18th International Workshop on Top Quark Physics (TOP2025)

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

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

15:00 → 17:00 Public lecture

Public lecture

18:30 → 20:30 Welcome Reception

Monday 22 September

09:25 → 11:00 Introductions + keynote

09:30 Welcome message from the President of Hanyang University

09:40 Welcome message

09:50 Korea CMS activity

10:05 Introductory information

10:15 Keynote presentation

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

11:00 → 11:30 Break

11:30 → 13:00 Objects

11:30 Physics objects in ATLAS

12:00 Physics objects in CMS

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

13:00 → 14:30 Lunch break

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

14:30 ttj production at NNLO in QCD - Heribertus Bayu Hartanto (APCTP, Pohang)

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

15:30 Differential top cross sections at ATLAS and CMS [ATLAS]

16:00 Complete NLO corrections to tt in l + jet channel with full off-shell effects - Leon Mans (RWTH Aachen University)

16:30 → 17:00 Break

17:00 → 19:00 Associated production

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

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

18:00 ttbb at NLO precision in a variable flavor number scheme - Judith Katzy (DESY)

18:30 Single top associated production in ATLAS and CMS [CMS]

20:00 → 22:30 Poster session

Tuesday 23 September

09:30 → 10:30 top+Higgs

09:30 State-of-the-art cross sections for ttH: NNLO predictions matched with NNLL resummation and EW corrections - Anna Kulesza (Munster University)

10:00 Recent results on top associated Higgs production at ATLAS and CMS [CMS]

10:30 → 11:00 Break

11:00 → 12:30 Top quark mass

11:00 How to Unfold Top Decays - Sofia Palacios Schweitzer (Heidelberg University)

11:30 Recent results on top mass from ATLAS and CMS [ATLAS]

12:00 Top-quark mass extraction from energy correlators - Ian Moult (Yale University)

12:30 → 14:00 Lunch

14:00 → 16:00 EFT

14:00 Electroweak corrections in the SMEFT at high energies - Marco Zaro (University of Milan)

14:30 EFT results in the top quark sector in CMS [CMS]

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

15:30 “Global” EFT combinations in ATLAS and CMS [ATLAS]

16:00 → 16:30 Break

16:30 → 18:30 Searches

16:30 Searching for resonances in four top-quark production - Hao-Lin Li (Zhongshan University)

17:00 Searches for new physics in final states involving top quarks in ATLAS and CMS [CMS]

17:30 Probes of flavor symmetry and violation with top quarks in ATLAS and CMS [CMS]

18:00 Collider-Flavour Complementarity from the bottom to the top - Gilberto Tetlalmatzi-Xolocotzi (Siegen University & Paris-Saclay University)

21:00 → 22:30 Q&A

Wednesday 24 September

09:30 → 11:00 Searches: Young Scientist Forum

11:00 → 11:30 Break

11:30 → 12:30 Rare process

11:30 Complete NLO prediction for triple top-quark production - Hesham El Faham (University of Manchester)

12:00 Rare top processes in ATLAS and CMS [ATLAS]

12:30 → 13:30 Lunch

14:00 → 18:00 Excursion

19:00 → 21:00 Conference dinner

Thursday 25 September

09:30 → 13:00 Theory mini-workshop

09:30 Toponium physics - Overview - Kaoru Hagiwara (KEK)

10:00 Third-order correction to top-quark pair production near threshold II. Potential contributions - Yuichiro Kiyo (Tohoku University)

10:30 Updated predictions for toponium production at the LHC - Giovanni Limatola (DESY)

11:00 Break

11:30 Simulating toponium formation signals at the LHC - Benjamin Fuks (Paris, LPTHE)

12:00 Can a pseudoscalar with a mass of 365 GeV in two-Higgs-doublet models explain the CMS ttbar excess? - Jeonghyeon Song (Konkuk University)

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

13:00 → 14:30 Lunch

14:30 → 16:00 Properties

14:30 Precise predictions for the top-quark decay - Long Chen (Shandong University)

15:00 Measurement of spin correlation and entanglement in ATLAS and CMS [ATLAS]

15:30 Measurements other top properties (asymmetries etc) in ATLAS and CMS [CMS]

16:00 → 16:30 Break

16:30 → 18:30 ttbar threshold and and Joker talks

16:30 Latest results on ttbar production threshold [CMS]

17:00 Latest results on ttbar production threshold [ATLAS]

17:30 Joker talk 1

18:00 Joker talk 2

21:00 → 22:30 Q&A

Friday 26 September

09:30 → 10:40 Perspectives

09:30 Quantum observables with top quarks at future lepton colliders - Pawel Horodecki (University of Gdansk)

10:00 The Future Circular Collider: Feasibility Study for a New Research Infrastructure - Matteo Defranchis (CERN)

10:40 → 11:20 Break

11:20 → 13:10 Summary and Last words

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