Production of hyperon resonances induced by kaons on a deuteron target
Production of hyperon resonances induced by kaons on a deuteron target
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由 kaons 在氘核靶上诱导高子共振的产生
DOI：
10.1093/ptep/ptt009
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
D. Jido
中科院分区：
文献类型：
--
作者：
J. Yamagata-Sekihara;T. Sekihara;D. Jido
本文从理论上研究了K-d →π YN反应，研究了K −诱导的超子共振态<$385和Λ 1405的产生。为此，我们考虑了介子-重子两体散射的p波振幅和p波振幅。由于该反应中超子共振选择性地从通道中产生，在1420 MeV处出现了Λ（1405）峰，这意味着在K-d → nX反应中发射核子的丢失质量谱中可以分别看到Λ（1405）和Λ（1385）。π尹变质量谱与实验数据一致。的π交换贡献也包括在内，并发现给一个光滑的背景，而不扭曲的超子共振峰结构。AMS科目分类D32
TheK–d→πYNreaction is theoretically studied to investigate theK−-induced production of the hyperon resonances Σ(1385) and Λ(1405). For this purpose, we take into account thep-wave amplitudes for meson–baryon two-body scatterings as well as thes-wave amplitudes. Due to the fact that the hyperon resonances are selectively produced from thechannel in this reaction, the Λ(1405) peak appears at 1420 MeV, which implies that Λ(1405) and Σ(1385) could be separately seen in the missing-mass spectrum of the emitted nucleon in theK−d→nXreaction. TheπYinvariant-mass spectrum in this study is consistent with experimental data both for Σ(1385) and Λ(1405). The pion exchange contributions are also included and are found to give a smooth background without distorting the peak structure of the hyperon resonances. AMS Subject Classification D32