The DEAR experiment—first results on kaonic hydrogen

Zmeskal, J.; Beer, G.; Bragadireanu, A. M.; Cargnelli, M.; Curceanu (Petrascu), C.; Egger, J.-P.; Fuhrmann, H.; Guaraldo, C.; Iliescu, M.; Ishiwatari, T.; Itahashi, K.; Iwasaki, M.; Kienle, P.; Lauss, B.; Lucherini, V.; Ludhova, Livia; Marton, J.; Mulhauser, Françoise; Ponta, T.; Schaller, Lukas A.; Seki, R.; Sirghi, D.L.; Sirghi, F.

doi:10.1016/j.nuclphysa.2005.02.078

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Journal article

The DEAR experiment—first results on kaonic hydrogen

Zmeskal, J. Stefan Meyer Insitut fuer subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Beer, G. University of Victoria, Department of Physics and Astronomy, Canada
Bragadireanu, A. M. INFN, Laboratori Nazionali di Frascati, Frascati, Italy - Institute of Physics and Nuclear Engineering “Horia Hulubei”, Bucharest, Romania
Cargnelli, M. Stefan Meyer Insitut fuer subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Curceanu (Petrascu), C. INFN, Laboratori Nazionali di Frascati, Frascati, Italy - Institute of Physics and Nuclear Engineering “Horia Hulubei”, Bucharest, Romania
Egger, J.-P. University de Neuchatel, Institute de Physique, Switzerland
Fuhrmann, H. Stefan Meyer Insitut fuer subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Guaraldo, C. INFN, Laboratori Nazionali di Frascati, Frascati, Italy
Iliescu, M. INFN, Laboratori Nazionali di Frascati, Frascati, Italy - Institute of Physics and Nuclear Engineering “Horia Hulubei”, Bucharest, Romania
Ishiwatari, T. Stefan Meyer Insitut fuer subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Itahashi, K. Institute of Physical and Chemical Research (RIKEN), Wako, Saitama Japan
Iwasaki, M. Institute of Physical and Chemical Research (RIKEN), Wako, Saitama Japan
Kienle, P. Stefan Meyer Insitut fuer subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Lauss, B. University of California, Department of Physics, Berkeley, USA
Lucherini, V. INFN, Laboratori Nazionali di Frascati, Frascati, Italy
Ludhova, Livia Université de Fribourg, Institute de Physique, Switzerland
Marton, J. Stefan Meyer Insitut fuer subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Mulhauser, Françoise Université de Fribourg, Institute de Physique, Switzerland
Ponta, T. Institute of Physics and Nuclear Engineering “Horia Hulubei”, Bucharest, Romania
Schaller, Lukas A. Université de Fribourg, Institute de Physique, Switzerland
Seki, R. W.K. Kellog Radiation Laboratory, California Institute of Technology, Pasadena, USA - Department of Physics and Astrophysics, California State University, Northridge, USA
Sirghi, D.L. INFN, Laboratori Nazionali di Frascati, Frascati, Italy - Institute of Physics and Nuclear Engineering “Horia Hulubei”, Bucharest, Romania
Sirghi, F. INFN, Laboratori Nazionali di Frascati, Frascati, Italy

26.02.2005

Published in:

Nuclear Physics A. - 2005, vol. 754, p. 369-374

English The goal of the DEAR (DAΦNE exotic atom research) experiment is the precise determination of the isospin dependent antikaon–nucleon scattering lengths. The experiment accurately measures the Kα line shift and broadening, due to the strong interaction, in kaonic hydrogen and, for the first time, in kaonic deuterium. A precision measurement of kaonic hydrogen tests chiral symmetry breaking in systems with strangeness. An initial analysis of the DEAR experiment yields a shift ε_1s=−195±45 eV and a width Γ_1s=250±125 eV, which is more precise than the previous kaonic X-ray experiment KpX at KEK, and allows for the first time to disentangle the full pattern of the kaonic hydrogen K-series line Kα, Kβ and Kγ.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language

English

Classification

Physics

License

License undefined

Identifiers

RERO DOC 5308
DOI 10.1016/j.nuclphysa.2005.02.078

Persistent URL

https://folia.unifr.ch/unifr/documents/299911

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