LHC TOP WG meeting

Name: LHC TOP WG meeting
Start: 2025-11-05T14:00:00+01:00
End: 2025-11-07T14:00:00+01:00
Location: ZOOM only

5 Nov 2025, 14:00 → 7 Nov 2025, 14:00 Europe/Zurich

ZOOM only

Emanuele Re (Universita & INFN, Milano-Bicocca (IT)), Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna), Jose Enrique Palencia Cortezon (Universidad de Oviedo (ES)), Marcel Vos (IFIC Valencia (ES))

Description

This periodic open meeting of the LHC TOP Working Group takes place twice a year. The November '25 edition is fully online, via ZOOM. 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.

Recordings of the sessions will be available below once the meeting is over.

Support

lhctopwg-conveners@cern.ch

Registration

65270875878

Marcel Vos

Join via phone

Wednesday 5 November
- Wednesday
  - 1
    
    Introduction
    
    Speakers: Prof. Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna), Jose Enrique Palencia Cortezon (Universidad de Oviedo (ES)), Marcel Vos (IFIC Valencia (ES))
    
    introLHCtopWG_nov2025.pptx.pdf
  - 2
    
    Status of the top pole mass combination
    
    Speaker: Sebastian Wuchterl (CERN)
    
    mtpole_combination.pdf
  - 3
    
    Discussion of different approaches to break down the uncertainties in profile likelihood fits
    
    Speakers: Josh Bendavid (CERN), Dr Michele Pinamonti (Universita degli Studi di Udine (IT))
    
    Pinamonti_ErrorBreakdownATLASandCMS_5nov2025 (1).pdf
  - 4
    
    Differential cross-section measurements of coherent production of singly and doubly resonant top-quark in events with one lepton at √s = 13 TeV with the ATLAS detector
    
    https://arxiv.org/abs/2510.26476
    
    Speaker: Tadej Novak (Jozef Stefan Institute (SI))
    
    WbWb_semilep.pdf
  - 5
    
    A search for electroweak production in multileptonic final states at √s = 13 TeV with the ATLAS detector and bounds on effective field theory operators
    
    ATLAS-TOPQ-2019-18, https://arxiv.org/abs/2509.19038
    
    Speaker: Dongwon Kim (University of California Berkeley (US))
    
    LHC_TOPWG_ttwjEW_ttbarAsym_DongwonKim.pdf
- Coffee break
- Wednesday
  - 6
    
    Searching for top-philic heavy resonances in boosted four-top final states
    
    https://arxiv.org/abs/2507.05334
    
    Speaker: Luc DARME
    
    TopLHC_Darme_vpdf.pdf
  - 7
    
    CMS: Search for physics beyond the standard model in four and three top quark production events using proton-proton collisions at √s=13TeV
    
    CMS-PAS-TOP-24-008, https://cds.cern.ch/record/2944177?ln=en
    
    Speaker: Joscha Knolle (KIT - Karlsruhe Institute of Technology (DE))
    
    JK_251105_fourtop.pdf
  - 8
    
    Multi-top signals of vectorlike quarks at the LHC
    
    https://arxiv.org/abs/2508.14960
    
    Speaker: Elias Bernreuther (Heidelberg University)
Thursday 6 November
- Thursday
  - 9
    
    Observation of a cross-section enhancement near the production threshold in √s = 13 TeV collisions with the ATLAS detector
    
    ATLAS-CONF-2025-008
    
    Speaker: Janna Katharina Behr (Deutsches Elektronen-Synchrotron (DE))
    
    LHCTopWG_251106_KBehr.pdf
  - 10
    
    Precision predictions for off-shell top-quark pair production and decays
    
    Speaker: Jonas Lindert (University of Sussex)
    
    bb4l@NNLO_TopWG.pdf
  - 11
    
    Towards a Systematic Uncertainty Model for the bb4l Powheg Monte Carlo sample
    
    ATL-PHYS-PUB-2025-036
    
    Speaker: Katharina Voss (Universitaet Siegen (DE))
    
    KVoss_LHCTOPWG25_bb4l_syst.pdf
- Coffee break
- Thursday
  - 12
    
    Top hadrons and formation time
    
    Speaker: Yu-Jie Zhang
    
    20251106_ZH_ZhangYuJie.pdf
  - 13
    
    Measurement of the top-quark Yukawa coupling from production in the lepton+jets final state using collisions at √s = 13 TeV with the ATLAS detector
    
