标题： 夸克介子耦合模型中的介子-原子核束缚态 显示英文标题

标题： Meson-nucleus bound states in quark meson coupling model

摘要： 用夸克介子耦合模型研究了 $K(\bar{K})$、$D(\bar{D})$ 和 $B(\bar{B})$ 介子-原子核束缚态在 ${\rm{^{16}O}}$、${\rm{^{40}Ca}}$、${\rm{^{90}Zr}}$、${\rm{^{197}Au}}$ 和 ${\rm{^{208}Pb}}$ 原子核中的形成。 该模型依赖于一种平均场描述，其中非重叠的核子袋通过标量（$\sigma$, $\delta$）和矢量（$\omega$, $\rho$）介子与袋内（反）夸克之间的自洽相互作用束缚在一起，并进一步扩展以研究核性质。 我们通过求解 Klein-Gordon 方程来估算介子-原子核束缚态的能量，使用模型内自洽计算出的真实势，并采用坐标空间方法。 针对不同的核相互作用进行了计算。 在本研究中考虑了库仑相互作用对带电介子的影响。 我们的研究表明，与$D$和$K$介子相比，在核的中心区域形成了更深束缚的$B$-介子态，这为探索微妙的核介质效应提供了一个更有力的探针。 这类束缚态的研究对于即将到来的FAIR的$\rm{\bar{P}ANDA}$、J-PARC-E29和JLab实验尤其感兴趣。 显示英文摘要

摘要： The formations of the $K(\bar{K})$, $D(\bar{D})$, and $B(\bar{B})$ meson-nucleus bound states in ${\rm{^{16}O}}$, ${\rm{^{40}Ca}}$, ${\rm{^{90}Zr}}$, ${\rm{^{197}Au}}$, and ${\rm{^{208}Pb}}$ nucleus are investigated using the quark meson coupling model. The model relies on a mean field description of non-overlapping nucleon bags bound by the self-consistent interactions of scalar ($\sigma$, $\delta$) and vector ($\omega$, $\rho$) mesons with the (anti)quarks inside the bags, which is further extended to explore the properties of nuclei. We estimate the meson-nucleus bound state energies by solving the Klein-Gordon equations with the real potentials calculated self-consistently within the model, using a coordinate space approach. The calculations are carried out for different nuclear interactions. The effects of Coulomb interaction are considered in the present study for the charged mesons. Our study indicates the formation of rather deeply bound $B$-mesic states at the very central region of the nuclei, compared to the $D$ and $K$ mesons, offering a more promising probe to explore subtle nuclear medium effects. The investigations of such bound states are of particular interest for the upcoming $\rm{\bar{P}ANDA}$ at FAIR, J-PARC-E29, and JLab experiments.