Attractive N phi interaction and two-pion tail from lattice QCD near physical point
Attractive N phi interaction and two-pion tail from lattice QCD near physical point
复制标题
有吸引力的 N phi 相互作用和来自物理点附近晶格 QCD 的二π介子尾
DOI：
10.1103/physrevd.106.074507
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发表时间：
2022
影响因子：
5
通讯作者：
Sugiura Takuya
中科院分区：
文献类型：
--
作者：
Lyu Yan;Doi Takumi;Hatsuda Tetsuo;Ikeda Yoichi;Meng Jie;Sasaki Kenji;Sugiura Takuya
基于夸克质量近似的（）味格点QCD模拟，首次给出了介子与核子（）相互作用的结果。利用HAL QCD方法，通过相互作用势将自旋通道中自旋的时空关联转化为散射相移。这种潜力似乎是一个短距离吸引力的核心和一个长距离吸引力的尾巴的组合。后者被发现是一致的，从色偶极子和核子之间的相互作用获得的双π交换（TPE）。计算了两种情况下的散射长度和有效射程.的散射长度的大小示出具有非平凡的依赖性，并且是敏感的存在的长程尾从TPE。
First results on the interaction between the-meson and the nucleon () are presented based on the ()-flavor lattice QCD simulations with nearly physical quark masses. Using the HAL QCD method, the spacetime correlation of thesystem in the spinchannel is converted into thescattering phase shift through the interaction potential. Thepotential appears to be a combination of a short-range attractive core and a long-range attractive tail. The latter is found to be consistent with the two-pion exchange (TPE) obtained from the interaction between a color-dipole and the nucleon. The resultant scattering length and effective range forareand, respectively. The magnitude of the scattering length is shown to have nontrivial dependence ofand is sensitive to the existence of the long-range tail from TPE.