CERN Accelerating science

Article
Report number arXiv:2008.04246
Title Measurement of the Principal Quantum Number Distribution in a Beam of Antihydrogen Atoms
Author(s) Kolbinger, B. (Stefan Meyer Inst. Subatomare Phys. ; CERN) ; Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Cuendis, S. Arguedas (Stefan Meyer Inst. Subatomare Phys. ; CERN) ; Breuker, H. (RIKEN (main)) ; Capon, A. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (U. Brescia ; INFN, Pavia) ; Dupré, P. (RIKEN (main)) ; Fleck, M. (Tokyo U., Komaba) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Higaki, H. (Hiroshima U. (main)) Visa alla 38 författare
Publication 2021-03-08
Imprint 2020-08-10
Number of pages 14
Note 18 pages, 10 figures
In: Eur. Phys. J. D 75 (2021) 91
DOI 10.1140/epjd/s10053-021-00101-y
Subject category physics.atom-ph ; Other Fields of Physics
Accelerator/Facility, Experiment CERN AD ; ASACUSA AD-3
Abstract The ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration plans to measure the ground-state hyperfine splitting of antihydrogen in a beam at the CERN Antiproton Decelerator with initial relative precision of 10-6 or better, to test the fundamental CPT (combination of charge conjugation, parity transformation and time reversal) symmetry between matter and antimatter. This challenging goal requires a polarised antihydrogen beam with a sufficient number of antihydrogen atoms in the ground state. The first measurement of the quantum state distribution of antihydrogen atoms in a low magnetic field environment of a few mT is described. Furthermore, the data-driven machine learning analysis to identify antihydrogen events is discussed.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2021-2025 The Author(s) (License: CC-BY-4.0)



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 Journalen skapades 2020-08-28, och modifierades senast 2023-12-01


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