In-beam hyperfine spectroscopy of antihydrogen, hydrogen and deuterium

2022/12/26 by E. Widmann, Widmann, E.
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · pdf · doi:10.48550/arxiv.2212.13083

openalex publication_date 2022/12/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03

Abstract

The ASACUSA collaboration is developing a polarized beam of antihydrogen atoms to precisely determine the ground-state hyperfine structure for studies of CPT and Lorentz invariance. Using a beam of ordinary hydrogen, measurements of both the σ and π-transition have been performed, investigating orientation-dependent SME coefficients. Furthermore a first hyperfine experiment with a beam of deuterium is being prepared.

Related

• Prospects of In-Flight Hyperfine Spectroscopy of (Anti)Hydrogen for Tests of CPT Symmetry
• Rabi Experiments on the σ and π Hyperfine Transitions in Hydrogen and Status of ASACUSA's Antihydrogen Program
• Measurement of the Principal Quantum Number Distribution in a Beam of Antihydrogen Atoms
• Observation of the hyperfine spectrum of antihydrogen
• Progress Towards Ramsey Hyperfine Spectroscopy in ASACUSA