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Nicolas Copernicus proposed a heliocentric model in 1543, placing the Sun at the center of the universe, in contrast to Ptolemy’s geocentric model. This revolution is often oversimplified, obscuring the nuances of his proposal. A seminar by Richard Taillet explores this model in detail, including its challenges and the reactions it provoked.

This bilingual seminar aims to demystify Feynman diagrams for all LAPP/LAPTh staff. Firstwe will explore these essential tools of particle physics in an accessible way, using everyday analogies. The second part will be aimed at physicists focusing on the art of effectively communicating these concepts to a non-specialist audience.

The Standard Model (SM) has gaps, like the matter-antimatter imbalance, hinting at physics beyond the SM (BSM). Double-charm B meson decays are key to exploring this.
Recent LHCb findings, such as the unexpected evidence of Bc→Ds+D0bar decay or the first measurements of CPV and branching fractions of lighter B mesons decays, suggest possible BSM physics.

The future circular collider is the next big challenge in high-energy physics, aiming to explore the standard model with unprecedented precision and to search for new particles. The presentation will provide an overview of the current status of the project, focusing on the physic case of the initial phase with electron and positron collisions.