Neutrino, BSM and QCD Physics Opportunities with Forward Experiments at the Future Circular Collider

Proton-proton collisions at the FCC (√s ≈ 100 TeV) will generate an intense flux of high-energy neutrinos in the forward direction. Far-forward experiments integrated into the FCC could detect 10⁹ electron/muon neutrinos and 10⁷ tau neutrinos, far exceeding (HL-)LHC yields. These measurements would offer new insights into QCD, nuclear dynamics, and neutrino charge radii. Additionally, the FCC could probe BSM physics, such as long-lived particles with masses up to 50 GeV and quirks up to 10 TeV. Integrating forward experiments into the FCC builds on the FPF@HL-LHC and opens new opportunities for discovery. In this talk I will discuss the theory motivations of forward collider physics and the unique opportunites that can be gained by studying the forward direction at both the LHC and the FCC