https://doi.org/10.1140/epja/s10050-023-00976-y
Regular Article – Experimental Physics
Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DA
NE
1
INFN-LNF, Istituto Nazionale di Fisica Nucleare-Laboratori Nazionali di Frascati, 00044, Frascati, Roma, Italy
2
Stefan-Meyer-Institut für Subatomare Physik, 1030, Vienna, Austria
3
University of Vienna, Vienna Doctoral School in Physics, 1090, Vienna, Austria
4
Department of Physics, Faculty of Science, University of Zagreb, 10000, Zagreb, Croatia
5
Horia Hulubei National Institute of Physics and Nuclear Engineering IFIN-HH Măgurele, Măgurele, Romania
6
Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, 20133, Milano, Italy
7
INFN Sezione di Milano, 20133, Milan, Italy
8
Physik Department E62, Technische Universität München, 85748, Garching, Germany
9
RIKEN, 351-0198, Tokyo, Japan
10
Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, 30-348, Krakow, Poland
11
Center for Theranostics, Jagiellonian University, Krakow, Poland
12
Research Center for Electron Photon Science (ELPH), Tohoku University, 982-0826, Sendai, Japan
13
Centro Ricerche Enrico Fermi-Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”, 00184, Roma, Italy
a
francesco.sgaramella@lnf.infn.it
Received:
16
December
2022
Accepted:
10
March
2023
Published online:
23
March
2023
The SIDDHARTA-2 experiment installed at the DANE collider of INFN-LNF performed, for the first time, measurements of high-n transitions in intermediate mass kaonic atoms during the data taking campaigns of 2021 and 2022. Kaonic carbon, oxygen, nitrogen and aluminium transitions, which occur in the setup materials, were measured by using the kaons stopped in the gaseous helium target cell with aluminium frames and Kapton walls, and are reported in this paper. These new kaonic atoms measurements add valuable input to the kaonic atoms transitions data base, which is used as a reference for theories and models of the low-energy strong interaction between antikaon and nuclei. Moreover, these results pave the way for future dedicated kaonic atoms measurements through the whole periodic table and to a new era for the antikaon-nuclei studies at low energy.
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