Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10723696 | Physics Letters B | 2009 | 5 Pages |
Abstract
The kaonic helium-4 3dâ2p X-ray transition was measured in a gaseous target, where Compton scattering in helium is negligible. The X-rays were detected with large-area Silicon Drift Detectors (SDDs) using the timing information of the K+Kâ pairs produced by Ï decays at the DAΦNE e+eâ collider. A new value of the strong interaction shift of the kaonic 4He 2p state was determined to be 0±6 (stat)±2 (syst) eV, which confirms the recently obtained result by the KEK-PS E570 group.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
SIDDHARTA Collaboration SIDDHARTA Collaboration, M. Bazzi, G. Beer, L. Bombelli, A.M. Bragadireanu, M. Cargnelli, G. Corradi, C. Curceanu (Petrascu), A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, B. Girolami, C. Guaraldo, R.S. Hayano, M. Iliescu,