New precision measurements of the strong interaction in kaonic hydrogen

• Published in: Few-body systems Vol. 44; no. 1-4; pp. 79 - 82
• Main Authors: Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Catitti, M., Curceanu (Petrascu), C., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Iliescu, M., Ishiwatari, T., Kienle, P., Lechner, P., Marton, J., Nikolics, K., Levi Sandri, P., Longoni, A., Lucherini, V., Pietreanu, D., Ponta, T., Sirghi, D. L., Sirghi, F., Soltau, H., Strüder, L., Vazquez Doce, O., Widmann, E., Zmeskal, J.
• Format: Journal Article
• Language: English
• Published: Vienna Springer-Verlag 01.12.2008; Springer Nature B.V
• Subjects: Atomic; Experiments; Hadrons; Heavy Ions; Hydrogen; Molecular; Nuclear Physics; Optical and Plasma Physics; Particle accelerators; Particle and Nuclear Physics; Particle physics; Physics; Physics and Astronomy; Spectrum analysis; X-rays; Frascati Italy; Exotic Atom; Kaonic Atom; Excellent Energy Resolution; High Precision Data; Kaonic Hydrogen
• ISSN: 0177-7963; 1432-5411
• DOI: 10.1007/s00601-008-0261-3

The DEAR experiment performed at the DAΦNE electron-positron collider (Frascati, Italy) studied the strong interaction shift and width of the 1 s state in kaonic hydrogen using X-ray spectroscopy. The repulsive character of the kaon-proton interaction at threshold was confirmed and the most precise values of the shift and width were obtained. However, high precision data at the percent level are highly requested to further develop the theories and thus our understanding of the low-energy antikaon-nucleon interaction. Therefore, a new series of precision experiments on kaonic hydrogen and kaonic deuterium are planned at LNF.