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26 April 2024

» pubmed » pmid16090312

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Measurement of the kaonic hydrogen x-ray spectrum
G Beer ; A M Bragadireanu ; M Cargnelli ; C Curceanu-Petrascu ; J-P Egger ; H Fuhrmann ; C Guaraldo ; M Iliescu ; T Ishiwatari ; K Itahashi ; M Iwasaki ; P Kienle ; T Koike ; B Lauss ; V Lucherini ; L Ludhova ; J Marton ; F Mulhauser ; T Ponta ; L A Schaller ; R Seki ; D L Sirghi ; F Sirghi ; J Zmeskal ; ;
Date:	3 Jun 2005
Journal:	Phys Rev Lett, 94 (21), 212302
Abstract:	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.
Source:	PubMed, pmid16090312
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