Abstract Conceptual design and performance evaluation of HL-LHC based antimuon-proton collider μLHC are presented. Leveraging the μTRISTAN concept based on established J-PARC ultra-cold μ+ beam technology, μLHC will give the opportunity to achieve a 5.3 TeV center-of-mass energy, significantly surpassing EIC and LHeC. Two booster ring options for μ+ acceleration, namely, a μTRISTAN-based and a repurposed LHeC ERL-based systems, are explored. Achievable luminosities are predicted to exceed 1033cm−2s−1. The μLHC offers substantially wider kinematic plane coverage, particularly in small-x and high-Q2 regions, significantly contributing to QCD basics and Higgs boson properties. Its unique potential for BSM physics extends to muon-related phenomena like excited muons, color-octet muons, leptoquarks, and contact interactions. A possible detector concept is also outlined. Given the maturity of ultra-cold μ+ beam technology, μLHC is highly feasible for earlier realization than the muon collider, positioning it as a critical tool for the future of high energy physics.
Akturk et al. (Sun,) studied this question.