18th International Workshop on Top Quark Physics (TOP2025)

21 Sept 2025, 15:00 → 26 Sept 2025, 13:10 Asia/Seoul

Tae Jeong Kim (Hanyang University (KR))

Welcome to the 18th International Workshop on Top Quark Physics (TOP2025)

 

The 18th International Workshop on Top Quark Physics (top2025) will be held at Hanyang University, Seoul, South Korea, from 21st to 26th September 2025.  It brings together experimentalists and theorists to present and discuss the latest developments in top-quark physics.  

 

This year's keynote address will be delivered by Juan Antonio Aguilar Saavedra (Madrid, IFT). The theory and experimental summary talks will be given by Giulia Zanderighi (MPI, Munich) and Wolfgang Wagner (University of Wuppertal), respectively.

 

This year's theory mini workshop, to be held on Thursday morning, will focus on ttbar production at threshold. 

 

Recent editions of the workshop series were

- link to top2024

- link to top2023

- link to top2022

 

 

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Sunday 21 September

18:30 → 20:30 Welcome Reception

JW Marriott Dongdaemun, The Griffin

Monday 22 September

09:30 → 11:00 Introductions + keynote

Convener: Roberto Tenchini (Universita & INFN Pisa (IT))

09:30 Welcome message from the President of Hanyang University

Speaker: Prof. Ki-jeong LEE (Hanyang University)

09:40 Welcome message from the President of Korean Physical Society

Speaker: Prof. Jin Hee Yoon (Inha University (KR))

09:50 Korea CMS TOP activity

Speaker: Su Yong Choi (Korea University (KR))

Korean contribution top - 20250922-v15.pdf

10:05 Introductory information

Speaker: Tae Jeong Kim (Hanyang University (KR))

TOP2025-welcome.pdf

10:15 Keynote presentation

Speaker: Juan Antonio Aguilar Saavedra (Consejo Superior de Investigaciones Científicas (ES))

keynote.pdf

11:00 → 11:30 Break

11:30 → 13:00 Objects

Convener: Abhishek Sharma (University of British Columbia (CA))

11:30 Physics objects in ATLAS

Speaker: Nadezhda Proklova (University of Pennsylvania (US))

Proklova_TOP2025.pdf

12:00 Physics objects in CMS

Speaker: Markus Seidel (Riga Technical University (LV))

cms_physics_objects_mseidel.pdf

12:30 Advanced statistical methods (including unfolding) in ATLAS and CMS

Speaker: Tomas Dado (CERN)

Advanced statistical tools - TOP 2025.pdf

13:00 → 14:30 Lunch break

14:30 → 16:30 Cross-section Associate production

Convener: Cecilia Gerber (University of Illinois Chicago (US))

14:30 ttj production at NNLO in QCD

Speaker: Heribertus Bayu Hartanto (Asia Pacific Center for Theoretical Physics (APCTP), Pohang, South Korea)

Bayu_Top_2025.pdf

15:00 Inclusive top pair and single top cross sections in ATLAS and CMS

Speaker: Sebastian Wuchterl (CERN)

SW_tt_t.pdf

15:30 Differential top cross sections at ATLAS and CMS

Speaker: Johannes Hessler (Max Planck Society (DE))

TOP25_diff_xsec_Hessler.pdf

16:00 Complete NLO corrections to tt in l + jet channel with full off-shell effects

Speaker: Leon Mans (RWTH Aachen University)

TOP2025_Leon_Mans.pdf

16:30 → 17:00 Break

17:00 → 19:00 Associated production

Convener: Didar Dobur (Ghent University (BE))

17:00 Top quark pair production + vector boson in CMS

Speaker: Sergio Sanchez Cruz (CERN)

top2025_bosons.pdf

17:30 Top quark pair production + vector boson in ATLAS

Speaker: Stergios Kazakos (Michigan State University (US))

ttV_ATLAS_2025_09_22_TOP2025_StergiosKazakos.pdf

18:00 ttbb at NLO precision in a variable flavor number scheme

Speaker: Judith Katzy (Deutsches Elektronen-Synchrotron (DE))

SherpaFusingTopWorkshopSeoul2025.pdf

18:30 Single top associated production in ATLAS and CMS

Speaker: Javier Del Riego Badas (Universidad de Oviedo (ES))

TOP2025_Javier_del_Riego.pdf

19:30 → 21:30 Poster session

19:30 Simulation of on and off-shell top quark productions with bb4l generator

Speaker: Jiwon Park (Deutsches Elektronen-Synchrotron (DE))

poster-top2025_bb4l_jiwon_park_v1.pdf

19:35 Charged Lepton Flavour Violation in the top quark sector at CMS

Speaker: Yeonsu Ryou (Hanyang University (KR))

