Physics Case for the ILC Project: Perspective from Beyond the Standard Model

Understand

The International Linear Collider (ILC) has recently proven its technical maturity with the publication of a Technical Design Report, and there is a strong interest in Japan to host such a machine.

• We summarize key aspects of the Beyond the Standard Model physics case for the ILC in this contribution to the US High Energy Physics strategy process.
• On top of the strong guaranteed physics case in the detailed exploration of the recently discovered Higgs boson, the top quark and electroweak precision measurements, the ILC will offer unique opportunities which are complementary to the LHC program of the next decade.
• Many of these opportunities have connections to the Cosmic and Intensity Frontiers, which we comment on in detail.