Preliminary study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAΦNE.
Preliminary study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAΦNE.
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DOI:
10.1016/j.nuclphysa.2013.03.001
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发表时间:
2013-06-03
影响因子:
1.4
通讯作者:
Zmeskal, J.
中科院分区:
文献类型:
--
作者:
Bazzi, M.;Beer, G.;Berucci, C.;Bombelli, L.;Bragadireanu, A. M.;Cargnelli, M.;Curceanu (Petrascu), C.;d'Uffizi, A.;Fiorini, C.;Frizzi, T.;Ghio, F.;Guaraldo, C.;Hayano, R.;Iliescu, M.;Ishiwatari, T.;Iwasaki, M.;Kienle, P.;Sandri, P. Levi;Longoni, A.;Marton, J.;Okada, S.;Pietreanu, D.;Ponta, T.;Vidal, A. Romero;Sbardella, E.;Scordo, A.;Shi, H.;Sirghi, D. L.;Sirghi, F.;Tatsuno, H.;Tudorache, A.;Tudorache, V.;Doce, O. Vazquez;Widmann, E.;Zmeskal, J.
关键词:
The study of the system at very low energies plays a key role for the understanding of the strong interaction between hadrons in the strangeness sector. At the DAΦNE electron–positron collider of Laboratori Nazionali di Frascati we studied kaonic atoms with and , taking advantage of the low-energy charged kaons from Φ-mesons decaying nearly at rest. The SIDDHARTA experiment used X-ray spectroscopy of the kaonic atoms to determine the transition yields and the strong interaction induced shift and width of the lowest experimentally accessible level (1s for H and D and 2p for He). Shift and width are connected to the real and imaginary part of the scattering length. To disentangle the isospin dependent scattering lengths of the antikaon–nucleon interaction, measurements of and of are needed. We report here on an exploratory deuterium measurement, from which a limit for the yield of the K-series transitions was derived: and (CL 90%). Also, the upcoming SIDDHARTA-2 kaonic deuterium experiment is introduced.
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