Measurement of the kaonic hydrogen X-ray spectrum

Measurement of the kaonic hydrogen X-ray spectrum

The DEAR (DAPhiNE 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 epsilon and the width Gamma of the 1s state due to the K(-)p strong interaction are epsilon(1s)=-193 +/- 37 (stat) +/-...

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Veröffentlicht in:Physical review letters 2005-06, Vol.94 (21), p.212302.1-212302.4, Article 212302
Hauptverfasser: BEER, G, BRAGADIREANU, A. M, IWASAKI, M, KIENIE, P, KOIKE, T, LAUSS, B, LUCHERINI, V, LUDHOVA, L, MARTON, J, MULHAUSER, F, PONTA, T, SCHALLER, L. A, CARGNELLI, M, SEKI, R, SIRGHI, D. L, SIRGHI, F, ZMESKAL, J, CURCEANU-PETRASCU, C, EGGER, J.-P, FUHRMANN, H, GUARALDO, C, ILIESCU, M, ISHIWATARI, T, ITAHASHI, K
Format: Artikel
Sprache:eng
Schlagworte:
CHIRAL SYMMETRY
EV RANGE 100-1000
Exact sciences and technology
GAMMA SPECTRA
GROUND STATES
HYDROGEN
KAON-PROTON INTERACTIONS
KAONIC ATOMS
KAONS MINUS
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
S STATES
STRONG INTERACTIONS
SYMMETRY BREAKING
X-RAY SPECTRA
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Zusammenfassung:The DEAR (DAPhiNE 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 epsilon and the width Gamma of the 1s state due to the K(-)p strong interaction are epsilon(1s)=-193 +/- 37 (stat) +/- 6 (syst) eV and Gamma(1s)=249 +/- 111 (stat) +/- 30 (syst) eV, the most precise values yet obtained. The pattern of the kaonic hydrogen K-series lines, K(alpha), K(beta), and K(gamma), was disentangled for the first time.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.94.212302