Muonium Spectroscopy as a Quantum Sensor for Ultralight Axion Dark Matter

2025/09/25 by Fang Feng, Fang, Feng, Kim Siang Khaw +12
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle Detector Development and Performance

paper · pdf · doi:10.48550/arxiv.2509.20862

openalex publication_date 2025/09/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

High-intensity muon beams could enable a muonium-based search for ultralight axions through resonant quantum transitions between hyperfine states. Combining theoretical calculations with simulation results, we demonstrate that such a muonium-based experimental approach -exemplified by one of the facilities under development in Huizhou- could improve constraints on the axion-muon coupling by up to two orders of magnitude compared with existing limits from the muon g-2 measurement, over the axion mass range of 10^-15 eV to 10^-12 eV. These results establish muonium spectroscopy as a powerful probe of physics beyond the Standard Model.

Citations

• New Limits on Exotic Muon Interactions Mediated by Axion-Like Particles
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• Simulation studies of a high-repetition-rate electron-driven surface muon beamline at SHINE
• The Feasibility Study of the GeV-Energy Muon Source Based on HIAF
• Muonium fine structure: theory update, tests of Lorentz violation and experimental prospects
• Science Case for the new High-Intensity Muon Beams HIMB at PSI

Related

• Detecting Axion Dark Matter with an Organic Molecular Maser
• New Limits on Exotic Muon Interactions Mediated by Axion-Like Particles
• Synthesis of a high intensity, superthermal muonium beam for gravity and laser spectroscopy experiments
• Probing axion and flavored new physics with the NA64μ experiment
• High resolution spectroscopy of muonium