Speaker
Description
The study of kaonic atoms plays a key role for the understanding of the low-energy quantum chromodynamics (QCD) in the strangeness sector, by allowing to directly access the antikaon-nucleus interaction at threshold. State-of-the-art X-ray detectors and suitable experimental technologies allow to perform kaonic atoms X-ray spectroscopy with unprecedented precision, providing fundamental results for the nuclear, particle and astrophysics research. To this end, the SIDDHARTA-2 experiment at INFN-LNF DAFNE collider is carrying on its data taking campaign, aiming at performing high precision X-ray spectroscopy of kaonic atoms, in particular the first measurement of kaonic deuterium X-ray transition to the fundamental level to completely solve the isospin-dependent antikaon-nucleon scattering length. The scientific case, the SIDDHARTA-2 experimental apparatus as well as the kaonic helium measurement performed during the DAFNE commissioning phase in 2021 will be presented.
