We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Kaonic hydrogen X-rays — experiments at DAFNE.
- Authors
Cargnelli, M.; Ishiwatari, T.; Kienle, P.; Marton, J.; Widmann, E.; Zmeskal, J.; Beer, G.; Bragadireanu, A. M.; Ponta, T.; Bazzi, M.; Catitti, M.; Curceanu (Petrascu), C.; Guaraldo, C.; Iliescu, M.; Sandri, P. Levi; Lucherini, V.; Pietreanu, D.; Sirghi, D. L.; Sirghi, F.; Lechner, P.
- Abstract
At the DAΦNE electron–positron collider of Laboratori Nazionali di Frascati we study kaonic atoms, taking advantage of the low-energy kaons produced in the Φ-meson decay. The low-energy kaon–nucleon interaction in kaonic hydrogen and kaonic deuterium can be investigated under favorable conditions. The DEAR (DAΦNE Exotic Atom Research) experiment at LNF delivered the most precise data on kaonic hydrogen up to now. DEAR and its follow-up experiment SIDDHARTA (Silicon Drift Detector for Hadronic Atom Research by Timing Application) are using X-ray spectroscopy of kaonic hydrogen and kaonic deuterium atoms to measure the strong interaction-induced shift and width of the ground state. From these quantities the isospin-dependent antikaon–nucleon scattering lengths can be determined, quantities useful for testing the understanding of chiral symmetry breaking in the strangeness sector. Within the SIDDHARTA project new X-ray detectors are being developed. We will use an array of large area silicon drift detectors (SDDs) having excellent energy resolution but also providing a timing capability that will result in a huge suppression of background and so overcome the precision limits of the former experiments.PACS Nos.: 36.10.k, 13.75.Jz, 32.30.Rj and 29.40.Wk
- Subjects
KAONS; ATOMS; HEAVY particles (Nuclear physics); MESONS; STRANGE particles; PHYSICS
- Publication
Canadian Journal of Physics, 2007, Vol 85, Issue 5, p479
- ISSN
0008-4204
- Publication type
Article
- DOI
10.1139/P07-030