Year: 2026
Type: preprint
Abstract: X-ray spectroscopy of kaonic atoms offers a unique experimental window on the interplay between low-energy strong interaction and precision atomic physics studies. This article reviews the scientific progress achieved with SIDDHARTA-2 at DAFNE and discusses how it shapes the next generation measurements. Particular emphasis is given to EXKALIBUR, a multifacility program designed to perform measurements of kaon-nucleus interactions across the periodic table and to extend kaonic atom spectroscopy toward precision tests of bound-state QED and the charged-kaon mass extraction. The first proposed strong interaction campaign at J-PARC aims to investigate kaonic atoms with solid Li, Be, and B targets using new 1-mm-thick Silicon Drift Detectors and high-resolution TES microcalorimeters, exploiting isotope pairs to isolate nuclear-structure and kaon-multinucleon effects. Measurements of Mg, Al, Si, and S with CdZnTe detectors will broaden this study toward heavier nuclei. EXKALIBUR will establish a systematic experimental framework for testing low-energy strong interaction with strangeness and bound-state QED predictions across a broad range of kaonic atoms.
Source: arXiv (Cornell University)
Authors: Sgaramella, F., Abbene, L., Artibani, F., Bazzi, M., Borghi, G., Bosnar, D., Bragadireanu, M., Buttacavoli, A., Clozza, A., Clozza, F., Del Grande, R., De Paolis, L., Dulski, K., Fiorini, C., Friščić, I., Guaraldo, C., Hashimoto, T., Iliescu, M. A., Iwasaki, M., Khreptak, A., Manti, S., Marton, J., Moskal, P., Ohnishi, H., Principato, F., Scordo, A., Silarski, M., Sirghi, D., Sirghi, F., Skurzok, M., Spallone, A., Toho, K., Zmeskal, J., Curceanu, C.
Institutions: Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, University of Palermo, Roma Tre University, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Politecnico di Milano, University of Zagreb, Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, University of Rome Tor Vergata, Czech Technical University in Prague, RIKEN, RIKEN Nishina Center, RIKEN Pioneering Research Institute, TU Wien, Jagiellonian University, Tohoku University, Research Center for Accelerator and Radioisotope Science, Tohoku University, Stefan Meyer Institute for Subatomic Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: Measurement of kaonic deuterium X-rays, G151277857, G2876658631, G3015317578, G3111662533, G3408410167, G3853406841, G3870388325, High-precision digitized spectroscopy in fundamental research in subatomic physics and applications, G4121823795, G4961146383, G5200089266, G523954640, Measurement of kaonic deuterium X-ray transitions, G6282225865, G630697907, G6891605106, G7171697364, G7651396250, G770382516, G8017362841
OpenAlex ID: W7220992083