FCC: QCD physics

The Future Circular Collider (FCC) will deliver unprecedented precision in the measurement of the
properties and parameters of the Standard Model (SM), directly and indirectly probing new physics up
to the 100-TeV scale. Its broad and diverse programme, including very high-luminosity e+e− collisions
(FCC-ee) and hadronic collisions at the energy frontier (FCC-hh), will offer exceptional opportunities to
advance knowledge of the strong interaction through high-precision measurements across a wide range
of energy scales and scattering processes. Key measurements at the FCC-ee and FCC-hh are reviewed
that will provide a deeper understanding of quantum chromodynamics (QCD) in the perturbative, non-
perturbative and high-density regimes, and advance its theoretical description to a level of precision far
beyond that of current collider experiments. The critical role played by QCD in determining key Stan-
dard Model quantities at FCC-ee is also discussed, highlighting how improved theoretical calculations
and simulations are needed to match the foreseen FCC-ee experimental uncertainties.

Contribution to the European Strategy for Particle Physics Update 2025-2026