2025top.pdf

19:40 Top Reconstruction methods

Speaker: Ivo Young (University of Glasgow (GB))

Top_2025_IY.pdf

19:45 Measurement of differential t-channel single top (anti)quark production cross-sections at 13 TeV with the ATLAS detector

Speaker: Lukas Kretschmann (Bergische Universitaet Wuppertal (DE))

Top25_LukasKretschmann.pdf

19:50 Measurement of the quadruple-differential angular decay rates of single top quarks produced with the ATLAS detector

Speaker: Raees Ahmad Khan (University of Pittsburgh (US))

TOP2025.pdf

19:55 Single top plus Higgs production at the LHC

Speaker: Ya-Juan Zheng

0922Top2025.pdf

20:00 Two-loop Integrals for leading colour ttW production

Speaker: Dhimiter Canko (Università di Bologna)

ttW_Poster.pdf

20:05 Two-loop QCD corrections for radiative top decay process

Speaker: Colomba Brancaccio (University of Turin)

CB_poster_TOP25.pdf

20:10 One-loop Amplitudes fo ttbar+jet and ttbar+gamma Productions at the LHC

Speaker: Mr Souvik Bera

Top2025_poster_SB.pdf

20:15 The interference effect of ttbar and new physics near ttbar threashold at LHC

Speaker: JINHEUNG KIM

20:20 Reconstructing Toponium using Recursive Jigsaw Reconstruction

Speaker: Aman Desai (Adelaide University (AU))

Top2025_Aman.pdf

20:25 Top quark physics at FCC-hh

Speaker: Louise Beriet

Tuesday 23 September

09:30 → 11:00 Properties

Convener: Prof. Hyunsoo Kim (Sejong University (KR))

09:30 Precise predictions for the top-quark decay

Speaker: Dr Long Chen (Shandong University)

10:00 Measurement of spin correlation and entanglement in ATLAS and CMS

Speaker: Fiona Ann Jolly (Deutsches Elektronen-Synchrotron (DE))

10:30 Measurements other top properties (asymmetries etc) in ATLAS and CMS

Speaker: Nils Faltermann (KIT - Karlsruhe Institute of Technology (DE))

11:00 → 11:30 Break

11:30 → 13:00 Top quark mass

Convener: Martijn Mulders (CERN)

11:30 How to Unfold Top Decays

Speaker: Sofia Palacios Schweitzer (ITP, University Heidelberg)

12:00 Recent results on top mass from ATLAS and CMS

Speaker: Mr Changqiao Li (Max Planck Society (DE))

TOP2025_Changqiao.pdf

12:30 Top-quark mass extraction from energy correlators

Speaker: Ian Moult

13:00 → 14:30 Lunch

14:30 → 16:30 EFT

Convener: Nedaa Alexandra Asbah (CERN)

14:30 Electroweak corrections in the SMEFT at high energies

Speaker: Marco Zaro (Università degli Studi e INFN Milano (IT))

15:00 EFT results in the top quark sector in ATLAS

Speaker: Mr Marcos Miralles Lopez (University of Glasgow)

15:30 EFT results in the top quark sector in CMS

Speaker: Andrea Piccinelli (University of Notre Dame (US))

TOPEFT_CMS_TOP2025.pdf

16:00 “Global” EFT combinations in ATLAS and CMS

Speaker: Maheyer Jamshed Shroff (University of Victoria (CA))

16:30 → 17:00 Break

17:00 → 19:00 Searches

Convener: Stephanie Beauceron (LPNHE, Paris (France))

17:00 Searching for resonances in four top-quark production

Speaker: Hao-lin Li (Zhongshan University)

17:30 Searches for new physics in final states involving top quarks in ATLAS and CMS

Speaker: Jiwon Park (Deutsches Elektronen-Synchrotron (DE))

18:00 Collider-Flavour Complementarity from the bottom to the top

Speaker: Gilberto Tetlalmatzi-Xolocotzi (Siegen University)

18:30 Probes of flavor symmetry and violation with top quarks in ATLAS and CMS

Speaker: Normunds Ralfs Strautnieks (University of Latvia (LV))

21:00 → 22:30 Q&A

Big Home

Wednesday 24 September

09:30 → 11:30 Young Scientist Forum

Convener: Knut Zoch (Harvard University (US))

09:30 Search for H->cc and measurement of H->bb via ttH production in CMS

Speaker: Maarten De Coen (Ghent University (BE))

