Future Circular Colliders

Depending what future runs of the LHC may reveal, the most interesting possibility for a subsequent high-energy accelerator may be a larger circular tunnel housing an electron-positron collider and/or a proton-proton collider. CERN is coordinating studies of an electron-positron option that would yield much higher luminosities than a linear collider for Higgs, Z and W studies, and a proton-proton option capable of reaching 100 TeV in the centre of mass.Together they could explore directly and indirectly new physics at energies of 10 TeV or more. Examples of possible physics topics include precision Higgs and electroweak studies and searches for massive dark matter particles.