Speaker
Description
The interaction of antikaons with nucleons and nuclei in the low-energy regime represents an active research field in hadron physics and offers a unique tool to understand the low energy kaon-nucleus interaction at threshold. The lightest atomic systems, namely the kaonic hydrogen and the kaonic deuterium, provide the isospin dependent kaon-nucleon scattering lengths by measuring the X-rays emitted during their de-excitation to the 1s level. The most important experimental information missing in the field of the low-energy antikaon-nucleon interactions is the experimental determination of the hadronic energy shift and width of kaonic deuterium. The kaonic deuterium X-ray measurement will be realized by the new SIDDHARTA-2 experiment. The experimental challenge of the kaonic deuterium measurement is the very small X-rays yield, the even larger width (compared to kaonic hydrogen) and the difficulty to perform X-rays spectroscopy with weak signals in the high radiation environment of DAFNE. The SIDDHARTINO setup was installed in DAFNE in Spring 2019 for kaonic helium test run, followed by the kaonic deuterium measurement with the SIDDHARTA-2 setup in 2020.
