Production and study of antideuterium with the GBAR beamline
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2025-03
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Journal Article
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Abstract
The potential of circulating antideuterons ((d) over bar) in the AD/ELENA facility at CERN is under active investigation. Approximately 100 (d) over bar per bunch could be delivered as a 100 keV beam based on measured cross-sections. These (d) over bar could be further decelerated to 12 keV using the GBAR scheme, enabling the synthesis of antideuterium ((D) over bar) via charge exchange with positronium, a technique successfully demonstrated with 6 keV antiprotons for antihydrogen production. The AD/ELENA facility is currently studying the possibility of increasing the (d) over bar rate using an optimized new target geometry. Assuming this is feasible, we propose further enhancing the anti-atom production by using laser-excited positronium in the 2P state within a cavity, which is expected to increase the (D) over bar (2S) production cross-section by almost an order of magnitude for (d) over bar with 2 keV energy. We present the projected precision for measuring the antideuterium Lamb shift and extracting the antideuteron charge radius, as a function of the beam flux.
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published
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79 (3)
Pages / Article No.
17
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Springer
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197346 - Study of Exotic Matter (SNF)
201465 - Gravitational Behaviour of Anti-hydrogen at Rest (GBAR) (SNF)
201465 - Gravitational Behaviour of Anti-hydrogen at Rest (GBAR) (SNF)