论文标题
$ \ bar {k} nnn $ system中的准结合状态
Quasi-bound state in the $\bar{K}NNN$ system
论文作者
论文摘要
该论文专用于$ \ bar {k} nnn $系统，该系统是由抗ki虫和三个核子组成的外来系统。求解了动态确切的四体FADDEEV型方程，并评估了系统中准结合状态的特性。使用了三个抗烟核和三个核子核子电位，因此研究了四体极点位置对两体相互作用模型的依赖性。由此产生的约束能量$ b^{\ rm手性} _ {k^-ppn} \ sim 30.5-34.5 $ meV以精心动机和$ b^{\ rm sidd} _ {\ rm sidd} _ {k^-ppn} \ sim 46.4-52.0 $ mev crege and gromes nucy and nucy ancon ancony ancony ancony ancony ancony ancony ancony ancon ancon ancon ancanik ancon ancanik ancon ancon anconagiak具有相同$ \ bar {k} n $和$ nn $电势的$ k^ - pp $系统，而四体宽度$γ_{k^ - ppn} \ sim 38.2-50.9 $ mev较小。
The paper is devoted to the $\bar{K}NNN$ system, which is an exotic system consisting of an antikaon and three nucleons. Dynamically exact four-body Faddeev-type equations were solved and characteristics of the quasi-bound state in the system were evaluated. Three antikaon-nucleon and three nucleon-nucleon potentials were used, so the dependence of the four-body pole positions on the two-body interaction models was studied. The resulting binding energies $B^{\rm Chiral}_{K^-ppn} \sim 30.5 - 34.5$ MeV obtained with chirally motivated and $B^{\rm SIDD}_{K^-ppn} \sim 46.4 - 52.0$ MeV obtained with phenomenological antikaon-nucleon potentials are close to those obtained for the $K^- pp$ system with the same $\bar{K}N$ and $NN$ potentials, while the four-body widths $Γ_{K^- ppn} \sim 38.2 - 50.9$ MeV are smaller.
