C${}^3$ Demonstration Research and Development Plan

Emilio A. Nanni, Martin Breidenbach, Caterina Vernieri +46

C${}^3$ is an opportunity to realize an e${}^{+}$e${}^{-}$ collider for the study of the Higgs boson at $\sqrt{s}=250$ GeV, with a well defined upgrade path to 550 GeV while staying on the…