Florin Sirghi

TL;DR: In this article, the K-series x rays of kaonic hydrogen atoms at the DANE electron-positron collider of Laboratori Nazionali di Frascati, and have de-termined the most precise values of the strong-interaction energy-level shift and width of the 1s atomic state.

TL;DR: The DEAR (DAPhiNE exotic atom research) experiment measured the energy of x rays emitted in the transitions to the ground state of Kaonic hydrogen and the pattern of the kaonic hydrogen K-series lines, K(alpha), K(beta), and K(gamma), was disentangled for the first time.

TL;DR: In this article, the SIDDHARTA Collaboration measured the K-series X rays of kaonic hydrogen atoms at the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati, and determined the most precise values of the strong-interaction induced shift and width of the 1 s atomic energy level.

TL;DR: In this article, the strong interaction shift of the kaonic 4He 2p state was determined to be 0 ± 6 (stat) ± 2 (syst) eV, which confirmed the recently obtained result by the KEK-PS E570 group.

TL;DR: In this article, an experimental test of the validity of the Pauli exclusion principle for electrons is described, based on a straightforward idea put forward a few years ago by Ramberg and Snow (Phys. Lett. B 238:438, 1990).