Search for the K-pp bound state via the 3He(K-,n) reaction at 1 GeV/c
Search for the K-pp bound state via the 3He(K-,n) reaction at 1 GeV/c
复制标题
通过 3He(K-,n) 反应在 1 GeV/c 下搜索 K-pp 结合态
DOI：
10.1088/1742-6596/569/1/012080
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Sakaguchi et al.
中科院分区：
文献类型：
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作者：
T. Hashimoto;H. Outa;A. Sakaguchi et al.
J-PARC E15实验通过J-PARC强子实验设备中K1.8BR束线上的{sup 3}He（K{sup −}，n）反应寻找最简单的K介子核束缚态K{sup −} pp“。我们在2013年5月进行了第一次数据采集，{sup 3}He靶上有5 × 10{sup 9}个入射K介子。初步的结果集中在前向中子能谱上，它显示了一个清晰的峰结构，由准弹性K{sup −n} → K{sup −}n和电荷交换K{sup −p} → K-bar {sup 0}n反应组成。
The J-PARC E15 experiment searches for the simplest kaonic nuclear bound state, K{sup −}pp'', via the {sup 3}He(K{sup −},n) reaction at the K1.8BR beam-line in the J-PARC hadron experimental facility. We performed the first data-taking in May, 2013, with 5 × 10{sup 9} incident kaons on the {sup 3}He target. The preliminary results are reported focusing on the forward-neutron spectrum, which shows a clear peak structure composed of the quasi-elastic K{sup −n} → K{sup −}n and the charge-exchange K{sup −p} → K-bar {sup 0}n reactions as expected.