This workshop will be dedicated to the memory of Professor Carlo Guaraldo and Professor Johannes Zmeskal, who strongly contributed to the worldwide research on exotic atoms, leading and running experiments at DAFNE, J-PARC and PSI.
Prof. Carlo Guaraldo, from INFN-LNF, Deputy Scientific Coordinator of the STRONG-2020 project, passed away on 19th May 2024 in Rome.
Prof. Johannes Zmeskal, from SMI-Vienna, Coordinator of the JRA8-WP26 of the STRONG-2020 project, passed away on 23rd July 2024 in Vienna.
KAMPAI - Kaonic, Antiprotonic, Muonic, Pionic and “onia” exotic Atoms: Interchanging knowledge and recent results
Kaonic, antiprotonic, muonic and pionic atoms, as well as the so-called “onia”, are exotic systems where one or more sub-atomic particles are replaced by a different particle of identical charge. In particular kaons, pions or antiprotons replacing one of the orbital electrons are used to form hadronic atoms, while a muon forms a leptonic exotic atom. Finally, in a “hydrogen-like” configuration, a bound pair of a particle and its antiparticle or of two leptons represents an exotic system called onium; some of these states, like muonium, positronium and pionium, have been already experimentally observed but others may exist; their observation could enable important tests for both QCD and QED. All these exotic atoms represent unique tools for testing the foundation of electromagnetic, strong and even gravitational interactions. It is thus the right time for discussing synergy and exchanging information between the physics communities involved in exotic atoms studies.