Strong-interaction shifts and widths of kaonic helium isotopes

The kaonic (3)He and (4)He [Formula: see text] transitions in gaseous targets were observed by the SIDDHARTA experiment. The X-ray energies of these transitions were measured with large-area silicon-drift detectors using the timing information of the [Formula: see text] pairs produced by the DAΦNE [...

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Detalles Bibliográficos
Autores principales: Ishiwatari, T., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Curceanu (Petrascu), C., dʼUffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., Zmeskal, J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: North Holland Pub. Co 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778894/
https://www.ncbi.nlm.nih.gov/pubmed/24068854
http://dx.doi.org/10.1016/j.nuclphysa.2012.12.020
Descripción
Sumario:The kaonic (3)He and (4)He [Formula: see text] transitions in gaseous targets were observed by the SIDDHARTA experiment. The X-ray energies of these transitions were measured with large-area silicon-drift detectors using the timing information of the [Formula: see text] pairs produced by the DAΦNE [Formula: see text] collider. The strong-interaction shifts and widths both of the kaonic (3)He and (4)He 2p states were determined, which are much smaller than the results obtained by the previous experiments. The “kaonic helium puzzle” (a discrepancy between theory and experiment) was now resolved.

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