Measurement of the kaonic Hydrogen X-ray spectrum

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.; Koike, T.; Lauss, B.; Lucherini, V.; Ludhova, Livia; Marton, J.; Mulhauser, Françoise; Ponta, T.; Schaller, Lukas A.; Seki, R.; Sirghi, D. L.; Sirghi, F.; Zmeskal, J.

doi:10.1103/PhysRevLett.94.212302

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Journal article

Measurement of the kaonic Hydrogen X-ray spectrum

Beer, G. Department of Physics and Astronomy, University of Victoria, British Columbia, Canada
Bragadireanu, A. M. Laboratori Nazionali di Frascati, INFN, Frascati, Italy - Institute of Physics and Nuclear Engineering "Horia Hulubei", Particle Physics Department, Bucharest, Romania
Cargnelli, M. Stefan Meyer Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Curceanu-Petrascu, C. Laboratori Nazionali di Frascati, INFN, Frascati, Italy
Egger, J.-P. Institut de Physique, Université de Neuchâtel, Switzerland
Fuhrmann, H. Stefan Meyer Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Guaraldo, C. Laboratori Nazionali di Frascati, INFN, Frascati, Italy
Iliescu, M. Laboratori Nazionali di Frascati, INFN, Frascati, Italy - Institute of Physics and Nuclear Engineering "Horia Hulubei", Particle Physics Department, Bucharest, Romania
Ishiwatari, T. Stefan Meyer Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Itahashi, K. Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, Japan
Iwasaki, M. Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, Japan
Kienle, P. Stefan Meyer Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria - Technical University, Munich, Germany
Koike, T. Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, Japan
Lauss, B. Department of Physics, University of California, 3Berkeley, California, USA
Lucherini, V. Laboratori Nazionali di Frascati, INFN, Frascati, Italy
Ludhova, Livia Institut de Physique, Université de Fribourg, Switzerland
Marton, J. Stefan Meyer Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria
Mulhauser, Françoise Institut de Physique, Université de Fribourg, Switzerland
Ponta, T. Institute of Physics and Nuclear Engineering "Horia Hulubei", Particle Physics Department, Bucharest, Romania
Schaller, Lukas A. Institut de Physique, Université de Fribourg, Switzerland
Seki, R. Department of Physics and Astrophysics, California State University, Northridge, California, USA - W.E. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California, USA
Sirghi, D. L. Laboratori Nazionali di Frascati, INFN, Frascati, Italy - Institute of Physics and Nuclear Engineering "Horia Hulubei", Particle Physics Department, Bucharest, Romania
Sirghi, F. Laboratori Nazionali di Frascati, INFN, Frascati, Italy
Zmeskal, J. Stefan Meyer Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria

02.06.2005

Published in:

Physical Review Letters. - 2005, vol. 94, no. 21, p. 212302

English The DEAR (DAΦNE exotic atom research) experiment measured the energy of x rays emitted in the transitions to the ground state of kaonic hydrogen. The measured values for the shift ε and the width Γ of the 1s state due to the K⁻p strong interaction are ε_1s=-193±37 (stat) ±6 (syst) eV and Γ_1s=249±111 (stat) ±30 (syst) eV, the most precise values yet obtained. The pattern of the kaonic hydrogen K-series lines, K_α, K_β, and K_γ, was disentangled for the first time.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

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