The high-precision kaonic neon X-ray transitions measurement performed by the SIDDHARTA-2 collaboration at the DAΦNE collider is reported. Both the X-ray energies and yields for high-n transitions were measured, demonstrating the feasibility of sub-eV Xray spectroscopy for kaonic atoms using low-Z gaseous targets. The measurement provides valuable insights into the de-excitation processes in kaonic atoms, providing new input data for the refinement of the corresponding theoretical models, and a framework for testing Quantum Electrodynamics in strange exotic atoms.
@article{arxiv.2412.16101,
title = {High precision X-ray spectroscopy of kaonic neon},
author = {F Sgaramella and D Sirghi and K Toho and F Clozza and L Abbene and C Amsler and F Artibani and M Bazzi and G Borghi and D Bosnar and M Bragadireanu and A Buttacavoli and M Cargnelli and M Carminati and A Clozza and R Del Grande and L De Paolis and K Dulski and L Fabbietti and C Fiorini and I Friščić and C Guaraldo and M Iliescu and M Iwasaki and A Khreptak and S Manti and J Marton and P Moskal and F Napolitano and S Niedźwiecki and H Ohnishi and K Piscicchia and F Principato and A Scordo and M Silarski and F Sirghi and M Skurzok and A Spallone and L G Toscano and M Tüchler and O Vazquez Doce and E Widmann and J Zmeskal and C Curceanu},
journal= {arXiv preprint arXiv:2412.16101},
year = {2024}
}