All hadronic ttbb analysis

Theory information

Papers and other publications

ATLAS information

KLFitter information

Monte Carlo samples:

*mc16_13TeV.411068.PhPy8EG_A14NNPDF23_NNPDF30ME_ttbb4F_PhOL_hdampHThalf_semilep.deriv.DAOD_TOPQ1.e6765_e5984_a875_r9364_r9315_p3598_tid15796803_00 *mc16_13TeV.411069.PhPy8EG_A14NNPDF23_NNPDF30ME_ttbb4F_PhOL_hdampHThalf_dilep.deriv.DAOD_TOPQ1.e6784_e5984_a875_r9364_r9315_p3598_tid15796808_00 *mc16_13TeV.411070.PhPy8EG_A14NNPDF23_NNPDF30ME_ttbb4F_PhOL_hdampHThalf_allhad.deriv.DAOD_TOPQ1.e6938_e5984_a875_r9364_r9315_p3654_tid15875824_00

Monte Carlo samples request:

Git repository analyses code and internal Note

  • Gitlab Margherita's
repository (see also for documentation): https://gitlab.cern.ch/mspalla/analysis_ttbballhad/tree/master

LHCPhysics Web Page links

Analysis ttbb Event selection

Preselection

Cut in config file Description
INITIAL framework default
GRL GRL used: see below
PRIVTX Primary vertex (framework default)
GOODCALO framework default, probably 'no calorimeter errors'
NOBADMUON framework default
TTBB_TTBAR_VETO remove ttbb events from ttbar MC to avoid double counting, acts on parton-level
CUT_MC_WEIGHT remove MC events with too large event weight (w>1000)
EL_N 25000 == 0 No electrons with pt>25 GeV
MU_N 25000 == 0 No muons with pt>25 GeV
MET < 60000 Missing Et < 60 GeV
JET_N 25000 >= 8 At least 8 jets of pt>25 GeV and abs(eta)<2.5

Good Run List (GRL) and PileUp reweighting files used:

Year files
2018 PRWConfigFiles_FS dev/AnalysisTop/PileupReweighting/user.iconnell.Top.PRW.MC16e.FS.v2/prw.merged.root
PRWConfigFiles_AF dev/AnalysisTop/PileupReweighting/user.iconnell.Top.PRW.MC16e.AF.v2/prw.merged.root
PRWActualMu_FS GoodRunsLists/data18_13TeV/20190318/physics_25ns_Triggerno17e33prim.actualMu.OflLumi-13TeV-010.root
PRWActualMu_AF GoodRunsLists/data18_13TeV/20190318/physics_25ns_Triggerno17e33prim.actualMu.OflLumi-13TeV-010.root
PRWLumiCalcFiles GoodRunsLists/data18_13TeV/20190318/ilumicalc_histograms_None_348885-364292_OflLumi-13TeV-010.root
2017 PRWConfigFiles_FS dev/AnalysisTop/PileupReweighting/user.iconnell.Top.PRW.MC16d.FS.v2/prw.merged.root
PRWConfigFiles_AF dev/AnalysisTop/PileupReweighting/user.iconnell.Top.PRW.MC16d.AF.v2/prw.merged.root
PRWActualMu_FS GoodRunsLists/data17_13TeV/20180619/physics_25ns_Triggerno17e33prim.actualMu.OflLumi-13TeV-010.root
PRWActualMu_AF GoodRunsLists/data17_13TeV/20180619/physics_25ns_Triggerno17e33prim.actualMu.OflLumi-13TeV-010.root
PRWLumiCalcFiles GoodRunsLists/data17_13TeV/20180619/physics_25ns_Triggerno17e33prim.lumicalc.OflLumi-13TeV-010.root
2016/15 PRWConfigFiles_FS dev/AnalysisTop/PileupReweighting/user.iconnell.Top.PRW.MC16a.FS.v2/prw.merged.root
PRWConfigFiles_AF dev/AnalysisTop/PileupReweighting/user.iconnell.Top.PRW.MC16a.AF.v2/prw.merged.root
PRWLumiCalcFiles GoodRunsLists/data15_13TeV/20170619/PHYS_StandardGRL_All_Good_25ns_276262-284484_OflLumi-13TeV-008.root GoodRunsLists/data16_13TeV/20180129/PHYS_StandardGRL_All_Good_25ns_297730-311481_OflLumi-13TeV-009.root

2b2j trigger

  • Triggers used:
    • 2018: HLT_2j35_bmv2c1060_split_2j35_L14J15.0ETA25
    • 2017: HLT_2j25_gsc45_bmv2c1060_split_2j25_gsc45_boffperf_split_L14J15.0ETA25
    • 2016: HLT_2j35_bmv2c2060_split_2j35_L14J15.0ETA25
    • 2015: ??
  • Offline cut:
    • At least 4 jets of pt>55 GeV
    • At least 2 of these jets must be b-tagged (MV2c10 @ 60% WP)

