A new step for the French KM3NeT project

The CPPM's KM3NeT team has completed the construction of the second junction box, one of the main components for the KM3NeT project. It will be deployed coming soon, at a depth of 2500 meters, 40 kilometers off the coast of Toulon.

More information on the CPPM website

More information on the KM3NeT website

Junction box
Junction box

Dernière modification: Apr 24, 2026, 3:57:23 PM

Tsinghua and AMU Test of Lepton Flavor Universality (TAUFU)

The project led by Olivier Leroy was selected on March 18, 2019 by the Steering Committee of the AMidex Foundation as part of the "International 2018" call for projects of AMidex. This call aims to structure and strengthen the international cooperation of Aix-Marseille University (AMU) and the A*Midex partners through the support to international research, development and innovation projects with strong strategic potential. The project entitled "Tsinghua and AMU Test of Lepton Flavor Universality" (TAUFU) is led by the LHCb team at the Marseille Centre de Physique des Particules (CPPM, AMU - CNRS). The LHCb experiment is installed at the Large Hadron Collider LHC at CERN in Geneva. The aim of the experiment is to highlight New Physics by performing precision measurements in the decay of beautiful and charmed hadrons.

Contact [Olivier Leroy],(leroy@cppm.in2p3.fr)

Plus d'informations : https://www.univ-amu.fr/en/public/actualites/amidex-international-project-launch-taufu-collaborative-project-coordinated

Dernière modification: Apr 24, 2026, 3:57:23 PM

Best Wishes for 2020

Greeting card illustrations: - The photon team is involved in the very large CTA research infrastructure. This observatory will detect very high energy gamma rays from extreme astrophysical sources with a sensitivity about ten times greater than that of its predecessors. @Dirk Hoffmann, CPPM - With its expertise in data flow processing, the LHCb team has designed a new generation of electronics card. 700 cards have been manufactured for the LHCb experiment, allowing all data to be read in real time at 40 Terabits/s. ©Jean-Pierre Cachemiche, CPPM Dernière modification: Apr 24, 2026, 3:57:23 PM

LHCb sees a new flavour of matter–antimatter asymmetry

The LHCb collaboration at CERN has seen, for the first time, the matter–antimatter asymmetry known as CP violation in a particle dubbed the D0 meson. The finding, presented today at the annual Rencontres de Moriond conference and in a dedicated CERN seminar, is sure to make it into the textbooks of particle physics.

A CP-symmetry transformation swaps a particle with the mirror image of its antiparticle. The LHCb collaboration has observed a breakdown of this symmetry in the decays of the D0 meson (illustrated by the big sphere on the right) and its antimatter counterpart, the anti-D0 (big sphere on the left), into other particles (smaller spheres). The extent of the breakdown was deduced from the difference in the number of decays in each case (vertical bars, for illustration only - Image: CERN
A CP-symmetry transformation swaps a particle with the mirror image of its antiparticle. The LHCb collaboration has observed a breakdown of this symmetry in the decays of the D0 meson (illustrated by the big sphere on the right) and its antimatter counterpart, the anti-D0 (big sphere on the left), into other particles (smaller spheres). The extent of the breakdown was deduced from the difference in the number of decays in each case (vertical bars, for illustration only - Image: CERN

More informations

Dernière modification: Apr 24, 2026, 3:57:23 PM

International collaboration publishes concept design for a post-LHC future circular collider at CERN

the Future Circular Collider (FCC) collaboration submitted its Conceptual Design Report (CDR) for publication, a four-volume document that presents the different options for a large circular collider of the future. It showcases the great physics opportunities offered by machines of unprecedented energy and intensity and describes the technical challenges, cost and schedule for realisation.

Image: A collection of photos related to the FCC study, reflecting the different aspects of the project and the ongoing R&D activities to advance new technologies that can guarantee a reliable and sustainable operation - Credit: CERN
Image: A collection of photos related to the FCC study, reflecting the different aspects of the project and the ongoing R&D activities to advance new technologies that can guarantee a reliable and sustainable operation - Credit: CERN

CERN Press Release

Dernière modification: Apr 24, 2026, 3:57:23 PM