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

Plots for the internal note.

  • A tag has been added to mark the version of the plots in AnalysisTopR21/PlotsForIntNote. Below is the list of tags:
    TAG Description
    Plots_v0 First version. Plots for all the KLFitter/Chi2 selections, with EMtopo, PFlow(pb) and PFlow(tag).

LHCPhysics Web Page links

Analysis Event selection

Preselection cuts applied in the analysis

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)
2B2J OR 7j TRIGGER see below
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 Pile-up reweighting

  • Below list of files used in the analysis:

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
PRWLumiCalcFiles: GoodRunsLists/data16_13TeV/20180129/PHYS_StandardGRL_All_Good_25ns_297730-311481_OflLumi-13TeV-009.root

B-jet trigger

  • 2b2j 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: ??
  • Applied offline cut:
    • At least 4 jets of pt>55 GeV
    • At least 2 of these jets must be b-tagged (MV2c10 @ 60% WP)

Jets trigger

  • 7j triggers used:
    • 2018 / 2017 / 2016: HLT_7j45_L14J15
    • 2015: ??
  • Applid offline cut:
    • At least 7 jets of pt>55 GeV

Reconstruction of the ttbar events in ttbb final state 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 given talks and meetings at MPP

| Date | Indico link

08/03/2022 https://indico.cern.ch/event/1136390/ Update talk given by Margherita in the Flavour Tagging Plenary Meeting
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

Edit | Attach | Watch | Print version | History: r38 < r37 < r36 < r35 < r34 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r38 - 2022-05-04 - TeresaBarillari
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    Sandbox All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2022 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
or Ideas, requests, problems regarding TWiki? use Discourse or Send feedback