The Belle II experiment at the SuperKEKB accelerator, a super flavour factory project in KEK in Japan, has started its operation in April this year. In the seminar we will review the motivation for precision studies in flavour physics as a promising new window for New Physics, describe the accelerator and the detector, and discuss the present status, immediate plans and prospects of the project.
Keywords/Mots clés: B-Physics/Physique du B, KEK, CP Violation in B mesons/Violation de CP dans les mésons beaux, Low energy & high luminosity e+e- collider/Collisionneur e+e- de basse énergie & de haute luminosité