The 2025 edition of the European Physical Society Conference on High Energy Physics (EPS-HEP), a leading conference in high energy physics, was held this year in Marseille, France, from July 7 to 11. This prestigious event welcomed 800 participants, offering a unique opportunity to exchange views with key players in the field on current advances and future prospects. Alongside this scientific event, physicists offered a program of outreach activities for the general public, entitled Infinity Festival Physics & Outreach. This conference was jointly organized by the High Energy and Particle Physics (HEPP) Division of EPS and six CNRS laboratories (CPPM, CCIN2P3, CPT, L2IT, LAM, LUPM) and was coordinated by CPPM.
From July 7 to 11, 2025, the European Physical Society Conference on High Energy Physics (EPS-HEP 2025) brought together 800 physicists from around the world at the Palais du Pharo in Marseille. Organized by six French CNRS laboratories, this flagship conference of the EPS High Energy and Particle Physics Division once again confirmed its central role for the international particle physics community.
Over five days, participants presented and discussed the latest theoretical developments and experimental results in all areas of particle physics, from LHC physics to neutrinos, astroparticles, and quantum field theory. Reflecting the rapid evolution of the field, the 2025 edition introduced two new thematic sessions devoted to artificial intelligence for high-energy physics and quantum technologies, highlighting the growing impact of these topics on research methods and future experiments. More than 650 oral presentations and poster contributions were submitted, highlighting the results of major international collaborations as well as new ideas from across the community.
The conference was held at a pivotal moment, as the community prepares for the 2026 update of the European Strategy for Particle Physics. Several sessions were devoted to future facilities and long-term visions for the field, including beyond the LHC. The discussions in Marseille reflected the richness and diversity of the contributions submitted earlier this year as part of the strategic process.
The week concluded with a summary presentation by Andreas Hoecker (CERN), highlighting the key results and trends presented during the conference. His closing words — “The future will be sharp” — perfectly captured the enthusiasm and ambitions of the community as it looks ahead to the next major steps in understanding our Universe.
For the physicists organizing this conference, it was also a unique opportunity to share the excitement of cutting-edge research with the general public. The Infinity Festival Physics & Outreach, a program of scientific and technical cultural activities, was designed to spark curiosity, stimulate the imagination, and connect the public to the incredible world of physics. Whether through captivating lectures, interactive workshops, or artistic performances, there was something for everyone. It was an opportunity to marvel at the beauty of science in action!
Testimonial of Andreas Hoecker, CERN, in CERN Courier magazine (sep.-oct. 2025)
"Centre stage at the Palais du Pharo: The European Physical Society Conference on High Energy Physics in Marseille showcased the remarkable creativity and innovation in both experiment and theory, driving progress across all scales of fundamental physics in this pivotal year for the HEP community.
Cristinel Diaconu and Thomas Strebler, chairs of the local organising committee, together with all committee members and many volunteers, succeeded in delivering a flawlessly organised and engaging conference in the beautiful setting of the Palais du Pharo overlooking Marseille’s old port.
They closed the event with a memorial phrase of British cyclist Tom Simpson: «There is no mountain too high.»"
More information:
CERN Courier magazine, pages 17-18
Scientific program and contributions
Division of High Energy Physics and Particles of the EPS
Infinity Festival Physics & Outreach
Interviews with conference participants (12 videos)
Photos taken during the EPS-HEP scientific conference and the Infinity Festival Physics & Outreach