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New precision measurements of the strong interaction in kaonic hydrogen |
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| Authors: | M Bazzi G Beer L Bombelli A M Bragadireanu M Cargnelli M Catitti C Curceanu C Fiorini T Frizzi F Ghio B Girolami C Guaraldo M Iliescu T Ishiwatari P Kienle P Lechner J Marton K Nikolics P Levi Sandri A Longoni V Lucherini D Pietreanu T Ponta D L Sirghi F Sirghi H Soltau L Strüder O Vazquez Doce E Widmann J Zmeskal |
| Institution: | Laboratori Nazionali di Frascati, INFN, Frascati, Italy Dept. of Physics and Astronomy, Univ. of Victoria, Victoria, Canada IFIN-HH, Bucharest, Romania Stefan-Meyer-Institut, Austrian Academy of Sciences, Vienna, Austria Dip. di Elettronica, Politecnico di Milano, Milano, Italy INFN, Sez. di Roma I and Instituto Superiore di Sanità, Rome, Italy PNSensors GmbH, Munich, Germany MPI for Extraterrestrial Physics, Garching, Germany |
| Abstract: | The DEAR experiment performed at the DAΦNE electron-positron collider (Frascati, Italy) studied the strong interaction shift and width of the 1s 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. |
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