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The kaonic atoms research program at DAΦNE : From SIDDHARTA to SIDDHARTA-2
In: 2017 International Conference on Exotic Atoms and Related Topics, EXA 2017,Vienna, Austria,-- EPJ Web of Conferences, Jg. 181 (2018-06-25)
Online
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Zugriff:
The interaction of antikaons with nucleons and nuclei in the low-energy regime represents an active research field in hadron physics with still many important open questions. The investigation of light kaonic atoms, in which one electron is replaced by a negatively charged kaon, is a unique tool to provide precise information on this interaction; the energy shift and the broadening of the low-lying states of such atoms, induced by the kaon-nucleus hadronic interaction, can be determined with high precision from the atomic X-ray spectroscopy, and this experimental method provides unique information to understand the low energy kaon-nucleus interaction at the production threshold. The lightest atomic systems, like the kaonic hydrogen and the kaonic deuterium deliver, in a model-independent way, the isospin-dependent kaon-nucleon scattering lengths. The most precise kaonic hydrogen measurement to-date, together with an exploratory measurement of kaonic deuterium, were carried out in 2009 by the SIDDHARTA collaboration at the DAΦNE electron-positron collider of LNF-INFN, combining the excellent quality kaon beam delivered by the collider with new experimental techniques, as fast and very precise X-ray detectors, like the Silicon Drift Detectors. The SIDDHARTA results triggered new theoretical work, which achieved major progress in the understanding of the low-energy strong interaction with strangeness reflected by the antikaon-nucleon scattering lengths calculated with the antikaon-proton amplitudes constrained by the SIDDHARTA data. The most important open question is the experimental determination of the hadronic energy shift and width of kaonic deuterium; presently, a major upgrade of the setup, SIDDHARTA-2, is being realized to reach this goal. In this paper, the results obtained in 2009 and the proposed SIDDHARTA-2 upgrades are presented.
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The kaonic atoms research program at DAΦNE : From SIDDHARTA to SIDDHARTA-2
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Autor/in / Beteiligte Person: | Scordo, A. ; Amirkhani, A. ; Bazzi, M. ; Bellotti, G. ; Berucci, C. ; Bosnar, D. ; Bragadireanu, A. M. ; Cargnelli, M. ; Curceanu, C. ; Dawood Butt, A. ; Del Grande, R. ; Fabbietti, L. ; Fiorini, C. ; Ghio, F. ; Guaraldo, C. ; Hayano, R. S. ; Iliescu, M. ; Iwasaki, M. ; Levi Sandri, P. ; Marton, J. ; Miliucci, M. ; Moskal, P. ; Pietreanu, D. ; Piscicchia, K. ; Shi, H. ; Silarski, M. ; Sirghi, D. ; Sirghi, F. ; Skurzok, M. ; Spallone, A. ; Tatsuno, H. ; Vazquez Doce, O. ; Widmann, E. ; Zmeskal, J. |
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Zeitschrift: | 2017 International Conference on Exotic Atoms and Related Topics, EXA 2017,Vienna, Austria,-- EPJ Web of Conferences, Jg. 181 (2018-06-25) |
Veröffentlichung: | 2018 |
Medientyp: | unknown |
ISSN: | 2101-6275 (print) |
DOI: | 10.1051/epjconf/201818101004 |
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