A Linear Collider Vision for CERN

by Jenny List (DESY)

Tuesday 8 Apr 2025, 16:00 → 17:30 Europe/Berlin

Auditorium (DESY)

I will outline a proposal for a Linear Collider Facility as the next flagship project for CERN. This proposal offers the opportunity for a timely, cost-effective and staged construction of a new collider that will be able to comprehensively map the Higgs (H) boson's properties, including the Higgs field potential, thanks to a large span in centre-of-mass energies and polarised beams. A comprehensive program to study the H boson and its closest relatives with high precision requires data at centre-of-mass energies from the Z pole to at least 1 TeV. It should include precision measurements of the H boson in both major production mechanisms, e⁺e⁻→ZH (Higgs-strahlung) and e⁺e⁻→ννH (WW fusion), gauge boson interactions and the masses of the W, H and top quark, measurements of the top-quark Yukawa coupling through e⁺e⁻→ttH, the H boson self-coupling through HH production, and the electroweak couplings of the top quark. In addition, e⁺e⁻ collisions offer discovery potential for new particles complementary to HL-LHC. The proposed facility robustly satisfies these scientific goals. With a total length of 33.5 km, two interaction regions as well as additional R&D and fixed-target experiments, it offers significant flexibility to take into account scientific and strategic developments.

We invite you to attend the presentation in person at the DESY Auditorium. We will also offer a webcast to this colloquium.

https://desy.zoom.us/j/99616528733

Meeting ID: 996 1652 8733 
Meeting Password: 733220

PAPC-poster_List_08April25.pdf