7j trigger

  • Triggers used:
    • 2018 / 2017 / 2016: HLT_7j45_L14J15
    • 2015: ??
  • Offline cut:
    • At least 7 jets of pt>55 GeV

ttbar reconstruction in ttbb events

  • KLFitter 3-1-10, 1T Likelihood.
    • Alternative: chi2, parametric or not.
  • Latest summary: presentation at Top Reconstruction.
  • Merge request of KLFitter to athena: !37695
  • KLfitter Likelihood cut: log(L) > -50

Extra two b-jets reconstruction in ttbb events

Select in the event two extra b-jets with the largest b-tag weight (MV2c10 @ 60WP) among those not used by KLFitter

Background estimation done with the ABCD method

Independent variables used:

  • : number of b-tagged jets (MV2c10 @ 60% WP)
  • Where () is the mass of the 3 jets (2 light-jets) forming one of the top-quarks (Ws) in the ttbb events

Definitions of Control Region (CR) and Signal Region (SR) used in the ABCD method

 
CR A CR B
CR C SR D

List of meetings at MPP

| Date | Indico link

24/11/2021 https://indico.cern.ch/event/1070855/ Status update talk given by Nina in the Xsec meeting
17/11/2021 https://indico.cern.ch/event/1070854/ Definition of extra b-jets talk given by Teresa in Xsec. meeting
18/06/2021 https://indico.mpp.mpg.de/event/8260/ ABDC and new sample mj - MC studies (Nina)
02/06/2021 https://indico.cern.ch/event/1023083/ Status update talk given by Margherita in the top Xsec meeting
22/04/2021 https://indico.cern.ch/event/1029834/ 1T KLfitter and Chi2 results presented by Margherita in the top Reco meeting
17/03/2021 https://indico.mpp.mpg.de/event/8030 1T KLFitter results (Margherita) - Comparison of correction ration-values(Nina)
03/03/2021 https://indico.mpp.mpg.de/event/8000 ATLAS style macro, ABCD/BDT methods (Nina)
24/02/2021 https://indico.mpp.mpg.de/event/7917/ MadGraph (Teresa), Status 1T +Uncertainty on the efficiency (Margherita) ABCD distributions (Nina)
17/02/2021 https://indico.mpp.mpg.de/event/7953/ ABCD distributions (Nina)
10/02/2021 https://indico.mpp.mpg.de/event/7918/ MadGraph Stsudies (teresa), ABCD studies (Nina)
03/02/2021 https://indico.mpp.mpg.de/event/7917/ Status 1T KLfitter (Margherita), ABCD distributions (Nina)
27/01/2021 https://indico.mpp.mpg.de/event/7897/ ABCD studies (Nina)
20/01/2021 https://indico.mpp.mpg.de/event/7866/ -
13/01/2021 https://indico.mpp.mpg.de/event/7848/ -
18/12/2020 https://indico.mpp.mpg.de/event/7826/ Single-T results (Margherita); ttbar background-studies and TOPQ4 derivation (Nina)
04/12/2020 https://indico.mpp.mpg.de/event/7757/ Single T results (Margherita); pt cut studies and continuous btagging (Nina)
26/11/2020 https://indico.mpp.mpg.de/event/7718/ Meeting with Mike Fenton
25/11/2020 https://indico.mpp.mpg.de/event/7756/ -
18/11/2020 https://indico.mpp.mpg.de/event/7698/ -
11/11/2020 https://indico.mpp.mpg.de/event/7697/ Bug fix (Margherita); et_truthParton studies first ABCD bckg studies (Nina)
28/10/2020 https://indico.mpp.mpg.de/event/7664/ jet_truthParton studies (Nina)
21/10/2020 https://indico.mpp.mpg.de/event/7663/ -
14/10/2020 https://indico.mpp.mpg.de/event/7646/ -
02/10/2020 https://indico.mpp.mpg.de/event/7599/ -
23/09/2020 https://indico.mpp.mpg.de/event/7598/ -
16/09/2020 https://indico.mpp.mpg.de/event/7572/ -
09/09/2020 https://indico.mpp.mpg.de/event/7571/ -
02/09/2020 https://indico.mpp.mpg.de/event/7559/ -
31/07/2020 https://indico.mpp.mpg.de/event/7535/ -
24/07/2020 https://indico.mpp.mpg.de/event/7525/ -
14/07/2020 https://indico.mpp.mpg.de/event/7497/ -
29/06/2020 https://indico.mpp.mpg.de/event/7467/ -
22/06/2020 https://indico.mpp.mpg.de/event/7456/ -
12/06/2020 https://indico.mpp.mpg.de/event/7429/ -
29/05/2020 https://indico.mpp.mpg.de/event/7407/ Sven's talk on the production of Multi-b background events
