Top LHC France 2025 - LPNHE Paris

29 avr. 2025, 13:30 → 30 avr. 2025, 17:30 Europe/Paris

Amphi Charpak (LPNHE)

The Top LHC France workshop series aims to foster, at a national level, all research activities connected to the physics of the top quark. These meetings hence allow for theoretical and experimental high energy physicists working in France to informally discuss the recent LHC results. A particular emphasis is put on results that originate from the work performed in the French laboratories and new collaborations are also encouraged.

The first editions of the Top LHC France workshops were mostly oriented towards precision measurements in the top sector. With the LHC increase in energy and luminosity, the discussion started to focus, for the last couple of years, on processes and measurements where new physics could be hiding. The same considerations are driving the agenda of the 2025 workshop. 

Although most participants are working in French laboratories, the workshop is open to international participants who have strong links with France.

2025 edition will be held on the Pierre et Marie Curie campus of the Sorbonne University in Paris.

mar. 29 avril

14:00 → 14:15 Introduction

Président de session: Frédéric DERUE (LPNHE-Paris CNRS/IN2P3)

14:15 → 15:45 Session mardi 1

14:15 ttHH (bbyy)

Orateur: Arthur Lafarge (Université Clermont Auvergne (FR), LPCA (Clermont-Ferrand))

14:45 ttH (multilepton)

Orateur: Tanguy Marsault

15:15 Prompt Lepton Isolation Tagger (PLIT)

Orateur: Ema Maricic

15:45 → 16:15 Coffee/Tea break

16:15 → 17:45 Toponium

16:15 Toponium : theoretical aspects

Orateur: Prof. Benjamin Fuks (LPTHE Paris / Sorbonne Université)

16:45 Toponium : CMS results

Orateur: Alexander Grohsjean (University of Hamburg)

17:15 Toponium : ATLAS results

Orateur: Nedaa-Alexandra Asbah (Harvard)

18:00 → 19:30 Social event

mer. 30 avril

09:00 → 10:30 Session mecredi 1

09:00 Four tops

09:30 Learning Off-Shell Effects in Top-Pair Production with Direct Diffusion Neural Networks

Orateurs: Anja Butter (LPNHE), Tomas Jezo (University of Muenster, Germany)

10:00 EFT Review

Orateur: Adrien Auriol (Laboratoire de Physique de Clermont Auvergne (LPCA))

10:30 → 11:00 Coffee/Tea break

(simple) coffee/tea will be served before the afternoon session

11:00 → 12:30 Session mercredi 2

11:00 Single top t-channel test of CP

Orateur: Enzo Fillaudeau (IP2I, Lyon)

11:30 ttbar+ll LFU

Orateur: David Amram (IP2I)

12:00 VLQ same sign

Orateur: Arnab PUROHIT (IP2I)

14:00 → 15:30 Future

14:00 Top quark pair production in photon-photon collisions at the LHC

Orateur: Huasheng SHAO ({CNRS}UMR7589)

14:30 Sustainability

Orateur: Samuel Calvet (LPCA / IN2P3 / CNRS)

15:00 Contribution Top LHC France to ESPPU

Orateur: jeremy andrea (IPHC)