LHC TOP WG meeting

Name: LHC TOP WG meeting
Start: 2023-06-05T13:00:00+02:00
End: 2023-06-07T15:45:00+02:00
Location: CERN

5 Jun 2023, 13:00 → 7 Jun 2023, 15:45 Europe/Zurich

40/S2-D01 - Salle Dirac (CERN)

40/S2-D01 - Salle Dirac

CERN

115

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Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna), Maria Aldaya Martin (DESY), Wolfgang Wagner (Bergische Universitaet Wuppertal (DE))

Description

This periodic open meeting of the LHC TOP Working Group takes place twice a year at CERN. The meeting provides a forum for discussion between experimentalists and theorists on the latest developments in top quark physics. Everybody is welcome to attend; please register using the link below.

The meeting is planned to be hybrid (in-person + zoom).

Meeting rooms
In the course of the meeting we will use two different meeting rooms at CERN.
MONDAY (all sessions) Salle Bohr (room 40/S2-B01)
TUESDAY (all sessions) Salle Dirac (room 40/S2-D01)
WEDNESDAY (all sessions) Salle Dirac (room 40/S2-D01)

Recordings of the sessions are available below.

Registration

LHCtopWG meeting

67511793575

Maria Aldaya Martin

Join via phone

Monday 5 June
- 1
  
  Introduction
  
  Speakers: Prof. Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna), Maria Aldaya Martin (DESY), Wolfgang Wagner (Bergische Universitaet Wuppertal (DE))
  
  Intro_Open_Meeting_June_5_2023.pdf
  
  Poll for attending the dinner on Tuesday, June 6
  
  Top2023_Advertising.pdf
- 13:20
  
  Discussion
- 2
  
  Common MC settings and other LHCtopWG activities
  
  Speakers: Giulia Negro (Purdue University (US)), Reinhard Schwienhorst (Michigan State University (US))
  
  commonMC_LHCtopWG_5June2023_Negro.pdf
- 13:50
  
  Discussion
- 3
  
  ATLAS-Highlight-1: t-channel cross section measurement
  
  Speaker: Joshua Aaron Reidelsturz (Bergische Universitaet Wuppertal (DE))
  
  tchannel_LHCWG.pdf
- 14:20
  
  Discussion
- 4
  
  ATLAS-CMS comparison: tt cross sections in Run3
  
  Speakers: Giovanni Guerrieri (Universita degli Studi di Udine (IT)), Giovanni Guerrieri (INFN - National Institute for Nuclear Physics), Joscha Knolle (Ghent University (BE))
  
  JK_230605_ttbar_run3_v6.pdf
- 14:50
  
  Discussion
- 5
  
  CMS-Highlight-1: ttbb inclusive and differential cross sections, including ATLAS+CMS ttbb modelling comparisons
  
  Speaker: Jan van der Linden (KIT - Karlsruhe Institute of Technology (DE))
  
  OpenLHCTopWG-ttbb-JvdL.pdf
- 15:30
  
  Discussion
- 15:40
  
  Coffee break
- Mini-session: News about four top-quarks
  - 6
    
    ATLAS-CMS comparison: latest 4top results
    
    Speakers: Niels Van Den Bossche (Ghent University (BE)), Zhi Zheng (SLAC National Accelerator Laboratory (US))
    
    Four_Top_CMS+ATLAS.pdf
  - 16:40
    
    Discussion
  - 7
    
    On the BSM reach of 4top production at the LHC
    
    2302.08281 [hep-ph]
    
    Speakers: Panagiotis Stylianou, Panagiotis Stylianou (CERN)
    
    four_top_bsm_reach_lhc.pdf
  - 17:10
    
    Discussion
  - 8
    
    4top resummation at threshold
    
    2212.03259 [hep-ph]
    
    Speaker: Anna Kulesza (University of Muenster)
    
    topwg23.pdf
  - 17:40
    
    Discussion
Tuesday 6 June
- Mini-session: Theory advancements on top-quark mass
  - 9
    
    Investigation of scale dependence in the MSR and MSbar top mass schemes for the tt invariant mass differential xsec using LHC data
    
    https://arxiv.org/abs/2301.03546
    
    Speaker: Dr Toni Makela (NCBJ)
    
    investigation_of_scale_dependence_in_MSR_and_MSbar.pdf
  - 09:20
    
    Discussion
  - 10
    
    New top mass calibration results for inclusive and differential top quark mass observables
    
    Speaker: Andre Hoang
    
    Hoang-mt-Calibration-Update.pdf
  - 09:50
    
    Discussion
  - 11
    
    Phenomenological analysis of LHC ttbar data at NNLO accuracy using the MATRIX framework
    
    Speakers: Oleksandr Zenaiev (Hamburg University), Oleksandr Zenaiev
    
    Zenaiev-LHCtopWG-Jun23.pdf
  - 10:20
    
    Discussion
  - 11:00
    
    Coffee break
  - 12
    
    Linear power correction for single top production
    
    2302.02729 [hep-ph]
    
