Ele35_WPTight_Gsf	41.52734893	297050	306460	-
	HLT_Ele24_eta2p1_WPTight_Gsf_LooseChargedIsoPFTau30_eta2p1_CrossL1	41.52734893	297050	306460	-
mutauh	HLT_IsoMu24	38.04647624	297050	306460	0.91613901
	HLT_IsoMu27	41.52734893	297050	306460	-
	HLT_IsoMu20_eta2p1_LooseChargedIsoPFTau27_eta2p1_CrossL1	41.52734893	297050	306460	-
tauhtauh	HLT_DoubleTightChargedIsoPFTau35_Trk1_TightID_eta2p1_Reg	41.52734893	297050	306460	-
	HLT_DoubleMediumChargedIsoPFTau40_Trk1_TightID_eta2p1_Reg	41.52734893	297050	306460	-
	HLT_DoubleTightChargedIsoPFTau40_Trk1_eta2p1_Reg	41.52734893	297050	306460	-
tauhtauh (VBF only)	HLT_VBF_DoubleLooseChargedIsoPFTau20_Trk1_eta2p1_Reg	27.122097216	302026	306460	0.65308574	run D-F

2018

Recorded luminosity: 59.74056520 fb-1

Recommended tau triggers: github

Channel	HLT path	Recorded lumi (fb-1)	First run	Last run	Lumi correction factor	Comments
etauh	HLT_Ele32_WPTight_Gsf	59.73596937	315257	325172	-
	HLT_Ele35_WPTight_Gsf	59.73596937	315257	325172	-
	HLT_Ele24_eta2p1_WPTight_Gsf_LooseChargedIsoPFTau30_eta2p1_CrossL1	17.68288714	315257	317508	-	for Run < 317509
	HLT_Ele24_eta2p1_WPTight_Gsf_LooseChargedIsoPFTauHPS30_eta2p1_CrossL1	42.05308223	317509	325172	-	for Run >= 317509 and MC
mutauh	HLT_IsoMu24	59.73596937	315257	325172	-
	HLT_IsoMu27	59.72780434	315257	325172	-
	HLT_IsoMu20_eta2p1_LooseChargedIsoPFTau27_eta2p1_CrossL1	17.68288714	315257	317508	-	for Run < 317509
	HLT_IsoMu20_eta2p1_LooseChargedIsoPFTauHPS27_eta2p1_CrossL1	42.05308223	317509	325172	-	for Run >= 317509 and MC
tauhtauh	HLT_DoubleTightChargedIsoPFTau35_Trk1_TightID_eta2p1_Reg	17.68288714	315257	317508	-	for Run < 317509
	HLT_DoubleMediumChargedIsoPFTau40_Trk1_TightID_eta2p1_Reg	17.68288714	315257	317508	-	for Run < 317509
	HLT_DoubleTightChargedIsoPFTau40_Trk1_eta2p1_Reg	17.68288714	315257	317508	-	for Run < 317509
	HLT_DoubleMediumChargedIsoPFTauHPS35_Trk1_eta2p1_Reg	42.05308223	317509	325172	-	for Run >= 317509 and MC
tauhtauh (VBF only)	HLT_VBF_DoubleLooseChargedIsoPFTau20_Trk1_eta2p1	17.110557111	315257	317488	-	for Run < 317509
	HLT_VBF_DoubleLooseChargedIsoPFTauHPS20_Trk1_eta2p1	42.053082232	317527	325172	0.990342	for Run >= 317509 and MC

HTT selection

Pair assessment

See HTT working twiki

MC matching

Same as HTT MC matching twiki, with two differences (since all tau-related corrections are calculated starting from NanoAODs so we stay aligned to NanoAODs):

- we require a dR<0.3 match (instead of 0.2) between genParticle and reco::Tau

- we require a minimum deltaPt for the match: < 1.0 for hadronic tau products matching, < 0.5 for e&mu matching. The deltaPt is computed as (gen_pT - reco_pT) / gen_pT , see here for exact definition.

For more info on NanoAODs see nanoAOD cmssw config

Baseline selections

General: Offline leptons are required to be matched to a trigger leg of the same type, to be kinematically accessible for the trigger(s) that fired and to be at the efficiency plateau computed as a function of the corresponding trigger leg: each offline object should have

pT > pT_HLTthreshold + offset

where offset = 1 GeV for muons, 1 GeV for electrons and 5 GeV for tauh.

---

> check eta thresholds for single lepton triggers

etauh:

Object	Year	HLT path	Selection
e	all	all	Tight MVA ID (mvaEleID-Fall17-iso-V2-wp80)
			abs(dxy) < 0.045 cm, abs(dz) < 0.2 cm
	2016	single-e	pT > 26 GeV, abs(eta)<2.1
	2017	single-e	pT > 33 GeV, abs(eta)<2.1
		cross etauh	pT > 25 GeV, abs(eta)<2.1
	2018	single-e	pT > 33 GeV, abs(eta)<2.1
		cross etauh	pT > 25 GeV, abs(eta)<2.1
tauh	all	all	decayModeFindingNewDMs > 0.5 (DM0, DM1, DM10, DM11)
			abs(dz) < 0.2 cm
			DeepTauv2p1: Medium VSjet, Tight VSmu, VLoose VSe
	2016	single-e	pT > 20 GeV, abs(eta)<2.3
	2017	single-e	pT > 20 GeV, abs(eta)<2.3
		cross etauh	pT > 35 GeV, abs(eta)<2.1
	2018	single-e	pT > 20 GeV, abs(eta)<2.3
		cross etauh	pT > 35 GeV, abs(eta)<2.1
Pair	all	all	deltaR (e,tauh) >0.5 , OS

mutauh:

