Summary Report of Physics Beyond Colliders at CERN

TL;DR

Physics Beyond Colliders explores innovative CERN projects beyond traditional colliders to address fundamental physics questions using diverse beams and experiments, aiming to maximize scientific output over the next two decades.

Contribution

It presents a comprehensive overview of new experimental proposals and technological developments for CERN's future physics program beyond existing collider projects.

Findings

Identification of key physics questions for future experiments

Development of new beam and detector technologies

Integration of proposals within the global physics landscape

Abstract

Physics Beyond Colliders is an exploratory study aimed at exploiting the full scientific potential of CERN's accelerator complex and its scientific infrastructure in the next two decades through projects complementary to the LHC, HL-LHC and other possible future colliders. These projects should target fundamental physics questions that are similar in spirit to those addressed by high-energy colliders, but that require different types of beams and experiments. A kick-off workshop held in September 2016 identified a number of areas of interest and working groups have been set-up to study and develop these directions. All projects currently under consideration are presented including physics motivation, a brief outline of the experimental set-up and the status of the corresponding beam and detector technological studies. The proposals are also put in context of the worldwide landscape and their implementation issues are discussed.