Speaker
Description
Amid the experimental results still needed to achieve a wide understanding of the Standard Model strong interaction mechanisms in the low-energy strangeness sector, the kaon-nucleon/nuclei interaction studies are a key component. The impact of these measurements ranges from various QCD models, like Chiral Symmetry Perturbation, Lattice QCD, etc., to nuclear physics and astrophysics.
The information in this scarcely explored field, from very low energies to the threshold and below, is accessible by studying the kaonic atoms, the kaon absorption processes and by low energy scattering of kaons on various nuclei.
These all make part of the KAONNIS scientific program, which encompasses a few experiments and addresses most of the above topics by taking advantage of several innovative detectors and of the unique low-energy kaon beam delivered by the DAɸNE collider in Frascati (Italy).
The first objective, followed by the SIDDHARTA/SIDDHARTA-2 collaborations, is extracting the charged anti-kaon nucleon scattering lengths by measuring the exotic X-ray transitions to the fundamental level in kaonic Hydrogen and kaonic Deuterium. Other X-ray lines in heavier kaonic atoms are investigated, as well. In parallel, the kaon multi-nucleon absorption is explored by the AMADEUS collaboration, while low-momenta kaon-nucleon/nuclei scattering study at DAFNE is part of an ongoing proposal. Last but not least, a precise determination of the charged kaon mass, still in debate between two incompatible measurements, is included between the SIDDHARTA-2 goals.