    ATLAS-TOPQ-2021-11, https://arxiv.org/abs/2509.16039
    
    Speaker: Supriya Sinha (Deutsches Elektronen-Synchrotron (DE))
    
    LHCTopWG2025_YtCoupling_v2.pdf
  - 14
    
    Measurement of top quark charge asymmetries in jet-associated top quark pair production at √s = 13 TeV with CMS
    
    CMS-PAS-TOP-24-015
    
    Speaker: Hugo Alberto Becerril Gonzalez (Deutsches Elektronen-Synchrotron (DE))
    
    lhctop25.pdf
- Thursday
  - 15
    
    Combination of the 𝚫𝝓 spin correlation variable measurements by ATLAS and CMS
    
    Speakers: Andreas Werner Jung (Purdue University (US)), Miriam Watson (University of Birmingham (GB))
    
    DeltaPhi_LHCTopWG_110625.pdf
  - 16
    
    TH: Single top t-channel reference cross sections + rare processes + ttt
    
    Speaker: Gauthier Durieux (CP3 - UCLouvain)
    
    durieux-lhc-top-wg-2025-11-06.pdf
  - 17
    
    Recent differential measurements in t-channel single top production from the ATLAS experiment
    
    Speaker: Lukas Kretschmann (Bergische Universitaet Wuppertal (DE))
    
    LHCTopWG2025_LukasKretschmann.pdf
  - 18
    
    Measurement of the t-channel single top quark cross section in pp collision data at √s = 5.02 TeV with CMS
    
    CMS-PAS-TOP-24-011, https://cds.cern.ch/record/2938634
    
    Speaker: Javier Del Riego Badas (Universidad de Oviedo (ES))
    
    LHCTopWG_tchannel5TeV.pdf
  - 19
    
    Search for the production of a Higgs boson in association with a single top quark in collisions at √s = 13 TeV with the ATLAS detector
    
    ATLAS-HIGP-2024-03, https://arxiv.org/abs/2508.14695
    
    Speaker: Valentina 🐧 Vecchio (University of Manchester)
    
    LHCTopWG_VV25.pdf
Friday 7 November
- Friday
  - 20
    
    Measurement of the top quark pair production cross section in PbPb collisions at √sNN = 5.36 TeV with CMS
    
    CMS-PAS-HIN-24-021, https://cds.cern.ch/record/2942160
    
    Speaker: Andre Govinda Stahl (CERN)
    
    LHC TOP WG 2025.pdf
  - 21
    
    Recent measurements of the top-quark pole mass in dileptonic events at √s = 13 TeV with the ATLAS experiment
    
    ATLAS-TOPQ-2018-23, https://arxiv.org/abs/2507.02632
    ATLAS-TOPQ-2024-12, https://arxiv.org/abs/2509.15066
    
    Speaker: Davide Melini (Univ. of Valencia and CSIC (ES))
    
    Melini_LHCTopWG_7Nov25.pdf
  - 22
    
    SMEFT global fit future prospects: the role of top
    
    Speakers: Victor Miralles (University of Manchester), Victor Miralles (IFIC)
    
    VMiralles_TopWG.pdf
  - 23
    
    Decoherence in ttbar
    
    Speaker: Rafael Aoude
    
    Aoude_TopWG_2025.pdf
- Coffee break
- Friday
  - 24
    
    Summary of the requests for TH predictions from LHCTopWG
    
    Speaker: Emanuele Re (Universita & INFN, Milano-Bicocca (IT))
    
    2025_11_07_LHCtopWG_w_comments.pdf
  - 25
    
    Enhanced reconstruction of dileptonic top quark-antiquark events using supervised machine learning methods
    
    CMS-NOTE-2025-010 , https://cds.cern.ch/record/2944724
    
    Speaker: Ethan Colbert (Purdue University (US))
    
    TopReco_LHCTopWG_Nov-07-25.pdf
  - 26
    
    ATLAS: short talk herwig uncertainties (tbc)
    
    Speakers: Betsy Cunnett (University of Sussex (GB)), Betsy Cunnett
    
    071125_HerwigPS_LHCTOPWG.pdf