Kaonic Atoms are a powerful tool to experimentally probe fundamental interactions, in particular Quantum Chromodynamics (QCD) and Quantum Electrodynamics (QED). The SIDDHARTA-2 experiment performs high-precision X-ray spectroscopy of kaonic atoms, and its main goal is to measure, for the first time, the X-ray transition to the fundamental level (2p → 1s) of Kaonic Deuterium. Alongside this measurement, SIDDHARTA-2 has also measured other kaonic atoms, such as Kaonic Helium-4 and Kaonic Neon. In this paper, various results of the experiment are reported, along with the proposed target precision for the kaonic deuterium measurement and the future plans of the collaboration.
Artibani, F., Clozza, F., Scordo, A., Abbene, L., Bazzi, M., Borghi, G., et al. (2026). Kaonic atoms measurements with the SIDDHARTA-2 experiment at DAϕNE. POS PROCEEDINGS OF SCIENCE, 500 [10.22323/1.500.0172].
Kaonic atoms measurements with the SIDDHARTA-2 experiment at DAϕNE
Abbene L.;Buttacavoli A.;Principato F.;
2026-01-27
Abstract
Kaonic Atoms are a powerful tool to experimentally probe fundamental interactions, in particular Quantum Chromodynamics (QCD) and Quantum Electrodynamics (QED). The SIDDHARTA-2 experiment performs high-precision X-ray spectroscopy of kaonic atoms, and its main goal is to measure, for the first time, the X-ray transition to the fundamental level (2p → 1s) of Kaonic Deuterium. Alongside this measurement, SIDDHARTA-2 has also measured other kaonic atoms, such as Kaonic Helium-4 and Kaonic Neon. In this paper, various results of the experiment are reported, along with the proposed target precision for the kaonic deuterium measurement and the future plans of the collaboration.
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