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arXiv 1205.0640nucl-ex
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K介子~ 3 He和~ 4 He 2 p能级强相互作用宽度的测量

Measurements of the strong-interaction widths of the kaonic 3He and 4He 2p levels

The SIDDHARTA collaboration, M. Bazzi, G. Beer, L. Bombelli, A. M. Bragadireanu, M. Cargnelli, C. Curceanu, A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, C. Guar… 展开作者

The SIDDHARTA collaboration, M. Bazzi, G. Beer, L. Bombelli, A. M. Bragadireanu, M. Cargnelli, C. Curceanu, A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, C. Guaraldo, R. S. Hayano, M. Iliescu, T. Ishiwatari, M. Iwasaki, P. Kienle, P. Levi Sandri, A. Longoni, J. Marton, S. Okada, D. Pietreanu, T. Ponta, A. Rizzo, A. Romero Vidal, E. Sbardella, A. Scordo, H. Shi, D. L. Sirghi, F. Sirghi, H. Tatsuno, A. Tudorache, V. Tudorache, O. Vazquez Doce, B. Wunschek, E. Widmann, J. Zmeskal

摘要:

在SIDDHARTA实验中测量了3d-2 p跃迁中的K介子3 He和4 He X射线。测得3 He和4 He的K介子2 p态的宽度为:γ 2 p(3 He)= 6 \pm 6(stat.)\pm 7(系统)eV,γ 2 p(4He)= 14 \pm 8(stat.)\pm 5(系统)eV,分别。这两个结果与理论预测一致。K ~ 4 He的宽度远小于70年代和80年代实验测定的55 \pm 34 eV,而K ~ 3 He的宽度是首次测定。

英文摘要:

The kaonic 3He and 4He X-rays emitted in the 3d-2p transitions were measured in the SIDDHARTA experiment. The widths of the kaonic 3He and 4He 2p states were determined to be Gamma_2p(3He) = 6 \pm 6 (stat.) \pm 7 (syst.) eV, and Gamma_2p(4He) = 14 \pm 8 (stat.) \pm 5 (syst.) eV, respectively. Both results are consistent with the theoretical predictions. The width of kaonic 4He is much smaller than the value of 55 \pm 34 eV determined by the experiments performed in the 70's and 80's, while the width of kaonic 3He was determined for the first time.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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