Baryon interactions from lattice QCD with physical masses -- S = －3 sector: ΞΣ and ΞΛ-ΞΣ --
Baryon interactions from lattice QCD with physical masses -- S = －3 sector: ΞΣ and ΞΛ-ΞΣ --
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晶格 QCD 与物理质量的重子相互作用 -- S = -3 扇区：ΞΣ 和 ΞΛ-ΞΣ --
DOI：
10.1051/epjconf/201817505013
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
H. Nemura and K. Sasaki
中科院分区：
文献类型：
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作者：
N. Ishii;S. Aoki;T. Doi;S. Gongyo;T. Hatsuda;Y. Ikeda;T. Inoue;T. Iritani;T. Miyamoto;H. Nemura and K. Sasaki
超子-核子和超子-超子相互作用是研究超核物理中超核性质的重要内容。然而，与核子的稳定性不同，超子是不稳定的，直接散射实验很困难，这就导致了超子势的唯象确定存在很大的不确定性。在这次演讲中，我们使用在巨大空间体积（8：1fm）4上（几乎）物理点（mπ= 146 MeV）处产生的规范组态，介绍我们基于改进统计的HAL QCD方法从Nambu-Bethe-Salpeter波函数中获得的S = −3扇区（<$∑单通道和<$∑-<$Λ;耦合通道）超子-超子势的最新结果。
Hyperon-nucleon and hyperon-hyperon interactions are important in studying the properties of hypernuclei in hypernuclear physics. However, unlike the nucleons which are quite stable, hyperons are unstable so that the direct scattering experiments are difficult, which leads to the large uncertainty in the phenomenological determination of hyperon potentials. In this talk, we use the gauge configurations generated at the (almost) physical point (mπ= 146 MeV) on a huge spatial volume (8:1fm)4to present our latest result on the hyperon-hyperon potentials in S = −3 sector (Ξ∑ single channel and Ξ∑- ΞΛ; coupled channel) from the Nambu-Bethe-Salpeter wave functions based on the HAL QCD method with improved statistics.