标题： 夸克介子耦合模型中的介子-核束缚态 显示英文标题

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

摘要： 研究使用夸克介子耦合模型探讨了介子-原子核束缚态$K(\bar{K})$、$D(\bar{D})$和$B(\bar{B})$在$^{16}O$、$^{40}Ca$、$^{90}Zr$、$^{197}Au$和$^{208}Pb$原子核中的形成。 该模型依赖于非重叠核子袋的平均场描述，这些核子袋由标量（$\sigma$, $\delta$）和矢量介子（$\omega$, $\rho$）通过自洽相互作用束缚住袋内的（反）夸克，这一描述进一步被扩展以探索原子核的性质。 我们通过求解在模型内自洽计算得到的实势的克莱因-戈登方程来估算介子-原子核束缚态的能量，使用的是坐标空间方法。 计算针对不同的核子相互作用进行。 本研究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，在原子核的中心区域形成了更深束缚的$B$-介子态，这提供了一个更有力的探针来探索微妙的核介质效应。 这类束缚态的研究所对于即将在FAIR、J-PARC-E29和JLab实验中的$\rm{\bar{P}ANDA}$尤为重要。 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 $^{16}O$, $^{40}Ca$, $^{90}Zr$, $^{197}Au$, and $^{208}Pb$ 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.