Formation of η' (958)-mesic nuclei by (p,d) reaction
Formation of η' (958)-mesic nuclei by (p,d) reaction
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通过 (p,d) 反应形成 η (958)-mesic 核
DOI：
10.1103/physrevc.87.045201
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
S. Hirenzaki
中科院分区：
文献类型：
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作者：
H. Nagahiro;D. Jido;H. Fujioka;K. Itahashi;S. Hirenzaki
我们从理论上计算了反应中-核系统的形成谱，用于研究介质中的修饰。我们给出了基于不同势深的原子核中光学势的简单形式的全面的数值计算。我们的结论是，当吸引势大于100 MeV，吸收宽度为40 MeV或更小时，在AsC等轻核中，人们发现了可能存在吸引相互作用的证据，即出现在阈值附近的峰结构。反应光谱预计将在现有的设备上进行实验，如GSI。我们还估算了质量与介子接近的介子的贡献，得出的结论是，中子核的峰结构的观测没有受到干扰，尽管它们的贡献可能不小。
We calculate theoretically the formation spectra of-nucleus systems in thereaction for the investigation of in-medium modification of themass. We show comprehensive numerical calculations based on a simple form of theoptical potential in nuclei with various potential depths. We conclude that one finds evidence of a possible attractive interaction betweenand the nucleus as a peak structure appearing around thethreshold in light nuclei such asC, when the attractive potential is stronger than 100 MeV and the absorption width is of order 40 MeV or less. Spectroscopy of thereaction is expected to be performed experimentally at existing facilities, such as GSI. We also estimate the contributions from theandmesons, which have masses close to themeson, concluding that the observation of the peak structure of the-mesic nuclei is not disturbed, although their contributions may not be small.