Study of the $$nn\Lambda $$ State and $$\Lambda n$$ Interaction at Jefferson Lab
Study of the $$nn\Lambda $$ State and $$\Lambda n$$ Interaction at Jefferson Lab
复制标题
杰斐逊实验室 $$nnLambda $$ 状态和 $$Lambda n$$ 相互作用的研究
DOI：
10.1007/s00601-021-01717-x
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发表时间：
2022
期刊：
影响因子：
1.6
通讯作者：
K. Itabashi et al. (SNN 13 of 24 ) for the JLab Hypernuclear Collaboration
中科院分区：
文献类型：
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作者：
Kurosawa Kosuke;Ono Haruka;Niihara Takafumi;Sakaiya Tatsuhiro;Kondo Tadashi;Tomioka Naotaka;Mikouchi Takashi;Genda Hidenori;Matsuzaki Takuya;Kayama Masahiro;Koike Mizuho;Sano Yuji;Murayama Masafumi;Satake Wataru;Matsui Takafumi;篠原 育;杉村昂;守屋佑希久;鈴木博;K. Itabashi et al. (SNN 13 of 24 ) for the JLab Hypernuclear Collaboration
由两个中子和一个λ超子组成的An是一个不带电荷的多重子系统。研究这种状态将提供关于相互作用的信息，而这些信息还没有通过散射实验直接测量。在Jefferson实验室进行实验（E12-17-003）以搜索状态。如果能观察到一个峰的自然宽度，那么它对束缚态和共振态都有灵敏度。实验分别用氢和氚气体靶进行质量标定和生产.对基元反应进行质量校正，质量分辨率为1.5FWHM左右.得到了一个能谱，并应用一个简单的末态相互作用模型再现了该能谱。
An, which consists of two neutrons and a Lambda hyperon, is a multi-baryon system with no charge. Studying thestate would provide information about theinteraction which has not been directly measured by a scattering experiment. The experiment (E12-17-003) was performed in order to search for thestate at Jefferson Lab. Theis expected to be produced by thereaction, which has sensitivity to both bound and resonance states if the natural width of theis narrow enough to be observed as a peak. The experiment used gas targets of hydrogen and tritium for mass calibration and theproduction, respectively. The mass calibration withreactions gave the mass resolution of theandeach 3.5FWHM, for the elementary reaction. A spectrum ofwas obtained, and a simple model with afinal state interaction was applied to reproduce the spectrum.