EPJ Web Conf.
Volume 199, 2019MESON 2018 – 15th International Workshop on Meson Physics
|Number of page(s)||6|
|Published online||01 February 2019|
Spectroscopy of kaonic atoms at DAFNE and J-PARC
1 Stefan-Meyer-Institut für Subatomare Physik, Vienna, Austria
2 INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy
3 Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Magurele, Romania
4 Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria and INFN Sezione di Milano, Milano, Italy
5 Department of Physics, Faculty of Science, University of Zagreb, Croatia
6 Excellence Cluster Universe, Technische Universiät München, Garching, Germany
7 INFN Sez. di Roma I and Inst. Superiore di Sanita, Roma, Italy
8 RIKEN, Tokyo, Japan
9 The M. Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland
10 Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”, Roma, Italy
11 Lund Univeristy, Lund, Sweden
* e-mail: firstname.lastname@example.org
Published online: 1 February 2019
The interaction of antikaons (K−) with nucleons and nuclei in the low-energy regime represents a very active research field in hadron physics. A unique and rather direct experimental access to the antikaon-nucleon scattering lengths is provided by precision X-ray spectroscopy of transitions in low-lying states in the lightest kaonic atoms (i.e. kaonic hydrogen and deuterium). In the SIDDHARTA experiment at the electron-positron collider DAFNE of LNFINFN we measured the most precise values of the strong interaction observables in conic hydrogen. The strong interaction on the 1s ground state of the electromagnetically bound K-p atom causes an energy shift and broadening of the 1s state. SIDDHARTA will extend the spectroscopy to kaonic deuterium to get access to the antikaon-neutron interaction and thus the isospin dependent scattering lengths. At J-PARC a kaon beam is used in a complementary experiment with a different setup for spectroscopy of kaonic deuterium atoms. The talk will give an overview of the of the upcoming experiments SIDDHARTA and the complementary experiment at J-PARC.Furthermore, the implications of the experiments for the theory of low-energy strong interaction with strangeness will be discussed.
© The Authors, published by EDP Sciences, 2019
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