20/05/2020 https://indico.mpp.mpg.de/event/7389/ -
13/05/2020 https://indico.mpp.mpg.de/event/7373/ -
06/05/2020 https://indico.mpp.mpg.de/event/7344/ -
27/04/2020 https://indico.mpp.mpg.de/event/7328/ -
15/04/2020 https://indico.mpp.mpg.de/event/7300/ -
06/04/2020 https://indico.mpp.mpg.de/event/7285/ Full stat. KLfitter vs Chi2 studies (Margherita) - Full stat. Chi2 studies (NIna)
30/03/2020 https://indico.mpp.mpg.de/event/7274/ Sigma over RMT in chi2 studies
23/03/2020 https://indico.mpp.mpg.de/event/7259/ Further chi2 studies (Margherita) - Initial chi2 studies (Nina)
18/03/2020 https://indico.mpp.mpg.de/event/7248/ KLfitter 408 vs 3210 thruth comparisons and initial chi2 studies (Margherita)
10/03/2020 https://indico.mpp.mpg.de/event/7230/ KLfitter efficiency/purity studies (Margherita) - KLfitter option definitions (Nina)
25/02/2020 https://indico.mpp.mpg.de/event/7214/ KLFitter Time consumption, trigger
18/02/2020 https://indico.mpp.mpg.de/event/7205/ KLFitter, b-jet investigations
04/02/2020 https://indico.mpp.mpg.de/event/7183/ -
20/01/2020 https://indico.mpp.mpg.de/event/7152/ -
10/01/2020 https://indico.mpp.mpg.de/event/7127/ -
04/11/2019 https://indico.mpp.mpg.de/event/6987/ -
23/10/2019 https://indico.mpp.mpg.de/event/6920/ KLFitter, Multijet-Bkg
02/10/2019 https://indico.mpp.mpg.de/event/6895/ Data-MC comparison
25/09/2019 https://indico.mpp.mpg.de/event/6885/ Data-MC comparison
10/09/2019 https://indico.mpp.mpg.de/event/6846/ Status update rehearsal talk for the Top Xsec meeting
08/07/2019 https://indico.mpp.mpg.de/event/6538/ Status update rehearsal talk for the top Xsec meeting
28/06/2019 https://indico.mpp.mpg.de/event/6534/ Cutflow plots
31/05/2019 https://indico.mpp.mpg.de/event/6508/ mass resolution, leptonic ttbb talk, mistagging
10/05/2019 https://indico.mpp.mpg.de/event/6482/ KLFitter, truth matching, purity
03/05/2019 https://indico.mpp.mpg.de/event/6477/ KLFitter
15/04/2019 https://indico.mpp.mpg.de/event/6407/ --
12/03/2019 https://indico.mpp.mpg.de/event/6353/ -
18/02/2019 https://indico.mpp.mpg.de/event/6323/ Trigger comparison
04/02/2019 https://indico.mpp.mpg.de/event/6299/ Trigger comparison
28/01/2019 https://indico.mpp.mpg.de/event/6289/ Trigger efficiency
18/01/2019 https://indico.mpp.mpg.de/event/6269/ Trigger efficiency
14/12/2018 https://indico.mpp.mpg.de/event/6181/ Trigger efficiency
27/11/2018 https://indico.mpp.mpg.de/event/6141/ Update: Trigger, derivaions
12/10/2018 https://indico.mpp.mpg.de/event/6081/ Trigger, derivations
03/08/2018 https://indico.mpp.mpg.de/event/6005/ Summary talk Top X-Sec Meeting
27/06/2018 https://indico.mpp.mpg.de/event/5820/ -
19/06/2018 https://indico.mpp.mpg.de/event/5920/ Sven: Comparison Sherpa and Powhel, Interfacing Powhel with EvtGen +Pythia8
18/05/2018 https://indico.mpp.mpg.de/event/5881/ Meeting with the PowHel people
07/05/2018 https://indico.mpp.mpg.de/event/5869/ Update: Powheg vs. Sherpa at central eta
30/04/2018 https://indico.mpp.mpg.de/event/5862/ Powheg vs. Sherpa at central eta
16/04/2018 https://indico.mpp.mpg.de/event/5835/ Sherpa, Sherpa vs. Powheg+Pythia8
27/03/2018 https://indico.mpp.mpg.de/event/5811/ Sherpa Update
20/03/2018 https://indico.mpp.mpg.de/event/5800 Sherpa Update
09/03/2018 https://indico.mpp.mpg.de/event/5782 Plots with Sherpa Sample
02/03/2018 https://indico.mpp.mpg.de/event/5767 MC Generator record

Link to the MPP Twiki page

* The link to the MPP Twiki page is: https://twiki.mpp.mpg.de/bin/view/Main/Barilla

-- TeresaBarillari - 2021-05-17


This topic: Sandbox > WebPreferences > AllHadttbb
Topic revision: r33 - 2021-11-25 - TeresaBarillari
 
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