Object	Year	HLT path	Selection
mu	all	all	Tight Muon ID and Iso < 0.15
			abs(dxy) < 0.045 cm, abs(dz) < 0.2 cm
	2016	single-mu	pT > 23 GeV, abs(eta)<2.1
		cross mutauh	pT > 20 GeV, abs(eta)<2.1
	2017	single-mu	pT > 25 GeV, abs(eta)<2.1
		cross mutauh	pT > 21 GeV, abs(eta)<2.1
	2018	single-mu	pT > 25 GeV, abs(eta)<2.1
		cross mutauh	pT > 21 GeV, abs(eta)<2.1
tauh	all	all	decayModeFindingNewDMs > 0.5 (DM0, DM1, DM10, DM11)
			abs(dz) < 0.2 cm
			DeepTauv2p1: Medium VSjet, Tight VSmu, VLoose VSe
	2016	single-mu	pT > 20 GeV, abs(eta)<2.3
		cross mutauh	pT > 25 GeV, abs(eta)<2.1
	2017	single-mu	pT > 20 GeV, abs(eta)<2.3
		cross mutauh	pT > 32 GeV, abs(eta)<2.1
	2018	single-mu	pT > 20 GeV, abs(eta)<2.3
		cross mutauh	pT > 32 GeV, abs(eta)<2.1
Pair	all	all	DR (mu,tauh) >0.5 , OS

tauhtauh

Object	Year	HLT path	Selection
both tauh	all	all	decayModeFindingNewDMs > 0.5 (DM0, DM1, DM10, DM11)
			abs(dz) < 0.2 cm
			DeepTauv2p1: Medium VSjet, VLoose VSmu, VVLoose VSe
	2016	di-tauh	pT > 40 GeV, abs(eta)<2.1
	2017	di-tauh	pT > 40 GeV, abs(eta)<2.1
		VBF H->tauhtauh	pT > 25 GeV, abs(eta)<2.1
	2018	di-tauh	pT > 40 GeV, abs(eta)<2.1
		VBF H->tauhtauh	pT > 25 GeV, abs(eta)<2.1
Pair	all	all	DR (tauh,tauh) >0.5, OS

third lepton veto

Reject events that have an electron or a muon, in addition to the signal electron (muon) for the eTau (muTau) channel, that passes the following selection:

Electron: pt > 10 GeV, abs(eta) < 2.5 ,abs(dz) < 0.2, abs(dxy) < 0.045, ( passes mvaEleID-Fall17-iso-V2-wp90 OR (passes mvaEleID-Fall17-noIso-V2-wp90 AND pfRelIso04 < 0.3) )

Muon: pt > 10 GeV, abs(eta) < 2.4, abs(dz) < 0.2, abs(dxy) < 0.045, passes Medium Muon ID or Tight Muon ID, pfRelIso04 < 0.3

Jets selection

bjet candidates requirements: pT > 20 GeV and abs(eta) < 2.4(2.5) for 2016 (2017/18), Tight jetID, Loose pileupID for jets with pt < 50 GeV

VBF jet candidates requirements: pT > 30 GeV and abs(eta) < 4.7, Tight jetID, Loose pileup ID for jets with pt < 50 GeV

2017 noisy jet cleaning: remove jets that have 20 < pt < 50 && abs(eta) > 2.65 && abs(eta) < 3.139

Jets sorting:
The b-jets chosen are the two jets with the highest HH-Btag score, while among the remaining jets all possible pairs are built and the pair with highest invariant mass is chosen as the VBF-jets pair.
OUTDATED: The old method of jet ordering is described in slide 6 (the actual btag discriminator used was DeepFlavour, not CSVv2)

MC corrections checklist

Correction	2016	2017	2018	Links
genuine tauh ES				TauIDRecommendationForRun2
e->tauh ES				TauIDRecommendationForRun2
mu->tauh ES				TauIDRecommendationForRun2
e->tauh fake rate SF				TauIDRecommendationForRun2
mu->tauh fake rate SF				TauIDRecommendationForRun2
genuine tau ID SF				TauIDRecommendationForRun2
tau trigger SF				github presentation
e/mu ID SF				github
e/mu trigger SF				github
VBF trigger weights		(re-do with DeepTauID)		presentation (2018)
L1 prefiring weigth			--	twiki
btag eff SF (DeepFlavour)				BtagRecommendation102X
Top pt reweighting				TopPtReweighting, hypernews
Pileup Jet ID SF				PileupJetID
DY weights				presentation
PU reweight	from TT samples	by groups of compatible samples	from TT samples

= Available
= Not needed
= Not available
= Preliminary
= Outdated

Systematic uncertainties

-- LouisAdrienPaulPortales - 2021-10-29