    Speaker: Melih Arslan Ozcelik (KIT - Karlsruhe Institute of Technology (DE))
    
    TopLHCWG23_OZCELIK.pdf
  - 11:40
    
    Discussion
  - 13
    
    ML approaches for parameter reweighting in MC samples for top production
    
    Speaker: Valentina Guglielmi (Deutsches Elektronen-Synchrotron (DE))
    
    LHC-Top-WG.pdf
  - 12:10
    
    Discussion
  - 14
    
    Thoughts on using ML methods to improve the understanding of ATLAS and CMS systematics
    
    Speaker: Jan Kieseler (CERN)
    
    20230606_ML_discuss.pdf
  - 12:30
    
    Discussion
  - 15
    
    Informal discussion on status of tt threshold corrections
    
    Speakers: Andre Hoang, Prof. Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna)
    
    Hoang-threshold-issues.pdf
    
    Hoang-threshold-issues.ppt
- 13:05
  
  Lunch break
- 16
  
  ATLAS-Highlight-2: Search for charged lepton flavour violation in top quark decays
  
  Speaker: Jacob Julian Kempster (University of Sussex (GB))
  
  JKempster_TopCLFV_LHCTOPWG_6June23.pdf
- 14:50
  
  Discussion
- 17
  
  SMEFT top decay + entanglement
  
  2210.09330 [hep-ph]
  
  Speaker: Claudio Severi (Universita e INFN, Bologna (IT))
  
  topwg.pdf
- 15:20
  
  Discussion
- 18
  
  Quantum discord and steering in top quarks at the LHC
  
  2209.03969 [quant-ph]
  
  Speakers: Juan Ramon Munoz De Nova, Yoav Afik (CERN)
  
  Quantum_Tops___LHC_Top_WG.pdf
- 15:50
  
  Discussion
- 19
  
  ATLAS-Highlight-3: substructure
  
  Speaker: Federica Fabbri (University of Glasgow (GB))
  
  LHCTopWG.pdf
- 16:20
  
  Discussion
- 20
  
  Opportunities for BSM physics in top final states at a future e+e- factory
  
  Speaker: Roberto Franceschini (Rome 3 U.)
  
  Top LHC WG ECFA-WG1-SRCH.pdf
- 16:45
  
  Discussion
- 19:00
  
  Dinner
Wednesday 7 June
- 21
  
  ATLAS-CMS comparison: latest ttW results
  
  Speakers: Carlos Vico Villalba (Universidad de Oviedo (ES)), Marcel Niemeyer (Georg August Universitaet Goettingen (DE))
  
  LHC_Top_WG_ttW_latest_results.pdf
- 10:30
  
  Discussion
- 22
  
  Status/Update NNLO calculation in ttW
  
  Speakers: Chiara Savoini (University of Zurich), Chiara Savoini
  
  ttW_talk_TOPWG_Savoini.pdf
- 11:00
  
  Discussion
- 11:10
  
  Lunch break
- Mini-session: EFT
  - 23
    
    CMS-Highlight-2: Probing EFT models using ttX in multiple lepton final states
    
    Speaker: Reza Goldouzian (University of Notre Dame (US))
    
    2023_05_LHCTOPWG_Reza.pdf
  - 13:20
    
    Discussion
  - 24
    
    ATLAS+CMS comparison: latest results on FCNC (latest tgamma result from CMS, latest results from ATLAS)
    
    Speakers: Gholamhossein Haghighat (Institute for Research in Fundamental Sciences (IR)), Wei-Ming Yao (Lawrence Berkeley National Lab. (US))
    
    Presentation.pdf
  - 13:50
    
    Discussion
  - 25
    
    Simultaneous CTEQ-TEA extraction of PDFs and SMEFT parameters from jet and tt data
    
    https://arxiv.org/abs/2211.01094
    
    Speaker: Dr TIMOTHY J HOBBS (Argonne National Laboratory)
    
    Hobbs_TOPWG-23.pdf
  - 14:20
    
    Discussion
  - 26
    
    The top quark legacy of the LHC Run2 for PDF and SMEFT analyses
    
    https://arxiv.org/abs/2303.06159
    
    Speaker: Dr Juan Rojo (VU Amsterdam and Nikhef)
    
    rojo-SMEFTpdfs-LHCtopWG.pdf
  - 14:50
    
    Discussion
  - 14:55
    
    Joint discussion on all EFT contributions
- 27
  
  CMS-Highlight-3: evidence for tWZ production in multilepton final states
  
  Speaker: Alessia Saggio (Deutsches Elektronen-Synchrotron (DE))
  
  LHCTopWG_tWZ_final.pdf
- 15:35
  
  Discussion