09:45 Modelling uncertainties of the ATLAS $bb4\ell$ Monte Carlo sample

Speaker: Katharina Voss (Universitaet Siegen (DE))

10:00 Towards a NNLO+PS generator for ttH production in POWHEG

Speaker: Christian Biello (Max-Planck Institute for Physics)

10:15 Top quark-antiquark pair production reconstruction in dileptonic channel using supervised ML methods in Run II at 13 TeV in CMS

Speaker: Gino Daniels (Purdue University (US))

10:30 ATLAS YSF 2

Speaker: Huacheng Cai (CERN)

10:45 Rare and exclusive few-body decays of the top quark

Speaker: Van Dung Le (Vietnam National University (VN))

top2025_VanDung.pdf

11:00 EFT measurement in ttbar process

Speaker: Min Tang (ZJU - Zhejiang University (CN))

11:15 ATLAS YSF 3

Speaker: Maren Stratmann (Bergische Universitaet Wuppertal (DE))

11:30 → 12:00 Break

12:00 → 13:00 Rare process

Convener: Kai-Feng Chen (National Taiwan University (TW))

12:00 Complete NLO prediction for triple top-quark production

Speaker: Hesham El Faham (The University of Manchester)

12:30 Rare top processes in ATLAS and CMS

Speaker: Diptaparna Biswas (Universitaet Siegen (DE))

ATL-COM-PHYS-2025-765.pdf

13:00 → 13:40 Lunch

14:30 → 18:30 Excursion

Gyeongbokgung Palace

19:00 → 21:00 Conference dinner

JW Marriott Dongdaemun, Tavolo 24

Thursday 25 September

09:30 → 13:00 Theory mini-workshop

Convener: Prof. Michal Wiktor Czakon

09:30 Toponium physics - Overview

Speaker: Kaoru Hagiwara (KEK)

10:00 Third-order correction to top-quark pair production near threshold II. Potential contributions

Speaker: Yuichiro Kiyo (Tohoku University)

10:30 Updated predictions for toponium production at the LHC

Speaker: Giovanni Limatola

11:00 Break

11:30 Simulating toponium formation signals at the LHC

Speaker: Benjamin Fuks

12:00 Can a pseudoscalar with a mass of 365 GeV in two-Higgs-doublet models explain the CMS ttbar excess?

Speaker: Prof. Jeonghyeon Song (Konkuk University)

12:30 Impact of Interference Effects on Higgs-boson Searches in the Di-top Final State at the LHC

Speaker: Romal Kumar

13:00 → 14:30 Lunch

14:30 → 15:30 Top quark pair production at the ttbar threshold

Convener: Alexander Grohsjean (Hamburg University (DE))

14:30 Latest results on ttbar production threshold in CMS

Speaker: Reza Goldouzian (University of Notre Dame (US))

15:00 Latest results on ttbar production threshold in ATLAS

Speaker: Oliver Majersky (Deutsches Elektronen-Synchrotron (DE))

15:30 → 16:30 Top+Higgs

Convener: Alexander Grohsjean (Hamburg University (DE))

15:30 State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections

Speaker: Anna Kulesza (University of Muenster)

16:00 Recent results on top associated Higgs production at ATLAS and CMS

Speaker: Jan van der Linden (Ghent University (BE))

16:30 → 17:00 Break

17:00 → 19:00 Joker talks

Convener: Seong Youl Choi (Chonbuk National University (KR))

17:00 Joker talk 1

17:30 Joker talk 2

18:00 Joker talk 3

18:30 Joker talk 4

21:00 → 22:30 Q&A

Big Home

22:30 → 23:30 Last night discussion

Big Home

Friday 26 September

09:30 → 10:40 Perspectives

Convener: Un Ki Yang (Seoul National University (KR))

09:30 Quantum information processing and correlations: general perspective with a ttbar example

Speaker: Pawel Horodecki (Gdansk University of Technology)

10:00 The Future Circular Collider: Feasibility Study for a New Research Infrastructure

Speaker: Matteo Defranchis (CERN)

10:40 → 11:20 Break

11:20 → 13:10 Summary and Last words

Convener: Antonio Onofre (Universidade do Minho/CFUMUP,LIP)

11:20 Theory summary

Speaker: Giulia Zanderighi (Max Planck Society (DE))

12:05 Experimental Summary

Speaker: Wolfgang Wagner (Bergische Universitaet Wuppertal (DE))

12:50 Top2026 announcement

13:00 Closing remarks, proceedings instructions