New Frontiers in Collider Physics: CepC and SppC

Scientists have been exploring the high energy frontier with the CERN Large Hadron Collider for some year now. The new boson, discovered in 2012 by the ATLAS and CMS collaborations, has so far been shown to behave very much like the long-sought-after Higgs Boson, and hence it completes the discovery of the Standard Model of Particle Physics. Remarkably, no other deviations from the Standard Model have been found, neither in precision measurements nor in direct searches for new particles. The second run of the LHC is in full swing and the High-Luminosity LHC is expected to run until 2037.

Collider physics will then move either into precise measurements of the Higgs boson, at linear or circular collider, or into further exploration of the energy frontier with circular proton-proton machines. In this talk, I will review some of these projects with a focus on the current plans for the Circular Electron Positron Collider (CEPC) and a subsequent Super Proton-Proton Collider (SPPC) to be built in China. The CEPC will make precise measurement of the Z, W and Higgs bosons, while the SPPC, colliding protons up to 130 TeV, would explore new physics scenarios at the highest energies.