Speaker
Description
A series of frontier experiments will be presented based on high sensitivity X-ray spectroscopy,aiming on one side to measure low-lying orbits transitions in exotic kaonic atoms at accelerators, on the other to unveil eventual signal from Pauli-violating atoms, predicted to be formed in theories beyond the Standard Model.
The first part of the talk will be dedicated to kaonic atoms studies in the framework of the SIDDHARTA experiment at the DAFNE Collider of LNF-INFN, Frascati (Roma) laboratory. The low energy kaon beam delivered by the DANE collider, combined with new experimental techniques, based on fast and high-resolution Silicon Drift Detectors (SDD), allowed unprecedented measurements on kaonic hydrogen and helium. Presently, a major upgrade of the setup, SIDDHARTA-2 is being realized to perform in the coming year(s) the first ever measurement of kaonic deuterium.Such experimental infomation is essential in the low-energy QCD in the sector ofthe strange quark, responsible for a delicate interplay among the spontaneous and explicit breaking of Chiral Symmetry.
In the second part of the talk the VIP-2 experiment will be presented. The SDDs based experimental apparatus is operated in the extremely low-background environment of the underground LNGS laboratory and aims to disclose eventual signal of non-Paulian Kalpha transitions in Copper atoms. The spin-statistics connection can be only demonstrated within Quantum Field Theory, on the basis of few assumptions which are intimately related to the same structure of space and time. Experimental evidence of evena tiny violation of the Pauli Exclusion Principle would be an indication of physics beyond the Standard Model.
| Topic | Fundamental Interactions |
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