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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.

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

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...