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arXiv 1606.09157nucl-exnucl-th
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丰中子超核$^{7}_Λ$ He的电子散射能谱

Spectroscopy of the neutron-rich hypernucleus $^{7}_Λ$He from electron scattering

T. Gogami, C. Chen, D. Kawama, P. Achenbach, A. Ahmidouch, I. Albayrak, D. Androic, A. Asaturyan, R. Asaturyan, O. Ates, P. Baturin, R. Badui, W. Boeglin, J. Bo… 展开作者

T. Gogami, C. Chen, D. Kawama, P. Achenbach, A. Ahmidouch, I. Albayrak, D. Androic, A. Asaturyan, R. Asaturyan, O. Ates, P. Baturin, R. Badui, W. Boeglin, J. Bono, E. Brash, P. Carter, A. Chiba, E. Christy, S. Danagoulian, R. De Leo, D. Doi, M. Elaasar, R. Ent, Y. Fujii, M. Fujita, M. Furic, M. Gabrielyan, L. Gan, F. Garibaldi, D. Gaskell, A. Gasparian, Y. Han, O. Hashimoto, T. Horn, B. Hu, Ed. V. Hungerford, M. Jones, H. Kanda, M. Kaneta, S. Kato, M. Kawai, H. Khanal, M. Kohl, A. Liyanage, W. Luo, K. Maeda, A. Margaryan, P. Markowitz, T. Maruta, A. Matsumura, V. Maxwell, A. Mkrtchyan, H. Mkrtchyan, S. Nagao, S. N. Nakamura, A. Narayan, C. Neville, G. Niculescu, M. I. Niculescu, A. Nunez, Nuruzzaman, Y. Okayasu, T. Petkovic, J. Pochodzalla, X. Qiu, J. Reinhold, V. M. Rodriguez, C. Samanta, B. Sawatzky, T. Seva, A. Shichijo, V. Tadevosyan, L. Tang, N. Taniya, K. Tsukada, M. Veilleux, W. Vulcan, F. R. Wesselmann, S. A. Wood, T. Yamamoto, L. Ya, Z. Ye, K. Yokota, L. Yuan, S. Zhamkochyan, L. Zhu

摘要:

在托马斯·杰斐逊国家加速器设施C厅,使用$^{7}$ Li $(e,e^{\prime}K^{+})^{7}_Λ$ He反应,对$^{7}_Λ$ He超核进行了缺失的质谱分析。测定了基态的$Λ$结合能(1/2 $^{+}$),其误差小于先前测量的误差,为$B_Λ$ = 5.55 $\pm$ 0.10(stat.)$\pm$ 0.11(系统)兆电子伏该实验也为p壳层超核系统的电荷对称性破缺提供了新的见解。最后,在$B_Λ$ = 3.65 $\pm$ 0.20(统计)处出现峰值。$\pm$ 0.11(系统)MeV被观察到并被指定为3/2 $^{+}$和5/2 $^{+}$状态的混合物,证实了$Λ$的“类胶”行为,这使得$^{6}$ He中的不稳定状态对中子发射稳定。

英文摘要:

The missing mass spectroscopy of the $^{7}_Λ$He hypernucleus was performed, using the $^{7}$Li$(e,e^{\prime}K^{+})^{7}_Λ$He reaction at the Thomas Jefferson National Accelerator Facility Hall C. The $Λ$ binding energy of the ground state (1/2$^{+}$) was determined with a smaller error than that of the previous measurement, being $B_Λ$ = 5.55 $\pm$ 0.10(stat.) $\pm$ 0.11(sys.) MeV. The experiment also provided new insight into charge symmetry breaking in p-shell hypernuclear systems. Finally, a peak at $B_Λ$ = 3.65 $\pm$ 0.20(stat.) $\pm$ 0.11(sys.) MeV was observed and assigned as a mixture of 3/2$^{+}$ and 5/2$^{+}$ states, confirming the "gluelike" behavior of $Λ$, which makes an unstable state in $^{6}$He stable against neutron emission.

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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