The FCC integrated programme: a physics manifesto

The FCC integrated programme comprises an e+e− high-luminosity circular collider that willproduce very large samples of data in an energy range 88 ≤ √s ≤ 365 GeV, followed by a high-energypp machine that, with the current baseline plan, will operate at a collision energy of around 85 TeVand deliver datasets an order of magnitude larger than those of the HL-LHC. This visionary projectwill allow for transformative measurements across a very broad range of topics, which in almost allcases will exceed in sensitivity the projections of any other proposed facility, and simultaneously providethe best possible opportunity for discovering physics beyond the Standard Model. The highlights ofthe physics programme are presented, together with discussion on the key attributes of the integratedproject that enable the physics reach. It is noted that the baseline programme of FCC-ee, in particular, isboth flexible and extendable, and also that the synergy and complementarity of the electron and protonmachines, and the sharing of a common infrastructure, provides a remarkably efficient, timely and cost-effective approach to addressing the most pressing open questions in elementary particle physics Contribution to the European Strategy for Particle Physics Update (2025-2026)