Muon Colliders

TL;DR

Muon colliders offer high-energy particle collisions with potential for significant scientific breakthroughs, but face technical challenges related to muon production, lifetime, and luminosity that require innovative solutions and technological advancements.

Contribution

This paper summarizes recent progress, new ideas, and future recommendations for developing muon collider technology to overcome current challenges.

Findings

Progress in muon collider concepts and technologies

Identification of key challenges and potential solutions

Recommendations for future research and development

Abstract

Muon colliders have a great potential for high-energy physics. They can offer collisions of point-like particles at very high energies, since muons can be accelerated in a ring without limitation from synchrotron radiation. However, the need for high luminosity faces technical challenges which arise from the short muon lifetime at rest and the difficulty of producing large numbers of muons in bunches with small emittance. Addressing these challenges requires the development of innovative concepts and demanding technologies. The document summarizes the work done, the progress achieved and new recent ideas on muon colliders. A set of further studies and actions is also identified to advance in the field. Finally, a set of recommendations is listed in order to make the muon technology mature enough to be favourably considered as a candidate for high-energy facilities in the future.